A tool for grinding and shaping electrode caps

Abstract

The present invention discloses an electrode cap grinding and shaping tool, comprising a tool holder and a tool disposed within the tool holder, wherein shaping cavities are symmetrically provided on the upper and lower sides of the tool holder, and a "cross"-shaped mounting groove is provided at the center; the tool comprises a long knife and short knives symmetrically provided on both sides of the long knife; the long knife is symmetrically provided with "U"-shaped blades on the upper and lower sides, and the chip cutting edge surfaces of the blades include at least a shaping bottom cut surface and guide surfaces provided on both sides of the shaping bottom cut surface; the short knife is symmetrically provided with working surfaces with an arc-shaped curved surface structure on the upper and lower sides. A long knife and two short knives are used for processing; the long knife has a curved edge structure, which is in line contact or small plane contact with the electrode cap, providing sufficient contact stress for processing; a double-hole chip removal system is used to prevent clogging and extend the service life.

Description

Technical Field

[0001] The invention relates to the technical field of electrode cap grinding, in particular to an electrode cap grinding and shaping tool. Background Art

[0002] On an automated welding production line, the surface of the electrode cap will burn, oxidize, or precipitate an alloy layer during the welding process. Therefore, grinding equipment is required to grind the electrode cap to improve welding efficiency.

[0003] At present, most products on the market are mainly cutting-type grinding, which uses cutting to remove the surface oxide layer, but has the following shortcomings:

[0004] 1. Single-hole chip removal is prone to clogging and chipping, requiring frequent maintenance and regular tool replacement;

[0005] 2. The tool is welded or connected to the tool holder, which makes it inconvenient to replace it later;

[0006] 3. The amount of grinding is large, the life of the electrode cap is short, and it needs to be replaced frequently.

[0007] Therefore, it is necessary for us to improve such a structure to overcome the above-mentioned defects. Summary of the Invention

[0008] The purpose of the present invention is to overcome the deficiencies of the prior art and provide an electrode cap grinding and shaping tool.

[0009] The present invention is achieved through the following technical solutions:

[0010] An electrode cap grinding and shaping tool comprises a tool holder and a tool arranged in the tool holder, wherein:

[0011] The upper and lower sides of the knife seat are symmetrically concave with plastic cavities, and a "cross" shaped installation groove is set in the center;

[0012] The tool includes a long knife and a short knife symmetrically arranged on both sides of the long knife. The long knife is symmetrically provided with a "U"-shaped blade on the upper and lower sides. The grinding edge surface of the blade at least includes a shaped bottom cutting surface and a processing surface arranged on both sides of the shaped bottom cutting surface; the short knife is symmetrically provided with a working surface with an arc-shaped curved surface structure on the upper and lower sides.

[0013] The present invention is further configured as follows: the shaping cavity is a hemispherical cavity, and the mounting groove divides the shaping cavity into four accommodating seats.

[0014] The present invention is further configured as follows: the installation slot includes a transverse through-channel for the long knife to extend into, and longitudinal slots symmetrically arranged on both sides of the transverse through-channel for the short knife to extend into.

[0015] The present invention is further configured such that chip removal grooves are provided at the accommodating seats at two opposite corners.

[0016] The present invention is further configured as follows: a planar extension end extends from the bottom surface of the accommodating seat at the other two opposite corners, and the planar extension end contacts the short knife and is used to limit the short knife.

[0017] The present invention is further configured as follows: the cross section of the shaped bottom section is a pointed curved surface structure, and the upper surface of the shaped bottom section is designed according to the shape of the electrode cap and is designed to be an arc shape.

[0018] The present invention is further configured as follows: the blade of the long knife also includes an adaptable surface arranged at the upper end of the processing surface, the adaptable surface is an inclined plane, and the inclination angle of the adaptable surface is greater than the inclination angle of the processing surface.

[0019] The present invention is further configured as follows: a positioning surface is further provided at the upper end of the adapting surface, and the top surface of the positioning surface is a plane.

[0020] The present invention is further configured such that: the knife seat is a polygonal column structure.

[0021] The present invention discloses an electrode cap grinding and shaping tool. Compared with the prior art:

[0022] 1. A long knife and two short knives are used for combined processing. The cutting edge of the long knife is a curved surface structure, which contacts the electrode cap surface or small plane to provide sufficient contact stress for processing.

[0023] 2. Double-hole chip removal can prevent blockage and extend service life;

[0024] 3. The flat extension end prevents the long knife and the short knife from contacting each other, thus extending the service life of the knife. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0026] Figure 2 It is a top view of the present invention.

