A clamping device and its usage method for CNC side milling and top milling of planes.

Abstract

This invention relates to the field of clamping equipment, specifically to a clamping device for CNC side-milling and top-milling plane machining, comprising a clamping table, a meshing adjustment module, and a clamping module. The meshing adjustment module is located on one side of the clamping table, and the clamping module is located on the other side of the clamping table. The clamping table includes a clamping table body, an adjustment cavity, and limiting racks. The adjustment cavity is located on one side of the clamping table body, and two sets of limiting racks are respectively located on the upper ends of both sides of the inner wall of the adjustment cavity. This invention achieves coarse positioning of the clamping body through the cooperation of the clamping table and the meshing adjustment module, and completes subsequent fine clamping adjustments with the clamping module. It constructs a layered adjustment side-top clamping structure, eliminating the traditional method of simultaneously adjusting the overall position and clamping components of the clamp, effectively avoiding deviation problems caused by repeated adjustments, greatly simplifying the clamping operation process, significantly improving clamping efficiency, and adapting to the needs of batch production.

Description

Technical Field

[0001] This invention relates to the field of clamping equipment, and specifically to a clamping device and method for CNC milling side-top milling plane machining. Background Technology

[0002] In CNC milling, side-top clamping is a common process for machining smooth surfaces. The core technical requirements of this clamping method are to ensure clamping rigidity, achieve uniform force on the workpiece, and avoid interference between clamping components and machining mechanisms and workpieces. In batch processing scenarios, the requirements for clamping efficiency are further increased, and special fixtures with convenient adjustment and fixing capabilities are required.

[0003] Existing side-top clamping fixtures lack a layered adjustment structure design in actual operation, requiring repeated synchronous adjustments of the overall position of the fixture and clamping components. This operation is cumbersome and prone to adjustment deviations, making it difficult to stably guarantee the rigidity and uniformity of the clamping force. Furthermore, repeated adjustments can easily cause interference problems, affecting machining accuracy and significantly reducing clamping efficiency. Therefore, a clamping device and its usage method for CNC side-top milling plane machining are proposed. Summary of the Invention

[0004] In order to solve the technical problems existing in the prior art, the present invention provides a clamping device and a method for using CNC milling side top milling plane machining.

[0005] The present invention provides the following technical solution: a clamping device for CNC side milling and top milling of a plane, comprising a clamping table, a meshing adjustment module and a clamping module, wherein the meshing adjustment module is provided on one side of the inside of the clamping table and the clamping module is provided on the other side of the inside of the clamping table;

[0006] The clamping table includes a clamping table body, an adjusting cavity, and a limiting rack. The adjusting cavity is located on one side of the clamping table body, and the two sets of limiting racks are respectively located on the upper ends of the inner walls of the adjusting cavity.

[0007] Preferably, the adjusting cavity extends through the clamping table body, the meshing adjusting module is disposed inside the adjusting cavity, and the thickness of the limiting rack is consistent with half the height of the adjusting cavity.

[0008] Preferably, the meshing adjustment module includes a meshing block, a pre-embedded block, and a fixing bolt. The meshing block is disposed inside the adjustment cavity, and both sides of the meshing block mesh with the limiting racks on both sides of the inner wall of the adjustment cavity. The pre-embedded block is disposed below the meshing block and is used to fix it inside the operating table. Threaded holes are opened at the center positions of both the meshing block and the pre-embedded block. The fixing bolt is threaded into the threaded holes, and the meshing block and the pre-embedded block are fixed by the fixing bolt.

[0009] Preferably, the meshing adjustment module further includes an upward limiting assembly. Two sets of upward limiting assemblies are respectively disposed on both sides of the meshing block. The upward limiting assembly includes a limiting rod groove, a connecting hole, a movable rod, a return spring, and a limiting rod. The two limiting rod grooves are longitudinally opened on the upper part of one side of the meshing block, and the connecting hole is transversely opened on the upper part of one side of the meshing block. The connecting hole communicates with the limiting rod groove. The movable rod is sleeved inside the connecting hole, and the return spring is sleeved outside the movable rod. The two ends of the return spring are respectively connected to the movable rod and the outer wall of the meshing block. The limiting rod is sleeved inside the limiting rod groove.

