Rough machining compound tool

Abstract

The utility model provides a rough machining compound tool, and belongs to the technical field of machinery. The problem that an existing cutter is low in machining efficiency is solved. The rough machining compound tool comprises a columnar body and a tool body fixed to the body, one end of the body is a cylindrical fixed end, the other end of the body is provided with an annular groove, the tool body comprises an inner turning tool and an outer turning tool, the inner turning tool is fixed to the end face, located on the inner side of the groove, of the body, and the outer turning tool is fixed to the end face, located on the inner side of the groove, of the body. The outer turning tool is fixed to the end face, located on the outer side of the groove, of the body. The rough machining compound tool has the advantage of being high in machining efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of machinery and relates to a rough machining composite tool. Background Art

[0002] Machining is the most commonly used processing method for workpieces. It clamps the workpiece, uses a tool, and cooperates with the circumferential rotation of the workpiece or the tool to process the inner and outer surfaces of the workpiece relative to the tool by relying on the tool edge. According to the different processing accuracy, it can be divided into rough processing and fine processing.

[0003] In the rough machining stage of differential housing workpieces, it is necessary to machine the bearing circle, small end face, bearing circle step end face, small inner hole and other positions on the workpiece, and at least two tools are often required. For example, the external turning tool processes the bearing circle, small end face, and bearing circle step end face, while the internal hole turning tool processes the small inner hole. Due to the remaining amount of the blank and other reasons, it is generally necessary to turn twice at the same machining position of the workpiece.

[0004] If the above-mentioned traditional tools are used, it is necessary to perform operations such as tool changing during the rough processing stage of the workpiece, which results in problems such as long processing time and low processing efficiency. Utility Model Content

[0005] The utility model aims to solve the above problems existing in the prior art and propose a rough machining composite tool to solve the problem of low machining efficiency of the prior tool.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A rough machining composite tool comprises a columnar body and a tool fixed on the body, characterized in that one end of the body is a cylindrical fixed end, and the other end of the body has a recessed circular groove, and the tool comprises an inner turning tool and an outer turning tool, the inner turning tool is fixed on the end face of the body located on the inner side of the groove, and the outer turning tool is fixed on the end face of the body located on the outer side of the groove.

[0008] One end of a differential housing workpiece has a cylindrical end to be processed, and the inner hole wall and outer circumference of the end to be processed need to be rough-machined. When the rough machining composite tool is used, the cylindrical fixed end is fixed to the corresponding position on the machine tool, and the differential housing workpiece is fixed on the fixture of the machine tool. The machine tool drives the rough machining composite tool or the workpiece to rotate circumferentially, and the rough machining composite tool is approached to the workpiece. The end of the end to be processed of the workpiece is directly opposite to the groove position of the rough machining composite tool, and the body part inside the groove and the inner turning tool extend into the inner hole of the end to be processed and turn the hole wall, while the body part outside the groove and the outer turning tool are located on the outside of the workpiece and turn the outer circumference of the end to be processed. In this way, the inner hole wall and outer circumference of the end to be processed of the differential housing workpiece can be processed simultaneously in a single operation through the rough machining composite tool, and there is no need to replace the tool separately during the processing, and the processing efficiency is high. Here, the size of the groove and the fixed positions of the inner and outer turning tools are customized based on the size of the actual product that needs to be turned.

[0009] In the above-mentioned rough machining composite tool, the end of the body inside the groove protrudes from the end of the body outside the groove. The axial length of the inner hole wall to be machined of the differential case workpiece is greater than the axial length of the outer circumference to be machined, and the machining is achieved by the protrusion of the end of the body inside the groove.

[0010] In the above-mentioned rough machining composite tool, a facing tool is fixed at the bottom of the groove. The facing tool is used to perform turning machining on the end surface of the workpiece when the end to be machined of the workpiece extends into the groove.

[0011] In the above-mentioned rough machining composite tool, chamfering cutters are fixed on both sides of the bottom of the groove, the two chamfering cutters are arranged opposite to each other, and the cutting edges of the two chamfering cutters are arranged obliquely relative to the axis of the groove. The opposite and obliquely arranged cutting edges on both sides of the bottom of the groove can chamfer the inner and outer sides of the end of the workpiece to be processed extending into the groove.

[0012] In the above rough machining composite tool, the number of the inner turning tool and the number of the outer turning tool are at least two. A larger number of tools can not only improve the turning efficiency, but also reduce the wear of a single tool.

[0013] Compared with the existing technology, the rough machining composite tool combines the tools for turning inner holes, turning outer circles, turning end faces and turning chamfers into one, and the size is designed to match the workpiece, so that all positions of the workpiece can be turned in one feed, with high machining efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the cross-sectional structure of the rough machining composite tool.

[0015] Figure 2 It is a schematic diagram of the cross-sectional structure when the rough machining composite tool is machining a workpiece.

