CN219521105U

CN219521105U - Flexible adjustable single-point type rolling tool for rolling inner walls of multistage holes

Info

Publication number: CN219521105U
Application number: CN202320187766.XU
Authority: CN
Inventors: 张婕; 杜建华; 熊卫民; 王震球
Original assignee: Wuxi Weifu High Technology Group Co Ltd
Current assignee: Wuxi Weifu High Technology Group Co Ltd
Priority date: 2023-02-10
Filing date: 2023-02-10
Publication date: 2023-08-15
Anticipated expiration: 2033-02-10

Abstract

The utility model relates to a flexible adjustable single-point rolling multistage hole inner wall rolling tool. The utility model comprises a cutter bar, wherein the cutter bar can axially feed along the inner hole of a machined workpiece and rotate around the axis of the inner hole of the machined workpiece, and an accommodating hole is formed in the cutter bar along the radial inclined direction of the cutter bar; the rolling cutter comprises a base body in clearance fit with the accommodating hole and a pressure head which is arranged at one end of the base body and protrudes out of the surface of the cutter bar, and the pressure head is in contact with the inner wall of the inner hole of the machined workpiece; the fixing piece is used for fixing the base body in the accommodating hole. According to the utility model, the range of the pressing head protruding out of the surface of the cutter bar can be adjusted through the fixing piece, the range of the size of the inner hole of the workable workpiece can be flexibly adjusted, and the radial section of the rolling cutter and the cutter bar are obliquely arranged, so that the rolling cutter can process steps of the step hole. The utility model has simple structure, is suitable for various, small-batch and trial production, reduces the processing cost and improves the processing efficiency.

Description

Flexible adjustable single-point type rolling tool for rolling inner walls of multistage holes

Technical Field

The utility model relates to the technical field of rolling tools, in particular to a flexible adjustable single-point rolling multistage hole inner wall rolling tool.

Background

The rolling processing is a chipless processing, a certain pressure is applied to the surface of a workpiece through a rolling tool assembly, so that plastic flow is generated on the surface metal of the workpiece, and the surface roughness of the material is improved through material extrusion micro-deformation. Conventional rolling tools are generally used for machining the outer circle of a workpiece. The existing rolling tool for the inner hole is mostly cylindrical, has a complex structure, is only suitable for large aperture, has small application range and lower production efficiency, and increases cost.

Disclosure of Invention

In order to solve the technical problems, the utility model provides the flexible adjustable single-point rolling multistage hole inner wall rolling tool which can be suitable for different apertures, improves the multistage hole efficiency of a machined part and improves the hole wall roughness.

In order to solve the technical problems, the utility model provides a flexible adjustable single-point rolling multistage hole inner wall rolling tool, which comprises:

the cutter bar can axially feed along the inner hole of the machined workpiece and rotate around the axis of the inner hole of the machined workpiece, and an accommodating hole is formed in the cutter bar in a direction inclined to the radial direction of the cutter bar;

the rolling cutter comprises a base body in clearance fit with the accommodating hole and a pressure head which is arranged at one end of the base body and protrudes out of the surface of the cutter bar, and the pressure head is in contact with the inner wall of the inner hole of the machined workpiece;

the fixing piece is used for fixing the base body in the accommodating hole.

In one embodiment of the utility model, a connecting plane parallel to the axis of the accommodating hole is arranged at the bottom end of the cutter bar, a fixing hole communicated with the accommodating hole is arranged in the normal direction of the connecting plane, and the fixing piece passes through the fixing hole and abuts against the side end of the base body.

In one embodiment of the utility model, the base comprises a cylindrical rod and a cone extending from one end of the cylindrical rod, the end of the cone is provided with a groove, and the pressure head is in interference fit with the groove.

In one embodiment of the utility model, the cone is formed with a bottom generatrix along the axial section of the cutter bar parallel to the radial section of the cutter bar.

In one embodiment of the utility model, the central axis of the base body is 60 ° to the radial cross-section of the tool bar, and the cone angle of the cone is 60 °.

In one embodiment of the present utility model, the shape of the ram exposed at one end of the cone is spherical.

In one embodiment of the utility model, the indenter is made of diamond material.