[0010] Preferably, the inner wall of the adjusting cavity is provided with vertical grooves on both the front and rear sides for matching the limiting rod. The two ends of the limiting rod are respectively sleeved in the two sets of vertical grooves, and the two ends of the limiting rod abut against the inner wall of the two sets of vertical grooves respectively. The height of the vertical groove is longer than the thickness of the limiting rack.

[0011] Preferably, the limiting rod has a plurality of slots on the side facing the movable rod. The number of slots is the same as the number of teeth of the limiting rack, and the position of the slots corresponds to the center position of each tooth. The edges of each set of slots are chamfered.

[0012] Preferably, the outer wall surface of the meshing block facing the limiting rack is formed with two sets of teeth for meshing with the limiting rack, and the connecting hole is opened at the center of the two sets of teeth.

[0013] Preferably, the clamping module includes a clamping rod through hole, a clamping rod, and a fine adjustment knob. The clamping rod through hole is located at the center of the other side of the clamping platform body and communicates with the adjustment cavity. The clamping rod is sleeved inside the clamping rod through hole. A threaded hole communicating with the clamping rod through hole is located at the center of the top of the other side of the clamping platform body. The fine adjustment knob is threaded into the threaded hole.

[0014] Preferably, the bottom end of the fine adjustment knob abuts against the end of the clamping rod, and the ends of the clamping rod and the fine adjustment knob that are in contact with each other are both hemispherical.

[0015] A method for using a clamping device for CNC side milling and top milling of a plane includes the following steps:

[0016] Step S1: Pre-fix the embedded block at the designated machining position on the CNC milling machine's operating table, place the meshing block above the embedded block, align the threaded holes at their centers, screw the fixing bolts into the threaded holes and lock them in place, keeping the meshing block and the embedded block relatively fixed, and fit the adjusting cavity of the clamping table body onto the outside of the meshing block, so that the two ends of the limiting rod fit into the vertical grooves on the front and rear sides of the inner wall of the adjusting cavity, while allowing the limiting rack on the inner wall of the adjusting cavity to initially mesh with the teeth on the outer wall of the meshing block, thus completing the initial assembly and setup of the clamping table body.

[0017] Step S2: Pull the clamping table body upwards. The vertical groove on the inner wall of the adjusting cavity forms a sliding fit with the limiting rod until the clamping table body reaches the maximum upward pull height. At this time, the limiting rack and the teeth on the outer wall of the meshing block are completely disengaged.

[0018] Step S3: Keep the clamping table body in the upward state and move the clamping table body laterally along the outside of the meshing block. During the movement, the movable rod repeatedly inserts into and exits the slot on the limit rod under the action of the return spring. The operator judges the position based on the touch until the clamping table body is moved to the target position required for processing and the movable rod is stably inserted into the slot at the corresponding position of the limit rod.

[0019] Step S4: Loosen the main body of the clamping table and slowly lower it so that the limiting racks on both sides of the inner wall of the adjusting cavity precisely mesh with the teeth on the outer wall of the meshing block, thus completing the position fixation of the clamping table.

