CN214393240U - Split type electrode cap coping knife rest - Google Patents

Abstract

The utility model discloses a split type electrode cap coping knife rest, main technical characterized in that: the cutter body seat and the cutter edge main body are connected in an interference fit manner, and the technical effect that the strength is the same as that of the existing multi-edge type electrode cap grinding cutter rest is achieved; and the alpha included angle arranged on the blade body reduces cutting force, does not generate cutting resistance, and eliminates vibration generated by cutting, thereby prolonging the service life, improving the grinding quality of the electrode cap, saving the material of the blade body and reducing the cost.

Description

Split type electrode cap coping knife rest

Technical Field

The utility model relates to a coping knife rest, especially a split type electrode cap coping knife rest.

Background

The resistance welding machine adopts an electrode cap to participate in the welding of metal parts, the electrode cap is used as a vulnerable part, and the failure mainly takes the forms of plastic deformation, surface alloying, recrystallization and adhesion in the welding process, so that the service life of the electrode is reduced. Because the electrode cap is made of copper-based alloy such as pure copper, chromium zirconium copper, silicon nickel copper and the like, the electrode cap is expensive to manufacture and is usually repaired by a coping tool rest and then reused.

The Chinese patent application with the application number of CN202010385041.2 discloses a multi-edge type electrode cap grinding cutter holder, which eliminates vibration generated by cutting by adopting the technical scheme of an integral structure, and obtains the using effect of the electrode cap grinding cutter holder. However, in the actual implementation process, the damaged degree of the repaired electrode cap is different, and the different techniques of the repairer cause the blade in the sharpening tool holder of the electrode cap to be obtuse angle or edge-breaking, so that the condition is usually caused because when the damaged electrode cap with a large degree is repaired, the accumulated burrs accumulated on the electrode cap are large, or the deviation of the axis of the electrode cap is large, and the repairer holds a tool to generate a large feed amount, when the integral sharpening tool holder of the electrode cap generates an obtuse angle or edge-breaking, the sharpening tool holder of the electrode cap needs to be taken out from the tool to be repaired integrally, and if the sharpening tool holder of the electrode cap generates a large notch, the sharpening tool holder of the electrode cap cannot be repaired, and only the new sharpening tool holder of the electrode cap can be replaced. The material of the electrode cap coping tool rest with the integral structure is tungsten carbide hard alloy steel or high-speed steel, and the price is high, so that the cost for repairing the electrode cap is increased.

Because the cutting edge and the side wall of the tool rest of the existing split type electrode cap grinding tool rest are of a linear structure, the cutting force of the cutting edge is increased, and the phenomenon of blade tipping caused by vibration can be generated during grinding, so that the tool set cannot be used.

SUMMERY OF THE UTILITY MODEL

The utility model discloses main the not enough in overcoming above-mentioned technical problem provides a split type electrode cap coping knife rest, through the aforesaid with present multiple-edge type electrode cap coping knife rest components of a whole that can function independently, reduces the manufacturing degree of difficulty to and reduce manufacturing cost, and reduce the cutting force, eliminate the vibration that the cutting produced, thereby improve life, and improve electrode cap coping quality.

In order to overcome the technical problem, the utility model discloses a technical scheme is:

including the blade seat, set up the material of blade seat core portion is the cutting edge main part of tungsten carbide hard alloy steel, its characterized in that: the cutter body seat is provided with a mounting hole penetrating through the flange part, the shaft extension part of the cutter body seat is provided with a stop surface, a guide hole for mounting the cutting edge main body is arranged at the core part of the cutter body seat and penetrates through the upper flat end surface of the flange part of the cutter body seat and the lower end surface of the shaft extension part, and positioning grooves are arrayed on the guide hole at equal angles respectively; the knife edge comprises a knife edge body and a knife edge seat, wherein the upper end and the lower end of the knife edge body are symmetrically provided with a knife head consisting of three knife edge bodies, a gamma included angle is formed between the knife edges of every two adjacent knife edge bodies, a smooth sunken curved surface part is arranged on a rear angle surface in the middle of each knife edge body, a curved secondary knife edge is formed on the rear angle surface by the curved surface part, a notch is respectively arranged at the upper outer contour and the lower outer contour of each knife edge body, a boss is formed on the outer end contour of each knife edge body, the knife edge body is connected with the positioning groove on the guide hole of the knife edge seat into a whole through the boss of each knife edge body in a tolerance fit mode, and the knife edges of the knife edge body form a alpha included angle with the central line of the knife edge seat.

Further, the material of the cutter body seat 1 is high-quality carbon structural steel;

further, the included angle of γ is 120 °.

Further, the included angle a is 10 °.

Further, the boss of the blade body is connected with the positioning groove of the blade body seat in an interference fit manner in tolerance fit.

