Automatic tight machine that expands of impacted style copper rotor conducting bar

文档序号：1326266 发布日期：2020-07-14 浏览：15次中文

阅读说明：本技术 一种冲击式铜转子导条自动胀紧机 (Automatic tight machine that expands of impacted style copper rotor conducting bar ) 是由谭新春周栋陈奇志肖晟刘悦音于 2020-04-23 设计创作，主要内容包括：本发明公开了一种冲击式铜转子导条自动胀紧机,包括工件定位装置、刀具移动装置、刀具安装装置和刀具运动控制系统；所述刀具移动装置包括横向移动装置和升降装置,所述升降装置安装在横向移动装置上；刀具安装装置包括刀具安装架和刀具盒,所述刀具安装架安装在升降装置上,刀具盒安装在刀具安装架上,所述刀具盒内安装有刀具；刀具运动控制系统包括刀具运动驱动装置、检测装置和控制系统；所述检测装置包括工件位置检测装置、工件沟槽位置检测装置、刀具位置检测装置和断刀检测装置；控制系统包括控制主机、输入装置、显示装置；横向移动装置、升降装置等均与控制主机电连接。本发明的自动化程度高,且能保证各根导条的胀紧程度均匀一致。(The invention discloses an impact type copper rotor conducting bar automatic expansion machine which comprises a workpiece positioning device, a cutter moving device, a cutter mounting device and a cutter motion control system, wherein the workpiece positioning device is connected with the cutter moving device through a connecting rod; the cutter moving device comprises a transverse moving device and a lifting device, and the lifting device is arranged on the transverse moving device; the cutter mounting device comprises a cutter mounting frame and a cutter box, the cutter mounting frame is mounted on the lifting device, the cutter box is mounted on the cutter mounting frame, and a cutter is mounted in the cutter box; the cutter motion control system comprises a cutter motion driving device, a detection device and a control system; the detection device comprises a workpiece position detection device, a workpiece groove position detection device, a cutter position detection device and a cutter breaking detection device; the control system comprises a control host, an input device and a display device; the transverse moving device, the lifting device and the like are electrically connected with the control host. The invention has high automation degree and can ensure the uniform and consistent expansion degree of each conducting bar.)

1. The utility model provides an automatic tight machine that expands of impacted style copper rotor conducting bar which characterized in that: comprises a workpiece positioning device, a cutter moving device, a cutter mounting device and a cutter motion control system;

a workpiece positioning device: the driving device comprises a supporting and positioning device and a supporting and positioning device;

the cutter moving device comprises a transverse moving device and a lifting device, and the lifting device is arranged on the transverse moving device;

the cutter mounting device comprises a cutter mounting frame and a cutter box, the cutter mounting frame is mounted on the lifting device, the cutter box is mounted on the cutter mounting frame, and a cutter is mounted in the cutter box;

the cutter motion control system comprises a cutter motion driving device, a detection device and a control system;

the tool motion driving device comprises a swing arm device, a swing arm device driving device, a clamping device, a tool motion driving part and a tool motion driving part guiding device;

the detection device comprises a workpiece position detection device, a workpiece groove position detection device, a cutter position detection device and a cutter breaking detection device;

the control system comprises a control host, an input device and a display device;

the driving device, the transverse moving device, the lifting device, the swing arm device driving device, the cutter movement driving part, the workpiece position detection device, the workpiece groove position detection device, the cutter position detection device, the broken cutter detection device, the input device and the display device of the supporting and positioning device are all electrically connected with the control host.

