A superhard cutter welding device convenient for positioning

Abstract

The application discloses a superhard cutter welding device convenient for positioning and relates to the technical field of welding equipment.The device comprises a welding assembly, which comprises a high-frequency brazing machine body, the surface of the high-frequency brazing machine body being fixed with a heating coil, and a positioning assembly arranged on the surface of the high-frequency brazing machine body, wherein the positioning assembly comprises a pushing piece arranged below the heating coil, a feeding piece arranged on the top of the pushing piece, and a cutter bar positioning piece arranged on one side of the top of the feeding piece.The device adopts safety interlocking positioning logic, forcibly prevents errors by mechanical structure, and cannot send the heating coil into the device when precision centering and butt joint are not completed, so that the problems of mispositioning welding, single-side virtual welding and uneven welding gap are avoided, the guide taper pin is arranged on the cutter bar cover, the 45-degree lead-in chamfer is arranged on the pin hole of the cutter head cover, the coaxiality of the cutter bar and the superhard cutter head is forcibly corrected, the welding end faces of the cutter bar and the superhard cutter head are completely parallel and are attached, and the qualified rate of superhard cutter welding products and the service life of the cutter are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, and in particular to a welding device for superhard cutting tools that is easy to position. Background Technology

[0002] The superhard tool welding device is a special tooling equipment for high-frequency brazing in the mass production process of superhard tools. It mainly realizes the clamping and alignment of metal tool holders with diamond and cemented carbide superhard tool tips, automatic feeding and high-frequency fusion welding. Traditional simple split welding tooling can complete simple clamping and welding operations of single tools, which can only meet the needs of small batch and low-precision tool trial production.

[0003] Traditional tool welding fixtures rely entirely on manual fine-tuning of the tool holder and tool head alignment, making it difficult to uniformly control coaxiality. During welding, misalignment and weld seam offset are prone to occur, resulting in the direct scrapping of a large number of workpieces. Workpieces can still be fed into the heating coil before they have completed precise fitting and correction. Misaligned workpieces entering the welding station will cause defects such as incomplete welding and slag inclusions, and are also prone to bumping and damaging the heating coil. The manual intervention steps are numerous and it is difficult to adapt to the large-scale continuous brazing production of superhard tools. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problems existing in the above and / or existing easy-to-position superhard tool welding devices, the present invention is proposed.

[0006] Therefore, the problem that this invention aims to solve is that the alignment of the tool holder and the tool head relies entirely on manual fine-tuning, making it difficult to uniformly control the coaxiality. Misaligned workpieces entering the welding station will produce defects such as incomplete welding and slag inclusions.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a superhard tool welding device for easy positioning, comprising a welding assembly including: a high-frequency brazing machine body with a heating coil fixed on its surface; a positioning assembly disposed on the surface of the high-frequency brazing machine body, including: a pusher disposed below the heating coil; a feeder disposed on top of the pusher; a tool bar positioning member disposed on one side of the top of the feeder; and a tool head positioning member disposed on the other side of the top of the feeder. The tool bar positioning member is used to position and install the tool bar, the tool head positioning member is used to position and install the tool head, the feeder is used to connect the tool bar and the tool head, and the feeder pushes the connected tool bar and tool head into the heating coil for welding.

[0008] As a preferred embodiment of the superhard tool welding device for easy positioning described in this invention, the pushing component includes: a support plate, which is fixed to the surface of the high-frequency brazing machine body by bolts; slide rails are fixed on both sides of the top of the support plate; a first motor is fixed to the end of the support plate; a first screw is fixed to the output end of the first motor; a first threaded sleeve is threaded on the outer ring of the first screw; a locking groove is provided on the top of the support plate; and a slide seat is slidably fitted on the surface of the slide rail.

[0009] As a preferred embodiment of the superhard tool welding device for easy positioning described in this invention, the feeding component includes: a movable plate disposed on the top of the pushing component, a second motor fixed to the top of the pushing component, a second screw fixed to the output end of the second motor, a second threaded sleeve fitted on the outer ring of the second screw, sliding sleeves fixed on both sides of the second threaded sleeve, and a sliding rod slidably connected to the inner cavity of the sliding sleeve.