In one embodiment of the utility model, the fixing comprises a bolt or screw.

Compared with the prior art, the technical scheme of the utility model has the following advantages:

according to the flexible adjustable single-point rolling multistage hole inner wall rolling tool, the range of the pressing head protruding out of the surface of the cutter bar can be adjusted through the fixing piece, the range of the inner hole size of a workable piece can be flexibly adjusted, and the rolling cutter and the cutter bar are obliquely arranged in radial section, so that steps of a step hole can be machined. The utility model has simple structure, is suitable for various, small-batch and trial production, reduces the processing cost and improves the processing efficiency.

Drawings

In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings.

FIG. 1 is a schematic view of the overall structure of a flexible adjustable single-point rolling multistage hole inner wall rolling tool according to the present utility model.

FIG. 2 is a schematic side view of a flexible adjustable single-point rolling multistage hole inner wall rolling tool according to the present utility model.

Description of the specification reference numerals: 100. a cutter bar; 110. an accommodation hole; 120. a connection plane; 130. a fixing hole; 200. machining an inner hole of a workpiece; 300. a rolling cutter; 310. a base; 311. a cylindrical rod; 312. a cone; 313. a bottom bus; 320. a pressure head; 400. and a fixing piece.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the utility model and practice it.

In the present utility model, if directions (up, down, left, right, front and rear) are described, they are merely for convenience of description of the technical solution of the present utility model, and do not indicate or imply that the technical features must be in a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the present utility model, "a plurality of" means one or more, and "a plurality of" means two or more, and "greater than", "less than", "exceeding", etc. are understood to not include the present number; "above", "below", "within" and the like are understood to include this number. In the description of the present utility model, the description of "first" and "second" if any is used solely for the purpose of distinguishing between technical features and not necessarily for the purpose of indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the present utility model, unless clearly defined otherwise, terms such as "disposed," "mounted," "connected," and the like should be construed broadly and may be connected directly or indirectly through an intermediate medium, for example; the connecting device can be fixedly connected, detachably connected and integrally formed; can be mechanically connected, electrically connected or capable of communicating with each other; may be a communication between two elements or an interaction between two elements. The specific meaning of the words in the utility model can be reasonably determined by a person skilled in the art in combination with the specific content of the technical solution.

Referring to fig. 1 to 2, a flexible adjustable single-point rolling multistage hole inner wall rolling tool of the present utility model comprises:

the tool bar 100, the tool bar 100 can axially feed along the inner hole 200 of the machined workpiece and rotate around the axis of the inner hole 200 of the machined workpiece, and the tool bar 100 is provided with a containing hole 110 along the radial inclined direction with the tool bar 100;

the rolling cutter 300 comprises a base body 310 in clearance fit with the accommodating hole 110 and a pressing head 320 arranged at one end of the base body 310 and protruding out of the surface of the cutter bar 100, wherein the pressing head 320 is in contact with the inner wall of the inner hole 200 of the machined workpiece;

a fixing member 400, wherein the fixing member 400 is used for fixing the base 310 in the accommodating hole 110.

Through the arrangement, the range of the pressing head 320 protruding from the surface of the cutter bar 100 can be adjusted through the fixing piece 400, the range of the size of the inner hole 200 of the workable workpiece can be flexibly adjusted, and the radial section of the rolling cutter 300 and the cutter bar 100 are obliquely arranged, so that the rolling cutter can process steps of the step hole.

Specifically, a connection plane 120 parallel to the axis of the accommodating hole 110 is disposed at the bottom end of the tool bar 100, a fixing hole 130 communicating with the accommodating hole 110 is disposed in the normal direction of the connection plane 120, and the fixing member 400 passes through the fixing hole 130 and abuts against the side end of the base 310. In this embodiment, the fixing member 400 includes a bolt or a screw.

Specifically, the base 310 includes a cylindrical rod 311 and a cone 312 extending from one end of the cylindrical rod 311, a groove is formed at the end of the cone 312, and the pressing head 320 is in interference fit with the groove. The interference fit between the pressing head 320 and the groove improves the reliability of the connection between the pressing head 320 and the substrate 310

Specifically, the bottom generatrix 313 of the cone 312 formed along the axial section of the cutter bar 100 is parallel to the radial section of the cutter bar 100, and the shape of the ram 320 exposed at one end of the cone 312 is spherical, so that the ram 320 exposed at one end of the cone 312 is convenient to contact with the step plane of the step hole. In this embodiment, the central axis of the base 310 is 60 ° with respect to the radial cross section of the tool bar 100, and the cone angle of the cone 312 is 60 °.

