CN109571030B - Punching and pin pressing method for semi-automatic pin pressing machine - Google Patents
Punching and pin pressing method for semi-automatic pin pressing machine Download PDFInfo
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- CN109571030B CN109571030B CN201811512834.5A CN201811512834A CN109571030B CN 109571030 B CN109571030 B CN 109571030B CN 201811512834 A CN201811512834 A CN 201811512834A CN 109571030 B CN109571030 B CN 109571030B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/04—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass for both machining and other metal-working operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B39/00—General-purpose boring or drilling machines or devices; Sets of boring and/or drilling machines
- B23B39/16—Drilling machines with a plurality of working-spindles; Drilling automatons
- B23B39/161—Drilling machines with a plurality of working-spindles; Drilling automatons with parallel work spindles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
- B23P19/027—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same using hydraulic or pneumatic means
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Abstract
The invention discloses a punching and pin pressing method for a semi-automatic pin pressing machine, which comprises the steps that a transmission shaft to be processed is vertically placed on a transmission shaft positioning block manually, a clamping cylinder drives a transmission shaft clamping block to clamp the transmission shaft, a downward pressing hydraulic cylinder drives a downward pressing plate to move downwards, and the transmission shaft is inserted into a universal joint; the two drilling machines move to proper positions on two sides of the universal joint under the driving of the air cylinder respectively, the first drilling machine and the second drilling machine work simultaneously to drill the connected universal joint and the transmission shaft, and the first drilling machine resets after the drilling is finished; the pin feeding device feeds the pin to one side of the hole; the pin pressing mechanism moves to one side of the pin under the driving action of the second air cylinder, the pin pressing head presses the pin into the hole under the action of the second hydraulic cylinder, and the pin pressing is completed. The invention integrates the functions of pressing, punching, pin pressing and the like, and has the advantages of high production efficiency, simple operation, high punching and pin pressing precision and firm connection between the universal joint and the transmission shaft.
Description
Technical Field
The invention belongs to the technical field of machining, and particularly relates to a punching and pin pressing method of a semi-automatic pin pressing machine for punching and pin pressing of a universal joint transmission shaft.
Background
With the development of manufacturing industry, universal joints are more and more widely applied. The universal joint is a machine part for realizing variable-angle power transmission and is used for changing the position of a transmission axis direction. The existing connection between the universal joint and the transmission shaft adopts a separate processing method to respectively punch the transmission shaft and the universal joint, so that the operation technical requirement of workers is high, the working efficiency is low, the universal joint and the transmission shaft are easy to deviate in a separate punching process, the pressure pin is inconvenient, and the product quality is directly influenced in serious cases.
Disclosure of Invention
The invention aims to solve the technical problem of providing a punching and pin pressing method for a semi-automatic pin pressing machine aiming at the defects of the prior art, the punching and pin pressing method for the semi-automatic pin pressing machine integrates the functions of pressing, punching, pin pressing and the like, and has the advantages of high production efficiency, simplicity in operation, high punching and pin pressing precision and firm connection between a universal joint and a transmission shaft.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:
a punching and pin pressing method for a semi-automatic pin pressing machine adopts the semi-automatic pin pressing machine, the semi-automatic pin pressing machine comprises a rack, a transmission shaft pressing device, a universal joint clamping device, a pin conveying device and a punching and pin pressing device, and the transmission shaft pressing device, the universal joint clamping device, the pin conveying device and the punching and pin pressing device are all fixed on the rack;
the transmission shaft pressing device comprises a clamping pressing mechanism and a vertical rack, the clamping pressing mechanism comprises a pressing plate, a pressing rod, a positioning mechanism, a clamping mechanism and a pressing hydraulic cylinder, the vertical rack is fixedly connected to the rack, the top end of the vertical rack is connected with the pressing hydraulic cylinder, the tail end of a hydraulic rod of the pressing hydraulic cylinder is connected with a lifting guide block on the rear side wall of the pressing plate, the rear side wall of the pressing plate is connected with the front side wall of the vertical rack in a sliding manner, the top of the front side wall of the pressing plate is detachably connected with the pressing rod, the front side wall of the pressing plate is connected with the positioning mechanism and the clamping mechanism, and the positioning mechanism and the clamping mechanism are both located below the pressing rod; the positioning mechanism comprises a positioning block mounting seat and a transmission shaft positioning block, the positioning block mounting seat is connected with the front side wall of the lower pressing plate, the transmission shaft positioning block is detachably connected to the positioning block mounting seat, a positioning groove matched with the shape of the outer wall of the transmission shaft is formed in the outer side surface of the transmission shaft positioning block, and a magnet attracted with the transmission shaft is arranged in the transmission shaft positioning block; the clamping mechanism is positioned below the positioning mechanism and comprises a clamping cylinder, 2 clamping block mounting seats and 2 transmission shaft clamping blocks, the cylinder body of the clamping cylinder is connected with the front side wall of the lower pressing plate, the two ends of the clamping cylinder are connected with the clamping block mounting seats, and the transmission shaft clamping blocks are placed on the clamping block mounting seats;
the universal joint clamping device comprises a universal joint base, a universal joint mounting seat and two fixing and clamping mechanisms arranged on two sides of a universal joint, wherein the universal joint base is fixedly connected to the rack, the universal joint mounting seat is detachably inserted on the universal joint base, and the two fixing and clamping mechanisms are fixedly connected to the rack and are arranged oppositely;
the punching and pin pressing device comprises a first drilling machine, a second drilling machine, a first base, a second base, a first air cylinder, a second air cylinder and a pin pressing mechanism, wherein the first base and the second base are respectively positioned on two sides of a universal joint base of the universal joint clamping device and are fixedly connected to a rack; the upper sliding block of the second base is connected with a second moving plate, one side of the second moving plate is provided with a second air cylinder, a cylinder body of the second air cylinder is fixedly connected to the rack, the tail end of an air cylinder rod of the second air cylinder is connected with the second moving plate, one side of the upper part of the second moving plate is connected with a second drilling machine, and the other side of the upper part of the second moving plate is connected with a pin pressing mechanism;
the drill bit center of the first drilling machine, the drill bit center of the second drilling machine and the center of the universal joint mounting seat are on the same straight line;
the pin feeding device comprises a vibration disc, a guide groove, a rodless cylinder and a pin feeding moving mechanism, the vibration disc is located on one side of the rack, an outlet of the vibration disc is communicated with one end of the guide groove, the rodless cylinder is connected to the rack through a third base and located on one side of the universal joint clamping device, the feeding moving mechanism comprises a pin loading block and a moving block, the moving block of the rodless cylinder is connected with the moving block, a square groove is formed in one end of the moving block, the pin loading block is located in the square groove, and the other end of the guide groove is communicated with the pin loading block at the initial position;
the punching and pin pressing method comprises the following steps:
(a) according to the types of the universal joint and the transmission shaft, a lower pressing rod, a transmission shaft positioning block and a transmission shaft clamping block which are matched with the transmission shaft are selected, and a universal joint mounting seat which is matched with the universal joint is selected;
(b) a lower pressing rod is arranged at the top of the front side wall of the lower pressing plate, a transmission shaft positioning block is arranged on a positioning block mounting seat, a transmission shaft clamping block is arranged on a clamping block mounting seat, and a universal joint mounting seat is arranged on a universal joint base;
(c) the universal joint clamping device acts: manually connecting a universal joint to be processed on a universal joint mounting seat in a sleeved mode, moving a clamping head in one fixed clamping mechanism to one side of the universal joint under the driving action of a first hydraulic cylinder, enabling one side of the universal joint to lean against the clamping head, moving the clamping head in the other fixed clamping mechanism to the universal joint under the driving action of the first hydraulic cylinder, and clamping the universal joint under the combined action of the two fixed clamping mechanisms;
(d) the transmission shaft pressing device acts: the transmission shaft to be processed is vertically placed in the positioning groove of the transmission shaft positioning block manually, the upper end of the transmission shaft is in contact with the bottom surface of the lower pressing rod, the clamping cylinder drives the transmission shaft clamping block to clamp the transmission shaft, the lower pressing hydraulic cylinder drives the lower pressing plate to move downwards, the transmission shaft moves downwards along with the lower pressing plate, the axes of the lower pressing rod, the transmission shaft and the universal joint are on the same straight line, the transmission shaft moves along with the lower pressing plate and is pressed into the universal joint, the clamping cylinder releases the transmission shaft, and the transmission shaft pressing device stops acting to keep a pressing state;
(e) the punching and pin pressing device acts: the first cylinder drives the first drilling machine to move on the first base towards the direction of the universal joint, after the first drilling machine moves to a preset position, the first drilling machine and the second drilling machine work simultaneously to drill the universal joint and the transmission shaft until the universal joint and the transmission shaft penetrate through the universal joint and the first cylinder is reset after drilling is finished;
(f) the pin feeding device acts: the vibration disc vibrates to convey the pin to the pin loading block through the guide chute, and the rodless cylinder drives the pin loading block to move to one side of the hole through the moving block;
(g) the punching and pin pressing device acts: the second cylinder drives the second moving plate to move, the second moving plate conveys a pin pressing head of the pin pressing mechanism to one side of the pin carrying block, the pin pressing head, a pin and a hole in the pin carrying block are ensured to be on the same horizontal line, the second hydraulic cylinder of the pin pressing mechanism drives the pin pressing head to move towards the direction of the hole, the pin in the pin carrying block is pressed into the hole, the pin pressing is completed, and the second hydraulic cylinder, the second cylinder, the rodless cylinder, the lower hydraulic cylinder and the first hydraulic cylinder of the fixed clamping mechanism of the pin pressing mechanism reset.
