A grinder for machining internal threads

Abstract

The present application relates to a kind of grinding machine for processing internal thread, including support seat, mounting bracket slidingly disposed on the support seat, driving member is arranged on the mounting bracket, connecting assembly and the grinding wheel bending rod piece fixed on the connecting assembly;The mounting bracket can be adjusted position in vertical direction by sliding on support seat;The driving member is used to drive the operation of grinding wheel bending rod piece;The connecting assembly includes second fixed part and fine adjustment piece, the fine adjustment piece includes connecting block, second fixed plate and second connecting bolt, second waist type hole is opened in the connecting block, installation hole is opened in the corresponding position of second fixed part and second waist type hole, and connecting block is fixed on second fixed part using fixed screw;The grinding wheel bending rod piece is fixed on the connecting block of fine adjustment piece.The grinding machine for processing internal thread of the present application can be flexibly adapted to processing demand, and accurately lock the position of grinding wheel bending rod piece, guarantee grinding precision and stability.

Description

Technical Field

[0001] This invention relates to the field of grinding technology, and more specifically to a grinding machine for machining internal threads. Background Technology

[0002] In the field of machining, internal thread grinding machines are used to perform high-precision grinding of the internal threads of workpieces. The performance of its core component, the grinding wheel mechanism, directly determines the accuracy and efficiency of internal thread processing.

[0003] While existing internal thread grinding machine grinding wheel mechanisms can adapt to some processing needs through tilt angle adjustment, they have significant limitations. They only focus on tilt angle adjustment and lack the ability to precisely fine-tune the key actuators of the grinding wheel in the vertical direction. In addition, existing grinding machines use rigid shaft connections, which are rigid but lack flexibility, making it difficult to adapt to complex spatial layouts and the needs of multi-variety, small-batch production. When processing internal threads of different specifications, the position of the rigid shaft needs to be frequently adjusted. In high-speed grinding, the rigid shaft connection easily transmits and amplifies vibrations, exacerbating vibration interference between the grinding wheel and the workpiece, resulting in a shorter service life of the equipment.

[0004] Therefore, it is necessary to provide a new grinding machine for machining internal threads. Summary of the Invention

[0005] Based on the aforementioned problems in the existing technology, the purpose of this invention is to provide a grinding machine for machining internal threads. This machine can flexibly adapt to machining requirements and accurately lock the position of the grinding wheel bending rod by means of sliding adjustment of the mounting bracket on the support base, vertical fine adjustment of the connecting block by the second connecting bolt of the fine adjustment component in the connecting assembly, and fixing by the cooperation of the second waist-shaped hole and the fixing screw, thus ensuring grinding accuracy and stability.

[0006] The technical solution adopted by this invention to solve its technical problem is as follows: This invention discloses a grinding machine for processing internal threads, including a support base, a mounting bracket slidably disposed on the support base, a driving component disposed on the mounting bracket, a connecting assembly, and a grinding wheel bending rod fixed on the connecting assembly; the mounting bracket can be adjusted in the vertical direction by sliding on the support base; the driving component is used to drive the grinding wheel bending rod to rotate; the connecting assembly includes a second fixing part and a fine-tuning component, the fine-tuning component includes a connecting block, a second fixing plate and a second connecting bolt, the second connecting bolt is disposed through the second fixing plate, the other end of the second connecting bolt is fixed to the connecting block, the position of the connecting block in the vertical direction can be finely adjusted by rotating the second connecting bolt, the connecting block has second oblong holes on both sides, and mounting holes are provided at the corresponding positions of the second fixing part and the second oblong holes, the connecting block is fixed to the second fixing part by a fixing screw passing through the second oblong holes and the corresponding mounting holes in sequence; the grinding wheel bending rod is fixed on the connecting block of the fine-tuning component.

[0007] Furthermore, a sliding groove is provided on the side of the second fixing part near the fine-tuning component, and a locking part corresponding to the sliding groove is provided on the side of the connecting block near the second fixing part, so that the connecting block can move vertically on one side of the second fixing part.

[0008] Furthermore, the driving component includes a drive motor and a transmission flexible shaft. One end of the transmission flexible shaft is connected to the output shaft of the drive motor, and the other end is connected to the grinding wheel bending rod. The transmission flexible shaft is a bundle of steel wires spirally wound in multiple layers.

