CN211136697U

CN211136697U - Hard alloy die punch polishing protection device

Info

Publication number: CN211136697U
Application number: CN201921696663.6U
Authority: CN
Inventors: 尹江华; 李树强; 钟正军; 谭文清; 袁美和
Original assignee: Oke Precision Cutting Tools Co ltd
Current assignee: Oke Precision Cutting Tools Co ltd
Priority date: 2019-10-11
Filing date: 2019-10-11
Publication date: 2020-07-31
Anticipated expiration: 2029-10-11

Abstract

The utility model relates to a mould polishing technical field discloses a carbide mould drift polishing protection device, establish the sleeve to the drift tip and maintain the locking mechanism that sleeve and drift tip are connected stably including the cover, the sleeve have with the hole of drift tip periphery adaptation. This application simply wraps up the drift tip through the sleeve, sets up simultaneously and sinks the platform hole, makes and sinks mesa and drift terminal surface parallel and level, can ensure that the abrasive paste fully fills to the drift periphery and the small clearance of sleeve hole in when polishing, for the polishing provides favourable supplementary, avoids mould drift sword limit to throw the circle or throw the sawtooth, improves the qualification rate that the drift suppressed the cutter.

Description

Hard alloy die punch polishing protection device

Technical Field

The utility model relates to a mould polishing field specifically, relates to a carbide mould drift polishing protection device.

Background

The surface smoothness of a punch of the die is high, the punch is generally directly polished by a brush after the groove shape of the upper surface of the punch is processed, but the edge of the punch is very easy to be polished to be round and generate saw teeth when the outline edge of the punch groove is polished, the sharp edge shape of a cutter is changed when the cutter is pressed and formed by the die, so that burrs are increased, the use of products is influenced, and the qualification rate is low.

Patent publication No. CN201856164U discloses a polishing jig, which utilizes an adjusting cushion block to expose the surface of a punch to be polished out of the surface of an inner hole fixing sleeve at the upper end by about 0.1mm when the punch is polished, and the polishing mode is equivalent to the cost of large polishing loss of the end surface of the punch, and the polishing jig has a complex structure and is inconvenient to use at any time.

Disclosure of Invention

The utility model provides a technical problem lie in overcoming prior art's defect, provide a carbide mould drift polishing protection device that the structure is simple and easy, polishing effect is good.

The purpose of the utility model is realized through the following technical scheme:

a hard alloy die punch polishing protection device comprises a sleeve sleeved to the end of a punch and a locking mechanism for maintaining the stable connection between the sleeve and the end of the punch, wherein the sleeve is provided with an inner hole matched with the periphery of the end of the punch.

Furthermore, the locking mechanism is a screw, and a threaded hole is formed in the sleeve wall for the locking mechanism to be screwed in until the locking mechanism is abutted to the periphery of the end part of the punch.

Furthermore, a counter sink hole is formed in the inner hole of the sleeve, and the end face of the punch is flush with the counter sink face of the counter sink hole.

Furthermore, the fit clearance between the inner hole of the sleeve and the punch is 0.003-0.02 mm.

Furthermore, the height of the sleeve is 3-30 mm.

Furthermore, the depth of the counter sink hole is 1-10 mm.

Still further, the peripheral size of heavy platform hole than the drift is 0.5 ~ 8 mm.

Furthermore, the wall thickness of the sleeve is 1-20 mm.

Compared with the prior art, the utility model discloses following beneficial effect has:

the end part of the punch is simply wrapped by the sleeve, and meanwhile, the counter sink hole is formed, so that the counter sink surface is flush with the end face of the punch, grinding paste can be fully filled into a small gap between the periphery of the punch and the inner hole of the sleeve during polishing, favorable assistance is provided for polishing, the edge of the punch of the die is prevented from being polished or sawteeth are prevented from being polished, and the qualification rate of the punch pressing tool is improved.

Drawings

Fig. 1 is a schematic structural diagram of a hard alloy die punch polishing protection device according to embodiment 1, which is mounted on a lower punch.