As a further improved technical scheme of the invention, the rear side wall of the lower pressure plate is in sliding connection with the front side wall of the vertical rack through a guide rail and a slide block, and a connecting plate at the top of the front side wall of the lower pressure plate is in threaded connection with a lower pressure rod.
As the further improved technical scheme of the invention, the number of the positioning mechanisms is 2, the number of the clamping mechanisms is 2, and one positioning mechanism, one clamping mechanism, the other positioning mechanism and the other clamping mechanism are sequentially connected with the lower pressing plate from top to bottom through screws; and a clamping groove matched with the shape of the outer wall of the transmission shaft is formed in the clamping surface of the transmission shaft clamping block of the clamping mechanism.
As a further improved technical scheme, the transmission shaft pressing device further comprises a limiting structure, the limiting structure comprises a limiting rod mounting seat, a limiting rod and a base plate, the limiting rod mounting seat is fixedly connected to the base through a bolt, the bottom of the limiting rod is in threaded connection with a thread groove of the limiting rod mounting seat, the base plate is fixedly connected to the top of the limiting rod, and the limiting structure is located right below the lower pressing plate and used for limiting the downward moving stroke of the lower pressing plate.
As a further improved technical scheme of the present invention, the fixed clamping mechanism includes a hydraulic cylinder mounting seat, a first hydraulic cylinder, a clamping head, a movable piston rod, a sleeve and a sleeve base, the hydraulic cylinder mounting seat and the sleeve base are both fixedly connected to the frame and located on the same horizontal line, the first hydraulic cylinder is fixedly connected to the hydraulic cylinder mounting seat, the sleeve is fixedly connected to the sleeve base, the sleeve is sleeved outside the movable piston rod, the movable piston rod can slide in the sleeve, the end of the piston rod of the first hydraulic cylinder is connected to one end of the movable piston rod, and the other end of the movable piston rod is connected to the clamping head for clamping the universal joint.
As a further improved technical scheme of the present invention, a bar-shaped oil guide groove is formed in an upper portion of the movable piston rod, a bar-shaped guide block is arranged at a lower portion of the movable piston rod, a bar-shaped guide groove is formed in a lower surface of an inner portion of the sleeve, the movable piston rod penetrates through the inner portion of the sleeve, the movable piston rod is in clearance fit with the sleeve, the bar-shaped guide block of the movable piston rod is embedded in the bar-shaped guide groove and can slide in the bar-shaped guide groove, an openable and closable oil filling nozzle is formed in an upper portion of the sleeve, and the oil filling nozzle.
As a further improved technical scheme of the invention, one side of the upper part of the first base is connected with two guide rails, a first moving plate is connected above the guide rails through a sliding block, the other side of the upper part of the first base is connected with a first air cylinder, the first moving plate is connected with the tail end of a piston rod of the first air cylinder through a fixed block, and the upper part of the first moving plate is connected with a first drilling machine; the second base has 2 and upper portion all is connected with the guide rail and is connected with the second movable plate through the slider on this guide rail.
In a further improved aspect of the present invention, the pin pressing mechanism includes a second hydraulic cylinder, an L-type connecting plate, and a pin pressing head, wherein a cylinder body of the second hydraulic cylinder is connected to an upper portion of the second moving plate via an L-type connecting plate, a cylinder rod of the second hydraulic cylinder is connected to the pin pressing head, and the second hydraulic cylinder drives the pin pressing head to perform pin pressing.
As a further improved technical scheme of the invention, the pin conveying device further comprises a movable positioning block and a graduated scale, the guide rod of the rodless cylinder is connected with the movable positioning block, the graduated scale is arranged on one side of the rodless cylinder, the side surface of the movable positioning block is connected with a scale indicating arrow, and the scale indicating arrow points to the graduated scale on one side of the rodless cylinder; the feeding moving mechanism further comprises a pin baffle plate, the pin baffle plate is located on one side of the pin carrying block, and the bottom of the pin baffle plate is fixedly connected to the rack.
The invention has the beneficial effects that:
(1) the universal joint is manually fixed on the universal joint mounting seat, the universal joint is fixed by the universal joint clamping device, the transmission shaft is fixed on the transmission shaft pressing device, and the transmission shaft is fixedly clamped by the clamping pressing mechanism. The transmission shaft is pressed into the universal joint under the driving action of the clamping and pressing mechanism, and then punching and pin pressing are carried out. Repeating the above steps. The punching and pin pressing method is simple and convenient in operation process, low in requirement on workers, high in automation degree, capable of improving working efficiency and reducing labor cost, capable of simultaneously performing bidirectional punching on the transmission shaft and the universal joint through the first drilling machine and the second drilling machine, free of deviation, high in matching precision, convenient to press pin, capable of improving connection quality between the transmission shaft and the universal joint, strong in connection firmness and capable of prolonging service life of products.
(2) The transmission shaft can vertically lean against the transmission shaft positioning block, the top end of the transmission shaft is contacted with the bottom end of the lower pressing rod, the axes of the transmission shaft, the lower pressing rod and the universal joint are ensured to be on the same straight line, and the transmission shaft is conveniently pressed into the universal joint. Lower depression bar, transmission shaft locating piece and the tight piece of transmission shaft clamp can carry out supporting change according to the difference of transmission shaft model, are convenient for punch the pressure pin to the transmission shaft and the universal joint of different models more, and transmission shaft locating piece mid-mounting has the magnetite, and is fixed with the transmission shaft, has avoided artifical fixed, has improved the security of device.
