CN112809394B

CN112809394B - Automatic jacket processing equipment for special-shaped shaft sleeve

Info

Publication number: CN112809394B
Application number: CN202110364059.9A
Authority: CN
Inventors: 祁永幸
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-04-03
Filing date: 2021-04-03
Publication date: 2023-09-08
Anticipated expiration: 2041-04-03
Also published as: CN112809394A

Abstract

The invention relates to the field of automatic processing equipment, in particular to automatic processing equipment for jackets of special-shaped shaft sleeves, which comprises a workbench, a positioning device, a punching device and a slotting device, wherein the positioning device is used for positioning the workbench; the workbench is arranged on the frame, the positioning devices are symmetrically arranged on the left side and the right side of the workbench surface, the working directions of the working ends of the positioning devices are horizontally arranged towards the central position of the workbench, the punching devices are symmetrically arranged on the front side and the rear side of the workbench surface, the working directions of the working ends of the punching devices are arranged towards the central position of the workbench, the grooving devices are erected right above the workbench, and the working end directions of the grooving devices are vertically downwards arranged; this scheme adopts automatic processing technique to have saved the human cost, very big improvement production efficiency, and the through-hole of oval shape has been seted up to the workstation centre, and convenient processing and the piece discharge that produces, the clamp plate on the V type clamping jaw can firmly fix the axle overcoat original paper that needs processing prevent that it from beating.

Description

Automatic jacket processing equipment for special-shaped shaft sleeve

Technical Field

The invention relates to the field of automatic processing equipment, in particular to automatic processing equipment for jackets of special-shaped shaft sleeves.

Background

The cross section of the composite material sliding bearing such as SF series oil-free lubrication bearing, FB bronze bearing and JF bimetallic bearing and the like which are commonly used in the market at present is mostly provided with an open circular shaft sleeve, in order to prevent relative rotation between the sliding bearing and a bearing seat hole, an interference fit mode is generally adopted, the manufacturing precision of the outer diameter of the sliding bearing and the bearing seat hole is improved, and when the sliding bearing is installed, the sliding bearing needs to be pressed into the bearing seat hole by using larger axial pressure, the requirement of the pressing force is high, and particularly, the sliding bearing with larger diameter and wall thickness has larger difficulty in product processing, forming, installation and use. If the bearing seat hole is ground to be large once the sliding bearing and the bearing seat hole relatively rotate, the sliding bearing with the original standard specification cannot be replaced and repaired, and the sliding bearing with the enlarged outer diameter is required to be repaired by a non-standard sliding bearing, so that the repairing is very troublesome. In addition, in order to check the size of the sliding bearing in use after being pressed into the bearing seat hole, it is necessary to press the check member into the bearing seat hole and then detect the check member, which causes loss and waste of the check member. The main defects are as follows: firstly, the workload and the difficulty increase caused by large pressing force are met intentionally; secondly, the hardness requirement on the raw material of the sliding bearing is higher; thirdly, the inner diameter and the outer diameter of the product are extremely easy to be damaged by pulling, so that the abrasion and damage of the die are accelerated; fourthly, loss in the processing and control processes is increased; and fifthly, the strength requirements on workers and equipment are also increased.

Chinese patent CN201420248406.7 discloses a special-shaped shaft sleeve, which comprises a concentric arc with the same radius opening made of antifriction material, a shaft sleeve body composed of small arc is connected on the outer edge of the concentric arc opening, a jacket is sleeved outside the shaft sleeve body and is in transition fit or moving fit with the shaft sleeve body, and the outer surface of the jacket is cylindrical. The invention can be easily installed when the shaft sleeve body is installed in the outer sleeve in production or maintenance, in addition, the concentric circular arcs of the opening can be opened or closed according to the size of the inner hole of the outer sleeve, so that the matching relation between the outer diameter of the concentric circular arcs and the outer sleeve can be adjusted, and the shaft sleeve body can be smoothly installed in the outer sleeve. Because of the existence of the small circular arc, the shaft sleeve body and the outer sleeve cannot rotate relatively. The product can be widely applied to mechanical products such as various hardware machines, automobile accessory industries, mold guide sleeves, engineering machines, injection molding machines and the like.

