CN210789542U

CN210789542U - Tapping tool positioner for lathe

Info

Publication number: CN210789542U
Application number: CN201921333987.3U
Authority: CN
Inventors: 黄智勲
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-16
Filing date: 2019-08-16
Publication date: 2020-06-19
Anticipated expiration: 2029-08-16

Abstract

The utility model relates to a tapping tool positioner for a lathe, which mainly comprises a first seat body, a fixed seat, a second seat body and at least one tool positioning device; it is characterized in that: the at least one tapping tool is respectively arranged on the positioning part of one end bearing seat of the second seat body through a tool positioning device, the opposite end of the positioning part of the second seat body is an axial containing part which is rotationally positioned at one end of the first seat body, the opposite end of the axial containing part of the first seat body is provided with a positioning shaft which is arranged in a shaft hole of a lathe tailstock, and the tapping tool arranged on the second seat body is exactly corresponding to the positioning shaft of the first seat body along with the rotational positioning of the second seat body in the same axis.

Description

Tapping tool positioner for lathe

Technical Field

The utility model relates to a lathe is used attacks tooth instrument locator indicates especially that one kind sets up succinctly, and equipment, operation are simple and easy, convenient, can make the work piece implement the work of attacking tooth at the lathe, and is more simple and convenient, quick and have the security, and accords with actual practicality, novelty and creative lathe is used attacks tooth instrument locator.

Background

According to the tapping mode of a workpiece machined by a lathe, two modes are mainly distinguished; one of the machining methods is a Computer Numerical Control (CNC) lathe, which is mainly characterized in that a workpiece is placed in the CNC lathe, then program instructions are input into a memory of a numerical control system, and the computer compiling calculation and displacement control system operates to automatically cut and tap the workpiece to manufacture a part with a preset design. The other is that the traditional lathe is adopted, the workpiece is clamped and fixed on a lathe chuck and the cutting processing is finished one by one, and an operator firstly installs the center drill on a lathe tailstock and measures the distance for positioning; then, the lathe chuck is rotated forward, and the operator shakes the tailstock hand wheel of the lathe to make the center drill move forward one by one to lean against the rotating workpiece, so as to drill the center hole of the workpiece; then, the operator retreats the lathe tailstock backwards, removes the center drill for drilling the center hole, and installs the drill bit with the preset diameter on the lathe tailstock and measures the distance for positioning; then, the operator shakes the tailstock hand wheel again to enable the drill bit to drill the workpieces one by one; then, the operator retreats the lathe tailstock backwards, removes the drill bit which completes drilling, and installs and locks the screw tap on the lathe tailstock; then, the operator pushes the lathe tailstock forward to enable the screw tap to enter the drilled hole of the workpiece, the screw tap rotates forwards along with the lathe chuck by utilizing the tapping piece, the screw tap enters the drilled hole of the workpiece one by one to perform tapping, and the lathe tailstock moves forwards; then, after the tapping action of the tap on the workpiece is completed, an operator reversely rotates the lathe chuck, so that the tap and the lathe tailstock can retreat away from the workpiece one by one; accordingly, the expected tapping work can be completed on the workpiece on the lathe chuck. In the above-mentioned blind hole tapping, when the tapping screw reaches a predetermined position, the operator must first reduce the rotation speed of the lathe so as to avoid the screw from being broken. In addition, when the tapping that has finished tapping is withdrawn from the workpiece to the last tapping, the operator must move the entire lathe tailstock backward to the rear, and the tapping can be completely disengaged from the workpiece. The method is a mode of tapping a workpiece by using a traditional lathe, has the defects of slower manufacturing and processing speed compared with the implementation of the CNC lathe, but has the advantages of simplicity, convenience, economy, quickness and capability of being used at any time when the quantity of workpieces to be manufactured is small, or sample workpieces are to be manufactured, or small workpieces such as molds or jig parts are to be manufactured by using the traditional lathe for workpiece processing and tapping, so that a general machining factory can reserve one traditional lathe for using when small workpieces are to be manufactured no matter how many CNC machines are possessed.

Although the conventional lathe for machining and tapping a workpiece has the expected desired effect, the following disadvantages are obviously felt and need to be improved for the tapping operation:

1. the assembly tool is time consuming, cumbersome and inconvenient to implement; the center drill, the drill and the screw tap are respectively assembled on a lathe tailstock, and the distance is measured and positioned one by one, so that the phenomena of time consumption, trouble and inconvenience in operation are obviously caused.