[0010] As a preferred embodiment of the superhard tool welding device for easy positioning described in this invention, wherein: mounting plates are fixed on both sides of the top of the movable plate, the slide rod is fixed between the two mounting plates, a track plate is fixed on the top of the movable plate, and a through hole is opened on one side of the top of the movable plate.

[0011] As a preferred embodiment of the superhard tool welding device for easy positioning described in this invention, the tool shank positioning component includes: a tool shank seat disposed on the top of the feeding component, a first limiting frame fixed on both sides of the tool shank seat, a driving component disposed on one side of the tool shank seat, a locking component disposed on the surface of the driving component, and a clamping component disposed on the top of the tool shank seat.

[0012] As a preferred embodiment of the superhard tool welding device for easy positioning described in this invention, the driving component includes: a guide rod slidably connected to one side of the tool holder, a pressure plate fixed to one side of the guide rod, a buffer pad fixed to one side of the pressure plate, an inclined block fixed to the other side of the pressure plate, an inclined hole formed on the surface of the inclined block, and a first tension spring sleeved on the outer ring of the guide rod, one end of the first tension spring fixed to the surface of the tool holder, and the other end of the first tension spring fixed to the surface of the pressure plate.

[0013] As a preferred embodiment of the superhard tool welding device for easy positioning described in this invention, the locking component includes: two follower rods disposed on both sides of the inclined block, with a roller rotatably connected between the tops of their opposite sides, a locking plate fixed to the bottom of the follower rod, and a spring sleeved on the top of the outer ring of the follower rod.

[0014] As a preferred embodiment of the superhard tool welding device for easy positioning described in this invention, the clamping member includes: a tool holder cover, disposed on the top of the tool holder seat, with first sliding plates fixed on both sides of the tool holder cover, rollers fixed on the side of the end of the first sliding plates, and guide cone pins fixed on the surface of the tool holder cover.

[0015] As a preferred embodiment of the superhard tool welding device for easy positioning described in this invention, the tool positioning component includes: a tool head seat fixed to the top of a support plate, second limiting frames fixed on both sides of the tool head seat, a second tension spring fixed to the top of the tool head seat, and a tool head cover fixed to the top of the second tension spring.

[0016] As a preferred embodiment of the superhard tool welding device for easy positioning described in this invention, a pin hole is provided on one side of the tool head cover, and a second sliding plate is fixed at both ends of the tool head cover.

[0017] The beneficial effects of this invention are as follows: By adopting a safety interlocking positioning logic, the feeding component is locked in the initial state of tool feeding and cannot move towards the heating coil. Only when the tool holder and the end face of the tool head are fully in contact and the guide cone pin is fully inserted into the pin hole to complete the coaxial correction, the inclined block and inclined hole push the roller to lift the locking plate and disengage from the locking groove to unlock the feed path. Relying on the mechanical structure to forcibly prevent errors, the equipment cannot feed into the heating coil when the precise alignment and docking are not completed, avoiding the scrap problems of misaligned welding, single-sided incomplete welding, and uneven weld gap, and greatly reducing the consumption of raw materials for superhard tools.

[0018] The tool holder cap is equipped with a guide tapered pin, and the pin hole of the tool head cap has a 45° guide chamfer. When the tool holder is fed to the tool head for docking, the tapered pin is automatically guided into the pin hole, forcibly correcting the coaxiality of the tool holder and the superhard tool head, so that the welding end faces of the two are completely parallel and fit together, and the brazing gap is uniform. This effectively reduces defects such as incomplete welding, insufficient material, misaligned welding, and insufficient weld strength, and greatly improves the qualification rate of superhard tool welding products and tool life. There are no photoelectric, proximity switch, or electronic control sensing elements. The mechanical locking / unlocking is driven entirely by the workpiece docking status. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A structural diagram of a welding device for superhard cutting tools designed for easy positioning.

