CN211951115U

CN211951115U - Plate-shaped part for preventing pin from coming off and annular closing-up processing device thereof

Info

Publication number: CN211951115U
Application number: CN201922034372.7U
Authority: CN
Inventors: 陈宁; 李玲; 崔庆
Original assignee: Wuhan Fine Blanking Technology Co ltd
Current assignee: Wuhan Zhonghang fine blanking technology branch of Hubei Zhonghang Fine Blanking Technology Co.,Ltd.
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-11-17
Anticipated expiration: 2029-11-22

Abstract

The utility model discloses a prevent plate-like part that pin deviates from and annular processingequipment that closes up thereof is equipped with the cotter hole on the part, and the one end drill way department in cotter hole is equipped with the round annular and closes up, and the pin cooperation is by annular close up axial spacing when the cotter hole is downthehole. The part limits the axial displacement of the pin through the annular closing-in without increasing a limiting part, so that the cost is reduced, and the space is saved.

Description

Plate-shaped part for preventing pin from coming off and annular closing-up processing device thereof

Technical Field

The utility model belongs to the machining field, concretely relates to prevent plate-shaped part that pin deviate from and annular binding off processingequipment thereof.

Background

The existing pin and hole assembly mainly comprises clearance fit, excessive fit and interference fit, and the pin and hole assembly is in clearance fit under the condition of no special requirement. When a plurality of parts are assembled and positioned through the pins, the pins can axially displace or even be separated from the parts after assembly because the pins are in clearance fit with the parts. At present, for the axial displacement of restriction pin, need increase the locating part at pin both ends, increased the cost and occupied the space.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a prevent plate-like part that pin deviates from and annular binding off processingequipment thereof, this part need not to increase the locating part through the axial displacement of annular binding off restriction pin, has reduced the cost, has practiced thrift the space.

The utility model adopts the technical proposal that:

a plate-shaped part for preventing a pin from being separated is provided with a pin hole, a round of annular closing-up is arranged at an orifice of one end of the pin hole, and the pin is axially limited by the annular closing-up when being matched in the pin hole.

The utility model provides a processingequipment of annular binding off on above-mentioned plate part of processing, including establishing the drift on the press, the lower bolster and the guard pin of wearing out the lower bolster, just right from top to bottom and with the axle center of drift and guard pin, the guard pin can be equipped with the chamfer with the pin hole cooperation and the top of part, the drift bottom surface is equipped with dodges groove and the protruding tooth of round that is used for dodging the guard pin, the part is placed on the lower bolster and the pin hole cooperation is worn on the guard pin, the upper end drill way inboard and the chamfer in pin hole form hollowly, when the press drives the drift and moves down and targets in place, the part is impressed in the outer lane position in pin hole to.

Further, the protruding tooth section is V-shaped.

The second kind processes the processingequipment of annular binding off on the above-mentioned platelike part, including establishing the drift on the press, the lower bolster, wear out the guard pin of lower bolster, drift and guard pin are just right and coaxial from top to bottom, the guard pin can be equipped with the boss with the pin hole cooperation and the terminal surface of part, the bottom surface of drift is equipped with the groove of dodging that is used for dodging the boss, the diameter is greater than the pin hole diameter of part, the part is placed on the lower bolster and when the pin hole cooperation was worn on the guard pin, thereby the part upper surface is higher than the terminal surface of guard pin and forms hollowly in the upper end drill way inboard in pin hole, when the press drives the drift and moves down and targets in place, the part is impressed in the inside and outside.

Further, the avoiding groove can be matched with the boss.

The third processing device for processing the annular closing-in on the plate-shaped part comprises a punch arranged on a press machine, a lower padding plate and a protection pin penetrating through the lower padding plate, wherein the punch and the protection pin are vertically opposite and coaxial, a guide groove capable of being matched with the protection pin is formed in the punch, the diameter of the protection pin is smaller than the initial hole diameter of the part, the diameter of the punch is larger than the initial hole diameter of the part and equal to the pin hole diameter of the part, when the part is placed on the lower padding plate and the initial hole penetrates through the protection pin, the protection pin penetrates through the part and forms a hollow structure with the inner side of the initial hole, and when the press machine drives the punch to move downwards, the punch is pressed into the hole wall of the initial.

