CN212599125U

CN212599125U - Annular piston drilling clamp for engineering machinery

Info

Publication number: CN212599125U
Application number: CN202021118917.9U
Authority: CN
Inventors: 王雪华; 戴国强
Original assignee: Jiashan Huakai Machinery Co ltd
Current assignee: Jiashan Huakai Machinery Co ltd
Priority date: 2020-06-16
Filing date: 2020-06-16
Publication date: 2021-02-26
Anticipated expiration: 2030-06-16

Abstract

The annular piston drilling clamp for the engineering machinery comprises a circular horizontal chassis, wherein the center of the horizontal chassis is connected with an upright post through a plurality of connecting rods, the outer wall of the upper end of the upright post is provided with external threads, the annular piston drilling clamp further comprises a detachable pressing disc, the center of the detachable pressing disc is provided with a through hole for the upright post to be inserted, the upper end of the upright post is sleeved with a pressing block and a locking nut in threaded connection with the external threads, the detachable pressing disc is sleeved on the upright post and is positioned below the pressing block, the detachable pressing disc is provided with a plurality of drill bit stretching holes which are uniformly distributed in the circumferential direction, the lower surface of the detachable pressing disc is connected with an end surface positioning round table which is abutted against the inner end surface of an annular piston, the end surface positioning round table is provided with communication holes which are in one-to-one correspondence, the through hole penetrates through the end face positioning round platform and the central hole positioning round platform downwards.

Description

Annular piston drilling clamp for engineering machinery

Technical Field

The utility model belongs to the technical field of the piston, especially, relate to an annular piston boring grab for engineering machine tool.

Background

The annular piston is provided with a plurality of holes which are uniformly distributed in the circumference, and the conventional annular piston is generally positioned by circumferential side edges and then drilled when drilling. This has the advantage that positioning is easy and simple. However, this approach has the disadvantages that: the axis of the piston hole which is processed and surrounded to form a circle after positioning has deviation with the axis of the piston, so that the overall precision is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem, a can solve above-mentioned technical problem's annular piston boring grab for engineering machine tool is provided.

In order to achieve the above purpose, the utility model adopts the following technical proposal:

In the annular piston drilling clamp for the engineering machinery, the drill bit extends into the hole and is provided with the wear-resistant shaft sleeve.

In the annular piston drilling clamp for engineering machinery, the upper end face of the wear-resistant shaft sleeve is flush with the upper end face of the detachable pressing disc, and the lower end face of the wear-resistant shaft sleeve is flush with the lower end face of the detachable pressing disc.

In the annular piston drilling clamp for engineering machinery, the pressing block is a U-shaped inserting block.

Compared with the prior art, this annular piston boring grab for engineering machine tool's advantage lies in: the upper side coaxial shaft is clamped and finally positioned and fixed, so that the shaft axis of the drilled hole can be ensured to coincide with the shaft axis of the inner hole of the annular piston after a circle is formed by encircling, and the machining precision is ensured.

Drawings

Fig. 1 is a schematic view of the clamp structure provided by the present invention.

Fig. 2 is a schematic view of a horizontal chassis structure provided by the present invention.

Fig. 3 is a schematic view of a top view structure of the detachable pressing plate provided by the present invention.

Fig. 4 is a schematic diagram of the pressing block structure provided by the present invention.

Fig. 5 is a schematic structural view of the annular piston provided by the present invention.

Fig. 6 is a schematic view of the state that the annular piston is fixed in the clamp.

In the figure, a horizontal chassis 1, an operating handle 10, a connecting rod 11, an upright post 12, a detachable pressing disc 2, a through hole 21, a drill bit inserting hole 22, an end face positioning circular truncated cone 23, a central hole positioning circular truncated cone 24, a wear-resistant shaft sleeve 25, a communication hole 26, a pressing block 3 and a locking nut 4.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 and 2, the annular piston drilling fixture for the engineering machinery comprises an annular horizontal chassis 1, wherein the center of the horizontal chassis 1 is connected with an upright post 12 through a plurality of connecting rods 11, the outer wall of the upper end of the upright post 12 is provided with external threads, the horizontal chassis 1 is connected with the connecting rods 11 in a welding manner, and the upright post 12 is connected with the connecting rods 11 in a welding manner. The structural strength is ensured, and secondly, the axial lead of the upright post 12 is coincident with the axial lead of the horizontal chassis 1.

