Tap square grinding machine

Abstract

This utility model provides a tap grinding machine, which relates to the field of tap processing technology. It includes a frame, a tap clamping mechanism, and a grinding mechanism, which includes a bidirectional drive frame, a grinding wheel drive frame, and grinding wheels. The grinding mechanism drives the grinding wheels fixed on the two grinding wheel drive frames to move in opposite directions or in the opposite direction through the bidirectional drive frame. The distance between the two grinding wheels can be adjusted, and both sides of the tap shank are ground at the same time. The forces on both sides of the tap shank cancel each other out, which reduces the stability requirements of the clamping mechanism. At the same time, the processing efficiency is improved because both sides of the tap shank are processed at the same time.

Description

Technical Field

[0001] This utility model relates to the field of tap processing technology, and in particular to a tap grinding machine. Background Technology

[0002] The descriptions in this section provide background information relating to this disclosure and do not constitute prior art.

[0003] The shank of a tap has a square-like cross-section to facilitate clamping the shank during operation for transmitting torque. Grinding the shank to a square shape is an essential step in tap manufacturing.

[0004] The shank grinding process typically involves using a jig to hold and position the tap to be processed, and then using a grinding tool to grind both sides of the tap shank flat. However, this processing method involves grinding one side of the tap shank flat before grinding the other side. The shank of the tap is subjected to force on one side, which requires higher stability of the clamping mechanism, and the efficiency of processing both sides separately is low. Utility Model Content

[0005] The purpose of this utility model is to provide a tap grinding machine that has the advantage of grinding both sides of the tap shank at the same time. This solves the technical problem that grinding one side of the tap shank flat before grinding the other side, the shank of the tap being subjected to force on one side, which requires higher stability of the clamping mechanism, and the efficiency of processing both sides separately is low.

[0006] This utility model provides a tap grinding machine, comprising:

[0007] The frame has a tap clamping mechanism fixedly mounted on its top surface, which holds the tap to be processed.

[0008] A grinding mechanism is fixedly provided above the tap clamping mechanism, which includes:

[0009] A bidirectional drive frame, with grinding wheel drive frames fixedly mounted at the lower ends of the movable parts on both sides;

[0010] The lower end of the grinding wheel drive frame is equipped with a grinding wheel;

[0011] The grinding wheels on both sides are symmetrically arranged on the left and right sides of the upper end of the tap to be processed.

[0012] As a further optimization, in order to drive the grinding wheel drive frames and grinding wheels on both sides to move in opposite directions, the bidirectional drive frame includes:

[0013] The first rectangle is set horizontally;

[0014] The first rectangular frame has a first bidirectional threaded rod rotatably mounted on the left and right sides of its inner wall.

[0015] A first drive motor is fixedly mounted at the end of the first rectangular frame, and its output end passes through the outer wall of the first rectangular frame and is fixedly connected to the end of the first bidirectional threaded rod.

[0016] The first bidirectional threaded rod has first sliders symmetrically screwed onto both sides of its outer wall.

[0017] The first slider is slidably assembled within the first rectangular frame;

[0018] A mounting plate is fixedly assembled at the lower end of the first slider;

[0019] A fixing rod is fixedly mounted on the upper middle part of the outer wall of the first rectangular frame, and the upper end is fixedly set.

[0020] As a further optimization, to facilitate the replacement of the grinding wheel, the grinding wheel drive frame includes:

[0021] The second drive motor has a round rod fixedly connected to its lower output end;

[0022] A first circular ring is fixedly sleeved on the upper end of the outer wall of the round rod;

[0023] The grinding wheel is sleeved on the outer wall of the round rod and abuts against the bottom surface of the first ring.

[0024] A second ring is fitted onto the lower end of the outer wall of the round rod, which abuts against the bottom surface of the grinding wheel.

[0025] The lower end of the round rod is fixedly connected to a screw rod, and a fixing nut is screwed onto its outer wall;

[0026] The fixing nut abuts against the bottom surface of the second ring.