[0020] Step S5: Place the workpiece to be side-milled on the plane at the designated machining station, aligning the clamping side of the workpiece with the end of the clamping rod. Rotate the fine adjustment knob on the main body of the clamping table to move it vertically downward along the threaded hole. The bottom of the fine adjustment knob applies a pushing force to the end of the clamping rod, pushing the clamping rod laterally along the clamping rod through hole towards the adjustment cavity until the end of the clamping rod is in close contact with the workpiece surface, thus completing the clamping and fixing of the workpiece. Then, start the CNC milling operation for plane machining.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] 1. This invention achieves coarse positioning of the fixture body by cooperating with the clamping table and the meshing adjustment module, and completes subsequent fine clamping adjustments with the clamping module. It constructs a layered adjustment side-top clamping structure, which eliminates the traditional operation method of simultaneously adjusting the overall position and clamping components of the fixture. It effectively avoids the deviation problem caused by repeated adjustments, greatly simplifies the clamping operation process, significantly improves clamping efficiency, and can better adapt to the mass production needs of CNC milling of flat surfaces.

[0023] 2. The clamping table of the present invention achieves rigid fixation after coarse adjustment by meshing the teeth of the limiting rack and the meshing block. Combined with the fine adjustment knob in the clamping module and the hemispherical contact design of the clamping rod, the clamping force can be evenly transmitted and reasonably distributed. This ensures the rigidity of the clamping system and the uniform force on the workpiece, effectively ensuring the dimensional accuracy and surface quality of the optical plane during CNC milling of the side top.

[0024] 3. The overall structural design of this invention conforms to the anti-interference requirements of CNC milling side top clamping. The upper pull limit component of the meshing adjustment module can accurately limit the adjustment stroke and position of the clamping table, so that each component always maintains reasonable cooperation during adjustment and clamping, avoiding interference between components and between the clamping structure and the machining mechanism. At the same time, the blind operation position adjustment design further improves the convenience of operation, taking into account both clamping stability and operation efficiency. Attached Figure Description

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

[0026] Figure 2 This is a three-dimensional bottom-view structural diagram of the present invention;

[0027] Figure 3 This is a schematic diagram of the pull-up limiting component structure of the present invention;

[0028] Figure 4 This is a partial cross-sectional view of the present invention.

[0029] The numbers in the diagram represent: 1. Clamping table; 11. Clamping table body; 12. Adjustment cavity; 13. Limiting rack; 2. Meshing adjustment module; 21. Meshing block; 22. Embedded block; 23. Fixing bolt; 24. Pull-up limiting assembly; 241. Limiting rod groove; 242. Connecting hole; 243. Movable rod; 244. Return spring; 245. Limiting rod; 3. Clamping module; 31. Clamping rod through hole; 32. Clamping rod; 33. Fine adjustment knob. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments, which illustrate the above and other technical features and advantages of the present invention. However, the following embodiments are merely preferred embodiments of the present invention and are not exhaustive.

[0031] Example:

[0032] like Figures 1-4 As shown, a CNC milling side-top milling plane machining clamping device includes a clamping table 1, a meshing adjustment module 2 and a clamping module 3. The meshing adjustment module 2 is installed on one side of the inside of the clamping table 1, and the clamping module 3 is installed on the other side of the inside of the clamping table 1. The three work together to realize the position adjustment and clamping fixation of the workpiece.

[0033] The clamping table 1 includes a clamping table body 11, an adjusting cavity 12, and a limiting rack 13. The adjusting cavity 12 is located on one side of the clamping table body 11. Two sets of limiting racks 13 are fixed on the upper ends of the inner walls of the adjusting cavity 12. The adjusting cavity 12 is a through groove that runs through the clamping table body 11. The meshing adjusting module 2 is adapted and installed inside the adjusting cavity 12. The thickness of the limiting rack 13 is consistent with half the height of the adjusting cavity 12. When the operator lifts the clamping table body 11 upward, it can drive the limiting rack 13 to move upward synchronously, thereby causing the meshing adjusting module 2 to disengage from the limiting rack 13. After the clamping table body 11 is moved laterally to the target position, the clamping table body 11 is lowered so that the limiting rack 13 on the clamping table body 11 can re-mesh with the meshing adjusting module 2.