[0009] Furthermore, the grinding wheel bending member includes a connecting rod, a grinding wheel disposed at one end of the connecting rod, and a mounting block disposed at the other end of the connecting rod; the mounting block is connected to the connecting block by fixing screws, and a through hole is provided in the center of the connecting rod and the mounting block, which is suitable for connecting to the grinding wheel through a transmission flexible shaft. The grinding wheel is rotatably connected to one end of the connecting rod, and there is a certain tilt angle between the grinding wheel and the connecting rod.

[0010] Furthermore, the connecting assembly also includes a connecting part and a first fixing part connected to the driving component; the connecting part is provided with a first waist-shaped hole, and a plurality of evenly arranged second mounting holes are provided in the horizontal direction of the mounting plate of the mounting bracket at the mounting position corresponding to the first waist-shaped hole.

[0011] Furthermore, the first fixing part is adapted to fix the side of the drive motor near the output end, and one end of the drive motor is locked by a locking screw.

[0012] Furthermore, the support base is provided with a first adjustment groove, which is provided vertically in multiple ways and has a cross-section that is approximately T-shaped.

[0013] Furthermore, the mounting bracket includes a mounting plate, an adjusting member disposed above the mounting plate, a first mounting hole formed on the mounting plate, a bolt assembly disposed on the mounting plate, and a mounting portion.

[0014] Furthermore, the adjusting component includes a first fixing plate and a first connecting bolt. The first fixing plate is fixed above the support base, and the first connecting bolt passes through the first fixing plate and is fixed at the other end to the mounting plate.

[0015] Furthermore, the bolt assembly includes a bolt, a nut, and a washer. The head of the bolt engages in a T-shaped first adjustment groove, the shank passes through a first mounting hole and is secured by the nut, and the washer is located between the nut and the mounting plate.

[0016] The beneficial effects of this invention are as follows: The grinding machine for machining internal threads of this invention includes a support base, a mounting bracket slidably disposed on the support base, a drive component disposed on the mounting bracket, a connecting assembly, and a grinding wheel bending member fixed on the connecting assembly; the mounting bracket can be adjusted in the vertical direction by sliding on the support base; the drive component is used to drive the grinding wheel bending member to rotate; the connecting assembly includes a second fixing part and a fine-tuning component, the fine-tuning component includes a connecting block, a second fixing plate, and a second connecting bolt, the second connecting bolt is disposed through the second fixing plate, the other end of the second connecting bolt is fixed to the connecting block, the position of the connecting block in the vertical direction can be finely adjusted by rotating the second connecting bolt, the connecting block has second oblong holes on both sides, and mounting holes are provided at corresponding positions of the second fixing part and the second oblong holes, the connecting block is fixed to the second fixing part by using fixing screws that pass through the second oblong holes and the corresponding mounting holes in sequence; the grinding wheel bending member is fixed on the connecting block of the fine-tuning component. The grinding machine for machining internal threads of the present invention achieves vertical adjustment by sliding the mounting bracket on the support base. Combined with the vertical fine adjustment of the connecting block by the second connecting bolt of the fine adjustment component in the connecting assembly, and the fixing by the cooperation of the second waist-shaped hole and the fixing screw, it can flexibly adapt to different processing requirements and accurately lock the position of the grinding wheel bending rod, ensuring the grinding accuracy and stability under the drive of the drive component. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the structure of the grinding machine for machining internal threads according to the present invention;

[0019] Figure 2 This is an exploded view of the grinding machine for machining internal threads according to the present invention;

[0020] Figure 3 This is an exploded view of the support base and mounting bracket of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the driving component of the present invention;

[0022] Figure 5 This is an exploded view of the connection component of the present invention;

[0023] Figure 6 This is a structural schematic diagram of the grinding wheel bending member of the present invention.