2. The automatic expansion machine of impact type copper rotor conducting bar according to claim 1, characterized in that:

the supporting and positioning device comprises two parallel rollers; the driving device for supporting the positioning device comprises a motor A; the two rollers can be driven by the motor A to rotate in the same direction and at the same speed;

the transverse moving device comprises a lead screw transmission device and a transverse moving base; the lead screw transmission device is arranged on the cabinet body and comprises a screw A and a nut A, and the nut A is fixedly connected with the transverse moving base; the motor B drives the screw A to move;

the lifting device comprises a guide box body, a mounting box body and a lead screw lifting device; the back surface of the guide box body is provided with a sliding chute, the installation box body is provided with a guide rail, and the sliding chute is in sliding connection with the guide rail; the screw rod lifting device comprises a screw rod B, a nut B and a screw rod mounting base; one screw rod mounting base is arranged on the transverse moving base, the other screw rod mounting base is arranged at the top end of the back surface of the guide box body, and the nut B is fixedly arranged on the back surface of the guide box body; the motor C drives the screw B to move;

the cutter mounting device also comprises a frame body supporting frame and a frame body combining piece, wherein the frame body supporting frame is mounted on the cutter mounting frame, and the frame body combining piece is mounted on the frame body supporting frame;

the workpiece position detection device is a photoelectric switch A, the workpiece groove position detection device is a photoelectric switch B, the cutter position detection device is a photoelectric switch C, and the broken cutter detection device is a proximity switch;

the motor A, the motor B, the motor C, the cylinder, the air hammer, the photoelectric switch A, the photoelectric switch B, the photoelectric switch C and the proximity switch are all electrically connected with the control host.

3. The automatic expansion machine of impact type copper rotor conducting bar according to claim 2, characterized in that: the swing arm connector comprises a pressure rod, two ends of the pressure rod are connected with connecting rods, one end of each connecting rod is fixedly connected with the pressure rod, the other end of each connecting rod is provided with an arc-shaped groove, a pin shaft is arranged in the middle of each connecting rod through a pin shaft mounting hole, the swing arm connector is mounted on the frame body connector through the pin shaft, and the pressure rod is positioned right below a cylinder joint of the cylinder; circular protruding rods are arranged on the left side and the right side of the anchor ear and are located in the circular arc-shaped grooves.

4. The automatic expansion machine of impact type copper rotor conducting bar according to claim 2, characterized in that: the top end of the cutter box is provided with a cover plate, the cover plate is provided with a hammer rod hole and a cover plate fixing hole A, the cutter box is provided with a cover plate fixing hole B, and the cover plate is fixed on the cutter box through a cover plate fixing hole A, B by a bolt; the cutter comprises a cutter handle and a cutter head; the knife handle is provided with a flange; the top end of the knife handle is provided with a hammer rod embedding groove, and the bottom of the knife handle is provided with a knife head mounting hole; the cutter spring is sleeved outside the cutter handle, a supporting step surface and a cutter outlet are formed in the bottom surface of the cutter box, and the cutter spring is located between the flange and the supporting step surface; the novel knife tool is characterized in that a knife guide rod is further installed in the knife tool box, a knife guide rod installation hole A is formed in the cover plate, a knife guide rod installation hole B is formed in the bottom surface of the knife tool box, the knife guide rod penetrates through the knife handle, one end of the knife guide rod is installed in the knife guide rod installation hole A, and the other end of the knife guide rod is installed in the knife guide rod installation hole B.

5. The automatic expansion machine of impact type copper rotor conducting bar according to claim 4, characterized in that: the cutter guide rod is also provided with a spacer bush A and a spacer bush B, a spacer bush hole is formed in the flange of the cutter handle, the spacer bush A is located above the cutter handle, the diameter of the spacer bush A is larger than that of the spacer bush B and the spacer bush hole, and the diameter of the spacer bush hole is larger than that of the spacer bush B.

6. The automatic expansion machine of impact type copper rotor conducting bar according to claim 4, characterized in that: and a copper sleeve is arranged at the cutter outlet.

7. The automatic expansion machine of impact type copper rotor conducting bar according to claim 2, characterized in that: the cutter movement driving part further comprises an air hammer spring, the air hammer is sleeved with the air hammer spring, and the air hammer spring is located between the baffle and the hoop.

