Simple thread grinding tool and method

Abstract

The invention discloses a simple thread grinding tool and method. The defect that in the prior art, the machining cost of threads on hard alloy is high is overcome. According to the technical scheme, the device comprises a base and an upper sliding block connected with the base in a sliding mode, the upper sliding block and the base are in transmission through a lead screw assembly, the lead screw assembly comprises a lead screw and a lead screw sliding block, the lead screw sliding block is installed on the base, and the lead screw penetrates through the lead screw sliding block to be connected with the base; a connecting rod is arranged on the upper sliding block, a clamping jaw is arranged at one end of the connecting rod, and the other end of the connecting rod is in transmission with the lead screw through a transmission assembly. And a grinding wheel for processing a workpiece is arranged at the front end of the clamping jaw. Compared with machining through a special thread grinding machine or electric spark in the prior art, the hard alloy thread machining device has the advantages of being low in machining cost, simpler in overall structure and suitable for small-batch hard alloy thread machining.

Description

Technical Field

[0001] The invention relates to the technical field of thread processing, and more specifically, to a simple thread grinding tool and method. Background Art

[0002] Increasing revenue and reducing expenditure will be one of the trends in the future development of the machinery industry. The "arrogance" of integral carbide tooling and molds will become a thing of the past, and more splicing methods will be used for design and production. In mechanical design and manufacturing, threaded connections are the most convenient and cheapest connection method in most scenarios, and are more often used by designers. The high hardness and high brittleness of carbide limit the processing method of making threads on carbide. At present, the method of processing carbide threads is to use special thread grinders or electrospark machining methods. Special thread grinders have high limitations. For the small-batch mold manufacturing industry, the cost of grinders is high, and the electrospark machining method requires the production of electrodes, and the processing time is long, and the processing cost is high. Summary of the invention

[0003] The invention overcomes the disadvantage of high cost of thread processing on cemented carbide in the prior art, and provides a simple thread grinding tool, which can be suitable for processing small batches of cemented carbide threads, has low production cost, and can be suitable for processing different pitches.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: a simple thread grinding tool, comprising: a base and an upper slider slidably connected to the base, the upper slider and the base are transmitted through a screw assembly, the screw assembly includes a screw and a screw slider, the screw slider is installed on the base, and the screw passes through the screw slider and is connected to the base; a connecting rod is provided on the upper slider, a claw is provided at one end of the connecting rod, and the other end of the connecting rod is transmitted to the screw through a transmission assembly; a grinding wheel for processing the workpiece is provided at the front end of the claw.

[0005] In the present application, when the connecting rod rotates, the screw can be driven to rotate by the transmission assembly. Since the base is fixed and the screw and the screw slider move relative to each other, the screw can drive the upper slider to move, so that the upper slider and the base form a relative slide; during the sliding of the upper slider, the upper slider drives the connecting rod to move, and the connecting rod drives the claws at its end to move, so that the workpiece clamped on the claws can move relative to the grinding wheel to achieve grinding of the grinding wheel. In addition, since the upper slider is driven to move by the screw structure, the pitch of the thread processed on the workpiece is the same as the pitch on the screw, therefore, different threads can be processed on the workpiece by replacing the screw with different pitches. Compared with the prior art through a special thread grinder or electric spark machining, it has the advantages of low processing cost, simpler overall structure, and suitable for small batch carbide thread processing.

[0006] Preferably, the screw slider is fixedly arranged in the base, a mounting protrusion is arranged at one end of the upper slider, and the screw passes through the mounting protrusion and is connected to the screw slider.

[0007] Through the above structure, the screw rod can not only rotate in the circumferential direction relative to the mounting protrusion, but also drive the mounting protrusion to move along the axial direction.

[0008] Preferably, the transmission assembly includes a lower gear arranged at the end of the screw rod and an upper gear arranged on the connecting rod, and the upper gear and the lower gear are meshed with each other.

[0009] When the connecting rod rotates, the power is transmitted to the lower gear through the upper gear, so that the screw rod can also rotate.

[0010] Preferably, a fixing block is provided on the top of the upper sliding block, and the connecting rod is passed through the fixing block.

[0011] The fixing block supports and fixes the connecting rod, and the connecting rod can rotate freely in the fixing block.

[0012] Preferably, a crank handle is provided at one end of the connecting rod away from the claw.