[0034] The meshing adjustment module 2 includes a meshing block 21, a pre-embedded block 22, and a fixing bolt 23. The meshing block 21 is disposed inside the adjustment cavity 12, and its two sides mesh with the limiting racks 13 on both sides of the inner wall of the adjustment cavity 12. The pre-embedded block 22 is disposed below the meshing block 21 and is used to pre-fix it inside the CNC milling machine's operating table. Matching threaded holes are opened at the center positions of both the meshing block 21 and the pre-embedded block 22. The fixing bolt 23 is threaded into the threaded holes. The meshing block 21 and the pre-embedded block 22 are fixed by the fixing bolt. The locking mechanism of 23 remains relatively fixed. With the engagement block 21 fixed, the engagement adjustment module 2 is also equipped with two sets of upward limiting components 24. These two sets of upward limiting components 24 are symmetrically arranged on both sides of the engagement block 21. Each upward limiting component 24 includes a limiting rod groove 241, a connecting hole 242, a movable rod 243, a return spring 244, and a limiting rod 245. The two limiting rod grooves 241 are longitudinally opened on the upper part of one side of the engagement block 21, and the connecting hole 242 is transversely opened on the upper part of one side of the engagement block 21. The connecting hole 242 connects to the limiting rod... The groove 241 is connected, the movable rod 243 is slidably sleeved inside the connecting hole 242, the return spring 244 is sleeved outside the movable rod 243, and the two ends of the return spring 244 abut against the end of the movable rod 243 and the outer wall of the meshing block 21, respectively. The limiting rod 245 is slidably sleeved inside the limiting rod groove 241. The inner wall of the adjusting cavity 12 has vertical grooves on both the front and rear sides to match the limiting rod 245. The two ends of the limiting rod 245 are respectively sleeved in the front and rear sets of vertical grooves, and the front and rear ends of the limiting rod 245 abut against the two... The inner walls of the vertical grooves abut against each other, and the height of the vertical grooves is longer than the thickness of the limiting rack 13. When the clamping table body 11 is pulled up, the vertical grooves and the limiting rod 245 form a sliding fit, which can accurately limit the upward pull height of the clamping table body 11. When the clamping table body 11 reaches the maximum upward pull height, the limiting rack 13 just disengages from the meshing block 21. At this time, the meshing block 21 still maintains contact with the inner wall of the adjusting cavity 12. The clamping table body 11 can move laterally along the outside of the meshing block 21 to adjust its own setting position.

[0035] The limiting rod 245 has several slots on the side facing the movable rod 243. The number of slots is the same as the number of teeth on the limiting rack 13, and the position of the slots corresponds to the center position of each tooth. The edges of each set of slots are rounded and chamfered to avoid scratching the movable rod 243. When the slots on the limiting rod 245 are aligned with the end of the movable rod 243, the movable rod 243 is inserted into the slot under the elastic force of the return spring 244. As the limiting rod 245 moves horizontally synchronously with the clamping table body 11, the movable rod 243 is squeezed out of the slot by the side wall of the slot, and the return spring 244 is compressed and stored until the movable rod 243 is aligned with the next set of slots. Then, the elastic force of the return spring 244 will push the movable rod 243 back into the slot.

[0036] The outer wall surface of the meshing block 21 facing the limiting rack 13 is formed with two sets of teeth for meshing with the limiting rack 13. The connecting hole 242 is opened at the center position of the two sets of teeth. When the clamping table body 11 is pushed to adjust the position, when the meshing block 21 and the limiting rack 13 are engaged, the connecting hole 242 will be aligned with the center position of one set of teeth in the limiting rack 13. At this time, the movable rod 243 is also aligned with the slot on the limiting rod 245. Under the action of the spring force, the movable rod 243 can be smoothly inserted into the slot to form a nested connection. The lateral movement of the clamping table body 11 will cause the movable rod 245 to be aligned with the slot on the limiting rod 245. The rod 243 repeatedly inserts into and exits the slot. The operator can judge the position by touch until the position of the clamping table body 11 meets the processing requirements and the movable rod 243 is stably inserted into the slot corresponding to the position of the limiting rod 245. At this time, it can be considered that the teeth on the outer wall of the meshing block 21 and the limiting rack 13 are misaligned. Then, the clamping table body 11 is lowered so that the limiting rack 13 and the teeth on the outer wall of the meshing block 21 can be precisely meshed to form a meshing and fixed relationship. During the entire operation, there is no need to visually observe the relative position of the meshing block 21 and the limiting rack 13, which realizes convenient blind operation.