[0027] As a further optimization, in order to clamp the taps to be processed and to simultaneously clamp multiple taps to be processed together for end grinding, the tap clamping mechanism includes:

[0028] A bidirectional active clamping mechanism is longitudinally fixedly mounted on the top surface of the frame;

[0029] Both sides of the bidirectional active clamping mechanism on the top surface of the frame are fixedly provided with bidirectional passive clamping mechanisms;

[0030] The two movable parts on both sides of the bidirectional active clamping mechanism are connected to the two movable parts on both sides of the bidirectional passive clamping mechanism by connecting rods.

[0031] As a further optimization, in order to drive the two first clamping plates on both sides to move towards or in opposite directions, the bidirectional active clamping mechanism includes:

[0032] The second rectangle is set vertically;

[0033] The second rectangular frame has a second bidirectional threaded rod rotatably mounted on the front and rear sides of its inner wall, and a first clamping plate is symmetrically screwed onto the two sides of its outer wall;

[0034] The first clamping plate is slidably assembled within the second rectangular frame;

[0035] The rear end of the second rectangular frame is fixedly equipped with a third drive motor, the front end of which passes through the outer wall of the second rectangular frame and is fixedly connected to the end of the second bidirectional threaded rod;

[0036] The upper inner sides of the first clamping plates on both sides are symmetrically fixedly equipped with first assembled clamping block structures.

[0037] The first clamping plates on both sides are connected to the movable parts on both sides of the bidirectional driven clamping mechanism through connecting rods.

[0038] As a further optimization, in order to enable the second clamping plates on both sides of the bidirectional active clamping mechanism to move in opposite directions or towards each other by driving the first clamping plates on both sides, the bidirectional driven clamping mechanism includes:

[0039] The third rectangle is set vertically;

[0040] The inner wall of the third rectangular frame is rotatably fitted with guide rods on both the front and rear sides.

[0041] The guide rod has a second clamping plate sleeved on both the front and rear sides of its outer wall;

[0042] The second clamping plates on both sides are connected to the first clamping plates on both sides one by one via connecting rods;

[0043] The upper inner sides of the second clamping plates on both sides are symmetrically fixedly equipped with second assembled clamping block structures.

[0044] The first assembled clamping block structure and the second assembled clamping block structure have the same structure.

[0045] As a further optimization, to facilitate the installation and removal of the clamping blocks, clamping blocks with different arc-shaped concave surfaces are used for taps of different outer diameters. The first assembled clamping block structure includes:

[0046] The clamping block has two parts, one at the top and one at the bottom, and the inner side of the clamping block has an arc-shaped concave surface.

[0047] An ear plate is fixedly fitted to the upper end of the outer side surface of the clamping block;

[0048] A connecting block is fixedly assembled on the inner side of the first clamping plate corresponding to the clamping block;

[0049] The upper end of the connecting block is provided with a connecting groove corresponding to the ear plate, and the bottom surface is provided with a threaded hole;

[0050] The ear plate is inserted into the corresponding connecting groove, and the ear plate has a fixing bolt with its lower end screwed into the threaded hole.

[0051] As a further optimization, in order to avoid wear on the outer wall of the tap being processed by contacting it with the rubber pad, the arc-shaped concave surface of the clamping block is glued and fixed with a rubber pad.

[0052] As a further optimization, in order to improve the anti-slip performance of the inner side of the rubber pad and to provide more stable clamping and positioning of the tap to be processed, the inner side of the rubber pad is integrally formed with wavy protrusions in a uniform longitudinal direction.

[0053] As a further optimization, in order to utilize the hollow shell to store items, the frame is specifically a hollow shell with a sliding door on its outer wall.