(3) The limiting mechanism effectively prevents the transmission shaft from excessively moving and pressing down, avoids damaging the universal joint, and avoids damaging other mechanisms due to excessively moving when the pressing-down mechanism is clamped without acting force of the pressing-down hydraulic cylinder.
(4) The universal joint mounting base can be replaced according to different universal joint types.
(5) The upper part of the movable piston rod of the fixed clamping mechanism is provided with the strip-shaped oil guide groove, the upper part of the sleeve is provided with the openable oil injection nozzle, and the arrangement of the oil injection nozzle and the strip-shaped oil guide groove realizes the lubrication of the movable piston rod, prolongs the service life of the mechanism and reduces the friction. The strip-shaped guide groove and the strip-shaped guide block of the sleeve improve the moving stability and accuracy of the moving piston rod.
(6) The pin baffle plate of the pin feeding device effectively prevents the pin from falling off in the pin feeding process of the vibration disc, and the pin carrying block can be replaced according to different types of the pin. The movable positioning block is adjusted under the reference of the graduated scale according to the position of the pin, so that the accuracy of the position of the pin is guaranteed, and the working efficiency of the pin is improved.
(7) The first drilling machine and the second drilling machine work simultaneously, and the bidirectional drilling mode improves the working efficiency and saves the time cost. The pressure round pin head can move suitable position under the drive effect of second pneumatic cylinder and carry out the accurate pressure round pin, has improved the rate of accuracy of pressing the round pin, resistance when reducing the pressure round pin.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural view of a propeller shaft depressing device of the present invention.
Fig. 3 is a structural view of the lower pressure plate in fig. 2.
Fig. 4 is a rear view of fig. 2.
Fig. 5 is a schematic structural view of the limiting structure in fig. 2.
Fig. 6 is a schematic structural view of the positioning mechanism in fig. 2.
Fig. 7 is a schematic view of the structure of the clamping mechanism of fig. 2.
Fig. 8 is a schematic view of the structure of the gimbal clamping device of the present invention.
Fig. 9 is a schematic structural view of the gimbal base and the gimbal mount of fig. 8.
Fig. 10 is a schematic view of the structure of the fixed clamping mechanism of fig. 8.
Fig. 11 is a partial schematic view of fig. 10.
Fig. 12 is a schematic view of the sleeve structure of fig. 10.
Fig. 13 is a schematic structural view of the pin feeder of the present invention.
Fig. 14 is a partial schematic view of fig. 13.
Fig. 15 is an isometric view of fig. 13.
Fig. 16 is a schematic structural diagram of the movable positioning block in fig. 14.
Fig. 17 is a schematic structural view of the stopper plate of fig. 15.
Fig. 18 is a schematic structural view of the pin feeding moving mechanism in fig. 14.
Fig. 19 is a schematic view of the structure of the carrier pin block of fig. 18.
FIG. 20 is a schematic view of the punching and pinning device of the present invention.
FIG. 21 is a schematic view of the first drill of FIG. 20
FIG. 22 is an isometric view of FIG. 20
Fig. 23 is a schematic structural view of the press pin mechanism of fig. 20.
Detailed Description
The following further describes embodiments of the present invention with reference to fig. 1 to 23:
referring to fig. 1, the present embodiment provides a semi-automatic pin pressing machine, the main body part includes five parts: the device comprises a frame 1, a transmission shaft pressing device 2, a universal joint clamping device 3, a pin conveying device 4 and a punching and pin pressing device 5. The utility model discloses a universal joint, including transmission shaft, universal joint clamping device, transmission shaft, pin pressing device, pin conveying device, pin pressing device, pin conveying device, universal joint clamping device, pin pressing device.
Referring to fig. 2 to 7, the transmission shaft pressing device 2 comprises a clamping pressing mechanism and a vertical frame 2-1, the clamping pressing mechanism comprises a pressing plate 2-3, a pressing rod 2-4, a positioning mechanism 2-5, a clamping mechanism 2-6 and a pressing hydraulic cylinder 2-7, the bottom of the vertical frame 2-1 is fixedly connected to the frame 1, and the structure of the pressing plate 2-3 is as shown in fig. 3. Referring to FIG. 4, the top end of the vertical rack 2-1 is connected with a lower hydraulic cylinder 2-7 through a bolt, the tail end of a hydraulic rod of the lower hydraulic cylinder 2-7 is connected with a lifting guide block 2-3-1 on the rear side wall of a lower press plate 2-3 through a bolt, the rear side wall of the lower press plate 2-3 is connected with the front side wall of the vertical rack 2-1 through a guide rail 2-9 and a slide block 2-8 in a sliding manner, a connecting plate 2-3-2 at the top of the front side wall of the lower press plate 2-3 is connected with a lower press rod 2-4 through a thread, the front side wall of the lower press plate 2-3 is connected with a positioning mechanism 2-5 and a clamping mechanism 2-6, and the positioning mechanism 2-5 and the clamping mechanism 2-6 are both positioned below the lower press, the positioning mechanism 2-5 is used for fixing the transmission shaft through a magnet, the clamping mechanism 2-6 is used for clamping the transmission shaft, the top end of the transmission shaft is in contact with the bottom end of the lower pressing rod 2-4, and the axle center of the universal joint clamped by the lower pressing rod 2-4, the transmission shaft and the universal joint clamping device 3 is on the same straight line.
Referring to fig. 2, the number of the positioning mechanisms 2-5 of the present embodiment is 2, the structure of the positioning mechanism 2-5 is shown in fig. 6, and includes a positioning block mounting seat 2-5-1 and a transmission shaft positioning block 2-5-2, the positioning block mounting seat 2-5-1 is connected with the front side wall of the lower press plate 2-3 through a screw, the positioning block mounting seat 2-5-1 is connected with the transmission shaft positioning block 2-5-2, the transmission shaft positioning block 2-5-2 is detachably connected with the positioning block mounting seat 2-5-1, the outer side surface of the transmission shaft positioning block 2-5-2 is provided with a positioning groove 2-5-3 matched with the outer wall shape of the transmission shaft, and a magnet for sucking the transmission shaft is arranged in the transmission shaft positioning; 2 clamping mechanisms 2-6 are respectively positioned below 2 positioning mechanisms 2-5, the structure of each clamping mechanism 2-6 is shown in figure 7 and comprises a clamping cylinder 2-6-1, 2 clamping block mounting seats 2-6-2 and 2 transmission shaft clamping blocks 2-6-3, the cylinder body of the clamping cylinder 2-6-1 is connected with the front side wall of the lower pressing plate 2-3 through a screw, the two ends of the clamping cylinder 2-6-1 are respectively connected with the clamping block mounting seats 2-6-2, the transmission shaft clamping blocks 2-6-3 are placed on the clamping block mounting seats 2-6-2, the clamping block mounting seats 2-6-2 are movably matched with the transmission shaft clamping blocks 2-6-3 in a clearance mode, and the clamping surfaces of the transmission shaft clamping blocks 2-6-3 are provided with clamping surfaces matched with the shape of the outer wall of the transmission shaft And the clamping cylinder 2-6-1 is used for driving the two transmission shaft clamping blocks 2-6-3 to clamp the transmission shaft fixed by the positioning mechanism 2-5 through the clamping block mounting seats 2-6-2.
