Key groove milling tool with angular relationship between shaft key groove and flat position

Abstract

The key groove milling tool is provided with a V-shaped block, a check block is installed at one end of a V-shaped sinking groove of the V-shaped block, and a flat position positioning block is installed at the other end of the V-shaped sinking groove of the V-shaped block. Axial positioning screws are rotationally mounted on the stop blocks, and the axial positioning screws abut against the shaft end faces of the shaft parts to be used for axial positioning of the shaft parts with different lengths; the upper end face of the flat position positioning block is provided with a flat position positioning inclined face, the inclination angle alpha of the flat position positioning inclined face is equal to the included angle between a shaft part key groove and a flat position, and the flat position positioning inclined face makes contact with and is attached to the flat position of the shaft part. The V-shaped block is provided with a pressing plate, and the pressing plate downwards presses the shaft part and tightly presses and fixes the shaft part on the V-shaped block. The utility model solves the technical problem that the machining efficiency is low when a three-axis machining center is used for machining a shaft key slot and a milling key slot with an angular relationship between a flat position, and has the advantages of simple and compact structure, economy, practicability, convenience in clamping, reduction of the machining difficulty, improvement of the machining efficiency and high universality.

Description

Technical Field

[0001] This utility model belongs to the technical field of tooling fixtures for workpiece milling, specifically relating to a tooling fixture for milling keyways with an angular relationship between the keyway and the flat part of a shaft. Background Technology

[0002] In the field of mechanical manufacturing, shaft parts are indispensable and important components in various mechanical equipment, widely used in many industries such as automobiles, aerospace, shipbuilding, and machine tools. Keyways, as a key feature of shaft parts, play a vital role in transmitting torque, positioning, and ensuring connection reliability.

[0003] (like Figure 1 When machining shaft parts 6 (shown) with a positional relationship between keyway 601 and flat section 602, the following two methods are generally used: 1. Machining using a four-axis machining center; 2. Machining using a three-axis machining center with an indexing head for alignment. In most manufacturing enterprises, four-axis machining centers are relatively few, with three-axis machining centers being the most common. However, machining with a three-axis machining center requires not only installing an indexing head but also setting the tool for each shaft part, resulting in low machining efficiency. Therefore, the following technical solution is proposed. Utility Model Content

[0004] The technical problem solved by this utility model is to provide a milling keyway fixture for keyways with an angular relationship between the keyway and the flat part of a shaft, thereby solving the technical problem of low machining efficiency when using a three-axis machining center to mill keyways with an angular relationship between the keyway and the flat part of a shaft.

[0005] The technical solution adopted in this utility model is as follows: A keyway milling fixture with an angular relationship between the keyway and the flat part of a shaft has a V-block. A stop block is installed at one end of the V-shaped groove of the V-block, and a flat part positioning block is installed at the other end. An axial positioning screw is installed on the stop block by rotation. The axial positioning screw is tightened against the end face of the shaft part for axial positioning of shaft parts of different lengths. A flat part positioning inclined surface is formed on the upper end face of the flat part positioning block. The inclination angle α of the flat part positioning inclined surface is equal to the angle between the keyway and the flat part of the shaft part, and the flat part positioning inclined surface contacts and fits the flat part of the shaft part. A pressure plate is installed on the V-block. The pressure plate presses down on the shaft part and presses and fixes the shaft part to the V-block.

[0006] In the above technical solution, the V-block has two axisymmetric V-shaped grooves, which are used to install two shaft parts side by side, and the two shaft parts are clamped together by a pressure plate.

[0007] In the above technical solution, the preferred method is to use a U-shaped groove to fasten the pressure plate and the V-block together by screwing the pressure plate screws and washers into the threaded holes of the V-block.

[0008] In the above technical solution, the stop block is further secured to the top of the V-block using a pair of axisymmetric stop block set screws, and an axial positioning screw is installed at the center of the stop block.