2. The operation of drilling a center hole, drilling and tapping is carried out, an operator needs to perform forward pushing and backward moving actions on the lathe tailstock one by one, and the phenomena of troublesome operation, inconvenience, time waste and labor waste are obviously caused.

3. When the blind hole tapping is implemented, an operator must pay attention to the tapping depth of the screw tap, and the screw tap is fast to a preset depth, the lathe must be operated to reduce the speed and then stopped, so that the blind hole tapping is troublesome and inconvenient to operate, and the phenomenon of screw tap breakage is easy to occur.

4. In view of the above, when the tapping tool is used to tap a fixed point, the tapping tool is likely to be rubbed and touched with a workpiece because the lathe chuck is not stopped, so that the tapping tool is likely to rotate in the tapping chuck to generate high friction force, and further, the tapping tool is worn and even broken.

Disclosure of Invention

The present invention provides a tapping tool positioner for a lathe, which can improve the above-mentioned disadvantages, and can implement tapping work on a workpiece by using a conventional lathe, and has the advantages of simplicity, convenience, rapidness and safety.

In order to achieve the above object, the present invention mainly comprises a first seat, a fixing seat, a second seat and at least one tool positioning device; it is characterized in that: the at least one tapping tool is respectively arranged on the positioning part of one end bearing seat of the second seat body through a tool positioning device, the opposite end of the positioning part of the second seat body is an axial containing part which is rotationally positioned at one end of the first seat body, the opposite end of the axial containing part of the first seat body is provided with a positioning shaft which is arranged in a shaft hole of a lathe tailstock, and the tapping tool arranged on the second seat body is exactly corresponding to the positioning shaft of the first seat body along with the rotational positioning of the second seat body in the same axis.

The purpose of the utility model and the technical problem to be solved are realized by adopting the following technical scheme. According to the utility model, the tapping tool positioner for the lathe comprises a first seat body, a fixed seat, a second seat body and at least one tool positioning device; wherein, one end of the first base is provided with a locator, the adjacent side of the locating seat is provided with a locating shaft, the locating seat is provided with an axial containing part at the opposite end of the locating shaft, the axial containing part is eccentrically corresponding to the locating shaft, the peripheral surface of the axial containing part is provided with a predetermined number of locating grooves, the rear end of the axial containing part is provided with a sliding part which is connected with the locating grooves, and the locating shaft is a telescopic shaft arranged on a lathe tailstock; the fixed seat is a positioning shaft sleeved on the first seat body, fixedly integrated with the first seat body and a telescopic shaft for arranging a lathe tailstock; the second seat body has one bearing seat on one end, one combining seat with one axial line on the adjacent side, positioning parts in certain number on the same circumference line of the combining seat, limiting slots penetrating axially outside, several size lines in certain tapping depth and interval distance around the bearing seat, corresponding to the limiting slots, and one combination seat penetrating the axial holding part of the first seat body and with preset number of positioning keys on the circumference of the combining seat, and one rotating positioning part sliding in the corresponding positioning slot of the axial holding part of the first seat body and corresponding to the positioning shaft of the first seat body, and one stepped guide hole penetrating the combining seat for holding elastic element and one positioning rod, the positioning rod is fixedly arranged on the first seat body, so that the second seat body and the first seat body mutually elastically stretch and retract; the tool positioning device is used for mounting a tool for tapping work and is provided with a positioning body, one end of the positioning body is provided with a mounting part, the mounting part is assembled on the positioning part of the second seat body, the opposite end of the mounting part is provided with an assembling part, the assembling part is used for mounting and positioning the tool for tapping work, wherein, the positioning body assembled by the tap for tapping work is assembled on the positioning part of the second seat body in an elastic telescopic way, the tool positioning device for tapping assembly is provided with a limiter and a positioner, the limiter is arranged on the mounting part of the positioning body, the limiter comprises an axial chute arranged on the peripheral surface of the positioning body, the front end of the mounting part is provided with a sliding part which is communicated and connected with the axial chute, in addition, the axial chute is provided with a slide block, the upper end of the slide block is provided with a pivot bolt, and the pivot bolt is a limiting groove penetrating through one positioning part of the bearing seats of the second seat body, the outer end of the pivot bolt is provided with a stop block and a fixing groove, the stop block corresponds to a dimension marking line on the bearing seat and can be controlled by the fixing cap; in addition, the positioner is arranged on the bearing seat of the second seat body and can lock or release the positioning body arranged on the screw tap; thus, a positioning device for a tapping tool for a lathe can be completed.