[0016] In the figure, 1, main body; 2, fixed end; 3, connecting column; 4, connecting tube; 5, groove; 6, internal turning tool; 7, external turning tool; 8, end facing tool; 9, chamfering tool; 10, workpiece. DETAILED DESCRIPTION

[0017] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0018] like Figure 1 As shown, the rough machining composite tool comprises a columnar integrated body 1 and a tool fixed on the body 1. One end of the body 1 is a cylindrical fixed end 2, and the other end of the body 1 has a cylindrical connecting column 3 and a cylindrical connecting cylinder 4. The connecting cylinder 4, the connecting column 3 and the fixed end 2 are coaxially arranged and connected as a whole, and the outer diameters of the connecting column 3, the fixed end 2 and the connecting cylinder 4 increase one by one. One end of the connecting column 3 away from the fixed end 2 extends out of the connecting cylinder 4, and a circular groove 5 is formed between the inner side of the connecting cylinder 4 and the outer side of the connecting column 3.

[0019] The tools include a facing tool 8, a chamfering tool 9, an inner turning tool 6 and an outer turning tool 7. Here, the facing tool 8, the chamfering tool 9, the inner turning tool 6 and the outer turning tool 7 are all square blades with cutting edges on all four sides, and their centers can be fixed on the body 1.

[0020] Among them, the inner turning tool 6 is fixed on the end of the connecting column 3 away from the fixed end 2, and the outer turning tool 7 is fixed on the end of the connecting tube 4 away from the fixed end 2. The number of the inner turning tool 6 and the outer turning tool 7 is two, and they are symmetrically arranged on the body 1 with the axis of the body 1 as the center. The end facing tool 8 is fixed on the body 1 at the bottom of the groove 5, and the cutting edge of the end facing tool 8 faces the opening direction of the groove 5, that is, perpendicular to the axis of the body 1. The number of the chamfering tool 9 is two, and they are relatively fixed on both sides near the bottom of the groove 5, and the cutting edges of the two chamfering tools 9 are inclined 30° toward each other. That is, as shown in the orientation shown in the figure, the cutting edge of the chamfering tool 9 located at the bottom is rotated 30° clockwise with the left side as the reference, and the cutting edge of the chamfering tool 9 located at the top is rotated 30° counterclockwise with the left side as the reference, so as to turn the chamfers of the inner and outer sides of the end of the workpiece 10 respectively. Of course, the inclination angle can also be adjusted to 45°, 60°, etc. as needed. The facing tool 8 and the chamfering tool 9 are both close to the bottom of the groove 5 . During actual installation, the installation positions of the two tools can be staggered to avoid interference. Preferably, the two tools are respectively arranged on opposite sides of the connecting column 3 .

[0021] like Figure 2As shown, the differential housing workpiece 10 is hollow inside, and both opposite ends have cylindrical ends to be processed. When the rough machining composite tool is used, the cylindrical fixed end 2 is fixed on the tool clamping position of the machine tool, and the differential housing workpiece 10 is fixed on the fixture of the machine tool. The machine tool drives the rough machining composite tool or the workpiece 10 to rotate circumferentially and makes the rough machining composite tool approach the workpiece 10. Here, the clamping of the tool, the clamping of the workpiece 10, and the operation of the tool and the fixture are all prior art.

[0022] When the rough machining composite tool is fed, the end of the workpiece 10 to be machined is directly opposite to the groove 5 of the rough machining composite tool, then the connecting column 3 and the inner turning tool 6 fixed on the connecting column 3 extend into the inner hole of the end to be machined and turn the hole wall, while the connecting tube 4 and the outer turning tool 7 fixed on the connecting tube 4 are located on the outside of the workpiece 10 and turn the outer circumference of the end to be machined. The end facing tool 8 machines the end face of the workpiece 10, and the chamfering tool 9 machines the chamfers on both the inner and outer sides of the end of the workpiece 10. Here, the dimensions of the connecting column 3, the connecting tube 4 and the groove 5 and the fixed positions of each tool are customized based on the dimensions of the actual workpiece 10 that needs to be turned, to ensure that each tool can accurately machine each position of the workpiece 10.

[0023] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A rough machining composite tool, comprising a columnar body (1) and a tool fixed on the body (1), characterized in that: One end of the body (1) is a cylindrical fixed end (2), and the other end of the body (1) has a recessed groove (5) in the shape of a circular ring. The tool comprises an inner turning tool (6) and an outer turning tool (7). The inner turning tool (6) is fixed on the end surface of the body (1) located on the inner side of the recess (5), and the outer turning tool (7) is fixed on the end surface of the body (1) located on the outer side of the recess (5).

2. A rough machining composite tool according to claim 1, characterized in that: The end of the body (1) inside the groove (5) protrudes from the end of the body (1) outside the groove (5).

3. A rough machining composite tool according to claim 1 or 2, characterized in that: A facing cutter (8) is fixed at the bottom of the groove (5).

4. A rough machining composite tool according to claim 3, characterized in that: Chamfering knives (9) are fixed on both sides of the bottom of the groove (5); the two chamfering knives (9) are arranged opposite to each other and the cutting edges of the two chamfering knives (9) are arranged obliquely relative to the axis of the groove (5).

5. A rough machining composite tool according to claim 1 or 2, characterized in that: The number of the inner turning tool (6) and the number of the outer turning tool (7) are both at least two.

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