[0013] The hand crank handle can improve the convenience of rotating the connecting rod, so that the connecting rod can be rotated by rotating the hand crank handle, making the connecting rod rotation easier, reducing the difficulty of operation, and improving the processing efficiency of the workpiece.

[0014] Preferably, a slider is provided on the end surface of the upper slider close to the base, and a slide groove cooperating with the slider is provided on the base, and the slide groove is parallel to the screw rod.

[0015] Through the cooperation between the slider and the slide groove, the upper slider can slide more smoothly relative to the base.

[0016] Preferably, the slider is a T-shaped slider, and the slide groove is a T-shaped slide groove.

[0017] The T-shaped slide groove can limit the T-shaped slider, so that the upper slider can slide smoothly on the base.

[0018] Preferably, a support rod is provided on the upper end surface of the upper slider, the grinding wheel is arranged between the support rod and the claw, and an abutment rod is provided on the top end of the support rod. When the workpiece is processed, the workpiece abuts against the abutment rod.

[0019] When processing the workpiece, the workpiece abuts in the abutment rod, so that the abutment rod can abut the workpiece, so that both ends of the workpiece have support structures, thereby reducing the bending moment force on the workpiece, thereby improving the processing accuracy of the workpiece.

[0020] Preferably, a mounting groove is provided on the abutting rod, and a rotating member is provided in the mounting groove. When the workpiece and the rotating member abut against each other, the rotating member can rotate driven by the workpiece.

[0021] The arrangement of the rotating member enables the rotating member to rotate together with the workpiece when the workpiece rotates, thereby reducing the friction between the workpiece and the abutment rod.

[0022] The present application also provides a simple grinding thread processing method, which uses the above-mentioned simple grinding thread processing tooling and also includes the following steps: (1) Clamp the workpiece on the jaws, adjust the grinding wheel position, and start the grinding wheel; (2) The connecting rod rotates to drive the workpiece to rotate. At the same time, the connecting rod drives the screw to rotate. The screw moves in the screw slider and drives the upper slider to slide, so that the grinding wheel processes threads on the workpiece. (3) Adjust the grinding wheel up and down, and grind back and forth until the thread depth on the workpiece reaches the required level; (4) After the workpiece is processed, remove it, reset the tooling, put in a new workpiece, and repeat the above steps to process the new workpiece.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: in the present application, when the connecting rod rotates, the screw rod can be driven to rotate through the transmission assembly. Since the base is fixed and the screw rod and the screw rod slider move relative to each other, the screw rod can drive the upper slider to move, so that a relative sliding is formed between the upper slider and the base; during the sliding of the upper slider, the upper slider drives the connecting rod to move, and the connecting rod drives the claws at its end to move, so that the workpiece clamped on the claws can move relative to the grinding wheel to achieve grinding of the grinding wheel. In addition, since the upper slider is driven to move by the screw rod structure, the pitch of the thread processed on the workpiece is the same as the pitch on the screw rod. Therefore, by replacing screw rods with different pitches, different threads can be processed on the workpiece.

[0024] In addition, the present application utilizes the screw and the screw slider to realize the synchronous movement of the screw and the connecting rod, so that in the process of pushing the workpiece to move and the grinding wheel to process the workpiece, the thread on the workpiece and the thread on the screw are the same, that is, the screw in the present application plays two roles, the first role is to push the upper slider to slide relative to the base, and the second role is to control the pitch of the processed thread on the workpiece. Compared with the prior art using a special thread grinder or electric spark machining, it has the advantages of low processing cost, simpler overall structure, and is suitable for small batch carbide thread machining. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0027] Figure 3 It is a side view of the present invention.

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

[0029] Figure 5 is a cross-sectional view of another embodiment.

[0030] Figure 6 yes Figure 8 Enlarged view of area a.

[0031] Figure 7 It is a side view of the abutment rod and the support rod of the present invention.

[0032] Figure 8 is a cross-sectional view of another embodiment of the present invention.

[0033] Fig. 9 yes Figure 8 Enlarged view of area b.

[0034] Fig.10 yes Figure 8 Magnified image of area c.