The purpose of the present invention and the technical problem thereof can be further achieved by the following technical measures.

Preferably, the fixing base is provided with a shaft hole, and the shaft hole is sleeved on the positioning shaft of the first base and is fixedly arranged on the positioning seat of the first base by a screw.

Preferably, the positioning portion of the second base is a positioning hole.

Preferably, the positioning rod penetrating through the stepped guide hole of the second seat is fixedly secured to the first seat by a screw.

Preferably, the assembling part of the positioning body of the tool positioning device is used for assembling and positioning the central drill, the drill and the screw tap for tapping work; the tool positioning device for installing the center drill and the drill bit is fixedly arranged on the second base body by screws.

Preferably, the positioning body of the tool positioning device for installing the screw tap is provided with a stepped axial through hole, the axial through hole accommodates the elastic element and is penetrated by the positioning bolt, and the positioning bolt is installed on the bearing seat of the second seat body, so that the positioning body elastically stretches and retracts.

Preferably, the upper end of the sliding block is provided with a first guide block with smaller width for installing the pivot bolt, and the first guide block is just slidingly arranged in the limiting groove of the second seat body.

Preferably, the stop block of the tool positioning device for installing the tap is provided with a second guide block, and the second guide block is exactly slidably arranged in the limiting groove of the second seat body.

Preferably, the positioning body of the tool positioning device for installing the screw tap is displaced back and forth when the sliding block of the stopper is slidably provided with the axial sliding groove corresponding to the positioning body.

Preferably, the positioning body of the tool positioning device for installing the screw tap freely rotates when the sliding block of the stopper corresponds to the sliding part of the positioning body.

Preferably, the positioner of the tool positioning device for installing the screw tap is provided with a fixing bolt, and the fixing bolt can lock or release a positioning body for installing the screw tap.

Compared with the prior art, the utility model obvious advantage and beneficial effect have. Borrow by above-mentioned technical scheme, the utility model discloses tapping tool locator that lathe was used can reach considerable technical advancement and practicality to have the wide use value in the industry, it has following advantage at least:

1. the device is simple in arrangement and has manufacturing economy.

2. The assembly and the operation are simple and convenient, and the implementation convenience is realized.

3. The tapping machine can tap the workpiece machined by the lathe more conveniently, quickly and safely.

4. Can improve and even prevent the effects of abrasion and impact damage of the screw tap.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic perspective view of an embodiment of the present invention.

Fig. 2 is a front sectional view of fig. 1.

Fig. 3 is a schematic perspective view of an embodiment of a tool positioning device for a screw tap set according to the present invention.

Fig. 4 is a schematic perspective view of an embodiment of the tool positioning device for a center drill and a drill set according to the present invention.

Fig. 5 is a schematic side view of the first seat and the second seat of the present invention.

Fig. 6 is a front view of the second seat of the present invention with a center drill or drill bit mounted and pulled outwardly from the first seat.

Fig. 7 is a schematic perspective view of the present invention, in which the center drill, the drill and the tap are simultaneously installed and positioned.

Fig. 8 is a front view of a second seat-mounted tap of the present invention for tapping.

Fig. 9 is a front view schematically illustrating a second embodiment of tapping performed by the second seat-mounted tap of the present invention.

Fig. 10 is a front view schematically illustrating a tapping embodiment of the second seat-mounted tap of the present invention (iii).

Fig. 11 is a front view schematically illustrating a tapping embodiment of the second seat mounting tap of the present invention (iv).

Fig. 12 is a schematic front view of a completed tapping and recovery embodiment of the present invention.