[0054] This utility model provides an improved tap grinding machine, which has the following improvements and advantages compared with the prior art:

[0055] The grinding mechanism drives the grinding wheels fixed on the two grinding wheel drive frames to move in opposite directions or in the opposite direction through a bidirectional drive frame. The distance between the two grinding wheels can be adjusted, and both sides of the tap shank are ground at the same time. The forces on both sides of the tap shank cancel each other out, which reduces the stability requirements of the clamping mechanism. At the same time, the processing efficiency is improved because both sides of the tap shank are processed at the same time. Attached Figure Description

[0056] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0057] Figure 1 This is a schematic diagram of the structure of this utility model;

[0058] Figure 2 This is a schematic diagram of the grinding mechanism structure of this utility model;

[0059] Figure 3 This is a schematic diagram of the tap clamping mechanism of this utility model;

[0060] Figure 4 This is a schematic diagram of the bidirectional active clamping mechanism of this utility model;

[0061] Figure 5 This is a schematic diagram of the first assembled clamping block structure of this utility model.

[0062] Explanation of reference numerals in the attached figures:

[0063] 1-Frame, 2-Tap clamping mechanism, 21-Bidirectional active clamping mechanism, 211-Third drive motor, 212-Second rectangular frame, 213-Second bidirectional threaded rod, 214-First clamping plate, 215-First assembled clamping block structure, 2151-Clamping block, 2152-Connecting block, 2153-Connecting groove, 2154-Threaded hole, 2155-Ear plate, 2156-Fixing bolt, 2157-Rubber pad, 22-Bidirectional driven clamping mechanism, 221-Third rectangular frame, 222-With guide rod, 22 3-Second clamping plate, 224-Second assembled clamping block structure, 23-Connecting rod, 3-Grinding mechanism, 31-Bidirectional drive frame, 311-First drive motor, 312-First rectangular frame, 313-First bidirectional threaded rod, 314-First slider, 315-Mounting plate, 316-Fixing rod, 32-Grinding wheel drive frame, 321-Second drive motor, 322-Round rod, 323-First ring, 324-Screw, 325-Fixing nut, 326-Second ring, 33-Grinding wheel, 4-Corrugated protrusion. Detailed Implementation

[0064] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0065] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0066] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0067] Please see Figure 1-5 This utility model provides a technical solution: a tap grinding machine, comprising:

[0068] The frame 1 has a tap clamping mechanism 2 fixedly mounted on its top surface, which holds the tap to be processed.

[0069] A grinding mechanism 3 is fixedly installed above the tap clamping mechanism 2, which includes:

[0070] The bidirectional drive frame 31 has grinding wheel drive frames 32 fixedly mounted on the lower ends of its two movable parts;

[0071] The grinding wheel 33 is mounted on the lower end of the grinding wheel drive frame 32;

[0072] The two grinding wheels 33 are symmetrically arranged on the left and right sides of the upper end of the tap to be processed.

[0073] Specifically, in this embodiment, the frame 1 is a mounting platform for mounting the tap clamping mechanism 2; the upper end of the grinding mechanism 3 is fixed on the top mounting frame.

[0074] Furthermore, the grinding mechanism 3 drives the grinding wheels 33 fixed on the two grinding wheel drive frames 32 to move in opposite directions or in the opposite direction through the bidirectional drive frame 31. The distance between the two grinding wheels 33 can be adjusted so that both sides of the tap shank are ground at the same time. The forces on both sides of the tap shank cancel each other out, which reduces the stability requirements of the clamping mechanism. At the same time, the processing efficiency is improved because both sides of the tap shank are processed at the same time.

[0075] More specifically, the grinding wheel 33 is detachably mounted on the lower end of the grinding wheel drive frame 32, which facilitates the disassembly and replacement of the grinding wheel 33;

[0076] It is understandable that the two grinding wheel drive frames 32 are connected to an external controller, which controls the two grinding wheel drive frames 32 to synchronously drive the grinding wheels 33 to rotate, and to synchronously grind both sides of the tap shank.