[0035] In the figure: 1, base, 11, lower mounting groove, 12, slide groove; 2. upper slider, 21. slider, 22. mounting convex block, 23. fixing block; 3. Screw assembly, 31. Screw, 32. Screw slider, 33. Lower gear, 4. connecting rod, 41. claw, 42. upper gear, 43. hand crank; 5. Grinding wheel; 6. Support rod, 61. Abutment rod, 611. Mounting groove, 612. Support roller, 62. Fixing rod, 621. Hydraulic hole, 63. Sliding rod, 631. Piston head, 632. Support spring; 7. Locking assembly, 71. Locking sleeve, 711. First side hole, 712. Second side hole, 713. Limiting convex ring, 714. Liquid storage ball, 715. Limiting spring, 716. Opening; 72. Locking sleeve rod, 721. Locking head, 722. Locking sleeve hole, 723. Auxiliary spring, 73. Locking slide rod. DETAILED DESCRIPTION

[0036] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings: Example 1: Reference Figures 1 to 5As shown, a simple thread grinding tool comprises: a base 1 and an upper slider 211 slidably connected to the base 1, the upper slider 211 and the base 1 are driven by a screw assembly 3, the screw assembly 3 comprises a screw 31 and a screw slider 32; a connecting rod 4 is arranged on the upper slider 211, a clamping claw 41 is arranged at one end of the connecting rod 4, and the other end of the connecting rod 4 and the screw 31 are driven by a transmission assembly; a grinding wheel for processing a workpiece is arranged at the front end of the clamping claw 41.

[0037] In the present application, when the connecting rod 4 rotates, the screw rod 31 can be driven to rotate through the transmission assembly. Since the base 1 is fixed and the screw rod 31 and the screw slider 32 move relative to each other, the screw rod 31 can drive the upper slider 211 to move, so that the upper slider 211 and the base 1 form a relative slide; during the sliding process of the upper slider 211, the upper slider 211 drives the connecting rod 4 to move, and the connecting rod 4 drives the claw 41 at its end to move, so that the workpiece clamped on the claw 41 can move relative to the grinding wheel to achieve grinding of the grinding wheel. In addition, since the upper slider 211 is driven to move by the screw rod 31 structure, the pitch of the thread machined on the workpiece is the same as the pitch on the screw rod 31. Therefore, different threads can be machined on the workpiece by replacing different screw rods 31. The present application utilizes the screw rod 31 and the screw rod slider 32 to realize the synchronous movement of the screw rod 31 and the connecting rod 4, so that in the process of pushing the workpiece to move and the grinding wheel to process the workpiece, the thread on the workpiece and the thread on the screw rod 31 are the same, that is, the screw rod 31 in the present application plays two roles, the first role is to push the upper slider 211 to slide relative to the base 1, and the second role is to control the pitch of the processed thread on the workpiece. Compared with the prior art using a special thread grinder or electric spark machining, it has the advantages of low machining cost, simpler overall structure, and is suitable for small batch cemented carbide thread machining.

[0038] Example 2: Reference Figures 1 to 5 As shown, a simple thread grinding tool comprises: a base 1 and an upper slider 2 slidably connected to the base 1, the upper slider 2 and the base 1 are driven by a screw assembly 3, the screw assembly 3 comprises a screw 31 and a screw slider 32; a connecting rod 4 is arranged on the upper slider 2, a clamping claw 41 is arranged at one end of the connecting rod 4, and the other end of the connecting rod 4 and the screw 31 are driven by a transmission assembly; a grinding wheel 5 for processing a workpiece is arranged at the front end of the clamping claw 41.

[0039] A lower mounting groove 11 is provided on the upper end surface of the base 1. When the upper slider 2 and the base 1 cooperate with each other, the upper slider 2 and the lower mounting groove 11 cooperate with each other to form a mounting cavity. The screw slider 32 is fixedly provided in the lower mounting groove 11 of the base 1. A mounting protrusion 22 is provided at one end of the upper slider 2. The mounting protrusion 22 extends downward to correspond to the height of the base 1. Then the screw 31 passes through the mounting protrusion 22 and the screw slider 32. The screw 31 cooperates with the screw slider 32. The screw 31 can rotate in the circumferential direction relative to the mounting protrusion 22 and can also drive the mounting protrusion 22 to move along the axial direction.

[0040] The transmission assembly may use other structures such as a pulley to transmit power between the connecting rod 4 and the screw rod 31, which is not limited here.