[ description of main element symbols ]

A: a central drill B: drill bit

C: tapping D: workpiece

d: and (4) drilling holes E: set distance

K: and (3) a screw 10: first seat body

101: positioning seat 1011: axial receiving part

10111: positioning groove 10112: sliding part

102: positioning the shaft 20: fixed seat

201: shaft hole 202: screw nail

203: the screw 30: second seat body

301: bearing seat 3011 (3011'): positioning part

3012: defining slot 3013: dimension marking line

3014: stepped guide hole 3015: elastic element

3016: positioning rod 3017: screw nail

302: the combination seat 3021: positioning key

40(40'): tool positioning device 401 (401'): positioning body

4011(4011'): mounting portion 4012: assembling part

4013': axial through hole 4014': elastic element

4015': positioning pin 41: position limiter

411 axial runner 412: sliding part

413: the slide block 4131: first guide block

414: the pintle 415: stop block

4151: second guide block 416: fixing cap

42: the positioner 421: fixing bolt

50: the telescopic shaft 501: shaft hole

Detailed Description

Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6 and fig. 7, the present invention provides a positioning device for a tapping tool used in a lathe, which mainly comprises a first seat 10, a fixing seat 20, a second seat 30 and at least one tool positioning device 40; wherein,

the first seat body 10 (see fig. 1, 2, 5, 6 for details) is provided with a positioning seat 101 at one end, a positioning shaft 102 is provided at the adjacent side of the positioning seat 101, the positioning seat 101 is provided with an axial receiving portion 1011 at the opposite end of the positioning shaft 102, the axial receiving portion 1011 is eccentrically corresponding to the positioning shaft 102, a predetermined number of positioning grooves 10111 are planned on the peripheral surface of the axial receiving portion 1011, the rear end of the axial receiving portion 1011 is provided with a sliding portion 10112 engaging with the positioning grooves 10111, the positioning shaft 102 is installed at the position of a shaft hole 501 of a telescopic shaft 50 of a lathe tailstock (not shown) so as to be driven to move by the telescopic shaft 50;

the fixing base 20 (see fig. 1, 2, and 6 for details) is provided with a shaft hole 201, the shaft hole 201 is sleeved on the positioning shaft 102 of the first base 10, and is fixed on the positioning base 101 of the first base 10 by a screw 202, and is fixed on the telescopic shaft 50 of the lathe tailstock by a screw 203, so as to ensure the positioning stability of the first base 10;

the second seat body 30 (detailed figures 1, 2, 5, 6) has a supporting seat 301 at one end, a combining seat 302 with the same axis is provided at the adjacent side of the supporting seat 301, the supporting seat 301 has a predetermined number of positioning portions 3011 on the same circumference line of the opposite end of the combining seat 302, the positioning portions 3011 can be positioning holes, one of the positioning portions 3011 is provided with a limiting slot 3012 axially penetrating to the outside, the peripheral surface of the supporting seat 301 is provided with a plurality of dimension marking lines 3013 with predetermined tapping depth and predetermined distance intervals, the dimension marking lines 3013 correspond to the limiting slot 3012, the combining seat 302 is penetrated and combined in the axial accommodating portion 1011 of the first seat body 10, a predetermined number of positioning keys 3021 are planned and arranged on the peripheral surface of the combining seat 302, the positioning keys 3021 are exactly sliding arranged in the corresponding positioning slots 10111 combined in the axial accommodating portion 1011 of the first seat body 10, so that the second seat body 30 does not rotate arbitrarily, the supporting seat 301 has a stepped guiding hole 3014 penetrating through the combining seat 302, the stepped guiding hole 3014 accommodates the elastic element 3015 and a positioning rod 3016, the positioning rod 3016 is inserted in the elastic element 3015 and locked and positioned on the first seat 101 by a screw 3017, so that the second seat 30 and the first seat 10 are elastically stretched and contracted; after the combining seat 302 is inserted into the axial receiving portion 1011 of the first seat 10, the positioning slots 10111 of the axial receiving portion 1011 are matched with the positioning keys 3021 of the combining seat 302, and the positioning portions 3011 of the supporting seat 301 are rotated and positioned such that one of the positioning portions 3011' corresponds to the positioning shaft 102 of the first seat 10 along the same axis;