[0027] Figure 3 It is a schematic diagram of the three-dimensional structure of the knife holder of the present invention.

[0028] Figure 4 It is a top view of the knife seat of the present invention.

[0029] Figure 5 It is a front view of a long knife of the present invention.

[0030] Figure 6 It is a three-dimensional view of the long knife of the present invention.

[0031] Figure 7 It is a perspective view of the short knife of the present invention.

[0032] Figure 8 It is a structural diagram of the electrode cap, used to show the processing status.

[0033] Figure 9 It is a cross-sectional view of the present invention.

[0034] Figure 10 for Figure 9 Enlarged view of side A.

[0035] The numbers and letters in the figure represent the corresponding component names:

[0036] Among them: 1. Tool holder; 2. Long tool; 3. Short tool; 11. Shaping cavity; 12. Mounting groove; 12a. Horizontal through groove; 12b. Longitudinal groove; 13. Accommodating seat; 14. Chip removal groove; 15. Plane extension end; 21. Tool edge; 21a. Shaping bottom cut surface; 21b. Processing surface; 21c. Adaptation surface; 21d. Positioning surface. DETAILED DESCRIPTION

[0037] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0038] Among them, the drawings are only used for illustrative purposes and represent only schematic diagrams rather than actual pictures, and should not be understood as limiting this patent; in order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0039] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inside", "outside" and the like indicate an orientation or position relationship based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0040] See Figures 1 to 7As shown, an electrode cap grinding and shaping tool comprises a tool holder 1 and a tool arranged in the tool holder 1, wherein the tool holder 1 is symmetrically provided with shaping cavities 11 on the upper and lower sides, and a "cross"-shaped mounting groove 12 is provided at the center; the tool comprises a long knife 2 and a short knife 3 symmetrically provided on both sides of the long knife 2, the long knife 2 is symmetrically provided with "U"-shaped blade edges 21 on the upper and lower sides, and the grinding edge surface of the blade edge 21 at least includes a shaping bottom cut surface 21a and a processing surface 21b provided on both sides of the shaping bottom cut surface 21a; the short knife 3 is symmetrically provided with a working surface 31 with an arc-shaped curved surface structure on the upper and lower sides. wherein, a long knife 2 and a short knife 3 are provided in the knife holder 1, and the two short knives 3 are symmetrically arranged relative to the long knife 2. The design of the "U"-shaped blade 21 facilitates the insertion of the electrode cap, and the blade 21 comprises at least a shaping bottom cutting surface 21a and processing surfaces 21b on both sides, and a transition curved surface 1 is provided between the shaping bottom cutting surface 21a and the processing surface 21b, and the transition curved surface 1 realizes a smooth transition between the shaping bottom cutting surface 21a and the processing surface 21b, and can complete the transition processing between the spherical surface of the end of the electrode cap and the unprocessed area; the processing surface 21b is a spatial curved surface with a projection contour that matches the spherical surface of the end of the electrode cap and an arc-shaped cross section, and cooperates with the working surface 31 of the short knife 3 to complete the processing of the spherical surface of the end of the electrode cap during operation; the two processing surfaces 21b of the blade 21 have the same arc radius, and the center of the circle is in the same plane as the center of the spherical surface of the electrode cap, which can meet the requirements of the electrode rod centering accuracy and the deformation of the end of the electrode cap; the working surface 31 of the short knife 3 is used for spherical surface processing of the end of the electrode cap; refer to Figure 5 and Figure 7 As shown, the long knife 2 is a rectangular knife; the short knife 3 is arranged symmetrically along the center line thereof, and the upper end of the working surface 31 is further provided with an upper side arc surface, which is a cylindrical surface inclined at a certain angle (it can also be an inclined surface), and the inclination angle of the upper side arc surface is greater than the inclination angle of the working surface 31, and the top of the upper side arc surface is a plane for limiting the position; the end of the working surface 31 has a ridge line, and the ridge line participates in the processing of the transition position of the small plane at the end of the electrode cap and the end spherical surface; refer to Figure 8 As shown, the electrode cap comprises a cylindrical body, an end spherical surface SR1, and an end flat surface φd1 (actually a spherical surface SR2, which has a small area and a large radius, making it close to a plane, and therefore can also be called an end facet). The shaped undercut surface 21a comprises powder-conducting surfaces symmetrically arranged at the bottom of both sides of the shaped surface. The cross-section of the shaped surface is a pointed spatial curved surface, and the upper surface of the shaped surface is an arc-shaped structure. The powder-conducting surface is an inclined surface, used to discharge metal powder.