[0041] In one embodiment, the transmission assembly includes a lower gear 33 disposed at the end of the screw rod 31 and an upper gear 42 disposed on the connecting rod 4, and the upper gear 42 and the lower gear 33 are meshed with each other. The upper gear 42 and the lower gear 33 have the same structure and size. When the connecting rod 4 rotates, the power is transmitted to the lower gear 33 through the upper gear 42, so that the screw rod 31 can also rotate.

[0042] A fixing block 23 is provided on the top of the upper slider 2, and the connecting rod 4 is penetrated on the fixing block 23. The fixing block 23 plays a supporting and fixing role for the connecting rod 4. The connecting rod 4 can rotate freely in the fixing block 23.

[0043] In one embodiment, in order to facilitate the rotation of the connecting rod 4, a hand crank 43 is provided at the end of the connecting rod 4, and the hand crank 43 can improve the convenience of rotating the connecting rod 4, so that the connecting rod 4 can be rotated by rotating the hand crank 43, so that the connecting rod 4 can be rotated more easily, and the difficulty of operation is reduced. In addition, a handle cover can be provided on the hand crank 43, and the handle cover can rotate relative to the hand crank 43, so that the connecting rod 4 can be rotated more conveniently.

[0044] In one embodiment, a slider 21 is provided on the end surface of the upper slider 2 close to the base 1, and a slide groove 12 cooperating with the slider 21 is provided on the base 1, and the slide groove 12 is parallel to the screw rod 31. Through the cooperation between the slider 21 and the slide groove 12, the upper slider 2 can slide more smoothly relative to the base 1, and two slide grooves 12 are provided in the present application, and the two slide grooves 12 are symmetrically arranged on both sides of the screw rod 31, so the slider 21 is also symmetrically arranged on both sides of the screw rod 31.

[0045] In one embodiment, the slider 21 is a T-shaped slider 21, and the slide groove 12 is a T-shaped slide groove 12. The T-shaped slide groove 12 cooperates with the T-shaped slider 21, and the T-shaped slide groove 12 can limit the T-shaped slider 21, so that the upper slider 2 can slide smoothly on the base 1.

[0046] At present, there are three commonly used processing methods for threads on cemented carbide, one, sintering forming, two, grinding, and three, spark processing. Among these three processing methods, the first sintering forming is the lowest cost thread processing method, but affected by sintering deformation, this processing method is only suitable for rough thread accuracy. It is difficult to handle slightly more precise thread processing. The second grinding processing method is currently mostly processed by a special thread grinder. The processing accuracy is relatively precise, but the cost of special machine tools is high, and the applicability is too limited. It is more suitable for batch processing. For small batches or even single-piece tooling and mold processing, the cost is high. The third spark processing has precise processing accuracy, but the requirements for the spark machine are high. Ordinary spark machines do not have the ability to process threads, and the relative processing cost is too high.

[0047] In the present application, when the connecting rod 4 rotates, the screw rod 31 can be driven to rotate through the transmission assembly. Since the base 1 is fixed and the screw rod 31 and the screw slider 32 move relative to each other, the screw rod 31 can drive the upper slider 2 to move, so that the upper slider 2 and the base 1 form a relative slide; during the sliding process of the upper slider 2, the upper slider 2 drives the connecting rod 4 to move, and the connecting rod 4 drives the claw 41 at its end to move, so that the workpiece clamped on the claw 41 can move relative to the grinding wheel to achieve grinding of the grinding wheel. In addition, since the upper slider 2 is driven to move by the screw rod 31 structure, the pitch of the thread machined on the workpiece is the same as the pitch on the screw rod 31. Therefore, by replacing the screw rod 31 with a different pitch, different threads can be machined on the workpiece.

[0048] The present application utilizes the screw rod 31 and the screw rod slider 32 to realize the synchronous movement of the screw rod 31 and the connecting rod 4, so that in the process of pushing the workpiece to move and the grinding wheel to process the workpiece, the thread on the workpiece and the thread on the screw rod 31 are the same, that is, the screw rod 31 in the present application plays two roles, the first role is to push the upper slider 2 to slide relative to the base 1, and the second role is to control the pitch of the processed thread on the workpiece. Compared with the prior art through a special thread grinder or electric spark machining, it has the advantages of low processing cost, simpler overall structure, and is suitable for small batch cemented carbide thread machining.

