A tool rest structure of a numerical control lathe

Abstract

The utility model relates to numerical control lathe related technical field especially, and it is a kind of numerical control lathe tool rest structure, including tool rest, one end of tool rest is provided with clamping table, the inner wall slidingly connected with eccentric wheel of clamping table, one end of eccentric wheel is fixedly connected with operating handle, in the use process, can be inserted into spring chuck by the to-be-mounted tool, ensure that tool axis is consistent with processing reference, gradually extrude spring chuck contraction with displacement, until tool is clamped tightly, the radial clamping force of tool of deformation of spring chuck is generated, only need to be installed in place according to the steps of above-mentioned tool dismounting and installation, spare tool can be installed, simultaneously, tool rest is provided with multiple sets of clamping table, clamping table can clamp multiple models of tool, owing to the effect of positioning assembly, the accurate replacement of tool can be realized quickly, guarantee the continuity of processing, greatly shorten tool changing interval time, greatly improve the processing efficiency of numerical control lathe.

Description

Technical Field

[0001] This utility model relates to the technical field of CNC lathes, and in particular to a CNC lathe tool post structure. Background Technology

[0002] As a core component for achieving automatic tool changing and precision machining, the performance of the CNC lathe tool turret directly affects the machining efficiency, accuracy, and ease of operation of the equipment. Therefore, a CNC lathe tool turret structure is particularly needed.

[0003] However, existing CNC lathe tool turrets often suffer from problems during use, such as cumbersome tool changing processes, complex operations, susceptibility to wear affecting positioning accuracy, and high maintenance costs. Especially in small machining equipment or scenarios with high requirements for tool changing speed, the traditional structure cannot meet the needs of rapid disassembly, installation, and tool replacement, thus affecting the machining efficiency of CNC lathes.

[0004] To address the aforementioned issues, a search revealed that patent CN222626219U discloses an automatic weighing machine. The patent describes a device that "uses two symmetrically fixed, one high and one low, connecting adjustment components on the top of a tool holder to combine two blades positioned one above the other on top of the tool holder. Each blade is connected to a threaded rod screwed into the interior of two translation adjustment blocks. The translation adjustment blocks move below their respective adjustment frames, changing the position of the blades above the tool holder. Simultaneously, the blades can rotate around the threaded rods above the tool holder, and the threaded rods above the blades secure them to the tool holder from above, providing an advantage..." The system allows operators to adjust the position of the two tool bodies on the tool holder and the angle of the tool head, enabling them to flexibly and conveniently adjust the state of the double-layer tool rack for various types of workpiece machining, thus improving the effectiveness of the double-layer tool rack on CNC lathes and increasing work efficiency. Although it achieves the function of adjusting the position and angle of the double-layer tool rack on the tool holder, and allows the tool body to slide along the translation adjustment frame and rotate around the axis through the combination design of the translation adjustment block and the fastening threaded rod, the tool body locking is achieved by screw connection, which makes the tool changing operation cumbersome. It requires manual tightening of multiple turns of thread, the positioning accuracy is affected by the clearance between the guide rail and the thread pair, and the structure is relatively complex, including multiple components such as the combined back plate and the translation adjustment frame.

[0005] In light of this, in-depth research into the aforementioned issues led to the creation of this case. Utility Model Content

[0006] The purpose of this utility model is to provide a CNC lathe tool post structure to solve the problems mentioned in the background art. In use, traditional CNC lathe tool posts often have problems such as cumbersome tool changing process, complicated operation, easy wear and tear affecting positioning accuracy, and high maintenance costs. Especially in small processing equipment or scenarios with high requirements for tool changing speed, the traditional structure is difficult to meet the needs of quick disassembly, installation and tool replacement, which affects the processing efficiency of CNC lathes.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a CNC lathe tool post structure, including a tool post, a clamping table at one end of the tool post, an eccentric wheel slidably connected to the inner wall of the clamping table, an operating handle fixedly connected to one end of the eccentric wheel, a locking rod abutting one side of the surface of the eccentric wheel, a pressure block abutting one end of the locking rod, a spring collet abutting the inner surface of the pressure block, a tool movably sleeved at one end of the spring collet, and a limit block slidably connected to one side of the surface of the operating handle.

[0008] Preferably, the clamping platform is connected to the bearing of the operating handle.

[0009] Preferably, the clamping platform is slidably connected to the locking rod.

[0010] Preferably, the inner surface of the pressure block is provided with an inclined structure that matches the dimensions of the outer surface of the spring collet.

[0011] Preferably, the clamping platform is slidably connected to the pressure block.

[0012] Preferably, one end of the tool holder is provided with multiple sets of positioning holes that match the size of the cylindrical positioning pins.

