CN211386604U

CN211386604U - Punching machine with riveting function

Info

Publication number: CN211386604U
Application number: CN201921430916.5U
Authority: CN
Inventors: 巫鑫明; 孙文华; 朱良平; 杨重; 巫梓轩
Original assignee: Dongguan Donghui Precision Hardware Co ltd
Current assignee: Dongguan Donghui Precision Hardware Co ltd
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2020-09-01
Anticipated expiration: 2029-08-30

Abstract

A punching machine with a riveting function comprises a punching machine body, a workbench and a punching die, wherein the punching machine body is arranged on the workbench and comprises a downward punching device, and a vertical projection surface of the punching device is positioned at the center of the workbench; the stamping die comprises an upper die and a lower die, the upper die is connected with the movable end of the stamping device downwards, the lower die is installed on the workbench upwards, and the upper die and the lower die correspond to each other; the upper die comprises an upper fixing plate, an upper mounting plate, a riveting cylinder, a thimble and a first spring, wherein the upper fixing plate is mounted on a piston of the stamping device, the upper mounting plate is mounted on the lower surface of the upper fixing plate, a first through hole matched with the riveting cylinder is formed in the center line of the upper mounting plate, an opening matched with the radius of a motor shaft workpiece is formed in one end of the riveting cylinder, a riveting head surrounding the opening is arranged on the opening surface, the opening of the riveting cylinder is mounted at the center of the bottom of the upper mounting plate downwards, and one end of the first spring is fixed at the inner bottom of the riveting cylinder.

Description

Punching machine with riveting function

Technical Field

The utility model belongs to the technical field of the punching machine and specifically relates to a punching machine with riveting function is related to.

Background

At present, in order to connect a rotor of a motor and a shaft tightly without sliding, the rotor and the shaft adopt an interference fit connection method, the rotor and the shaft are mostly installed by expansion with heat and contraction with cold during installation, but the rotor and the shaft may deform due to deformation in the expansion with heat and contraction with cold; in order to solve the defects of the problems, a punching machine with a riveting function is released in the market, a groove is arranged on a motor shaft and is positioned at an opening of a motor rotor connected with the motor shaft, the punching machine presses the periphery of the opening of the motor shaft rotor downwards, and materials at the opening of the motor rotor are extruded into the groove of the motor shaft, so that the motor is tightly connected with the rotor; however, the existing punching machine with the riveting function does not process the deformation direction of the material riveted by the motor rotor, so that part of the material of the motor rotor enters the groove of the motor shaft after riveting, and part of the material protrudes to the outside, so that the surface of the motor rotor is uneven, and a large error is generated.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an it is not enough to overcome above-mentioned condition, aims at providing the technical scheme that can solve above-mentioned problem.

A punching machine with a riveting function comprises a punching machine body, a workbench and a punching die, wherein the punching machine body is arranged on the workbench and comprises a downward punching device, and a vertical projection surface of the punching device is positioned at the center of the workbench; the stamping die comprises an upper die and a lower die, the upper die is connected with the movable end of the stamping device downwards, the lower die is installed on the workbench upwards, and the upper die and the lower die correspond to each other; the upper die comprises an upper fixing plate, an upper mounting plate, a riveting cylinder, a thimble and a first spring, wherein the upper fixing plate is arranged on a piston of the stamping device, the upper mounting plate is arranged on the lower surface of the upper fixing plate, a first through hole matched with the riveting cylinder is formed in the center line of the upper mounting plate, an opening matched with the radius of a motor shaft workpiece is formed in one end of the riveting cylinder, a riveting head surrounding the opening is arranged on the opening surface, the opening of the riveting cylinder is downwards arranged in the center of the bottom of the upper mounting plate, one end of the first spring is fixed at the inner bottom of the riveting cylinder, the other end of the first spring is used for fixing one end of the thimble, and the; the lower die comprises a positioning plate for placing a motor rotor workpiece and a lower fixing plate for fixing the positioning plate, and the lower fixing plate is fixed on the workbench.

Furthermore, the inner wall of the riveting head is inclined outwards from top to bottom, and the outer wall of the riveting head is perpendicular to the opening plane of the riveting cylinder.

Further, the height of the outer wall of the riveting head is 0.2 mm.

Furthermore, the distance from the outer wall of the riveting head to the edge of the opening of the riveting cylinder is 0.55 mm.

Furthermore, a first groove for placing a motor rotor workpiece is arranged in the center of the positioning plate, the opening of the first groove is upward, and the first groove and the riveting cylinder are located on the same central line.

Further, the radius of the first through hole on the upper mounting plate is smaller than that of the first groove.