[0049] Example 3: Reference Figures 1 to 5 As shown, a simple thread grinding tool comprises: a base 1 and an upper slider 2 slidably connected to the base 1, the upper slider 2 and the base 1 are driven by a screw assembly 3, the screw assembly 3 comprises a screw 31 and a screw slider 32; a connecting rod 4 is arranged on the upper slider 2, a clamping claw 41 is arranged at one end of the connecting rod 4, and the other end of the connecting rod 4 and the screw 31 are driven by a transmission assembly; a grinding wheel 5 for processing a workpiece is arranged at the front end of the clamping claw 41.

[0050] A lower mounting groove 11 is provided on the upper end surface of the base 1. When the upper slider 2 and the base 1 cooperate with each other, the upper slider 2 and the lower mounting groove 11 cooperate with each other to form a mounting cavity. The screw slider 32 is fixedly provided in the lower mounting groove 11 of the base 1. A mounting protrusion 22 is provided at one end of the upper slider 2. The mounting protrusion 22 extends downward to correspond to the height of the base 1. Then the screw 31 passes through the mounting protrusion 22 and the screw slider 32. The screw 31 cooperates with the screw slider 32. The screw 31 can rotate in the circumferential direction relative to the mounting protrusion 22 and can also drive the mounting protrusion 22 to move along the axial direction.

[0051] The transmission assembly may use other structures such as a pulley to transmit power between the connecting rod 4 and the screw rod 31, which is not limited here.

[0052] In one embodiment, the transmission assembly includes a lower gear 33 disposed at the end of the screw rod 31 and an upper gear 42 disposed on the connecting rod 4, and the upper gear 42 and the lower gear 33 are meshed with each other. The upper gear 42 and the lower gear 33 have the same structure and size. When the connecting rod 4 rotates, the power is transmitted to the lower gear 33 through the upper gear 42, so that the screw rod 31 can also rotate.

[0053] A fixing block 23 is provided on the top of the upper slider 2, and the connecting rod 4 is penetrated on the fixing block 23. The fixing block 23 plays a supporting and fixing role for the connecting rod 4. The connecting rod 4 can rotate freely in the fixing block 23.

[0054] In one embodiment, in order to facilitate the rotation of the connecting rod 4, a hand crank 43 is provided at the end of the connecting rod 4, and the hand crank 43 can improve the convenience of rotating the connecting rod 4, so that the connecting rod 4 can be rotated by rotating the hand crank 43, so that the connecting rod 4 can be rotated more easily, and the difficulty of operation is reduced. In addition, a handle cover can be provided on the hand crank 43, and the handle cover can rotate relative to the hand crank 43, so that the connecting rod 4 can be rotated more conveniently.

[0055] In one embodiment, a slider 21 is provided on the end surface of the upper slider 2 close to the base 1, and a slide groove 12 cooperating with the slider 21 is provided on the base 1, and the slide groove 12 is parallel to the screw rod 31. Through the cooperation between the slider 21 and the slide groove 12, the upper slider 2 can slide more smoothly relative to the base 1, and two slide grooves 12 are provided in the present application, and the two slide grooves 12 are symmetrically arranged on both sides of the screw rod 31, so the slider 21 is also symmetrically arranged on both sides of the screw rod 31.

[0056] In one embodiment, the slider 21 is a T-shaped slider 21, and the slide groove 12 is a T-shaped slide groove 12. The T-shaped slide groove 12 cooperates with the T-shaped slider 21, and the T-shaped slide groove 12 can limit the T-shaped slider 21, so that the upper slider 2 can slide smoothly on the base 1.

[0057] Reference Figures 5 to 7 As shown, in Example 1, the support of the workpiece is completely achieved by the claw 41, and when the workpiece is processed, the force exerted by the grinding wheel on the workpiece will cause the workpiece to bend, which not only affects the processing accuracy, but also affects the verticality of the workpiece, especially when the grinding wheel grinds the end of the workpiece, the torque applied to the workpiece is the largest. Therefore, a support rod 6 is provided on the upper end surface of the upper slider 2, and the support rod 6 is arranged in a vertical direction. The grinding wheel is arranged between the support rod 6 and the claw 41, and an abutment rod 61 is provided at the top end of the support rod 6. The abutment rod 61 is arranged horizontally. When the workpiece is processed, the workpiece abuts against the abutment rod 61, so that the abutment rod 61 can abut against the workpiece, so that there is a support structure at both ends of the workpiece, thereby reducing the bending moment applied to the workpiece, thereby improving the processing accuracy of the workpiece.