[0041] See Figures 1 to 3As shown, the shaping cavity 11 is a hemispherical cavity, and the mounting groove 12 divides the shaping cavity 11 into four receiving seats 13. The hemispherical shaping cavity 11 is adapted to the overall shape of the electrode cap, and the mounting groove 12 divides the shaping cavity 11 into four receiving seats 13. At the same time, the mounting groove 12 is used to install the long blade 2 and the short blade 3 to meet the centering accuracy requirements of the electrode cap and the motor rod.

[0042] See Figure 4 As shown, the mounting groove 12 includes a transverse through-channel 12a for the long blade 2 to extend into, and longitudinal grooves 12b symmetrically arranged on either side of the transverse through-channel 12a for the short blade 3 to extend into. The transverse through-channel 12a is provided for mounting the long blade 2, and the short blades 3 are symmetrically arranged on either side of the long blade 2, which extend into the longitudinal grooves 12b. This allows the long blade 2 and the short blade 3 to be mounted in the mounting groove 12. The "cross"-shaped mounting groove 12 can achieve radial positioning and circumferential assembly of the long blade 2 and the short blade 3, thus enabling the combined installation of the long blade 2 and the short blade 3.

[0043] See Figure 4 As shown, the receiving seats 13 at two opposite corners are provided with chip removal grooves 14. The two receiving seats 13 are provided with chip removal grooves 14. The two chip removal grooves 14 arranged diagonally can greatly play a chip removal effect and are not prone to clogging. As a preferred embodiment, the chip removal grooves 14 are rectangular chip removal grooves. Of course, the chip removal grooves 14 can also be of other shapes.

[0044] See Figure 4 As shown, the bottom surface of the receiving seat 13 at the other two opposite corners extends with a flat extension end 15, which contacts the short knife 3 and is used to limit the position of the short knife 3. One end of the short knife 3 contacts the inner wall of the tool holder 1, and the other end of the short knife 3 contacts the flat extension end 15, thereby achieving the limiting and fixation of the short knife 3. It should be noted that the height of the shaped bottom cut surface 21a of the long knife 2 and the height of the end of the working surface 31 of the short knife 3 are both higher than the height of the flat extension end 15, which can avoid direct contact between the electrode cap and the tool holder 1 during the processing process and extend the service life. In addition, the length of the flat extension end 15 is less than the thickness of the short knife 3, which is conducive to chip removal. In addition, the long knife 2 and the short knife 3 do not contact each other, which can effectively extend the service life of the long knife 2 and the short knife 3.

[0045] See Figure 5 and Figure 6As shown, the cross-section of the shaped bottom cut surface 21a is a pointed curved surface structure, and the upper surface of the shaped bottom cut surface 21a is designed according to the shape of the electrode cap and is designed to be arc-shaped. The projected contour of the curved surface of the shaped bottom cut surface 21a coincides with the facet of the electrode cap end surface, and the facet of the electrode cap end surface can be processed during operation.

[0046] See Figure 6 As shown, the blade 21 of the long knife 2 also includes an adapting surface 21c disposed above the processing surface 21b. The adapting surface 21c is an inclined plane, and the inclination angle of the adapting surface 21c is greater than the inclination angle of the processing surface 21b. A second transitional curved surface is provided between the adapting surface 21c and the processing surface 21b. The second transitional curved surface completes the transition between the adapting surface 21c and the processing surface 21b. The cooperation between the adapting surface 21c and the processing surface 21b can adapt to situations where the electrode rod has a certain angle.

[0047] See Figure 6 As shown, a positioning surface 21d is further provided at the upper end of the adapting surface 21c, and the top surface of the positioning surface 21d is a plane. The top surface of the positioning surface 21d is a plane, and the top surface of the short knife 3 is a plane. It is worth noting that the heights of the long knife 2 and the short knife 3 are equal to the height of the knife holder 1, that is, the long knife 2 and the short knife 3 are embedded in the knife holder 1 and their surfaces are flush.

[0048] See Figure 3 As shown, the tool holder 1 is a polygonal prism structure. As a preferred embodiment, the tool holder 1 is a hexagonal prism structure. In addition, the tool holder 1 can also be a triangular prism, a quadrangular prism, a pentagonal prism, etc.