[0024] The component names and their numbers in the diagram are as follows:

[0025] Support base 1, first adjustment groove 11, limit block 12;

[0026] Mounting bracket 2, mounting plate 21, second mounting hole 211, adjusting component 22, first fixing plate 221, first connecting bolt 222, first mounting hole 23, bolt assembly 24, bolt 241, nut 242, washer 243, mounting part 25;

[0027] Drive component 3, drive motor 31, transmission flexible shaft 32;

[0028] Connecting component 4, connecting part 41, first waist-shaped hole 411, first fixing part 42, second fixing part 43, sliding groove 431, fine-tuning part 44, connecting block 441, second waist-shaped hole 4411, second fixing plate 442, second connecting bolt 443;

[0029] Grinding wheel bending member 5, connecting rod 51, grinding wheel 52, mounting block 53. Detailed Implementation

[0030] To make the technical problem to be solved, the technical solution, and the beneficial effects of this invention clearer, the invention will now be described in detail with reference to the accompanying drawings. This drawing is a simplified schematic diagram, illustrating only the basic aspects of the invention, and therefore only shows the components relevant to the invention. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0031] like Figure 1-2 As shown, the present invention provides a grinding machine 100 for machining internal threads, including a support base 1, a mounting bracket 2 slidably disposed on the support base 1, a drive component 3 disposed on the mounting bracket 2, a connecting assembly 4, and a grinding wheel bending rod 5 fixed on the connecting assembly 4. The support base 1 provides basic support for the entire grinding wheel mechanism 100, ensuring overall stability; the mounting bracket 2 supports the drive component 3, the connecting assembly 4, and the grinding wheel bending rod 5, and its vertical position can be adjusted by sliding on the support base 1 to adapt to different machining requirements; the drive component 3 provides power to drive the grinding wheel bending rod 5 to rotate, allowing the grinding wheel to perform grinding action; the connecting assembly 4 connects and mounts the grinding wheel bending rod 5, and can adjust the position of the grinding wheel bending rod 5 in both horizontal and vertical directions; the grinding wheel bending rod 5 is used to perform internal thread grinding on the workpiece under the drive of the drive component 3, and its bending shape is adapted to the internal thread machining scenario.

[0032] In some of these embodiments, such as Figure 3As shown, the support base 1 is roughly inverted T-shaped, with a horizontally extending mounting surface at the bottom and a vertical plate structure at the top. The bottom of the support base 1 is used to mount on an internal thread grinding machine and cooperates with the slide rail on the internal thread grinding machine (not shown in the figure), suitable for moving the entire grinding wheel mechanism 100. A mounting bracket 2 is provided on the upper part of the support base 1, and a first adjustment groove 11 is provided on the support base 1. Multiple first adjustment grooves 11 are vertically provided, and the cross-section of the first adjustment groove 11 is roughly T-shaped, used to cooperate with the mounting bracket 2 to adjust the mounting bracket 2 in the vertical direction. A limit block 12 is also fixed on the support base 1, vertically mounted on the support base 1, for further limiting the position of the mounting bracket 2. By setting the T-shaped first adjustment groove 11 and the limit block 12, precise guidance is provided for the adjustment of the mounting bracket 2, and offset during the adjustment process is avoided, improving the reliability of the position adjustment.

[0033] In some embodiments, the mounting bracket 2 includes a mounting plate 21, an adjusting member 22 disposed above the mounting plate 2, a first mounting hole 23 formed on the mounting plate 21, a bolt assembly 24 disposed on the mounting plate 2, and a mounting portion 25. The mounting plate 21 is generally flat, and a sliding groove is formed on the side of the mounting plate 21 near the support base 1. The sliding groove cooperates with a limiting block 12 on the support base 1, suitable for slidingly engaging the mounting plate 21 with the support base 1. The adjusting member 22 is disposed above the mounting plate 21 and includes a first fixing plate 221 and first connecting bolts 222. The first fixing plate 221 is fixed above the support base 1, and one side of the first fixing plate 221 extends from the side of the support base 1, suitable for cooperating with the position of the mounting plate 21. Multiple first connecting bolts 222 are provided, and the multiple first connecting bolts 222 pass through the first fixing plate 221. The other ends of the multiple first connecting bolts 222 are fixed to the mounting plate 21. As an example, four first connecting bolts 222 are provided, with two threaded holes on the top of the mounting plate 21 to mate with two of the first connecting bolts 222. The bottom ends of the other two first connecting bolts 222 are fixed to the ends of the mounting plate 21. When adjusting the height of the mounting plate 21, the depth of the two first connecting bolts 222 in the two threaded holes is adjusted by rotating the first connecting bolts 222, and the height of the other two first connecting bolts 222 above the first fixed plate 221 is adjusted by rotating the other two first connecting bolts 222, thereby ensuring that the adjusting member 22 can be securely connected to the mounting plate 21.

