CN107297528B

CN107297528B - Drill bit or screw tap and multi-station drilling or tapping device thereof

Info

Publication number: CN107297528B
Application number: CN201710415229.5A
Authority: CN
Inventors: 杨东佐
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-06-05
Filing date: 2017-06-05
Publication date: 2020-12-08
Anticipated expiration: 2037-06-05
Also published as: CN107297528A

Abstract

A new drill bit and screw tap and its multistation drilling or tapping device, drill bit and screw tap include the threaded hole forming working edge located at the tip, position the pole portion, resist the department, slide the pole portion, top end contact portion forms; the drilling and tapping device is arranged on a multi-station drilling or tapping device, and drilling and tapping work can be finished without clamping by a drill chuck; the drilling and tapping work of multi-hole site synchronous threaded holes with micro-hole intervals is realized; accurate drilling and tapping positioning processing is realized, and the precision of the distance between each hole position or each thread hole position is ensured; meanwhile, the drill bit and the screw tap are simple in machining structure and convenient to manufacture.

Description

Drill bit or screw tap and multi-station drilling or tapping device thereof

Technical Field

The utility model relates to a screw hole machining tool of drill bit and screw tap to and drilling and thread machining device, the device that the multistation screw hole of in particular to small or accurate hole interval's drilling and thread forming.

Background

One method of machining multiple threaded holes is to drill and tap each hole separately. In order to ensure the position processing precision of the holes, especially the precise distance between each hole position or thread hole position, the numerical control processing mode of a numerical control drilling machine tool is often adopted to sequentially complete the drilling and tapping procedures of each hole. In another method, to improve the processing efficiency of the multi-station hole and the internal thread of the hole, the multi-station hole is processed simultaneously by using a gang drill, i.e. a multi-hole drill. For example, chinese patent publication No. CN202667721U discloses a multi-head gang drill, which can complete the machining of 2-80 holes at a time by using 2-80 drill rods to clamp a plurality of drill bits. Also, as disclosed in chinese patent publication No. CN104827072A, a multi-hole drill is disclosed, in which ten drill bit mounting seats are provided at an output end of a gear box of the multi-hole drill; the multi-hole synchronous tool is arranged right below the gear box, and the gear box is connected with the multi-hole synchronous tool through a guide column; the multi-hole synchronous tool is provided with ten drilling stations, the ten drilling stations correspond to the ten drill bit mounting seats one to one, and synchronous drilling and synchronous tapping are achieved through the gear box matched with the multi-hole synchronous tool. In the prior art, both a drill bit and a screw tap need a drill chuck to fix the drill bit or the screw tap, and the drill chuck is used for driving the drill bit or the screw tap to rotate so as to cut or extrude a machined part. The existing processing mode of a multi-hole drill or a plurality of screw taps is adopted, and each drill bit or screw tap corresponds to a drill chuck, so the hole distance of two adjacent holes which can be processed is not less than the sum of the radii of the two drill chucks; for some micro hole spacing or the hole spacing of two adjacent holes is smaller than the sum of the radiuses of two drill chucks, the existing processing mode of simultaneous drilling or tapping by gang drilling or multi-hole drilling cannot be adopted. In order to machine such holes, drilling can be performed in several times or a plurality of threaded holes with small intervals can be tapped in several times. In addition, no matter the mode of numerical control drilling and tapping is adopted, or the multi-hole drill is adopted to complete the drilling and tapping procedures of a plurality of hole sites, the position precision of the holes is completed by the positioning of a machine tool drill chuck instead of the actual processing position of a drill bit, the error value still exists when the distance of the processed hole sites is determined by the mode of the drill chuck, and the precision of the distance between each hole site or each threaded hole site cannot be ensured.

Disclosure of Invention

The invention aims to provide a novel drill bit and a novel screw tap, which can finish the drilling and tapping work without depending on the clamping of a drill chuck; the drilling and tapping work of multi-hole site synchronous threaded holes with micro-hole intervals is realized; accurate drilling and tapping positioning processing is realized, and the precision of the distance between each hole position or each thread hole position is ensured; meanwhile, the drill bit and the screw tap are simple in machining structure and convenient to manufacture. Another object of the utility model is to provide a new multistation drilling or attack tooth device, can realize on the one hand that the hole interval still accomplishes porous disposable drilling when being less than the drill chuck and takes shape or attack the tooth and take shape simultaneously, realize that arbitrary hole interval can both take shape or attack the tooth and take shape once only. On the other hand, the positions of the thread holes which are simultaneously processed and formed can be accurately positioned during drilling and tapping, and the position precision of the holes is high.

The drill bit or the screw tap comprises a threaded hole forming working edge part positioned at the tip, a positioning rod part, a resisting part, a sliding rod part and a top end contact part; the positioning rod part is positioned at the upper end of the forming working blade part, the resisting part is positioned at the upper end of the positioning rod part, the sliding rod part is positioned at the upper end of the resisting part, and the top contact part is positioned at the upper end of the sliding rod part. The sliding rod part is a prism with a triangle, a square or more than four corners; the diameter of the resisting part is larger than that of the positioning rod part. The screw hole forming cutting edge portion refers to a cutting edge portion for forming a hole by cutting with a drill, and the screw hole forming cutting edge portion refers to a thread forming edge portion for forming a thread by cutting or extrusion with a tap. The positioning rod part is matched with a positioning hole on the drilling or tapping die, so that the drill bit or the screw tap is accurately positioned at a drilling or tapping working position. Because the drill bit or the screw tap are directly positioned, the positioning is more accurate than the positioning by utilizing a drill chuck in the prior art, and the position error caused by the vibration and the like when the drill bit or the screw tap is installed eccentrically or is not coaxial or rotates is eliminated. The drill bit or the screw tap does not need to be clamped by a drill chuck to transmit power, but the transmission gear part is connected with a tooth-shaped part in a power mechanism, such as a gear, a synchronous belt and the like, so that the rotary power of the drill bit or the screw tap is transmitted, the drill bit or the screw tap rotates, and the drilling or tapping work is carried out. Therefore, the arrangement of the drill bit or the screw tap during drilling or tapping can be free from the limitation of the drill chuck and the influence of the radius of the drill chuck, so that the direct simultaneous drilling or tapping of a plurality of hole sites with any hole spacing can be realized. The drill bit or the screw tap is in contact with an ejector serving as a downward force application component in a drilling or tapping device by utilizing a contact part at the top end, so that the drill bit or the screw tap can move downwards to perform cutting machining of drilling or tapping on the one hand, the drill bit or the screw tap is positioned in the vertical direction, and on the other hand, the downward force of the ejector when the pressing plate is pressed downwards is received.

The multi-station drilling or tapping device comprises a rotary power rotating shaft, a synchronous belt transmission mechanism, an upper template, a return spring, a lower template plate, a pressing plate and a pressing die positioning column, wherein the return spring is used for supporting a drill bit or a screw tap on the upper template; the upper template is provided with an upper template positioning hole matched with a positioning rod part of a drill bit or a screw tap; the synchronous belt transmission mechanism comprises a synchronous belt driving wheel, a synchronous belt and a synchronous belt wheel which are arranged on the power rotating shaft; the synchronous belt driving wheel is arranged on the pressing plate or the upper template; the section of the center column hole of the synchronous pulley is a polygonal hole with a triangle or quadrangle or more; a positioning column spring is sleeved outside the pressing-die positioning column and passes through the positioning hole of the upper template to be hung on the pressing plate; the positioning column spring is arranged between the pressing plate and the upper template; the pressing plate and the top contact part of the drill bit are pivoted or the pressing plate is provided with any mode that the top piece is abutted against the top contact part of the drill bit or the screw tap. Will the utility model discloses a drilling or attack tooth device on drill bit or screw tap are installed, can carry out the multistation drilling or attack tooth work.

The multi-station drilling or tapping device adopts the following working mode:

firstly, the drill bit or the screw tap is installed on the multi-station drilling or tapping device, namely, the drill bit or the screw tap is sleeved in a return spring which is installed between an upper template and a supporting part of the drill bit or the screw tap, a positioning rod part extends into a positioning hole, a synchronous belt wheel is installed on a sliding rod part of the drill bit or the screw tap, and a contact part at the top end of the drill bit or the screw tap is pivoted on a pressing plate or is supported by a top piece installed on the pressing plate; and after the installation is finished, the workpiece can be machined.

