CN115446334B

CN115446334B - Method for turning groove on hard alloy

Info

Publication number: CN115446334B
Application number: CN202211398527.5A
Authority: CN
Inventors: 邓先成; 林枫; 季科; 马克林; 吴冲
Original assignee: Chengdu Hehong Technology Co ltd
Current assignee: Chengdu Hehong Technology Co ltd
Priority date: 2022-11-09
Filing date: 2022-11-09
Publication date: 2023-03-17
Anticipated expiration: 2042-11-09
Also published as: CN115446334A

Abstract

The invention provides a method for turning a groove by hard alloy, wherein the groove is turned by using a round-head turning tool, the diameter of the selected round-head turning tool is smaller than 1/2 of the groove to be processed, and different depths of the groove to be processed are fed to the groove to be processed at different positions in the width direction of the hard alloy substitute processing groove by using the round-head turning tool, so that the groove is turned. Because the cutting edge surface of the round-head turning tool is a circular arc and does not have a sharp corner, the contact between the right-angle end of the cutter and a point of a workpiece is changed into the contact between a line and a line, the cutting edge is firmer, the risk of breakage of the cutting edge is reduced, the protection effect on the cutter is achieved, and the production cost is reduced. Meanwhile, the depth of the round-head lathe tool in the depth direction of the groove to be processed is greater than the depth of a cutter made of the same material, so that the groove processing efficiency is improved, and the production speed is increased.

Description

Method for turning groove on hard alloy

Technical Field

The invention relates to the technical field of turning, in particular to a method for turning a groove on a hard alloy lathe.

Background

When a groove with a right-angle groove bottom needs to be machined on a hard alloy, in the prior art, a right-angle cutter is generally used for directly machining the groove. However, the hardness of the hard alloy is high, so that the quality of the cutter is particularly dependent on the quality of the cutter in the machining process. However, even if a high-quality cutter is used, the amount of feed of the cutter in the depth direction of the groove to be processed is still limited, which affects the processing efficiency, and the cutter is not suitable for mass production and demanding production tasks. On the other hand, the right-angled end of the cutter is in point-to-point contact with the processing surface during groove processing, the cutter is very easy to break, and the cost of the cutter is high, so that the processing cost is increased.

Disclosure of Invention

The invention aims to provide a method for turning a groove by using hard alloy, which aims to improve the efficiency of turning the groove and reduce the cost.

The embodiment of the invention is realized by the following technical scheme:

a method of lathing a groove in cemented carbide comprising the steps of:

s1, clamping a workpiece on a lathe;

s2, selecting a round-head turning tool;

s3, starting the lathe to drive the workpiece to rotate;

s4, controlling a round-head lathe tool to feed along the depth direction of the groove to be processed;

s5, retracting the round-head lathe tool along the depth direction of the groove to be processed;

s6, moving the round-head lathe tool for a fixed distance along the width direction of the groove to be processed;

s7, repeating S4-S6 for a plurality of times;

s8, using a round-head lathe tool to level the bottom of the groove to be processed;

and S9, removing the arc angle at the bottom of the groove to be processed by using a cutter.

Further, the round head diameter of the round head lathe tool is smaller than 1/2 of the width of the groove to be processed.

Further, the round-nose tool moves a fixed distance in the width direction of the groove to be processed every time S6 is repeated in S7.

Further, the depth of the round-nose tool in the depth direction of the groove to be processed is different every time S5 is repeated in S7.

Further, in S7, the end point of the previous cutting stroke in the width direction of the groove to be processed is the start point of the next cutting stroke.

Furthermore, a first curve is formed on the cross-sectional view of the workpiece by the machined surface which completes the previous cutting stroke, and the left and right mirror images of the first curve are second curves formed on the cross-sectional view of the workpiece by the machined surface of the next cutting stroke.

The technical scheme of the embodiment of the invention at least has the following advantages and beneficial effects:

the invention lathes the groove by using the round-head turning tool, the diameter of the selected round-head turning tool is less than 1/2 of that of the groove to be machined, and different depths of feed are carried out on the groove to be machined at different positions of the round-head turning tool in the width direction of the hard alloy substitute machining groove, so that the groove is lathed. Because the cutting edge surface of the round-head turning tool is a circular arc and does not have a sharp corner, the contact between the right-angle end of the cutter and a point of a workpiece is changed into the contact between a line and a line, the cutting edge is firmer, the risk of breakage of the cutting edge is reduced, the protection effect on the cutter is achieved, and the production cost is reduced. Meanwhile, the depth of feed of the round-head lathe tool in the depth direction of the groove to be machined is greater than that of the cutter made of the same material, the efficiency of turning the groove on the hard alloy is improved, and the production speed is increased.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic view of a round-nose tool according to the present invention, shown with a depth of a groove;

FIG. 2 is a schematic view of the feed of the round-nose tool provided by the present invention from left to right along the width of the slot;

FIG. 3 is a schematic view of a round nose tool of the present invention as it is fed from right to left along the width of the slot;

FIG. 4 is a schematic view of a cutter corner cleaning provided by the present invention;

FIG. 5 is a schematic diagram comparing a first curve and a second curve provided by the present invention;

