Double-edge chip breaking electrode cap sharpening blade, knife rest assembly and electrode cap sharpening machine

Abstract

The utility model belongs to the technical field of electrode cap sharpening equipment, and particularly relates to a double-edge chip breaking electrode cap sharpening blade, a knife rest assembly and an electrode cap sharpening machine, the double-edge chip breaking electrode cap sharpening blade comprises two knife bodies, and the two knife bodies are rotationally symmetrical about the rotation center line of the double-edge chip breaking electrode cap sharpening blade. The cutter body is provided with a front cutter face, a rear cutter face and a cutting edge, the shape of the cutting edge is matched with the appearance of an electrode cap, a chip rolling boss is arranged on the front cutter face, the chip rolling boss is provided with a guide face, the guide face extends in the direction parallel to the cutting edge, and the included angle between the guide face and the front cutter face is 120 degrees. The double-edge chip breaking electrode cap sharpening blade has the advantages that the double-edge chip breaking electrode cap sharpening blade has chip rolling and chip breaking functions at the same time, when an electrode cap is sharpened, copper chips generated in the sharpening process are smoothly guided out through chip rolling and chip breaking, the sharpened copper chips are prevented from being accumulated at the blade, sharpening is smoother, and the service life of the electrode cap is prolonged. And finally, the ground copper cuttings are spiral rolled cuttings in clusters.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrode cap grinding equipment, in particular to a double-edged chip-breaking electrode cap grinding blade, a tool holder assembly and an electrode cap grinding machine. Background Art

[0002] In the resistance welding production of the automobile manufacturing industry, the quality of the end face of the welding electrode directly affects the welding strength. In order to ensure the welding quality, after welding a certain number of welding points, it is usually necessary to use an electrode cap grinder to grind the welding electrode to remove the oxide layer on the end face of the electrode cap.

[0003] In the past grinding process, the copper chips produced were fan-shaped and difficult to clean after falling. The copper chips accumulated on the blade and pressed against the electrode cap for a second time, causing damage to the electrode cap. Utility Model Content

[0004] The utility model aims to provide a double-edged chip-breaking electrode cap grinding blade, a tool holder assembly and an electrode cap grinding machine, so as to solve the problem of copper chips accumulated on the blade caused by grinding in the prior art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A double-edged chip breaker electrode cap grinding blade comprises two blade bodies, the two blade bodies are rotationally symmetrical about the rotation center line of the double-edged chip breaker electrode cap grinding blade, the blade body comprises a rake face, a flank face and a blade, the shape of the blade is adapted to the shape of the electrode cap, a chip rolling boss is provided on the rake face, the chip rolling boss has a guide surface, the guide surface extends in a direction parallel to the blade, and the angle between the guide surface and the rake face is 120 degrees.

[0007] The beneficial effect of the double-edged chip breaking electrode cap grinding blade provided by the utility model is that: compared with the prior art, a chip rolling boss is provided on the front cutting edge, the chip rolling boss has a guide surface, the guide surface extends in a direction parallel to the cutting edge, and the angle between the guide surface and the front cutting edge is 120°, when the electrode cap is cut, the front end of the copper chips hits the guide surface of the chip rolling boss, the guide surface can change the extrusion direction of the copper chips, so that the copper chips shrink and curl in the space between the guide surface and the outer surface of the electrode cap to form a spiral chip roll, as the number of winding turns increases, the outer diameter of the chip roll becomes larger, the chip roll is squeezed by the electrode cap and breaks; the two blade bodies are rotationally symmetrical about the rotation center line of the double-edged chip breaking electrode cap grinding blade, relative to the structure with only one blade body, the double-edged structure of the utility model has better stability. The double-edged chip-breaking electrode cap grinding blade provided by the utility model has both chip rolling and chip breaking functions. When the electrode cap is ground, the copper chips generated in the grinding process are smoothly guided out by chip rolling and chip breaking, so that the copper chips ground out are prevented from accumulating on the blade, making the grinding smoother. Finally, the copper chips ground out are in clusters of spirally rolled chips.

