CN111037454A

CN111037454A - Honing cutter with self-shrinking emery stick

Info

Publication number: CN111037454A
Application number: CN201911367096.4A
Authority: CN
Inventors: 石惠林; 常慧明
Original assignee: Suzhou Xinneng Precise Machinery Co ltd
Current assignee: Suzhou Xinneng Precise Machinery Co ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-04-21

Abstract

The invention relates to a honing cutter with self-shrinking abrasive bars, which comprises a main rod, a push rod and a grinding assembly, wherein the push rod slides along the length direction of the main rod and is arranged on the inner periphery of the main rod, the grinding assembly is in contact with the inner surface of a hole to be machined for honing, the grinding assembly comprises a plurality of cutter seats which are uniformly distributed along the circumferential direction and can slide along the radial direction of the main rod, and a plurality of abrasive bars are respectively arranged on the outer surface of each cutter seat, a pushing cone part is formed at the front part of the push rod, and a first transmission structure and a second transmission structure are formed between the pushing cone part and each cutter seat and tend to drive each cutter seat to be away from; through the setting of first transmission structure and second transmission structure, not only can drive the sand bar through the push rod forward motion and outwards expand, can also drive the shrink in the sand bar through the push rod backward motion, break away from the contact with the downthehole surface to avoid when moving back the sword because of the sand bar that can not contract and the sand bar that leads to and downthehole surface friction produce the quality problems of slide mark.

Description

Honing cutter with self-shrinking emery stick

Technical Field

The invention relates to a honing tool for self-shrinking sand bars.

Background

Honing refers to finishing of a finish surface with a whetstone (also called honing stick or emery stick) mounted on a honing bar. The contact area between the honing and the hole surface is large, various cylindrical holes with the diameter of 5-500 mm or even larger are mainly processed, and the ratio of the hole depth to the hole diameter can reach 10 times or more. When small holes with small diameters are machined, the honing cutter is correspondingly small, a push rod in the general honing cutter cannot be designed into a mode of being clamped with a honing main shaft ejector rod due to the small diameter, all the sand strips are driven to retract and be separated from contact with the hole surface in a mode that the push rod is withdrawn, and therefore when the honing cutter is withdrawn from the hole, the sand strips on the honing cutter are always in contact with the hole surface, the hole surface can be scratched, and the quality problem is caused when the hole surface generates sliding marks.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a honing tool with a self-shrinking emery stick.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

the utility model provides a honing cutter that emery stick shrinked by oneself, honing cutter includes the mobile jib, the gliding push rod of locating the mobile jib internal periphery of length direction of following the mobile jib, with the grinding subassembly of the downthehole surface contact honing of treating processing, the grinding subassembly includes along circumferencial direction evenly distributed and along a plurality of blade holders that the mobile jib can be gliding, locate a plurality of emery sticks of each blade holder surface respectively, the front portion of push rod is formed with and pushes away the pyramis, it tends to drive the first drive structure that each blade holder kept away from each other to push away to be formed with between pyramis and each blade holder, tend to drive the second drive structure that each blade holder closed each other, slide forward when the push rod, the push rod drives each blade holder through first drive structure and keeps away from each other, slide backward when the push rod, the push rod drives each blade.

Preferably, the second transmission structure includes a plurality of driving medium of connection respectively between pushing away pyramis and each blade holder, the driving medium with push away pyramis relatively fixed, and slide with the blade holder cooperation, slide backward when the push rod, each driving medium is followed and is pushed away pyramis rearward movement, each driving medium can pull each blade holder and draw close along the radial slip of mobile jib.

Preferably, the tool apron is provided with a sliding hole, the transmission member is a strip-shaped member, one end of the strip-shaped transmission member is fixedly connected with the pushing cone portion, and the other end of the transmission member is slidably inserted into the sliding hole.

Preferably, an included angle is formed between the length extending direction of the long-strip-shaped transmission part and the length extending direction of the main rod, and the included angle faces the side of the rear end of the main rod.

Preferably, the driving member is made of a rigid metal rod, the pushing cone portion is provided with a fixing hole, and one end portion of the metal rod is inserted into the fixing hole and is tightly matched with the fixing hole.

Preferably, the first transmission structure comprises a first transmission conical surface formed on the pushing conical part and a first inclined surface formed on each tool apron and matched with the first transmission conical surface.

Preferably, the first transmission structure further includes a second transmission conical surface formed on the pushing conical portion, and a second inclined surface formed on each tool apron and disposed to match with the second transmission conical surface.

Preferably, the transmission member is located between the first transmission conical surface and the second transmission conical surface in the length direction of the post rod.

Preferably, the honing tool further includes a driving structure tending to drive the push rod to slide rearward.