[0034] In some embodiments, multiple first mounting holes 23 are provided, and the positions of the first mounting holes 23 correspond to the positions of the first adjusting grooves 11. The number of bolt assemblies 24 is equal to the number of first mounting holes 23, and multiple bolt assemblies 24 are installed in the first mounting holes 23. The bolt assembly 24 includes a bolt 241, a nut 242, and a washer 243. The head of the bolt 241 engages in the T-shaped first adjusting groove 11, and the shank of the bolt 241 extends out of the first adjusting groove 11, passes through the first mounting hole 23, and is fixed by the nut 242. The washer 243 is placed between the nut 242 and the mounting plate 21 to increase the contact area and prevent loosening. When it is necessary to adjust the vertical position of the drive component 3, connecting assembly 4, and grinding wheel bending rod 5, first loosen the bolt assembly 24 located on the first adjustment groove 11, and then adjust the adjusting component 22. That is, adjust the depth of the two first connecting bolts 222 in the two threaded holes by rotating the first connecting bolt 222, and adjust the height of the other two first connecting bolts 222 above the fixing plate 22 by rotating the other two first connecting bolts 222. This will drive the mounting plate 21 and the drive component 3, connecting assembly 4, and grinding wheel bending rod 5 fixed on the mounting plate 21 to be adjusted vertically. At this time, the head of the bolt 241 moves to the appropriate height in the T-shaped first adjustment groove 11. After the adjustment is completed, tighten the nut 242 in the bolt assembly 24 to achieve a firm lock on the mounting plate 21. By setting the adjusting component 22 and cooperating the first adjustment groove 11 with the bolt assembly 24, the mounting bracket 2 can not only achieve the function of adjusting the height in the vertical direction, but also be firmly locked after the position is adjusted.

[0035] In some embodiments, the mounting portion 25 and the mounting plate 21 are integrally formed, thereby ensuring the connection strength between the mounting portion 25 and the mounting plate 21. The interior of the mounting portion 25 has a cylindrical cavity structure, which is suitable for mounting the drive member 3. After the drive member 3 is fixed in the internal cavity of the mounting portion 25, it is locked with locking screws. The output end of the drive member 3 extends out from one side of the mounting portion 25.

[0036] In some of these embodiments, such as Figure 4As shown, the drive unit 3 includes a drive motor 31 and a flexible drive shaft 32. The drive motor 31 includes a stator, rotor, commutator, brushes, and housing (not shown in the figure). The stator generates a magnetic field, and the rotor is the rotating part of the motor. The commutator is connected to the armature winding of the rotor, and the brushes contact the commutator. Through the sliding contact between the brushes and the commutator, the current from the external power supply is introduced into the armature winding of the rotor. The housing protects and supports the internal components. One end of the flexible drive shaft 32 is connected to the output shaft of the drive motor 31, and the other end of the flexible drive shaft 32 is connected to the grinding wheel bending member 5, suitable for driving the grinding wheel of the grinding wheel bending member 5 to rotate. The flexible drive shaft 32 has a certain degree of flexibility and can be bent to a certain extent to adapt to different installation and working space requirements. When the drive motor 32 is powered on, current flows into the armature winding through the brushes and commutator. According to the principle of electromagnetic induction, while current is generated in the rotor's armature winding, the magnetic field generated by the stator produces an electromagnetic force on the rotor's armature winding. Due to the action of the commutator, the direction of the current in the armature winding constantly changes, keeping the direction of the electromagnetic force on the armature winding consistent, thus driving the rotor to rotate continuously. The rotation of the rotor is transmitted to the transmission flexible shaft 32 through the output shaft. The transmission flexible shaft 32 then transmits the power to the grinding wheel bending member 5, driving the grinding wheel of the grinding wheel bending member 5 to rotate, thereby realizing the grinding process on the workpiece. The transmission flexible shaft 32 is a steel wire bundle made of multiple layers of spirally wound steel wire, with a structure similar to a single-twist steel wire rope, but with a very small twist pitch and a very large twist angle. The transmission flexible shaft 32 can flexibly transmit rotational motion and is suitable for scenarios requiring bending transmission. The drive motor 31 provides power, converting electrical energy into mechanical energy. This power is output through the flexible drive shaft 32, driving the grinding wheel to rotate at high speed. This provides the necessary cutting power for internal thread grinding, enabling the grinding wheel to perform efficient and precise grinding of the workpiece, ensuring the quality and efficiency of the internal thread machining. Simultaneously, the flexible drive shaft 32 increases the flexibility of power transmission. Power can be flexibly transmitted to the grinding wheel at the end of the bending member 5 of the grinding wheel without changing the installation position of the drive motor 31. The flexible drive shaft 32 combines flexibility and strength, adapting to bending paths while efficiently transmitting torque. This solves the problem of traditional rigid drive shafts being difficult to adapt to complex spaces. Furthermore, the flexibility of the shaft can buffer instantaneous impact forces during grinding, reducing damage to the motor and grinding wheel and extending the service life of the components.