[0008] In one embodiment, the two blades are an integrally formed structure.

[0009] In one embodiment, the shape of the blade is an arc that matches the electrode cap, and the shape of the guide surface is also an arc.

[0010] In one embodiment, the back angle of the double-edged chip breaker electrode cap grinding blade is 3°.

[0011] In one of the embodiments, the double-edged chip breaker electrode cap grinding blade is a vertically symmetrical structure, and the double-edged chip breaker electrode cap grinding blade is provided with an upper grinding part and a lower grinding part, and the upper grinding part and the lower grinding part are both provided with the two blade bodies.

[0012] A tool holder assembly, the tool holder assembly includes the double-edged chip breaking electrode cap grinding blade described in any of the above embodiments, the tool holder includes an upper tool holder and a lower tool holder, the upper tool holder and the lower tool holder are both provided with mounting holes for fasteners to pass through, the upper tool holder and the lower tool holder are locked by fasteners, the left and right sides of the double-edged chip breaking electrode cap grinding blade are respectively provided with protrusions, the bottom of the upper tool holder is provided with an upper enclosure plate, the left and right sides of the upper enclosure plate are respectively provided with upper clamping grooves, the bottom of the lower tool holder is provided with a lower enclosure plate, the left and right sides of the lower enclosure plate are respectively provided with lower clamping grooves, the upper clamping groove and the lower clamping groove are assembled into a limiting hole for the protrusion to be embedded, the width of the double-edged chip breaking electrode cap grinding blade is adapted to the inner diameter of the upper enclosure plate and the lower enclosure plate, the upper enclosure plate and the lower enclosure plate are sleeved on the outside of the double-edged chip breaking electrode cap grinding blade, and the protrusion is embedded in the corresponding limiting hole.

[0013] An electrode cap grinding machine comprises the above-mentioned tool holder assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 It is a structural schematic diagram of a double-edged chip-breaking electrode cap grinding blade according to an embodiment of the utility model;

[0016] Figure 2 A schematic diagram of the formation of chips during the grinding process of the double-edged chip-breaking electrode cap grinding blade of the embodiment of the utility model;

[0017] Figure 3 A schematic diagram of the formation of chips between the double-edged chip-breaking electrode cap grinding blade and the electrode cap according to an embodiment of the utility model;

[0018] Figure 4 A schematic structural diagram of a tool holder assembly according to an embodiment of the utility model;

[0019] Figure 5 for Figure 4 An exploded schematic diagram of the tool holder assembly is shown.

[0020] Among them, the reference numerals in the figure are:

[0021] 1. blade body; 11. blade edge; 12. rake face; 13. flank face; 101. convex block;

[0022] 2. Chip rolling boss; 21. Guide surface;

[0023] 3. Tool holder; 300. Mounting hole; 31. Upper tool holder; 32. Lower tool holder; 311. Upper enclosure; 3110. Upper slot; 321. Lower enclosure; 3210. Lower slot; 330. Limit hole. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0025] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] like Figure 1 As shown, the double-edged chip breaker electrode cap grinding blade provided by the utility model is used for grinding the electrode cap. The double-edged chip breaker electrode cap grinding blade comprises two blade bodies 1. The two blade bodies 1 are rotationally symmetrical about the rotation center line Y of the double-edged chip breaker electrode cap grinding blade, that is, after the double-edged chip breaker electrode cap grinding blade rotates 180° around its rotation center line Y, it coincides with the initial shape.

[0029] The cutter body 1 has a rake face 12, a flank face 13 and a blade 11. The blade 11 is obtained by the intersection of the rake face 12 and the flank face 13. The rake face 12 is the surface on which the chips flow, and most of the rake face 12 is kept in close contact with the flowing chips. The shape of the blade 11 is adapted to the shape of the electrode cap.