Detailed Description

The invention will be further described with reference to specific embodiments, wherein the drawings are designed solely for the purpose of illustration and not as a definition of the limits of the patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

Example 1

As shown in fig. 1, the present embodiment provides a hard alloy mold punch polishing protection device, which is matched with a lower punch, the protection device comprises a sleeve 2 sleeved on the end of the punch 1 and a locking mechanism 3 for maintaining the sleeve and the end of the punch stably connected, the sleeve 2 has an inner hole matched with the outer periphery of the end of the punch, the outer periphery of the end of the punch is called a punch sliding surface, and the punch sliding surface is matched with the inner hole.

The locking mechanism 3 may have various forms, for example, it may be a screw, as shown in fig. 1, it is only necessary to provide a threaded hole on the sleeve wall of the sleeve 2 for the screw to be screwed in until the screw abuts against the periphery of the end of the punch, and this embodiment is in the form of a screw.

The locking mechanism can also be a hoop, the sleeve is an open sleeve at the moment, the hoop is hooped on the periphery of the sleeve, and the sleeve can be tightly matched with the punch through tightening the hoop.

Specifically, the fit clearance of 2 hole of sleeve and drift 1 is 0.003 ~ 0.02mm, and this small clearance setting makes things convenient for telescopic loading and unloading on the one hand, and on the other hand prevents again that sleeve and drift cooperation from crossing the pine and leading to not playing good polishing protection effect.

The punch head usually needs to be added with grinding paste to assist polishing during polishing, in order to avoid the mixed distribution of the grinding paste between the punch head and the sleeve, the inner hole of the sleeve 2 is preferably provided with the counter sink hole 4, and the end face of the punch head 1 is flush with the counter sink surface 41 of the counter sink hole, so that the grinding paste is distributed on the upper end face of the punch head and the counter sink surface, the problem of grinding paste overflow is avoided, along with the polishing, the grinding paste is fully filled into the gap between the punch head and the inner hole, and the edge of the punch head is further prevented from rounding and being thrown out of sawteeth.

The height of the sleeve 2 is generally designed to be 8-30 mm, the wall thickness is 5-20 mm, the depth of the counter sink hole 4 is correspondingly designed to be 1-10 mm, and the peripheral size of the counter sink hole 4 is 0.5-8 mm larger than that of the punch 1.

When the punch is polished, the sleeve 2 is sleeved on the sliding surface of the punch, the sleeve is screwed into a threaded hole on the side surface of the sleeve by a screw, the sleeve 2 is fastened with the punch 1, grinding paste is injected into the sleeve counter sink hole 4, polishing is carried out by a brush, and finally the punch with excellent polishing effect can be obtained.

It should be understood that the above-mentioned embodiments are only examples for clearly illustrating the technical solutions of the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The polishing protection device for the hard alloy die punch is characterized by comprising a sleeve sleeved to the end part of the punch and a locking mechanism for maintaining the stable connection between the sleeve and the end part of the punch, wherein the sleeve is provided with an inner hole matched with the periphery of the end part of the punch.

2. The hard alloy die punch polishing protection device as claimed in claim 1, wherein the locking mechanism is a screw, and a threaded hole is formed in the sleeve wall for the locking mechanism to be screwed in until the locking mechanism abuts against the outer periphery of the end of the punch.

3. The hard alloy die punch polishing protection device according to claim 1 or 2, wherein a counter sink hole is further formed at the inner hole of the sleeve, and the end face of the punch is flush with the counter sink of the counter sink hole.

4. The hard alloy die punch polishing protection device as claimed in claim 3, wherein the fit clearance between the sleeve inner hole and the punch is 0.003-0.02 mm.

5. The hard alloy die punch buffing protection device of claim 4 wherein the sleeve height is 3 to 30 mm.

6. The hard alloy die punch polishing protection device of claim 5, wherein the counter sink hole depth is 1-10 mm.

7. The hard alloy die punch buffing protection device of claim 6, wherein the counter sink hole is 0.5 to 8mm larger than the punch outer circumference.

8. The hard alloy die punch buffing protection device of claim 1, wherein the sleeve wall thickness is 1 to 20 mm.