A surface grinding device for machining an outer hexagonal bolt

Abstract

The application relates to the technical field of bolt processing, in particular to a surface grinding device for hexagonal bolt processing, which comprises a machine base, two grinding mechanisms, two clamping mechanisms, a driving mechanism and a buffer mechanism. The clamping mechanism comprises a transverse moving frame and a moving seat, the transverse moving frame is internally provided with a transverse moving screw sliding table, the moving seat is provided with a three-jaw chuck, the side wall of the moving seat is provided with a suspension seat, the suspension seat is provided with a positioning frame and a locking assembly for locking the positioning frame, the top of the positioning frame is provided with a positioning clamp, the transverse moving frame is arranged on the driving mechanism, the moving seat is arranged on the sliding table of the transverse moving screw sliding table, the driving mechanism is arranged on the top of the machine base and located between the two grinding mechanisms, and the buffer mechanism is arranged on the top of the machine base and located between the two clamping mechanisms. The application does not need manual correction to make the two bolt thread segments bite each other, and the processing efficiency of fine grinding of the two bolts is improved.

Description

Technical Field

[0001] This invention relates to the field of bolt processing technology, specifically to a surface grinding device for processing external hexagonal bolts. Background Technology

[0002] An external hex bolt is a fastener consisting of a hexagonal head and a threaded rod. The thread on the threaded rod of an external hex bolt can be rough-machined by cutting and then fine-machined by grinding. That is, the precision of the thread formed on the threaded rod is improved by grinding through the mutual rotation between the grinding wheel and the threaded rod.

[0003] Chinese invention patent CN117415393B discloses a surface grinding device for machining external hexagonal bolts, including a base, a clamping mechanism, and a grinding mechanism. The clamping mechanism consists of two sets, one set for clamping a single bolt with a threaded section. The two bolts are symmetrically arranged and their threaded sections interlock. The grinding mechanism also consists of two sets, arranged side-by-side along the length of the base and located on either side of the bolt. One set of grinding mechanisms grinds a single bolt. This allows for simultaneous machining of both bolts, improving production efficiency. Furthermore, the interlocking of the two bolts ensures that the forces applied to each bolt by the two grinding mechanisms are in the same straight line and opposite in direction, resulting in balanced force on the bolt and improving the durability and connection quality of the threads formed after grinding.

[0004] However, the above-mentioned patent still has the following shortcomings in actual use: the patent can perform fine grinding on two bolts. Before fine grinding, the threaded sections of the two bolts need to be meshed with each other. The meshing of the threaded sections of the two bolts is checked by manual operation. The threaded sections produced by the rough machining of the bolts themselves have defects, which increases the difficulty of meshing the threaded sections of the two bolts, which increases the operation time and greatly reduces the efficiency of fine grinding of bolts. Summary of the Invention

[0005] To overcome the above deficiencies, the present invention provides a surface grinding apparatus for machining external hexagonal bolts, thereby solving the problem mentioned in the background art of how to improve the machining efficiency of simultaneously precision grinding two bolts.

[0006] The technical solution of this invention is:

[0007] A surface grinding apparatus for machining external hexagonal bolts includes a base and two grinding mechanisms symmetrically arranged on the top of the base along its width. It also includes two clamping mechanisms, a drive mechanism for driving the two clamping mechanisms to move in opposite directions, and a buffer mechanism for simultaneously providing buffering force to the two bolts. Each clamping mechanism includes a transverse frame and a movable seat. The transverse frame contains a transverse lead screw slide, and the movable seat is equipped with a three-jaw chuck. A suspension seat is provided on the side wall of the movable seat, and a positioning frame and a locking assembly for locking the positioning frame are mounted on the suspension seat. A positioning clamp is provided on the top of the positioning frame. The transverse frame is mounted on the drive mechanism, and the movable seat is mounted on the slide of the transverse lead screw slide. The drive mechanism is located on the top of the base and between the two grinding mechanisms. The buffer mechanism is located on the top of the base and between the two clamping mechanisms.

[0008] Preferably, the locking assembly includes a locking block and a sliding frame. The locking block has a first wedge surface at its head end and a lever at its tail end. A first spring is fitted onto the locking block. The sliding frame has a locking slide seat on its side wall that slides with the locking block. The suspension seat has several locking slots on its side wall that engage with the locking block. Each locking slot has a second wedge surface that engages with the first wedge surface. The sliding frame is slidably fitted onto the suspension seat. The two ends of the first spring abut against the locking slide seat and the lever, respectively.