[0009] In the above technical solution, the preferred embodiment is as follows: the bottom end of the V-shaped block mounting flat positioning block is provided with a block base, the block base is provided with a through base pin hole, a guide pin is concentrically installed in the base pin hole, the guide pin is concentrically connected to the positioning block pin hole provided in the flat positioning block, the bottom end of the flat positioning block is provided with a countersunk groove, a spring is installed between the countersunk groove and the upper end face of the block base; the bottom end of the flat positioning block is also provided with a positioning block threaded hole, the block base is provided with a stepped through hole, the stepped through hole and the positioning block threaded hole are concentrically set, and the positioning block adjusting screw passes through the stepped through hole and screws into the positioning block threaded hole to adjust the height of the flat positioning block.

[0010] In the above technical solution, the V-shaped groove is further provided with a shoulder groove, which is adapted to fit the shoulder of the shaft part to ensure the levelness of the shaft part.

[0011] Advantages of this utility model compared to the prior art:

[0012] 1. When clamping, the tangential force generated by the pressure plate during the clamping process of this utility model acts on the shaft part, causing the shaft part to rotate autonomously in the V-shaped groove until the flat part of the shaft part rotates to fully fit the flat positioning inclined surface of the flat positioning block, thus automatically completing the circumferential alignment of the shaft part. The clamping is convenient and does not require the use of an indexing head for alignment, which can greatly reduce the processing difficulty and improve the processing efficiency.

[0013] 2. The stop block of this utility model works in conjunction with the axial positioning screw to ensure the axial positioning of shaft parts; the flat positioning block, spring, guide pin, and positioning block adjusting screw work together to ensure the angular positional relationship between the keyway and the flat part of the shaft parts; the pressure plate, pressure plate screw, and washer work together to ensure that the workpiece is pressed and to prevent workpiece displacement; this utility model realizes the axial and circumferential positioning of shaft parts, the tooling structure is simple and compact, small in size, easy to implement, economical and practical.

[0014] 3. This utility model achieves adaptive positioning and clamping of shaft parts with different keyways and flat angles by replacing the flat positioning blocks with different α tilt angles; it also achieves adaptive positioning and clamping of shaft parts with different diameters by rotating the adjusting screw of the adjusting positioning block; and it achieves axial adaptive positioning and clamping of shaft parts with different axial lengths by rotating the extension length of the axial positioning screw, thus having strong universality.

[0015] 4. The V-shaped block of this utility model enables self-centering of shaft parts, and the flat positioning block enables quick and simple positioning of the relative position of the flat part and the keyway of the shaft part. This avoids the problem of the bottom of the keyway not being parallel to the cylindrical diameter of the shaft part due to the eccentricity of the flat part center when machining such products. It can simultaneously achieve axial and circumferential positioning of shaft parts, and can quickly position the keyway of shaft parts with flat parts and angular relationship requirements with the flat parts. When machining such products, it saves the operator the time of aligning the workpiece angle and improves the machining efficiency. Attached Figure Description

[0016] Figure 1 This is the front view of a shaft-type part where the keyway and the flat section have a positional relationship.

[0017] Figure 2 This is a front view of the tooling of this utility model for removing the pressure plate;

[0018] Figure 3 This is a top view of the tooling of this utility model;

[0019] Figure 4 This is a perspective view of the V-shaped block in the tooling of this utility model;

[0020] Figure 5 This is a perspective view of the flat positioning block in the tooling of this utility model;

[0021] Figure 6 This is a perspective view of the pressure plate in the tooling of this utility model;

[0022] In the diagram: 1-Guide pin, 2-Locking block adjusting screw, 3-Spring, 4-Flat positioning block, 401-Flat positioning inclined surface, 402-Locking block pin hole, 403-Counterpart, 404-Locking block threaded hole, 5-V-block, 501-V-counterpart, 5011-Shoulder countersunk, 502-Block base, 503-Base pin hole, 504-Step through hole, 505-V-block threaded hole, 6-Shaft parts, 601-Keyway, 602-Flat, 603-Shoulder, 7-Washer, 8-Pressure plate screw, 9-Pressure plate, 901-U-groove, 10-Axial positioning screw, 11-Stop set screw, 12-Stop. Detailed Implementation

[0023] The following will refer to the appendix in the embodiments of this utility model. Figure 1-6 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and 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.