[0021] Figure 2 A structural diagram of the positioning component of a welding device for superhard cutting tools designed for easy positioning.

[0022] Figure 3 A structural diagram of the pusher component of a welding device for superhard cutting tools designed for easy positioning.

[0023] Figure 4 A structural diagram of the feeding component of a welding device for superhard cutting tools designed for easy positioning.

[0024] Figure 5 Structural diagram of the tool holder positioning component and the tool head positioning component of the welding device for superhard cutting tools to facilitate positioning.

[0025] Figure 6 Exploded view of the tool holder positioning component and the tool head positioning component of the superhard tool welding device for easy positioning.

[0026] Figure 7 An exploded view of the tool holder positioning component and the tool head positioning component from another perspective of the superhard tool welding device for easy positioning. In the diagram: 1. Welding assembly; 11. High-frequency brazing machine body; 12. Heating coil; 13. Control panel; 2. Positioning assembly; 21. Pushing component; 211. Support plate; 212. Slide rail; 213. Slide block; 214. First motor; 215. First threaded sleeve; 216. First screw; 217. Locking groove; 22. Feeding component; 221. Moving plate; 222. Second motor; 223. Second screw; 224. Second threaded sleeve; 225. Through hole; 226. Track plate; 227. Slide rod; 228. Slide sleeve; 23. Tool holder positioning component; 231. Tool holder seat; 2311. First limiting frame; 232 2321. Drive component; 2322. Pressure plate; 2323. Inclined block; 2324. Inclined hole; 2325. Guide rod; 2326. First tension spring; 2327. Buffer pad; 233. Locking component; 2331. Follower rod; 2332. Spring; 2333. Locking plate; 2334. Roller; 234. Clamping component; 2341. Tool holder cover; 2342. First slide plate; 2343. Roller; 2344. Guide cone pin; 235. Anti-slip pad; 24. Tool head positioning component; 241. Tool head seat; 242. Tool head cover; 243. Pin hole; 244. Second slide plate; 245. Second limit frame; 246. Second tension spring. Detailed Implementation

[0027] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0030] Example 1, referring to Figure 1 and Figure 2 This is the first embodiment of the present invention, which provides a superhard tool welding device that is easy to position, including a welding component 1 and a positioning component 2.

[0031] Specifically, welding component 1 includes: a high-frequency brazing machine body 11, on which a heating coil 12 is fixed. The heating coil 12 is a water-cooled copper coil with an inner diameter of 32mm, a working frequency of 20kHz, and a heating temperature range of 500~850℃. It is suitable for brazing 45# steel tool holders and carbide tool tips with silver base. A control panel 13 is fixed on the surface of the high-frequency brazing machine body 11.

[0032] Specifically, the positioning component 2 is disposed on the surface of the high-frequency brazing machine body 11 and includes: a pusher 21 disposed below the heating coil 12, a feeder 22 disposed on top of the pusher 21, a tool bar positioning component 23 disposed on one side of the top of the feeder 22, and a tool head positioning component 24 disposed on the other side of the top of the feeder 22. The tool bar positioning component 23 is used to position and install the tool bar, the tool head positioning component 24 is used to position and install the tool head, and the feeder 22 is used to connect the tool bar and the tool head. The feeder 22 pushes the connected tool bar and tool head into the heating coil 12 for welding.

[0033] Example 2, refer to Figures 2-6 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0034] Specifically, the pusher 21 includes: a support plate 211, which is fixed to the surface of the high-frequency brazing machine body 11 by bolts; slide rails 212 are fixed on both sides of the top of the support plate 211; a first motor 214 is fixed to the end of the support plate 211; a first screw 216 is fixed to the output end of the first motor 214; vertical plates for supporting the first screw 216 are fixed to both ends of the support plate 211; the first screw 216 is rotatably connected to the surface of the vertical plate by bearings; a first threaded sleeve 215 is threaded on the outer ring of the first screw 216; a locking groove 217 is opened on the top of the support plate 211; the locking groove 217 is located directly below the locking plate 2333; the bottom of the locking plate 2333 extends into the inner cavity of the locking groove 217 and slides in connection with its inner wall; a slide seat 213 is slidably fitted on the surface of the slide rail 212; the sliding fit clearance between the slide rail 212 and the slide seat 213 is 0.03~0.06mm.

