CN217018652U

CN217018652U - High-rigidity adjustable inner hole finish machining cutter bar and cutter

Info

Publication number: CN217018652U
Application number: CN202122574917.0U
Authority: CN
Inventors: 周理根; 张俊青; 张海斌
Original assignee: Zhengzhou Diamond Precision Manufacturing Co Ltd
Current assignee: Zhengzhou Diamond Precision Manufacturing Co Ltd
Priority date: 2021-10-26
Filing date: 2021-10-26
Publication date: 2022-07-22
Anticipated expiration: 2031-10-26

Abstract

The utility model belongs to the technical field of hole machining tools, and particularly relates to a high-rigidity adjustable inner hole finish machining tool bar and a tool, which comprise a tool bar body, wherein a tool clamping hole extending along the radial direction is formed in the tool bar body, the tool bar body is also provided with an adjusting hole communicated with the end part of the tool clamping hole and a clamping hole communicated with the inner wall of the tool clamping hole, the adjusting hole and the clamping hole are respectively provided with an internal thread for assembling a corresponding screw, and through arrangement of the internal threads, on one hand, the tool can be conveniently replaced, on the other hand, the radial cutting range of the tool can be conveniently adjusted, and the tool bar and the tool have the characteristics of convenience in adjustment and high machining precision.

Description

Inner hole finish machining cutter bar and cutter with adjustable high rigidity

Technical Field

The utility model belongs to the technical field of hole machining tools, and particularly relates to a high-rigidity adjustable inner hole finish machining tool bar and a tool.

Background

In the existing tool for processing the step deep hole, a single-edge multi-step tool bar is generally adopted to assemble a tool bit, and the precision of the processed hole is controlled through the tool precision. The traditional cutter design adopts common steel as a cutter body, but the requirement of a high-precision hole cannot be met due to the large aperture and the rigidity and the strength of the cutter bar. For example, the prior art patent document No. 2018105598452 provides a stepped hole machining tool, a stepped tool body is provided with a plurality of cutting edges, and the radial dimension of the stepped hole of a workpiece cannot be adjusted.

SUMMERY OF THE UTILITY MODEL

The utility model provides a high-rigidity adjustable inner hole finish machining cutter bar and a cutter, and aims to solve the problem that the machining precision is uncontrollable when the conventional cutter machines a deep hole.

The utility model discloses a high-rigidity adjustable inner hole finish machining cutter bar, which adopts the following technical scheme:

the high-rigidity adjustable inner hole finish machining cutter bar comprises a cutter bar body, wherein a cutter clamping hole extending along the radial direction is formed in the cutter bar body, the cutter bar body is further provided with an adjusting hole communicated with the end portion of the cutter clamping hole and a clamping hole communicated with the inner wall of the cutter clamping hole, and internal threads used for assembling corresponding screws are formed in the adjusting hole and the clamping hole.

As an improvement, threaded sleeves used for being matched with corresponding screw threads are arranged in the adjusting holes and the clamping holes.

As an improvement, the extending direction of the adjusting hole is consistent with the extending direction of the cutter clamping hole.

As a refinement, the direction of extension of the clamping hole is perpendicular to the clamping knife hole.

As an improvement, a chip groove is formed in the position, close to the cutter clamping hole, of the cutter bar body.

As an improvement, a plurality of cutter clamping holes are formed in the cutter bar body at intervals along the axial direction, and the adjusting holes and the clamping holes are correspondingly formed in the corresponding cutter clamping holes one by one.

As an improvement, the number of the cutter clamping holes is 3, the cutter clamping holes are distributed at intervals along the axial direction, and the adjusting holes and the clamping holes are correspondingly arranged at the corresponding cutter clamping holes one by one.

As an improvement, the cutter bar body is of a stepped shaft structure, the stepped shaft structure comprises a first working part and a second working part, the radial size of the first working part and the radial size of the second working part are reduced, and the first working part and the second working part are both provided with cutter clamping holes.

As an improvement, the cutter bar body is of a hard alloy bar structure.

The utility model has the beneficial effects that:

the utility model provides a high-rigidity adjustable inner hole finish machining cutter bar which comprises a cutter bar body, wherein a cutter clamping hole extending along the radial direction is formed in the cutter bar body, the cutter bar body is also provided with an adjusting hole communicated with the end part of the cutter clamping hole and a clamping hole communicated with the inner wall of the cutter clamping hole, internal threads used for assembling corresponding screws are arranged in the adjusting hole and the clamping hole, and through arrangement of the internal threads, on one hand, the cutter blade can be conveniently replaced, on the other hand, the radial cutting range of the cutter blade can be conveniently adjusted, and the high-rigidity adjustable inner hole finish machining cutter bar has the characteristics of convenience in adjustment and high machining precision.