Preferably, a first abutting surface is formed on the main rod, a second abutting surface is formed at the rear part of the push rod, the driving structure comprises an elastic part sleeved on the outer circumferential surface of the rear side of the push rod, and two ends of the elastic part abut between the first abutting surface and the second abutting surface.

Due to the implementation of the technical scheme, compared with the prior art, the invention has the following advantages:

according to the honing tool with the self-contraction sand bars, due to the arrangement of the first transmission structure and the second transmission structure, the sand bars can be driven to expand outwards by the forward movement of the push rod, and can also be driven to contract inwards by the backward movement of the push rod and be separated from the inner surface of the hole, so that the quality problem that the sand bars are rubbed with the inner surface of the hole to generate sliding marks due to the fact that the sand bars cannot contract is avoided when the tool is withdrawn, the product is prevented from being scrapped, and the product quality is improved.

Drawings

Figure 1 is a schematic cross-sectional view of the honing tool of this invention in its entirety;

FIG. 2 is a schematic cross-sectional view of the boom of the present invention;

FIG. 3 is a side view of the tool holder of the present invention;

FIG. 4 is a side view of the putter of the present invention;

wherein: 1. a main rod; 101. a first abutting surface; 2. a push rod; 20. a connecting handle; 201. a second interference surface; 21. pushing the cone part; 210. a fixing hole; 211. a first transmission conical surface; 212. a second transmission conical surface; 3. a tool apron; 30. sand strip; 310. a slide hole; 311. a first inclined plane; 312. a second inclined plane; 40. a transmission member; 50. an elastic member.

Detailed Description

The invention is described in further detail below with reference to the figures and specific examples.

The front and the back are defined according to the real life habits, namely, the side of the honing tool provided with the sand strip is the front, and the side of the honing tool butted with the main shaft is the back.

As shown in fig. 1 to 4, a honing tool with self-retracting emery sticks 30 comprises a main rod 1, a push rod 2 sliding along the length direction of the main rod 1 and arranged on the inner periphery of the main rod 1, and a grinding assembly in contact with the inner surface of a hole to be processed for honing, wherein the grinding assembly comprises a plurality of tool holders 3 uniformly distributed along the circumference direction and capable of sliding along the radial direction of the main rod 1, and a plurality of emery sticks 30 respectively arranged on the outer surfaces of the tool holders 3, a push cone portion 21 is formed at the front part of the push rod 2, a first transmission structure tending to drive the tool holders 3 to be away from each other and a second transmission structure tending to drive the tool holders 3 to be close to each other are formed between the push cone portion 21 and the tool holders 3, when the push rod 2 slides forwards, the push rod 2 drives the cutter holders 3 to move away from each other through the first transmission structure, when the push rod 2 slides backwards, the push rod 2 drives the tool holders 3 to approach each other through the second transmission structure.

Specifically, the first transmission structure includes a first transmission tapered surface 211 formed on the pushing tapered portion 21, and a first inclined surface 311 formed on each tool holder 3 and disposed to cooperate with the first transmission tapered surface 211. In addition, the first transmission structure further includes a second transmission conical surface 212 formed on the pushing cone portion 21, and a second inclined surface 312 formed on each tool holder 3 and disposed to cooperate with the second transmission conical surface 212. The cooperation of the two sets of transmission conical surfaces and the inclined surfaces makes the tool apron 3 and the sand bars 30 more stable when expanding outwards.

Further, the second transmission structure includes a plurality of transmission members 40 (which are formed by long rigid metal rods and the transmission members 40 are located between the first transmission conical surface 211 and the second transmission conical surface 212 in the length direction of the post rod) respectively connected between the pushing conical portion 21 and each tool apron 3, a fixing hole 210 is formed in the pushing conical portion 21, a sliding hole 310 is formed in the tool apron 3, one end portion of the transmission member 40 is inserted into the fixing hole 210 and is tightly fitted with the fixing hole 210, and the other end portion of the transmission member is slidably inserted into the sliding hole 310. An included angle (the included angle is 15 °) is formed between the length extending direction of each strip-shaped transmission member 40 and the length extending direction of the main rod 1, and the included angle faces the rear end side of the main rod 1.

When the push rod 2 slides backwards, each transmission piece 40 moves backwards along with the pushing cone part 21, and the transmission pieces 40 are matched with the sliding holes 310 in an inclined mode to convert the force of the backward movement of the transmission pieces into the force of the tool apron 3 sliding along the radial direction of the main rod 1, so that each tool apron 3 is pulled to slide along the radial direction of the main rod 1 to approach, namely, the sand bars 30 retract and can be separated from the contact with the inner surface of the processed hole.