[0035] Specifically, the feeding component 22 includes: a movable plate 221, which is fixed to the top of the slide block 213; a second motor 222 is fixed to the top of the pushing component 21; a second screw 223 is fixed to the output end of the second motor 222; a second threaded sleeve 224 is threaded onto the outer ring of the second screw 223; slide sleeves 228 are fixed on both sides of the second threaded sleeve 224; a slide rod 227 is slidably connected to the inner cavity of the slide sleeve 228; the sliding fit clearance between the slide rod 227 and the slide sleeve 228 is 0.04mm, with no jamming.

[0036] Furthermore, the first motor 214 and the second motor 222 are both closed-loop stepper motors with a single-step feed accuracy of 0.01mm. The lead of the first screw 216 and the second screw 223 is 4mm. The second threaded sleeve 224 of the feeder 22 has a maximum effective feed stroke of 200mm, which is compatible with the docking of tools of various lengths.

[0037] Specifically, mounting plates are fixed on both sides of the top of the movable plate 221, the slide rod 227 is fixed between the two mounting plates, the top of the movable plate 221 is fixed with a track plate 226, and a through hole 225 is opened on one side of the top of the movable plate 221.

[0038] Specifically, the tool holder positioning component 23 includes: a tool holder 231, which is fixed to one side of the top of the second threaded sleeve 224. A first limiting frame 2311 is fixed on both sides of the tool holder 231. A follower rod 2331 is slidably connected to the inner cavity of the inclined hole 2323. A driving component 232 is provided on one side of the tool holder 231. A locking component 233 is provided on the surface of the driving component 232. A clamping component 234 is provided on the top of the tool holder 231.

[0039] Specifically, the driving component 232 includes: a guide rod 2324, which is slidably connected to one side of the tool holder 231. A pressure plate 2321 is fixed to one side of the guide rod 2324. A buffer pad 2326 is fixed to one side of the pressure plate 2321. An inclined block 2322 is fixed to the other side of the pressure plate 2321. An inclined hole 2323 is opened on the surface of the inclined block 2322. A first tension spring 2325 is sleeved on the outer ring of the guide rod 2324. One end of the first tension spring 2325 is fixed to the surface of the tool holder 231, and the other end of the first tension spring 2325 is fixed to the surface of the pressure plate 2321.

[0040] Specifically, the locking component 233 includes: a follower rod 2331, which is disposed on both sides of the inclined block 2322, and there are two of them; one end of the spring 2332 is fixed to the top of the locking plate 2333, and the other end of the spring 2332 is fixed to the top of the second threaded sleeve 224; a roller 2334 is rotatably connected between the tops of their opposite sides; the roller 2334 is rolled and connected to the inner wall of the inclined hole 2323; the bottom of the follower rod 2331 is fixed with the locking plate 2333; the top of the outer ring of the follower rod 2331 is fitted with the spring 2332; and the locking component 233 is located in the inner cavity of the through hole 225, which provides movement space for the locking component 233.

[0041] Specifically, the top locking groove 217 of the support plate 211 has a depth of 12mm. When in standby mode, the locking plate 2333 sinks and embeds itself into the groove by 10mm, completely restricting the longitudinal feed of the slide block 213. The spring 2332 has a wire diameter of 0.7mm and a preload of 50N. Under normal conditions, it pulls the locking plate 2333 down to lock it. The inclined plane of the inclined hole 2323 on the inclined block 2322 has an inclination angle of 45°. The outer diameter of the roller 2334 is 8mm. The inclined block 2322 effectively moves backward by 8mm. During this stroke, the roller 2334 completely lifts the locking plate 2333, disengaging it from the locking groove 217 to complete the feed and unlocking. The entrance of the locking groove 217 is provided with a 45° guide chamfer to ensure that the locking plate 2333 sinks and resets smoothly without jamming.