[0024] A tooling for milling keyways with an angular relationship between the keyway and the flat section of a shaft (e.g.) Figure 2 , Figure 3 As shown, it has a V-block 5. The V-shaped groove 501 of the V-block 5 has good centering, which can make the positioning reference axis of the workpiece aligned on the plane of symmetry of the two inclined surfaces of the V-block, and there will be no offset in the left and right directions.

[0025] The V-shaped groove 501 of the V-block 5 has a stop block 12 installed at one end and a flat positioning block 4 installed at the other end. The stop block 12 is rotatably mounted with an axial positioning screw 10, which tightens against the end face of the shaft part 6 for axial positioning of shaft parts 6 of different lengths. The combined use of the stop block 12 and the axial positioning screw 10 enables precise axial positioning of shaft parts of different lengths. The axial positioning screw 10 tightens against the end face of the shaft part 6 to prevent axial movement of the workpiece during milling, thus improving machining accuracy.

[0026] The upper end face of the flat positioning block 4 is provided with a flat positioning inclined surface 401, and the inclination angle α of the flat positioning inclined surface 401 is (in combination with) Figure 5 The angle between the keyway 601 and the flat section 602 of the shaft part is equal to the angle between them. Figure 1 ), and the flat positioning inclined surface 401 contacts and adheres to the flat part 602 of the suitable shaft-type part 6 (e.g. Figure 2 ).

[0027] Among them, the inclined surface 401 on the upper end of the flat positioning block 4 has an inclination angle α that is equal to the angle between the keyway 601 and the flat part 602 of the shaft part 6, ensuring that the flat part can be accurately positioned. The inclined surface 401 of the flat positioning block 4 contacts and fits properly with the flat part 602 of the shaft part 6, further improving the accuracy and stability of the positioning.

[0028] The V-block 5 is mounted on the pressure plate 9 (as shown in the image). Figure 3 The pressure plate 9 presses down on the shaft part 6 and presses and fixes the shaft part 6 to the V-shaped groove 501 of the V-shaped block 5.

[0029] The pressure plate 9 presses down on the shaft-like part 6 and clamps it firmly into the V-shaped groove 501 of the V-block 5, thus achieving a secure clamping of the workpiece. The design of the pressure plate 9 makes the clamping operation simpler and faster, improving work efficiency.

[0030] Therefore, this utility model fixture can adapt to shaft parts 6 of different lengths and sizes, and has strong versatility and adaptability. By adjusting the stop block 12, axial positioning screw 10 and flat positioning block 4, precise positioning and clamping of workpieces of different specifications can be achieved. In addition, through precise positioning and clamping, this utility model fixture ensures the stability and accuracy of the shaft parts 6 during the milling process, thereby improving the machining accuracy and avoiding machining errors and scrap rates caused by improper clamping of the shaft parts 6.

[0031] In the above embodiments, further: (e.g.) Figure 3 The V-block 5 has two axisymmetric V-shaped grooves 501, which are used to install two shaft parts 6 side by side. The two shaft parts 6 are pressed together by a pressure plate 9.

[0032] Because the V-block 5 features two axisymmetric V-shaped grooves 501, two shaft-like parts 6 can be installed side-by-side simultaneously. This means that two workpieces can be processed in a single clamping operation, significantly improving production efficiency. Using a single clamping plate 9 to simultaneously clamp the two shaft-like parts 6 reduces the number of clamping operations and time, helping to shorten the processing cycle and improve overall production efficiency. Using a single clamping plate 9 to simultaneously clamp the two shaft-like parts 6 ensures that both workpieces are subjected to the same clamping force, helping to guarantee the consistency of machining accuracy and surface quality. Installing two shaft-like parts 6 side-by-side and clamping them with a single clamping plate 9 reduces the number and cost of tooling fixtures; simultaneously, due to increased production efficiency, it also reduces the processing cost per unit product. The dual-axisymmetric design allows the two shaft-like parts 6 to be installed compactly side-by-side, saving processing space, which is particularly important in space-constrained processing environments. The operation process of installing two shaft-like parts 6 side-by-side and clamping them with a single clamping plate 9 is relatively simple and straightforward, helping to reduce operational errors and improve work efficiency.