During working, a workpiece to be processed is placed on the lower template plate; the pressing plate moves downwards, and the pressing die positioning column arranged on the pressing plate, the upper template and all parts arranged on the upper template move downwards together; the upper template and the lower template are contacted and matched, and the upper template simultaneously presses the workpiece to the lower template for fixing; the position of a positioning hole on the upper template, which corresponds to the drill bit or the screw tap, is right corresponding to the position of a hole on the workpiece; the power rotating shaft rotates to drive the synchronous belt to rotate, and the synchronous belt drives the synchronous belt pulley to rotate; the synchronous belt wheel drives the drill bit or the screw tap to rotate after rotating, and the forming edge part of the drill bit or the screw tap has the cutting or extruding function; the pressing plate continues to move downwards, the positioning column spring is compressed, and the pressing die positioning column moves upwards relative to the drilling pressing plate; the pressing plate or the top piece on the pressing plate presses the drill bit or the screw tap downwards, so that the drill bit or the screw tap moves downwards;

the synchronous pulley and the drill bit or the screw tap move in two modes, one mode is that the synchronous pulley slides on the drill bit or the screw tap along the sliding rod part, so that the drill bit or the screw tap keeps rotating on one hand and moves downwards relative to the synchronous pulley on the other hand; the other mode is that the sliding rod parts of the synchronous belt do not move relatively, but the synchronous pulley and the drill bit or the screw tap move downwards simultaneously, so that the drill bit or the screw tap is protected to rotate on one hand, and on the other hand, the drill bit, the screw tap and the synchronous pulley move downwards together under the action of a pressing plate.

The drill bit or the screw tap moves downwards, the positioning rod part moves downwards along the drilling positioning hole of the upper template, and the return spring is compressed; the drill bit or the screw tap continuously moves downwards along with the further pressing of the hole pressing plate, the drill bit penetrates through the positioning hole of the upper template, and the drilling or tapping work is carried out by cutting the workpiece to be processed or extruding the workpiece; after the pressing plate is pressed down to a preset position, the drill bit or the screw tap reaches a preset drilling depth to complete a preset drilling or tapping action; the pressure plate is lifted, and along with the lifting of the pressure plate, the return spring rebounds to drive the drill bit or the screw tap to lift and move upwards relative to the synchronous belt wheel; and the forming working edge part of the drill bit or the screw tap leaves the hole machining station of the workpiece to be machined and returns to the positioning hole of the upper template. The tapping device is different from a drilling device in that before the tap ascends, the power shaft stops and then rotates reversely, and the tap is guided to rotate, ascend and exit the tapped threaded hole. As the pressing plate continuously rises, the positioning column springs rebound to drive the upper die plate to move downwards relative to the pressing plate to return; the power shaft stops rotating, and the drill bit or the screw tap stops rotating; and the pressure plate continuously rises to return to the initial position, and drilling or tapping work is finished.

Further, the contact part at the top end of the drill bit or the screw tap is a plane contact part, the top piece arranged on the pressing plate is a ball screw, the ball of the ball screw abuts against the plane contact part at the top end of the drill bit or the screw tap, when the pressing plate presses down, the ball of the ball screw abuts against the plane contact part at the top end of the drill bit or the screw tap, the ball and the plane are in point contact, on one hand, the effect of downward force application can be achieved, and on the other hand, the drill bit or the screw tap has good rotating performance. In addition, the ball screw can be finely adjusted within a certain range in the threaded hole on the pressing plate, so that the vertical working position of the drill bit or the screw tap can be adjusted.

Furthermore, when the contact part at the top of the drill bit or the screw tap is a convex rotating shaft, the multi-station drilling or tapping device is provided with a rotating shaft hole on the pressing plate part and is pivoted with the rotating shaft. When the synchronous belt driving wheel synchronously drives the drill bit or the screw tap, the rotating shaft rotates in the rotating shaft hole, and the stability of the drill bit is kept. And a bearing bush can be arranged between the rotating shaft and the rotating hole to reduce friction.

Further, the contact part at drill bit or screw tap top be the contact concave surface for hold and settle the ball, force application part for the adjusting screw that leans on with the ball contact part of drill bit or screw tap top contact concave surface, the ball leans on with adjusting screw force application part's counterbalance, be the point contact between ball and the adjusting screw, can reach the effect of downward application of force on the one hand, on the other hand makes drill bit or screw tap have fine rotation. In addition, the adjusting screw can be finely adjusted within a certain range in the threaded hole on the pressing plate, so that the vertical working position of the drill bit or the screw tap can be adjusted.

Further, the contact part of the top end of the drill bit or the tap is a section of the top end of the drill bit or the tap. The force application component is a top piece and a ball, the section of the top piece is approximately H-shaped, a concave hole for containing the ball is formed in the top surface of the top piece, the ball is arranged in the concave hole, and a mounting hole for containing a contact part at the top end of a drill bit or a screw tap is formed in the lower portion of the top piece. The top piece is sleeved on a contact part of the top end of the drill bit or the tap, and the contact part of the top end of the drill bit or the tap is installed in an installation hole of the drill bit or the tap. The ball in the concave hole on the top surface of the top piece is abutted against a pressure plate of a multi-station drilling or tapping device. And a second spring for resetting the top piece is arranged below the top piece, the upper part of the second spring is contacted with the top piece, and the lower part of the second spring is contacted with the transmission tooth part. The mounting hole in the top piece can be a blind hole or a through hole communicated with the concave hole.

Furthermore, more than one synchronous belt tension wheel is arranged in the synchronous belt transmission mechanism.

Further, the positioning post of the pressing die enters the positioning post hole of the lower template plate,

the drill bit and the screw tap of the invention do not need to rely on the clamping of a drill chuck to transmit power to complete the drilling and tapping work; when drilling, the drill chuck can not be limited and is not influenced by the radius of the drill chuck, so that the direct simultaneous drilling of a plurality of hole sites with any hole spacing is realized. In addition, the drill positioning rod part is matched with the positioning hole in the drilling die, and the drill can be accurately positioned to the drilling position by means of matching of the positioning rod part and the positioning hole in the drilling die. Because the drill bit is directly positioned, the positioning is more accurate than the positioning by utilizing a drill chuck in the prior art, and the position error caused by the vibration and the like when the drill bit is installed eccentrically or is not coaxial or rotates is eliminated. Simultaneously, adopt the utility model discloses a simple structure of drill bit or screw tap, manufacturing process is simple and convenient, easily makes and reduce cost.

The utility model discloses a little hole interval drilling equipment and attack tooth device of drill bit and screw tap can structurally adopt synchronous belt drive's area to pass the utility model discloses a plurality of drill bits or a plurality of screw tap to it is steady to have transmission power on the one hand, and a plurality of drill bits and the good advantage of screw tap work synchronism, on the other hand need not use the drill chuck, can arbitrary a plurality of hole sites of hole interval, especially a plurality of hole sites of little hole interval drill and attack the tooth simultaneously, have the advantage that improves production efficiency by a wide margin. Meanwhile, the drill bit or the screw tap can be accurately positioned at the working position by adopting the working mode that the drill bit positioning rod part is matched with the drilling upper template positioning hole and the screw tap positioning rod is matched with the tapping upper template positioning hole. Because the drill bit or the screw tap is directly positioned, the positioning is more accurate than the positioning of the numerical control machine tool utilizing the drill chuck in the prior art, and the position error caused by the vibration and the like when the drill bit is installed eccentrically or is not coaxial or rotates is eliminated.

Drawings

Fig. 1 is a perspective view of a drill with a drill timing pulley according to embodiment 1.

Fig. 2 is a schematic view of the drill of example 1 mounted on a press plate and an upper die plate of a multi-station drilling apparatus.

FIG. 3 is a schematic sectional view of example 1.

Fig. 4 is an enlarged schematic view of a portion a in fig. 3.

Fig. 5 is a perspective view of a drill with a synchronous pulley for drilling according to example 2.

Fig. 6 is a schematic view of the drill of example 2 mounted on a press plate and an upper die plate of a multi-station drilling apparatus.

FIG. 7 is a schematic sectional view of example 2.

Fig. 8 is an enlarged schematic view of the portion M in fig. 7.

Fig. 9 is a perspective view of a drill with a synchronous pulley for drilling according to embodiment 3.

Fig. 10 is a schematic view of the drill of example 3 mounted on a press plate and an upper die plate of a multi-station drilling apparatus.

FIG. 11 is a schematic sectional view of example 3. .

Fig. 12 is an enlarged schematic view of the portion C in fig. 11.

FIG. 13 is a schematic sectional view of example 4.

Fig. 14 is a schematic perspective view of a tap of a toothed timing pulley according to example 5.

Fig. 15 is a schematic view of the tap according to example 5 mounted on a press plate and an upper die plate of a multi-station tapping apparatus.

FIG. 16 is a schematic sectional view of example 5.

Fig. 17 is an enlarged schematic view of a portion B in fig. 16.

Fig. 18 is a schematic perspective view of a tap of a toothed timing pulley according to embodiment 6.

Fig. 19 is a schematic view showing the tap according to example 6 mounted on a press plate and an upper die plate of a multi-station tapping apparatus.

FIG. 20 is a schematic sectional view of example 6.

Fig. 21 is an enlarged schematic view of the portion N in fig. 20.

Fig. 22 is a schematic perspective view of a tap of a toothed timing pulley according to example 7.

Fig. 23 is a schematic view showing the tap according to example 7 mounted on a press plate and an upper die plate of a multi-station tapping apparatus.

FIG. 24 is a schematic sectional view of example 7.

Fig. 25 is an enlarged schematic view of a portion D in fig. 24.

FIG. 26 is a schematic sectional view of example 8.

Fig. 27 is a perspective view of a drill according to example 9.