When the transmission shaft pressing device 2 is used, a transmission shaft is vertically placed in the positioning groove 2-5-3 of the transmission shaft positioning block 2-5-2, the top end of the transmission shaft is contacted with the bottom of the pressing rod 2-4, and the magnet in the transmission shaft positioning block 2-5-2 attracts and fixes the transmission shaft. The clamping cylinder 2-6-1 drives the transmission shaft clamping block 2-6-3 to clamp the transmission shaft; the downward pressing hydraulic cylinder 2-7 drives the downward pressing plate 2-3 to move downwards so as to drive the transmission shaft to move downwards, the downward pressing rod 2-4 also presses the transmission shaft, the downward pressing rod 2-4, the transmission shaft and the axle center of the universal joint are on the same straight line, so that the transmission shaft is conveniently pressed into the universal joint, the transmission shaft moves along with the downward pressing plate 2-3, and the transmission shaft pressing device stops acting after the depth of the transmission shaft inserted into the universal joint meets a set value, so that the downward pressing state is kept. According to the embodiment, the lower pressing rod 2-4, the transmission shaft positioning block 2-5-2 and the transmission shaft clamping block 2-6-3 can be replaced in a matched mode according to different types of transmission shafts, punching and pin pressing can be performed on the transmission shafts and universal joints of different types conveniently, the magnet is installed in the transmission shaft positioning block 2-5-2 and fixes the transmission shafts, manual operation is avoided, and safety of the device is improved. The transmission shaft positioning block 2-5-2 and the transmission shaft clamping block 2-6-3 can be replaced according to transmission shafts with different section sizes, so that different transmission shafts can be fixed on the lower pressing plate 2-3; the lower pressure rods 2-4 can be replaced according to different types of transmission shafts, so that the distances between the lower planes of the different transmission shafts and the bottoms of the lower pressure plates 2-3 are consistent.
Referring to fig. 1 and 5, the drive shaft depressing device 2 of the present embodiment further includes a limiting structure 2-2, the limiting structure 2-2 comprises a limiting rod mounting seat 2-2-3, a limiting rod 2-2-2 and a backing plate 2-2-1, the limiting rod mounting seat 2-2-3 is fixedly connected to the vertical frame 2-1 through a bolt, the bottom of the limiting rod 2-2-2 is in threaded connection with the thread groove of the limiting rod mounting seat 2-2-3 and belongs to interference fit, the backing plate 2-2-1 is fixedly connected with the top of the limiting rod 2-2-2, the limiting structure 2-2 is located right below the lower pressing plate 2-3 and used for limiting the downward moving stroke of the lower pressing plate 2-3. When the lower pressing plate 2-3 moves downwards, the limiting structure 2-2 limits the lowest moving position of the lower pressing plate 2-3, the base plate 2-2-1 of the limiting structure 2-2 has a buffering effect on the lower pressing plate 2-3, and meanwhile, when the device stops working, the phenomenon that the lower pressing hydraulic cylinder 2-7 has no acting force and the lower pressing plate 2-3 presses downwards to damage the universal joint clamping device 3 is avoided. The limiting structure 2-2 and the clamping and pressing mechanism are arranged in a plane, and the limiting structure 2-2 is positioned under the pressing plate 2-3. The limiting structure 2-2 effectively prevents the transmission shaft from excessively moving and pressing down, avoids damage to the universal joint, and avoids damage to other mechanisms caused by excessively moving a clamping pressing mechanism of the transmission shaft pressing device 2 when the pressing hydraulic cylinder 2-7 has no acting force.
Referring to fig. 8, the universal joint clamping device 3 of the present embodiment includes a universal joint base 3-1, a universal joint mounting base 3-2, and two fixed clamping mechanisms 3-3 disposed at two sides of the universal joint, wherein the universal joint base 3-1 is fixedly connected to the frame 1 through a circular hole, referring to fig. 9, a circular hole is formed at the bottom of the universal joint base 3-1 for positioning the position of the universal joint; the universal joint mounting seat 3-2 is detachably inserted on the universal joint base 3-1, the universal joint mounting seat 3-2 is used for being sleeved with a universal joint, and the shape of the outer wall of the universal joint mounting seat 3-2 is matched with the inner hole wall of the universal joint. The two fixed clamping mechanisms 3-3 are fixedly connected to the rack 1 and are used for clamping the universal joint sleeved by the universal joint mounting seat 3-2. The universal joint mounting base 3-2 of the embodiment can be replaced according to different types of universal joints, and the annular hole of the universal joint base 3-1 is formed to facilitate the installation and the adjustment of the position of the universal joint when the universal joint base is replaced, so that the universal joint and the axis of the transmission shaft are located on the same straight line.
Referring to fig. 8, the two fixed clamping mechanisms 3-3 are oppositely arranged, referring to fig. 10, the fixed clamping mechanism 3-3 comprises a hydraulic cylinder mounting seat 3-3-1, a first hydraulic cylinder 3-3-2, a clamping head 3-3-4, a movable piston rod 3-3-5, a sleeve 3-3-3 and a sleeve base 3-3-10, the hydraulic cylinder mounting seat 3-3-1 and the sleeve base 3-3-10 are both fixedly connected to the frame 1 and located on the same horizontal line, the first hydraulic cylinder 3-3-2 is fixedly connected to the hydraulic cylinder mounting seat 3-3-1, the sleeve 3-3-3 is fixedly connected to the sleeve base 3-3-10, and the sleeve 3-3-3 is sleeved outside the movable piston rod 3-3-5 and movably connected to the movable piston rod 3-3-5 The plug rod 3-3-5 can slide in the sleeve 3-3-3, the tail end of the piston rod of the first hydraulic cylinder 3-3-2 is connected with one end of the movable piston rod 3-3-5 through a nut, and the other end of the movable piston rod 3-3-5 is connected with a clamping head 3-3-4 for clamping a universal joint through threads. The sleeve 3-3-3 of the present embodiment is sleeved on the movable piston rod 3-3-5. The universal joint is sleeved on a universal joint mounting seat 3-2, one fixed clamping mechanism 3-3 moves to a proper position through a first hydraulic cylinder 3-3-2, the universal joint is leaned against a clamping head 3-3-4, the other clamping head 3-3-4 moves under the driving action of the other first hydraulic cylinder 3-3-2, the universal joint is clamped, and the universal joint is firmly fixed by the fixed clamping mechanism 3-3. The transmission shaft pressing device 2 presses the transmission shaft down into the universal joint until the depth of the transmission shaft inserted into the universal joint meets a set value, and then the pressing state is kept.
Referring to fig. 11, the upper portion of the movable piston rod 3-3-5 of the present embodiment is provided with a strip-shaped oil guide groove 3-3-6, the lower portion is provided with a strip-shaped guide block 3-3-7, referring to fig. 12, the inner lower surface of the sleeve 3-3-3 is provided with a strip-shaped guide groove 3-3-9, the movable piston rod 3-3-5 penetrates through the sleeve 3-3-3 and the movable piston rod 3-3-5 is in clearance fit with the sleeve 3-3-3, the strip-shaped guide block 3-3-7 of the movable piston rod 3-3-5 is embedded in the strip-shaped guide groove 3-3-9 and can slide in the strip-shaped guide groove 3-3-9, the upper portion of the sleeve 3-3-3-3 is provided with an openable oil injection nozzle 3-3-8 and the oil injection nozzle 3-3- And a nut without a central hole is connected to the oil injection nozzle 3-3-8 through threads right above the strip-shaped oil guide groove 3-3-6, and the oil injection nozzle 3-3-8 is closed through the nut. The arrangement of the oil injection nozzle 3-3-8 and the strip-shaped oil guide groove 3-3-6 in the embodiment realizes lubrication of the movable piston rod 3-3-5, prolongs the service life of the mechanism and reduces friction. The strip-shaped guide groove 3-3-9 and the strip-shaped guide block 3-3-7 improve the movement stability and accuracy of the movable piston rod 3-3-5.