[0013] Preferably, the clamping platform is fitted and connected to the limiting block.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This CNC lathe tool post structure, by adopting the linkage mechanism of eccentric wheel and spring collet, can complete tool clamping / unclamping with a single rotation of the operating handle, which shortens the tool change time compared with the traditional screw connection method. The precise fit between the cylindrical positioning pin and the positioning hole and the mechanical locking of the limit block ensure the repeatability of tool change. At the same time, the integrated clamping table structure reduces the number of vulnerable parts, extends the maintenance cycle, and supports multiple sets of clamping tables to expand the tool positions, which greatly improves the machining efficiency of CNC lathe. Attached Figure Description

[0015] Figure 1 This is a side view of the appearance structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the interaction between the tool holder and the clamping table of this utility model;

[0017] Figure 3 This is a schematic diagram of the interaction between the clamping platform and the eccentric wheel in this utility model.

[0018] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0019] Figure 5 This utility model Figure 3 Enlarged structural diagram at point B.

[0020] In the diagram: 1. Tool holder; 2. Clamping table; 3. Cylindrical locating pin; 4. Eccentric wheel; 5. Operating handle; 6. Locking rod; 7. Pressure block; 8. Spring collet; 9. Tool; 10. Limit block. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5This utility model provides a technical solution: a CNC lathe tool post structure, including a tool post 1, a clamping table 2 at one end of the tool post 1, an eccentric wheel 4 slidably connected to the inner wall of the clamping table 2, an operating handle 5 fixedly connected to one end of the eccentric wheel 4, a locking rod 6 attached to one side of the surface of the eccentric wheel 4, a pressure block 7 attached to one end of the locking rod 6, a spring collet 8 attached to the inner surface of the pressure block 7, a tool 9 movably sleeved at one end of the spring collet 8, and a limit block 10 slidably connected to one side of the surface of the operating handle 5. During use... In this process, the tool 9 to be loaded can be inserted into the spring collet 8, and the tool holder 1 can be pushed to make the end positioning hole precisely engage with the cylindrical positioning pin 3 on the clamping table 2, ensuring that the axis of the tool 9 is consistent with the machining datum. The limiting block 10 on one side of the surface of the operating handle 5 can be manually slid to disengage it from the engagement groove with the clamping table 2, thus releasing the rotation restriction on the operating handle 5. The operating handle 5 can be rotated counterclockwise, at which point the handle is oriented towards the non-maximum inner diameter of the eccentric wheel 4. The operating handle 5 drives the eccentric wheel 4 to rotate, and the change in eccentricity pushes the locking rod 6 along the clamping table. The inner wall of platform 2 slides, thereby driving the pressure block 7 to move synchronously. The pressure block 7 fits against the outer side of the spring collet 8 through the inner inclined structure. With the displacement, it gradually squeezes the spring collet 8 to contract until the tool 9 is completely clamped. The deformation of the spring collet 8 generates a radial clamping force on the tool 9. When the tool 9 is removed, the sliding limit block 10 disengages from the fitting groove, releasing the fixation of the operating handle 5. Rotating the operating handle 5 clockwise drives the eccentric wheel 4 to rotate in the opposite direction. The eccentricity decreases, causing the locking rod 6 to reset under the action of the outer spring force. The pressure block 7 moves with the spring collet 8. The spring collet 8 is reset by its own elastic force, releasing the pressure on the spring collet 8. The spring collet 8 opens under its own elastic restoring force, at which point the tool 9 can be directly pulled out, completing the disassembly. If a spare tool 9 needs to be replaced, simply follow the above tool disassembly and installation steps to install the spare tool in place. At the same time, the tool holder 1 is equipped with multiple sets of clamping tables 2, which can clamp various types of tools 9. Due to the positioning component, the tool 9 can be quickly and accurately replaced, ensuring the continuity of processing and greatly shortening the tool change interval time.

[0023] Furthermore, the clamping table 2 is connected to the operating handle 5 by bearings. Through the arrangement of the clamping table 2 and the operating handle 5, the operating handle 5 can rotate around the clamping table 2 with low friction, reducing the resistance when the operating handle 5 rotates and improving the smoothness of the operation. At the same time, the bearing connection can ensure the stability of the rotation axis of the operating handle 5, avoid the reduction of the transmission accuracy of the eccentric wheel 4 due to shaking, and ensure the accuracy of the locking / unlocking action.

[0024] Furthermore, the clamping table 2 is slidably connected to the locking rod 6. By setting the clamping table 2 and the locking rod 6, the movement trajectory of the locking rod 6 can be restricted to a linear reciprocating motion, preventing it from deviating or tilting when under force, ensuring that the pushing direction of the locking rod 6 on the pressure block 7 is stable, ensuring that the spring collet 8 is subjected to uniform force, and improving the reliability of the tool 9 clamping.

[0025] Furthermore, the inner surface of the pressure block 7 is provided with an inclined structure that matches the size of the outer surface of the spring collet 8. Through the arrangement of the pressure block 7 and the spring collet 8, the pushing force of the pressure block 7 can be evenly transmitted to the spring collet 8 along the inclined surface. The clamping force is amplified by the force amplification effect of the inclined surface. At the same time, it ensures that the spring collet 8 shrinks symmetrically in the radial direction, avoids the tool 9 from being eccentric due to uneven force, and ensures the coaxiality accuracy during machining.

