CN107199793B

CN107199793B - Marking device

Info

Publication number: CN107199793B
Application number: CN201710521576.6A
Authority: CN
Inventors: 丛建臣; 王丰奎; 周大刚; 夏永平; 宋文友
Original assignee: Tianrun Industrial Technology Co ltd
Current assignee: Tianrun Industrial Technology Co ltd
Priority date: 2017-06-30
Filing date: 2017-06-30
Publication date: 2022-09-09
Anticipated expiration: 2037-06-30
Also published as: CN107199793A

Abstract

The invention provides a marking device, which solves the technical problem that the existing marking device cannot directly mark the inner side of the arm of a crankshaft. The loading device is provided with a V-shaped block, the bottom of the V-shaped block is provided with a sleeve, the rear end of the sleeve is provided with a positioning plate, and a loading rod is inserted in the sleeve; the sleeve is provided with a punch hole, the outer side of the punch hole is provided with a guide sleeve, the guide sleeve and the punch hole are internally provided with a punch, the outer end of the punch is provided with a step, the step is provided with a spring, and the guide sleeve is provided with a spring fixing device. The invention can be widely applied to the marking technology on mechanical parts.

Description

Marking device

Technical Field

The invention relates to a marking device, in particular to a marking device capable of marking the inner side of a crankshaft.

Background

It is known that for the assembly of parts of an automobile engine, it is necessary to mark somewhere on some parts, some crankshaft parts requiring a diameter inside the arm

The small taper hole mark can not be directly formed by punching by hands and a punch due to the limited available operating space, and no suitable device is available in the market or in the industry.

Disclosure of Invention

The invention aims to solve the technical problem that the conventional marking device cannot directly mark the inner side of the crank arm, and provides the marking device which is simple in structure, convenient to operate, good in forming effect and capable of directly marking the inner side of the crank arm.

Therefore, the loading device is provided with a V-shaped block, the bottom of the V-shaped block is provided with a sleeve, the rear end of the sleeve is provided with a positioning plate, and a loading rod is inserted in the sleeve; the sleeve is provided with a punch hole, a guide sleeve is arranged outside the punch hole, a punch is arranged in the guide sleeve and the punch hole, the front end of the loading rod is an inclined plane, the inclined plane is in contact with the rear end of the punch, the outer end of the punch is provided with a step, the step is provided with a spring, and the guide sleeve is provided with a spring fixing device.

Preferably, one side of the sleeve is provided with a first screw hole which penetrates through the wall of the sleeve, and a limit screw is arranged in the first screw hole.

Preferably, the loading rod is provided with a keyway that mates with the limit screw.

Preferably, the sleeve is provided with a second screw hole, the second screw hole is arranged at a position opposite to the punch, and an adjusting screw is arranged in the second screw hole.

Preferably, the locating plate is provided with a round sleeve, T-shaped plates are symmetrically arranged on two sides of the round sleeve, and the inner diameter of the round sleeve is fixedly connected with the sleeve.

Preferably, the T-shaped plate is provided with a jaw.

Preferably, the spring fixing device is a cover with a hole in the middle, and the inner diameter of the cover is smaller than that of the guide sleeve.

The invention has the advantages that the V-shaped block, the positioning plate and the adjusting screw are arranged, the V-shaped block leans against the surface of the connecting rod neck of the crankshaft, the positioning plate is provided with the T-shaped plate with the clamping jaw, the device can be fixed between the arms of the crankshaft, the adjusting screw can keep a certain distance between the sleeve and the inner wall of the crankshaft, and the sleeve cannot move backwards under the reaction force formed by the impact force of the punch 4, thereby ensuring the forming of the tapered hole. The loading rod is further arranged, in the process that the inclined plane at the front end of the loading rod pushes the punch to operate, the limiting screw limits the moving distance of the loading rod, and the front end inclined plane is prevented from being in contact with the ball to form self-locking. And the conical hole is formed, and under the combined action of the guide sleeve, the cover and the spring, when the loading rod is withdrawn, the punch is withdrawn, so that the surface of the inner wall of the crankshaft can not be scratched.

Drawings

FIG. 1 is a schematic front view of an embodiment of the present invention;

FIG. 2 is a schematic left side view of an embodiment of the present invention;

FIG. 3 is a view from A-A in FIG. 2;

FIG. 4 is a view from B-B in FIG. 2;

fig. 5 is a view from C-C in fig. 2.

The symbols in the drawings illustrate that:

a V-shaped block; 2. a crankshaft; 3. a sleeve; 4. punching; 5. a cover; 6. positioning a plate; 7. a loading rod; 8. a guide sleeve; 9. a spring; 10. an adjusting screw; 11. a limit screw; 12. a round sleeve; a T-shaped plate; 14. a claw is provided.