[0030] A chip rolling boss 2 is provided on the front cutting edge 12, and the chip rolling boss 2 has a guide surface. The distance between the guide surface and the electrode cap is greater than the distance between the blade and the electrode cap. The guide surface extends in a direction parallel to the blade, and the angle between the guide surface and the front cutting edge is 120°.

[0031] See also Figure 2 and Figure 3 When the electrode cap is being ground, the double-edged chip-breaking electrode cap grinding blade rotates around its rotation centerline (in the figure, the blade rotates clockwise when viewed from top to bottom), and the electrode cap is cut. The cut copper chips are extruded along the front blade surface 12. The cut copper chips are very thin. Since the guide surface 21 has a certain angle, when the front end of the copper chips hits the guide surface 21 of the chip rolling boss 2, the guide surface 21 can change the extrusion direction of the copper chips, so that the copper chips shrink and roll in the space between the guide surface 21 and the outer surface of the electrode cap to form a spiral roll. As the number of windings increases, the outer diameter of the roll increases, and the roll is squeezed by the electrode cap and breaks. The copper chips generated by subsequent cutting continue to shrink and roll in the space between the guide surface 21 and the outer surface of the electrode cap to form another spiral roll. The previous broken spiral roll is discharged from the side of the blade. The copper chips finally ground are clusters of spiral rolls.

[0032] The double-edged chip breaking electrode cap grinding blade provided by the utility model, compared with the prior art, has a chip rolling boss on the front cutting edge, the chip rolling boss has a guide surface, the guide surface extends in a direction parallel to the cutting edge, and the included angle between the guide surface and the front cutting edge is 120 degrees. When the electrode cap is cut, the front end of the copper chips hits the guide surface of the chip rolling boss, and the guide surface can change the extrusion direction of the copper chips, so that the copper chips shrink and roll in the space between the guide surface and the outer surface of the electrode cap to form a spiral chip roll. As the number of winding turns increases, the outer diameter of the chip roll increases, and the chip roll is squeezed by the electrode cap to break. The two blade bodies are rotationally symmetrical about the rotation center line of the double-edged chip breaking electrode cap grinding blade. Compared with the structure with only one blade body, the double-edged structure of the utility model has better stability. The double-edged chip-breaking electrode cap grinding blade provided by the utility model has both chip rolling and chip breaking functions. When the electrode cap is ground, the copper chips generated in the grinding process are smoothly guided out by chip rolling and chip breaking, so that the copper chips ground out are prevented from accumulating on the blade, making the grinding smoother. Finally, the copper chips ground out are in clusters of spirally rolled chips.

[0033] In one embodiment, the two blades are an integrally formed structure.

[0034] In one embodiment, the blade is in an arc shape that matches the electrode cap, and the guide surface is also in an arc shape.

[0035] In one embodiment, the distance L from the intersection line of the guide surface 21 and the rake surface 12 to the cutting edge 11 is 1.8-3 mm.

[0036] In one embodiment, the back angle of the double-edged chip breaker electrode cap grinding blade is 3°, that is, the angle between the back face 13 and the cutting plane is 3°. The back angle can reduce the friction between the back face 13 of the tool and the machining surface of the electrode cap, thereby improving the machining surface quality.

[0037] In one embodiment, the double-edged chip-breaking electrode cap grinding blade is a symmetrical structure, and the double-edged chip-breaking electrode cap grinding blade is provided with an upper grinding part and a lower grinding part, and the upper grinding part and the lower grinding part are both provided with the two blade bodies 1. The electrode cap grinding machine can grind the upper and lower electrode caps at the same time, and the grinding efficiency is high.