Fig. 28 is a schematic view of the drill of example 10 mounted on a press plate and an upper die plate of a multi-station drilling apparatus.

Fig. 29 is an enlarged schematic view of a portion E in fig. 28.

Fig. 30 is a schematic view showing the tap according to example 11 mounted on a press plate and an upper die plate of a multi-station tapping apparatus.

Fig. 31 is an enlarged schematic view of portion F in fig. 28.

Fig. 32 is a schematic cross-sectional view of the drill of example 12 mounted in a multi-station drilling apparatus.

Fig. 33 is an enlarged schematic view of the G portion of fig. 32.

Fig. 34 is a schematic sectional view of the tap according to example 13 mounted on a multi-station tapping apparatus.

Fig. 35 is an enlarged schematic view of the portion G of fig. 33.

The specific embodiment is as follows:

example 1

As shown in fig. 1, 2, 3 and 4, a drill 100 includes a cutting edge 101 at a tip end, a positioning shank 102, a stopper 103, a sliding shank 104, and a tip contact surface 105.

As shown in fig. 1, 2, 3 and 4, the drill 100 is stepped, and the diameter of the stop portion 103 is larger than that of the positioning rod portion 102. The sliding rod part is a regular square prism. A cutting part at the tip cutting edge part 101 for performing a drilling work; the drill positioning rod part 102 is matched with a positioning hole in the drilling mould when working, and the drill can be accurately positioned to the drilling position by the matching of the positioning rod part 102 and the positioning hole in the drilling mould. The drill 102 is inserted into a square prism hole at the center of a timing pulley in a power mechanism of a drilling device by a sliding rod 104, and the drill 100 is rotated by transmitting the rotational power of the drill by the timing pulley, so that the cutting edge 101 can perform cutting in the circumferential direction. The drill bit 100 is in contact with a top member of a drilling device by a contact portion plane 104 of a top end, and is positioned in a vertical direction on one hand and receives a downward force of the top member on the other hand, so that the drill bit can move downward to perform a cutting process of drilling.

A drilling device 400 comprises a drilling pressing plate 401, a drilling rotary power rotating shaft 402, a drilling synchronous belt transmission mechanism, a drill bit return spring 410, a drilling upper template 406 provided with a positioning hole 409, a drilling lower template plate 411 used for placing a workpiece to be machined, and a drilling pressing die positioning column 412; the drilling lower template plate 411 is arranged on the workbench; the drilling device is provided with a drill bit 100; the drill cutting edge part 101 is inserted into the upper drilling template positioning hole 409 and is positioned on the upper drilling template 406 through the matching of the positioning rod part 102 and the upper drilling template positioning hole 409; a bit return spring 410 is arranged between the resisting part 103 of the drill bit 100 and the drilling upper template 406; the drilling synchronous belt transmission mechanism comprises a drilling synchronous belt driving wheel 403 arranged on a drilling power rotating shaft 402, more than two drilling synchronous belt wheels 404, a drilling synchronous belt 413 and a drilling tension wheel 405; the drilling synchronous belt driving wheel 403 is installed on the drilling pressing plate 401, the drilling synchronous belt pulley 404 is installed on the sliding rod part 104 of the drill bit 100, the drilling tension pulley 405 is installed on the drilling pressing plate 401, and the drilling synchronous belt 413 bypasses the drilling synchronous belt driving wheel 403, the drilling synchronous belt pulley 404 and the drilling tension pulley 405 to form drilling synchronous belt transmission. The sliding rod 104 of the drill 100 is a square prism, a square prism hole is formed in the center of the synchronous pulley 404, and the square prism hole on the synchronous pulley 404 is matched with the square prism of the sliding rod. The sliding drilling synchronous belt driving wheel 403 rotates to drive the drilling synchronous belt wheel 404 to rotate, and then the drill bit 100 is driven to rotate. A drilling press mold positioning column 412 is sleeved with a drilling positioning column spring 415 outside and passes through a drilling positioning hole of the drilling upper template to be hung on the drilling pressing plate 401; a drill positioning post spring 415 is installed between the drill press plate 401 and the drill upper template 406; a drilling lower template plate positioning column hole 416 corresponding to the drilling die positioning column 412 is arranged on the drilling lower template plate 406; the drill press plate 401 is provided with a ball screw 417 in contact with the tip contact flat 105 of the drill 100.

The multi-station drilling device 400 and the drill 100 work in such a way that the drilling press plate 401 moves downwards, and the drilling press mold positioning column 412 arranged on the drilling press plate 401, the drilling upper template 406 and all the components arranged on the drilling upper template press plate 401 move downwards together; the drilling die positioning column 412 enters a positioning column hole 416 of the drilling lower template plate 411, the drilling upper template 406 is in contact with the drilling lower template plate 411 for mold closing, and the drilling upper template 406 simultaneously presses the workpiece to the drilling lower template plate 411 for fixing; the drilling positioning hole 409 corresponding to the drill bit on the drilling upper template 406 corresponds to the drilling position on the workpiece; the drilling power rotating shaft 402 rotates to drive the drilling synchronous belt driving wheel 403 to rotate, and drives the drilling synchronous belt 413 to rotate, so as to drive the drilling synchronous belt wheel 404, and the drill bit 100 is driven to rotate through the sliding rod part 104 on the drill bit 100; the drill cutting edge portion 101 has a cutting function. The drilling pressing plate 401 continues to move downwards, the drilling positioning column spring 415 is compressed, the drilling pressing die positioning column 412 moves upwards relative to the drilling pressing plate, and the upper end of the drilling positioning column 412 enters a space for movement of the drilling pressing plate positioning column 412 arranged between the drilling pressing plate 401 and the movable table 302; the drilling pressing plate 401 is provided with a ball screw 417 to press down the top contact plane 105 of the drill bit 100, so that the drill bit 100 moves downwards, and meanwhile, the drilling tensioning wheel 405 installed on the drilling pressing plate 401, the drilling synchronous belt 413 and the synchronous pulley 404 move downwards together, and the sliding rod part 104 of the drill bit 100 and the synchronous pulley 404 do not move, so that the drill bit 100 is kept to rotate continuously under the driving of the drilling synchronous belt transmission mechanism. The positioning rod part 102 of the drill 100 moves downwards along the drilling positioning hole 409 of the upper template, and the drill return spring 410 is compressed; with the further pressing of the drilling pressing plate 401, the drill bit 100 continuously moves downwards, the drill bit 100 penetrates through the drilling positioning hole 409 of the drilling upper template, the workpiece to be machined is cut to drill, after the drilling pressing plate 401 is pressed to a preset position, the drill bit 200 reaches a preset drilling depth, and a preset drilling action is completed; then, the drilling pressing plate 401 stops descending and turns to ascending, along with the ascending of the drilling pressing plate 401, the drill bit return spring 410 rebounds to drive the resisting part 103 of the drill bit 100 to ascend to drive the drill bit 100 to ascend, and the cutting part 101 of the drill bit leaves a hole machining position of a workpiece to be machined and returns to the drilling positioning hole 409 of the upper template for drilling; the drilling pressing plate 401 continuously rises, and the positioning column spring 415 rebounds to drive the drilling upper template 406 to move downwards relative to the drilling pressing plate 401 to return; the drilling power shaft 402 stops rotating and the drill bit 100 stops rotating; the drill press plate 401 continues to rise back to the initial position, completing the drilling operation.

Example 2

As shown in fig. 5, 6, 7 and 8, a drill 1001 includes a cutting edge portion 1011 at a tip end, a positioning rod portion 1021, a resisting portion 1031, a sliding rod portion 1041, and a tip contact portion concave surface 1051;

the drill 1001 is stepped, and the diameter of the resisting part 1031 is larger than that of the positioning rod part 1021. The slide lever 1041 is a regular quadrangular prism. A cutting portion located at the tip cutting edge portion 1011 as a drilling work; when the drill positioning rod part 1021 works, the drill positioning rod part 1021 is matched with the positioning hole 409 on the drilling mould, and the drill can be accurately positioned to the drilling position by means of the matching of the positioning rod part 1021 and the positioning hole 409 on the drilling mould. The sliding rod 1041 of the drill 1001 is sleeved into the center hole of the synchronous pulley on the drilling device to complete power transmission, so that the drill 1001 rotates, and the cutting edge 1011 can perform cutting in the circumferential direction. The drill 1001 is positioned in the vertical direction by the contact part concave surface 1051 at the top end and the ball 1061 arranged in the concave surface, and receives the downward force of the downward force application part, so that the drill can move downward to perform the cutting process of drilling.

