CN212094803U

CN212094803U - Multi-edge type electrode cap coping cutter rest

Info

Publication number: CN212094803U
Application number: CN202020749799.5U
Authority: CN
Inventors: 顾珊珊
Original assignee: Shenyang Mingyang Automobile Equipment Co ltd
Current assignee: Shenyang Mingyang Automobile Equipment Co ltd
Priority date: 2020-05-09
Filing date: 2020-05-09
Publication date: 2020-12-08
Anticipated expiration: 2030-05-09

Abstract

The invention discloses a multi-edge type electrode cap coping tool rest, which comprises a solid stepped shaft and is mainly technically characterized in that: two locking lugs are arranged at the extension part of a small-diameter shaft of the solid stepped shaft, a base circle concentric with the center of the solid stepped shaft is arranged in the solid stepped shaft by taking the center of the solid stepped shaft as a reference, chip removing holes penetrating through the solid stepped shaft are uniformly distributed and arrayed outwards on the base circle, arrayed cutter bodies are uniformly distributed at the contour line of the base circle, main blades of the cutter bodies respectively form gamma included angles with the center line of the solid stepped shaft, and front blade angles of the beta included angles are respectively formed on the cutter bodies and auxiliary blades are respectively derived along the shapes of the main blades. The beneficial effects are that: the grinding tool rest and the cutting edge form an integral structure, the replacement and installation are convenient, and the replaced tool rest can be repeatedly used after grinding and correction.

Description

Multi-edge type electrode cap coping cutter rest

Technical Field

The invention relates to a sharpening tool rest, in particular to a multi-edge type electrode cap sharpening tool 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.

At present, the existing electrode cap grinding tool rest is disassembled and assembled, a single-edge type split-charging tool is common, the tool rest with the structure is made of carbon steel, fan-shaped holes are formed in the tool rest, and hard alloy blades or high-speed steel blades are embedded in the fan-shaped holes, so that the structure is low in manufacturing cost, but the electrode cap receives cutting force from a fixed edge direction during grinding, so that the grinding time is long, the cutting force is not uniform, the surface of an electrode is rough after grinding, welding spots of a workpiece are uneven, and the welding strength is difficult to guarantee.

Chinese patent with application number CN201920808540.0 discloses an electrode coping cutter, which is also of a split structure, although the cutter set adopts an integral structure, the cutting edge adopts a single-side edging structure, and after one side of the edging is connected with the side wall of the adjacent cutting edge into a whole, the cutting edge and the side wall are of a linear structure. Although the springs are arranged in the through grooves on the two sides of the outer end of the blade, the two ends of the springs are abutted against the outer end of the blade and the cover plate respectively, when the blade is stressed in the axial direction, the blade properly slides towards the other end and depends on the springs to buffer cutting force and vibration impact force, when the blade slides, the surface of a ground electrode is rough, welding spots of a workpiece are uneven, and welding strength is difficult to guarantee.

In addition, the structure is characterized in that a plurality of parts are adopted for assembly, and the cutter set needs to be replaced after disassembly and decomposition, so that the replacement is inconvenient.

Disclosure of Invention

The invention aims to solve the defects of the problems and provides a multi-edge type electrode cap grinding tool rest which is used for overcoming the defects of non-uniform cutting force, reducing the cutting force, improving the angle of a cutting edge to enable the cutting edge to be sharper and eliminating vibration generated by cutting, so that the phenomenon of edge breakage is solved, the grinding quality of an electrode cap is improved, and the ground electrode cap is repaired as new.

In order to solve the technical problems, the invention adopts the technical scheme that:

including solid step shaft, characterized by: two locking lugs are arranged at the extension part of a small-diameter shaft of the solid stepped shaft, a base circle concentric with the center of the solid stepped shaft is arranged in the solid stepped shaft by taking the center of the solid stepped shaft as a reference, chip removing holes penetrating through the solid stepped shaft are uniformly distributed and arrayed outwards on the base circle, arrayed cutter bodies are uniformly distributed at the contour line of the base circle, main blades of the cutter bodies respectively form gamma included angles with the center line of the solid stepped shaft, and front blade angles of the beta included angles are respectively formed on the cutter bodies and auxiliary blades are respectively derived along the shapes of the main blades.