[0037] In some of these embodiments, such as Figure 5As shown, the connecting assembly 4 includes a connecting part 41, a first fixing part 42 connected to the driving member 4, a second fixing part 43, and a fine-tuning part 44 disposed on one side of the second fixing part 43. The connecting assembly 4 is fixed on the mounting plate 21 of the mounting bracket 2. The connecting part 41 is located at the upper and lower ends of the connecting assembly 4. A first oblong hole 411 is provided on the connecting part 41. A plurality of evenly arranged second mounting holes 211 are provided in the horizontal direction at the mounting position corresponding to the first oblong hole 411 on the mounting plate 21. After adjusting the horizontal position of the connecting assembly 4, the corresponding second mounting hole 211 on the mounting plate 21 is selected, and fixing screws are used to pass through the first oblong hole 411 and the corresponding second mounting hole 211 in sequence to fix the connecting assembly 4 in a suitable position in the horizontal direction. By providing a first oblong hole 411 on the connecting part 41 and a plurality of evenly arranged second mounting holes 211 at corresponding positions on the mounting plate 21, the fixing screw can be passed through the appropriate second mounting hole 211 and its position further adjusted within the first oblong hole 411. This allows the connecting assembly 4 to be adjusted within a certain range in the horizontal direction, thus adapting to the processing length requirements of different workpieces. Furthermore, the cooperation between the first oblong hole 411 and the plurality of second mounting holes 21 enables the connecting assembly 4 to achieve stepless adjustment in the horizontal direction, accurately adapting to workpieces of different lengths while ensuring connection strength. The locking design of the first fixing part 42 prevents displacement of the drive motor 31 during operation, ensuring the stability of power transmission.

[0038] In some embodiments, the first fixing part 42 is adapted to fix the drive motor 31 near the output end, and one end of the drive motor 31 is locked by a locking screw to prevent relative displacement of the drive motor 31 during operation. The second fixing part 43 has a circular mounting hole adapted to allow the transmission flexible shaft 32 of the drive component 3 to pass through. A sliding groove 431 is provided on the side of the second fixing part 43 near the fine-tuning component 44, and the sliding groove 431 is used for the vertical movement of the fine-tuning component 44. The fine-tuning component 44 includes a connecting block 441, a second fixing plate 442, and a second connecting bolt 443. A engaging part corresponding to the sliding groove 431 is provided on the side of the connecting block 441 near the second fixing part 43, thereby allowing the connecting block 441 to move vertically on one side of the second fixing part 43. The connecting block 441 has a circular mounting hole adapted to allow the transmission flexible shaft 32 of the drive component 3 to pass through, and the connecting block 441 is adapted to be fixedly connected to the grinding wheel bending rod 5. The connecting block 441 has second oblong holes 4411 on both sides. Mounting holes are provided on the second fixing part 43 at corresponding positions to the second oblong holes 4411. Fixing screws are passed sequentially through the second oblong holes 4411 and the corresponding mounting holes to fix the connecting block 441 onto the second fixing part 43. A second fixing plate 442 is fixed above the second fixing part 43. A second connecting bolt 443 passes through the second fixing plate 442, and the other end of the second connecting bolt 443 is fixed to the connecting block 441. Since the engaging part on the connecting block 441 is slidably connected to the sliding groove 431 of the second fixing part 43, the vertical position of the connecting block 441 can be finely adjusted by rotating the second connecting bolt 443. After adjustment, the fixing screws are passed sequentially through the second oblong holes 4411 and the corresponding mounting holes to fix the connecting block 441 onto the second fixing part 43. The combination of the sliding groove 431, the second waist-shaped hole 4411 and the second connecting bolt 443 of the fine-tuning component 44 can realize the fine vertical adjustment of the grinding wheel bending rod 5, effectively optimize the bending degree of the transmission flexible shaft 32, reduce wear and extend the life of the flexible shaft; the multi-dimensional adjustment function allows the mechanism to adapt to the processing of various specifications of internal threads without replacing parts, reducing equipment costs and changeover time.