A drilling device 400 comprises a drilling pressing plate 401, a drilling rotary power rotating shaft 402, a drilling synchronous belt transmission mechanism, a drill bit return spring 410, a drilling upper template 406 provided with a positioning hole 409, a drilling lower template plate 411 used for placing a workpiece to be machined, and a drilling pressing die positioning column 412; the drilling lower template plate 411 is arranged on the workbench 304; a drill 1001 is mounted on the drilling device; the drill cutting edge part 1011 is inserted into the positioning hole 409 of the upper drilling template and is positioned on the upper drilling template 406 through the matching of the positioning rod part 1021 and the positioning hole 409 of the upper drilling template; a drill bit return spring 410 is arranged between the resisting part 1031 of the drill bit 1001 and the drilling upper template 406, and the drill bit 1001 is sleeved in the positioning spring 410; the drilling synchronous belt transmission mechanism comprises a drilling synchronous belt driving wheel 403, a drilling synchronous belt 413, a drilling tension wheel 405 and more than two drilling synchronous belt wheels 404, wherein the drilling synchronous belt driving wheel 403 is arranged on a drilling power rotating shaft 402; the drilling synchronous belt driving wheel 403, the drilling tensioning wheel 405 and the drill bit 1001 are all installed on the drilling upper template 406, and the drilling synchronous belt 413 bypasses the drilling synchronous belt driving wheel 403, the synchronous belt wheel 404 and the drilling tensioning wheel 405 to form drilling synchronous belt transmission. The sliding rod 1041 of the drill 1001 is a square prism, the synchronous pulley 404 is provided with a square prism, and the square prism on the synchronous pulley 404 is matched with the square prism of the sliding rod. The drilling synchronous belt driving wheel 403 rotates to drive the drilling tension wheel 405, the synchronous belt wheel 404 on the drill bit 1001, and the drill bit 1001 is driven to rotate. A drilling press mold positioning column 412 is sleeved with a drilling positioning column spring 415 outside and passes through a drilling positioning hole of the drilling upper template to be hung on the drilling pressing plate 401; a drill positioning post spring 415 is installed between the drill press plate 401 and the drill upper template 406; a drilling lower template plate positioning column hole 416 corresponding to the drilling die positioning column 412 is arranged on the drilling lower template plate 406; the adjustment screw 427 provided on the drill presser plate 401 abuts against and contacts the ball 1061 mounted in the tip contact portion concave surface 1051 of the drill 1001.

The multi-station drilling device 400 and the drill 1001 work in such a way that the drilling press plate 401 moves downwards, and the drilling press mold positioning column 412 arranged on the drilling press plate 401, the drilling upper template 406 and all the components arranged on the drilling upper template 406 move downwards together; the drilling die positioning column 412 enters a positioning column hole 416 of the drilling lower template plate 411, the drilling upper template 406 is in contact with the drilling lower template plate 411 for mold closing, and the drilling upper template 406 simultaneously presses the workpiece to the drilling lower template plate 411 for fixing; the drilling positioning hole 409 corresponding to the drill bit on the drilling upper template 406 corresponds to the drilling position on the workpiece; the drilling power rotating shaft 402 rotates to drive the drilling synchronous belt driving wheel 403 to rotate, and drives the drilling synchronous belt 413 to rotate, so that the synchronous belt wheel 404 is driven, and the drill bit 1001 is driven to rotate; the drill blade 101 has a cutting function; the drilling press plate 401 continues to move downward, the drilling locator post spring 415 is compressed, and the drilling press mold locator post 412 moves upward relative to the drilling press plate; the drilling press plate 401 is provided with an adjusting screw 427 which presses down a ball 1061 in a concave 1051 of the top contact part of the drill 1001, and then the ball 1061 presses down the concave 1051 of the top contact part, so that the drill 1001 moves downwards; the drill 1001 moves downward, and the slidable rod portion 1041 moves downward by relative displacement with respect to the timing pulley 404. The drill 1001 moves downward while rotating. As the drill press plate 401 moves down, the positioning rod portion 1021 of the drill 1001 moves down along the drill upper template drill positioning hole 409, and the drill return spring 410 is compressed; with the further pressing of the drilling pressing plate 401, the drill 1001 continuously moves downwards, the drill 1001 penetrates through the drilling positioning hole 409 of the drilling upper template, the workpiece to be machined is cut to drill, and after the drilling pressing plate 401 is pressed to a preset position, the drill 200 reaches a preset drilling depth to complete a preset drilling action; then, the drilling pressing plate 401 stops descending and turns to ascending, along with the ascending of the drilling pressing plate 401, the drill bit return spring 410 rebounds to drive the drill bit 1001 to ascend, and the drill bit cutting part 1001 leaves a hole machining position of a workpiece to be machined and returns to the drilling positioning hole 409 of the upper template for drilling; the drilling pressing plate 401 continuously rises, and the positioning column spring 415 rebounds to drive the drilling upper template 406 to move downwards relative to the drilling pressing plate 401 to return; the drilling power shaft 402 stops rotating and the drill bit 1001 stops rotating; the drill press plate 401 continues to rise back to the initial position, completing the drilling operation.

Example 3

As shown in fig. 9, 10, 11 and 12, a drill 1002 comprises a cutting edge portion 1012 at a tip end, a positioning rod portion 1022, a resisting portion 1032, a sliding rod portion 1042, and a rotary shaft 1052 protruding from a top end; the diameter of the abutments 1032 is greater than the diameter of the positioning posts 1022.

Different from the embodiment 1, in the drilling apparatus 400, a pivoting hole 420 is formed in a drilling pressing plate 401, a protruding rotation shaft 1052 is provided at the top end of a drill 1002 installed in the drilling apparatus, and the rotation shaft 1052 and the rotation shaft pivoting hole 420 are pivoted so as to transmit downward pressure, so that the drill moves downward without obstructing the rotation of the drill; drill bit 1002 is mounted in cooperation with a drilling die using a locating shaft portion 1022.

A bit return spring 410 is arranged between the resisting part 1032 on the bit 1002 and the drilling upper template 406; the drilling synchronous belt transmission mechanism comprises a drilling synchronous belt driving wheel 403 arranged on a drilling power rotating shaft 402, more than two drilling synchronous belt wheels 404, a drilling synchronous belt 413 and a drilling tension wheel 405; the drilling synchronous belt driving wheel 403 is installed on the drilling upper template 406, the drilling synchronous belt pulley 404 is installed on the sliding rod part 104 of the drill bit 100, the drilling tension pulley 405 is installed on the drilling pressing plate 401, and the drilling synchronous belt 413 bypasses the drilling synchronous belt driving wheel 403, the drilling synchronous belt pulley 404 and the drilling tension pulley 405 to form drilling synchronous belt transmission; the length of the sliding shank 104 of the drill bit 100 is greater than the thickness of the timing pulley 404. As the drill timing belt drive wheel 403 drives the drill bit 1002 through the drill timing belt 413 and the drill timing pulley 404, the rotary shaft 1052 rotates within the rotary shaft bore 420, maintaining stability of the drill bit 1002. When the borehole platen 401 moves downward, the borehole platen 401 directly pushes down the drill 1002 to move downward.

Example 4

As shown in fig. 9 and 13, a drill 1002 includes a cutting edge portion 1012 at a tip end, a positioning rod portion 1022, a stopper portion 1032, a sliding rod portion 1042, and a rotary shaft 1052 protruding from a tip end; the diameter of the stop part 1022 is larger than the diameter of the positioning rod part 1022. Unlike embodiment 3, the tension wheel 405 is mounted on the drill upper die plate 406.

When the drilling pressing plate 401 moves downwards, the drilling pressing plate 401 directly presses the drill 1002 to move downwards, the sliding rod portion 1042 of the drill 1002 and the synchronous pulley 404 are displaced relatively, the drill 1002 moves downwards relative to the synchronous pulley 404, and because the length of the sliding rod portion 1042 is greater than the thickness of the synchronous pulley 404, when the drill 1002 moves downwards, the synchronous pulley 404 is still sleeved on the sliding rod portion 1042 and still drives the drill 1002 to rotate. A movement pattern is realized in which the drill 1002 rotates on the one hand and moves downward on the other hand. A bearing bush (not shown) is provided between the rotary shaft 1052 and the rotary shaft hole (not shown) to reduce friction.

Example 5

As shown in fig. 14, 15, 16 and 17, a tap 200 includes a thread forming edge portion 201 at a tip end, a positioning shank portion 202, a stopper portion 203, a sliding shank portion 204, and a tip contact portion plane 205.

The tap 200 is stepped, and the diameter of the resisting part 203 is larger than that of the positioning rod part 202. The thread forming blade part 201 at the tip is used as a thread forming part for tapping work and is used for finishing the thread forming work; the tap positioning rod part 202 is matched with a positioning hole in a tapping die during working, and the tap can be accurately positioned to a tapping position by matching the positioning rod part 202 with the positioning hole in the tapping die. The tap 202 is inserted into and connected to a center hole of a timing pulley in a power mechanism of a tapping device by a slide rod portion 204, and the rotational power of the tap is transmitted by the timing pulley to rotate the tap 200, so that the thread forming edge portion 201 can be thread-formed in the circumferential direction. The tap 200 is positioned in a vertical direction on the one hand and receives a downward force of the top member on the other hand by the contact portion plane 204 of the top end being in contact with the top member in the tapping means, so that the tap can move downward for tapping thread forming.