the at least one tool positioning device 40 (see fig. 1, 2, 3, 4, 6, 7 for details) is used for installing a central drill a, a drill B and a tap C for tapping, and is provided with a positioning body 401, one end of the positioning body 401 is provided with an installation part 4011, the installation part 4011 is assembled on a positioning part 3011 of the second base 30, the opposite end of the installation part 4011 is provided with an assembly part 4012, and the assembly part 4012 is used for installing and positioning the central drill a or the drill B or the tap C for tapping; wherein, the positioning body 401 '(see fig. 1, 2, 3) of the tool positioning device 40' for the screw tap C group is provided with a step-shaped axial through hole 4013 'for accommodating an elastic element 4014', the elastic element 4014 'is penetrated by a positioning bolt 4015' and installed on the bearing seat 301 of the second seat 30, so that the positioning body 401 'can keep elastic telescopic movement at any time, the tool positioning device 40' for the screw tap C group is provided with a stopper 41 and a positioner 42, the stopper 41 is an installation part 4011 'arranged on the positioning body 401', the stopper 41 comprises an axial sliding groove 411 arranged on the peripheral surface of the installation part 4011 ', a sliding part 412 with a small diameter is arranged at the front end of the installation part 4011', the sliding part 412 is communicated with the axial sliding groove 411, a sliding block 413 is slidably arranged at the axial sliding groove 411, and a first guide block 4131 with a small width is arranged at the upper end of the sliding block 413, a pivot bolt 414 is installed on the upper end of the first guide block 4131, the pivot bolt 414 penetrates through the limiting slot 3012 of one of the positioning portions 3011 of the supporting seat 301 of the second seat 30, and the first guide block 4131 is just slid in the limiting slot 3012, a stop 415 is disposed through the outer end of the pivot 414 and a fixing cap 416 is disposed thereon, the stop block 415 is further provided with a second guide block 4151, and the second guide block 4151 is just slid on the limiting groove 3012, so that when the fixing cap 416 is screwed, the stopper 415 can press the supporting seat 301 of the second seat 30, and the pivot 414 and the sliding block 413 can be kept in a stable position, when the slider 413 is slidably coupled to the axial sliding slot 411, the positioning body 401' can be restricted to move back and forth without rotating, however, when the slide block 413 is moved forward of the positioning body 401 'to correspond to the sliding portion 412, the positioning body 401' can freely rotate without limitation; in addition, the positioning device 42 is installed on the supporting seat 301 of the second seat 30, and is provided with a fixing bolt 421 corresponding to the positioning body 401 'installed on the screw tap C, and the fixing bolt 421 can lock or release the position of the positioning body 401' installed on the screw tap C;

as shown in fig. 1 and 7, the central drill a, the drill B, the tap C and other tools for tapping work are assembled on the corresponding positioning portions 3011(3011 ') of the second seat 30 simultaneously or individually by the tool positioning device 40 (40') according to the size of the workpiece or the convenience of operation, on the principle that the workpiece on the lathe chuck is not hit;

that is, with the above-mentioned structure of the present invention, when the workpiece clamped on the lathe chuck is cut and processed, and then the tapping operation is to be performed, please match with fig. 6 again, the operator assembles and positions the positioning shaft 102 of the first seat 10 of the tool positioner of the present invention on the telescopic shaft 50 of the lathe tailstock, and locks and maintains the positioning stability with the fixing seat 20, and then pulls the bearing seat 301 of the second seat 30 outward, so that the elastic coupling seat 302 is moved outward one by one from the axial receiving portion 1011 of the first seat 10, and the positioning key 3021 installed thereon is separated from the corresponding positioning groove 10111 of the positioning seat 101, and is connected to the sliding portion 10112 of the positioning seat 101, and then rotates the bearing seat 301 of the second seat 30, so that the central drill a installed on the bearing seat 301 of the second seat 30 through the tool positioning device 40 is exactly aligned with the positioning shaft 102, and the positioning shaft 102 of the first seat 10, The telescopic shaft 50 of the lathe tailstock corresponds to the center of the lathe chuck along the same axis, then the bearing seat 301 is released, so that the combination seat 302 can automatically and elastically reset through the elastic element 3015, and can be stably combined and positioned on the positioning seat 101 of the first seat body 10 through the positioning key 3021 and the positioning groove 10111, then the lathe tailstock is pushed forward to a set position, the tailstock hand wheel of the lathe is shaken to enable the telescopic shaft 50 to extend outwards one by one, and the central drill A can drill a central hole of a workpiece rotating on the lathe chuck one by one;

