CN212634656U

CN212634656U - Split type welding electrode coping cutter

Info

Publication number: CN212634656U
Application number: CN202021783671.7U
Authority: CN
Inventors: 李铭锋; 杨上陆; 王艳俊
Original assignee: Shanghai Institute of Optics and Fine Mechanics of CAS
Current assignee: Shanghai Institute of Optics and Fine Mechanics of CAS
Priority date: 2020-08-24
Filing date: 2020-08-24
Publication date: 2021-03-02
Anticipated expiration: 2030-08-24

Abstract

The utility model discloses a split type welding electrode coping cutter, which comprises a cutter holder and a blade, wherein the cutter holder is formed by splicing two half cutter holders left and right, and the blade is buckled on the half cutter holders and is fixed in the cutter holder after being spliced and fastened by the two half cutter holders; the half tool apron is provided with a chip groove, an upper electrode supporting surface, a lower electrode supporting surface, a countersunk hole and a threaded hole; the blade is an integrated double-edge blade and comprises an upper electrode cutting double edge and a lower electrode cutting double edge. The blade and the half blade seats are mutually assembled through keys and key grooves, and the two half blade seats are connected through fastening screws to realize the splitting and the splicing of the blade seats and the blade. The utility model discloses simple structure installs and removes the convenience, reduces making originally of component simultaneously. When the utility model is adopted to repair and cut the electrode, the upper and the lower double blades simultaneously grind the electrode with high efficiency; and the upper electrode supporting surface and the lower electrode supporting surface of the tool apron have supporting and guiding effects on the electrodes, so that the stability of the grinding process is improved, and the effects of reliable grinding quality and low loss of the blade and the tool apron are realized.

Description

Split type welding electrode coping cutter

Technical Field

The utility model belongs to the technical field of resistance spot welding welded in the automobile body automated manufacturing, concretely relates to amalgamation formula welding electrode coping cutter.

Background

In the component connection scheme in the field of automobile automatic manufacturing, the most common technology is resistance spot welding technology, and in order to adapt to fast beat and high-volume production and manufacturing of automobiles, an automobile manufacturing production line is generally configured with a plurality of resistance spot welding robots for cooperating with automatic operation. Generally, a resistance spot welding robot is used for manufacturing 3000-5000 welding spots on an automobile body. Since automobiles currently employ components of various metal materials to achieve the best performance and the lowest weight of automobiles to improve fuel economy and reduce harmful gas emissions, these materials include galvanized and aluminized steel, aluminum alloys, magnesium alloys, and the like. Different materials have different wear behavior and aging speed for the electrode. Therefore, in order to prolong the service life of the welding electrode and avoid the problem of welding spot quality reduction caused by electrode abrasion, the most common and effective scheme at present is to regularly carry out cutting repair on the abraded electrode end face, cut off impurities or abraded pits adhered to the electrode end face, recover the original welding end face appearance of the electrode end face and further ensure the stability of the manufactured welding seam quality.

The widely used automatic electrode grinding technology is that a grinding cutter capable of rotating along the axis is arranged on a grinding device, a wear electrode arranged on a welding tongs (welding gun) is driven by a welding robot to be close to the grinding cutter, and the grinding cutter rotating at a high speed carries out cutting grinding on the end face of the electrode. The quality and speed of the grinding are determined by the number of the cutting edges of the grinding cutter, the rotating speed of the grinding cutter and the feeding amount of the electrode, and different electrode appearances and grinding cutters correspond to specific grinding processes. The prior common blade for sharpening the cutter has single edge, three edges and four edges, and a few of the blades are double edges. The grinding efficiency of the single-edge cutter is low, and the cutter is easy to wear; the three-edge and four-edge sharpening tools have high sharpening efficiency, but the tools have complicated structures and are difficult to manufacture, so that the cost for manufacturing and replacing the blades is high, and the complicated tool structures cause difficult installation.

The split type welding electrode grinding cutter only needs two half cutter seats and an integral double-edged blade to be simply and accurately spliced, so that the stability of the grinding cutter structure and the quality of grinding quality can be ensured; while having a simpler tool design, lower manufacturing costs and more convenient blade replacement. This is a demanding difficulty for the mechanism.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not enough and existing problem of prior art, the utility model provides a press from both sides tight blade after amalgamation about two half blade holders, and can accurate location and reliable one kind of amalgamation welding electrode coping cutter of stable in structure, utilize amalgamation welding electrode coping cutter to realize high efficiency coping, low coping cutter loss and cutter workable manufacturing and low manufacturing cost's solution.