FIG. 6 is a schematic concentric view of a first turning curve and a second turning curve provided by the present invention;

icon: 1-workpiece, 2-round-head lathe tool, 3-groove to be processed, 4-cutter, 5-first curve, 6-second curve, 7-left and right mirror images of the first curve, 8-first turning curve and 9-second turning curve.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 6, a method of lathing a groove in cemented carbide includes the steps of: s1, clamping a workpiece 1 on a lathe; s2, selecting a round-head turning tool 2; s3, starting the lathe to drive the workpiece 1 to rotate; s4, controlling the round-head lathe tool 2 to feed along the depth direction of the groove 3 to be processed; s5, retracting the round-head lathe tool 2 along the depth direction of the groove 3 to be processed; s6, moving the round-head turning tool 2 for a fixed distance along the width direction of the groove 3 to be processed; s7, repeating S4-S6 for a plurality of times; s8, the bottom of the tank 3 to be processed is turned to be flat by using the round-head turning tool 2; and S9, removing the arc angle at the bottom of the groove 3 to be processed by using the cutter 4.

Adopt bulb tool 2 when turning processing groove, change the contact of cutter and work piece 1 for the arc line by the straight line, because the cutting edge face of bulb tool 2 is the circular arc to there is not the closed angle, the blade is more firm, has reduced the risk that the blade bursts out, has played the guard action, has reduced manufacturing cost to the cutter. Meanwhile, the depth of the round-head lathe tool 2 in the depth direction of the groove 3 to be processed can be guaranteed to be larger than that of the cutter 4 made of the same material, the efficiency of turning the groove on the hard alloy is improved, and the production speed is accelerated.

Meanwhile, the sawtooth-shaped cutting scraps generated when the cutter 4 is used for machining the groove in the prior art are easily and directly clamped in the groove 3 to be machined; when using the bulb tool 2 to add man-hour, the circular-arc smear metal of production can tighten up toward the centre owing to the effect of self stress, can carry out better chip removal, eliminates the condition of card bits.

Referring to fig. 2, 3, 5 and 6, the round head diameter of the round head tool is less than 1/2 of the width of the groove to be processed. And in S7, the round-head turning tool moves for different fixed distances along the width direction of the groove to be processed when S6 is repeated each time. By feeding the groove 3 to be processed with different depth of feed in the depth direction at different positions in the width of the groove 3 to be processed.

For example: after one feed from left to right, the next feed is from right to left, and the machined surface after the previous feed stroke forms a first curve 5 on the cross-sectional view of the workpiece 1, and a left and right mirror image 7 of the first curve is a second curve 6 formed on the cross-sectional view of the workpiece 1 by the machined surface of the next feed stroke. Make the blade face of round-head lathe tool 2 all inequality with the contact surface of work piece 1 at every turn with this, guarantee simultaneously through the cooperation of first turning curve 8 and second turning curve 9 with this that the blade face of round-head lathe tool 2 evenly wears in the processing, not only guarantee machining precision and processingquality like this, but also prolonged round-head lathe tool 2's life.

And then, a round-head turning tool 2 is used for flatly turning the bottom of the groove 3 to be processed, and finally, a cutter 4 is used for removing the arc angle at the bottom of the groove 3 to be processed. In the method, the workload of the cutter 4 in the traditional machining method is reduced, the cutter 4 can complete the machining of the right-angle groove only by performing the final corner cleaning operation, the cutter 4 is protected, the possibility of breakage of the right-angle end of the cutter 4 is reduced, and the production cost is reduced.

The present invention has been described in terms of the preferred embodiment, and it is not intended to be limited to the embodiment. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for machining a groove in a hard alloy lathe is characterized by comprising the following steps:

s1, clamping a workpiece (1) on a lathe;

s2, selecting a round-head turning tool (2);

s3, starting the lathe to drive the workpiece (1) to rotate;

s4, controlling the round-head turning tool (2) to feed along the depth direction of the groove (3) to be processed;

s5, retracting the round-head turning tool (2) along the depth direction of the groove (3) to be processed;

s6, moving the round-head turning tool (2) for a fixed distance along the width direction of the groove (3) to be processed;

s7, repeating S4-S6 for a plurality of times;

when S6 is repeated every time in S7, the round-head turning tool (2) moves for different fixed distances along the width direction of the groove (3) to be processed; in the step S7, when the step S5 is repeated each time, the depths of the feed of the round-head turning tool (2) along the depth direction of the groove (3) to be processed are different; in the step S7, the end point of the previous feed stroke in the width direction of the tank (3) to be processed is the start point of the next feed stroke;

simultaneously ensuring that a first curve (5) is formed on the cross section of the workpiece (1) on the machined surface completing the previous cutting travel, wherein the left and right mirror images of the first curve (5) are second curves (6) formed on the cross section of the workpiece (1) on the machined surface completing the next cutting travel;

s8, using the round-head turning tool (2) to turn the bottom of the groove (3) to be processed flat;

s9, removing the arc angle at the bottom of the groove (3) to be processed by using a cutter (4).

2. The method of claim 1, wherein the machining of the groove comprises: the round head diameter of the round head turning tool (2) is smaller than 1/2 of the width of the groove (3) to be processed.