But at present, corresponding automatic processing equipment is lacked, the production efficiency is low, and the labor cost is high.

Disclosure of Invention

In order to solve the technical problem, the technical scheme provides the automatic jacket processing equipment for the special-shaped shaft sleeve, the problem is solved, the labor cost is saved by adopting an automatic processing technology, the production efficiency is greatly improved, a through hole in a oval shape is formed in the center of a workbench, the processing and the chip discharging are facilitated, and a pressing plate on a V-shaped clamping jaw can firmly fix a shaft jacket original piece to be processed to prevent the shaft jacket original piece from jumping.

In order to achieve the above purpose, the invention adopts the following technical scheme:

the automatic processing equipment for the outer sleeve of the special-shaped shaft sleeve is used for processing a straight hole penetrating through two sides of the shaft sleeve in the radial direction and a pair of through grooves penetrating through two ends of the shaft sleeve symmetrically in the middle of the shaft sleeve, and is characterized by comprising a workbench, a positioning device, a punching device and a grooving device; the workstation is installed in the frame, and the setting of positioner symmetry is in the left and right sides of workstation mesa, and the direction of operation of positioner's work end sets up towards the central point of workstation horizontally, and perforating device symmetry sets up in the front and back both sides of workstation mesa, and perforating device's work end's direction of operation sets up towards the central point of workstation, and fluting device erects directly over the workstation, and fluting device's work end direction is vertical to set up downwards.

Preferably, the workbench surface is provided with a through hole, the through hole is positioned at the center of the workbench surface, the through hole is in a oval shape, and the shape and the size of the through hole are matched with the internal cross section shape of the shaft sleeve original piece to be processed.

Preferably, the positioning device comprises a mounting plate, a long shaft cylinder, a V-shaped clamping jaw, a pressing plate and a guide rod; the mounting panel is equipped with a pair of and symmetrically sets up in the both sides of workstation, the major axis cylinder is equipped with a pair of and installs respectively on a pair of mounting panel, a pair of major axis cylinder axis collineation but the direction of operation is opposite, the direction of operation of major axis cylinder is the central point of orientation workstation, V type clamping jaw is equipped with a pair of and installs on the output shaft of major axis cylinder symmetrically, the opening of V type clamping jaw is the central point of orientation workstation, the clamp plate is equipped with two pairs and installs the front end position in a pair of V type clamping jaw both sides respectively symmetrically, the bottom of clamp plate can the butt in the upper end of axle overcoat original paper under the operational state, first guide bar is equipped with two pairs, respectively on installing in the position that V type clamping jaw is close to the mounting panel, first guide bar and mounting panel are along horizontal direction clearance fit and axis parallel to major axis cylinder.

Preferably, the punching device comprises a first punching machine and a bidirectional screw rod sliding table; the bidirectional screw rod sliding table is arranged at the bottom of the workbench, the bidirectional screw rod sliding table is symmetrically arranged relative to the workbench, the driving direction of the bidirectional screw rod sliding table is horizontally arranged, a pair of working ends which move radially relative to the central section are arranged on the bidirectional screw rod sliding table, the first punching machine is provided with a pair of working ends which are respectively arranged on the bidirectional screw rod sliding table, and the working ends of the first punching machine extend out from the upper end of the workbench and are collinearly pointed to the central position of the workbench.