then, after the workpiece completes the center hole drilling operation, the operator does not need to push the lathe tailstock backwards, but only need to shake the tailstock hand wheel of the lathe to retract the telescopic shaft 50, and make the center drill a move backwards to separate from the workpiece, then, as mentioned above, pull the bearing seat 301 of the second seat 30 outwards, and make the combining seat 302 elastically move outwards from the axial containing portion 1011 of the first seat 10, and then rotate the bearing seat 301, so that the drill B installed on the bearing seat 301 through the tool positioning device 40 corresponds to the positioning shaft 102 of the first seat 10, the telescopic shaft 50 of the lathe tailstock, and the center of the lathe chuck in the same axial direction (as shown in fig. 6), then release the bearing seat 301, so that the second seat 30 automatically and elastically returns to be stably combined and positioned on the first seat 10, then the operator only needs to directly rotate the lathe tailstock hand wheel to make the telescopic wheel 50 extend outwards one by one, naturally, the drill bit B installed on the second seat 30 can simply and rapidly drill a rotating workpiece with a predetermined hole diameter;

in the tool positioning device 40 for installing the center drill a and the drill B, the installation portion 4011 of the positioning body 401 is assembled on the positioning portion 3011 of the second base 30 and then directly locked by the screw K (see fig. 6), so as to achieve the effect of firm positioning.

After the workpiece is drilled with the predetermined hole diameter, the tailstock of the lathe does not need to move backwards, and an operator only needs to shake the hand wheel of the tailstock of the lathe to retract the telescopic shaft 50, so that the drill bit B moves backwards to be separated from the workpiece, and the tapping of the screw tap C can be continuously prepared. That is, referring to fig. 8, 9, 10, 11 and 12, the operator pulls the supporting seat 301 of the second seat 30 outward to make the coupling seat 302 elastically move outward from the axial receiving portion 1011 of the first seat 10 (see fig. 6), rotates the supporting seat 301 again to make the tap C installed on the supporting seat 301 through the tool positioning device 40 'correspond to the positioning shaft 102 of the first seat 10, the telescopic shaft 50 of the lathe tailstock and the center of the lathe chuck on the same axis, releases the supporting seat 301 to make the second seat 30 automatically and elastically return to the first seat 10 for stable coupling and positioning, and then, directly rotates the hand wheel of the lathe tailstock to make the telescopic shaft 50 extend outward one by one, and makes the front end of the tap C installed on the tool positioning device 40' touch the drilling hole D of the workpiece D (see fig. 8), the workpiece D rotates along with the lathe chuck, and the tap C can simply, conveniently and quickly tap the workpiece D naturally;

when the screw tap C performs tapping on the workpiece D, because the positioning body 401 'of the positioning device 40' provided for the screw tap C is acted by the elastic element 4014 'and can perform elastic telescopic operation of inward extension and outward extension at the positioning portion 3011 of the bearing seat 301 at any time, when the telescopic shaft 50 of the lathe tailstock is actuated to extend forward and the front end of the screw tap C contacts the drill hole D of the workpiece D, the rotating workpiece D can guide the screw tap C to automatically enter the drill hole D, and particularly, the positioning body 401' can be pulled out one by one in a matching manner (as shown in fig. 9), so that the screw tap C can smoothly enter the drill hole D of the workpiece D, and further, the desired tapping operation can be completed on the drill hole D;