8. The automatic expansion machine of impact type copper rotor conducting bar according to claim 2, characterized in that: the lead screw transmission device installs the protective sheath outward, the protective sheath is cup jointed in proper order by more than 4 protective sleeves and forms, sliding connection between the protective sleeve, and protective sleeve installs on the both sides of lateral shifting base, is close to the protective sleeve and the lateral shifting base fixed connection of lateral shifting base, is close to the protective sleeve and the cabinet body fixed connection of the cabinet body.

9. The automatic expansion machine of impact copper rotor conducting bar according to claim 8, characterized in that: the surface both ends of protective sleeve are equipped with outer fender ring A and keep off ring B outward respectively, the protective sleeve is equipped with the internal surface that keeps off that one end of ring B outward and is equipped with interior fender ring, and keeps off the inside dimension that encircles when the inside dimension of individual protective sleeve is greater than the outside dimension of the next protective sleeve that cup joints, is less than the outside dimension that keeps off ring A and outer fender ring B of the next protective sleeve that cup joints simultaneously.

10. The automatic expansion machine of an impact type copper rotor bar according to any one of claims 1 to 9, characterized in that: the cutter box, the cutter motion driving device, the cutter position detection device and the cutter breakage detection device are two in one group.

Technical Field

The invention belongs to the technical field of motor rotors, and particularly relates to an impact type automatic expansion machine for a copper rotor conducting bar.

Background

Copper conducting bars of the squirrel-cage rotor of the alternating current motor need to be tightly fixed in a rotor core slot in an expanding mode so as to prevent the copper conducting bars from generating axial displacement in the manufacturing process of the rotor and the running process of the motor. The iron core grooves are generally axially arranged on the circumferential side face of the rotor, the conducting bars are distributed in the iron core grooves, the number of the conducting bars is large, and the expansion workload is large.

The existing conducting bar expansion methods mainly comprise two methods, namely handheld pneumatic impact expansion and equipment inching impact expansion. The hand-held pneumatic type is characterized in that a manual hand-held pneumatic impact gun is used for assembling a punch, full-length impact is carried out on a rotor conducting bar, after one conducting bar is expanded, the rotor is manually rotated, the next conducting bar is operated, and the expansion range and the expansion pressure of the rotor are manually controlled. However, the manual impact expansion by the pneumatic punch has high labor intensity, unstable expansion depth of the guide bar and uneven quality. And through the mode that equipment point moves the impact and expands tightly, when carrying out narrow groove mouth conducting bar and expand tightly, easily produce the drift and crack the phenomenon, have the person, product potential safety hazard to when carrying out the point and move the impact to the conducting bar, lead to the deformation volume of conducting bar inhomogeneous, uncontrollable easily, form the deformation layer of wave undulation form on the conducting bar surface easily simultaneously, the tight effect of bloateing of conducting bar is not good, and the tight degree of bloateing is inhomogeneous.

Therefore, how to improve the expansion efficiency of the motor rotor conducting bars and ensure that the expansion degree of each conducting bar is uniform is a technical problem to be solved by the technical personnel in the field.

Disclosure of Invention

In order to solve the problems, the invention provides an impact type copper rotor conducting bar automatic expansion machine which adopts the following technical scheme:

an impact type copper rotor conducting bar automatic expansion machine comprises a workpiece positioning device, a cutter moving device, a cutter mounting device and a cutter motion control system;

a workpiece positioning device: the driving device comprises a supporting and positioning device and a supporting and positioning device;

the cutter moving device comprises a transverse moving device and a lifting device, and the lifting device is arranged on the transverse moving device;

the cutter motion control system comprises a cutter motion driving device, a detection device and a control system;

the tool motion driving device comprises a swing arm device, a swing arm device driving device, a clamping device, a tool motion driving part and a tool motion driving part guiding device;

the detection device comprises a workpiece position detection device, a workpiece groove position detection device, a cutter position detection device and a cutter breaking detection device;

the control system comprises a control host, an input device and a display device;

Preferably, the supporting and positioning device comprises two parallel rollers; the driving device for supporting the positioning device comprises a motor A; the two rollers can be driven by the motor A to rotate in the same direction and at the same speed;

Preferably, the swing arm connector comprises a pressure lever, two ends of the pressure lever are connected with connecting rods, one end of each connecting rod is fixedly connected with the pressure lever, the other end of each connecting rod is provided with an arc-shaped groove, a pin shaft is arranged in the middle of each connecting rod through a pin shaft mounting hole, the swing arm connector is arranged on the frame body connector through the pin shaft, and the pressure lever is positioned right below a cylinder joint of the cylinder; circular protruding rods are arranged on the left side and the right side of the anchor ear and are located in the circular arc-shaped grooves.