[0009] Preferably, the positioning clamp includes a positioning clamp and a positioning seat. The side wall of the positioning seat is provided with a telescopic groove that telescopically engages with the positioning clamp. An abutment plate is slidably provided in the telescopic groove. A second spring is provided between the back of the abutment plate and the groove wall of the telescopic groove. The positioning seat is located on the top of the positioning frame.

[0010] Preferably, the head end of the abutment plate is provided with a plurality of ball bearings.

[0011] Preferably, the driving mechanism includes a support, a lead screw, guide rods, and a first motor. Two supports and two lead screws are provided, with opposite helical directions of their threads. One end of each lead screw is equipped with a sprocket. Four guide rods are provided. Two supports are symmetrically arranged on the top of the machine base along its length. Two lead screws are symmetrically rotatably mounted on the two supports. Two guide rods are symmetrically arranged on both sides of one lead screw, and the other two guide rods are symmetrically arranged on both sides of the other lead screw. The first motor is mounted on the outer wall of one of the supports, and its output end is fixedly connected to the other end of one of the lead screws. Two sprockets are connected via chain drive. A synchronous slide is provided at the bottom of the transverse frame, with a threaded hole that mates with the lead screw and two sliding holes that slidably mate with the guide rods.

[0012] Preferably, the buffer mechanism includes a collection box, a base frame, a collection hopper, two buffer frames, an adjustment component for adjusting the distance between the two buffer frames, and two feed frames. The base frame has an insertion window that matches the collection box, and the top of the base frame has a feed inlet. The bottom of the collection hopper has a connecting pipe that connects to the feed inlet, and the connecting pipe has a side plate. The top of the collection hopper has two symmetrically arranged first sliding grooves, and the bottom of the buffer frames has two sliding strips that slide in cooperation with the first sliding grooves. The inner bottom wall at the rear end of the buffer frame has a discharge port. The frame is equipped with a distance compensation component. The head end of the feeding frame is equipped with an embedding head frame for embedding into the bolt thread section. Both sides of the embedding head frame are provided with bevels. The tail end of the feeding frame is provided with a discharge port. The bottom frame is set on the top of the machine base. The side plate is fixedly connected to the top of the bottom frame. The two buffer frames are symmetrically arranged on the top of the collecting hopper. The adjusting component is set on the collecting hopper and is drivenly connected to the two buffer frames. The two feeding frames are respectively set on the distance compensation components of the two buffer frames. The discharge port is located directly above the discharge port.

[0013] Preferably, the adjusting assembly includes a telescopic outer tube, an adjusting electric push rod, and an abutment block. Two telescopic outer tubes are provided, and a telescopic inner rod is slidably disposed within each outer tube. A third spring is sleeved on the outer tube. The abutment block has two symmetrically arranged third wedge surfaces at its head end. The top of the buffer frame has two symmetrically arranged connecting seats. One side of the rear end of the buffer frame has a fourth wedge surface that mates with the third wedge surfaces. An L-shaped frame is provided on the outer wall of the collecting hopper. One end of each of the two telescopic outer tubes is respectively disposed on the two connecting seats of one of the buffer frames. One end of each of the two telescopic inner rods is respectively disposed on the two connecting seats of the other buffer frame. Both ends of the third spring abut against the two connecting seats. The adjusting electric push rod is horizontally disposed on the L-shaped frame. The tail end of the abutment block is fixedly connected to the output end of the adjusting electric push rod. The two third wedge surfaces abut against the fourth wedge surfaces of the two buffer frames.

[0014] Preferably, the distance compensation component includes a U-shaped frame, with sliders on both outer walls of the U-shaped frame, a polygonal cross-section sliding rod on the U-shaped frame, a synchronizing block sliding on the sliding rod, two symmetrically arranged fourth springs sleeved on the sliding rod, the fourth springs being located between the synchronizing block and one inner wall of the U-shaped frame, a second sliding groove on both inner walls of the buffer frame, and several equally spaced fifth springs at the tail end of the feeding frame, with the two sliders slidably disposed on the two second sliding grooves respectively, the bottom of the feeding frame being fixedly connected to the top of the synchronizing block, and one end of the fifth spring being fixedly connected to the inner wall at the tail end of the buffer frame.

[0015] Preferably, the embedded head frame is provided with a first guide slope, and the feed frame is provided with a second guide slope.