The utility model discloses a solve foretell technical problem through following technical scheme:

the utility model provides a split type welding electrode coping cutter, includes blade holder and blade, its characterized in that, the blade holder by two half blade holders about the amalgamation form, the blade buckle be in half blade holder on to through two half blade holder amalgamations and fastening after-fixing in the blade holder.

Preferentially, two half blade holder structural design are unanimous completely, the one end of half blade holder be equipped with about two scarf and be located the keyway that is used for supplying blade key embedding between these two scarf, the other end of half blade holder be equipped with about two protruding structures, this protruding structure have with the scarf of the scarf looks adaptation of the one end of half blade holder, make about two half blade holders realize amalgamation.

Preferably, the blade is a one-piece blade, which includes upper and lower double cutting edges that are symmetrical. The two ends of the blade are respectively provided with a key.

Furthermore, two mounting planes are symmetrically arranged on the outer wall of the half cutter holder. The upper end of the half cutter holder is also provided with an end support ring integrally connected with the cutter holder.

In another preferred embodiment, two half blade holders are completely consistent in structural design, one end of each half blade holder is provided with a key, the other end of each half blade holder is provided with two protruding structures, the blade is an integrated double-edged blade, the double-edged blade comprises an upper electrode cutting double-edged blade and a lower electrode cutting double-edged blade which are formed by oppositely arranging a left blade and a right blade in a staggered mode, key grooves and stepped structures on the upper side and the lower side of the key grooves are formed in the two ends of the blade, and the key and the two protruding structures of the half blade holders are respectively embedded.

Furthermore, a coping cutter mounting surface is arranged on the outer wall of the half cutter holder. The upper end of the half cutter holder is also provided with an end support ring integrally connected with the cutter holder.

In another preferred embodiment, the two sides of one half cutter seat are provided with a key groove and a chamfer, the two ends of the other half cutter are provided with a convex structure and a chamfer, the blade is an integrated double-edged blade, and the two ends of the blade are provided with keys.

In another preferred embodiment, two sides of one half cutter holder are provided with keys, two sides of the other half cutter holder are provided with two protruding structures, the blade is an integrated double-edged blade, and two ends of the blade are provided with key grooves.

Compared with the prior art, the utility model discloses a following profitable effect has:

(a) the two half tool apron are simple in structure and can be identical in structure, and manufacturing cost is reduced.

(b) The integrated blade has a simple structure, avoids the processing technologies with high difficulty such as hole forming, tapping and the like on the blade, and is beneficial to processing and manufacturing;

(c) the grinding cutter is simple, accurate and reliable in assembly, and the quality and the efficiency of the grinding electrode are guaranteed.

(d) The blade is simple and convenient to replace.

Drawings

Fig. 1 is an exploded view of a sharpening tool according to embodiment 1 of the present invention.

Fig. 2 is an axial view of a left blade holder of a milling cutter in embodiment 1 of the present invention.

Fig. 3 is an axial view of a right holder of a milling cutter in embodiment 1 of the present invention.

Fig. 4 is an isometric view of a blade of a sharpening tool according to embodiment 1 of the present invention.

Fig. 5 is an assembly schematic view of a left blade holder and a blade of a sharpening tool in embodiment 1 of the present invention.

Fig. 6 is an axial view of a dressing tool according to embodiment 1 of the present invention.

Fig. 7 is a plan view of a dressing tool according to embodiment 1 of the present invention.

Fig. 8 is a front view of a dressing tool according to embodiment 1 of the present invention.

Fig. 9 is an exploded view of a dressing tool according to embodiment 2 of the present invention.

Fig. 10 is an isometric view of a left blade holder of a milling cutter in accordance with embodiment 2 of the present invention.

Fig. 11 is an axial view of a right holder of a milling cutter in embodiment 2 of the present invention.

Fig. 12 is an isometric view of a blade of a milling cutter of embodiment 2 of the present invention.

Fig. 13 is a front view of an insert for a milling cutter according to embodiment 2 of the present invention.

Fig. 14 is an assembly schematic view of a left blade holder and a blade of a sharpening tool in embodiment 2 of the present invention.

Fig. 15 is an axial view of a dressing tool according to embodiment 2 of the present invention.

Fig. 16 is a front view of a dressing tool according to embodiment 2 of the present invention.

Fig. 17 is a plan view of a dressing tool according to embodiment 2 of the present invention.

Detailed Description

For a better understanding of the objects, features and advantages of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the invention, are given by way of illustration only.