A tapping device 500 comprises a tapping pressing plate 501, a tapping rotary power rotating shaft 502, a tapping synchronous belt transmission mechanism, a screw tap return spring 510, a tapping upper template 506 provided with a positioning hole 509, a tapping lower template plate 511 used for placing a workpiece to be machined, and a tapping press mold positioning column 512; the tapping lower template plate 511 is arranged on the workbench; the tapping device is provided with a screw tap 200; the thread forming blade part 201 of the tap is inserted into the positioning hole 509 of the tapping upper die plate, and is positioned on the tapping upper die plate 506 through the matching of the positioning rod part 202 and the positioning hole 509 of the tapping upper die plate; a screw tap return spring 510 is arranged between the resisting part 203 of the screw tap 200 and the tapping upper die plate 506; the tapping synchronous belt transmission mechanism comprises a tapping synchronous belt driving wheel 503 arranged on a tapping power rotating shaft 502, more than two tapping synchronous belt wheels 504, a tapping synchronous belt 513 and a tapping tension wheel 505; the tapping synchronous belt driving wheel 503 is installed on the tapping pressing plate 501, the tapping synchronous belt wheel 504 is installed on the sliding rod part 204 of the screw tap 200, the tapping tension wheel 505 is installed on the tapping pressing plate 501, and the tapping synchronous belt 513 bypasses the tapping synchronous belt driving wheel 503, the tapping synchronous belt wheel 504 and the tapping tension wheel 505 to form tapping synchronous belt transmission; the length of the sliding rod portion 204 of the tap 200 is greater than the thickness of the timing pulley 504. The sliding rod portion 204 of the screw tap 200 is a square prism, the synchronous pulley 504 is provided with a square prism hole, and the square prism hole on the synchronous pulley 504 is matched with the square prism of the sliding rod portion. The sliding tapping synchronous belt driving wheel 503 rotates to drive the tapping synchronous belt wheel 504 to rotate, and then drives the screw tap 200 to rotate; because the length of the sliding rod portion 204 on the tap 200 is greater than the thickness with the timing pulley 504; as the tap press plate continues to be depressed, moving the tap 200 downward, the sliding stem portion 204 of the tap is vertically displaceable relative to the timing pulley 504, yet the tap remains rotated. A tapping positioning column spring 515 is sleeved outside the tapping pressing die positioning column 512, penetrates through a tapping positioning hole of the tapping upper template and is hung on the tapping pressing plate 501; the tapping positioning column spring 515 is arranged between the tapping pressing plate 501 and the tapping upper template 506; a tapping lower template plate positioning column hole 516 corresponding to the tapping die positioning column 512 is arranged on the tapping lower template plate 506; the tapping pressure plate 501 is provided with a ball screw 517 which is in contact with the tip contact plane 205 of the tap 200.

The multi-station tapping device 500 and the tap 200 work in such a way that the tapping press plate 501 moves downwards, and the tapping press die positioning column 512, the tapping upper die plate 506 and all the parts mounted on the tapping press plate 501 move downwards together; the positioning column 512 of the tapping die enters the positioning column hole 516 of the tapping lower template plate 511, the tapping upper template 506 is in contact with the tapping lower template plate 511 for die assembly, and the tapping upper template 506 simultaneously presses the workpiece to the tapping lower template plate 511 for fixation; the tapping positioning holes 509, corresponding to the taps, on the tapping upper die plate 506 correspond to tapping positions on the workpiece; the tapping power rotating shaft 502 rotates to drive the tapping synchronous belt driving wheel 503 to rotate, and drives the tapping synchronous belt 513 to rotate, so that the tapping synchronous belt wheel 504 is driven, and the screw tap 200 is driven to rotate through the sliding rod part 204 on the screw tap 200; the tap edge 201 has a thread forming function; the tapping press plate 501 continues to move downwards, the tapping positioning column spring 515 is compressed, the tapping press mold positioning column 512 moves upwards relative to the tapping press plate, and the upper end of the tapping positioning column 512 enters a space for the tapping press plate positioning column 512 arranged between the tapping press plate 501 and the movable table 302 to move; the tapping pressing plate 501 is provided with a ball screw 517 to press down the top end contact plane 205 of the screw tap 200, so that the screw tap 200 moves downwards, the tapping tension wheel 505 arranged on the tapping pressing plate 501, the tapping synchronous belt 513 and the synchronous belt wheel 504 move downwards together, and the sliding rod part 504 of the screw tap 500 and the synchronous belt wheel 504 do not displace, so that the screw tap 500 is driven by the tapping synchronous belt transmission mechanism to rotate continuously. The positioning rod part 202 of the screw tap 200 moves downwards along the tapping positioning hole 509 of the tapping upper template, and the screw tap return spring 510 is compressed; with the further pressing of the tapping pressing plate 501, the screw tap 200 continuously moves downwards, the screw tap 200 penetrates through a tapping positioning hole 509 of the tapping upper template, the thread forming is started to tap a workpiece to be machined, and after the tapping pressing plate 501 is pressed to a preset position, the screw tap 200 reaches a preset tapping depth to complete a preset tapping action;

the tapping pressing plate 501 stops descending, then the tapping pressing plate 501 ascends, meanwhile, the tapping power shaft 502 rotates reversely to drive the tapping synchronous belt 513 to rotate reversely, and after the tapping synchronous belt 513 rotates reversely, the tapping synchronous belt wheel 504 rotates reversely to drive the screw tap 2006 to rotate reversely; the screw tap 2006 reversely rotates and reversely withdraws from the threaded hole; as the tapping press plate 501 rises, the screw tap return spring 510 rebounds to drive the resisting part 203 of the screw tap 200 to rise to drive the screw tap 200 to reversely withdraw from the thread to rotate and rise, and the screw tap thread forming part 201 leaves a hole machining station of a workpiece to be machined and returns to the tapping positioning hole 509 of the tapping upper die plate; the tapping press plate 501 continuously rises, and the positioning column spring 515 rebounds to drive the tapping upper die plate 506 to move downwards relative to the tapping press plate 501 and return; the tapping power shaft 502 stops rotating, and the tap 200 stops rotating; the tapping press plate 501 continues to rise back to the initial position, and tapping work is completed.

Example 6

As shown in fig. 18, 19, 20 and 21, a tap 2001 includes a thread-forming blade 2011 at the tip, a positioning rod 2021, a stopper 2031, a sliding rod 2041, and a tip contact plane 2051;

the tap 2001 is step-shaped, and the diameter of the resisting part 2031 is larger than that of the positioning rod part 2021. The thread forming blade 2011 at the tip is used as a thread forming part for tapping work to finish the thread forming work; the tap positioning rod part 2021 is matched with the positioning hole 509 on the tapping die during operation, so that the tap 2001 is accurately positioned to the tapping position. The sliding rod 2041 of the screw tap 2001 is a regular square prism, and power transmission is realized by sleeving a central regular square prism hole of the synchronous pulley 504 on the tapping device, so that the screw tap 2001 rotates, and the thread forming edge 2011 can perform thread forming in the circumferential direction. The tap 2001 is positioned in the vertical direction by the contact portion concave surface 2051 at the tip and the ball 2061 provided in the concave surface, which are in contact with the adjusting screw 527 in the tapping device, and receives the downward force of the downward force application member, so that the tap 2001 can move downward for tapping thread forming.

A tapping device 500 comprises a tapping pressing plate 501, a tapping rotary power rotating shaft 502, a tapping synchronous belt transmission mechanism, a screw tap return spring 510, a tapping upper template 506 provided with a positioning hole 509, a tapping lower template 511 used for placing a workpiece to be machined, and a tapping press mold positioning column 512; the tapping lower template 511 is arranged on the workbench 304; the tapping device is provided with a screw tap 2001; the screw tap thread forming edge part 2011 is inserted into the tapping upper template positioning hole 509 and is positioned on the tapping upper template 506 through the matching of the positioning rod part 2021 and the tapping upper template positioning hole 509; a screw tap return spring 510 is arranged between the abutting part 2031 of the screw tap 2001 and the tapping upper die plate 506, and the screw tap 2001 is sleeved in the screw tap return spring 510; the tapping synchronous belt transmission mechanism comprises a tapping synchronous belt driving wheel 503 arranged on a tapping power rotating shaft 502, a tapping synchronous belt 513, a tapping tension wheel 505 and more than two tapping synchronous belt wheels 504; the tapping synchronous belt driving wheel 503, the tapping tension wheel 505 and the screw tap 2001 are all installed on the tapping upper die plate 506, and the tapping synchronous belt 513 bypasses the tapping synchronous belt driving wheel 503, the synchronous belt wheel 504 and the tapping tension wheel 505 to form tapping synchronous belt transmission. The tapping synchronous belt driving wheel 503 rotates to drive the tapping tension wheel 505, the synchronous belt wheel 504 on the screw tap 2001 is driven, and the screw tap 2001 is driven to rotate. A tapping positioning column spring 515 is sleeved outside the tapping pressing die positioning column 512, penetrates through a tapping positioning hole of the tapping upper template and is hung on the tapping pressing plate 501; the tapping positioning column spring 515 is arranged between the tapping pressing plate 501 and the tapping upper template 506; a tapping lower template plate positioning column hole 516 corresponding to the tapping die positioning column 512 is arranged on the tapping lower template plate 506; the adjusting screw 427 provided on the tapping pressure plate 501 abuts against and contacts the ball 2061 mounted in the recessed plane 2051 of the tip contact portion of the tap 2001.