Preferably, a cover plate is arranged at the top end of the cutter box, a hammer rod hole and a cover plate fixing hole A are formed in the cover plate, a cover plate fixing hole B is formed in the cutter box, and the cover plate is fixed on the cutter box through a cover plate fixing hole A, B by using a bolt; the cutter comprises a cutter handle and a cutter head; the knife handle is provided with a flange; the top end of the knife handle is provided with a hammer rod embedding groove, and the bottom of the knife handle is provided with a knife head mounting hole; the cutter spring is sleeved outside the cutter handle, a supporting step surface and a cutter outlet are formed in the bottom surface of the cutter box, and the cutter spring is located between the flange and the supporting step surface; the novel knife tool is characterized in that a knife guide rod is further installed in the knife tool box, a knife guide rod installation hole A is formed in the cover plate, a knife guide rod installation hole B is formed in the bottom surface of the knife tool box, the knife guide rod penetrates through the knife handle, one end of the knife guide rod is installed in the knife guide rod installation hole A, and the other end of the knife guide rod is installed in the knife guide rod installation hole B.

Preferably, the cutter guide rod is externally provided with a spacer bush A and a spacer bush B, a spacer bush hole is formed in the flange of the cutter handle, the spacer bush A is located above the cutter handle, the diameter of the spacer bush A is larger than that of the spacer bush B and that of the spacer bush hole, and the diameter of the spacer bush hole is larger than that of the spacer bush B.

Preferably, the cutter outlet is provided with a copper sleeve.

Preferably, the cutter movement driving part further comprises an air hammer spring, the air hammer is sleeved with the air hammer spring, and the air hammer spring is located between the baffle and the hoop.

Preferably, the screw transmission device installs the protective sheath outward, the protective sheath is cup jointed in proper order by more than 4 protective sleeves and forms, sliding connection between the protective sleeve, and protective sleeve symmetry installs on the both sides of lateral shifting base, and the protective sleeve and the lateral shifting base fixed connection who are close to the lateral shifting base are close to the protective sleeve and the cabinet body fixed connection of the cabinet body.

Preferably, the two ends of the outer surface of the protective sleeve are respectively provided with an outer baffle ring a and an outer baffle ring B, the inner surface of the end of the protective sleeve, which is provided with the outer baffle ring B, is provided with an inner baffle ring, and the inner size of the inner baffle ring of each protective sleeve is larger than the outer size of the next sleeved protective sleeve, and is simultaneously smaller than the outer sizes of the outer baffle ring a and the outer baffle ring B of the next sleeved protective sleeve.

Preferably, the tool boxes, the tool movement driving device, the tool position detecting device and the broken tool detecting device are two in one group, the tool mounted in one tool box is a vertical tool, and the tool mounted in the other tool box is a horizontal tool.

The invention has the beneficial effects that:

1. the impact type automatic copper rotor conducting bar expansion machine provided by the invention outputs stable pressure by the air hammer, so that the expansion degree of each conducting bar can be ensured to be uniform.

2. The automatic expansion machine for the impact type copper rotor conducting bar provided by the invention has a wide application range, can process motor rotors with different sizes, and has high automation degree.

3. The cutter position detection device provided by the invention can ensure the accuracy of the machining position, effectively reduce the times of cutter breakage and improve the machining efficiency.

4. The cutter guide rod is arranged, so that the correctness of the machining position of the cutter head is ensured, and the cutter head is prevented from shifting.

5. The spacer bush A provided by the invention can avoid collision between the cutter handle and the cover plate when the cutter rebounds.