[0042] Specifically, the clamping component 234 includes: a tool holder cover 2341, which is disposed on the top of the tool holder seat 231. A first slide plate 2342 is fixed on both sides of the tool holder cover 2341. A roller 2343 is fixed on the side of the end of the first slide plate 2342. A track plate 226 is disposed at the corresponding position of the roller 2343. A rolling groove for the roller 2343 to roll is opened on the track plate 226. The rolling groove is divided into three sections. The front end of the rolling groove is horizontally high, the middle end is inclined downward, and the end end is horizontally low. A guide cone pin 2344 is fixed on the surface of the tool holder cover 2341.

[0043] Specifically, the cutter head positioning component 24 includes: a cutter head seat 241, which is fixed to the top of the support plate 211; a second limiting frame 245 is fixed on both sides of the cutter head seat 241; a second tension spring 246 is fixed on the top of the cutter head seat 241; and a cutter head cover 242 is fixed on the top of the second tension spring 246.

[0044] Furthermore, the cone angle of the guide cone pin 2344 is 45°, the clearance between the guide cone pin 2344 and the pin hole 243 is 0.02~0.05mm, the coaxiality tolerance of the tool bar and the tool head after the guide cone pin 2344 is fully inserted is ≤0.01mm, the welding end face contact gap is stably controlled at 0.03mm, the groove height difference of the track plate 226 is 10mm, the roller 2343 moves down 10mm to press the tool bar cover 2341, the preload of the second tension spring 246 is 60N, and the tool head cover 242 is continuously pressed down to limit the workpiece displacement, and the preload of the first tension spring 2325 is 70N, maintaining the inclined block 2322 in the standby front state.

[0045] Specifically, V-grooves are provided on the top of the tool holder 231 and the tool head holder 241, and on the top of the tool holder cover 2341 and the tool head cover 242. Anti-slip pads 235 are fixed on the inner walls of the V-grooves. Ball bearings are movably embedded on the anti-slip pads 235 on the inner walls of the tool head holder 241 and the tool head cover 242 to reduce the sliding friction during tool head assembly and disassembly.

[0046] Specifically, a pin hole 243 is provided on one side of the cutter head cover 242. The position of the pin hole 243 corresponds to the position of the guide cone pin 2344. The opening of the pin hole 243 is chamfered at 45°. A second slide plate 244 is fixed at both ends of the cutter head cover 242. A limit baffle is fixed at the bottom of the second slide plate 244 to limit the second slide plate 244 and prevent the second slide plate 244 and the cutter head cover 242 from falling off the top of the cutter head seat 241.

[0047] Example 3, referring to Figures 2-7 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0048] Furthermore, the mechanical safety interlocking logic is as follows: During standby loading, the two springs 2332 pull down the locking plate 2333, causing it to sink and embed into the locking groove 217 of the support plate 211. The slide 213 and the entire feeding component 22's axial feed channel are completely locked. Only when the second motor 222 drives the cutter bar to continuously push the cutter head, the cutter bar end face completely contacts the cutter head welding surface, and the guide cone pin 2344 is fully inserted into the pin hole 243 along the 45° chamfer, completing coaxial alignment, does the buffer pad 2326 pressurize and drive the pressure plate 2... 321. The inclined block 2322 moves backward by 8mm, and the 45° inclined surface of the inclined hole 2323 pushes the roller 2334 upward. The two follower rods 2331 simultaneously lift the locking plate 2333. The locking plate 2333 completely disengages from the locking groove 217, and the feed lock is released. If the guide cone pin 2344 is not fully inserted and there is a gap on the end face, the inclined block 2322 cannot move backward sufficiently, and the locking plate 2333 will always be stuck in the locking groove 217. The first motor 214 cannot drive the workpiece to feed towards the heating coil 12, thus achieving purely mechanical forced error prevention.