Further, the value of said included angle γ is in the range of 10 ° to 20 °.

Further, the included angle β has a value in the range of 140 ° to 170 °.

Furthermore, three through holes are formed in the end face of the large-diameter shaft extension of the solid stepped shaft.

Furthermore, the number of the uniformly distributed array cutter bodies at the base circle contour line is three or four.

Further, the cutter body is symmetrically arranged in the base circle of the solid stepped shaft.

Furthermore, the solid stepped shaft is made of tungsten carbide hard alloy steel or high-speed steel.

Compared with the prior art, the invention has the beneficial effects that: the grinding tool rest and the cutting edge form an integral structure, so that the grinding tool rest is convenient to replace and mount, and the replaced tool rest can be reused through grinding and correction.

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 four cutter bodies within a solid stepped shaft of the present invention.

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

Fig. 3 is a bottom view of fig. 1.

Fig. 4 is a cross-sectional view taken along line a-a of fig. 1.

Fig. 5 is a front view of three cutter bodies within a solid stepped shaft of the present invention.

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

Fig. 7 is a bottom view of fig. 5.

Fig. 8 is a sectional view taken along line B-B of fig. 5.

Detailed Description

As shown in fig. 1-4, two locking lugs 2 are disposed at the small-diameter shaft extension of the solid stepped shaft 1, a base circle 3 concentric with the center of the solid stepped shaft 1 is disposed inside the solid stepped shaft 1 with the center of the solid stepped shaft 1 as a reference, chip removing holes 4 penetrating the solid stepped shaft 1 are uniformly and outwardly disposed on the base circle 3 in an array manner, cutter bodies 5 are uniformly disposed at the contour lines of the base circle 3, main blades 6 of the cutter bodies 5 respectively form a gamma included angle with the center line of the solid stepped shaft 1, a front blade angle 7 of the beta included angle is formed on the cutter bodies 5, and secondary blades 8 are derived along the shape of the main blades 5.

Further, the value of said included angle γ is in the range of 10 ° to 20 °.

Further, the included angle β has a value in the range of 140 ° to 170 °.

Furthermore, three through holes 9 are arranged at the end surface of the large-diameter shaft extension of the solid stepped shaft 1.

Furthermore, the number of the uniformly distributed array cutter bodies 5 at the base circle contour line is three or four.

Further, the cutter body 5 is symmetrically arranged in the base circle 3 of the solid stepped shaft 1.

Further, the solid stepped shaft 1 is made of tungsten carbide hard alloy steel or high-speed steel.

When four cutter bodies 5 are uniformly distributed on the contour line of the base circle 3 of the solid stepped shaft 1, the center of the chip removal hole 4 is positioned on the contour line of the base circle 3, the gamma included angle value formed by the main cutting edge 6 of each cutter body 5 and the center line of the solid stepped shaft 1 is 10 degrees, and the beta included angle value of the front cutting edge 7 on each cutter body 5 is 150-170 degrees.

When three cutter bodies 5 are uniformly distributed and arrayed on the contour line of the base circle 3 of the solid stepped shaft 1, the center of the chip removal hole 4 is positioned in the contour line of the base circle 3, the gamma included angle value formed by the main cutting edge 6 of each cutter body 5 and the center line of the solid stepped shaft 1 is 20 degrees, and the beta included angle value of the front cutting edge 7 on each cutter body 5 is 140 degrees to 160 degrees.