6. The cutter spring arranged in the invention can provide resilience force for the cutter, and is matched with the cutter motion driving device to realize the up-and-down reciprocating motion of the cutter.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural diagram of a base;

FIG. 3 is a schematic view of the back structure of the guiding box;

FIG. 4 is a schematic view of the construction of the tool mount;

FIG. 5 is a left side view of FIG. 4;

FIG. 6 is a schematic view showing a structure in which the cylinder head is pressed down in FIG. 5;

FIG. 7 is a schematic view of a tool box with tools mounted thereon;

FIG. 8 is a schematic structural view of a cover plate;

FIG. 9 is a schematic view of the construction of the tool box;

FIG. 10 is a cross-sectional view taken along line A-A of FIG. 9;

FIG. 11 is a schematic view of the structure of the tool shank;

FIG. 12 is a schematic view of the construction of the tool guide bar;

FIG. 13 is a schematic structural view of a swing arm joint;

fig. 14 is a schematic view of a protective sleeve;

FIG. 15 is a right side view of FIG. 14;

FIG. 16 is a schematic structural view of a lead screw drive;

FIG. 17 is a schematic view of the hammer stem;

FIG. 18 is a cross-sectional view taken along line B-B of FIG. 17;

in the figure, 1, a cabinet body; 2. installing a box body; 3. a guide box body; 4. a tool mounting bracket; 5. A photoelectric switch A; 6. a photoelectric switch B; 7. a guide rail; 8. transversely moving the base; 9. a protective sleeve; 10. a screw B; 11. a screw rod mounting seat; 12. a motor rotor; 13. a base; 14. a roller; 15. a protective sleeve; 1501. an outer retainer ring A; 1502. an outer retainer ring B; 1503. an inner baffle ring; 16. a chute; 17. a nut B; 18. a cylinder; 19. a cylinder joint; 20. a pressure lever; 21. a connecting rod; 2101. a pin shaft mounting hole; 2102. a circular arc-shaped groove; 22. a shaft pin; 23. a frame body supporting frame; 24. a hammer lever; 25. a tool box; 2501. supporting the step surface; 2502. a cutter guide rod mounting hole B; 2503. a cover plate fixing hole B; 2504. a cutter outlet; 26. a copper sleeve; 27. erecting a cutter; 28. a transverse cutter; 29. a cutter spring; 30. a knife handle; 3001. the hammer lever is embedded in the groove; 3002. a sleeve separating hole; 3003. a flange; 3004. a cutter mounting hole; 31. a cover plate; 3101. A hammer rod hole; 3102. a cutter guide rod mounting hole A; 3103. a cover plate fixing hole A; 32. A shaft seat; 33. a shaft sleeve; 34. a photoelectric switch C; 35. a circular nose bar; 36. hooping; 37. An air hammer; 38. an elliptical hole; 39. a frame body combining part; 40. a baffle plate; 41. an air hammer spring; 42. A spacer bush A; 43. a spacer bush B; 44. a screw hole is arranged on the proximity switch; 45. a cutter guide bar; 46. A screw A; 47. and a nut A.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1-18, an impact type copper rotor bar automatic expansion machine comprises a workpiece positioning device, a cutter moving device, a cutter mounting device and a cutter motion control system;

the workpiece positioning device comprises a base, wherein two parallel rollers are arranged on the base. The central lines of the two parallel rollers are aligned with the central line of the cutter head of the cutter, the distance between the two rollers is smaller than the diameter of a workpiece to be machined (a motor rotor to be machined), and the two rollers can be driven by a motor A to rotate in the same direction and at the same speed;

the cutter moving device comprises a transverse moving device and a lifting device.

The transverse moving device comprises a lead screw transmission device, a transverse moving base and a protective sleeve.

The lead screw transmission device comprises a screw A and a nut A, the screw A is installed on the cabinet body, and the nut A is fixedly connected with the transverse moving base.