Preferably, the slotting device comprises a portal frame, a rodless cylinder, a lifting mechanism and a second puncher; the portal frame is installed in the frame, and the working direction level setting of rodless cylinder is installed in the bottom of portal frame and is located the top of workstation, and elevating system installs on the working end of rodless cylinder, and elevating system's drive direction is vertical to be set up, and the second puncher is installed on elevating system's working end, and the working direction of second puncher is vertical to point to the workstation downwards, and the structure of the working end of second puncher agrees with the required through-hole groove shape of seting up of axle overcoat.

Preferably, the lifting mechanism comprises a fixed plate, a screw rod, a second guide rod, a servo motor and a sliding table; the fixed plate is installed on the working end of rodless cylinder, the axis of lead screw is vertical to be set up, the both ends of lead screw rotate with the upper and lower both ends of fixed plate respectively to be connected, the second guide bar is equipped with a pair of and sets up about the lead screw symmetry, the axis of second guide bar is on a parallel with the lead screw, the both ends of second guide bar respectively with the upper and lower both ends fixed connection of fixed plate, servo motor installs on the fixed plate, servo motor's output shaft and the tip fixed connection and the axis collineation of lead screw, slip table and lead screw threaded connection, slip table and second guide bar clearance fit, slip table and second puncher fixed connection.

Compared with the prior art, the invention has the following beneficial effects:

1. the invention adopts an automatic processing technology, saves labor cost and greatly improves production efficiency. A concrete worker places an original shaft sleeve to be processed on the table surface of the workbench, and the positioning device can fix the original shaft sleeve to the center of the table surface of the workbench; the working end of the punching device is used for carrying out penetrating punching on the fixed shaft sleeve original piece so as to form a straight hole; the grooving device has the advantages that the working end of the grooving device is vertical, the grooving is carried out on the inside of the original sleeve of the shaft sleeve, so that a through groove is formed, after the grooving is finished, a worker takes out the machined shaft sleeve, and the original sleeve of the shaft sleeve to be machined is put in the original sleeve of the shaft sleeve again, so that the work can be restarted.

2. A through hole in a waist shape is formed in the center of the workbench, so that processing is facilitated, and generated scraps are discharged. The size of the through hole formed in the center of the table top of the specific workbench is matched with the shape of the section inside the original sleeve to be processed, so that the original sleeve is convenient to process, and meanwhile, the damage to the table top caused by the grooving device is avoided, and the workbench is protected.

The pressing plate on the V-shaped clamping jaw can firmly fix the shaft sleeve original piece to be processed to prevent the shaft sleeve original piece from jumping. The two pairs of specific pressing plates are respectively arranged at the front end positions of the pair of V-shaped clamping jaws, and in the working state, the two pairs of pressing plates can firmly press the machined shaft sleeve original, so that the possibility of upward jumping of the shaft sleeve original is avoided.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a side view of the present invention;

FIG. 4 is a perspective view of the punching device of the present invention;

FIG. 5 is a perspective view of a table of the present invention;

FIG. 6 is a perspective view of a positioning device according to the present invention;

FIG. 7 is a perspective view of a lifting structure according to the present invention

FIG. 8 is a perspective view of a slotting device of the present invention;

fig. 9 is a schematic perspective view of the shaft sleeve of the present invention before and after machining.

The reference numerals in the figures are:

1-a workbench; 1 a-a through hole;

2-positioning means; 2 a-a mounting plate; 2 b-a long axis cylinder; 2c-V type jaws; 2 d-pressing plate; 2 e-a first guide bar;

3-perforating device; 3 a-a first puncher; 3 b-a bidirectional screw rod sliding table;

4-grooving device; 4 a-a portal frame; 4 b-rodless cylinder; 4 c-a lifting mechanism; 4c 1-a fixing plate; 4c 2-screw rod; 4c 3-a second guide bar; 4c 4-servo motor; 4c 5-slipway; 4 d-a second puncher;

5-shaft jacket; 5 a-straight holes; 5 b-through slot.

Detailed Description

The following description is presented to enable one of ordinary skill in the art to make and use the invention. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art.