[0037] The clamping module 3 includes a clamping rod through hole 31, a clamping rod 32, and a fine adjustment knob 33. The clamping rod through hole 31 is located at the center of the other side of the clamping table body 11 and is connected to the adjustment cavity 12. The clamping rod 32 is slidably fitted inside the clamping rod through hole 31. A threaded hole communicating with the clamping rod through hole 31 is located at the center of the top of the other side of the clamping table body 11. The fine adjustment knob 33 is threaded into the threaded hole, and the bottom end of the fine adjustment knob 33 abuts against the end of the clamping rod 32. The clamping rod 32 and the fine adjustment knob 33 are in contact with each other. Both are hemispherical to reduce frictional resistance during relative movement. After adjusting the position of the clamping table body 11 and initially placing the workpiece, further clamping and fixing operations can be performed. At this time, rotate the fine adjustment knob 33 to move it vertically downward along the threaded hole. During the movement, the bottom end of the fine adjustment knob 33 will apply a pushing force to the end of the clamping rod 32, pushing the clamping rod 32 to move further laterally along the clamping rod through hole 31 towards the adjustment cavity 12. During the further lateral movement, the other end of the clamping rod 32 will come into close contact with the surface of the workpiece, thereby achieving a firm clamping and fixing of the workpiece.

[0038] A method for using a clamping device for CNC side milling and top milling of a plane includes the following steps:

[0039] Step S1: Pre-fix the embedded block 22 at the designated machining position on the CNC milling machine's operating table, place the meshing block 21 above the embedded block 22, align the threaded holes at their centers, screw the fixing bolt 23 into the threaded hole and lock it, so that the meshing block 21 and the embedded block 22 remain relatively fixed, and fit the adjusting cavity 12 of the clamping table body 11 onto the outside of the meshing block 21, so that the two ends of the limiting rod 245 are fitted into the vertical grooves on the front and rear sides of the inner wall of the adjusting cavity 12, and at the same time, allow the limiting rack 13 on the inner wall of the adjusting cavity 12 to initially mesh with the teeth on the outer wall of the meshing block 21, thus completing the initial assembly and setup of the clamping table body 11;

[0040] Step S2: Pull the clamping table body 11 upward. The vertical groove on the inner wall of the adjusting cavity 12 and the limiting rod 245 form a sliding fit until the clamping table body 11 reaches the maximum upward height. At this time, the limiting rack 13 and the teeth on the outer wall of the meshing block 21 are completely disengaged.

[0041] Step S3: Keep the clamping table body 11 in the upward state, and move the clamping table body 11 laterally along the outside of the meshing block 21. During the movement, the movable rod 243 repeatedly inserts into and exits the slot on the limit rod 245 under the action of the return spring 244. The operator judges the position according to the touch until the clamping table body 11 is moved to the target position required for processing, and the movable rod 243 is stably inserted into the slot at the corresponding position of the limit rod 245.

[0042] Step S4: Loosen the clamping table body 11 and slowly lower it so that the limiting racks 13 on both sides of the inner wall of the adjusting cavity 12 accurately engage with the teeth on the outer wall of the meshing block 21, thus completing the position fixation of the clamping table 1.