Lead screw drive installs the protective sheath outward, the protective sheath is cup jointed in proper order by more than 4 and forms, and protective sheath symmetry installs on the both sides of lateral shifting base (respectively install 6 protective sheath on the both sides of lateral shifting base in this embodiment), is close to the protective sheath and the lateral shifting base fixed connection of lateral shifting base, is close to the protective sheath and the cabinet body fixed connection of the cabinet body. The two ends of the outer surface of the protective sleeve are respectively provided with an outer baffle ring A and an outer baffle ring B, the inner surface of the end, provided with the outer baffle ring B, of the protective sleeve is provided with an inner baffle ring, and when the inner size of the inner baffle ring of each protective sleeve (for example, the protective sleeve is square, the size is the length and width, and for example, the protective sleeve is circular, the size is the diameter) is larger than the outer size of the next sleeved protective sleeve, and is smaller than the outer sizes of the outer baffle ring A and the outer baffle ring B of the next sleeved protective sleeve. Thus, the protective sleeves can be connected in a sliding way without falling off.

The lifting device comprises a guide box body, a mounting box body and a lead screw lifting device; the back of the guide box body is provided with a sliding chute, two sides of the installation box body are provided with bosses for installing a guide rail, and the sliding chute is matched with the guide rail; the screw rod lifting device comprises a screw rod B, a nut B and a screw rod mounting base; one screw rod mounting base is arranged on the transverse moving base, the other screw rod mounting base is arranged at the top end of the mounting box body, and the nut B is fixed on the back of the guide box body; the motor B drives the screw A to move, and the motor C drives the screw B to move;

the cutter mounting device comprises a cutter mounting frame, a frame body supporting frame, a frame body combining piece, a shaft seat and a cutter box.

The tool mounting frame is mounted on the guide box body, the frame body supporting frame is mounted above a vertical plate of the tool mounting frame, the tool box is mounted on a bottom transverse plate of the tool mounting frame, and the frame body combining piece is mounted above the frame body supporting frame; the shaft seat is arranged on the front side surface of the support frame.

The top of cutter box is equipped with the apron, be equipped with hammer stem hole, cutter guide bar mounting hole A, apron fixed orifices A on the apron, be equipped with apron fixed orifices B on the cutter box, fix the apron on the cutter box through apron fixed orifices A, B with the bolt.

The bottom surface of the cutter box is provided with a supporting step surface, a cutter outlet and a cutter guide rod mounting hole B.

And a cutter guide rod are arranged in the cutter box.

The cutter comprises a cutter handle and a cutter head; the cutter handle is provided with a flange, and 4 sleeve separating holes are annularly formed in the flange; the top of handle of a knife is equipped with hammer stem gomphosis groove, and the bottom of handle of a knife is equipped with the tool bit mounting hole. The cutter outlet is provided with a copper sleeve, the copper sleeve is arranged on the supporting step surface, the cutter handle is sleeved with a cutter spring, and the cutter spring is positioned between the flange and the copper sleeve.

The cutter guide rod penetrates through the sleeve separating hole, one end of the cutter guide rod penetrates through the cutter guide rod mounting hole A, and the other end of the cutter guide rod penetrates through the cutter guide rod mounting hole B. The cutter guide rod is also externally provided with a spacer bush A and a spacer bush B, the spacer bush A is positioned above the cutter handle, the diameter of the spacer bush A is larger than that of the spacer bush B and the spacer bush hole, and the diameter of the spacer bush hole is larger than that of the spacer bush B.

The tool motion control system comprises a tool motion driving device, a detection device and a control system.