[0016] Preferably, the bottom frame is further provided with a striking component, the striking component including a second motor, the output end of the second motor is provided with a mounting plate, the mounting plate is provided with a plurality of telescopic embedded grooves arranged at equal angles along its circumference, a telescopic column is slidably provided in the telescopic embedded groove, the head end of the telescopic column is provided with a striking ball, the tail end of the telescopic column is provided with a sixth spring, and the second motor is provided on the bottom frame.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] Firstly, this invention provides a buffering force for the two bolts during processing through a buffering mechanism, ensuring the bolts are under balanced force. There is no need for manual alignment of the threaded sections of the two bolts. The moving seat and three-jaw chuck are driven to move laterally by a transverse lead screw slide, allowing the bolts to automatically approach the grinding mechanism without manual operation. The driving mechanism can drive the two bolts to move relative to each other, and the two grinding mechanisms can simultaneously perform fine grinding on the two bolts, thereby improving the processing efficiency of fine grinding on the two bolts.

[0019] Secondly, the present invention can quickly lock the positioning frame through the locking component, thereby allowing the positioning clamp to clamp bolts of different lengths.

[0020] Thirdly, the present invention also has the function of automatically cleaning debris inside the bolt thread section, and can also automatically collect the debris into the collection box, which improves the convenience of cleaning debris. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the surface grinding apparatus of the present invention. Figure 1 ;

[0022] Figure 2 This is a three-dimensional structural diagram of the surface grinding apparatus of the present invention. Figure 2 ;

[0023] Figure 3 This is a three-dimensional structural diagram of the clamping mechanism;

[0024] Figure 4 This is a partial sectional view of the clamping mechanism;

[0025] Figure 5 This is a partial sectional view of the positioning clamp.

[0026] Figure 6 This is a three-dimensional structural diagram of the buffer mechanism;

[0027] Figure 7 A partial structural diagram of the buffer mechanism. Figure 1 ;

[0028] Figure 8 A partial structural diagram of the buffer mechanism. Figure 2 ;

[0029] Figure 9 This is a partial cross-sectional view of the buffer mechanism;

[0030] Figure 10 This is a schematic diagram of the striking component.

[0031] In the picture:

[0032] 1. Machine base; 2. Grinding mechanism; 3. Clamping mechanism; 31. Transverse frame; 311. Transverse lead screw slide; 32. Moving seat; 321. Three-jaw chuck; 33. Suspension seat; 331. Positioning frame; 332. Locking slot; 3321. Second wedge surface; 34. Locking assembly; 341. Locking block; 3411. First wedge surface; 342. Sliding frame; 343. Handle; 344. First spring; 345. Locking slide; 35. Fixed... 351. Clamp; 352. Positioning seat; 353. Telescopic groove; 354. Abutment plate; 3541. Ball bearing; 355. Second spring; 4. Drive mechanism; 41. Support; 42. Lead screw; 43. Guide rod; 44. Sprocket; 45. Synchronous slide; 46. First motor; 5. Buffer mechanism; 51. Collection box; 52. Base frame; 521. Insertion window; 53. Collection hopper; 531. Connecting pipe; 532. Side Plate; 533, L-shaped frame; 534, first slide groove; 54, buffer frame; 541, slide bar; 542, discharge port; 543, connecting seat; 544, fourth wedge surface; 545, second slide groove; 55, adjusting assembly; 551, telescopic outer tube; 5511, third spring; 552, adjusting electric push rod; 553, abutment block; 5531, third wedge surface; 554, telescopic inner rod; 555, feeding frame; 5551, discharge port; 5 552. Second guide ramp; 556. Embedded head frame; 5561. Bevel; 5562. First guide ramp; 56. Distance compensation component; 561. U-shaped frame; 562. Slide rod; 563. Synchronizing block; 564. Fourth spring; 565. Fifth spring; 57. Striking component; 571. Second motor; 572. Mounting plate; 573. Telescopic inner groove; 574. Telescopic column; 575. Striking ball; 576. Sixth spring. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figure 1-10 The present invention will describe the above technical solution in detail through the following embodiments:

[0035] A surface grinding apparatus for machining external hexagonal bolts includes a base 1 and two grinding mechanisms 2, which are symmetrically arranged on the top of the base 1 along its width. It also includes two clamping mechanisms 3, a drive mechanism 4 for driving the two clamping mechanisms 3 to move in opposite directions, and a buffer mechanism 5 for simultaneously providing buffering force to the two bolts. Each clamping mechanism 3 includes a transverse frame 31 and a moving seat 32. The transverse frame 31 contains a transverse lead screw slide 311, and the moving seat 32 is equipped with a three-jaw chuck 321. A suspension seat 33 is provided on the side wall of the moving seat 32. A positioning frame 331 and a locking component 34 for locking the positioning frame 331 are installed on the suspension seat 33. A positioning clamp 35 is provided on the top of the positioning frame 331. The transverse frame 31 is set on the drive mechanism 4. The moving seat 32 is set on the slide of the transverse lead screw slide 311. The drive mechanism 4 is set on the top of the machine base 1 and is located between the two grinding mechanisms 2. The buffer mechanism 5 is set on the top of the machine base 1 and is located between the two clamping mechanisms 3.

[0036] This invention provides a buffering force for the two bolts during processing through the buffer mechanism 5, ensuring the force balance of the bolts. There is no need for manual alignment of the threaded sections of the two bolts for engagement. The transverse lead screw slide 311 drives the moving seat 32 and the three-jaw chuck 321 to move laterally, so that the bolts can automatically approach the grinding mechanism 2 without manual operation. The drive mechanism 4 can drive the two bolts to move relative to each other. The two grinding mechanisms 2 can simultaneously perform fine grinding on the two bolts, thereby improving the processing efficiency of fine grinding on the two bolts.

[0037] When using this grinding device, first fix one end of each of the two bolts to the three-jaw chuck 321. Then, by moving the positioning frame 331, the other end of the bolts abuts against the positioning clamp 35. Next, the positioning frame 331 is locked in place by the locking assembly 34. The locking assembly 34 includes a locking block 341 and a sliding frame 342. The head end of the locking block 341 is provided with a first wedge surface 3411, and the tail end of the locking block 341 is provided with a lever 343. The upper part is fitted with a first spring 344. The side wall of the sliding frame 342 is provided with a locking slide 345 that slides with the locking plug 341. The side wall of the suspension seat 33 is provided with a number of locking slots 332 that are inserted and engaged with the locking plug 341. The locking slots 332 are provided with a second wedge surface 3321 that engages with the first wedge surface 3411. The sliding frame 342 is slidably fitted on the suspension seat 33. The two ends of the first spring 344 abut against the locking slide 345 and the lever 343 respectively.

[0038] like Figure 3 and Figure 4 As shown, the handheld positioning frame 331 moves to the other end of the bolt. The positioning frame 331 can drive the sliding frame 342 to move on the suspension seat 33. The sliding frame 342 drives the locking slide 345 and the locking block 341 to move synchronously. The first wedge surface 3411 of the locking block 341 engages with the second wedge surface 3321 in a locking slot 332. Then, the locking block 341 can move outward on the locking slide 345. The locking block 341 drives the lever 343 to move outward, and the first spring 344 is stretched. After the first wedge surface 3411 disengages from the second wedge surface 3321, the locking insert 341 disengages from the locking slot 332. Then, the locking insert 341 can enter the next locking slot 332 by the pulling force of the first spring 344. In this way, the locking insert 341 can be inserted into the remaining locking slots 332 in sequence. When the positioning clamp 35 abuts against the other end of the bolt, the positioning frame 331 stops moving. At this time, the locking insert 341 and the locking slot 332 cooperate to prevent the positioning frame 331 from moving backward.

[0039] Furthermore, the positioning clamp 35 includes a positioning clamp 351 and a positioning seat 352. The side wall of the positioning seat 352 is provided with a telescopic circular groove 353 that telescopically cooperates with the positioning clamp 351. An abutment plate 354 is slidably provided in the telescopic circular groove 353. A second spring 355 is provided between the back of the abutment plate 354 and the groove wall of the telescopic circular groove 353. The positioning seat 352 is located on the top of the positioning frame 331.

[0040] After the other end of the bolt abuts against the positioning chuck 351, the positioning chuck 351 can move into the telescopic groove 353. The positioning chuck 351 abuts against the abutment plate 354 and moves inward synchronously. The second spring 355 is compressed. The elastic force of the second spring 355 can make the positioning chuck 351 tightly abut against the other end of the bolt, making the bolt clamped more stably. After the three-jaw chuck 321 rotates, the bolt can also rotate. The bolt drives the positioning chuck 351 to rotate synchronously. In order to make the positioning chuck 351 move more smoothly, several balls 3541 are provided at the head end of the abutment plate 354.