Referring to fig. 20, the punching and pin pressing device 5 of the present embodiment includes a first drilling machine, a second drilling machine, a first base 5-1, a second base 5-4, a first cylinder 5-8, a second cylinder 5-12, and a pin pressing mechanism 5-7, where the first base 5-1 and the second base 5-4 are respectively located on two sides of a gimbal base 3-1 of a gimbal clamping device 3 and both are fixedly connected to the frame 1. Referring to fig. 21 and 22, two guide rails are connected to one side of the upper portion of the first base 5-1, a first moving plate 5-9 is connected to the upper portion of the guide rails through a slider, a first cylinder 5-8 is connected to the other side of the upper portion of the first base 5-1, the first moving plate 5-9 is connected to the tail end of a piston rod of the first cylinder 5-8 through a fixing block 5-10, and a first drilling machine is connected to the upper portion of the first moving plate 5-9. Referring to fig. 23, the number of the second bases 5 to 4 is 2, the upper portions of the second bases are connected with guide rails, the guide rails are connected with second moving plates 5 to 11 through sliders, one side of each second moving plate 5 to 11 is provided with a second air cylinder 5 to 12, cylinder bodies of the second air cylinders 5 to 12 are fixedly connected to the rack 1, the tail ends of air cylinder rods of the second air cylinders 5 to 12 are connected with the middle portions of the second moving plates 5 to 11, one side of the upper portions of the second moving plates 5 to 11 is connected with a second drilling machine, and the other side of the upper portions of the second moving plates 5 to 11 is connected with a pin pressing mechanism 5 to 7.
Referring to fig. 22, the first drilling machine includes a first drilling power head 5-2 and a first motor 5-3, the upper portion of the first moving plate 5-9 is fixedly connected to the first drilling power head 5-2, the first motor 5-3 is located above the first drilling power head 5-2, and the first motor 5-3 is configured to drive a drill bit of the first drilling power head 5-2 to rotate through a belt.
Referring to fig. 23, the second drilling machine includes a second drilling power head 5-5 and a second motor 5-6, one side of the upper portion of the second moving plate 5-11 is fixedly connected to the second drilling power head 5-5, the second motor 5-6 is located above the second drilling power head 5-5, and the second motor 5-6 is configured to drive a drill of the second drilling power head 5-5 to rotate through a belt.
Referring to fig. 23, the pin pressing mechanism 5-7 includes a second hydraulic cylinder 5-7-1, an L-type connecting plate 5-7-2 and a pin pressing head 5-7-3, wherein a cylinder body of the second hydraulic cylinder 5-7-1 is connected to an upper portion of the second moving plate 5-11 through a L-type connecting plate 5-7-2, a cylinder rod of the second hydraulic cylinder 5-7-1 is connected to the pin pressing head 5-7-3 through a nut, and the second hydraulic cylinder 5-7-1 is used for driving the pin pressing head 5-7-3 to perform pin pressing.
Referring to fig. 20, the drill center of the first drilling unit head 5-2 and the drill center of the second drilling unit head 5-5 of the present embodiment are on the same straight line, and the straight line passes through the center of the gimbal mounting base 3-2, but the first drilling unit head 5-2 is far from the gimbal mounting base 3-2, and it is necessary to use the first air cylinder 5-8 to push the first drilling machine to approach the center position of the gimbal on the gimbal mounting base 3-2, that is, to move along the X-axis direction. And the initial position of the second drilling power head 5-5 of the second drilling machine is close to the universal joint mounting seat 3-2, and the distance can meet the requirement that the second drilling power head 5-5 performs drilling operation on the universal joint and a transmission shaft inside the universal joint. At the moment, the first drilling machine and the second drilling machine simultaneously perform drilling operation on the universal joint mounting base 3-2 and the transmission shaft inside the universal joint mounting base, bidirectional drilling is achieved by the first drilling machine and the second drilling machine, drilling efficiency is high, deviation cannot be generated, and matching precision is high. The advantage of the first drilling head 5-2 of this embodiment being originally located further from the gimbal mount 3-2 is that it facilitates mounting of the gimbal on the gimbal mount 3-2. After the drilling is finished, the first air cylinder 5-8 drives the first drilling power head 5-2 to reset, the second air cylinder 5-12 drives the second moving plate 5-11 to move in the Y-axis direction, and the pin pressing head 5-7-3 of the pin pressing mechanism 5-7 on the second moving plate 5-11 is made to move to the position where the universal joint and the transmission shaft on the universal joint mounting seat 3-2 are drilled.
Referring to fig. 13 to 19, the pin feeding device 4 includes a vibration plate 4-1, a material guiding groove 4-2, a rodless cylinder 4-3, a movable positioning block 4-4, a scale 4-5 and a pin feeding moving mechanism 4-6, the vibration plate 4-1 is located at one side of the frame 1, an outlet of the vibration plate 4-1 is communicated with one end of the material guiding groove 4-2, referring to fig. 14, fixed baffles at two ends of the rodless cylinder 4-3 are connected to a third base 4-7, the third base 4-7 is connected to the frame 1, the rodless cylinder 4-3 is located at one side of the gimbal clamping device 3, the movable positioning block 4-4 is connected to a guide rod of the rodless cylinder 4-3, the scale 4-5 is arranged at one side of the rodless cylinder 4-3, the graduated scale 4-5 can be fixed on the side surfaces of the fixed baffles at the two ends of the rodless cylinder 4-3, the feeding moving mechanism 4-6 comprises a pin baffle 4-6-1, a pin carrying block 4-6-3 and a moving block 4-6-2, the upper surface of a moving slide block of the rodless cylinder 4-3 is connected with the moving block 4-6-2, one end of the moving block 4-6-2 is provided with a square groove, the pin carrying block 4-6-3 is positioned in the square groove, one side of the pin carrying block 4-6-3 is provided with the pin baffle 4-6-1, the bottom of the pin baffle 4-6-1 is fixedly connected on the rack 1, the other end of the guide groove 4-2 is communicated with the pin carrying block 4-6-3 at the initial position, referring to fig. 18, a scale indication arrow 4-4-2 is connected to a side surface of the movable positioning block 4-4, the scale indication arrow 4-4-2 points to a scale 4-5 on one side of the rodless cylinder 4-3, and a movable slider of the rodless cylinder 4-3 can slide on the guide rod, so that the movable slider pushes the pin bearing block 4-6-3 to a punching position on the universal joint of the universal joint clamping device 3 through the movable block 4-6-2.
In the embodiment, the upper part of the movable positioning block 4-4 is provided with the elastic nut 4-4-1, one side of the movable positioning block 4-4 is provided with a scale indication arrow 4-4-2, and the scale indication arrow 4-4-2 points to the scale 4-5 at one side of the rodless cylinder 4-3. Adjusting a tightening nut 4-4-1 on the upper part of the movable positioning block 4-4, fixing the movable positioning block 4-4 at a proper position by referring to a scale indication arrow 4-4-2 and a graduated scale according to the position of the pin, and tightening the tightening nut 4-4-1; the vibration disc 4-1 sends the pin to the upper part of the pin-carrying block 4-6-3 through the material guide groove 4-2, the pin-carrying block 4-6-3 moves to a proper position under the action of the moving block 4-6-2 and the rodless cylinder 4-3, and the pin is positioned to one side of the hole.