[0077] In some embodiments, the bidirectional drive frame 31 includes:

[0078] The first rectangular frame 312 is set horizontally;

[0079] The first bidirectional threaded rod 313 is rotatably assembled on the left and right sides of the inner wall of the first rectangular frame 312;

[0080] A first drive motor 311 is fixedly mounted at the end of the first rectangular frame 312, and its output end passes through the outer wall of the first rectangular frame 312 and is fixedly connected to the end of the first bidirectional threaded rod 313.

[0081] The first bidirectional threaded rod 313 has first sliders 314 symmetrically threaded on both sides of its outer wall;

[0082] The first slider 314 is slidably assembled inside the first rectangular frame 312;

[0083] The lower end of the first slider 314 is fixedly fitted with a mounting plate 315;

[0084] A fixing rod 316 is fixedly mounted on the upper middle part of the outer wall of the first rectangular frame 312, and the upper end is fixedly set.

[0085] Specifically in this embodiment, the first drive motor 311 is a servo motor, which is connected to an external power supply and an external controller.

[0086] Furthermore, the first drive motor 311 drives the first bidirectional threaded rod 313 to rotate, and the rotation of the first bidirectional threaded rod 313 drives the first sliders 314 screwed to both sides of the outer wall to move in opposite directions along the first rectangular frame 312. The movement stroke of the first sliders 314 on both sides is controlled by an external controller.

[0087] More specifically, the first sliders 314 on both sides move towards each other, driving the mounting plate 315, the grinding wheel drive frame 32 and the grinding wheel 33. The grinding wheel drive frame 32 drives the grinding wheel 33 to rotate, and the rotating grinding wheels 33 on both sides grind the two sides of the tap shank.

[0088] Understandably, the retaining rod 316 is used to secure the bidirectional drive frame 31 to the top mounting bracket.

[0089] In some embodiments, the grinding wheel drive frame 32 includes:

[0090] The second drive motor 321 has a round rod 322 fixedly connected to its lower output end;

[0091] A first circular ring 323 is fixedly sleeved on the upper end of the outer wall of the round rod 322;

[0092] The grinding wheel 33 is sleeved on the outer wall of the round rod 322 and abuts against the bottom surface of the first ring 323;

[0093] A second circular ring 326 is sleeved on the lower end of the outer wall of the round rod 322, which abuts against the bottom surface of the grinding wheel 33.

[0094] A screw rod 324 is fixedly connected to the lower end of the round rod 322, and a fixing nut 325 is screwed onto its outer wall;

[0095] The fixing nut 325 abuts against the bottom surface of the second ring 326.

[0096] Specifically in this embodiment, the second drive motor 321 is a servo motor, which is connected to an external power supply and an external controller.

[0097] Furthermore, the second drive motor 321 drives the assembled grinding wheel 33 to rotate;

[0098] More specifically, after removing the fixing nut 325, the grinding wheel 33 can be removed. A new grinding wheel 33 is fitted onto the outer wall of the round rod 322 and abuts against the bottom surface of the first ring 323. Finally, the second ring 326 is fitted onto the lower end of the round rod 322 and abuts against the bottom surface of the grinding wheel 33. Finally, the fixing nut 325 is screwed onto the outer wall of the screw rod 324. The fixing nut 325 abuts against the bottom surface of the second ring 326, and the first ring 323 and the second ring 326 clamp and position the grinding wheel 33, thus completing the replacement.

[0099] In some embodiments, the tap clamping mechanism 2 includes:

[0100] A bidirectional active clamping mechanism 21 is longitudinally fixedly mounted on the top surface of the frame 1;

[0101] Both sides of the bidirectional active clamping mechanism 21 on the top surface of the frame 1 are fixedly provided with bidirectional passive clamping mechanisms 22;

[0102] The two movable parts on both sides of the bidirectional active clamping mechanism 21 are connected to the two movable parts on both sides of the bidirectional passive clamping mechanism 22 by connecting rods 23.