[0041] like Figure 1 and Figure 2 As shown, the moving seat 32 is adjusted by the transverse lead screw slide 311, allowing the bolt to be finely ground by the grinding mechanism 2. Then, the two moving seats 32 are driven to move towards each other by the drive mechanism 4. The drive mechanism 4 includes a support 41, a lead screw 42, guide rods 43, and a first motor 46. There are two supports 41 and two lead screws 42, with opposite thread directions. One end of each lead screw 42 has a sprocket 44. There are four guide rods 43. The two supports 41 are symmetrically arranged on the top of the machine base 1 along its length. The rod 42 is symmetrically rotated on two supports 41. Two guide rods 43 are symmetrically arranged on both sides of one lead screw 42, and two other guide rods 43 are symmetrically arranged on both sides of another lead screw 42. The first motor 46 is arranged on the outer wall of one of the supports 41. The output end of the first motor 46 is fixedly connected to the other end of one of the lead screws 42. Two sprockets 44 are connected by chain drive. The bottom of the transverse frame 31 is provided with a synchronous slide 45. The synchronous slide 45 is provided with a threaded hole that mates with the lead screw 42 and two sliding holes that slidably mate with the guide rods 43.

[0042] The first motor 46 drives the corresponding lead screw 42 to rotate. After the lead screw 42 rotates, it drives the corresponding sprocket 44 to rotate synchronously. The sprocket 44 drives another sprocket 44 to rotate via a chain. This sprocket 44 drives another lead screw 42 to rotate synchronously. Since the threads of the two lead screws 42 are in opposite directions, the two synchronous slides 45 can move towards each other. The two synchronous slides 45 respectively drive the bolts on the two movable seats 32 to move towards each other.

[0043] The two bolts gradually approach the two grinding mechanisms 2, and also gradually approach the buffer mechanism 5. The buffer mechanism 5 includes a collection box 51, a bottom frame 52, a collection hopper 53, two buffer frames 54, an adjustment component 55 for adjusting the distance between the two buffer frames 54, and two feed frames 555. The bottom frame 52 is provided with an insertion window 521 that matches the collection box 51. The top of the bottom frame 52 is provided with a feed inlet. The bottom of the collection hopper 53 is provided with a connecting pipe 531 that connects to the feed inlet. The connecting pipe 531 is provided with a side plate 532. The top of the collection hopper 53 is provided with two symmetrically arranged first sliding grooves 534. The bottom of the buffer frame 54 is provided with two sliding strips 541 that slide in cooperation with the first sliding grooves 534. The inner bottom wall of the rear end of the buffer frame 54... The upper part has a discharge port 542, the buffer frame 54 has a distance compensation component 56, the head end of the feed frame 555 has an insert head frame 556 for embedding into the bolt thread section, both sides of the insert head frame 556 have bevels 5561, the tail end of the feed frame 555 has a discharge port 5551, the bottom frame 52 is set on the top of the base 1, the side plate 532 is fixedly connected to the top of the bottom frame 52, the two buffer frames 54 are symmetrically set on the top of the collection hopper 53, the adjustment component 55 is set on the collection hopper 53, and the adjustment component 55 is drivenly connected to the two buffer frames 54, the two feed frames 555 are respectively set on the distance compensation components 56 of the two buffer frames 54, and the discharge port 5551 is located directly above the discharge port 542.

[0044] The adjusting assembly 55 includes a telescopic outer tube 551, an adjusting electric push rod 552, and an abutment block 553. Two telescopic outer tubes 551 are provided, and a telescopic inner rod 554 slides inside each. A third spring 5511 is fitted onto the telescopic outer tube 551. The head end of the abutment block 553 has two symmetrically arranged third wedge surfaces 5531. The top of the buffer frame 54 has two symmetrically arranged connecting seats 543. One side of the tail end of the buffer frame 54 has a fourth wedge surface 544 that mates with the third wedge surfaces 5531. An L-shaped frame 53 is provided on the outer wall of the collecting hopper 53. 3. One end of each of the two telescopic outer tubes 551 is respectively set on the two connecting seats 543 of one of the buffer frames 54, and one end of each of the two telescopic inner rods 554 is respectively set on the two connecting seats 543 of the other buffer frame 54. The two ends of the third spring 5511 respectively abut against the two connecting seats 543. The adjusting electric push rod 552 is horizontally set on the L-shaped frame 533. The tail end of the abutting block 553 is fixedly connected to the output end of the adjusting electric push rod 552. The two third wedge surfaces 5531 abut against the fourth wedge surfaces 544 of the two buffer frames 54 respectively.