Referring to fig. 23, the pin pressing mechanism 5-7 comprises a second hydraulic cylinder 5-7-1, an L-type connecting plate 5-7-2 and a pin pressing head 5-7-3, when the pin is positioned at one side of the hole, the pin pressing head 5-7-3 is driven by the second hydraulic cylinder 5-7-1 to press the pin, so that the pin on the pin bearing block 4-6-3 is pressed into the universal joint and the transmission shaft hole, the pin pressing is completed, and all mechanisms are reset.
The universal joint and the transmission shaft are suitable for universal joints and transmission shafts of different models and sizes, when the size of the transmission shaft changes, only the lower pressure rod 2-4, the transmission shaft positioning block 2-5-2 and the transmission shaft clamping block 2-6-3 need to be replaced, and when the size of the universal joint changes, only the universal joint mounting seat 3-2 needs to be replaced.
The embodiment provides a punching and pin pressing method according to the semi-automatic pin pressing machine, and the punching and pin pressing method comprises the following steps:
(a) according to the types of the universal joint and the transmission shaft, a lower pressing rod 2-4, a transmission shaft positioning block 2-5-2 and a transmission shaft clamping block 2-6-3 which are matched with the transmission shaft are selected, and a universal joint mounting seat 3-2 which is matched with the universal joint is selected;
(b) a lower pressure rod 2-4 is arranged at the top of the front side wall of a lower pressure plate 2-3, a transmission shaft positioning block 2-5-2 is arranged on a positioning block mounting seat 2-5-1, a transmission shaft clamping block 2-6-3 is arranged on a clamping block mounting seat 2-6-2, and a universal joint mounting seat 3-2 is arranged on a universal joint base 3-1;
(c) the gimbal clamping device 3 acts: manually connecting a universal joint to be processed on a universal joint mounting seat 3-2 in a sleeved mode, moving a clamping head 3-3-4 in one fixed clamping mechanism 3-3 to one side of the universal joint under the driving action of a first hydraulic cylinder 3-3-2, enabling one side of the universal joint to lean against the clamping head 3-3-4, moving a clamping head 3-3-4 in the other fixed clamping mechanism 3-3 to the universal joint under the driving action of the first hydraulic cylinder 3-3-2, and enabling the two fixed clamping mechanisms 3-3 to act together to clamp the universal joint;
(d) the transmission shaft pressing device 2 acts: a transmission shaft to be processed is vertically placed in a positioning groove 2-5-3 of a transmission shaft positioning block 2-5-2 manually, the upper end of the transmission shaft is in contact with the bottom surface of a lower pressing rod 2-4, a clamping cylinder 2-6-1 drives a transmission shaft clamping block 2-6-3 to clamp the transmission shaft, a lower pressing hydraulic cylinder 2-7 drives the lower pressing plate 2-3 to move downwards, the transmission shaft moves downwards along with the lower pressing plate 2-3, the axes of the lower pressing rod 2-4, the transmission shaft and a universal joint are on the same straight line, the transmission shaft moves along with the lower pressing plate 2-3 to be pressed into the universal joint, the clamping cylinder 2-6-1 releases the transmission shaft, and a transmission shaft pressing device 2 stops acting and keeps a pressing state;
(e) the punching and pin pressing device 5 acts: the first air cylinder 5-8 drives a first drilling machine to move on the first base 5-1 towards the direction of the universal joint, after the first drilling machine and the second drilling machine move to a preset position, the first drilling machine and the second drilling machine work simultaneously to drill holes on the universal joint and the transmission shaft until the universal joint and the transmission shaft penetrate through the universal joint and the first air cylinder 5-8 is reset after the drilling is finished;
(f) the pin feeding device 4 acts: the vibration disc 4-1 vibrates to convey the pin to the pin carrying block 4-6-3 through the guide chute 4-2, and the rodless cylinder 4-3 drives the pin carrying block 4-6-3 to move to one side of the hole through the moving block 4-6-2; before the step, the axes of the pin and the hole are ensured to be on the same horizontal straight line by adjusting the movable positioning block 4-4;
(g) the punching and pin pressing device 5 acts: the second cylinder 5-12 drives the second moving plate 5-11 to move, the second moving plate 5-11 conveys the press pin head 5-7-3 of the press pin mechanism 5-7 to one side of the pin carrying block 4-6-3, the pins and the holes in the press pin head 5-7-3 and the pin carrying block 4-6-3 are ensured to be on the same horizontal line, the second cylinder 5-7-1 of the press pin mechanism 5-7 drives the press pin head 5-7-3 to move towards the direction of the hole, the pins in the pin carrying block 4-6-3 are pressed into the hole, the press pin is completed, a second hydraulic cylinder 5-7-1, a second air cylinder 5-12, a rodless air cylinder 4-3, a downward pressing hydraulic cylinder 2-7 and a first hydraulic cylinder 3-3-2 of the fixed clamping mechanism of the pin pressing mechanism 5-7 are reset; manually taking out the processed workpiece;
(h) and (d) repeatedly executing the steps (a) to (g), and punching and pin pressing are carried out on the rest universal joints and the transmission shaft.
The working control mode of all hydraulic cylinders and air cylinders of the embodiment adopts the prior art, and the working principle of the first drilling machine and the second drilling machine adopts the prior art. The first drilling machine, the second drilling machine, the vibration disc 4-1 and the like are connected with an external power supply, and power is supplied through the external power supply.
The embodiment provides a punching and pin pressing method for a universal joint transmission shaft, which integrates functions of pressing the transmission shaft, punching, pin pressing and the like and is used for independent work outside a line body. The punching and pin pressing method is simple and convenient in operation process, low in requirement on workers, high in automation degree, capable of improving working efficiency, capable of reducing labor cost and performing bidirectional punching on the transmission shaft and the universal joint simultaneously, high in punching and pin pressing precision, convenient to press pin, capable of improving connection quality between the transmission shaft and the universal joint, stronger in connection firmness and capable of prolonging service life of products.
The scope of the present invention includes, but is not limited to, the above embodiments, and the present invention is defined by the appended claims, and any alterations, modifications, and improvements that may occur to those skilled in the art are all within the scope of the present invention.