Further, go up the mould and still include the second spring, pressure disk and two push rods, and it still is equipped with the ascending second recess of opening respectively still to go up the mounting panel and be located first through-hole both sides, second recess bottom be equipped with push rod assorted second through-hole, the center of pressure disk is equipped with the radius and is greater than the radial third through-hole of riveting section of thick bamboo, the pressure disk cover is on riveting a section of thick bamboo, the one end of two push rods is fixed at the pressure disk upper surface, be located the both sides of third through-hole, the other end gets into the second recess, and the one end shaping that gets into the second recess has the dog, the dog joint is in the second recess, the second spring housing is on riveting a section of thick bamboo, the one end of second spring is fixed at the pressure disk upper.

Compared with the prior art, the beneficial effects of the utility model are that:

through setting the riveting head inside measurement to the inclined wall, the riveting head can guide the material on the motor rotor workpiece to deform towards the middle in the process of riveting the motor rotor workpiece, the material enters the groove on the motor shaft workpiece, unevenness is brought to the surface of the motor rotor by reducing the generation of redundant materials, and the conditions of large error and the like are generated.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic front structural view of the present invention.

Fig. 2 is a schematic front view of the upper die and the lower die of the present invention.

Fig. 3 is a schematic front view of the upper die and the lower die of the present invention.

Fig. 4 is a schematic structural diagram of the middle riveting head for riveting.

Fig. 5 is a schematic structural view of the motor shaft workpiece and the motor rotor workpiece of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 5, a stamping machine with a riveting function includes a stamping machine body 1, a workbench 2 and a stamping die 3, wherein the stamping machine body 1 is mounted on the workbench 2, the stamping machine body 1 includes a downward stamping device 4, and a vertical projection plane of the stamping device 4 is located at the center of the workbench 2; the stamping die 3 comprises an upper die 10 and a lower die 20, wherein the upper die 10 is connected with the movable end of the stamping device 4 downwards, the lower die 20 is installed on the workbench 2 upwards, and the upper die 10 corresponds to the lower die 20; the upper die 10 comprises an upper fixing plate 11, an upper mounting plate 12, a riveting cylinder 13, a thimble 15 and a first spring 14, wherein the upper fixing plate 11 is mounted on a piston of the stamping device 4, the upper mounting plate 12 is mounted on the lower surface of the upper fixing plate 11, a first through hole 121 matched with the riveting cylinder 13 is arranged on the central line of the upper mounting plate 12, an opening matched with the radius of the motor shaft workpiece 5 is arranged at one end of the riveting cylinder 13, a riveting head 30 surrounding the opening is arranged on the opening surface, the opening of the riveting cylinder 13 is downwards mounted at the central position of the bottom of the upper mounting plate 12, one end of the first spring 14 is fixed at the inner bottom of the riveting cylinder 13, the other end of the first spring 14 is fixed with one end of the thimble 15, and the thimble 15; the lower die 20 comprises a positioning plate 22 for placing the motor rotor workpiece 6 and a lower fixing plate 21 for fixing the positioning plate 22, and the lower fixing plate 21 is fixed on the workbench 2.

In this embodiment, the motor shaft workpiece 5 and the motor rotor workpiece 6 are inserted and placed on the positioning plate 22, the riveting press is conducted, the motor shaft rotor enters the riveting press, the ejector pin 15 and the first spring 14 act together to generate a pressing elastic force to press the motor shaft workpiece 5, so that the motor shaft workpiece 5 is stably pressed in the motor rotor workpiece 6, the riveting head 30 on the riveting cylinder 13 is pressed on the motor rotor workpiece 6, the motor rotor workpiece 6 is made of the SUM23 material, a deformation effect is achieved, and the deformed material of the motor rotor workpiece 6 enters the groove on the motor shaft workpiece 5, so that the motor rotor workpiece 6 and the motor shaft workpiece 5 are embedded with each other, and tight combination is completed.

As further shown in fig. 4, the inner wall 31 of the riveting head 30 is inclined outwards from top to bottom, and the outer wall 32 of the riveting head 30 is perpendicular to the opening plane of the riveting cylinder 13; the riveting head 30 can guide the material on the motor rotor workpiece 6 to deform towards the middle in the process of riveting the motor rotor workpiece 6, and the material enters the groove on the motor shaft workpiece 5.

As further shown in fig. 4, the outer wall 32 of the riveting head 30 has a height of 0.2 mm; the distance from the outer wall 32 of the riveting head 30 to the opening edge of the riveting cylinder 13 is 0.55 mm; through calculating the volume of motor shaft recess, set up the size of riveting work piece, make the material that the riveting motor rotor back warp can fill up the recess of motor shaft work piece 5, make motor shaft and motor rotor can inseparabler combine after riveting is inlayed.