[0026] Furthermore, the clamping table 2 and the pressure block 7 are slidably connected. By setting the clamping table 2 and the pressure block 7, the pressure block 7 can be guided to move smoothly in a preset direction, preventing the pressure block 7 from jamming or shifting when squeezing the spring collet 8, ensuring that the locking stroke is consistent each time, improving the repeatability accuracy of clamping the tool 9, and at the same time, the sliding fit reduces the frictional resistance of the movement of the pressure block 7, extending the service life of the component.

[0027] Furthermore, one end of the tool holder 1 is provided with multiple sets of positioning holes that match the size of the cylindrical positioning pin 3. Through the setting of the tool holder 1 and the cylindrical positioning pin 3, the clamping table 2 can be quickly positioned in multiple positions on the tool holder 1, adapting to the machining radius requirements of different tools 9 and expanding the applicability of the equipment. At the same time, the precisely matched positioning holes and positioning pins can ensure the positional accuracy after each switch, avoid repeated tool setting, and shorten the tool change time.

[0028] Furthermore, the clamping table 2 and the limiting block 10 are fitted together. Through the setting of the clamping table 2 and the limiting block 10, the position of the operating handle 5 can be locked after the tool 9 is locked, preventing the operating handle 5 from rotating accidentally due to vibration during the machining process, ensuring that the spring collet 8 remains locked, and avoiding the tool 9 from loosening and causing safety accidents; at the same time, the quick separation characteristic of the fitted connection can quickly release the lock when changing tools, improving operating efficiency.

[0029] Working principle: During use, the tool 9 to be installed can be inserted into the spring collet 8, and the tool holder 1 can be pushed to make the end positioning hole precisely engage with the cylindrical positioning pin 3 on the clamping table 2, ensuring that the axis of the tool 9 is consistent with the machining datum. The limiting block 10 on one side of the surface of the operating handle 5 can be manually slid to disengage it from the engagement groove of the clamping table 2, releasing the rotation restriction on the operating handle 5. The operating handle 5 can be rotated counterclockwise, at which point the handle is oriented towards the non-maximum inner diameter of the eccentric wheel 4. The operating handle 5 drives the eccentric wheel 4 to rotate, and the change in eccentricity pushes the locking rod 6 to slide along the inner wall of the clamping table 2, thereby driving the pressure block 7 to move synchronously. The pressure block 7 fits against the outer side of the spring collet 8 through the inner inclined structure, and gradually squeezes the spring collet 8 to contract with the displacement until the tool 9 is completely clamped. The deformation of the spring collet 8 generates a radial clamping force on the tool 9. Disassembly When tool 9 is in use, sliding limit block 10 disengages from the fitting groove, releasing the fixation on operating handle 5. Rotating operating handle 5 clockwise causes eccentric wheel 4 to rotate in the opposite direction, reducing the eccentricity and causing locking rod 6 to reset under the action of outer spring force. Pressure block 7 resets under the action of spring collet 8's own elastic force, releasing the pressure on spring collet 8. Spring collet 8 opens under its own elastic restoring force, at which point tool 9 can be directly pulled out, completing disassembly. If a spare tool 9 needs to be replaced, simply follow the above tool disassembly and installation steps to install the spare tool in place. At the same time, tool holder 1 is equipped with multiple sets of clamping tables 2, which can clamp various types of tools 9. Due to the positioning component, tool 9 can be quickly and accurately replaced, ensuring the continuity of processing, greatly shortening the tool change interval time, and greatly improving the processing efficiency of CNC lathe.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A CNC lathe tool post structure, comprising a tool post (1), characterized in that: One end of the tool holder (1) is provided with a clamping platform (2), and an eccentric wheel (4) is slidably connected to the inner wall of the clamping platform (2). One end of the eccentric wheel (4) is fixedly connected to an operating handle (5). A locking rod (6) is attached to one side of the surface of the eccentric wheel (4), and a pressure block (7) is attached to one end of the locking rod (6). A spring collet (8) is attached to the inner surface of the pressure block (7), and a tool (9) is movably sleeved on one end of the spring collet (8). A limit block (10) is slidably connected to one side of the surface of the operating handle (5).

2. The CNC lathe tool post structure according to claim 1, characterized in that: The clamping table (2) is connected to the operating handle (5) by a bearing.

3. The CNC lathe tool post structure according to claim 1, characterized in that: The clamping platform (2) is slidably connected to the locking rod (6).

4. The CNC lathe tool post structure according to claim 1, characterized in that: The inner surface of the pressure block (7) is provided with an inclined structure that matches the size of the outer surface of the spring clip (8).

5. The CNC lathe tool post structure according to claim 1, characterized in that: The clamping platform (2) is slidably connected to the pressure block (7).

6. The CNC lathe tool post structure according to claim 1, characterized in that: One end of the tool holder (1) is provided with multiple sets of positioning holes that match the size of the cylindrical positioning pin (3).

7. The CNC lathe tool post structure according to claim 1, characterized in that: The clamping platform (2) is fitted and connected to the limiting block (10).

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