Compared with the prior art, the beneficial effects of the utility model are that: the manufacturing difficulty is reduced, the cutting force is reduced, the cutting resistance is not generated, and the vibration generated by cutting is eliminated, so that the service life is prolonged, and the grinding quality of the electrode cap is improved.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a front view of the split type electrode cap grinding tool holder of the present invention.

Fig. 2 is a top view of fig. 1.

Fig. 3 is a cross-sectional view taken along line a-a of fig. 1.

Fig. 4 is a partially enlarged view of the region B shown in fig. 3.

Fig. 5 is a front view of the blade body of the present invention.

Fig. 6 is a bottom view of fig. 5.

Fig. 7 is a sectional view taken along line J-J of fig. 5.

Fig. 8 is a perspective view of fig. 1.

Fig. 9 is a perspective view of fig. 5.

Detailed Description

As shown in fig. 1-9, the sharpener comprises a sharpener body base 1, a blade body 2 made of tungsten carbide hard alloy steel is arranged at the core part of the sharpener body base 1, a mounting hole 6 penetrating through a flange part 3 is arranged on the sharpener body base 1, the mounting hole 6 is used for connecting the sharpener body base 1 with a sharpener, a shaft extension part 4 of the sharpener body base 1 is arranged inside the sharpener, a stop surface 5 is arranged on the shaft extension part 4 of the sharpener body base 1, the stop surface 5 is attached to a flat surface inside the sharpener, and when the sharpener works, the sharpener body base 1 and the sharpener do not rotate;

the cutter body seat 1 is also provided with a guide hole 7 for mounting the cutter blade main body 2, the guide hole 7 is arranged in the core part of the cutter body seat 1 and penetrates through the upper flat end surface of the flange part 3 of the cutter body seat 1 and the lower end surface of the shaft extension part 4, and positioning grooves 8 are respectively arrayed on the guide hole 7 at equal angles; the upper end and the lower end of the blade body 2 are symmetrically provided with a tool bit 9 consisting of three blade bodies 10, an included angle gamma is formed between the blades 11 of each adjacent blade body 10, a rear corner face 14 of the middle part of each blade body 10 is provided with a smooth concave curved face part 12, said curved surface portion 12 creates a curved minor cutting edge 13 on said rear corner surface 14, when the electrode cap is polished, the blade 11 cuts accumulated scraps on the electrode cap, the head of the electrode cap is repaired through the curved surface part 12, a smoothly transiting arc-cylindrical electrode cap head is obtained corresponding to said curved surface portion 12 of the smooth concavity, meanwhile, the deviation difference of the axle center of the electrode cap can be corrected through the curved surface part 12, meanwhile, the secondary grinding of the head part of the electrode cap is carried out through the secondary blade 13, and the repaired electrode cap is more perfect, and the repaired electrode cap is easy to obtain higher welding quality during working.

A notch 15 is respectively arranged at the upper outer contour and the lower outer contour of each blade body 10, so that the outer end contour of each blade body 10 forms a boss 16, the blade body 2 is connected with the positioning groove 8 on the guide hole 7 of the blade body seat 1 into a whole through the boss 16 of each blade body 10 in a tolerance fit manner, and the blade 11 of the blade body 10 of the blade body 2 forms an included angle with the central line of the blade body seat 1, wherein the included angle is used for enabling the blade 11 to be sharper, reducing the cutting force and overcoming the uneven cutting force; when the electrode cap is polished, the alpha included angle enables the blade 11 and the repaired electrode cap to be in point contact with each other in sequence to form line contact, then the electrode cap is in surface contact with the curved surface part 12, and vibration and cutting force generated during cutting are offset and decomposed by the alpha included angle, so that vibration generated during cutting is eliminated, and the phenomenon of blade breakage is solved. The cutting edge and the side wall of the cutter rest are of a linear structure in the existing split type electrode cap grinding cutter rest, and an included angle for resisting and decomposing the cutting force of the cutting edge is not set, so that the cutting force cannot be counteracted by the structure, otherwise, the cutting force is increased, the generated cutting vibration is increased, and the phenomenon of blade breakage caused by vibration can be generated during grinding, so that the cutter set cannot be used.

The material of the cutter body seat 1 is high-quality carbon structural steel, and the cutter body seat 1 and the cutting edge main body 2 are assembled and connected into a whole, so that the material of the cutter body seat 1 can be replaced by the high-quality carbon structural steel, the manufacturing cost is reduced, and the manufacturing difficulty is also reduced; more specifically, the material of the cutter body seat 1 is preferably 45 steel in high-quality carbon structural steel, the price is low, the cutter body seat is also convenient to obtain, and after quenching and tempering, the cutter body seat 1 has high strength and excellent toughness and plasticity. Thus, the blade body 2 can be adapted to work under alternating loads when connected to the blade body 2.