[0103] Specifically in this embodiment, the bidirectional active clamping mechanism 21 is electrically driven to move the two movable parts in opposite directions, and the two movable parts on both sides of the bidirectional active clamping mechanism 21 drive the two movable parts on both sides of the bidirectional driven clamping mechanism 22 to move in opposite directions via the connecting rod 23.

[0104] In some embodiments, the bidirectional active clamping mechanism 21 includes:

[0105] The second rectangular frame 212 is set vertically;

[0106] The second rectangular frame 212 has a second bidirectional threaded rod 213 rotatably assembled on the front and rear sides of its inner wall, and a first clamping plate 214 is symmetrically screwed onto its outer wall.

[0107] The first clamping plate 214 is slidably assembled inside the second rectangular frame 212;

[0108] The rear end of the second rectangular frame 212 is fixedly equipped with a third drive motor 211, whose output front end passes through the outer wall of the second rectangular frame 212 and is fixedly connected to the end of the second bidirectional threaded rod 213.

[0109] The upper inner sides of the first clamping plates 214 on both sides are symmetrically fixedly equipped with first assembled clamping block structures 215;

[0110] The first clamping plates 214 on both sides are connected to the movable parts on both sides of the bidirectional driven clamping mechanism 22 through connecting rods 23.

[0111] Specifically, in this embodiment, the third drive motor 211 is a servo motor connected to an external power supply and an external controller;

[0112] Furthermore, the third drive motor 211 drives the second bidirectional threaded rod 213 to rotate, and the second bidirectional threaded rod 213 drives the first clamping plates 214 screwed to both sides of its outer wall to move in opposite directions along the second rectangular frame 212. The first clamping plates 214 moving in opposite directions drive the first assembled clamping block structure 215 to clamp on the outer wall of the tap to be processed.

[0113] More specifically, the upper end of the first clamping plate 214 extends a longer distance into the second rectangular frame 212, which is suitable for clamping the lower end of the outer wall of the tap to be processed;

[0114] It is understandable that the movement of the first clamping plates 214 on both sides drives the moving parts on both sides of the bidirectional driven clamping mechanism 22 to move accordingly via the connecting rod 23.

[0115] In some embodiments, the bidirectional driven clamping mechanism 22 includes:

[0116] The third rectangular frame 221 is set vertically;

[0117] Guide rods 222 are rotatably mounted on the front and rear sides of the inner wall of the third rectangular frame 221;

[0118] The guide rod 222 has a second clamping plate 223 sleeved on both the front and rear sides of its outer wall;

[0119] The second clamping plates 223 on both sides are connected to the first clamping plates 214 on both sides through connecting rods 23;

[0120] The upper inner sides of the second clamping plates 223 on both sides are symmetrically fixedly equipped with second assembled clamping block structures 224;

[0121] The first assembled clamping block structure 215 and the second assembled clamping block structure 224 have the same structure.

[0122] Specifically in this embodiment, the second clamping plates 223 on both sides move towards or in opposite directions under the action of the moving first clamping plate 214, and the moving second clamping plates 223 slide along the guide rod 222.

[0123] Furthermore, the upper end of the second clamping plate 223 extends a longer distance from the third rectangular frame 221. The moving second clamping plate 223 drives the second assembled clamping block structure 224 to clamp the outer wall of the tap to be processed, which is suitable for clamping the lower end of the outer wall of the tap to be processed.

[0124] More specifically, multiple bidirectional driven clamping mechanisms 22 can be provided. In this embodiment, four are provided, symmetrically arranged in pairs on both sides of the bidirectional active clamping mechanism 21. Multiple bidirectional driven clamping mechanisms 22 and bidirectional active clamping mechanism 21 can be used together to clamp and position five taps to be processed.