The multi-station tapping device 500 and the screw tap 2001 work in such a way that the tapping press plate 501 moves downwards, and the tapping press die positioning column 512, the tapping upper die plate 506 and parts arranged on the tapping upper die plate 506 which are arranged on the tapping press plate 501 move downwards together; the positioning column 512 of the tapping die enters the positioning column hole 516 of the tapping lower template plate 511, the tapping upper template 506 is in contact with the tapping lower template plate 511 for die assembly, and the tapping upper template 506 simultaneously presses the workpiece to the tapping lower template plate 511 for fixation; the tapping positioning holes 509, corresponding to the taps, on the tapping upper die plate 506 correspond to tapping positions on the workpiece; the tapping power rotating shaft 502 rotates to drive the tapping synchronous belt driving wheel 503 to rotate, and drives the tapping synchronous belt 513 to rotate, so that the synchronous belt wheel 504 is driven, and the screw tap 2001 is driven to rotate; the tap edge 201 has a thread forming function; the tapping press plate 501 continues to move downwards, the tapping positioning column spring 515 is compressed, and the tapping press mold positioning column 512 moves upwards relative to the tapping press plate; as the tapping press plate is pressed downwards, the tapping press plate 401 is provided with an adjusting screw 527 which presses down a ball 1061 arranged in a concave plane 2051 of a top contact part of the screw tap 2001, and then the ball 2061 presses down the concave plane 2051 of the top contact part, so that the screw tap 2001 moves downwards; the tap 2001 moves downward, and the slide rod portion 2041 moves downward by relative displacement with respect to the timing pulley 504. The tap 2001 moves downward while rotating. As the tapping press plate 501 moves downward, the positioning rod portion 2021 of the tap 2001 moves downward along the tapping positioning hole 509 of the tapping upper die plate, and the tap return spring 510 is compressed; with the further pressing of the tapping press plate 501, the screw tap 2001 continuously moves downwards, the screw tap 2001 penetrates through the tapping positioning hole 509 of the tapping upper template, the thread forming is started to tap a workpiece to be machined, and after the tapping press plate 501 is pressed to a preset position, the screw tap 200 reaches a preset tapping depth to complete a preset tapping action; the tapping pressing plate 501 stops descending, then the tapping pressing plate 501 ascends, meanwhile, the tapping power shaft 502 rotates reversely to drive the tapping synchronous belt 513 to rotate reversely, and after the tapping synchronous belt 513 rotates reversely, the tapping synchronous belt wheel 504 rotates reversely to drive the screw tap 2006 to rotate reversely; the screw tap 2006 reversely rotates and reversely withdraws from the threaded hole; as the tapping press plate 501 rises, the screw tap return spring 510 rebounds to drive the resisting part 203 of the screw tap 200 to rise to drive the screw tap 200 to reversely withdraw from the thread to rotate and rise, and the screw tap thread forming part 2001 leaves a hole machining station of a workpiece to be machined and returns to the tapping positioning hole 509 of the tapping upper die plate; the tapping press plate 501 continuously rises, and the positioning column spring 515 rebounds to drive the tapping upper die plate 506 to move downwards relative to the tapping press plate 501 and return; the tapping power shaft 502 stops rotating, and the tap 2001 stops rotating; the tapping press plate 501 continues to rise back to the initial position, and tapping work is completed.

Example 7

As shown in fig. 22, 23, 24 and 25, a tap 2002 is composed of a thread forming blade 2012 at the tip, a positioning rod portion 2022, a resisting portion 2032, a sliding rod portion 2042, a rotating shaft 2052 with a projecting tip; the diameter of the abutting portion 2032 is larger than the diameter of the positioning rod portion 2022.

Different from the embodiment 5, in the tapping device 500, the tapping pressure plate 501 is provided with a rotating shaft hole 520, the top end of the tap 2002 mounted in the tapping device is provided with a protruding rotating shaft 2052, and the rotating shaft 2052 is pivoted with the rotating shaft hole 520 so as to transmit downward pressure, so that the tap moves downward and the rotation of the tap is not hindered; the tap 2002 is mounted in cooperation with the tapping die using the pilot stem 2022.

A tap return spring 510 is provided between the abutment portion 2032 on the tap 2003 and the tapping upper die plate 506; the tapping synchronous belt transmission mechanism comprises a tapping synchronous belt driving wheel 503 arranged on a tapping power rotating shaft 502, more than two tapping synchronous belt wheels 504, a tapping synchronous belt 513 and a tapping tension wheel 505; the tapping synchronous belt driving wheel 503 is installed on the tapping pressing plate 501, the tapping synchronous belt wheel 504 is installed on the sliding rod part 204 of the screw tap 200, the tapping tension wheel 505 is installed on the tapping pressing plate 501, and the tapping synchronous belt 513 bypasses the tapping synchronous belt driving wheel 503, the tapping synchronous belt wheel 504 and the tapping tension wheel 505 to form tapping synchronous belt transmission; the length of the sliding rod portion 204 of the tap 200 is greater than the thickness of the timing pulley 504. When the tap 2002 is driven by the tapping timing belt drive pulley 503 via the tapping timing belt 513 and the tapping timing pulley 504, the rotary shaft 2042 rotates in the rotary shaft hole 420, maintaining the stability of the tap 2002. When the tapping press plate 501 moves downward, the tapping press plate 501 directly presses the tap 2002 downward.

Example 8

As shown in fig. 22 and 26, a tap 2002 is composed of a thread forming blade 2012 at the tip, a positioning rod portion 2022, a resisting portion 2032, a sliding rod portion 2042, and a rotating shaft 2052 with a projecting tip; the diameter of the abutting portion 2032 is larger than the diameter of the positioning rod portion 2022. Unlike embodiment 7, the tension wheel 505 is mounted on the tapping top die plate 506.

When the tapping press plate 501 moves downwards, the tapping press plate 501 directly presses the screw tap 2002 downwards, the sliding rod part 2042 of the screw tap 2002 is displaced relative to the synchronous pulley 504, the screw tap 2002 moves downwards relative to the synchronous pulley 504, and because the length of the sliding rod part 2042 is greater than the thickness of the synchronous pulley 504, the synchronous pulley 504 still sleeves the sliding rod part 2042 when the screw tap 2002 moves downwards, and the screw tap 2002 is still driven to rotate. A movement pattern is achieved in which the tap 2002 is turned on the one hand and moved down on the other hand. Bearing pads (not shown) are provided between the rotary shaft 2003 and the rotary shaft holes (not shown) to reduce friction.

Example 9

As shown in fig. 27, a drill 1003 includes a cutting edge part 1013 at a tip, a positioning rod 1023, a stopper 1033, a sliding rod 1043, and a tip contact part 1053, wherein the sliding rod 1043 is a hexagonal prism.

The structural form that the ball screw in the drilling or tapping device in embodiment 1 or 5 and the drill bit or the tap top contact plane abut against each other can be exchanged and combined with the structural form that the adjusting screw in the drilling or tap device in embodiment 2 or 6 and the drill bit or the tap top contact concave surface accommodate the mutual abutment of the ball, and still can be taken as an embodiment to realize the purpose of the utility model, the function that the drilling device pushes the drill bit to move downwards is realized by pushing the drill bit to move downwards while keeping the drill bit to rotate. Also belong to the embodiments of the present invention, and are included in the content of the present invention.

The sliding rod part of the drill bit or the screw tap can also be a regular triangle prism, and the synchronous belt wheel can drive the drill bit or the screw tap to rotate by matching with the driving belt wheel with the regular triangle prism. Similarly, the same effect of transmission can be achieved by matching the regular pentagonal or other prism bodies with the regular pentagonal or other prism holes, and the transmission device are all the content of the utility model.

Example 10

As shown in fig. 5, 28, and 29, the drill 1001 of example 2 is used as the drill of this example. The drill 1001 includes a cutting edge portion 1011 at the tip, a positioning rod portion 1021, a resisting portion 1031, a sliding rod portion 1041, and a top end contact portion concave surface 1051; .

As shown in fig. 28 and 29, this embodiment is different from embodiment 2 in that the drill 1001 directly abuts against the drill platen 401 in the drilling device by the contact portion concave surface 1051 at the tip end and the ball 1061 in the setting concave surface.

When the multi-station drilling device works, the drilling press plate 401 directly presses down the ball 1061 in the concave 1051 of the top contact part of the drill 1001, and then the ball 1061 presses down the concave 1051 of the top contact part, so that the drill 1001 moves downward.

Example 11

As shown in fig. 18, 30 and 31, the drill of the present embodiment employs the tap 2001 of embodiment 2. The tap 2001 includes a cutting edge portion 2011 at the tip, a positioning rod portion 2021, a resisting portion 2031, a sliding rod portion 2041, and a tip contact portion concave surface 2051; .