When the electrode cap is polished, the solid stepped shaft 1 is installed by screwing the locking lug into the clamping groove of the sharpener, the solid stepped shaft 1 is fixed on the end surface of the sharpener by penetrating a bolt at the through hole 9,

when repairing alloying and recrystallization and adhesion failure modes on the surface of the electrode cap, firstly, grinding and cutting are carried out by adopting a GW1 brand in a tungsten carbide hard alloy steel material and the solid stepped shafts 1 of the three cutter bodies 5, the gamma included angle value formed by the main cutting edges 6 of the cutter bodies 5 and the central line of the solid stepped shafts 1 is 20 degrees, so that the main cutting edges 6 are sharper, the cutting force is reduced, the uneven cutting force is overcome, the main cutting edges 6 are in point contact with the failure modes of the electrode cap during grinding, the vibration generated by cutting is eliminated, and the phenomenon of edge breakage is solved. The beta included angle value of the front edge angle 7 on the cutter body 5 is within the range of 140 degrees to 160 degrees, so that smooth chip removal is ensured, good heat dissipation performance is realized, the heat dissipation of the main blade 6 is effectively protected, and the motor cap can be continuously and efficiently polished by the main blade 6. In the process of grinding the motor cap, the secondary blade 8 of the cutter body 5 is used for polishing and grinding the motor cap after grinding the main blade 6, so that the grinding quality of the electrode cap is improved.

And the W18Cr4V brand in the high-speed steel material and the solid stepped shafts 1 of the four cutter bodies 5 are adopted for secondary grinding and finishing, and meanwhile, the auxiliary blades 8 of the cutter bodies 5 are used for carrying out secondary grinding and finishing on the motor cap subjected to secondary grinding and finishing on the main blade 6, so that the ground motor cap is new.

In addition, W18Cr4V brand in the high-speed steel material, four solid step shaft 1 of cutter body 5 can be used for the coping that the electrode cap material is red copper, the failure form of brass, the electrode cap material of copper, brass class material is softer, when the plastic deformation failure form of electrode cap and coping copper base alloy material motor cap of coping this type, W18Cr4V brand in the high-speed steel material, four solid step shaft 1 of cutter body 5 are more efficient, and the repair effect is better.

When the main cutting edge 6 and the auxiliary cutting edge 8 of the solid stepped shaft 1 are passivated, the solid stepped shaft can be reused after being ground again, and the utilization rate of the solid stepped shaft is improved.

Claims

1. The utility model provides a multi-edge type electrode cap coping knife rest, includes solid step shaft, characterized by: two locking lugs are arranged at the extension part of a small-diameter shaft of the solid stepped shaft, a base circle concentric with the center of the solid stepped shaft is arranged in the solid stepped shaft by taking the center of the solid stepped shaft as a reference, chip removing holes penetrating through the solid stepped shaft are uniformly distributed and arrayed outwards on the base circle, arrayed cutter bodies are uniformly distributed at the contour line of the base circle, main blades of the cutter bodies respectively form gamma included angles with the center line of the solid stepped shaft, and front blade angles of the beta included angles are respectively formed on the cutter bodies and auxiliary blades are respectively derived along the shapes of the main blades.

2. The multi-edge type electrode cap coping tool holder according to claim 1, wherein: the included angle gamma has a value in the range of 10 DEG to 20 deg.

3. The multi-edge type electrode cap coping tool holder according to claim 1, wherein: the value of the included angle beta is in the range of 140 DEG to 170 deg.

4. The multi-edge type electrode cap coping tool holder according to claim 1, wherein: three through holes are arranged on the end surface of the large-diameter shaft extension of the solid stepped shaft.

5. The multi-edge type electrode cap coping tool holder according to claim 1, wherein: the number of the cutter bodies uniformly distributed in the base circle outline is three or four.

6. The multi-edge type electrode cap coping tool holder according to claim 1, wherein: the cutter body is symmetrically arranged in the base circle of the solid stepped shaft.

7. The multi-edge type electrode cap coping tool holder according to claim 1, wherein: the solid stepped shaft is made of tungsten carbide hard alloy steel or high-speed steel.