[0125] In some embodiments, the first assembled clamping block structure 215 includes:

[0126] Clamping block 2151, two of which are provided at the top and bottom, and the inner side of clamping block 2151 is provided with an arc-shaped concave surface;

[0127] An ear plate 2155 is fixedly fitted to the upper part of the outer side surface of the clamping block 2151;

[0128] A connecting block 2152 is fixedly assembled on the inner side of the first clamping plate 214 corresponding to the clamping block 2151;

[0129] The upper end of the connecting block 2152 is provided with a connecting groove 2153 corresponding to the ear plate 2155, and the bottom surface is provided with a threaded hole 2154.

[0130] The ear plate 2155 is inserted into the corresponding connecting groove 2153, and the ear plate 2155 is threaded through a fixing bolt 2156 whose lower end is screwed into the threaded hole 2154.

[0131] Specifically in this embodiment, the upper ear plate 2155 of the clamping block 2151 is fixed in the upper connecting groove 2153 of the connecting block 2152 by the fixing bolt 2156. The clamping block 2151 and the connecting block 2152 can be separated by removing the fixing bolt 2156. After removing the clamping block 2151, a new clamping block 2151 with a different arc-shaped concave surface on the inner wall can be replaced.

[0132] Furthermore, the arc-shaped concave surface of the inner side of the selected clamping block 2151 can completely fit against the outer wall of the tap to be processed during clamping, ensuring the stability of clamping.

[0133] In some embodiments, a rubber pad 2157 is attached to the concave surface of the clamping block 2151, and the rubber pad 2157 contacts the clamped tap to be processed, so as to avoid wear on the outer wall of the tap to be processed.

[0134] Furthermore, the rubber pad 2157 is fixed by adhesive and can be peeled off for replacement.

[0135] In some embodiments, the inner surface of the rubber pad 2157 is integrally formed with corrugated protrusions 4 in a uniform longitudinal direction. The corrugated protrusions 4 are uniformly arranged to improve the roughness of the inner surface of the rubber pad 2157. Combined with the deformable characteristics of the rubber pad 2157, the tap to be processed is clamped and positioned more stably.

[0136] In some embodiments, the frame 1 is specifically a hollow shell with a sliding door on its outer wall. The hollow shell is used to store items, and the sliding door on the outer wall of the hollow shell is easy to open and close, making it convenient to use.

[0137] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A tap grinding machine, characterized in that, include: The frame (1) has a tap clamping mechanism (2) fixedly mounted on its top surface, which holds the tap to be processed. A grinding mechanism (3) is fixedly provided above the tap clamping mechanism (2), which includes: A bidirectional drive frame (31) has grinding wheel drive frames (32) fixedly mounted on the lower ends of its two movable parts; The grinding wheel drive frame (32) is equipped with a grinding wheel (33) at its lower end; The grinding wheels (33) on both sides are symmetrically arranged on the left and right sides of the upper end of the tap to be processed.

2. The tap grinding machine according to claim 1, characterized in that, The bidirectional drive frame (31) includes: The first rectangular frame (312) is set horizontally; The first rectangular frame (312) has a first bidirectional threaded rod (313) rotatably mounted on the left and right sides of its inner wall; The first rectangular frame (312) is fixedly equipped with a first drive motor (311) at its end, and its output end passes through the outer wall of the first rectangular frame (312) and is fixedly connected to the end of the first bidirectional threaded rod (313). The first bidirectional threaded rod (313) has first sliders (314) symmetrically threaded on both sides of its outer wall; The first slider (314) is slidably assembled inside the first rectangular frame (312); The lower end of the first slider (314) is fixedly fitted with a mounting plate (315); A fixing rod (316) is fixedly mounted on the upper middle part of the outer wall of the first rectangular frame (312), and the upper end is fixedly set.