[0038] See also Figure 4 and Figure 5 Another embodiment of the utility model provides a tool holder assembly, including a tool holder 3 and the double-edged chip breaking electrode cap grinding blade described in any of the above embodiments, the tool holder 3 includes an upper tool holder 31 and a lower tool holder 32, the upper tool holder 31 and the lower tool holder 32 are both provided with mounting holes 300 for fasteners to pass through, and the upper tool holder 31 and the lower tool holder 32 are locked by fasteners (bolts, nuts). The left and right sides of the double-edged chip breaking electrode cap grinding blade are respectively provided with protrusions 101, the bottom of the upper tool holder 31 is provided with an upper enclosure plate 311, the left and right sides of the upper enclosure plate 311 are respectively provided with upper clamping grooves 3110, the bottom of the lower tool holder 32 is provided with a lower enclosure plate 321, the left and right sides of the lower enclosure plate 321 are respectively provided with lower clamping grooves 3210, the upper clamping groove 3110 and the lower clamping groove 3210 are assembled into a limiting hole 330 for embedding the protrusion 101, the width of the double-edged chip breaking electrode cap grinding blade is adapted to the inner diameter of the upper enclosure plate 311 and the lower enclosure plate 321, the upper enclosure plate 311 and the lower enclosure plate 321 are sleeved on the outside of the double-edged chip breaking electrode cap grinding blade, and the protrusion 101 is embedded in the corresponding limiting hole 330.

[0039] Another embodiment of the utility model provides an electrode cap grinding machine, comprising the above-mentioned tool holder assembly.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-edged chip-breaking electrode cap grinding blade, characterized in that: The double-edged chip breaker electrode cap grinding blade comprises two blade bodies, which are rotationally symmetrical about the rotation center line of the double-edged chip breaker electrode cap grinding blade. The blade body comprises a front blade face, a rear blade face and a blade edge. The shape of the blade edge is adapted to the shape of the electrode cap. A chip rolling boss is provided on the front blade face. The chip rolling boss has a guide surface, which extends in a direction parallel to the blade edge, and the angle between the guide surface and the front blade face is 120 degrees.

2. The double-edged chip-breaking electrode cap grinding blade according to claim 1, characterized in that: The two blade bodies are an integrally formed structure.

3. The double-edged chip-breaking electrode cap grinding blade according to claim 1, characterized in that: The shape of the blade is an arc that matches the electrode cap, and the shape of the guide surface is also an arc.

4. The double-edged chip-breaking electrode cap grinding blade according to claim 1, characterized in that: The back angle of the double-edged chip-breaking electrode cap grinding blade is 3°.

5. The double-edged chip-breaking electrode cap grinding blade according to claim 1, characterized in that: The double-edged chip breaker electrode cap grinding blade is a vertically symmetrical structure, and the double-edged chip breaker electrode cap grinding blade is provided with an upper grinding part and a lower grinding part, and both the upper grinding part and the lower grinding part are provided with the two blade bodies.

6. A tool holder assembly, characterized in that: The tool holder assembly includes a tool holder and a double-edged chip breaking electrode cap grinding blade as described in any one of claims 1 to 5, the tool holder includes an upper tool holder and a lower tool holder, both of which are provided with mounting holes for fasteners to pass through, the upper tool holder and the lower tool holder are locked by fasteners, the left and right sides of the double-edged chip breaking electrode cap grinding blade are respectively provided with protrusions, the bottom of the upper tool holder is provided with an upper enclosure plate, the left and right sides of the upper enclosure plate are respectively provided with upper clamping grooves, the bottom of the lower tool holder is provided with a lower enclosure plate, the left and right sides of the lower enclosure plate are respectively provided with lower clamping grooves, the upper clamping grooves and the lower clamping grooves are assembled into limiting holes for the protrusions to be embedded, the width of the double-edged chip breaking electrode cap grinding blade is adapted to the inner diameters of the upper enclosure plate and the lower enclosure plate, the upper enclosure plate and the lower enclosure plate are sleeved over the double-edged chip breaking electrode cap grinding blade, and the protrusions are embedded in the corresponding limiting holes.

7. An electrode cap grinding machine, characterized in that: The electrode cap grinding machine comprises the tool holder assembly according to claim 6.

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