Example 1:

the utility model provides a split type welding electrode coping cutter, coping cutter can cut and restore spherical electrode, as shown in figures 1-8, include: the left tool apron half 100, the right tool apron half 200, the insert 300 and the hexagon socket head cap screw 400 are shown in fig. 1. In order to reduce the manufacturing cost, the present embodiment preferably adopts the same structural design for the left tool apron half 100 and the right tool apron half 200, and for better describing the present embodiment, the left tool apron half and the right tool apron half are numbered differently.

As shown in fig. 2, the left tool apron half 100 is provided with an upper chamfer plane 111 and a lower chamfer plane 112 on the left side of the left tool apron half 100, wherein the inclination angles of the upper chamfer plane 111 and the lower chamfer plane 112 are set according to the structural design requirement, and in this example, the inclination angle is preferably 30-60 °. A key groove 120 for the insert key to be inserted is provided between the upper and lower chamfered surfaces. Two counter bores 130 are arranged in horizontal position on both sides of the key slot. An upper electrode support surface 141 and a lower electrode support surface 142 are provided in the middle region of the left tool half. A chip groove 150 is arranged on the right side of the electrode supporting surface; two bulges are arranged on the right side of the left half cutter seat and respectively provided with an upper chamfer surface 161 and a lower chamfer surface 162 which are matched with the upper chamfer surface and the lower chamfer surface of one end of the left half cutter seat. Two threaded holes 170 are formed in the right side of the half tool apron, and are respectively formed in a horizontal plane with the two countersunk holes 130. An end support ring 180 is arranged at the upper end of the left half cutter seat. Fig. 6 shows a mounting surface 190 provided on the side surface of the left holder half.

The right tool apron half 200 is shown in fig. 3, and has the same structural features as the left tool apron half 100.

The blade 300 is an integral blade as shown in fig. 4, and is divided into a left blade 300a and a right blade 300b, wherein the left blade and the right blade are arranged in a central symmetry manner. Left and

right end keys

310 and 320 are provided at the left and right ends of the blade, respectively. The left blade 300a is provided with a bevel cutting edge 331 and an end arc edge 332 which are symmetrical up and down, the right blade 300b is also provided with a bevel cutting edge and an end arc edge which are symmetrical up and down, and the bevel cutting edge and the end arc edge of the left blade and the end arc edge and the bevel cutting edge of the right blade jointly form an upper electrode cutting double edge and a lower electrode cutting double edge of the blade.

Use the utility model discloses during, the blade 300 is at first the buckle as shown in fig. 5 in half blade holder 100 on the left side, the left end key 310 of blade and the keyway 120 precision fit of half blade holder on the left side, and the key of blade closely cooperates the axial that realizes the blade spacing with the keyway on half blade holder on the left side. The right side of the blade is precisely matched with the two convex structures on the right side of the left half cutter holder to limit the left and right horizontal movement of the blade. The chip groove 150 of the left insert seat half forms a first chip hole with the side of the insert as shown in fig. 7.

Further, the right tool apron half 200 is split to the left tool apron half 100 to which the insert 300 has been mounted. The right upper and lower convex structure chamfer surfaces 261 and 262 of the right half cutter seat are respectively matched with the left upper chamfer surface 111 and the lower chamfer surface 112 of the left half cutter seat. At the other end, the key slot 220 of the right tool apron half is precisely matched with the right key 320 of the blade, the upper and

lower chamfers

211 and 212 on the left side of the right tool apron half are respectively and closely matched with the upper and

lower chamfers

161 and 162 on the right side of the left tool apron half, and the horizontal and axial limiting of the tool apron half and the blade are realized by utilizing the mutual snap fit between the blade and the left tool apron and the right tool apron. The chip groove 250 of the right insert seat half and the side surface of the insert form a second chip removal hole as shown in fig. 7. The upper

electrode supporting surfaces

141 and 241 of the left half tool apron and the right half tool apron and the upper electrode cutting double edges of the blades form an upper electrode cutting groove; the lower electrode supporting surfaces 142 and 242 of the left and right tool apron and the lower electrode cutting double edges of the insert constitute a lower electrode cutting groove. The countersunk holes 130 and 170 of the left tool apron half correspond to the countersunk

holes

230 and 270 of the right tool apron half one to one, respectively, as shown in fig. 8. The left and right half tool holders are fastened and locked by 4 hexagon socket head bolts 400 through the counter bores and the threaded holes, respectively, so that the sharpening tool is completely positioned, and the left half tool holder 100, the blade 300 and the right half tool holder 200 form a complete and integrated split sharpening tool as shown in fig. 6. When the sharpening tool is installed with the sharpener, the installation surfaces 190 and 290 of the side surfaces of the left half tool apron and the right half tool apron are installed and matched with the sharpener to drive the sharpening tool to rotate; the drive of the sharpener exerts a horizontal support to the sharpening tool through the end support rings 180 and 280, limiting the sharpening tool to a horizontal position as shown in figure 8.