[0058] In one embodiment, the abutment rod 61 is provided with a mounting groove 611, and a rotating member is provided in the mounting groove 611. When the workpiece and the rotating member abut against each other, the rotating member can rotate under the drive of the workpiece. The setting of the rotating member enables the rotating member to rotate with the workpiece when the workpiece rotates, thereby reducing the friction between the workpiece and the abutment rod 61.

[0059] The rolling element can be set as a freely rotatable ball embedded in the abutment rod 61. In this embodiment, the rotating element is a plurality of supporting rollers 612 arranged on the abutment rod 61. A mounting groove 611 is arranged on the upper end surface of the abutment rod 61. The two ends of the supporting rolling shaft are supported on the groove walls on both sides of the mounting groove 611. The axis of the supporting roller 612 is parallel to the axis of the connecting rod 4. When the workpiece abuts against the supporting roller 612, the workpiece can drive the supporting roller 612 to rotate when rotating, thereby reducing the friction between the workpiece and the abutment rod 61.

[0060] At present, there are three commonly used processing methods for threads on cemented carbide, one, sintering forming, two, grinding, and three, spark processing. Among these three processing methods, the first sintering forming is the lowest cost thread processing method, but affected by sintering deformation, this processing method is only suitable for rough thread accuracy. It is difficult to handle slightly more precise thread processing. The second grinding processing method is currently mostly processed by a special thread grinder. The processing accuracy is relatively precise, but the cost of special machine tools is high, and the applicability is too limited. It is more suitable for batch processing. For small batches or even single-piece tooling and mold processing, the cost is high. The third spark processing has precise processing accuracy, but the requirements for the spark machine are high. Ordinary spark machines do not have the ability to process threads, and the relative processing cost is too high.

[0061] In the present application, when the connecting rod 4 rotates, the screw rod 31 can be driven to rotate through the transmission assembly. Since the base 1 is fixed and the screw rod 31 and the screw slider 32 move relative to each other, the screw rod 31 can drive the upper slider 2 to move, so that the upper slider 2 and the base 1 form a relative slide; during the sliding process of the upper slider 2, the upper slider 2 drives the connecting rod 4 to move, and the connecting rod 4 drives the claw 41 at its end to move, so that the workpiece clamped on the claw 41 can move relative to the grinding wheel to achieve grinding of the grinding wheel. In addition, since the upper slider 2 is driven to move by the screw rod 31 structure, the pitch of the thread machined on the workpiece is the same as the pitch on the screw rod 31. Therefore, by replacing the screw rod 31 with a different pitch, different threads can be machined on the workpiece.

[0062] The present application utilizes the screw rod 31 and the screw rod slider 32 to realize the synchronous movement of the screw rod 31 and the connecting rod 4, so that in the process of pushing the workpiece to move and the grinding wheel to process the workpiece, the thread on the workpiece and the thread on the screw rod 31 are the same, that is, the screw rod 31 in the present application plays two roles, the first role is to push the upper slider 2 to slide relative to the base 1, and the second role is to control the pitch of the processed thread on the workpiece. Compared with the prior art through a special thread grinder or electric spark machining, it has the advantages of low processing cost, simpler overall structure, and is suitable for small batch cemented carbide thread machining.

[0063] Example 4: Reference Figures 8 to 10As shown, the structure of this embodiment is similar to that of the embodiment 3, except that the support rod 6 includes a fixed rod 62 and a sliding rod 63, and the abutment rod 61 is arranged at the end of the sliding rod 63. A hydraulic hole 621 is arranged in the fixed rod 62, and the opening 716 of the hydraulic hole 621 faces upward. A piston head 631 is arranged at the end of the sliding rod 63, and the piston head 631 slides in the hydraulic hole 621. A support spring 632632 abuts between the hydraulic hole 621 and the piston head 631, and the support spring 632 pushes the sliding rod 63 to move upward and abut against the workpiece. The piston head 631 and the hydraulic hole 621 cooperate to form a hydraulic cavity, and the hydraulic cavity is filled with hydraulic oil.