Specifically, the ram 320 is formed of a hard metal material, preferably a diamond material. The natural diamond material not only greatly prolongs the service life, but also is beneficial to rolling the iron casting with uneven hardness of the material or the defects of air holes, sand holes and the like on the rolled surface.

The rolling tool of the utility model is applicable to machine tools such as general lathes, milling machines and the like, the cutter bar 100 is firstly arranged on a cutter frame of the machine tool, the range of the pressure head 320 protruding out of the surface of the cutter bar 100 is adjusted according to the size of the inner hole 200 of a machined workpiece, the cutter bar 100 is driven by the machine tool to move into the inner hole 200 of the machined workpiece, the pressure head 320 of the rolling tool 300 is contacted with the inner wall of the inner hole 200 of the machined workpiece, the rolling amount is controlled by a driving mechanism of the machine tool, a certain pressure is applied to the inner hole 200 of the machined workpiece by the pressure head 320, when the cutter bar 100 rotates, the pressure head 320 produces rolling action on the hole surface, so that plastic flow is generated on the surface metal of the workpiece, micro deformation is generated by material extrusion, and the surface roughness of the material is improved.

Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same, and although the present utility model has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present utility model without departing from the spirit and scope of the technical solution of the present utility model, and all such modifications and equivalents are intended to be encompassed in the scope of the claims of the present utility model.

Claims

1. A flexible, adjustable single-point rolling multistage hole inner wall rolling tool, comprising:

the cutter bar (100), the cutter bar (100) can axially feed along the inner hole (200) of the machined workpiece and rotate around the axis of the inner hole (200) of the machined workpiece, and the cutter bar (100) is provided with a containing hole (110) along the radial inclined direction with the cutter bar (100);

the rolling cutter (300) comprises a base body (310) in clearance fit with the accommodating hole (110) and a pressing head (320) arranged at one end of the base body (310) and protruding out of the surface of the cutter bar (100), wherein the pressing head (320) is in contact with the inner wall of the inner hole (200) of the machined workpiece;

and the fixing piece (400) is used for fixing the base body (310) in the accommodating hole (110).

2. The flexible and adjustable single-point rolling multistage hole inner wall rolling tool according to claim 1, wherein a connecting plane (120) parallel to the axis of the accommodating hole (110) is arranged at the bottom end of the cutter bar (100), a fixing hole (130) communicated with the accommodating hole (110) is arranged in the normal direction of the connecting plane (120), and the fixing piece (400) passes through the fixing hole (130) and abuts against the side end of the base body (310).

3. The flexible and adjustable single-point rolling multistage hole inner wall rolling tool according to claim 1, wherein the base body (310) comprises a cylindrical rod (311) and a cone (312) extending from one end of the cylindrical rod (311), a groove is formed in the end of the cone (312), and the pressing head (320) is in interference fit with the groove.

4. A flexible adjustable single point rolling multistage hole inner wall rolling tool as claimed in claim 3, wherein the cone (312) is formed with a bottom generatrix (313) along the axial section of the tool bar (100) parallel to the radial section of the tool bar (100).

5. The flexible adjustable single point rolling multistage hole inner wall rolling tool as claimed in claim 4, wherein the central axis of the base body (310) is 60 degrees from the radial cross section of the cutter bar (100), and the cone angle of the cone (312) is 60 degrees.

6. A flexible, adjustable single point rolling multistage hole inner wall rolling tool as claimed in claim 3, wherein the shape of the end of the ram (320) exposed to the cone (312) is spherical.

7. A flexible, adjustable single point rolling multistage hole inner wall rolling tool as claimed in claim 1, wherein the ram (320) is made of diamond material.

8. A flexible adjustable single point rolling multistage hole inner wall rolling tool as claimed in claim 1, wherein the fixing member (400) comprises a bolt or a screw.