When the electrode is ground, the axes of the worn upper electrode and the lower electrode are opposite to the axis of the grinding cutter, the upper electrode is in contact with the upper electrode cutting groove of the cutter, the lower electrode is in contact with the lower electrode cutting groove of the cutter, the grinding cutter rotating at high speed cuts and polishes the end faces of the upper electrode and the lower electrode, and the end faces of the worn upper electrode and the worn lower electrode are ground; the electrode scraps cut off are discharged by the first chip discharge groove and the second chip discharge groove, so that the electrode grinding process is stable and smooth.

When the blade is worn and needs to be replaced, the split type sharpening tool is detached from the sharpener, the left half cutter holder 100, the blade 200 and the right half cutter holder 300 are detached by unscrewing the hexagon socket head cap screws, the worn blade 300 is replaced by a new blade and then is installed on the left half cutter holder again, the upper right cutter holder is split again, the hexagon socket head screws are installed on the upper right cutter holder and are fastened, and then the blade is installed on the sharpener, so that the replacement of the blade is realized.

Example 2

The utility model provides a split type welding electrode coping cutter, coping cutter can cut and restore the flat electrode end face appearance of concave cambered surface, as shown in figures 9-17, include: the left tool apron half 100, the right tool apron half 200, the insert 300 and the hexagon socket head cap screw 400 are shown in fig. 9. In order to reduce the manufacturing cost, the present embodiment preferably adopts the same structural design for the left tool apron half 100 and the right tool apron half 200, and for better describing the present embodiment, the left tool apron half and the right tool apron half are numbered differently.

As shown in fig. 10, the left tool holder half 100 is provided with a key 110 on the left side of the left tool holder half 100. The counter bore 120 is formed vertically from the side of the left tool holder half and passes through the key 110. An upper electrode support surface 131 and a lower electrode support surface 132 are provided in the inner region of the left tool half. A chip groove 140 is arranged on the right side of the electrode supporting surface; the right end of the left half cutter seat is provided with an upper convex structure 151 and a lower convex structure 152. And a threaded hole 160 is formed in the right side of the left half cutter seat, and the threaded hole and the left countersunk hole 120 are respectively positioned on the same horizontal plane. An end support ring 170 is provided at the upper end of the left tool apron half. Fig. 16 shows a mounting surface 180 provided on the side surface of the left insert seat half.

The right tool apron half 200 is shown in fig. 11, and has the same structural features as the left tool apron half 100.

The blade 300 is a one-piece blade as shown in fig. 12, and is divided into a left blade 300a and a right blade 300b, wherein the left blade and the right blade are arranged in a staggered manner and opposite to each other with respect to the center of the blade. A left key groove 320 and a right key groove 340 are respectively arranged at the left end and the right end of the blade; the upper and lower ends of the left key groove are respectively provided with a left upper stepped structure 311 and a left lower stepped structure 312, and the upper and lower ends of the right key groove are respectively provided with a right upper stepped structure 331 and a right lower stepped structure 332. The left blade 300a is provided with a bevel edge 351, a concave arc edge 352 and a plane edge 353 which are vertically symmetrical, and the right blade 300b is also provided with a bevel edge, a concave arc edge and a plane edge which are vertically symmetrical, wherein the cutting edges of the left and right blades are connected with each other to form an upper electrode cutting double edge and a lower electrode cutting double edge of the blade as shown in fig. 13.

When using the present invention, the insert 300 is first installed in the left tool holder half 100 as shown in fig. 14, and the key groove 320 of the left end of the insert is precisely matched with the key 110 of the left tool holder half. The upper and lower stepped

structures

331 and 332 of the right insert 300b are closely fitted with the upper and lower two raised

structures

151 and 152 of the left insert seat, thereby restricting the left and right horizontal movements and the up and down axial movements of the insert. The flute 140 of the left tool half insert pocket forms a first row of cutting holes with the side of the insert as shown in fig. 17.