[0045] The distance compensation component 56 includes a U-shaped frame 561, with sliders on both outer walls of the U-shaped frame 561. A polygonal sliding rod 562 is provided on the U-shaped frame 561, and a synchronization block 563 is slidably mounted on the sliding rod 562. Two symmetrically arranged fourth springs 564 are sleeved on the sliding rod 562. The fourth springs 564 are located between the synchronization block 563 and one inner wall of the U-shaped frame 561. The inner walls of both sides of the buffer frame 54 are provided with second sliding grooves 545. The tail end of the feed frame 555 is provided with several equally spaced fifth springs 565. Two sliders are slidably mounted on the two second sliding grooves 545 respectively. The bottom of the feed frame 555 is fixedly connected to the top of the synchronization block 563, and one end of the fifth spring 565 is fixedly connected to the inner wall of the tail end of the buffer frame 54.

[0046] Working principle of buffer mechanism 5: Since the other end of the bolt itself has an external chamfer, after the other end of the bolt abuts against the inclined side 5561 of the corresponding insert head frame 556, the insert head frame 556 can be moved into the buffer frame 54 by the wedge surface of the inclined side 5561 and the external chamfer. The insert head frame 556 drives the feed frame 555 to move synchronously, all the fifth springs 565 are compressed. Then, after the insert head frame 556 is connected with the bolt thread section, the elastic force of the fifth spring 565 can drive the insert head frame 556 into the bolt thread section, and then through the two fourth springs 5 The elasticity of 64 allows the embedded head frame 556 to be stably embedded in the bolt thread section. Since the bolt is rotated by the three-jaw chuck 321, the debris in the bolt thread section can be scraped into the embedded head frame 556. The debris can roll into the feed frame 555, and then the debris can fall out from the discharge port 5551. After that, the debris enters the collection hopper 53 through the discharge port 542, and then enters the bottom frame 52 through the connecting pipe 531. The debris can then be collected by the collection box 51, thereby realizing automatic debris collection and improving the convenience of debris cleaning.

[0047] Since there are multiple types of bolts, each with a different diameter, the distance between the two buffer frames 54 can be adjusted by adjusting component 55, thereby adjusting the spacing between the two embedded head frames 556. When it is necessary to increase the spacing between the two buffer frames 54, the electric push rod 552 is adjusted to drive the abutment block 553 forward. The wedge surfaces of the two third wedge surfaces 5531 and the fourth wedge surfaces 544 of the two buffer frames 54 cooperate, so that the two buffer frames 54 are abutted by the abutment block 553 and can move in the opposite direction. At this time, the telescopic inner rod 554 extends outward on the telescopic outer tube 551, and the third spring 5511 is stretched. The elastic force of the two third springs 5511 is used to limit the two buffer frames 54. When it is necessary to decrease the spacing between the two buffer frames 54, the electric push rod 552 is adjusted to drive the abutment block 553 backward. The elastic force of the two third springs 5511 can pull the two buffer frames 54 closer to each other.

[0048] Furthermore, the head frame 556 is provided with a first guide slope 5562, and the feed frame 555 is provided with a second guide slope 5552. The first guide slope 5562 and the second guide slope 5552 can guide the debris to enter the discharge port 5551 more smoothly.

[0049] The bottom frame 52 is also provided with a striking component 57, which includes a second motor 571. The output end of the second motor 571 is provided with a mounting plate 572. The mounting plate 572 is provided with a plurality of telescopic recessed grooves 573 arranged at equal angles along its circumference. A telescopic column 574 is slidably provided in the telescopic recessed groove 573. The head end of the telescopic column 574 is provided with a striking ball 575, and the tail end of the telescopic column 574 is provided with a sixth spring 576. The second motor 571 is provided on the bottom frame 52.