The tool motion driving device comprises a swing arm device, a swing arm device driving device, a clamping device, a tool motion driving part and a tool motion driving part guiding device;

the swing arm device comprises a swing arm connector, the swing arm device driving device comprises an air cylinder and an air cylinder connector, and the clamping device comprises a hoop; the cutter movement driving part comprises an air hammer, an air hammer spring and a hammer rod, the conical rod is installed at the output end of the air hammer, and an oval supporting surface is arranged at the upper part of the conical rod to support the air hammer; the cutter movement driving part guiding device comprises a shaft seat; the swing arm connector comprises a pressure rod, two ends of the pressure rod are connected with connecting rods, one end of each connecting rod is fixedly connected with the pressure rod, the other end of each connecting rod is provided with an arc-shaped groove, a pin shaft is arranged in the middle of each connecting rod through a pin shaft mounting hole, the swing arm connector is mounted on the frame body connector through the pin shaft, the air cylinder is mounted on the frame body connector, and the pressure rod is positioned right below an air cylinder connector; circular protruding rods are arranged on the left side and the right side of the anchor ear and are located in the circular arc-shaped grooves. The shaft seat is arranged in front of the frame body support frame, and a shaft sleeve is arranged in the shaft seat; a baffle is arranged in front of the frame body combining part, an air hammer hole is formed in the baffle, and the air hammer penetrates through the air hammer hole and the shaft seat; the hoop is fixedly installed on the air hammer and located between the baffle and the shaft seat.

The detection device comprises a workpiece position detection device, a workpiece groove position detection device, a cutter position detection device and a cutter breaking detection device; the workpiece position detection device is a photoelectric switch A, the workpiece groove position detection device is a photoelectric switch B, the cutter position detection device is a photoelectric switch C, and the broken cutter detection device is a proximity switch. Photoelectric switch A, photoelectric switch B all install on the bottom surface diaphragm of cutter mounting bracket. The tool box is provided with an elliptical hole, the proximity switch is installed on the tool box through the proximity switch installation screw hole by using a bolt, and the detection end of the proximity switch penetrates through the elliptical hole to be located in the tool box. The lower end of the photoelectric switch C is fixedly installed on the shaft seat, the upper end of the photoelectric switch C is provided with a detection cavity, and the tail end of the circular convex rod is located in the detection cavity.

In this embodiment, the tool box, the tool positioning device, the tool movement driving device, the tool position detecting device, and the tool breakage detecting device are two in one group. The cutter mounted in one cutter box is a vertical cutter, and the cutter mounted in the other cutter box is a horizontal cutter.

The control system (not shown in the figure) comprises a control host, an input device and a display device; the motor A, the motor B, the motor C, the two cylinders, the two air hammers, the photoelectric switch A, the photoelectric switch B, the two photoelectric switches C and the two proximity switches are all electrically connected with the control host.

In this embodiment, the motor a, the motor B, and the motor C are all positive and negative rotation motors.

In this embodiment, the control host is a programmable controller, the display device includes a display device 1 and a display device 2, both the display device 1 and the display device 2 are electrically connected to the control host, the display device 1 is a liquid crystal display screen for displaying input parameter conditions, and the display device 2 is an L ED display screen for displaying processing progress conditions.

When the axial conducting bar needs to be expanded, a workpiece (motor rotor) to be processed is placed between two parallel rollers, meanwhile, the processing parameters are set by the input device at the control host, the set parameters comprise the size (including the diameter and the length) of the motor rotor, the number of grooves needing to be processed, the starting and stopping positions of the grooves and the distance between an end ring and a radiating hole and the distance between the radiating hole and the end ring. After the parameter setting is completed, the equipment starts to work. The control host controls the motor C to start, drives the screw lifting device to move, and enables the cutter to be located at the machining height position (the cutter position is known, and the machining height position of the cutter can be calculated according to the size of the input motor rotor). And when the cutter reaches the required height position, the control host controls the motor C to stop rotating. And then the control host controls to start the motor B, the motor B drives the screw transmission device to move, and meanwhile, the photoelectric switch A detects whether the cutter reaches the position of the workpiece to be processed. When the photoelectric switch A detects the end ring of the workpiece to be processed, a signal is sent to the control host, and after the control host receives the signal, the lead screw transmission device is controlled to move slowly, so that the cutter reaches the initial position of the groove (because the size of a motor rotor is input into the control host, the distance between the starting position and the stopping position of the groove and the end ring, and the starting position and the stopping position of the groove and the position of the heat dissipation hole can be calculated by the control host according to the position of the end ring). And when the cutter reaches the position, the control host controls the motor B to stop rotating.