Further, the right tool apron half 200 is split to the left tool apron half 100 to which the insert 300 has been mounted. The left key 210 of the right tool apron half is precisely matched with the right key groove 340 of the blade, and the upper and lower

convex structures

251 and 252 on the right side of the right tool apron half are precisely matched with the upper and lower stepped

structures

311 and 312 on the left side of the blade respectively to limit the relative movement of the right tool apron half to the horizontal direction and the axial direction. The chip groove 240 of the right insert seat and the side surface of the insert form a second chip removal hole as shown in fig. 17. The upper

electrode supporting surfaces

131 and 231 of the left half tool apron and the right half tool apron and the upper electrode cutting double edges of the blades form an upper electrode cutting groove; the lower electrode supporting surfaces 133 and 233 of the left and right tool apron and the lower electrode cutting double edges of the insert constitute a lower electrode cutting groove. The countersunk holes 120 and 160 of the left tool apron half correspond to the countersunk

holes

220 and 260 of the right tool apron half in a one-to-one manner, as shown in fig. 16. The left and right half tool holders are fastened and locked by 2 hexagon socket head bolts through the counter bores and the threaded holes, so that the sharpening tool is completely positioned, and the left half tool holder 100, the blade 300 and the right half tool holder 200 form a complete integrated split sharpening tool as shown in fig. 16. When the sharpening tool is installed with the sharpener, the installation surfaces 180 and 280 on the side surfaces of the left half tool apron and the right half tool apron are installed and matched with a device for driving the tool by the sharpener so as to drive the sharpening tool to rotate; the drive of the sharpener exerts a horizontal support to the sharpening tool through the end support rings 170 and 270, limiting the sharpening tool to a horizontal position as shown in figure 17.

The electrode thinning and blade replacement process of this example 2 is similar to that of example 1.

The foregoing is merely a preferred embodiment of the present invention, and it is to be understood that the terms "upper", "lower", "left", "right", "end" and "horizontal" etc. indicating the orientation and position in the examples are based on the orientation indicated in the drawings, and are intended merely to facilitate a clearer and more concise description of the invention, and are not intended to limit the specific orientation that the components or elements of the sharpening tool must have. It should be noted that, for a person skilled in the art, several modifications can be made without departing from the method of the invention, and these modifications should also be considered as the scope of protection of the invention.

Claims

1. The utility model provides a split type welding electrode coping cutter, includes blade holder and blade, its characterized in that, the blade holder by two half blade holders about the amalgamation form, the blade buckle be in half blade holder on to through two half blade holder amalgamations and fastening after-fixing in the blade holder.

2. The sharpening tool for the split welding electrode according to claim 1, wherein the two half tool holders have the same structure, and the left and right ends of the blade are respectively fastened to the half tool holders.

3. The split type welding electrode grinding tool according to claim 2, wherein the half holder has an upper chamfer and a lower chamfer at one end thereof and a key groove between the chamfers for inserting a key of the blade, and the other end of the half holder has an upper protrusion and a lower protrusion having a chamfer corresponding to the chamfer of the one end of the half holder, so that the two half holders are coupled to each other in a left-right manner, the blade is a one-piece double-edged blade, and keys are provided at both ends of the blade.

4. The split type welding electrode grinding tool according to claim 2, wherein a key is arranged at one end of the half cutter holder, two protruding structures are arranged at the other end of the half cutter holder, the blade is an integrated double-edged blade, key grooves and stepped structures are arranged at two ends of the blade, and the key and the two protruding structures are respectively embedded into the key grooves and the stepped structures at the upper side and the lower side of the key grooves.

5. The split type welding electrode grinding tool according to claim 1, wherein the two ends of one half tool apron are respectively provided with an upper chamfer and a lower chamfer and a key groove which is arranged between the two chamfers and used for inserting a blade key, the two ends of the other half tool apron are respectively provided with a protruding structure at the upper end and the lower end, the protruding structures are provided with chamfers matched with the chamfers at the two ends of the one half tool apron, the two half tool aprons are split left and right, the blade is an integrated double-edged blade, and the two ends of the blade are provided with keys.

6. The split type welding electrode grinding tool according to claim 1, wherein two ends of one half tool apron are respectively provided with a key, two ends of the other half tool apron are respectively provided with two protruding structures, the blade is an integrated double-edged blade, two ends of the blade are provided with a key groove and stepped structures on the upper side and the lower side of the key groove, and the key of the half tool apron and the two protruding structures are respectively embedded into the key groove and the stepped structures.

7. The split welding electrode grinding tool according to any one of claims 1 to 6, wherein an end support ring integrally connected with the tool holder is further provided at the upper end of the half tool holder, and two mounting surfaces are symmetrically provided on the outer wall of the tool holder.

8. The split type welding electrode grinding tool according to any one of claims 1 to 6, wherein the half tool post is provided with a countersunk hole and a threaded hole, and the left half tool post and the right half tool post are fastened and spliced with the threaded hole of the other half tool post through the countersunk hole of one half tool post by fastening bolts.