As further shown in fig. 2 or fig. 3, a first groove 221 for receiving the motor rotor workpiece 6 is formed in the center of the positioning plate 22, the first groove 221 opens upward, and the first groove 221 and the riveting cylinder 13 are located on the same center line; the radius of the first through hole 121 on the upper mounting plate 12 is smaller than that of the first groove 221.

Further as shown in fig. 2 or fig. 3, the upper die 10 further includes a second spring 17, a pressure plate 16 and two push rods 18, the upper mounting plate 12 is located on two sides of the first through hole 121 and is further provided with second grooves 122 with upward openings, the bottom of the second groove 122 is provided with second through holes 123 matched with the push rods 18, the center of the pressure plate 16 is provided with third through holes 161 with a radius larger than that of the riveting cylinder 13, the pressure plate 16 is sleeved on the riveting cylinder 13, one ends of the two push rods 18 are fixed on the upper surface of the pressure plate 16 and located on two sides of the third through holes 161, the other ends of the two push rods enter the second grooves 122, and a stopper 181 is formed at one end entering the second grooves 122, the stopper 181 is clamped in the second groove 122, the second spring 17 is sleeved on the riveting cylinder 13, one end of the second spring 17 is fixed on the upper surface of the pressure plate 16, and the other end of. The second spring 17, the pressure plate 16 and the push rod 18 form a downward pressing fixing mechanism, so that the motor shaft workpiece 5 can enter a groove of the positioning plate 22, and the stability of the riveting process is improved.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. A punching machine with a riveting function comprises a punching machine body, a workbench and a punching die, wherein the punching machine body is arranged on the workbench and comprises a downward punching device, and a vertical projection surface of the punching device is positioned at the center of the workbench; the stamping die comprises an upper die and a lower die, the upper die is connected with the movable end of the stamping device downwards, the lower die is installed on the workbench upwards, and the upper die and the lower die correspond to each other; the upper die is characterized by comprising an upper fixing plate, an upper mounting plate, a riveting cylinder, a thimble and a first spring, wherein the upper fixing plate is arranged on a piston of a stamping device, the upper mounting plate is arranged on the lower surface of the upper fixing plate, a first through hole matched with the riveting cylinder is formed in the center line of the upper mounting plate, an opening matched with the radius of a motor shaft workpiece is formed in one end of the riveting cylinder, a riveting head surrounding the opening is arranged on the opening surface, the opening of the riveting cylinder is downwards arranged at the center of the bottom of the upper mounting plate, one end of the first spring is fixed at the inner bottom of the riveting cylinder, one end of the thimble is fixed at the other end of the first spring, and the thimble is; the lower die comprises a positioning plate for placing a motor rotor workpiece and a lower fixing plate for fixing the positioning plate, and the lower fixing plate is fixed on the workbench.

2. The punch with riveting function according to claim 1, wherein the inner wall of the riveting head is inclined outwards from top to bottom, and the outer wall of the riveting head is vertical to the opening plane of the riveting cylinder.

3. A punch with riveting function according to claim 2, wherein the height of the outer wall of the riveting head is 0.2 mm.

4. A punch with riveting function according to claim 2, wherein the distance from the outer wall of the riveting head to the opening edge of the riveting cylinder is 0.55 mm.

5. The punching machine with riveting function according to claim 1, wherein the center of the positioning plate is provided with a first groove for placing the motor rotor workpiece, the first groove is opened upwards, and the first groove and the riveting cylinder are positioned on the same center line.

6. A punch press with riveting function according to claim 5, wherein the radius of the first through hole on the upper mounting plate is smaller than the radius of the first groove.

7. The punching machine with riveting function as claimed in claim 1, wherein the upper die further comprises a second spring, a pressure plate and two push rods, the upper mounting plate is provided with second grooves with upward openings at two sides of the first through hole, the bottom of the second groove is provided with a second through hole matched with the push rods, the center of the pressure plate is provided with a third through hole with a radius larger than that of the riveting cylinder, the pressure plate is sleeved on the riveting cylinder, one ends of the two push rods are fixed on the upper surface of the pressure plate and located at two sides of the third through hole, the other end of the two push rods enters the second groove, a stop block is formed at one end entering the second groove, the stop block is clamped in the second groove, the second spring is sleeved on the riveting cylinder, one end of the second spring is fixed on the upper surface of the pressure plate, and the other end of the second spring is fixed.