The inner hole finish machining tool adopts the following technical scheme: the utility model provides an inner hole finish machining cutter, includes the cutter arbor, the technical scheme of cutter arbor is the same with the technical scheme of the adjustable inner hole finish machining cutter arbor of above-mentioned high rigidity, no longer gives unnecessary details, press from both sides and be provided with the blade in the sword hole, be equipped with in the regulation hole with the back of a knife regulation cooperation of blade and then carry out the adjusting screw of radial regulation to the blade, press from both sides and be equipped with in the hole and be used for pressing from both sides the blade and press from both sides the clamping screw in the sword hole.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of an embodiment of an internal bore finishing tool of the present invention;

FIG. 2 is a right side view of FIG. 1;

FIG. 3 is a schematic view of the clamping and adjustment of the blade of the inner bore finishing tool of the present invention;

reference numerals:

1. the cutter bar comprises a cutter bar body 11, a first working part 12, a second working part 13, a cutter clamping hole 2, a threaded sleeve 3, an adjusting hole 31, an adjusting screw 4, a cutter blade 5, a clamping hole 51, a clamping screw 6 and a chip groove.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanying figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many different forms than those herein described and the skilled artisan may make similar modifications without departing from the spirit of the utility model and, therefore, the utility model is not limited by the embodiments of the substrate disclosed below.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for illustrative purposes only and do not represent a unique embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The embodiment of the utility model relates to a high-rigidity adjustable inner hole finish machining cutter bar, which comprises a cutter bar body 1, wherein a cutter clamping hole 13 extending along the radial direction is formed in the cutter bar body 1, the cutter bar body 1 is further provided with an adjusting hole 3 communicated with the end part of the cutter clamping hole 13 and a clamping hole 5 communicated with the inner wall of the cutter clamping hole 13, and the adjusting hole 3 and the clamping hole 5 are respectively provided with an internal thread for assembling a corresponding screw, as shown in figures 1 to 3.

In order to facilitate processing, threaded sleeves 2 used for being matched with corresponding screw threads are arranged in the adjusting holes 3 and the clamping holes 5, specifically, the threaded sleeves 2 are arranged in the adjusting holes 3 and the clamping holes in a brazing mode, the embedded threaded sleeves 2 are adopted, the threaded sleeves 2 are made of common steel, the threaded sleeves 2 can be processed firstly, then the brazed threaded sleeves 2 are brazed, the manufacturability is good, a brazing structure is adopted, the deformation of the cutter bar is small in the processing process, and the cutter clamping holes 13 in all positions of the cutter bar can be processed firstly.

In order to enable the corresponding adjusting screw 31 to conveniently and flexibly radially adjust the blade 4, the extending direction of the adjusting hole 3 is consistent with the extending direction of the cutter clamping hole 13; specifically, the end face of the adjusting screw 31 contacts with the back of the blade 4 to push the blade 4 to realize radial adjustment; in other embodiments, the assembling direction of the adjusting screw 31 may have a certain included angle with the extending direction of the insert clamping hole 13, and an inclined surface with an adapted included angle is processed at the end of the adjusting screw 31 according to requirements.

In the present embodiment, the extension direction of the clamping hole 5 is perpendicular to the insert clamping hole 13, and the perpendicular arrangement can provide more stable clamping force.

The cutter bar body 1 is provided with a chip groove 6 at the position close to the cutter clamping hole 13.

The cutter bar body 1 of the embodiment is of a stepped shaft structure, the stepped shaft structure comprises a first working part 11 and a second working part 12, the radial size of the first working part and the radial size of the second working part are reduced along the direction away from a connecting handle part of a machine tool, and cutter clamping holes 13 are formed in the first working part 11 and the second working part 12; the number of the cutter clamping holes 13 is 3, the cutter clamping holes 13 are distributed at intervals along the axial direction, the adjusting holes 3 and the clamping holes 5 are uniformly and correspondingly arranged at the positions of the corresponding cutter clamping holes 13, specifically, the first working part 11 is provided with 1 cutter clamping hole 13, the second working part 12 is provided with 2 cutter clamping holes 13, and the adjusting holes 3 and the clamping holes 5 are uniformly and correspondingly arranged at the positions of the corresponding cutter clamping holes 13; in other embodiments of the present invention, the number of the clamping knife holes 13 can be adjusted according to the shape of the stepped hole of the workpiece, and can be 2 or 4.