As shown in fig. 1-3, an automatic processing device for a special-shaped shaft sleeve is used for processing a straight hole 5a penetrating through two sides of a shaft sleeve 5 in the radial direction and a pair of through grooves 5b penetrating through two ends of the shaft sleeve symmetrically in the middle of the shaft sleeve, and comprises a workbench 1, a positioning device 2, a punching device 3 and a grooving device 4; the workstation is installed in the frame, and the setting of positioner symmetry is in the left and right sides of workstation mesa, and the direction of operation of positioner's work end sets up towards the central point of workstation horizontally, and perforating device symmetry sets up in the front and back both sides of workstation mesa, and perforating device's work end's direction of operation sets up towards the central point of workstation, and fluting device erects directly over the workstation, and fluting device's work end direction is vertical to set up downwards.

The positioning device 2, the punching and bundling device 3 and the slotting device 4 are electrically connected with the controller. When a worker places an original shaft sleeve to be processed in the center of a table surface of a workbench, firstly, a controller sends a working signal to a positioning device 2, and after the positioning device 2 receives the signal, a working end can fixedly clamp the original shaft sleeve; then the controller sends the working signal to the punching device 3 again, and after the punching device 3 receives the signal, the working end can radially penetrate the shaft sleeve to punch the shaft sleeve, so that a straight hole 5a is formed. After punching, the controller controls the punching device 3 to reset; and finally, the controller sends a working signal to the slotting device 4, the working end of the slotting device 4 vertically and downwards performs slotting after receiving the signal, so that a through slot 5b is formed, and the controller controls the slotting device 4 to reset after slotting is completed. The processing of the straight hole 5a and the through groove 5b on the shaft housing 5 is completed, and the worker can take the shaft housing 5 after the processing off the table 1.

As shown in fig. 5, the table top is provided with a through hole 1a, the through hole 1a is located at the center of the table top, the through hole 1a is in a oval shape, and the shape and size of the through hole 1a are the internal cross-sectional shape of the shaft sleeve original fitting to be processed.

The through hole 1a on the workbench surface is matched with the internal cross section of the shaft sleeve original to be processed, so that the shaft sleeve original is convenient to process and the generated scraps are convenient to discharge. And the arrangement of the through hole 1a can effectively avoid the damage of the workbench 1 when the slotting device 4 processes the shaft sleeve 5, thereby protecting the workbench 1.

As shown in fig. 2, the positioning device comprises a mounting plate 2a, a long shaft cylinder 2b, a V-shaped clamping jaw 2c, a pressing plate 2d and a guide rod 2e; the mounting plate 2a is provided with a pair of symmetrically arranged on two sides of the workbench 1, the long shaft air cylinders 2b are provided with a pair of symmetrically arranged on the pair of mounting plates 2a, the axes of the pair of long shaft air cylinders 2b are collinear, but the working directions are opposite, the working directions of the long shaft air cylinders 2b horizontally face the central position of the workbench, the V-shaped clamping jaws 2c are provided with a pair of symmetrically arranged on the output shaft of the long shaft air cylinders 2b, the opening of the V-shaped clamping jaws 2c face the central position of the workbench, the pressing plate 2b is provided with two pairs of symmetrically arranged on the front end positions of the two sides of the pair of V-shaped clamping jaws 2a, the bottom of the pressing plate 2c is abutted against the upper end of the shaft sleeve original under the working state, the first guide rods 2e are provided with two pairs of horizontally clearance fit with the mounting plates 2a, and the axes of the first guide rods are parallel to the long shaft air cylinders 2b.

The staff puts into the axle overcoat original paper of waiting to process, and clamp plate 2 d's bottom can butt at the upper end of axle overcoat original paper and compress tightly it, and the fixed is carried out to axle overcoat original paper both sides to the promotion V type clamping jaw 2c of controller control major axis cylinder 2b. The first guide bar 2e is provided to prevent deflection about the axis of the long axis cylinder 2b during movement of the V-clamp jaw 2 c.