The upper end of the upright post 12 extends out to the upper end surface of the horizontal chassis 1.

As shown in fig. 1-6, the device further comprises a detachable pressing disc 2, a through hole 21 for the upright post 12 to be inserted into is arranged in the center of the detachable pressing disc 2, a pressing block 3 is sleeved at the upper end of the upright post 12, and the pressing block 3 is a U-shaped insert block. And a locking nut 4 in threaded connection with the external thread, wherein the detachable pressing disc 2 is sleeved on the stand column 12, the detachable pressing disc 2 is positioned below the pressing block 3, a plurality of drill bit stretching holes 22 which are uniformly distributed on the circumference are formed in the detachable pressing disc 2, the lower surface of the detachable pressing disc 2 is connected with an end face positioning circular table 23 which is propped against the inner end face of the annular piston, communication holes 26 which correspond to the drill bit stretching holes 22 one to one are formed in the end face positioning circular table 23, and a center hole positioning circular table 24 which is connected to the lower end of the end face positioning circular table 23 and is inserted into the annular piston. The through hole 21 penetrates through the end face positioning round platform 23 and the central hole positioning round platform 24 downwards.

When the unprocessed annular piston is actually installed and fixed, the side, with the inner end face, of the annular piston faces upwards and is sleeved into the stand column, the annular piston is placed on the horizontal chassis 1, the detachable pressing disc 2 is sleeved on the stand column at the moment, the lower end face of the end face positioning circular truncated cone 23 abuts against the inner end face of the annular piston, the central hole positioning circular truncated cone 24 is inserted into an inner hole of the annular piston, the two are in clearance fit, then the pressing block 3 is inserted, the locking nut 4 is locked, drilling operation can be carried out, and coaxiality of the annular piston and a machining hole is ensured.

In order to facilitate the adjustment of drilling at different angles, an operating handle 10 is connected to the outer wall of the horizontal chassis 1 so as to facilitate the holding operation of the position of different holes to align the drill bit.

Further, a wear-resistant bushing 25 is installed in the drill insertion hole 22. The wear-resistant sleeve 25 is a quenching sleeve which avoids damage to the detachable compact disc 2 due to the drill bit contacting the wall of the drill bit access hole.

Secondly, the upper end face of the wear-resistant shaft sleeve 25 is flush with the upper end face of the detachable pressing disc 2, and the lower end face of the wear-resistant shaft sleeve 25 is flush with the lower end face of the detachable pressing disc 2.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The annular piston drilling clamp for the engineering machinery is characterized by comprising a circular horizontal chassis (1), wherein a stand column (12) is connected to the center of the horizontal chassis (1) through a plurality of connecting rods (11), an external thread is arranged on the outer wall of the upper end of the stand column (12), a detachable pressing disc (2) is further included, a through hole (21) for the stand column (12) to be inserted into is formed in the center of the detachable pressing disc (2), a pressing block (3) is sleeved on the upper end of the stand column (12), a locking nut (4) in threaded connection with the external thread is arranged on the upper end of the stand column (12), the detachable pressing disc (2) is sleeved on the stand column (12), the detachable pressing disc (2) is located below the pressing block (3), a plurality of drill bit stretching holes (22) which are uniformly distributed in the circumference are formed in the detachable pressing disc (2), and an end face positioning circular truncated cone (23) which abuts against, the end face positioning round platform (23) is provided with communicating holes (26) which correspond to the drill bit inserting holes (22) one by one, a central hole positioning round platform (24) which is connected to the lower end of the end face positioning round platform (23) and is inserted into the annular piston, and the through hole (21) penetrates through the end face positioning round platform (23) and the central hole positioning round platform (24) downwards.

2. The annular piston boring grab of claim 1, wherein a wear sleeve (25) is installed in the bore (22).

3. The annular piston drilling clamp for the engineering machinery as claimed in claim 2, wherein the upper end face of the wear-resistant shaft sleeve (25) is flush with the upper end face of the detachable pressing disc (2), and the lower end face of the wear-resistant shaft sleeve (25) is flush with the lower end face of the detachable pressing disc (2).

4. The annular piston boring jig for construction machinery according to claim 1, wherein the pressing block (3) is a U-shaped insert block.