Claims (9)
1. A punching and pin pressing method for a semi-automatic pin pressing machine adopts the semi-automatic pin pressing machine, and is characterized in that the semi-automatic pin pressing machine comprises a rack (1), a transmission shaft pressing device (2), a universal joint clamping device (3), a pin conveying device (4) and a punching and pin pressing device (5), wherein the transmission shaft pressing device (2), the universal joint clamping device (3), the pin conveying device (4) and the punching and pin pressing device (5) are all fixed on the rack (1);
the transmission shaft pressing device (2) comprises a clamping pressing mechanism and a vertical rack (2-1), the clamping pressing mechanism comprises a pressing plate (2-3), a pressing rod (2-4), a positioning mechanism (2-5), a clamping mechanism (2-6) and a pressing hydraulic cylinder (2-7), the vertical rack (2-1) is fixedly connected to the rack (1), the top end of the vertical rack (2-1) is connected with the pressing hydraulic cylinder (2-7), the tail end of a hydraulic rod of the pressing hydraulic cylinder (2-7) is connected with a lifting guide block (2-3-1) on the rear side wall of the pressing plate (2-3), the rear side wall of the pressing plate (2-3) is connected with the front side wall of the vertical rack (2-1) in a sliding mode, the top of the front side wall of the pressing plate (2-3) is detachably connected with the pressing rod (2-4), the front side wall of the lower pressing plate (2-3) is connected with a positioning mechanism (2-5) and a clamping mechanism (2-6), and the positioning mechanism (2-5) and the clamping mechanism (2-6) are both positioned below the lower pressing rod (2-4); the positioning mechanism (2-5) comprises a positioning block mounting seat (2-5-1) and a transmission shaft positioning block (2-5-2), the positioning block mounting seat (2-5-1) is connected with the front side wall of the lower pressing plate (2-3), the transmission shaft positioning block (2-5-2) is detachably connected to the positioning block mounting seat (2-5-1), a positioning groove (2-5-3) matched with the shape of the outer wall of the transmission shaft is formed in the outer side surface of the transmission shaft positioning block (2-5-2), and a magnet used for attracting the transmission shaft is arranged in the transmission shaft positioning block (2-5-2); the clamping mechanism is positioned below the positioning mechanism (2-5), the clamping mechanism (2-6) comprises a clamping cylinder (2-6-1), 2 clamping block mounting seats (2-6-2) and 2 transmission shaft clamping blocks (2-6-3), the cylinder body of the clamping cylinder (2-6-1) is connected with the front side wall of the lower pressing plate (2-3), the two ends of the clamping cylinder (2-6-1) are connected with the clamping block mounting seats (2-6-2), and the transmission shaft clamping blocks (2-6-3) are placed on the clamping block mounting seats (2-6-2);
the universal joint clamping device (3) comprises a universal joint base (3-1), a universal joint mounting seat (3-2) and two fixed clamping mechanisms (3-3) arranged on two sides of a universal joint, the universal joint base (3-1) is fixedly connected to the rack (1), the universal joint mounting seat (3-2) is detachably inserted into the universal joint base (3-1), and the two fixed clamping mechanisms (3-3) are fixedly connected to the rack (1) and are arranged oppositely;
the punching and pin pressing device (5) comprises a first drilling machine, a second drilling machine, a first base (5-1), a second base (5-4), a first air cylinder (5-8), a second air cylinder (5-12) and a pin pressing mechanism (5-7), wherein the first base (5-1) and the second base (5-4) are respectively positioned on two sides of a universal joint base (3-1) of the universal joint clamping device (3) and are fixedly connected to a rack (1), an upper sliding block of the first base (5-1) is connected with the first drilling machine, the first air cylinder (5-8) is connected to the first base (5-1), and the first drilling machine is connected with the tail end of a piston rod of the first air cylinder (5-8); a second moving plate (5-11) is connected with an upper sliding block of the second base (5-4), a second air cylinder (5-12) is arranged on one side of the second moving plate (5-11), a cylinder body of the second air cylinder (5-12) is fixedly connected to the rack (1), the tail end of an air cylinder rod of the second air cylinder (5-12) is connected with the second moving plate (5-11), a second drilling machine is connected to one side of the upper portion of the second moving plate (5-11), and a pin pressing mechanism (5-7) is connected to the other side of the upper portion of the second moving plate (5-11);
the drill bit center of the first drilling machine, the drill bit center of the second drilling machine and the center of the universal joint mounting seat (3-2) are on the same straight line;
the pin conveying device (4) comprises a vibration disc (4-1), a guide chute (4-2), a rodless cylinder (4-3) and a pin conveying moving mechanism (4-6), the vibration disc (4-1) is positioned on one side of the rack (1), an outlet of the vibration disc (4-1) is communicated with one end of the guide chute (4-2), the rodless cylinder (4-3) is connected to the rack (1) through a third base (4-7), the rodless cylinder (4-3) is positioned on one side of the universal joint clamping device (3), the feeding moving mechanism (4-6) comprises a pin carrying block (4-6-3) and a moving block (4-6-2), the moving block (4-6-2) is connected to a moving block of the rodless cylinder (4-3), one end of the moving block (4-6-2) is provided with a square groove, the pin bearing block (4-6-3) is positioned in the square groove, and the other end of the guide groove (4-2) is communicated with the pin bearing block (4-6-3) at the initial position;
the punching and pin pressing method comprises the following steps:
(a) according to the types of the universal joint and the transmission shaft, a lower pressing rod (2-4), a transmission shaft positioning block (2-5-2) and a transmission shaft clamping block (2-6-3) which are matched with the transmission shaft are selected, and a universal joint mounting seat (3-2) which is matched with the universal joint is selected;
(b) a lower pressure rod (2-4) is arranged at the top of the front side wall of a lower pressure plate (2-3), a transmission shaft positioning block (2-5-2) is arranged on a positioning block mounting seat (2-5-1), a transmission shaft clamping block (2-6-3) is arranged on a clamping block mounting seat (2-6-2), and a universal joint mounting seat (3-2) is arranged on a universal joint base (3-1);
(c) the universal joint clamping device (3) acts: manually sleeving a universal joint to be machined on a universal joint mounting seat (3-2), moving a clamping head (3-3-4) in one fixed clamping mechanism (3-3) to one side of the universal joint under the driving action of a first hydraulic cylinder (3-3-2), leaning one side of the universal joint on the clamping head (3-3-4), moving a clamping head (3-3-4) in the other fixed clamping mechanism (3-3) to the universal joint under the driving action of the first hydraulic cylinder (3-3-2), and clamping the universal joint under the combined action of the two fixed clamping mechanisms (3-3);
(d) the transmission shaft pressing device (2) acts: a transmission shaft to be processed is vertically placed in a positioning groove (2-5-3) of a transmission shaft positioning block (2-5-2) manually, the upper end of the transmission shaft is contacted with the bottom surface of a lower pressing rod (2-4), a clamping cylinder (2-6-1) drives a transmission shaft clamping block (2-6-3) to clamp the transmission shaft, a lower pressing hydraulic cylinder (2-7) drives the lower pressing plate (2-3) to move downwards, the transmission shaft moves downwards along with the lower pressing plate (2-3), the axes of the lower pressing rod (2-4), the transmission shaft and a universal joint are on the same straight line, the transmission shaft moves along with the lower pressing plate (2-3) to be pressed into the universal joint, the clamping cylinder (2-6-1) loosens the transmission shaft, and a transmission shaft pressing device (2) stops acting, keeping a pressing state;
(e) the punching and pin pressing device (5) acts: the first air cylinder (5-8) drives the first drilling machine to move towards the direction of the universal joint on the first base (5-1), after the first drilling machine and the second drilling machine move to the preset position, the first drilling machine and the second drilling machine work simultaneously to drill the universal joint and the transmission shaft until the universal joint and the transmission shaft penetrate through the universal joint, and the first air cylinder (5-8) resets after drilling is finished;
(f) the pin feeding device (4) acts: the vibration disc (4-1) vibrates to convey the pin to the pin carrying block (4-6-3) through the guide chute (4-2), and the rodless cylinder (4-3) drives the pin carrying block (4-6-3) to move to one side of the hole through the moving block (4-6-2);
(g) the punching and pin pressing device (5) acts: the second air cylinder (5-12) drives the second moving plate (5-11) to move, the second moving plate (5-11) conveys a press pin head (5-7-3) of the press pin mechanism (5-7) to one side of the pin carrying block (4-6-3), pins and holes in the press pin head (5-7-3) and the pin carrying block (4-6-3) are ensured to be on the same horizontal line, the second hydraulic cylinder (5-7-1) of the press pin mechanism (5-7) drives the press pin head (5-7-3) to move towards the direction of the holes, the pins in the pin carrying block (4-6-3) are pressed into the holes, the press pin is completed, and the second hydraulic cylinder (5-7-1) of the press pin mechanism (5-7), the second air cylinder (5-12), the rodless air cylinder (4-3) are arranged on the same horizontal line as the pins and the holes in the same horizontal line, The pressing hydraulic cylinder (2-7) and the first hydraulic cylinder (3-3-2) of the fixed clamping mechanism are reset.