[0033] In the above embodiments, preferably: the pressure plate 9 passes through a U-shaped groove 901 (e.g., Figure 6 Using pressure plate screws 8 and washers 7, the pressure plate 9 and V-block 5 are fastened together by engaging the threaded hole 505 of the V-block. Figure 2 , Figure 3 ).

[0034] The design of the U-shaped groove 901 allows the pressure plate 9 to be more securely connected to the V-block 5. The engagement of the pressure plate screw 8 and the washer 7 ensures a tight fit between the pressure plate 9 and the V-block 5. The washer 7 also prevents the pressure plate screw 8 from loosening, further enhancing the reliability of the connection. The threaded hole 505 on the V-block 5 matches the pressure plate screw 8, making the connection more precise and stable. The design of the U-shaped groove 901 and the threaded hole 505 on the V-block allows the pressure plate 9 to be easily installed on the V-block 5 without complicated operating procedures.

[0035] In the above embodiment, the stop block 12 is further fastened to the top of the V-block 5 using a pair of axisymmetric stop block set screws 11; the axial positioning screw 10 is installed at the center of the stop block 12.

[0036] The stop block 12 is securely mounted to the top of the V-block 5 using a pair of axisymmetric set screws 11. This design ensures that the stop block 12 maintains a stable position after installation, preventing displacement or loosening. The set screws 11, as fastening elements, provide sufficient tightening force to ensure a firm and reliable connection between the stop block 12 and the V-block 5. The set screws 11 and the axial positioning screws 10 facilitate the installation and adjustment of the stop block 12, eliminating the need for complex procedures and saving installation time.

[0037] In the above embodiments, the preferred embodiment is: (e.g.) Figure 4 The bottom end of the V-shaped block 5, on which the flat positioning block 4 is mounted, is provided with a block base 502. The block base 502 is used to increase the overall stability of the tooling. The block base 502 is provided with a through base pin hole 503 (e.g., Figure 2 The base pin hole 503 is concentrically mounted with the guide pin 1, and the guide pin 1 is concentrically connected to the positioning block pin hole 402 made of the flat positioning block 4.

[0038] The base 502 has a through-hole 503 for mounting the guide pin 1. This design makes the tooling structure more compact and reduces unnecessary space occupation. The guide pin 1 is concentrically connected to the positioning pin hole 402 of the flat positioning block 4. This fit ensures the positional accuracy of the flat positioning block 4 during installation and prevents it from shifting or shaking. The design of the guide pin 1 also enables the flat positioning block 4 to maintain a stable movement trajectory during adjustment, further improving positioning accuracy.

[0039] The bottom end of the flat positioning block 4 is provided with a recess 403, and a spring 3 is installed between the recess 403 and the upper surface of the block base 502.

[0040] The spring 3 installed between the sink 403 and the upper surface of the block base 502 can play a buffering role, reducing the impact of the impact force generated during workpiece clamping or processing on the positioning accuracy.

[0041] The bottom end of the flat positioning block 4 is also provided with a positioning block threaded hole 404, and the block base 502 is provided with a stepped through hole 504. The stepped through hole 504 and the positioning block threaded hole 404 are concentrically arranged. The positioning block adjusting screw 2 passes through the stepped through hole 504 and then engages the positioning block threaded hole 404 to adjust the height of the flat positioning block 4.