[0050] The second motor 571 drives the mounting plate 572 to rotate. The mounting plate 572 drives all the telescopic columns 574 to rotate synchronously around the axis of the mounting plate 572. During the rotation, the striking ball 575 on the telescopic column 574 can hit the outer wall of the bottom frame 52, which can cause the bottom frame 52 to vibrate. The debris adhering to the bottom frame 52, the connecting pipe 531, and the collecting hopper 53 can be shaken off by the vibration. Then, the telescopic column 574 retracts into the telescopic inner groove 573, and the sixth spring 576 is compressed. After the striking ball 575 is separated from the outer wall of the bottom frame 52, the elastic force of the sixth spring 576 drives the telescopic column 574 to return to the initial position.

Claims

1. A surface grinding apparatus for machining external hexagonal bolts, comprising a base (1) and two grinding mechanisms (2), wherein the two grinding mechanisms (2) are symmetrically arranged on the top of the base (1) along the width direction of the base (1), characterized in that: It also includes two clamping mechanisms (3), a drive mechanism (4) for driving the two clamping mechanisms (3) to move in opposite directions at all times, and a buffer mechanism (5) for providing buffering force to the two bolts simultaneously. The clamping mechanism (3) includes a transverse frame (31) and a moving seat (32). The transverse frame (31) is provided with a transverse lead screw slide (311). A three-jaw chuck (321) is installed on the moving seat (32). A suspension seat (33) is provided on the side wall of the moving seat (32). A positioning frame (331) and a locking component (34) for locking the positioning frame (331) are installed on the suspension seat (33). A positioning clamp (35) is provided on the top of the positioning frame (331). The transverse frame (31) The moving seat (32) is set on the slide of the transverse lead screw slide (311), the driving mechanism (4) is set on the top of the machine base (1) and the driving mechanism (4) is located between the two grinding mechanisms (2), the buffer mechanism (5) is set on the top of the machine base (1) and the buffer mechanism (5) is located between the two clamping mechanisms (3), the buffer mechanism (5) includes a collection box (51), a bottom frame (52), a collection hopper (53), two buffer frames (54), an adjustment component (55) for adjusting the distance between the two buffer frames (54) and two feed frames (555), the bottom frame (52) is provided with an insertion window that matches the collection box (51). The bottom frame (52) has a feed inlet at the top, the bottom of the collecting hopper (53) has a connecting pipe (531) that connects to the feed inlet, the connecting pipe (531) has a side plate (532), the top of the collecting hopper (53) has two symmetrically arranged first grooves (534), the bottom of the buffer frame (54) has two sliding strips (541) that slide in cooperation with the first grooves (534), the inner bottom wall of the rear end of the buffer frame (54) has a discharge port (542), the buffer frame (54) has a distance compensation component (56), and the head end of the feed frame (555) has an embedding head frame (556) for embedding into the bolt thread section. The embedded head frame (556) has bevels (5561) on both sides, the feed frame (555) has a discharge port (5551) at the tail end, the bottom frame (52) is set on the top of the base (1), the side plate (532) is fixedly connected to the top of the bottom frame (52), the two buffer frames (54) are symmetrically set on the top of the collection hopper (53), the adjustment component (55) is set on the collection hopper (53), and the adjustment component (55) is connected to the two buffer frames (54) in a transmission manner. The two feed frames (555) are respectively set on the distance compensation component (56) of the two buffer frames (54), and the discharge port (5551) is located directly above the discharge port (542).

2. The surface grinding apparatus for machining external hexagonal bolts according to claim 1, characterized in that: The locking assembly (34) includes a locking insert (341) and a sliding frame (342). The head end of the locking insert (341) is provided with a first wedge surface (3411), and the tail end of the locking insert (341) is provided with a lever (343). A first spring (344) is sleeved on the locking insert (341). The side wall of the sliding frame (342) is provided with a locking slide (345) that slides with the locking insert (341). The side wall of the suspension (33) is provided with a plurality of locking slots (332) that are inserted and cooperate with the locking insert (341). The locking slots (332) are provided with a second wedge surface (3321) that cooperates with the first wedge surface (3411). The sliding frame (342) is slidably sleeved on the suspension (33). The two ends of the first spring (344) abut against the locking slide (345) and the lever (343) respectively.

3. The surface grinding apparatus for machining external hexagonal bolts according to claim 2, characterized in that: The positioning clamp (35) includes a positioning clamp (351) and a positioning seat (352). The side wall of the positioning seat (352) is provided with a telescopic groove (353) that telescopically cooperates with the positioning clamp (351). An abutment plate (354) is slidably provided in the telescopic groove (353). A second spring (355) is provided between the back of the abutment plate (354) and the groove wall of the telescopic groove (353). The positioning seat (352) is located on the top of the positioning frame (331).