[0064] A locking assembly 7 is arranged between the mounting protrusion 22 and the base 1. The locking assembly 7 includes a locking sleeve 71 fixed at one end of the base 1 and a locking rod slidably arranged in the locking sleeve 71. An opening 716 is arranged at one end of the locking sleeve 71. A first side hole 711 and a second side hole 712 are arranged on the side wall of the locking sleeve 71. The first side hole 711 is arranged at an end close to the opening 716, and the second side hole 712 is arranged at an end away from the opening 716. A limiting convex ring 713 is arranged on the inner wall of the locking sleeve 71 and on a side of the first side hole 711 close to the second side hole 712. The first side hole 711 is connected to the hydraulic cavity in the fixing rod 62 through an oil pipe, and the second side hole 712 is connected to a liquid storage ball 714. The liquid storage ball 714 is made of rubber material and can be freely extended and retracted. The liquid storage ball 714, the locking sleeve rod 72 and the hydraulic cavity are filled with hydraulic oil. A limiting spring 715 is arranged in the locking sleeve 71.

[0065] The locking rod comprises a locking sleeve rod 72 and a locking slide rod 73. One end of the locking sleeve rod 72 passes through the opening 716 and is connected to a locking head 721. The locking head 721 is made of rubber material and is slidably arranged in the locking sleeve 71. The locking head 721 is sealed and matched with the side wall of the locking sleeve 71. The two ends of the limit spring 715 are respectively abutted against the ends of the locking head 721 and the locking sleeve 71. A locking sleeve hole 722 is provided at the end of the locking sleeve rod 72 away from the locking head 721. One end of the locking slide rod 73 is connected to the mounting protrusion 22, and the other end of the locking slide rod 73 slides in the locking sleeve hole 722. An auxiliary spring 723 is abutted between the bottom of the locking sleeve hole 722 and the end of the locking slide rod 73. The elastic coefficient of the auxiliary spring 723 is greater than the elastic coefficient of the limit spring 715.

[0066] When the workpiece is in a non-processing state, the locking slide bar 73, the locking sleeve bar 72 and the locking sleeve 71 are in an initial state. The hydraulic chamber is connected to the locking sleeve 71. Under the action of the limit spring 715, the locking head 721 does not close the first side hole 711. The volume in the hydraulic chamber can be changed arbitrarily. When the volume in the hydraulic chamber becomes smaller, the hydraulic oil in the hydraulic chamber passes through the first side hole 711 through the oil pipe, passes through the locking sleeve 71, and enters the liquid storage ball 714 from the second side hole 712; when the volume in the hydraulic chamber becomes larger, the hydraulic oil in the liquid storage ball 714 enters the hydraulic chamber through the second side hole 712, the locking sleeve 71, and the first side hole 711. Since the liquid storage ball 714 is made of rubber material, it can automatically adjust the volume as the hydraulic oil pressure increases or decreases, ensuring that the locking sleeve 71 and the hydraulic chamber are filled with hydraulic oil.

[0067] When the workpiece is placed on the claw 41, the support spring 632 pushes the sliding rod 63 to move upward, so that the abutment rod 61 abuts against the workpiece. No matter how the diameter of the workpiece changes, under the action of the support spring 632, the abutment rod 61 can abut against the workpiece and provide good support for the workpiece.

[0068] When the workpiece is processed, the upper slider 2 slides under the drive of the screw 31, so that the installation protrusion 22 moves toward the direction close to the base 1. When the installation protrusion 22 moves, the installation protrusion 22 pushes the locking slide bar 73 to move. Since the elastic coefficient of the auxiliary spring 723 is greater than the elastic coefficient of the limit spring 715, the compression amount of the auxiliary spring 723 is small at this time, the locking sleeve rod 72 and the locking slide bar 73 are equivalent to a whole rod, the limit spring 715 is compressed, and the locking head 721 slides in the locking sleeve 71. Since the locking head 721 is close to the first side hole 711, when the installation protrusion 22 moves a short distance, the locking head 721 blocks the first side hole 711, and the locking head 721 and the limit protrusion 713 are in contact. At this time, the hydraulic oil in the hydraulic chamber and the locking sleeve 71 cannot flow freely, and the hydraulic chamber is equivalent to a closed cavity on one side, so that when the workpiece is processed, the sliding rod 63 cannot slide in the fixed rod 62, which plays a rigid supporting role for the workpiece.

[0069] When the workpiece is further processed, the mounting protrusion 22 continues to push the locking slide bar 73 to move, and since the locking head 721 is abutted by the limiting protrusion 713, the locking sleeve 72 is fixed, so that the locking slide bar 73 moves in the locking sleeve 72. The locking head 721 does not change its position from beginning to end, and plays a blocking function for the first side hole 711. When the workpiece is processed, the mounting protrusion 22 is reset, driving the locking slide bar 73 and the locking sleeve 72 to reset, the first side hole 711 is opened, and the hydraulic oil in the hydraulic cavity can flow smoothly again.