[0049] Furthermore, the workpiece is synchronously clamped and positioned: the roller 2343 rolls along the three-section groove of the track plate 226, the high-position section tool holder cover 2341 is raised to facilitate manual loading and unloading; the middle inclined section presses down the roller 2343, synchronously pulling the tool holder cover 2341 down to clamp the tool holder; the tool head side relies on the second tension spring 246 to rebound and press down the tool head cover 242, and the first limit frame 2311 and the second limit frame 245 on both sides limit the radial displacement of the workpiece; the V-groove anti-slip pad 235 + the movable ball on the tool head side double limit, so that the tool holder and tool head have no axial or radial movement during the entire welding process.

[0050] Furthermore, the entire machine utilizes a high-temperature and wear-resistant material system, suitable for brazing high-temperature radiation and metal dust conditions: ① The support plate 211, slide 213, first screw 216, second screw 223, tool holder 231, tool head holder 241, tool holder cover 2341, and tool head cover 242 are all made of 45# steel with tempering and blackening for rust prevention; ② The guide cone pin 2344, roller 2334, roller 2343, and the inner balls of the tool head holder 241 and tool head cover 242 are all made of 45# steel with tempering and blackening for rust prevention. ③ GCr15 bearing steel, quenched and wear-resistant; ④ First tension spring 2325, second tension spring 246, and spring 2332 are all 65Mn high-temperature resistant spring steel, which can withstand short-term radiation high temperature of 300℃ without elasticity reduction; ⑤ Buffer pad 2326 and anti-slip pad 235 are both high-temperature resistant silicone rubber, which can withstand short-term heat radiation of 850℃; ⑥ Track plate 226, first limit frame 2311, and second limit frame 245 are all glass fiber reinforced ABS, which are heat-insulating and resistant to high-temperature deformation.

[0051] It should be noted that the emergency handling of common faults is as follows: (1) The workpiece is not properly connected but the feed is unlocked: clean the metal lumps on the surface of the inclined hole 2323 and the roller 2334, and replace the first tension spring 2325 with reduced elasticity; (2) The workpiece is fully attached to the guide cone pin 2344 and the locking plate 2333 cannot be lifted to unlock: clean the debris inside the locking groove 217, and check the roller 2334 for jamming and the inclined block 2322 for obstructed sliding; (3) The guide cone pin 2344 cannot be smoothly inserted into the pin hole. 243. Welding coaxial misalignment: Clean the residue in pin hole 243, correct the alignment reference of tool holder 231 and tool head holder 241, and replace the guide cone pin 2344 with excessive wear; (4) Feeding / pushing screw feed jamming: Clean the dust and residue inside slide bar 227 and slide sleeve 228, and add high temperature resistant grease; (5) Welding continues to have single-sided false welding and uneven weld gap: Check the clamping force of second tension spring 246, and recalibrate the coaxial fit accuracy of guide cone pin 2344 and pin hole 243.

[0052] When in use, the tool bar positioning component 23 and the tool head positioning component 24 return to their initial state, the locking plate 2333 of the locking component 233 falls and locks into the top locking groove 217 of the support plate 211, the feeding component 22 is locked and cannot move forward, the roller 2343 on the track plate 226 stops at the high position of the track, the tool bar cover 2341 is lifted, the clamping port is fully open, and the tool bar and tool head can be placed freely. The main power supply of the equipment is connected, and the whole machine is started through the control panel 13 and enters the standby mode.

[0053] Manually lift the cutter head cover 242 upwards, stretch the second tension spring 246, and place the ultra-hard cutter head horizontally in the V-shaped groove at the top of the cutter head seat 241. The anti-slip pad 235 in the groove fits against the outer wall of the cutter head, making the cutter head fit against the surface of the ball. Release the cutter head cover 242, and the second tension spring 246 rebounds and presses the cutter head cover 242 down. The second limit frames 245 and the second slide plate 244 on both sides limit the left and right displacement of the cutter head. The cutter head cover 242 has a pre-drilled pin hole 243 with a 45° chamfer facing the cutter bar side, completing the pre-positioning and clamping of the cutter head.