since the tool positioning device 40 'provided with the screw tap C is provided with the stopper 41, and the slide block 413 of the stopper 41 is slidably provided in the axial slide slot 411 of the positioning body 401', the screw tap C performs the tapping operation on the workpieces D one by one, so that when the positioning body 401 'of the tool positioning device 40' is extended out from the positioning portion 3011 of the support base 301 one by one, the positioning body 401 'is restricted by the slide block 413 of the stopper 41 to be linearly displaceable without being rotatable, and accordingly, the screw tap C provided in the positioning body 401' can perform the tapping operation stably and reliably without being rotated. Moreover, since the circumferential surface of the bearing seat 301 of the second seat 30 is provided with a plurality of dimension marking lines 3013 (see fig. 1 for details) for determining the tapping depth and having predetermined distance intervals, when the operator performs the tapping operation, the tap C can simply determine the tapping depth of the workpiece D by aligning the stopper 415 of the stopper 41 with the dimension marking lines 3013 of the predetermined tapping depth, then locking the fixing cap 416 to fix the stopper 415 to the bearing seat 301, and fixing the slide block 413 slidably disposed in the axial sliding slot 411 of the positioning body 401'; that is, after the operator prepares to perform tapping work, the stopper 415 of the stopper 41 is aligned with the dimension marking line 3013 of the desired tapping depth, and the fixing cap 416 is locked to fix the slider 413, and the fixed slider 413 is slidably disposed in the axial sliding slot 411 of the positioning body 401 ', so that when the tap C performs tapping work on the rotating workpiece D, the positioning body 401' is driven to automatically move outward, and when the front end sliding portion 412 of the positioning body 401 'which moves outward one by one corresponds to the fixed slider 413, naturally, the slider 413 will not be limited by the axial sliding slot 411, and the positioning body 401' will not move outward any more, and will rotate together with the tap C and the workpiece D, thereby the tap C can simply, quickly, reliably and safely perform tapping work on the workpiece D at a predetermined depth; that is, after the tapping depth is set by the position limiter 41, the slider 413 is fixed, and the tap C taps the workpiece D one by one, so that when the sliding portion 412 of the positioning body 401 'corresponds to the slider 413, the positioning body 401' and the tap C can rotate with the workpiece D, and the tapping action is not continued, so that the tap C can simply and reliably complete the tapping work at the predetermined depth, and can more reliably prevent and stop the collision with the workpiece D, thereby achieving the expected safety and improving the effects of tapping abrasion and damage; of course, the positioning of the retainer 41 on the bearing seat 301 of the second seat 30 can be easily adjusted, so as to reliably and safely perform the tapping operation with a predetermined depth on the workpiece D.

As described above, since the tool positioning device 40' provided with the tap C is additionally provided with the positioner 42, after the tapping work of the tap C is completed and the lathe is stopped, the operator does not need to push the lathe tailstock backwards, but only needs to lock the positioner 42, so that the positioning body 401' extending outward is fixed and fixed (see fig. 10 in detail), and then the tailstock hand wheel of the lathe is shaken to retract the telescopic shaft 50, so that the first base 10 moves backward together with the supporting base 301 of the second base 30 for a set distance E, and then the lathe is started to rotate reversely, the workpiece D rotating in the opposite direction will make the stationary tap C exit the workpiece D one by one (see fig. 11 for details), meanwhile, the bearing seat 301 and the combining seat 302 of the second seat 30 are elastically reset and positioned by the elastic element 3015 one by one, so as to achieve the purpose of simply and rapidly completing the tapping work of the workpiece.

After the positioner 42 is locked, the tailstock hand wheel of the lathe is swung to make the set distance E between the second seat 30 and the first seat 10 exceed the depth of the tapping of the workpiece D.

Above-mentioned, when accomplishing work piece D and attacking the tooth action to cause tap C to withdraw from work piece D, and cause second pedestal 30 elasticity to reset the location after first pedestal 10, as long as operating personnel loosens tool positioning device 40's locator 42 (like figure 12), no longer sets firmly this locating body 401 ', then tool positioning device 40 alright are reset by elastic element 4014 ' elasticity immediately, and cause tap C to take the location of resetting, and then cause the utility model discloses can be simple and convenient, prepare in advance to next endless attack tooth work fast.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention has been disclosed with the preferred embodiment, it is not limited to the present invention, and any skilled person in the art can make modifications or changes equivalent to the equivalent embodiment of the above embodiments without departing from the scope of the present invention, but all the modifications, changes and modifications of the above embodiments by the technical spirit of the present invention are within the scope of the present invention.