As shown in fig. 4, the punching device comprises a first punching machine 3a and a bidirectional screw rod sliding table 3b; the bidirectional screw sliding table 3b is installed at the bottom of the workbench 1, the bidirectional screw sliding table 3b is symmetrically arranged relative to the workbench 1, the driving direction of the bidirectional screw sliding table 3b is horizontally arranged, a pair of working ends which move radially relative to the central section are arranged on the bidirectional screw sliding table 3b, the first punching machine 3a is provided with a pair of working ends which are respectively arranged on the bidirectional screw sliding table 3b, and the working ends of the first punching machine 3a extend out from the upper end of the workbench 1 and are collinearly pointed to the central position of the workbench 1.

The bidirectional screw rod sliding table 3b is electrically connected with the controller. The controller sends a signal to the bidirectional screw sliding table 3b, and after receiving the signal, working ends on two sides of the bidirectional screw sliding table 3b are close to the central position and drive the first puncher 3a to punch the shaft sleeve original, so that a straight hole 5a is formed. After completion, the controller controls the working end of the bidirectional screw sliding table 3b and the first puncher 3a to reset.

As shown in fig. 1, 7 and 8, the grooving apparatus includes a gantry 4a, a rodless cylinder 4b, a lifting mechanism 4c and a second puncher 4d; the portal frame 4a is installed in the frame, and rodless cylinder 4b installs in the bottom of portal frame 4a and is located the top of workstation 1, and rodless cylinder 4 b's direction of operation level sets up, and elevating system 4c installs on rodless cylinder's the work end, and elevating system 4 c's drive direction is vertical to be set up, and second puncher 4d installs on elevating system 4's the work end, and the direction of operation of second puncher 4d is vertical to be directed downwards to the workstation, and the structure of second puncher 4 d's the work end and the required through groove 5b shape that offers of axle overcoat 5 agree with.

The rodless cylinder 4b and the lifting mechanism 4c are electrically connected with a uniform controller. The controller sends a signal to the lifting mechanism 4c, and the lifting mechanism 4c receives the signal and then controls the second puncher 4d to vertically descend; the controller sends a signal to the second puncher 4d, the second puncher 4d starts working after receiving the signal, and the through groove 5b is machined on the shaft sleeve original piece by matching with the lifting action of the lifting mechanism 4 c. After the first through slot 5b on the shaft sleeve element is machined, the controller sends a signal to the rodless cylinder 4b, the rodless cylinder 4b receives the signal and then controls the lifting mechanism 4c and the second puncher 4d to synchronously and horizontally move to the other side of the shaft sleeve element, and meanwhile the second puncher 4d machines the second through slot 5b on the other side of the shaft sleeve element. After the processing is completed, the controller controls the rodless cylinder 4b, the lifting mechanism 4c and the second punch 4d to reset.

As shown in fig. 8, the lifting mechanism comprises a fixed plate 4c1, a screw rod 4c2, a second guide rod 4c3, a servo motor 4c4 and a sliding table 4c5; the fixed plate 4c1 is installed on the working end of the rodless cylinder 4b, the axis of the screw rod 4c2 is vertically arranged, two ends of the screw rod 4c2 are respectively connected with the upper end and the lower end of the fixed plate 4c1 in a rotating mode, the second guide rods 4c3 are arranged in a pair and are symmetrically arranged relative to the screw rod 4c2, the axis of the second guide rods 4c3 is parallel to the screw rod 4c2, two ends of the second guide rods 4c3 are respectively fixedly connected with the upper end and the lower end of the fixed plate 4c1, the servo motor 4c4 is installed on the fixed plate 4c1, an output shaft of the servo motor 4c4 is fixedly connected with the end of the screw rod 4c2, the axes of the output shaft of the servo motor 4c4 and the screw rod 4c2 are collinear, the sliding table 4c5 is in threaded connection with the screw rod 4c2, the sliding table 4c5 is in clearance fit with the second guide rods 4c3, and the sliding table 4c5 is fixedly connected with the second puncher 4 d.