3. The tap grinding machine according to claim 1, characterized in that, The grinding wheel drive frame (32) includes: The second drive motor (321) has a round rod (322) fixedly connected to its lower output end; The upper end of the outer wall of the round rod (322) is fixedly sleeved with a first circular ring (323); The grinding wheel (33) is sleeved on the outer wall of the round rod (322) and abuts against the bottom surface of the first ring (323); The lower end of the outer wall of the round rod (322) is fitted with a second ring (326), which abuts against the bottom surface of the grinding wheel (33); The lower end of the round rod (322) is fixedly connected to a screw rod (324), and a fixing nut (325) is screwed onto its outer wall; The fixing nut (325) abuts against the bottom surface of the second ring (326).

4. A tap grinding machine according to claim 1, characterized in that, The tap clamping mechanism (2) includes: A bidirectional active clamping mechanism (21) is longitudinally fixedly mounted on the top surface of the frame (1); The bidirectional active clamping mechanism (21) on the top surface of the frame (1) is fixedly provided with bidirectional passive clamping mechanisms (22) on both sides; The two movable parts on both sides of the bidirectional active clamping mechanism (21) are connected to the two movable parts on both sides of the bidirectional passive clamping mechanism (22) by connecting rods (23).

5. A tap grinding machine according to claim 4, characterized in that, The bidirectional active clamping mechanism (21) includes: The second rectangular frame (212) is set vertically; The second rectangular frame (212) has a second bidirectional threaded rod (213) rotatably mounted on the front and rear sides of its inner wall, and a first clamping plate (214) is symmetrically screwed on both sides of its outer wall; The first clamping plate (214) is slidably assembled inside the second rectangular frame (212); The rear end of the second rectangular frame (212) is fixedly equipped with a third drive motor (211), and its output front end passes through the outer wall of the second rectangular frame (212) and is fixedly connected to the end of the second bidirectional threaded rod (213); The upper inner sides of the first clamping plates (214) on both sides are symmetrically fixed with first assembled clamping block structures (215); The first clamping plates (214) on both sides are connected to the movable parts on both sides of the bidirectional driven clamping mechanism (22) through connecting rods (23).

6. A tap grinding machine according to claim 5, characterized in that, The bidirectional driven clamping mechanism (22) includes: The third rectangle (221) is set vertically; The inner wall of the third rectangular frame (221) is rotatably fitted with guide rods (222) on both the front and rear sides; The guide rod (222) has a second clamping plate (223) sleeved on both the front and rear sides of its outer wall; The second clamping plates (223) on both sides are connected to the first clamping plates (214) on both sides through connecting rods (23); The upper inner sides of the second clamping plates (223) on both sides are symmetrically fixed with second assembled clamping block structures (224); The first assembled clamping block structure (215) and the second assembled clamping block structure (224) have the same structure.

7. A tap grinding machine according to claim 6, characterized in that, The first assembled clamping block structure (215) includes: The clamping block (2151) has two clamping blocks, one above the other, and the inner side of the clamping block (2151) has an arc-shaped concave surface. An ear plate (2155) is fixedly fitted on the upper end of the outer side surface of the clamping block (2151); A connecting block (2152) is fixedly assembled on the inner side of the first clamping plate (214) corresponding to the clamping block (2151); The upper end of the connecting block (2152) is provided with a connecting groove (2153) corresponding to the ear plate (2155), and the bottom surface is provided with a threaded hole (2154); The ear plate (2155) is inserted into the corresponding connecting groove (2153), and the ear plate (2155) is perforated by a fixing bolt (2156) whose lower end is screwed into the threaded hole (2154).

8. A tap grinding machine according to claim 7, characterized in that, The arc-shaped concave surface of the clamping block (2151) is fixed with a rubber pad (2157).

9. A tap grinding machine according to claim 8, characterized in that, The inner side of the rubber pad (2157) is integrally formed with a longitudinally uniform corrugated protrusion (4).

10. A tap grinding machine according to claim 1, characterized in that, The frame (1) is specifically a hollow shell with a sliding door on its outer wall.

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