In this example, the honing tool also includes a driving structure that tends to drive the push rod 2 to slide backward. The rear part of the primary rod 1 has increased inner and outer diameters, and thus forms a step with the front part thereof, i.e. a first interference surface 101,

the rear portion of push rod 2 is provided with detachable connection handle 20 and is used for contradicting the butt joint with the ejector pin in the main shaft, is formed with the step between this connection handle 20 and the push rod 2, is formed with second conflict face 201 promptly, drives the structure and includes that the cover establishes the elastic component 50 on the push rod 2 rear side periphery, and the both ends of elastic component 50 are contradicted between first conflict face 101 and second conflict face 201. When the hole of the workpiece is honed in place and ready for tool withdrawal, the ejector rod in the main shaft retracts, the pushing of the push rod 2 is released, the elastic piece 50 starts to push the push rod 2 to move backwards, and the push rod 2 automatically withdraws.

In conclusion, the honing tool for the self-contraction of the sand strips, provided by the invention, has the advantages that through the arrangement of the first transmission structure and the second transmission structure, the sand strips can be driven to expand outwards through the forward movement of the push rod, and can also be driven to contract inwards through the backward movement of the push rod, so that the honing tool is separated from the inner surface of the hole, the quality problem that the sand strips are rubbed with the inner surface of the hole to generate sliding marks due to the fact that the sand strips cannot contract is avoided when the tool is withdrawn, the product is prevented from being scrapped, and the product quality is improved.

The present invention has been described in detail in order to enable those skilled in the art to understand the invention and to practice it, and it is not intended to limit the scope of the invention, and all equivalent changes and modifications made according to the spirit of the present invention should be covered by the present invention.

Claims

1. The utility model provides a honing tool that emery stick shrank, honing tool includes the mobile jib, follows the gliding locating of length direction of mobile jib the internal peripheral push rod of mobile jib, with the grinding subassembly of the downthehole surface contact honing of treating processing, grinding subassembly includes along circumferencial direction evenly distributed and follows the mobile jib can be radial gliding a plurality of blade holders, locate respectively each a plurality of emery sticks of blade holder surface, its characterized in that: the front part of the push rod is provided with a push cone part, a first transmission structure tending to drive the tool holders to be away from each other and a second transmission structure tending to drive the tool holders to be close to each other are formed between the push cone part and the tool holders, when the push rod slides forwards, the push rod drives the tool holders to be away from each other through the first transmission structure, and when the push rod slides backwards, the push rod drives the tool holders to be close to each other through the second transmission structure.

2. The stick-retraction honing tool as set forth in claim 1 wherein: the second transmission structure comprises a plurality of transmission pieces which are respectively connected between the pushing cone part and the tool holders, the transmission pieces are relatively fixed with the pushing cone part and slide in a matched mode with the tool holders, when the push rod slides backwards, the transmission pieces move backwards along with the pushing cone part, and the transmission pieces can pull the tool holders to slide and approach along the radial direction of the main rod.

3. The stick-retraction honing tool as set forth in claim 2 wherein: the tool apron is provided with a sliding hole, the transmission part is a long strip-shaped part, one end of the long strip-shaped transmission part is fixedly connected with the pushing pyramid part, and the other end of the transmission part is slidably inserted into the sliding hole.

4. The stick-retraction honing tool as set forth in claim 3 wherein: an included angle is formed between the length extending direction of the long-strip-shaped transmission part and the length extending direction of the main rod, and the included angle faces the rear end side of the main rod.

5. The stick-retraction honing tool as set forth in claim 4 wherein: the transmission part is composed of a rigid metal rod, a fixing hole is formed in the pushing cone part, and one end part of the metal rod is inserted into the fixing hole and is tightly matched with the fixing hole.

6. The stick-retraction honing tool as set forth in claim 2 wherein: the first transmission structure comprises a first transmission conical surface formed on the pushing conical part and first inclined surfaces formed on the tool holders and matched with the first transmission conical surfaces.

7. The stick-retraction honing tool as set forth in claim 6 wherein: the first transmission structure further comprises a second transmission conical surface formed on the pushing conical part and second inclined surfaces formed on the tool holders and matched with the second transmission conical surfaces.

8. The stick-retraction honing tool as set forth in claim 7 wherein: the transmission part is located between the first transmission conical surface and the second transmission conical surface in the length direction of the post rod.

9. The stick-retraction honing tool as set forth in claim 1 wherein: the honing tool also includes a drive structure that tends to drive the push rod to slide rearward.

10. The stick-retraction honing tool as set forth in claim 9 wherein: be formed with first conflict face on the mobile jib, the push rod rear portion has the second conflict face, it establishes to drive the structure including the cover elastic component on the push rod rear side periphery, the both ends conflict of elastic component is in between first conflict face and the second conflict face.