[0042] This adjustment method allows the tooling to adapt to workpieces of different sizes and shapes, improving its versatility and flexibility. The concentric arrangement of the guide pin 1, the stepped through hole 504, and the threaded hole 404 of the positioning block ensures the stability of the positioning block adjusting screw 2 during the adjustment process, preventing it from tilting or shifting.

[0043] Furthermore, the guide pin 1, spring 3, positioning block adjusting screw 2, stop block set screw 11, washer 7, and pressure plate screw 8 used in the tooling are all standardized components, making them easy to procure and replace. This design reduces the maintenance cost of the tooling and improves work efficiency. The structural design of the tooling makes it easy to disassemble and assemble the various components, facilitating subsequent maintenance and repair work.

[0044] In the above embodiments, further: (e.g.) Figure 3 As shown, the V-shaped groove 501 has a shoulder groove 5011, which is adapted to fit the shoulder 603 of the shaft part 6 to ensure the levelness of the shaft part 6.

[0045] This embodiment is specifically designed to fit the shoulder 603 of the shaft part 6. This precise fit ensures that the shaft part 6 remains horizontally and accurately positioned during installation.

[0046] The working principle of this utility model includes the following steps:

[0047] Step S1: Before clamping, adjust the height of the flat positioning block 4 by adjusting the positioning block adjusting screw 2, so that the flat positioning inclined surface 401 of the flat positioning block 4 is higher than the axis height of the shaft part 6 and ensures the levelness of the shaft part 6.

[0048] The fine-tuning function of the locating block adjusting screw 2 allows for precise control of the height of the flat locating block 4. This precise adjustment ensures the relative position of the flat locating inclined surface 401 and the axis of the shaft part 6, thereby improving clamping accuracy. After the height of the flat locating block 4 is adjusted, its stability is enhanced, maintaining the stable position of the shaft part 6 during subsequent processing and preventing displacement due to vibration or impact. By adjusting the height of the flat locating block 4, this fixture can adapt to shaft parts 6 of different diameters and shapes. This flexibility gives the fixture a wider range of applications and improves its versatility. Because the fixture can adapt to shaft parts of different sizes, there is no need to change the fixture or make complex adjustments when changing parts of different sizes. This helps reduce changeover time and improve production efficiency.

[0049] Step S2: Place the shaft part 6 into the V-shaped groove 501.

[0050] Step S3: Use the stop block set screw 11 to fasten the stop block 12 to the top of the V-block 5. By adjusting the length of the axial positioning screw 10, the axial positioning of the shaft part 6 can be achieved.

[0051] Step S4: During clamping, use the pressure plate screw 8 to pass through the U-shaped groove 901 and screw it into the V-shaped block threaded hole 505 so that the pressure plate 9 presses down on the shaft part 6, so that the flat part 602 of the shaft part 6 is in partial contact with the flat positioning slope 401 of the flat positioning block 4. Continue to rotate the pressure plate screw 8 to gradually press down the pressure plate 9. The tangential force generated by the pressure plate 9 acts on the shaft part 6, causing the shaft part 6 to rotate autonomously in the V-shaped groove 501 until the flat part 602 of the shaft part 6 rotates to fully fit the flat positioning slope 401 of the flat positioning block 4, and the circumferential alignment of the shaft part 6 is automatically completed.

[0052] During the process of gradually pressing down the pressure plate 9 by rotating the pressure plate screw 8, the tangential force generated by the pressure plate 9 acts on the shaft part 6, causing the shaft part 6 to rotate autonomously. This autonomous rotation characteristic allows the shaft part 6 to automatically adjust its position until the flat part 602 of the shaft part 6 is completely in contact with the flat positioning inclined surface 401 of the flat positioning block 4, thereby achieving automatic circumferential alignment of the shaft part 6. This process requires no manual intervention, greatly improving the efficiency and accuracy of clamping. The automated alignment process reduces the time for manual adjustment and verification, making the entire clamping process more efficient, helping to increase the overall capacity of the production line and reduce production costs. Through the tight contact between the flat positioning block 4 and the flat part 602 of the shaft part 6, precise circumferential positioning is achieved. This positioning method ensures the positional accuracy of the shaft part 6 during processing and improves the processing quality.