4. The surface grinding apparatus for machining external hexagonal bolts according to claim 3, characterized in that: The head end of the abutment plate (354) is provided with a plurality of ball bearings (3541).

5. The surface grinding apparatus for machining external hexagonal bolts according to claim 1, characterized in that: The drive mechanism (4) includes a support (41), a lead screw (42), guide rods (43), and a first motor (46). There are two supports (41) and two lead screws (42), with opposite helical directions. One end of each lead screw (42) is equipped with a sprocket (44). There are four guide rods (43). The two supports (41) are symmetrically arranged on the top of the machine base (1) along the length of the machine base (1). The two lead screws (42) are symmetrically rotated on the two supports (41). The two guide rods (43) Two guide rods (43) are symmetrically arranged on both sides of one lead screw (42), and the other two guide rods (43) are symmetrically arranged on both sides of another lead screw (42). The first motor (46) is set on the outer wall of one of the supports (41). The output end of the first motor (46) is fixedly connected to the other end of one of the lead screws (42). The two sprockets (44) are connected by chain drive. The bottom of the transverse frame (31) is provided with a synchronous slide (45). The synchronous slide (45) is provided with a threaded hole that mates with the lead screw (42) and two sliding holes that slidably mate with the guide rods (43).

6. The surface grinding apparatus for machining external hexagonal bolts according to claim 1, characterized in that: The adjusting assembly (55) includes a telescopic outer tube (551), an adjusting electric push rod (552), and an abutment block (553). Two telescopic outer tubes (551) are provided. A telescopic inner rod (554) slides inside each telescopic outer tube (551). A third spring (5511) is fitted onto each telescopic outer tube (551). The head end of the abutment block (553) has two symmetrically arranged third wedge surfaces (5531). The top of the buffer frame (54) has two symmetrically arranged connecting seats (543). One side of the tail end of the buffer frame (54) has a fourth wedge surface (544) that mates with the third wedge surface (5531). The outer wall of the collecting hopper (53) has an L-shaped... The frame (533) has two telescopic outer tubes (551) with one end set on the two connecting seats (543) of one of the buffer frames (54), and two telescopic inner rods (554) with one end set on the two connecting seats (543) of the other buffer frame (54). The two ends of the third spring (5511) abut against the two connecting seats (543) respectively. The adjusting electric push rod (552) is horizontally set on the L-shaped frame (533). The tail end of the abutting block (553) is fixedly connected to the output end of the adjusting electric push rod (552). The two third wedge surfaces (5531) abut against the fourth wedge surfaces (544) of the two buffer frames (54) respectively.

7. The surface grinding apparatus for machining external hexagonal bolts according to claim 6, characterized in that: The distance compensation component (56) includes a U-shaped frame (561), with sliders on both outer walls of the U-shaped frame (561), a polygonal sliding rod (562) on the U-shaped frame (561), a synchronizing block (563) sliding on the sliding rod (562), and two symmetrically arranged fourth springs (564) on the sliding rod (562). The fourth springs (564) are located between the synchronizing block (563) and one inner wall of the U-shaped frame (561). The inner walls of both sides of the buffer frame (54) are provided with second sliding grooves (545). The tail end of the feed frame (555) is provided with several equally spaced fifth springs (565). The two sliders are respectively slidably arranged on the two second sliding grooves (545). The bottom of the feed frame (555) is fixedly connected to the top of the synchronizing block (563), and one end of the fifth spring (565) is fixedly connected to the inner wall of the tail end of the buffer frame (54).

8. The surface grinding apparatus for machining external hexagonal bolts according to claim 7, characterized in that: The embedded head frame (556) is provided with a first guide slope (5562), and the feed frame (555) is provided with a second guide slope (5552).

9. The surface grinding apparatus for machining external hexagonal bolts according to claim 8, characterized in that: The bottom frame (52) is also provided with a striking component (57), which includes a second motor (571). The output end of the second motor (571) is provided with a mounting plate (572). The mounting plate (572) is provided with a plurality of telescopic recessed slots (573) arranged at equal angles along its circumference. A telescopic column (574) is slidably provided in the telescopic recessed slot (573). The head end of the telescopic column (574) is provided with a striking ball (575), and the tail end of the telescopic column (574) is provided with a sixth spring (576). The second motor (571) is provided on the bottom frame (52).

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