As shown in fig. 28 and 29, the present embodiment is different from embodiment 2 in that the tap 2001 directly abuts against the tapping pressure plate 501 in the tapping device by the contact portion concave surface 2051 at the tip and the balls 2061 in the concave surface.

When the multi-station tapping device works, the tapping pressure plate 501 directly presses down the ball 2061 in the concave surface 2051 of the top contact part of the tap 2001, and then presses down the concave surface 2051 of the top contact part by the ball 2061, so that the tap 2001 moves downward.

Example 12

As shown in fig. 32 and 33, a drill bit 1004 is comprised of a cutting edge portion 1014 at the tip, a positioning shank 1024, a stop 1034, a sliding shank 1044, a segment of a tip contact 1054 at the tip of the drill bit;

the drill bit 1004 is stepped, and the diameter of the stop 1034 is greater than the diameter of the positioning rod 1024. The sliding rod 1044 is a regular quadrilateral prism. A cutting portion located at the tip cutting edge portion 1014 for drilling work; the drill positioning rod part 1024 is matched with the positioning hole 409 on the drilling mould when working, and the drill can be accurately positioned to the drilling position by the matching of the positioning rod part 1024 and the positioning hole 409 on the drilling mould. The sliding rod 1044 of the drill 1004 is sleeved into the center hole of the synchronous pulley of the drilling device to complete power transmission, so that the drill 1004 rotates and the cutting edge 1014 can perform cutting in the circumferential direction. The tip contact portion 1054 of the drill 1004 is fitted into a force application member provided on the drilling device, and on the one hand, is positioned in the vertical direction, and on the other hand, receives the downward force of the downward force application member, so that the drill can move downward to perform the cutting work of drilling.

A drilling device 400 comprises a drilling pressing plate 401, a drilling rotary power rotating shaft 402, a drilling synchronous belt transmission mechanism, a drill bit return spring 410, a drilling upper template 406 provided with a positioning hole 409, a drilling lower template plate 411 used for placing a workpiece to be machined, and a drilling pressing die positioning column 412; the drilling lower template plate 411 is arranged on the workbench 304; the drilling device is provided with a drill bit 1004; the cutting edge part 1014 of the drill bit is inserted into the positioning hole 409 of the upper drilling template, and is positioned on the upper drilling template 406 through the matching of the positioning rod part 1024 and the positioning hole 409 of the upper drilling template; a bit return spring 410 is arranged between the resisting part 1034 of the bit 1004 and the drilling upper template 406, and the bit 1004 is sleeved in the positioning spring 410; the drilling synchronous belt transmission mechanism comprises a drilling synchronous belt driving wheel, a drilling synchronous belt 413, a drilling tension wheel 405 and more than two drilling synchronous belt wheels 404, wherein the drilling synchronous belt driving wheel is arranged on a drilling power rotating shaft; the drilling synchronous belt driving wheel 403, the drilling tensioning wheel 405 and the drill bit 1004 are all installed on the drilling upper template 406, and the drilling synchronous belt 413 bypasses the drilling synchronous belt driving wheel 403, the synchronous belt wheel 404 and the drilling tensioning wheel 405 to form drilling synchronous belt transmission. The sliding rod 1044 of the drill 1004 is a square prism, the synchronous pulley 404 is provided with a square prism hole, and the square prism hole on the synchronous pulley 404 is matched with the square prism of the sliding rod. The drilling synchronous belt driving wheel 403 rotates to drive the drilling synchronous belt pulley 404, the synchronous belt pulley 404 on the drill bit 1004, and the drill bit 1004. A drilling press mold positioning column 412 is sleeved with a drilling positioning column spring 415 outside and passes through a drilling positioning hole of the drilling upper template to be hung on the drilling pressing plate 401; a drill positioning post spring 415 is installed between the drill press plate 401 and the drill upper template 406; a drilling lower template plate positioning column hole 416 corresponding to the drilling die positioning column 412 is arranged on the drilling lower template plate 406; a top member 431 and balls 432 are arranged below the drilling pressure plate 401, the cross section of the top member 431 is approximately H-shaped, a concave hole 433 for accommodating the balls is arranged on the top surface of the top member 431, the balls 432 are arranged in the concave hole 433, and a mounting hole 434 for accommodating a drill bit top end contact part 1054 is arranged at the lower part of the top member 431. The top member 431 fits over the bit tip contact 1054, and the bit tip contact 1054 fits into the mounting hole 434 of the drill bit. The balls 432 in the recesses 433 in the top surface of the top member 431 abut the drill press plate 401. A second spring 435 for returning the top member is provided below the top member 431, and the upper part of the second spring 435 is in contact with the top member 431 and the lower part thereof is in contact with a timing pulley 1037 on the drill bit. The mounting hole in the top member 431 is a through hole.

The multi-station drilling device 400 and the drill bit 1004 work in such a way that the drilling press plate 401 moves downwards, and the drilling press mold positioning column 412 arranged on the drilling press plate 401, the drilling upper template 406 and the components arranged on the drilling upper template 406 move downwards together; the drilling die positioning column 412 enters a positioning column hole 416 of the drilling lower template plate 411, the drilling upper template 406 is in contact with the drilling lower template plate 411 for mold closing, and the drilling upper template 406 simultaneously presses the workpiece to the drilling lower template plate 411 for fixing; the drilling positioning hole 409 corresponding to the drill bit on the drilling upper template 406 corresponds to the drilling position on the workpiece; the drilling power rotating shaft 402 rotates to drive the drilling synchronous belt driving wheel 403 to rotate, and drives the drilling synchronous belt 413 to rotate, so as to drive the synchronous belt wheel 404 and further drive the drill bit 1004 to rotate; the drill bit 1014 has a cutting function; the drilling press plate 401 continues to move downward, the drilling locator post spring 415 is compressed, and the drilling press mold locator post 412 moves upward relative to the drilling press plate; the drilling press plate 401 presses down the ball 432, and then the ball 432 presses down the top member 431, thereby pressing down the top contact portion 1054, so that the drill bit 1004 moves downward; the drill bit 1004 moves downward and the sliding shaft 1044 moves downward in response to the relative displacement of the timing pulley 404 and the second spring 435 compresses. The drill 1004 moves downward while rotating. As the drill press plate 401 moves down, the positioning rod part 1024 of the drill 1004 moves down along the drill upper template drill positioning hole 409, and the drill return spring 410 is compressed; with the further pressing of the drilling pressing plate 401, the drill bit 1004 continuously moves downwards, the drill bit 1004 penetrates through the drilling positioning hole 409 of the drilling upper template, the workpiece to be machined is cut to drill, after the drilling pressing plate 401 is pressed to a preset position, the drill bit 1004 reaches a preset drilling depth, and a preset drilling action is completed; after that, the drilling pressing plate 401 stops descending and turns into ascending, along with the ascending of the drilling pressing plate 401, the drill bit return spring 410 rebounds to drive the drill bit 1004 to ascend, and the cutting part 1014 of the drill bit leaves the hole machining position of the workpiece to be machined and returns to the drilling positioning hole 409 of the upper template for drilling; the drilling pressing plate 401 continuously rises, and the positioning column spring 415 rebounds to drive the drilling upper template 406 to move downwards relative to the drilling pressing plate 401 to return; the drilling power shaft 402 stops rotating and the drill bit 1004 stops rotating; the drill press plate 401 continues to rise back to the initial position, completing the drilling operation.

Alternatively, the mounting hole 434 may be a blind hole not communicating with the recessed hole 433.

Example 13

As shown in fig. 34 and 35, a tap 2004 includes a thread forming blade portion 2014 at the tip, a positioning stem portion 2024, a resisting portion 2034, a sliding stem portion 2044, a tip contact portion 2054 at the tip of the tap;

the tap 2004 is stepped, and the diameter of the stop portion 2034 is larger than the diameter of the positioning rod portion 2024. The sliding rod 2044 is a regular quadrangular prism. The thread forming blade 2014 at the tip serves as a cutting or extruding working part of tapping work; the tap positioning rod part 2024 is matched with the positioning hole 509 on the tapping die during operation, and the tap can be accurately positioned to the tapping position by the matching of the positioning rod part 2024 and the positioning hole 509 on the tapping die. The sliding rod portion 2044 of the screw tap 2004 is sleeved into a central hole of a synchronous pulley on the tapping device to achieve power transmission, so that the screw tap 2004 rotates, and the thread forming edge portion 2014 can perform cutting machining in the circumferential direction. The tip contact portion 2054 of the tap 2004 is fitted into a force application member provided in the tapping device, and is positioned in the vertical direction on the one hand, and receives a downward force of the downward force application member on the other hand, so that the tap can move downward to perform tapping cutting.