[0053] Step S5: Continue to rotate the pressure plate screw 8 to make the pressure plate 9 continue to press down until the shaft part 6 and the V-shaped groove 501 are tightly fitted together. The shaft part 6 is pressed and fixed in the V-shaped groove 501 of the V-block 5, completing the positioning and clamping of the shaft part 6.

[0054] The tight fit between the generatrix of shaft part 6 and the V-shaped groove 501 ensures the centering accuracy of the part during clamping. This clamping method is simple to operate; the worker only needs to continue turning the pressure plate screw 8 to complete the clamping process, reducing operational difficulty and improving worker efficiency and operational guidance. Precise clamping and positioning reduce adjustment time during machining, improving production efficiency. Precise clamping and positioning help reduce machining errors, improve machining quality, reduce scrap and rework rates, and lower production costs. Tight clamping and positioning help prevent shaft parts from falling off or shifting during machining, thereby reducing the risk of safety accidents.

[0055] Specifically, by replacing the flat positioning block 4 of the flat positioning inclined surface 401 with different α tilt angles, adaptive positioning and clamping of shaft parts 6 with different keyways 601 and flat positions 602 can be achieved; by rotating the adjusting screw 2 of the adjusting positioning block to adjust the height of the flat positioning block 4, adaptive positioning and clamping of shaft parts 6 with different diameters can be achieved; by rotating the adjusting screw 10 to adjust the extension length, axial adaptive positioning and clamping of shaft parts 6 with different axial lengths can be achieved.

[0056] Therefore, by replacing the flat positioning inclined surface 401 with different α tilt angles, the included angles between different keyways 601 and flat surfaces 602 on the shaft part 6 can be precisely matched. This flexibility ensures that the tooling can adapt to shaft parts with various design requirements, greatly expanding its application range. Whether by replacing the flat positioning block 4, adjusting the height of the flat positioning block 4, or adjusting the axial positioning screw 10, high-precision positioning of the shaft part 6 can be achieved. This precise positioning helps reduce errors during processing, improves processing quality, and enhances product consistency. The tooling adjustment process is intuitive and easy to operate; workers can learn to use it without complex training, simplifying the operation process and reducing the skill requirements for workers. The versatility and flexibility of the tooling reduce reliance on tooling of different sizes, lowering inventory costs and the frequency of tooling changes. Simultaneously, by reducing adjustment time and scrap rate, it also indirectly reduces production costs.

[0057] As can be seen from the above description, when the present invention is clamped, the tangential force generated by the pressure plate 9 during the clamping process acts on the shaft part 6, causing the shaft part 6 to rotate autonomously in the V-shaped groove 501 until the flat part 602 of the shaft part 6 rotates to fully fit the flat positioning inclined surface 401 of the flat positioning block 4, and automatically completes the circumferential alignment of the shaft part 6. The clamping is convenient, and there is no need to use an indexing head for alignment, which can greatly reduce the processing difficulty and improve the processing efficiency.

[0058] The stop block 12 of this utility model works in conjunction with the axial positioning screw 10 to ensure the axial positioning of the shaft part 6; the flat positioning block 4, spring 3, guide pin 1, and positioning block adjusting screw 2 work together to ensure the angular positional relationship between the keyway 601 and the flat part 602 of the shaft part 6; the pressure plate 9, pressure plate screw 8, and washer 7 work together to ensure that the workpiece is pressed tightly to prevent workpiece displacement; this utility model realizes the axial and circumferential positioning of the shaft part 6, and the tooling structure is simple and compact, small in size, easy to implement, economical and practical.

[0059] This invention achieves adaptive positioning and clamping of shaft parts 6 with different keyways 601 and flat sections 602 by replacing the flat positioning blocks 4 of the flat positioning inclined surface 401 with different α tilt angles; it also achieves adaptive positioning and clamping of shaft parts 6 with different diameters by rotating the adjusting screw 2 of the adjusting positioning block to adjust the height of the flat positioning block 4; and it achieves axial adaptive positioning and clamping of shaft parts 6 with different axial lengths by rotating the extension length of the axial positioning screw 10, thus demonstrating strong universality.