[0039] In some of these embodiments, such as Figure 6As shown, the grinding wheel bending member 5 is fixed on the fine-tuning member 44. The fine-tuning member 44 can fine-tune the vertical position of the grinding wheel bending member 5, thereby reducing the bending degree of the transmission flexible shaft 32 and reducing the wear degree of the transmission flexible shaft 32. The grinding wheel bending member 5 includes a connecting rod 51, a grinding wheel 52 disposed at one end of the connecting rod 51, and a mounting block 53 disposed at the other end of the connecting rod 51. The mounting block 53 is connected to the connecting block 441 by fixing screws. A through hole is opened in the center of the connecting rod 51 and the mounting block 53, which is suitable for the transmission flexible shaft 32 to be installed and connected to the grinding wheel 52. The grinding wheel 52 is rotatably connected to one end of the connecting rod 51, and there is a certain tilt angle between the grinding wheel 52 and the connecting rod 51. The transmission flexible shaft 32 transmits the rotational motion of the drive motor 31 to the grinding wheel 52 at the end of the connecting rod 51 to realize power transmission, thereby realizing the cutting of the internal thread of the workpiece. The grinding wheel bending rod 5 is perfectly adapted to the processing scenario of internal thread. It can penetrate into the workpiece and follow the thread trajectory, solving the problem that it is difficult to process internal threads with straight rod structure. The tilt angle of the grinding wheel 52 matches the tooth profile angle of the internal thread, ensuring the processing accuracy of the thread tooth profile.

[0040] The initial installation process of the grinding machine 100 for machining internal threads according to the present invention is as follows: First, the bottom of the support base 1 is installed in the preset position of the internal thread grinding machine, so that it cooperates with the slide rail on the grinding machine (not shown in the figure), ensuring that the support base 1 can drive the entire grinding wheel mechanism 100 to move smoothly along the slide rail; the sliding groove of the mounting plate 21 of the mounting bracket 2 near the support base 1 is aligned with the limiting block 12 of the support base 1, so that the mounting plate 21 slides into the top upright plate of the support base 1 along the limiting block 12; the bolt head 241 of the bolt assembly 24 is engaged in the T-shaped first adjustment groove 11 of the support base 1, the rod extends from the first adjustment groove 11 and passes through the first mounting hole 23 on the mounting plate 21, and after the washer 243 is put into the rod, the nut 242 is tightened (not tightened yet), completing the initial connection between the mounting bracket 2 and the support base 1; then the drive motor of the drive component 3 is connected. 31 is placed inside the mounting part 25 of the mounting bracket 2, and the drive motor 31 is fixed inside the mounting part 25 by locking screws; the side of the drive motor 31 near the output end is aligned with the first fixing part 42 of the connecting component 4, and the locking screws are used to lock this side of the drive motor 31 onto the first fixing part 42 to prevent displacement during operation; finally, the connecting part 41 of the connecting component 4 is attached to the mounting plate 21 of the mounting bracket 2, so that the first oblong hole 411 of the connecting part 41 corresponds to the second mounting hole 211 on the mounting plate 21; then, according to the length requirement of the workpiece to be processed, a suitable position of the second mounting hole 211 is selected, and the fixing screws are passed through the first oblong hole 411 and the corresponding second mounting hole 211 in sequence, but not tightened yet, leaving room for horizontal adjustment; finally, one end of the transmission flexible shaft 32 of the drive component 3 is connected to the drive motor 31. The output shaft is connected, and the other end passes through the circular mounting hole of the second fixing part 43 of the connecting assembly 4 and the circular mounting hole of the connecting block 441 of the fine-tuning part 44 in sequence; align the mounting block 53 of the grinding wheel bending rod 5 with the connecting block 441, and fix the two with fixing screws to ensure that the other end of the transmission flexible shaft 32 is connected to the grinding wheel 52 of the grinding wheel bending rod 5; adjust the engaging part of the connecting block 441 to cooperate with the sliding groove 431 of the second fixing part 43 so that the connecting block 441 fits against the second fixing part 43.