A tapping device 500 comprises a tapping pressing plate 501, a tapping rotary power rotating shaft 502, a tapping synchronous belt transmission mechanism, a screw tap return spring 510, a tapping upper template 506 provided with a positioning hole 509, a tapping lower template plate 511 used for placing a workpiece to be machined, and a tapping press mold positioning column 512; the tapping lower template plate 511 is arranged on the workbench 304; the tapping device is provided with a screw tap 2004; the screw tap thread forming blade 2014 is inserted into the tapping upper template positioning hole 509 and is positioned on the tapping upper template 506 through the matching of the positioning rod part 2024 and the tapping upper template positioning hole 509; a screw tap return spring 510 is arranged between the abutting part 2034 of the screw tap 2004 and the tapping upper die plate 506, and the screw tap 2004 is sleeved in the positioning spring 510; the tapping synchronous belt transmission mechanism comprises a tapping synchronous belt driving wheel 503 arranged on a tapping power rotating shaft 502, a tapping synchronous belt 513, a tapping tension wheel 505 and more than two tapping synchronous belt wheels 504; the tapping synchronous belt driving wheel 503, the tapping tension wheel 505 and the screw tap 2004 are all installed on the tapping upper template 506, and the tapping synchronous belt 513 bypasses the tapping synchronous belt driving wheel 503, the synchronous belt wheel 504 and the tapping tension wheel 505 to form tapping synchronous belt transmission. The sliding rod 2044 of the screw tap 2004 is a square prism, the synchronous pulley 504 is provided with a square prism hole, and the square prism hole on the synchronous pulley 504 is matched with the square prism of the sliding rod. The tapping synchronous belt driving wheel 503 rotates to drive the tapping synchronous belt wheel 504, the synchronous belt wheel 504 on the screw tap 2004 and the screw tap 2004 to rotate. A tapping positioning column spring 515 is sleeved outside the tapping pressing die positioning column 512, penetrates through a tapping positioning hole of the tapping upper template and is hung on the tapping pressing plate 501; the tapping positioning column spring 515 is arranged between the tapping pressing plate 501 and the tapping upper template 506; a tapping lower template plate positioning column hole 516 corresponding to the tapping die positioning column 512 is arranged on the tapping lower template plate 506; a top piece 531 and balls 532 are arranged below the tapping press plate 501, the cross section of the top piece 531 is approximately H-shaped, a concave hole 533 for accommodating the balls is arranged on the top surface of the top piece 531, the balls 532 are arranged in the concave hole 533, and a mounting hole 534 for accommodating a tap top end contact part 2054 is arranged at the lower part of the top piece 531. The tip 531 fits over the tap tip contact portion 2054, and the tap tip contact portion 2054 fits into the mounting hole 534 of the tap. The balls 532 in the concave holes 533 on the top surface of the top member 531 abut against the tapping press plate 501. A second spring 535 for returning the top is provided below the top 531, and the upper part of the second spring 535 is in contact with the top 531 and the lower part thereof is in contact with a timing pulley 1037 on the tap. The mounting hole in the top member 531 is a through hole.

The multi-station tapping device 500 and the tap 2004 work in such a way that the tapping press plate 501 moves downwards, and the tapping press mold positioning column 512, the tapping upper die plate 506 and the components arranged on the tapping upper die plate 506 which are arranged on the tapping press plate 501 move downwards together; the positioning column 512 of the tapping die enters the positioning column hole 516 of the tapping lower template plate 511, the tapping upper template 506 is in contact with the tapping lower template plate 511 for die assembly, and the tapping upper template 506 simultaneously presses the workpiece to the tapping lower template plate 511 for fixation; the tapping positioning holes 509, corresponding to the taps, on the tapping upper die plate 506 correspond to tapping positions on the workpiece; the tapping power rotating shaft 502 rotates to drive the tapping synchronous belt driving wheel 503 to rotate, and drives the tapping synchronous belt 513 to rotate, so that the synchronous belt wheel 504 is driven, and the screw tap 2004 is driven to rotate; the thread forming edge portion 2014 of the tap has cutting and extruding functions; the tapping press plate 501 continues to move downwards, the tapping positioning column spring 515 is compressed, and the tapping press mold positioning column 512 moves upwards relative to the tapping press plate; the tapping press plate 501 presses down the ball 532, and then the top member 531 is pressed down by the ball 532, and further the top end contact portion 2054 is pressed down, so that the tap 2004 moves down; the tap 2004 moves downward and the sliding rod portion 2044 moves downward relative to the timing pulley 504, compressing the second spring 535. The tap 2004 moves downward while rotating. As the tapping press plate 501 moves downward, the positioning rod portion 2024 of the tap 2004 moves downward along the tapping positioning hole 509 of the tapping upper die plate, and the tap return spring 510 is compressed; with the tapping press plate 501 further pressed down, the screw tap 2004 continuously moves downwards, the screw tap 2004 penetrates through the tapping positioning hole 509 of the tapping upper template to start cutting a workpiece to be machined for tapping, and after the tapping press plate 501 is pressed down to a preset position, the screw tap 2004 reaches a preset tapping depth to complete a preset tapping action; thereafter, the tapping pressing plate 501 stops descending and turns to ascend, meanwhile, the tapping power shaft 502 rotates reversely, the synchronous belt 513 drives the screw tap 2004 to rotate reversely, the screw tap return spring 510 and the second spring 535 rebound and return to the position for processing the hole to be processed along with the ascending of the tapping pressing plate 501, the screw tap 2004 ascends, and the screw tap thread forming edge portion 2014 leaves the hole processing position of the workpiece to be processed and returns to the tapping positioning hole 509 of the tapping upper die plate; the tapping press plate 501 continuously rises, and the positioning column spring 515 rebounds to drive the tapping upper die plate 506 to move downwards relative to the tapping press plate 501 and return; the tapping power shaft 502 stops rotating, and the tap 2004 stops rotating; the tapping press plate 501 continues to rise back to the initial position, and tapping work is completed.

Alternatively, the mounting hole 534 may be a blind hole not communicating with the recessed hole 533.

Claims

1. A multi-station drilling or tapping device is characterized by comprising a rotary power rotating shaft, a synchronous belt transmission mechanism, an upper template, a return spring, a lower template, a pressing plate and a pressing die positioning column, wherein the return spring is used for supporting a drill bit or a screw tap on the upper template; the upper template is provided with an upper template positioning hole matched with a positioning rod part of a drill bit or a screw tap; the synchronous belt transmission mechanism comprises a synchronous belt driving wheel, a synchronous belt and a synchronous belt wheel which are arranged on the power rotating shaft; the synchronous belt driving wheel is arranged on the pressing plate or the upper template;

a positioning column spring is sleeved outside the pressing-die positioning column and passes through the positioning hole of the upper template to be hung on the pressing plate; the positioning column spring is arranged between the pressing plate and the upper template;

the pressing plate and the top end contact part of the drill bit are directly abutted or pivoted or the pressing plate is provided with any mode that the top piece is abutted against the top end contact part of the drill bit or the screw tap.

2. A multi-station drilling or tapping apparatus as claimed in claim 1, wherein said head member is a ball screw which abuts a head contact portion of the drill bit or tap, said head contact portion being either flat or concave.

3. A multi-station drilling or tapping apparatus as claimed in claim 1, wherein said pressure plate is provided with a rotary shaft hole pivotally connected to a rotary shaft projecting from the top of said drill or tap.

4. A multi-station drilling or tapping apparatus as claimed in claim 1, wherein said head member is a set screw for abutment with a ball engaging portion of a concave contact surface of the top end of a drill bit or tap.

5. A multi-station drilling or tapping apparatus as claimed in claim 1, wherein said head member is generally H-shaped in cross-section, the top surface of the head member being provided with a recess for receiving a ball, the ball being disposed in the recess, the lower portion of the head member being provided with a mounting hole for receiving a contact portion of the top end of a drill bit or tap; and a second spring used for resetting the top piece is arranged below the top piece.

6. A multi-station drilling or tapping apparatus as claimed in claim 1, wherein more than one timing belt tensioner is provided in the timing belt drive mechanism.

7. A multi-station drilling or tapping apparatus as claimed in claim 1, wherein said lower die plate has lower die plate locating post holes corresponding to said die locating posts.

8. The working method of the multi-station drilling or tapping device is characterized in that: mounting a drill bit or tap on any one of the multi-station drilling or tapping apparatus as claimed in any one of claims 1 to 7; the synchronous pulley is arranged on a sliding rod part of the drill bit or the screw tap, and the contact part at the top end of the drill bit or the screw tap is pivoted on the pressure plate or is abutted by a top piece arranged on the pressure plate;

placing a workpiece to be processed on the lower template; the pressing plate moves downwards, and the upper template and the lower template are in contact die assembly; the power rotating shaft rotates to drive the synchronous belt to rotate, and the synchronous belt drives the synchronous belt pulley to rotate; the synchronous belt wheel drives the drill bit or the screw tap to rotate after rotating, and the pressing plate continues to move downwards; the pressing plate presses the drill bit or the screw tap downwards, so that the drill bit or the screw tap moves downwards;

the drill bit or the screw tap penetrates through the positioning hole of the upper template, and the workpiece to be machined is cut or extruded to carry out drilling or tapping work; after the pressing plate is pressed down to a preset position, the drill bit or the screw tap reaches a preset drilling depth to complete a preset drilling or tapping action; the pressure plate is turned to rise and rises along with the pressure plate; and the forming working edge part of the drill bit or the screw tap leaves the hole machining station of the workpiece to be machined and returns to the positioning hole of the upper template.