Claims

1. A tapping tool positioner for a lathe comprises a first seat body, a fixed seat, a second seat body and at least one tool positioning device; which is characterized in that, among others,

one end of the first seat body is provided with a positioner, the adjacent side of the positioning seat is provided with a positioning shaft, the positioning seat is provided with an axial containing part at the opposite end of the positioning shaft, the axial containing part is eccentrically corresponding to the positioning shaft, the peripheral surface of the axial containing part is provided with a predetermined number of positioning grooves, the rear end of the axial containing part is provided with a sliding part which is connected with the positioning grooves, and the positioning shaft is a telescopic shaft arranged on a lathe tailstock;

the fixed seat is a positioning shaft sleeved on the first seat body, fixedly integrated with the first seat body and a telescopic shaft for arranging a lathe tailstock;

the second seat body has one bearing seat on one end, one combining seat with one axial line on the adjacent side, positioning parts in certain number on the same circumference line of the combining seat, limiting slots penetrating axially outside, several size lines in certain tapping depth and interval distance around the bearing seat, corresponding to the limiting slots, and one combination seat penetrating the axial holding part of the first seat body and with preset number of positioning keys on the circumference of the combining seat, and one rotating positioning part sliding in the corresponding positioning slot of the axial holding part of the first seat body and corresponding to the positioning shaft of the first seat body, and one stepped guide hole penetrating the combining seat for holding elastic element and one positioning rod, the positioning rod is fixedly arranged on the first seat body, so that the second seat body and the first seat body mutually elastically stretch and retract;

the tool positioning device is used for mounting a tool for tapping work and is provided with a positioning body, one end of the positioning body is provided with a mounting part, the mounting part is assembled on the positioning part of the second seat body, the opposite end of the mounting part is provided with an assembling part, the assembling part is used for mounting and positioning the tool for tapping work, wherein, the positioning body assembled by the tap for tapping work is assembled on the positioning part of the second seat body in an elastic telescopic way, the tool positioning device for tapping assembly is provided with a limiter and a positioner, the limiter is arranged on the mounting part of the positioning body, the limiter comprises an axial chute arranged on the peripheral surface of the positioning body, the front end of the mounting part is provided with a sliding part which is communicated and connected with the axial chute, in addition, the axial chute is provided with a slide block, the upper end of the slide block is provided with a pivot bolt, and the pivot bolt is a limiting groove penetrating through one positioning part of the bearing seats of the second seat body, the outer end of the pivot bolt is provided with a stop block and a fixing groove, the stop block corresponds to a dimension marking line on the bearing seat and can be controlled by the fixing cap; in addition, the positioner is arranged on the bearing seat of the second seat body and can lock or release the positioning body arranged on the screw tap.

2. The tapping tool positioner for a lathe of claim 1, wherein: the fixing seat is provided with a shaft hole which is a positioning seat which is sleeved on the positioning shaft of the first seat body in a penetrating way and is fixedly arranged on the first seat body by a screw.

3. The tapping tool positioner for a lathe of claim 1, wherein: the positioning part of the second seat body is set as a positioning hole.

4. The tapping tool positioner for a lathe of claim 1, wherein: the positioning rod penetrating through the stepped guide hole of the second seat body is fixedly arranged on the first seat body by a screw.

5. The tapping tool positioner for a lathe of claim 1, wherein: the assembling part of the positioning body of the tool positioning device is used for assembling and positioning the central drill, the drill bit and the screw tap for tapping work; the tool positioning device for installing the center drill and the drill bit is fixedly arranged on the second seat body by a screw.

6. The tapping tool positioner for a lathe of claim 1, wherein: the positioning body of the tool positioning device for installing the screw tap is provided with a step-shaped axial through hole, the axial through hole contains an elastic element and a positioning bolt, and the positioning bolt is arranged on the bearing seat of the second seat body in parallel, so that the positioning body elastically stretches and retracts.

7. The tapping tool positioner for a lathe of claim 1, wherein: the upper end of the sliding block is provided with a first guide block with smaller width for installing a pivot bolt, and the first guide block is just glidingly arranged in a limiting groove of the second seat body.

8. The tapping tool positioner for a lathe of claim 1, wherein: the stop block is provided with a second guide block which is a limiting groove exactly arranged in a sliding way on the second seat body.

9. The tapping tool positioner for a lathe of claim 1, wherein: this supply instrument positioner's of tap installation location body, and be displacement around when the slider of stopper slides and establishes the axial spout that corresponds the location body.

10. The tapping tool positioner for a lathe of claim 1, wherein: this supply instrument positioner's of tap installation location body, and be the free rotation when the slider of stopper corresponds the sliding part of location body.

11. The tapping tool positioner for a lathe of claim 1, wherein: the positioner of the tool positioning device for installing the screw tap is provided with a fixing bolt which can lock or release a positioning body for installing the screw tap.