[0041] The vertical position adjustment of the mounting bracket 2 of the grinding machine 100 for machining internal threads of the present invention is achieved by loosening the nut 242 of the bolt assembly 24 on the mounting plate 21 and rotating the first connecting bolt 222 of the adjusting member 22 of the mounting bracket 2. By adjusting the depth of the two bolts in the threaded holes at the top of the mounting plate 21 and the height of the other two bolts above the first fixed plate 221, the mounting plate 21 and the upper components are driven to move vertically along the first adjusting groove 11 of the support seat 1. After adjusting to a position suitable for the workpiece height, the nut 242 of the bolt assembly 24 is tightened to securely lock the mounting plate 21 to the support seat 1. The horizontal position adjustment of the connecting assembly 4 is achieved by pushing the connecting assembly 4 horizontally along the mounting plate 21 according to the workpiece machining length requirements, so that the grinding wheel 52 of the grinding wheel bending member 5 is initially aligned with the workpiece to be machined area. The position of the fixing screw in the first waist-shaped hole 411 of the connecting part 41 is adjusted to ensure that the connecting assembly 4 is in a suitable horizontal position. Then, the fixing screw is tightened to complete the horizontal locking. The fine adjustment of the grinding wheel bending member 5 is to loosen the fixing screw between the second oblong hole 4411 of the connecting block 441 and the second fixing part 43, rotate the second connecting bolt 443 of the fine adjustment member 44, so that the connecting block 441 moves vertically along the sliding groove 431 of the second fixing part 43 until the grinding wheel 52 is precisely aligned with the machining trajectory of the internal thread of the workpiece; after the adjustment is completed, tighten the fixing screw in the second oblong hole 4411 to firmly lock the connecting block 441 and the second fixing part 43.

[0042] The grinding machine 100 for machining internal threads of the present invention includes: a support base 1, a mounting bracket 2 slidably disposed on the support base 1, a drive member 3 disposed on the mounting bracket 2, a connecting assembly 4, and a grinding wheel bending member 5 fixed on the connecting assembly 4; the mounting bracket 2 can be adjusted in the vertical direction by sliding on the support base 1; the drive member 3 is used to drive the grinding wheel bending member 5 to rotate; the connecting assembly 4 includes a second fixing part 43 and a fine-tuning member 44, the fine-tuning member 44 includes a connecting block 441, a second fixing plate 442, and a second connecting bolt 443, the second connecting bolt 443 passing through the first fixing part 441. Two fixing plates 442 are provided, and the other end of the second connecting bolt 443 is fixed to the connecting block 441. The position of the connecting block 441 in the vertical direction can be finely adjusted by rotating the second connecting bolt 443. The connecting block 441 has second waist-shaped holes 4411 on both sides. The second fixing part 43 has mounting holes at the corresponding positions of the second waist-shaped holes 4411. The connecting block 441 is fixed to the second fixing part 43 by passing the fixing screws through the second waist-shaped holes 4411 and the corresponding mounting holes in sequence. The grinding wheel bending rod 5 is fixed to the connecting block 441 of the fine-tuning part 44. The grinding machine 100 for machining internal threads of the present invention uses a mounting bracket 2 to achieve precise vertical adjustment through adjusting components 22 and bolt assembly 24, adapting to workpieces of different heights; the first oblong hole 411 of the connecting component 4 cooperates with the second mounting hole 211 to achieve stepless horizontal adjustment, and the fine-tuning component 44 achieves fine vertical adjustment of the grinding wheel bending rod 5 to ensure machining accuracy; the transmission flexible shaft 32 combines flexibility and strength, adapts to complex spaces and buffers impacts, extending component life; the bending shape of the grinding wheel bending rod 5 and the tilt angle of the grinding wheel 52 are adapted to internal thread machining, ensuring tooth profile accuracy; the overall structure can adapt to machining of various specifications without changing parts, reducing costs and improving efficiency and accuracy.