Further, the bottom end of the punch is provided with a smooth chamfer.

The utility model has the advantages that:

the part limits the axial displacement of the pin through the annular closing-in without increasing a limiting part, so that the cost is reduced, and the space is saved.

Drawings

Fig. 1 is a schematic structural diagram of a processing device according to a first embodiment of the present invention (a press machine is omitted).

Fig. 2 is a cross-sectional view of a part processed in a first embodiment of the present invention.

Fig. 3 is a matching diagram of the parts and the pins processed in the first embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a processing apparatus according to a second embodiment of the present invention (the press machine is omitted).

Fig. 5 is a schematic structural diagram of a processing device according to a third embodiment of the present invention (the press machine is omitted).

In the figure: 11-a screw; 12-an upper die holder; 13-upper backing plate; 14-a punch; 15-a guard pin; 16-lower backing plate; 17-a lower die holder; 21-a punch; 22-a guard pin; 23-lower backing plate; 31-a punch; 32-a guard pin; 33-lower backing plate.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

The utility model provides a prevent plate-like part that the pin deviates from is equipped with the pin hole on the part, and the one end drill way department in pin hole is equipped with round annular binding off, and the pin cooperation is by annular binding off axial spacing when the pin is downthehole. The part limits the axial displacement of the pin through the annular closing-in without increasing a limiting part, so that the cost is reduced, and the space is saved.

Example one

As shown in fig. 1 to 3, the device for processing the annular closing-in on the plate-shaped part includes a punch 14, a lower pad 16 and a protection pin 15 penetrating through the lower pad 16, the punch 14 and the protection pin 15 are aligned vertically and coaxially, the protection pin 15 can be matched with a pin hole of the part, a chamfer is arranged at the top end of the protection pin 15, an avoiding groove and a circle of protruding teeth for avoiding the protection pin 15 are arranged on the bottom surface of the punch 14, when the part is placed on the lower pad 16 and the pin hole is matched and penetrated on the protection pin 15, the inner side of an upper end orifice of the pin hole is hollow with the chamfer, and when the punch 14 is driven by the press to move down to the position, the protruding teeth press the part at the outer ring position of the pin hole. When the protruding tooth is pressed into a part, part of the material flows from the press riveting surface to the non-press riveting surface, and the other part of the material flows into the inside and the outside of the press riveting line.

As shown in fig. 1, in the first embodiment, the protruding teeth have V-shaped cross-sections, which can press the parts quickly and have the effect of guiding the material into the hole. Of course, the protruding tooth section is not limited to V-shape, but may be other shapes such as inverted U-shape.

Example two

As shown in fig. 4, the device for processing the annular closing-in on the plate-shaped part comprises a punch 21, a lower backing plate 23 and a protection pin 22 penetrating through the lower backing plate 23, wherein the punch 21 and the protection pin 22 are opposite and coaxial up and down, the protection pin 22 can be matched with a pin hole of the part, a boss is arranged on the end surface of the protection pin 22, an avoiding groove for avoiding the boss is arranged on the bottom surface of the punch 21, the diameter of the avoiding groove is larger than that of the pin hole of the part, when the part is placed on the lower backing plate 23 and the pin hole is matched and penetrated on the protection pin 22, the upper surface of the part is higher than the end surface of the protection pin 22, so that a hollow part is formed inside the upper end hole of the pin hole, and when the punch 21 is driven by the press to move down to. When the bottom surface of the punch 21 is pressed into the part, the part is plastically deformed, and because the pin hole is hollow, the material flow resistance is small, and the material mainly flows into the pin hole, so that an annular closing-in is formed at the end part.

As shown in fig. 4, in the second embodiment, the avoiding groove can be matched with the boss, and the boss plays a guiding role when the press machine drives the punch 21 to move down to the right position.