The included angle of gamma is 120 degrees, so that the blade bodies 10 are uniformly distributed, the balance of the blade body 2 during rotation is facilitated, and the heat dissipation of the adjacent blade bodies 10 is improved.

The alpha included angle is 10 degrees, the bearing strength of the blade body 10 is reduced when the alpha included angle is too large, the cutting resistance is increased when the alpha included angle is too small, and vibration is easy to generate. Therefore, the included angle a is 10 degrees, which is a reasonable angle value of the utility model.

The lug boss 16 of the cutting edge main body 2 is connected with the positioning groove 8 of the cutter body seat 1 in an interference fit manner in tolerance fit, so that the cutting edge main body 2 and the cutter body seat 1 are firmly connected into a whole.

In order to firmly connect the cutting edge main body 2 and the cutter body seat 1 into a whole, the utility model adopts a cold-pressing assembly process to connect the cutting edge main body 2 and the cutter body seat 1 into a whole in an interference fit way;

the method specifically comprises the following steps: wherein, the first step and the second step are carried out successively;

step one, placing the blade body 2 into a liquid nitrogen box at-196 ℃ for cooling, so that the profile of the blade body 2 is integrally shrunk;

fixing the cutter body seat 1 and an assembly table through a mounting hole 6 of a flange part 3 of the cutter body seat 1;

step three, the notch 15 of the blade body 2 with the overall contracted outline obtained in the step one is placed in a clamping device, so that the boss 16 of the blade body 2 corresponds to the positioning groove 8 of the blade body seat 1;

step four, the blade body 2 and the blade body seat 1 in the state of the step three are connected into a whole by applying pressure to a clamping device, and the boss 16 of the blade body 2 in the state is pressed into the positioning groove 8 of the blade body seat 1;

step five, obtaining a split type electrode cap coping tool rest after the blade body 2 in the step four is at the temperature of 20-25 ℃; the split type electrode cap sharpening tool rest has the same strength as the existing multi-edge type electrode cap sharpening tool rest.

Compared with the existing multi-edge type electrode cap grinding tool rest, the multi-edge type electrode cap grinding tool rest reduces the manufacturing difficulty and the manufacturing cost; compared with the existing split type electrode cap grinding tool rest, the split type electrode cap grinding tool rest reduces cutting force, does not generate cutting resistance, and eliminates vibration generated by cutting, thereby prolonging the service life and improving the grinding quality of the electrode cap.

The present invention is not limited to the precise arrangements described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims (5)

1. The utility model provides a split type electrode cap coping knife rest, includes blade holder (1), sets up the material of blade holder (1) core is cutting edge main part (2) of tungsten carbide hard alloy steel, its characterized in that: the cutter body seat (1) is provided with a mounting hole (6) penetrating through the flange part (3), a shaft extension part (4) of the cutter body seat (1) is provided with a stop surface (5), a guide hole (7) used for mounting the cutter body (2) is arranged at the core part of the cutter body seat (1) and penetrates through the upper flat end surface of the flange part (3) of the cutter body seat (1) and the lower end surface of the shaft extension part (4), and positioning grooves (8) are arrayed on the guide hole (7) at equal angles respectively; the knife edge comprises a knife edge main body (2), wherein the upper end and the lower end of the knife edge main body (2) are symmetrically provided with a knife head (9) consisting of three knife edge bodies (10), a gamma included angle is formed between the knife edges (11) of every two adjacent knife edge bodies (10), a smooth sunken curved surface part (12) is arranged on a rear angle surface (14) in the middle of each knife edge body (10), a curved auxiliary knife edge (13) is formed on the rear angle surface (14) by the curved surface part (12), a notch (15) is respectively arranged at the upper outer contour and the lower outer contour of each knife edge body (10), a boss (16) is formed on the outer end contour of each knife edge body (10), the knife edge main body (2) and the positioning groove (8) on the guide hole (7) of the knife edge body seat (1) are connected into a whole through tolerance fit, and the knife edges (11) of the knife edge bodies (10) of the knife edge main body (2) and the knife edge body seat (1) are connected into a whole through tolerance fit ) The center line of the shaft forms an included angle a.

2. The split type electrode cap sharpening tool holder according to claim 1, wherein: the cutter body seat (1) is made of high-quality carbon structural steel.

3. The split type electrode cap sharpening tool holder according to claim 1, wherein: the included angle of gamma is 120 deg..

4. The split type electrode cap sharpening tool holder according to claim 1, wherein: the angle a is 10 °.

5. The split type electrode cap sharpening tool holder according to claim 1, wherein: the lug boss (16) of the cutting edge main body (2) is connected with the positioning groove (8) of the cutter body seat (1) in an interference fit manner in tolerance fit.

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