2. The punching and pin-pressing method for the semi-automatic pin press according to claim 1, characterized in that the rear side wall of the lower press plate (2-3) is slidably connected with the front side wall of the vertical frame (2-1) through a guide rail (2-9) and a slide block (2-8), and a lower press rod (2-4) is in threaded connection with a connecting plate (2-3-2) at the top of the front side wall of the lower press plate (2-3).
3. The punching and pin-pressing method for the semi-automatic pin press according to claim 2, wherein the number of the positioning mechanisms (2-5) is 2, the number of the clamping mechanisms (2-6) is 2, and one positioning mechanism (2-5), one clamping mechanism (2-6), the other positioning mechanism (2-5) and the other clamping mechanism (2-6) are connected with the lower pressing plate (2-3) sequentially from top to bottom through screws; and the clamping surface of the transmission shaft clamping block (2-6-3) of the clamping mechanism (2-6) is provided with a clamping groove matched with the shape of the outer wall of the transmission shaft.
4. The punching and pin pressing method for the semi-automatic pin pressing machine according to claim 3, wherein the transmission shaft pressing device (2) further comprises a limiting structure (2-2), the limiting structure (2-2) comprises a limiting rod mounting seat (2-2-3), a limiting rod (2-2-2) and a backing plate (2-2-1), the limiting rod mounting seat (2-2-3) is fixedly connected to the vertical rack (2-1) through a bolt, the bottom of the limiting rod (2-2-2) is in threaded connection with a thread groove of the limiting rod mounting seat (2-2-3), the backing plate (2-2-1) is fixedly connected to the top of the limiting rod (2-2-2), and the limiting structure (2-2) is located right below the pressing plate (2-3) and used for limiting pressing down Downward movement stroke of the plate (2-3).
5. The punching and pin-pressing method for the semi-automatic pin press according to claim 1, wherein the fixed clamping mechanism (3-3) comprises a hydraulic cylinder mounting seat (3-3-1), a first hydraulic cylinder (3-3-2), a clamping head (3-3-4), a movable piston rod (3-3-5), a sleeve (3-3-3) and a sleeve base (3-3-10), the hydraulic cylinder mounting seat (3-3-1) and the sleeve base (3-3-10) are both fixedly connected to the frame (1) and located on the same horizontal line, the first hydraulic cylinder (3-3-2) is fixedly connected to the hydraulic cylinder mounting seat (3-3-1), the sleeve (3-3-3) is fixedly connected to the sleeve base (3-3-10), the sleeve (3-3-3) is sleeved outside the movable piston rod (3-3-5), the movable piston rod (3-3-5) can slide in the sleeve (3-3-3), the tail end of the piston rod of the first hydraulic cylinder (3-3-2) is connected with one end of the movable piston rod (3-3-5), and the other end of the movable piston rod (3-3-5) is connected with a clamping head (3-3-4) used for clamping a universal joint.
6. The punching and pin-pressing method for the semi-automatic pin press according to claim 5, characterized in that the upper part of the movable piston rod (3-3-5) is provided with a strip-shaped oil guide groove (3-3-6), the lower part is provided with a strip-shaped guide block (3-3-7), the inner lower surface of the sleeve (3-3-3) is provided with a strip-shaped guide groove (3-3-9), the movable piston rod (3-3-5) penetrates through the inner part of the sleeve (3-3-3) and the movable piston rod (3-3-5) is in clearance fit with the sleeve (3-3-3), the strip-shaped guide block (3-3-7) of the movable piston rod (3-3-5) is embedded in the strip-shaped guide groove (3-3-9) and can slide in the strip-shaped guide groove (3-3-9), the upper part of the sleeve (3-3-3) is provided with an openable oil injection nozzle (3-3-8), and the oil injection nozzle (3-3-8) is positioned right above the strip-shaped oil guide groove (3-3-6).
7. The punching and pin pressing method for the semi-automatic pin pressing machine according to claim 1, characterized in that two guide rails are connected to one side of the upper portion of the first base (5-1), a first moving plate (5-9) is connected to the upper portion of the guide rails through a sliding block, a first air cylinder (5-8) is connected to the other side of the upper portion of the first base (5-1), the first moving plate (5-9) is connected with the tail end of a piston rod of the first air cylinder (5-8) through a fixing block (5-10), and a first drilling machine is connected to the upper portion of the first moving plate (5-9); the number of the second bases (5-4) is 2, the upper parts of the second bases are connected with guide rails, and the guide rails are connected with second moving plates (5-11) through sliding blocks.
8. The punching and pin-pressing method for the semi-automatic pin press according to claim 7, wherein the pin press mechanism (5-7) comprises a second hydraulic cylinder (5-7-1), a L type connecting plate (5-7-2) and a pin press head (5-7-3), the cylinder body of the second hydraulic cylinder (5-7-1) is connected with the upper portion of the second moving plate (5-11) through a L type connecting plate (5-7-2), the cylinder rod of the second hydraulic cylinder (5-7-1) is connected with the pin press head (5-7-3), and the second hydraulic cylinder (5-7-1) is used for driving the pin press head (5-7-3) to perform pin press.
9. The punching and pin-pressing method for the semi-automatic pin press according to claim 1, wherein the pin feeding device (4) further comprises a movable positioning block (4-4) and a scale (4-5), the movable positioning block (4-4) is connected to a guide rod of the rodless cylinder (4-3), the scale (4-5) is arranged on one side of the rodless cylinder (4-3), a scale indication arrow (4-4-2) is connected to the side surface of the movable positioning block (4-4), and the scale indication arrow (4-4-2) points to the scale (4-5) on one side of the rodless cylinder (4-3); the feeding moving mechanism (4-6) further comprises a pin baffle (4-6-1), the pin baffle (4-6-1) is located on one side of the pin carrying block (4-6-3), and the bottom of the pin baffle (4-6-1) is fixedly connected to the rack (1).
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| CN113001181B (en) * | 2021-02-27 | 2022-05-31 | 山东凯帝斯工业***有限公司 | Device and method for centering, punching and pin pressing of torsion bar of input shaft of automobile steering gear |
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Application publication date: 20190405 Assignee: NANJING FINE TECHNOLOGY Co.,Ltd. Assignor: NANJING FORESTRY University Contract record no.: X2020320000077 Denomination of invention: A method of punching and pressing pin for semi-automatic pin pressing machine Granted publication date: 20200731 License type: Common License Record date: 20200925 Application publication date: 20190405 Assignee: Nanjing Baier Technology Development Co.,Ltd. Assignor: NANJING FORESTRY University Contract record no.: X2020320000078 Denomination of invention: A method of punching and pressing pin for semi-automatic pin pressing machine Granted publication date: 20200731 License type: Common License Record date: 20200925 |
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Effective date of registration: 20210827 Address after: 225300 No. 15, Kechuang Road, pharmaceutical high tech Zone, Taizhou City, Jiangsu Province Patentee after: JIANGSU YIWEN AGROFORESTRY MACHINERY TECHNOLOGY Co.,Ltd. Address before: Nanjing City, Jiangsu province 210037 Longpan Road No. 159 Patentee before: NANJING FORESTRY University |
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