The servo motor 4c4 is electrically connected to the controller. The controller sends a signal to the servo motor 4c4, and the servo motor 4c4 receives the signal and then controls the screw rod 4c2 to rotate. The screw rod 4c2 converts circumferential rotary motion into axial linear driving force, and the sliding table 4c5 is driven to lift along the axis direction of the screw rod 4c2 by matching with the limiting effect of the second guide rod 4b3 on the sliding table 4c5, so that the second puncher 4d is driven to lift.

The working principle of the invention is as follows:

the device realizes the functions of the invention through the following steps, thereby solving the technical problems of the invention:

step one: the staff places the axle overcoat original paper that waits to process at workstation mesa central authorities.

Step two: the controller sends a working signal to the positioning device 2, and the working end of the positioning device 2 can be fixedly clamped with the shaft sleeve original piece after receiving the signal, so that the shaft sleeve original piece is fixed at the right central position of the table surface of the workbench.

Step three: the controller sends a working signal to the punching device 3, the working end can radially penetrate and punch the shaft sleeve original after the punching device 3 receives the signal, a straight hole 5a is formed in the shaft sleeve original, and the controller controls the punching device 3 to reset after the hole is punched.

Step four: the controller sends a working signal to the slotting device 4, the slotting device 4 receives the signal, and the working end vertically and downwards slots the shaft sleeve original, so that a through slot 5b is formed, and the slotting device 4 is controlled by the controller to reset after slotting is completed.

The foregoing has outlined the basic principles, features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The automatic processing equipment for the outer sleeve of the special-shaped shaft sleeve is used for processing a straight hole (5 a) penetrating through two sides of the shaft sleeve (5) in the radial direction and a pair of through grooves (5 b) penetrating through two ends of the shaft sleeve symmetrically in the middle of the shaft sleeve, and is characterized by comprising a workbench (1), a positioning device (2), a punching device (3) and a grooving device (4); the workbench is arranged on the frame, the positioning devices are symmetrically arranged on the left side and the right side of the workbench surface, the working direction of the working end of each positioning device is horizontally arranged towards the central position of the workbench, the punching devices are symmetrically arranged on the front side and the rear side of the workbench surface, the working direction of the working end of each punching device is arranged towards the central position of the workbench, the slotting device is erected right above the workbench, the working end direction of each slotting device is vertically downwards arranged,

the workbench surface is provided with a through hole (1 a), the through hole (1 a) is positioned at the right central position of the workbench surface, the through hole (1 a) is in a oval shape, the shape and the size of the through hole (1 a) are matched with the internal cross section shape of the shaft sleeve original piece to be processed,

the positioning device comprises a mounting plate (2 a), a long shaft cylinder (2 b), a V-shaped clamping jaw (2 c), a pressing plate (2 d) and a first guide rod (2 e); the mounting plates (2 a) are provided with a pair of symmetrically arranged on two sides of the workbench (1), the long shaft cylinders (2 b) are provided with a pair of symmetrically arranged on the pair of mounting plates (2 a), the axes of the pair of long shaft cylinders (2 b) are collinear and opposite in working direction, the working direction of the long shaft cylinders (2 b) horizontally faces the central position of the workbench, the V-shaped clamping jaws (2 c) are provided with a pair of symmetrically arranged on the output shaft of the long shaft cylinders (2 b), the opening of the V-shaped clamping jaws (2 c) faces the central position of the workbench, the pressing plate (2 d) is provided with two pairs of symmetrically arranged on the front end positions on two sides of the pair of V-shaped clamping jaws (2 c), the bottom of the pressing plate (2 d) is abutted against the upper end of the shaft sleeve in the working state, the first guide rods (2 e) are provided with two pairs of horizontally clearance fit with the mounting plates (2 a) respectively arranged on the positions of the V-shaped clamping jaws (2 c) close to the mounting plates (2 a) and the axes of the V-shaped clamping jaws are parallel to the long shaft cylinders (2 b),