[0060] This utility model's V-block 5 enables self-centering of shaft-type parts 6, and the flat positioning block 4 enables quick and simple positioning of the relative positions of the flat part 602 and the keyway 601 of the shaft-type parts 6. This avoids the problem of the bottom of the keyway 601 not being parallel to the cylindrical diameter of the shaft-type parts 6 caused by the eccentricity of the flat part 602 when machining such products. It can simultaneously achieve axial and circumferential positioning of shaft-type parts, and can quickly position the keyway 601 of shaft-type parts 6 that have a flat part 602 and an angular relationship with the flat part 602. When machining such products, it saves the operator the time of finding the workpiece angle and improves machining efficiency.

[0061] In summary, this utility model solves the technical problem of low machining efficiency when using a three-axis machining center to machine keyways and flat sections with an angular relationship. It has a simple and compact structure, is economical and practical, easy to clamp, reduces machining difficulty, improves machining efficiency, has strong versatility, and is suitable for widespread application.

[0062] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model. Any modifications and equivalent substitutions made within the spirit and principles of the present utility model are included within the scope of protection of the present utility model.

Claims

1. A milling fixture for keyways with an angular relationship between the keyway and the flat section of a shaft, characterized in that: The device has a V-block (5), with a stop block (12) installed at one end of the V-shaped groove (501) and a flat positioning block (4) installed at the other end; the stop block (12) is rotated to install an axial positioning screw (10), which is used to axially position shafts (6) of different lengths; the flat positioning block (4) has a flat positioning inclined surface (401) on its upper end surface, the inclination angle α of which is equal to the angle between the keyway (601) and the flat part (602) of the shaft part (6), and the flat positioning inclined surface (401) contacts and fits the flat part (602) of the shaft part (6); the V-block (5) is fitted with a pressure plate (9), which presses down on the shaft part (6) and presses and fixes the shaft part (6) to the V-block (5).

2. The tooling according to claim 1, characterized in that: The V-block (5) has two axisymmetric V-shaped grooves (501), which are used to install two shaft parts (6) side by side, and the two shaft parts (6) are pressed together by a pressure plate (9).

3. The tooling according to claim 1 or 2, characterized in that: The pressure plate (9) is fastened to the V-block (5) by means of a U-shaped groove (901) and pressure plate screws (8) and washers (7) engaging the threaded holes (505) of the V-block.

4. The tooling according to claim 1, characterized in that: The stop (12) is fastened to the top of the V-block (5) using a pair of axisymmetric stop set screws (11); the axial positioning screw (10) is installed at the center of the stop (12).

5. The tooling according to claim 1, characterized in that: The bottom end of the V-shaped block (5) on which the flat positioning block (4) is mounted has a block base (502). The block base (502) has a through base pin hole (503). The base pin hole (503) is concentrically mounted with a guide pin (1). The guide pin (1) is concentrically connected to the positioning block pin hole (402) of the flat positioning block (4). The bottom end of the flat positioning block (4) has a recess (403). The recess (403) is connected to the block. A spring (3) is installed between the upper surfaces of the body base (502); the bottom end of the flat positioning block (4) is also provided with a positioning block threaded hole (404), the block base (502) is provided with a stepped through hole (504), the stepped through hole (504) and the positioning block threaded hole (404) are concentrically arranged, and the positioning block adjusting screw (2) passes through the stepped through hole (504) and then screws into the positioning block threaded hole (404) to adjust the height of the flat positioning block (4).

6. The tooling according to claim 1 or 2, characterized in that: The V-shaped groove (501) has a shoulder groove (5011) which is adapted to fit the shoulder (603) of the shaft part (6) to ensure the levelness of the shaft part (6).

Images