CN205733030U - A kind of hoop groove processing cutter - Google Patents

Abstract

The utility model discloses a circumferential groove processing tool, which comprises a handle 1 and a blade 7. The handle 1 adopts a cubic structure, and one end of the handle 1 is provided with a stepped surface for installing the blade 7. The cross-sectional shape of the blade 7 is convex. Shaped, the bottom of the blade 7 fits the step surface of the handle 1, and the two sides of the middle of the blade 7 are respectively provided with included angles, the range of the included angle on one side is 90°～95°, and the range of the included angle on the other side is 100° ~115°; the utility model prolongs the service life of the cutter by designing the configuration of the blade 7, and overcomes the problem that the traditional cutter is easy to wear; through the cooperation of the handle 1 and the blade 7, the stability and reliability of the cutter are ensured, and the The problem of poor stability of the traditional cutting tool; by setting the cutting edge reasonably, the structural optimization of the cutting tool is realized, which makes up for the defect of high production cost of the traditional cutting tool.

Description

A cutting tool for machining circular grooves

technical field

The utility model relates to a cutting tool for processing circumferential grooves, which is suitable for processing circumferential grooves on conical surfaces and complex revolving bodies, and belongs to the technical field of machining cutting tools.

Background technique

Circumferential grooves are a very common profile of workpieces in machining. When machining circular grooves on ordinary cylindrical surfaces, grooving tools can usually be used to process them. However, when machining circumferential grooves on a conical surface or a complex revolving body, if the section of the circumferential groove is not perpendicular to the axis of the revolving body, but perpendicular to the generatrix of the conical surface or the profile of the revolving body, it is difficult for standard tools to Realize the machining of circumferential grooves.

In order to realize the above-mentioned special circumferential groove processing, the conventional method is to use a five-axis linkage machining center on an ordinary machine tool to process. This method can realize the above-mentioned special circumferential groove of the workpiece in one clamping. Grooving, however, this method has higher requirements on the cutting tools for circumferential grooves, and the traditional cutting tools for circumferential grooves are difficult to meet the requirements.

In the prior art, conventional circumferential groove processing tools mainly have the following problems:

First, the tool is easy to wear and has a high degree of wear and tear, and the processing cycle of the circumferential groove is long.

Second, the stability of the tool is relatively poor, the machining process of the circumferential groove is relatively complicated, and the production efficiency is low.

Third, the production cost of cutting tools is relatively high, and after mass production, the difference is relatively large.

Utility model content

The technical problem of the utility model is: to overcome the deficiencies of the prior art, the utility model provides a circumferential groove processing tool, by designing the configuration of the blade, the service life of the tool is prolonged, and the traditional tool is easily The problem of wear and tear; through the cooperation of the handle and the blade, the stability and reliability of the tool is ensured, which solves the problem of poor stability of the traditional tool; through the reasonable setting of the cutting edge, the structure optimization of the tool is realized, which makes up for the production cost of the traditional tool higher defect.

The technical solution of the utility model is:

A circumferential groove processing tool, including a handle and a blade, the handle adopts a cubic structure, one end of the handle is provided with a stepped surface for installing the blade, the cross-sectional shape of the blade is convex, and the bottom of the blade is in contact with the stepped surface of the handle Together, the two sides of the middle of the blade are respectively provided with included angles, the range of included angles on one side is 90°-95°, and the range of included angles on the other side is 100°-115°.

In the aforementioned circumferential groove machining tool, the top of the cutting edge is provided with a main cutting edge for machining the bottom surface of the circumferential groove.

The two sides of the middle part of the cutting edge are respectively provided with a first secondary cutting edge and a second secondary cutting edge for processing the side of the circumferential groove.

The two ends of the top of the cutting edge are respectively provided with a first cutting edge and a second cutting edge for processing rounded corners on the side of the circumferential groove.

The length ratio of the main cutting edge to the first secondary cutting edge is 1:1.89.

The thickness ratio of the main cutting edge and the first secondary cutting edge is 1:1.01.

The first secondary cutting edge and the second secondary cutting edge have the same length.

The first secondary cutting edge and the second secondary cutting edge have the same thickness.

The number of steps on the step surface of the handle is not less than 2.

The volume ratio of handle to blade should not exceed 400:1.

The beneficial effects of the utility model compared with the prior art are:

1. The utility model prolongs the service life of the cutter by designing the configuration of the blade, and overcomes the problem that the traditional cutter is easy to wear.

2. The utility model ensures the stability and reliability of the knife through the cooperation of the knife handle and the knife edge, and solves the problem of poor stability of the traditional knife.

3. The utility model realizes the structural optimization of the cutting tool by rationally setting the cutting edge, and makes up for the defect of high production cost of the traditional cutting tool.

4. The main cutting edge, the first auxiliary cutting edge and the second auxiliary cutting edge of the utility model are all located on the same plane, which is easy to observe and adjust, and shortens the processing cycle of the circumferential groove.

5. The first tool tip and the second tool tip of the utility model efficiently process rounded corners on the side of the circumferential groove, which simplifies the machining process of the circumferential groove and improves production efficiency.

6. The knife handle and blade of the utility model are universal and convenient, easy to manufacture, and have good consistency after mass production.

7. The step surface of the handle of the utility model can flexibly set the number of steps according to the actual situation, and has the characteristics of wide application range.