Detailed Description

The present invention will be further described with reference to the following examples.

As shown in figures 1-4, the invention comprises a V-shaped block 1, a sleeve 3 is welded at the bottom of the V-shaped block 1, and a loading rod 7 is arranged in the middle of the sleeve 3.

A guide sleeve 8 is welded on the sleeve 3 at a position opposite to the adjusting screw 10, a punch 4 is installed in the guide sleeve 8, a step is arranged on the outer side of the punch 4, and a spring 9 is installed on the step. The guide sleeve 8 is connected with a cover 5 through a common screw, and the cover 5 compresses the spring 9 at the end of the guide sleeve 8. One side of the sleeve 3 is provided with two screw holes, namely a first screw hole and a second screw hole, the second screw hole is arranged at a position opposite to the guide sleeve 8, an adjusting screw 10 is arranged in the second screw hole, and a limiting screw 11 is arranged in the first screw hole.

The rear end of the sleeve 3 is also welded with a positioning plate 6, as shown in fig. 5, the positioning plate 6 is formed by welding a round sleeve 12 and two T-shaped plates 13 provided with claws 14, the inner hole of the round sleeve 12 is welded and fixed with the sleeve 3, and the claws 14 at the two ends of the positioning plate 6 can be ensured to be clamped into the two sides of the arm of the crankshaft 2.

The front end of the loading rod 7 is an inclined plane, and the middle part of the loading rod is provided with a key slot matched with the limit screw 11. The loading rod 7 is inserted into the sleeve 3, the inclined surface is in spherical point contact with the rear end of the punch 4, the limit screw 11 is screwed into the key groove through the thread arranged on the sleeve 3, the moving distance of the loading rod 7 is limited, and the front end inclined surface is prevented from being in contact with the spherical surface to form self-locking. The V-shaped block 1 leans against the surface of a connecting rod neck of the crankshaft 2, meanwhile, two claws 14 of the positioning plate 6 are aligned to two sides of arms of the crankshaft 2 and loaded at the rear end of the loading rod 7, the inclined plane at the front end of the loading rod 7 pushes the punch 4, the spring 9 is compressed, the tip of the punch 4 is punched into one side of the inner wall of the crankshaft 2, and then a conical hole meeting the process requirements is punched. When the loading rod 7 is withdrawn, the punch 4 is withdrawn under the action of the spring 9, and the tip of the punch 4 can not scratch the inner wall surface of the crankshaft 2.

The adjusting screw 10 is screwed into the screw hole of the sleeve 3, so that the sleeve 3 can keep a certain distance with the inner wall of the crankshaft 2, and the sleeve 3 cannot move backwards under the action of the reaction force formed by the impact force of the punch 4, thereby further ensuring the forming of the tapered hole.

However, the above description is only exemplary of the present invention, and the scope of the present invention should not be limited thereby, and the replacement of the equivalent components or the equivalent changes and modifications made according to the protection scope of the present invention should be covered by the claims of the present invention.

Claims

1. A marking device is characterized by being provided with a V-shaped block, wherein the bottom of the V-shaped block is provided with a sleeve, the rear end of the sleeve is provided with a positioning plate, and a loading rod is inserted into the sleeve; the loading device comprises a sleeve, and is characterized in that a punch hole is formed in the sleeve, a guide sleeve is arranged on the outer side of the punch hole, a punch is arranged in the guide sleeve and the punch hole, the front end of the loading rod is an inclined plane, the inclined plane is in contact with the rear end of the punch, a step is arranged at the outer end of the punch, a spring is arranged on the step, and a spring fixing device is arranged on the guide sleeve.

2. The marking device of claim 1, wherein a first threaded hole is formed in one side of the sleeve, the first threaded hole penetrates through a wall of the sleeve, and a limit screw is disposed in the first threaded hole.

3. The marking device of claim 2, wherein the load bar is provided with a keyway that mates with the limit screw.

4. The marking device according to claim 1 or 3, wherein the sleeve is provided with a second screw hole, the second screw hole is provided at a position opposite to the punch, and an adjusting screw is provided in the second screw hole.

5. The marking device according to claim 4, wherein the positioning plate is provided with a round sleeve, T-shaped plates are symmetrically arranged on two sides of the round sleeve, and the inner diameter of the round sleeve is fixedly connected with the sleeve.

6. The marking device of claim 5, wherein the tee plate is provided with a pawl.

7. The marking device of claim 6, wherein the spring fixing device is arranged outside the guide sleeve, the spring fixing device is a cover provided with a hole in the middle, and the inner diameter of the cover is smaller than that of the guide sleeve.