[0049] It is worth noting that see Figure 9 and Figure 10 As shown, taking the upper half of the present technical solution as an example, the height of the ridgeline of the working surface 31 of the short knife 3 is higher than the height of the bottom surface of the processing surface 21b, and the height of the ridgeline of the working surface 31 is higher than the height of the upper surface of the shaping bottom cut surface 21a; It is worth noting that Figure 10 The dotted line drawn from the ridgeline of the middle processing surface 31 is only used to illustrate its height position.

[0050] Working principle of this technical solution:

[0051] The present technical solution realizes pressure shaping through two-stage processing when working. The knife seat 1 and the long knife 3 and the short knife 3 keep rotating. Therefore, when the electrode cap is pressed down, due to the high height of the ridge position of the working surface 31, the electrode cap is first processed by the working surface 31 of the short knife 3 to remove the deposited layer on the surface of the electrode cap; after the deposited layer is removed, pressure is continued to be applied to the electrode cap, and then the working surface 31, the shaping bottom cutting surface 21a and the processing surface 21b are used to process the electrode cap at the same time, so that the surface is smooth, providing a higher surface quality and ensuring the requirements of smoothness and smoothness. Requirement: The electrode cap and the blade are brought into surface contact by rotating the long knife 2 and the short knife 3, and then pressure is applied to the electrode cap so that the electrode cap is continuously close to the grinding edge surface of the blade. The hardness difference between the blade and the electrode cap is achieved through the speed difference extrusion force, so that grinding is performed. Moreover, the material of the blade is harder than that of the electrode cap, and the alloy layer, oxide layer and other surface materials can be peeled off from the surface of the electrode cap. The peeled powder participates in surface grinding, which greatly improves the grinding quality. This grinding method replaces the traditional cutting method, and no copper chips are generated during the processing.

[0052] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

[0053] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

Claims

1. An electrode cap grinding and shaping tool, characterized in that: It comprises a knife seat (1) and a knife arranged in the knife seat (1), wherein: The knife seat (1) is symmetrically provided with a plastic cavity (11) on the upper and lower sides, and a "cross"-shaped mounting groove (12) is provided at the center; The tool comprises a long knife (2) and short knives (3) symmetrically arranged on both sides of the long knife (2); the long knife (2) is symmetrically provided with a U-shaped blade (21) on the upper and lower sides; the grinding edge surface of the blade (21) comprises at least a shaping bottom cut surface (21a) and processing surfaces (21b) arranged on both sides of the shaping bottom cut surface (21a); ​​the short knife (3) is symmetrically provided with a working surface (31) having an arc-shaped curved surface structure on the upper and lower sides; The shaping cavity (11) is a hemispherical cavity, and the mounting groove (12) divides the shaping cavity (11) into four receiving seats (13); Chip removal grooves (14) are provided at the receiving seats (13) at two opposite corners; The bottom surfaces of the accommodating seats (13) at the other two opposite corners extend with planar extension ends (15), and the planar extension ends (15) are in contact with the short knife (3) and are used to limit the short knife (3); The two processing surfaces (21b) of the blade (21) have the same arc radius, and the center of the circle and the center of the electrode cap sphere are located in the same plane; the end of the working surface (31) has a ridge line.

2. The electrode cap grinding and shaping tool according to claim 1, characterized in that: The mounting groove (12) comprises a transverse through-channel (12a) for the long knife (2) to extend into, and a longitudinal groove (12b) symmetrically arranged on both sides of the transverse through-channel (12a) and for the short knife (3) to extend into.

3. The electrode cap grinding and shaping tool according to claim 1, characterized in that: The cross section of the shaped bottom section (21a) is a pointed top curved surface structure, and the upper surface of the shaped bottom section (21a) is designed according to the shape of an electrode cap and is designed to be an arc shape.

4. The electrode cap grinding and shaping tool according to claim 1 or 3, characterized in that: The blade (21) of the long knife (2) further comprises an adaptable surface (21c) arranged at the upper end of the processing surface (21b); the adaptable surface (21c) is an inclined plane, and the inclination angle of the adaptable surface (21c) is greater than the inclination angle of the processing surface (21b).

5. The electrode cap grinding and shaping tool according to claim 4, characterized in that: A positioning surface (21d) is further provided at the upper end of the adaptation surface (21c), and the top surface of the positioning surface (21d) is a plane.

6. The electrode cap grinding and shaping tool according to claim 1, characterized in that: The knife seat (1) is a polygonal column structure.

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