[0043] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0044] It should be understood that the terms "length", "width", "up", "down", "front and back", "left and right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention 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. Therefore, they should not be construed as limitations on the present invention.

[0045] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the scope of the present invention. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A grinding machine for machining internal threads, characterized in that, The assembly includes a support base, a mounting bracket slidably mounted on the support base, a drive component mounted on the mounting bracket, a connecting assembly, and a grinding wheel bending member fixed to the connecting assembly. The mounting bracket can be adjusted vertically by sliding on the support base. The drive component drives the grinding wheel bending member. The connecting assembly includes a second fixing part and a fine-tuning component. The fine-tuning component includes a connecting block, a second fixing plate, and a second connecting bolt. The second connecting bolt passes through the second fixing plate, and its other end is fixed to the connecting block. Rotating the second connecting bolt allows for fine-tuning of the connecting block's vertical position. The connecting block has second oblong holes on both sides, and mounting holes are provided at corresponding positions on the second fixing part. Fixing screws are used to sequentially pass through the second oblong holes and the corresponding mounting holes to fix the connecting block to the second fixing part. The grinding wheel bending member is fixed to the fine-tuning component. The drive component includes a drive motor and a flexible transmission shaft. One end of the flexible transmission shaft is connected to the output shaft of the drive motor, and the other end is connected to the grinding wheel bending rod. The flexible transmission shaft is a bundle of steel wires spirally wound in multiple layers. The grinding wheel bending rod includes a connecting rod, a grinding wheel disposed at one end of the connecting rod, and a mounting block disposed at the other end of the connecting rod. The mounting block is connected to the connecting block by fixing screws. A through hole is provided in the center of the connecting rod and the mounting block for the flexible transmission shaft to pass through and be installed to the grinding wheel. The grinding wheel is rotatably connected to one end of the connecting rod, and the grinding wheel and the connecting rod have a certain tilt angle. The connecting assembly also includes a connecting part and a first fixing part connected to the drive component. A first waist-shaped hole is provided on the connecting part, and multiple evenly arranged second mounting holes are provided in the horizontal direction of the mounting plate of the mounting bracket at the mounting position corresponding to the first waist-shaped hole.

2. The grinding machine for machining internal threads according to claim 1, characterized in that, The second fixing part has a sliding groove on the side near the fine-tuning part, and the connecting block has a locking part corresponding to the sliding groove on the side near the second fixing part, so that the connecting block can move vertically on one side of the second fixing part.

3. The grinding machine for machining internal threads according to claim 1, characterized in that, The first fixing part is used to fix the side of the drive motor near the output end, and locks one end of the drive motor by locking screws.

4. The grinding machine for machining internal threads according to claim 1, characterized in that, The support base is provided with a first adjustment groove, and multiple first adjustment grooves are vertically provided, with a cross-section that is approximately T-shaped.

5. The grinding machine for machining internal threads according to claim 4, characterized in that, The mounting bracket includes a mounting plate, an adjustment component disposed above the mounting plate, a first mounting hole formed on the mounting plate, a bolt assembly disposed on the mounting plate, and a mounting part.

6. The grinding machine for machining internal threads according to claim 5, characterized in that, The adjusting component includes a first fixing plate and a first connecting bolt. The first fixing plate is fixed above the support base, and the first connecting bolt passes through the first fixing plate and is fixed at the other end to the mounting plate.

7. The grinding machine for machining internal threads according to claim 5, characterized in that, The bolt assembly includes a bolt, a nut, and a washer. The head of the bolt engages in a T-shaped first adjustment groove, and the shank passes through a first mounting hole and is secured by the nut. The washer is located between the nut and the mounting plate.

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