the punching device comprises a first punching machine (3 a) and a bidirectional screw rod sliding table (3 b); the bidirectional screw rod sliding table (3 b) is arranged at the bottom of the workbench (1), the bidirectional screw rod sliding table (3 b) is symmetrically arranged about the workbench (1), the driving direction of the bidirectional screw rod sliding table (3 b) is in the horizontal direction, a pair of working ends which radially move about the central section are arranged on the bidirectional screw rod sliding table (3 b), a pair of first hole openers (3 a) are arranged on the pair of working ends of the bidirectional screw rod sliding table (3 b) respectively, the working ends of the first hole openers (3 a) extend out from the upper end of the workbench (1) and are collinearly pointed to the central position of the workbench (1),

the grooving device comprises a portal frame (4 a), a rodless cylinder (4 b), a lifting mechanism (4 c) and a second puncher (4 d); the portal frame (4 a) is arranged on the frame, the rodless cylinder (4 b) is arranged at the bottom end of the portal frame (4 a) and is positioned above the workbench (1), the working direction of the rodless cylinder (4 b) is horizontally arranged, the lifting mechanism (4 c) is arranged at the working end of the rodless cylinder, the driving direction of the lifting mechanism (4 c) is vertically arranged, the second puncher (4 d) is arranged at the working end of the slotting device (4), the working direction of the second puncher (4 d) vertically points to the workbench downwards, the structure of the working end of the second puncher (4 d) is matched with the shape of the through groove (5 b) required to be formed by the shaft sleeve (5),

the lifting mechanism comprises a fixed plate (4 c 1), a screw rod (4 c 2), a second guide rod (4 c 3), a servo motor (4 c 4) and a sliding table (4 c 5); the fixed plate (4 c 1) is arranged on the working end of the rodless cylinder (4 b), the axis of the screw rod (4 c 2) is vertically arranged, the two ends of the screw rod (4 c 2) are respectively and rotatably connected with the upper end and the lower end of the fixed plate (4 c 1), the second guide rod (4 c 3) is provided with a pair of guide rods and symmetrically arranged relative to the screw rod (4 c 2), the axis of the second guide rod (4 c 3) is parallel to the screw rod (4 c 2), the two ends of the second guide rod (4 c 3) are respectively and fixedly connected with the upper end and the lower end of the fixed plate (4 c 1), the servo motor (4 c 4) is arranged on the fixed plate (4 c 1), the output shaft of the servo motor (4 c 4) is fixedly connected with the end part of the screw rod (4 c 2) and is collinear in axis, the sliding table (4 c 5) is in threaded connection with the screw rod (4 c 2), the sliding table (4 c 5) is in clearance fit with the second guide rod (4 c 3), the sliding table (4 c 5) is fixedly connected with the second perforating machine (4 d),

the rodless cylinder is electrically connected with the lifting mechanism uniform controller, the controller sends a signal to the lifting mechanism, and the lifting mechanism receives the signal and then controls the second puncher to vertically descend; the controller sends a signal to the second puncher, the second puncher begins to work after receiving the signal, the through groove is processed to the axle overcoat original paper in cooperation with the lifting function of elevating system, after the processing of the first through groove on the axle overcoat original paper is accomplished, the controller sends a signal to the rodless cylinder, the rodless cylinder receives the signal and then controls elevating system and the second puncher to synchronously and horizontally displace to the opposite side of the axle overcoat original paper, simultaneously the second puncher processes the second through groove to the opposite side of the axle overcoat original paper, after the processing is accomplished, the controller controls rodless cylinder, elevating system and second puncher to reset.