[0070] That is to say, through the above structure, the same abutment effect can be achieved on workpieces of different diameters without manually adjusting the height of the abutment rod 61 .

[0071] Embodiment 5: A simple grinding thread processing method, characterized in that the simple grinding thread processing tool described in any one of the above embodiments 1 to 4 is used, and further comprising the following steps: (1) Clamp the workpiece on the jaw 41, adjust the grinding wheel position, and start the grinding wheel; (2) The connecting rod 4 is rotated to drive the workpiece to rotate, and at the same time, the connecting rod 4 drives the screw rod 31 to rotate. The screw rod 31 moves in the screw rod slider 32 and drives the upper slider 2 to slide, so that the grinding wheel processes threads on the workpiece; (3) Adjust the grinding wheel up and down, and grind back and forth until the thread depth on the workpiece reaches the required level; (4) After the workpiece is processed, remove it, reset the tooling, put in a new workpiece, and repeat the above steps to process the new workpiece.

[0072] The above-described embodiments are only preferred solutions of the present invention and are not intended to limit the present invention in any form. Other variations and modifications are possible without exceeding the technical solutions described in the claims.

Claims

1. A simple thread grinding tool, characterized in that: include: The base and an upper slider slidably connected to the base, the upper slider and the base are driven by a screw assembly, the screw assembly includes a screw and a screw slider, the screw slider is installed on the base, the screw passes through the screw slider and is connected to the base; a connecting rod is arranged on the upper slider, a claw is arranged at one end of the connecting rod, and the other end of the connecting rod is driven by the screw through a transmission assembly; a grinding wheel for processing the workpiece is arranged at the front end of the claw.

2. The simple thread grinding tool according to claim 1 is characterized in that: The screw slider is fixedly arranged in the base, a mounting protrusion is arranged at one end of the upper slider, and the screw passes through the mounting protrusion and is connected with the screw slider.

3. The simple thread grinding tool according to claim 1 is characterized in that: The transmission assembly comprises a lower gear arranged at the end of the screw rod and an upper gear arranged on the connecting rod, and the upper gear and the lower gear are meshed with each other.

4. The simple thread grinding tool according to claim 1 is characterized in that: A fixing block is arranged on the top of the upper sliding block, and a connecting rod is passed through the fixing block.

5. The simple thread grinding tool according to any one of claims 1 to 4, characterized in that: A hand crank handle is arranged at one end of the connecting rod away from the clamping claw.

6. The simple thread grinding tool according to any one of claims 1 to 4, characterized in that: The end surface of the upper slider close to the base is provided with a slider, and the base is provided with a slide groove matched with the slider, and the slide groove is parallel to the screw rod.

7. The simple thread grinding tool according to claim 5 is characterized in that: The slider is a T-shaped slider, and the slide groove is a T-shaped slide groove.

8. The simple thread grinding tool according to claim 1 is characterized in that: The upper end surface of the upper slider is provided with a support rod, the grinding wheel is arranged between the support rod and the clamping claw, and the top end of the support rod is provided with an abutment rod. When processing the workpiece, the workpiece abuts against the abutment rod.

9. The simple thread grinding tool according to claim 8 is characterized in that: The abutting rod is provided with an installation groove, and a rotating member is arranged in the installation groove. When the workpiece and the rotating member abut, the rotating member can rotate driven by the workpiece.

10. A simple grinding thread processing method, characterized in that: The simple thread grinding tool as claimed in any one of claims 1 to 9 is used, and further comprising the following steps: (1) Clamp the workpiece on the jaws, adjust the grinding wheel position, and start the grinding wheel; (2) The connecting rod rotates to drive the workpiece to rotate. At the same time, the connecting rod drives the screw to rotate. The screw moves in the screw slider and drives the upper slider to slide, so that the grinding wheel processes threads on the workpiece. (3) Adjust the grinding wheel up and down, and grind back and forth until the thread depth on the workpiece reaches the required depth; (4) After the workpiece is processed, remove the workpiece, reset the tooling, put in a new workpiece, and repeat the above steps to process the new workpiece.

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