[0054] With the cutter bar cover 2341 in the raised state, the cutter bar is placed horizontally into the V-shaped groove of the cutter bar seat 231. The anti-slip pad 235 inside the groove adheres to the surface of the cutter bar. At this time, the locking plate 2333 is locked inside the locking groove 217, and the feeding component 22 is locked as a whole, unable to feed towards the heating coil 12. The pressure plate 2321 and the inclined block 2322 of the drive component 232 are kept in the forward initial position under the action of the first tension spring 2325.

[0055] The control panel 13 starts the second motor 222, and the second screw 223 rotates, driving the second threaded sleeve 224 to move smoothly along the slide bar 227 to the cutter head seat 241, driving the entire set of cutter bar positioning parts 23 to feed synchronously.

[0056] The roller 2343 slides along the groove of the track plate 226, the front track moves horizontally, the middle track presses down on the roller 2343, pulls the tool bar cover 2341 down to press the tool bar, and the first limit frame 2311 prevents the tool bar cover 2341 from shaking.

[0057] After the end face of the tool holder is in contact with the welding surface of the tool head, it is continuously pushed up in small increments, squeezing the buffer pad 2326 and causing the pressure plate 2321 and the inclined block 2322 to move backward. The guide pin 2344 at the front end of the tool holder cover 2341 is fully inserted into the pin hole 243 with the help of the 45° chamfer of the pin hole 243, pressing the tool head cover 242. The tool holder and the welding end face of the tool head are fully in contact and coaxially positioned, completing the coaxial correction and the welding end face is fully in contact.

[0058] If the guide cone pin 2344 is not fully inserted or there is a gap on the end face, the wedge block 2322 cannot move backward sufficiently, the locking plate 2333 will remain locked, and the welding feed cannot be executed, thus preventing misaligned welding from being scrapped from the hardware level.

[0059] The inclined block 2322 moves backward, the inclined surface of the inclined hole 2323 pushes the roller 2334 and the follower rod 2331 upward, compressing the spring 2332 and the locking plate 2333 simultaneously moving upward and disengaging from the locking groove 217, the feeding part 22 is released from locking and can move horizontally toward the heating coil 12.

[0060] The first motor 214 is started by the control panel 13. The first screw 216 drives the first threaded sleeve 215, which in turn drives the slide block 213 and the feeding part 22 to move horizontally along the slide rail 212. The docked tool bar and tool head are sent into the center of the heating coil 12. The high-frequency brazing machine body 11 is turned on. The heating coil 12 generates a high-frequency magnetic field, which heats the docking weld of the tool bar and tool head in a concentrated manner, thus completing the brazing fusion.

[0061] After welding heating is completed, the first motor 214 is reversed, and the entire feeding mechanism returns to the initial docking position along the slide rail 212. The second motor 222 is started in reverse, and the second threaded sleeve 224 drives the tool holder positioning component 23 away from the tool head seat 241 to reset. The welded tool is pulled out directly. The ball bearings embedded in the tool head seat 241 and tool head cover 242 reduce friction. The roller 2343 returns to the high position of the track plate 226. The tool holder cover 2341 is lifted to release the tool holder, and the tool smoothly leaves the positioning groove. The single welding process is completed. The above welding steps are repeated to continuously complete the welding of superhard tools in batches.

[0062] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A welding device for superhard cutting tools that facilitates positioning, characterized in that: The assembly includes a welding component (1), comprising: a high-frequency brazing machine body (11) with a heating coil (12) fixed on its surface; a positioning component (2) disposed on the surface of the high-frequency brazing machine body (11), comprising: a pusher (21) disposed below the heating coil (12); a feeder (22) disposed on the top of the pusher (21); a tool bar positioning component (23) disposed on one side of the top of the feeder (22); and a tool head positioning component (24) disposed on the other side of the top of the feeder (22). The tool bar positioning component (23) is used to position and install the tool bar, the tool head positioning component (24) is used to position and install the tool head, the feeder (22) is used to connect the tool bar and the tool head, and the feeder (22) pushes the connected tool bar and the tool head into the heating coil (12) for welding.