The cutter bar body 1 is of a hard alloy bar structure, the hardness reaches HRC65-70, the cutter bar has high wear resistance, the alloy cutter body has high deformation resistance, and the cutter has high rigidity.

The utility model provides an embodiment of an inner hole finish machining tool. As shown in fig. 1 to 3, an inner hole finishing tool includes a tool bar, the specific embodiment of the tool bar is the same as the above-mentioned high-rigidity adjustable inner hole finishing tool bar, and is not repeated, a blade is disposed in a tool clamping hole, an adjusting screw which is adjusted and matched with a back of the blade to adjust the blade radially is disposed in the adjusting hole, and a clamping screw for clamping the blade in the tool clamping hole is disposed in the clamping hole.

The cutter that this embodiment provided simple structure, cutter manufacturing manufacturability is better, and great slenderness ratio can be realized to the length of cutter, and manufacturing cost is lower, can reduce cutter cost for the customer.

The length L of the cutter is determined according to the depth of the hole of the processed workpiece and a certain space allowance, and the diameters D1, D2 and D3 of the cutter are determined according to the diameter of the hole of the processed workpiece. L1 and L2 are determined according to the step difference of the holes to be machined, L3 is the cutting head reference length, L4 is the handle flattening length, d is the handle diameter, the tool bar body 1 is of an alloy structure, and the tool bar body is fixed on a machine tool through the handle d and flattening. The outer diameters D1, D2 and D3 can meet the requirement of 0.003 precision. The hole positional relationships L1, L2 are ensured by the manufacturing accuracy.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is specific and detailed, but not to be understood as limiting the scope of the present invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the utility model, and these changes and modifications are all within the scope of the utility model. Therefore, the protection scope of the present patent should be subject to the appended claims.

Claims

1. The high-rigidity adjustable inner hole finish machining cutter bar comprises a cutter bar body and is characterized in that a cutter clamping hole extending along the radial direction is formed in the cutter bar body, the cutter bar body is further provided with an adjusting hole communicated with the end portion of the cutter clamping hole and a clamping hole communicated with the inner wall of the cutter clamping hole, and internal threads used for assembling corresponding screws are formed in the adjusting hole and the clamping hole.

2. The high rigidity adjustable internal bore finishing tool bar as claimed in claim 1, wherein said adjusting and clamping holes have threaded sleeves for threaded engagement with respective screws.

3. The high rigidity adjustable internal bore finishing tool bar as claimed in claim 1, wherein the extension direction of said adjustment hole coincides with the extension direction of said holder hole.

4. The high rigidity adjustable internal bore finishing tool bar of claim 1, wherein said clamping bore extends in a direction perpendicular to said clamping bore.

5. The high rigidity adjustable internal bore finishing tool bar as claimed in claim 1, wherein said tool bar body is provided with chip flutes at locations adjacent to said tool clamping holes.

6. The high-rigidity adjustable inner hole finish machining tool bar as claimed in any one of claims 1 to 5, wherein a plurality of tool clamping holes are formed in the tool bar body at intervals along an axial direction, and the adjusting holes and the clamping holes are correspondingly formed in the corresponding tool clamping holes one by one.

7. The high-rigidity adjustable inner hole finish machining tool bar as claimed in claim 6, wherein the number of the tool clamping holes is 3, the tool clamping holes are axially distributed at intervals, and the adjusting holes and the clamping holes are correspondingly arranged at the corresponding tool clamping holes one by one.

8. The high-rigidity adjustable inner hole finish machining tool bar as claimed in any one of claims 1 to 5, wherein the tool bar body is of a stepped shaft structure, the stepped shaft structure comprises a first working portion and a second working portion, the size of the first working portion and the size of the second working portion are reduced along a radial direction away from a connecting handle portion of a machine tool, and tool clamping holes are formed in the first working portion and the second working portion.

9. The high rigidity adjustable internal bore finishing tool bar according to any one of claims 1 to 5, wherein the tool bar body is of a cemented carbide bar structure.

10. A tool for finishing inner bores, comprising a tool holder, wherein the tool holder is a high-rigidity adjustable tool holder for finishing inner bores according to any one of claims 1 to 9, wherein an insert is arranged in the tool-holding bore, wherein an adjusting screw is arranged in the adjusting bore for adjusting the back of the insert, thereby radially adjusting the insert, and wherein a clamping screw is arranged in the clamping bore for clamping the insert in the tool-holding bore.