Description of drawings

Fig. 1 is a side view of the utility model

Fig. 2 is the structural diagram of the utility model

Fig. 3 is a schematic diagram of the work of the utility model

Among them: 1 handle; 2 main cutting edge; 3 first tip; 4 first secondary cutting edge; 5 second secondary cutting edge; 6 second tool tip; 7 cutting edge;

detailed description

Below in conjunction with description of drawings and specific embodiments, the utility model is further described:

As shown in Figure 1-3, a circumferential groove processing tool includes a handle 1 and a blade 7. The handle 1 adopts a cubic structure, and one end of the handle 1 is provided with a stepped surface for installing the blade 7. The cross section of the blade 7 The shape is convex, the bottom of the blade 7 fits the step surface of the handle 1, and the two sides of the middle of the blade 7 are respectively provided with an included angle. It is 100°～115°.

The top of the blade 7 is provided with a main cutting edge 2 for processing the bottom surface of the circumferential groove, and the right and left sides of the middle of the blade 7 are respectively provided with a first secondary cutting edge 4 and a second secondary cutting edge for processing the side of the circumferential groove 5.

The two ends of the top of the cutting edge 7 are respectively provided with a first cutting edge 3 and a second cutting edge 6 for processing rounded corners on the side of the circumferential groove.

The length ratio of the main cutting edge 2 and the first minor cutting edge 4 is 1:1.89, preferably, the length of the main cutting edge 2 is set to 10 mm.

The thickness ratio of the main cutting edge 2 and the first minor cutting edge 4 is 1:1.01, preferably, the thickness of the main cutting edge 2 is set to 0.01 mm.

The first minor cutting edge 4 and the second minor cutting edge 5 have the same length.

The first minor cutting edge 4 and the second minor cutting edge 5 have the same thickness.

Preferably, the number of steps on the step surface of the handle 1 is 2, the volume ratio of the handle 1 to the blade 7 is 400:1, the material of the handle 1 is 45# steel (forging), and the material of the blade 7 is cubic nitrogen Boronization, the joint between the handle 1 and the blade 7 needs to be sand blasted, then brazed, and tempered after welding.

The cutting surface of the main cutting edge 2, the cutting surface of the first secondary cutting edge 4 and the cutting surface of the second secondary cutting edge 5 are the same plane, which forms a plane with the plane where the main cutting edge 2 and the first secondary cutting edge 4 are located. Cutting fit angle, the range of cutting fit angle is 2°～5°.

The departure surface of the main cutting edge 2, the departure surface of the first auxiliary cutting edge 4, and the departure surface of the second auxiliary cutting edge 5 form a departure matching angle with the plane where the main cutting edge 2 and the first auxiliary cutting edge 4 are located. The angle ranges from 2° to 5°.

The working principle of the utility model is:

Install the parts to be processed on the rotary platform of the CNC vertical lathe, use the pressure plate to pre-tighten the parts through bolts, and then install the tool handle 1 on the frame, align the tool datum, and process the size according to the circumferential groove Carry out NC programming and process parts:

First processing:

The first tool tip 3 is in contact with the surface of the part, and moves into the groove from the starting point of the outer surface arc, the main cutting edge 2 starts cutting, the first secondary cutting edge 4 corrects the side of the groove, and the first tool tip 3 processes the The included angle between the bottom surface of the groove and the side surface of the groove, the main cutting edge 2 processes part of the bottom surface of the groove, and the first tool tip 3 and the first secondary cutting edge 4 process the side surface and rounded corners of the groove.

Second processing:

The second tool tip 6 is in contact with the surface of the part, and moves into the groove from the starting point of the outer surface arc, the main cutting edge 2 starts cutting, the second secondary cutting edge 5 corrects the side of the groove, and the second tool tip 6 processes the The included angle between the bottom surface of the groove and the side surface of the groove, the main cutting edge 2 processes part of the bottom surface of the groove, and the second tool tip 6 and the second secondary cutting edge 5 process the side surface and rounded corners of the groove.

Processing is complete.

The content not described in detail in the specification of the utility model is the well-known technology of those skilled in the art.

Claims (10)

1. A cutting tool for machining circumferential grooves, characterized in that: it comprises a handle (1) and a blade (7), the handle (1) adopts a cube structure, and one end of the handle (1) is provided with a blade (7) for mounting The step surface of the blade (7) is a convex shape, the bottom of the blade (7) fits the step surface of the handle (1), the two sides of the middle of the blade (7) are respectively provided with angles, and the angle on one side is The range of the angle is 90°～95°, and the range of the included angle on the other side is 100°～115°. 2. A cutting tool for machining circumferential grooves according to claim 1, characterized in that: the top of the cutting edge (7) is provided with a main cutting edge (2) for machining the bottom surface of the circumferential groove. 3. A cutting tool for machining circumferential grooves according to claim 2, characterized in that: the two sides of the middle part of the cutting edge (7) are respectively provided with first secondary cutting edges (4) for machining the side surfaces of the circumferential grooves ) and the second secondary cutting edge (5). 4. A kind of circumferential groove machining tool according to claim 3, characterized in that: the two ends of the top of the blade (7) are respectively provided with a first tool tip ( 3) and the second tip (6). 5. A tool for machining circumferential grooves according to claim 3, characterized in that: the length ratio of the main cutting edge (2) to the first minor cutting edge (4) is 1:1.89. 6. A tool for machining circumferential grooves according to claim 5, characterized in that: the thickness ratio of the main cutting edge (2) and the first minor cutting edge (4) is 1:1.01. 7. A cutting tool for machining circumferential grooves according to claim 3, characterized in that: the lengths of the first minor cutting edge (4) and the second minor cutting edge (5) are the same. 8. A cutting tool for machining circumferential grooves according to claim 7, characterized in that: the first minor cutting edge (4) and the second minor cutting edge (5) have the same thickness. 9. A cutting tool for machining circumferential grooves according to claim 3, characterized in that the number of steps on the step surface of the tool handle (1) is not less than 2. 10. A tool for machining circumferential grooves according to claim 3, characterized in that: the volume ratio of the tool handle (1) to the cutting edge (7) does not exceed 400:1.