2. The superhard tool welding device for easy positioning as described in claim 1, characterized in that: The pusher (21) includes: a support plate (211) which is fixed to the surface of the high-frequency brazing machine body (11) by bolts. Slide rails (212) are fixed on both sides of the top of the support plate (211). A first motor (214) is fixed at the end of the support plate (211). A first screw (216) is fixed at the output end of the first motor (214). A first threaded sleeve (215) is threaded on the outer ring of the first screw (216). A locking groove (217) is opened on the top of the support plate (211). A slide seat (213) is slidably fitted on the surface of the slide rail (212).

3. The superhard tool welding device for easy positioning as described in claim 1, characterized in that: The feeding component (22) includes: a movable plate (221) disposed on the top of the pusher (21), a second motor (222) fixed on the top of the pusher (21), a second screw (223) fixed at the output end of the second motor (222), a second threaded sleeve (224) threaded on the outer ring of the second screw (223), and sliding sleeves (228) fixed on both sides of the second threaded sleeve (224), and a sliding rod (227) slidably connected to the inner cavity of the sliding sleeve (228).

4. The superhard tool welding device for easy positioning as described in claim 3, characterized in that: Mounting plates are fixed on both sides of the top of the movable plate (221), the slide rod (227) is fixed between the two mounting plates, a track plate (226) is fixed on the top of the movable plate (221), and a through hole (225) is opened on one side of the top of the movable plate (221).

5. The superhard tool welding device for easy positioning as described in claim 1, characterized in that: The tool holder positioning component (23) includes: a tool holder seat (231) disposed on the top of the feeding component (22), a first limiting frame (2311) fixed on both sides of the tool holder seat (231), a driving component (232) disposed on one side of the tool holder seat (231), a locking component (233) disposed on the surface of the driving component (232), and a clamping component (234) disposed on the top of the tool holder seat (231).

6. The superhard tool welding device for easy positioning as described in claim 5, characterized in that: The driving component (232) includes: a guide rod (2324) slidably connected to one side of the tool holder (231), a pressure plate (2321) fixed to one side of the guide rod (2324), a buffer pad (2326) fixed to one side of the pressure plate (2321), a wedge block (2322) fixed to the other side of the pressure plate (2321), a wedge hole (2323) opened on the surface of the wedge block (2322), a first tension spring (2325) sleeved on the outer ring of the guide rod (2324), one end of the first tension spring (2325) fixed to the surface of the tool holder (231), and the other end of the first tension spring (2325) fixed to the surface of the pressure plate (2321).

7. The superhard tool welding device for easy positioning as described in claim 6, characterized in that: The locking component (233) includes: a follower rod (2331), which is disposed on both sides of the inclined block (2322), and there are two of them. A roller (2334) is rotatably connected between the tops of their opposite sides. A locking plate (2333) is fixed to the bottom of the follower rod (2331), and a spring (2332) is sleeved on the top of the outer ring of the follower rod (2331).

8. The superhard tool welding device for easy positioning as described in claim 5, characterized in that: The clamping member (234) includes: a tool bar cover (2341) disposed on the top of the tool bar seat (231), with a first slide plate (2342) fixed on both sides of the tool bar cover (2341), a roller (2343) fixed on the side of the end of the first slide plate (2342), and a guide cone pin (2344) fixed on the surface of the tool bar cover (2341).

9. The superhard tool welding device for easy positioning as described in claim 1, characterized in that: The blade positioning component (24) includes: a blade holder (241) fixed to the top of the support plate (211), a second limiting frame (245) fixed on both sides of the blade holder (241), a second tension spring (246) fixed on the top of the blade holder (241), and a blade cover (242) fixed on the top of the second tension spring (246).

10. The superhard tool welding device for easy positioning as described in claim 9, characterized in that: A pin hole (243) is provided on one side of the cutter head cover (242), and a second sliding plate (244) is fixed at both ends of the cutter head cover (242).

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