阅读说明：本技术 防止销钉脱出的板状零件及其环形收口加工装置 (Plate-shaped part for preventing pin from coming off and annular closing-up processing device thereof ) 是由 陈宁 李玲 崔庆 于 2019-11-22 设计创作，主要内容包括：本发明公开了一种防止销钉脱出的板状零件及其环形收口加工装置,零件上设有销钉孔,销钉孔的一端孔口处设有一圈环形收口,销钉配合在销钉孔内时被环形收口轴向限位。该零件通过环形收口限制销钉的轴向位移,无需增加限位件,减少了成本,节约了空间。(The invention discloses a plate-shaped part for preventing a pin from falling off and an annular closing-up processing device thereof. 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.)

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. A device for forming an annular neck in a part according to claim 1, wherein: 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 processing apparatus as set forth in claim 2, wherein: the section of the protruding tooth is V-shaped.

4. A device for forming an annular neck in a part according to claim 1, wherein: 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 processing apparatus as set forth in claim 4, wherein: the avoiding groove can be matched with the boss.

6. A device for forming an annular neck in a part according to claim 1, wherein: 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 processing apparatus as set forth in claim 6, wherein: the bottom end of the punch is provided with a smooth chamfer.

Technical Field

The invention belongs to the field of machining, and particularly relates to a plate-shaped part capable of preventing a pin from coming off and an annular closing-up machining device 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.

Disclosure of Invention

The invention aims to provide a plate-shaped part for preventing a pin from coming off and an annular closing-in processing device thereof.

The technical scheme adopted by the invention is as follows:

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 invention has the beneficial effects 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 view of a processing apparatus 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 accordance with one embodiment of the present invention.

Fig. 3 is a drawing of a machined part and pin combination in accordance with a first embodiment of the present invention.

FIG. 4 is a schematic view showing the structure of a processing apparatus according to a second embodiment of the present invention (the press machine is omitted).

FIG. 5 is a schematic structural view of a processing apparatus 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 invention is further described below with reference to the figures and examples.

The invention provides a plate-shaped part for preventing a pin from falling off, wherein a pin hole is formed in the part, a circle of annular closing-up is arranged at an orifice at 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 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.