EXAMPLE III

As shown in fig. 5, the apparatus for processing the annular closing-in on the plate-shaped part includes a punch 31, a lower pad 33, and a protection pin 32 penetrating through the lower pad 33, the punch 31 and the protection pin 32 are opposite and coaxial, the punch 31 is provided with a guide groove capable of cooperating with the protection pin 32, the diameter of the protection pin 32 is smaller than the initial hole diameter of the part, the diameter of the punch 31 is larger than the initial hole diameter of the part and equal to the pin hole diameter of the part, when the part is placed on the lower pad 33 and the initial hole penetrates through the protection pin 32, the protection pin 32 penetrates through the part and forms a hollow with the inner side of the initial hole, when the punch 31 is driven by the press to move down, the punch 31 is fitted on the protection pin 32 through the guide groove and then is pressed into the hole wall of the initial hole. When the punch 31 is pressed into a part, the material on the wall of the initial hole is plastically deformed, and because the protective pin 32 and the inner side of the initial hole are hollow and the flow resistance of the material is small, the material mainly flows downwards, so that an annular closing-up is formed at the bottom end, and simultaneously, a pin hole is synchronously formed.

As shown in fig. 5, in the third embodiment, the bottom end of the punch 31 is provided with a smooth chamfer to avoid stress concentration and damage to the annular closing-in.

It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.

Claims

1. A plate-shaped part for preventing a pin from coming off is characterized in that: the part is provided with a pin hole, one end orifice of the pin hole is provided with a circle of annular closing-in, and the pin is axially limited by the annular closing-in when matched in the pin hole.

2. An annular closing-up processing device for processing the plate-shaped part for preventing the pin from falling off according to claim 1, which is characterized in that: including establishing drift on the press, the lower bolster and the guard pin of wearing out the lower bolster, drift and guard pin are just right from top to bottom and with the axle center, the guard pin can cooperate and the top is equipped with the chamfer with the pin hole of part, the drift bottom surface is equipped with dodges the groove and the protruding tooth of round that are used for dodging the guard pin, the part is placed on the lower bolster and the pin hole cooperation is worn on the guard pin, the upper end drill way inboard in pin hole forms hollowly with the chamfer, when the press drives the drift and moves down to the right place, the protruding tooth is at the part of impressing in the outer lane position in pin hole.

3. The annular necking processing apparatus of claim 2, wherein: the section of the protruding tooth is V-shaped.

4. An annular closing-up processing device for processing the plate-shaped part for preventing the pin from falling off according to claim 1, which is characterized in that: including establishing the drift on the press, the lower bolster, wear out the guard pin of lower bolster, drift and guard pin are just about just and coaxial, the guard pin can cooperate and the terminal surface is equipped with the boss with the pin hole of part, the bottom surface of drift is equipped with the groove of dodging that is used for dodging the boss, the diameter is greater than the pin hole diameter of part, the part is placed on the lower bolster and the pin hole cooperation is worn on the guard pin, thereby the part upper surface is higher than the terminal surface of guard pin and forms hollowly in the upper end drill way inboard in pin hole, the press drives the drift and moves down when reaching in place, the part is impressed in the inside and outside in pin hole to the bottom surface of.

5. The annular necking processing apparatus of claim 4, wherein: the avoiding groove can be matched with the boss.

6. An annular closing-up processing device for processing the plate-shaped part for preventing the pin from falling off according to claim 1, which is characterized in that: including establishing the drift on the press, the lower bolster, wear out the guard pin of lower bolster, drift and guard pin are just about just and coaxial, be equipped with on the drift can with guard pin complex guide way, the diameter of guard pin is less than the initial hole diameter of part, the diameter of drift is greater than the initial hole diameter of part, equal to the pin hole diameter of part, the part is placed on the lower bolster and when initial hole worn on the guard pin, the guard pin wears out the part and forms hollowly with initial downthehole side, when the press drives the drift and moves down, the drift passes through the guide way cooperation cover and impresses the pore wall in initial hole behind the guard pin.

7. The annular necking processing apparatus of claim 6, wherein: the bottom end of the punch is provided with a smooth chamfer.