And then detecting whether the groove to be processed of the workpiece to be processed is located at a processing position by the photoelectric switch B, if not, sending a signal to the control host by the photoelectric switch B, sending the signal to the motor A by the control host after receiving the signal, and driving the two rollers to rotate in the same direction by the motor A so as to drive the workpiece to be processed to rotate, wherein in the rotating process, the photoelectric switch B continuously detects. When the groove to be machined is detected to be located at a machining position, the photoelectric switch B sends a signal to the control host, the control host receives the signal, the control motor A stops rotating, and sends a signal to the air cylinder (driving the air cylinder of the vertical knife), the air cylinder starts to retract and drives the air cylinder connector to move upwards, and under the action of the gravity of the air hammer and the hoop and the resilience force of the air hammer spring, the air hammer moves downwards and drives the hammer rod to be close to the knife handle. Then the control host machine controls the air hammer to start, the air hammer presses down to drive the hammer rod, the hammer rod drives the cutter (the cutter head moves downwards while compressing the cutter spring) to move downwards, then the air hammer is closed, the cutter returns upwards under the action of the resilience force of the cutter spring, meanwhile, the control host machine controls the motor B to start, the motor B drives the lead screw transmission device and the lead screw transmission device to drive the cutter to slightly move leftwards or rightwards, then the control host machine controls the motor B to stop rotating, then the control host machine controls the air hammer to start, the air hammer drives the hammer rod and the hammer rod to drive the cutter to move downwards, and the steps are repeated, so that the cutter reciprocates up and down in the leftward or rightward slightly moving process of the cutter, and the guide strip is expanded.

When the cutter moves to the position of the heat dissipation hole, the control host controls the air cylinder to drive the air cylinder connector downwards, the air cylinder connector presses the pressure rod downwards, and therefore the other end of the connecting rod drives the hoop and the hoop drives the air hammer to move upwards until the air cylinder reaches an output value. When the air hammer moves upwards, the hammer rod loses pressure, and the tool shank returns upwards to the original position under the action of the resilience force of the tool spring to drive the tool bit to move upwards. After the cutter passes through the radiating hole, the control host controls the cylinder to retract, the cylinder connector is driven to move upwards, the air hammer moves downwards under the action of the gravity of the air hammer and the hoop and the resilience force of the air hammer spring, the hammer rod is driven to press the cutter handle downwards, and the cutter head moves downwards while the cutter spring is compressed. This is repeated.

In the process that the hammer rod is pressed down by the air hammer, the hammer rod presses down the knife handle to drive the knife head to move downwards, and whether the knife head of the knife smoothly enters the groove is detected by the photoelectric switch C. If the photoelectric switch C detects that the descending position of the circular convex rod reaches a preset position, the cutter head smoothly enters the groove downwards; if the photoelectric switch C detects that the circular convex rod does not fall to the preset position, the situation shows that the cutter head cannot enter the groove downwards smoothly (because the cutter head falls into the groove in the falling process, the cutter head cannot continue downwards, and the cutter head cannot continue downwards to block the circular convex rod from continuing downwards, so that the circular convex rod cannot fall to the preset position), at the moment, the photoelectric switch C sends a signal to the control host, and the control host sends an alarm signal after receiving the signal.

When the cutter head is broken, the cutter descends more than the cutter in a normal working state, the proximity switch detects the cutter handle (the cutter handle cannot be detected by the proximity switch in the normal working state), the proximity switch sends a signal to the control host, and the control host sends an alarm signal.

When the annular groove beside the end ring needs to be machined, a cross knife needs to be used. The control principle of the horizontal knife is consistent with that of the vertical knife, and the description is omitted here.

In the invention, the cutter handle and the cutter head are made of 40CrNiMoA materials and are quenched. So that the knife handle and the knife head have higher strength and good toughness.

The above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, and any simple modifications or equivalent substitutions of the technical solutions that can be obviously obtained by those skilled in the art within the technical scope of the present invention are within the scope of the present invention.

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