[0043] Step S5: Place the workpiece to be side-milled on the plane at the designated machining station, aligning the clamping side of the workpiece with the end of the clamping rod 32. Rotate the fine adjustment knob 33 on the clamping table body 11 to move it vertically downward along the threaded hole. The bottom of the fine adjustment knob 33 applies a pushing force to the end of the clamping rod 32, pushing the clamping rod 32 laterally along the clamping rod through hole 31 toward the adjustment cavity 12 until the end of the clamping rod 32 is in close contact with the workpiece surface, thus completing the clamping and fixing of the workpiece. Then, start the CNC milling operation for plane machining.

[0044] The above are merely preferred embodiments of the present invention and are illustrative in nature, not restrictive. Those skilled in the art will understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present invention, all of which will fall within the protection scope of the present invention.

Claims

1. A clamping device for CNC side milling and top milling of a plane, characterized in that, It includes a clamping table (1), a meshing adjustment module (2) and a clamping module (3). The meshing adjustment module (2) is provided on one side of the inside of the clamping table (1), and the clamping module (3) is provided on the other side of the inside of the clamping table (1). The clamping table (1) includes a clamping table body (11), an adjusting cavity (12), and a limiting rack (13). The adjusting cavity (12) is located on one side of the clamping table body (11), and the two sets of limiting racks (13) are respectively located on the upper ends of the inner walls of the adjusting cavity (12).

2. The CNC milling side-milling plane machining clamping device as described in claim 1, characterized in that, The adjusting cavity (12) penetrates the clamping table body (11), the meshing adjusting module (2) is disposed inside the adjusting cavity (12), and the thickness of the limiting rack (13) is consistent with half the height of the adjusting cavity (12).

3. The CNC milling side-milling plane machining clamping device as described in claim 1, characterized in that, The meshing adjustment module (2) includes a meshing block (21), a pre-embedded block (22), and a fixing bolt (23). The meshing block (21) is located inside the adjustment cavity (12), and the two sides of the meshing block (21) mesh with the limiting racks (13) on both sides of the inner wall of the adjustment cavity (12). The pre-embedded block (22) is located below the meshing block (21) and is used to fix it inside the operating table. Threaded holes are opened at the center positions of the meshing block (21) and the pre-embedded block (22). The fixing bolt (23) is threaded into the threaded hole. The meshing block (21) and the pre-embedded block (22) are fixed by the fixing bolt (23).

4. The CNC milling side-milling plane machining clamping device as described in claim 1, characterized in that, The meshing adjustment module (2) further includes an upward limiting component (24). Two sets of upward limiting components (24) are respectively disposed on both sides of the meshing block (21). The upward limiting component (24) includes a limiting rod groove (241), a connecting hole (242), a movable rod (243), a return spring (244), and a limiting rod (245). The two limiting rod grooves (241) are longitudinally opened on the upper part of one side of the meshing block (21). The connecting hole (242) The connecting hole (242) is horizontally opened on the upper part of one side of the engagement block (21). The connecting hole (242) is connected to the limiting rod groove (241). The movable rod (243) is sleeved inside the connecting hole (242). The return spring (244) is sleeved outside the movable rod (243). The two ends of the return spring (244) are respectively connected to the movable rod (243) and the outer wall of the engagement block (21). The limiting rod (245) is sleeved inside the limiting rod groove (241).

5. The CNC milling side-milling plane machining clamping device as described in claim 4, characterized in that, The inner wall of the adjusting cavity (12) is provided with vertical grooves on both the front and rear sides for matching the limiting rod (245). The two ends of the limiting rod (245) are respectively fitted into the two sets of vertical grooves, and the two ends of the limiting rod (245) abut against the inner wall of the two sets of vertical grooves respectively. The height of the vertical groove is longer than the thickness of the limiting rack (13).

6. The CNC milling side-milling plane machining clamping device as described in claim 5, characterized in that, The limiting rod (245) has several slots on the side facing the movable rod (243). The number of slots is the same as the number of teeth of the limiting rack (13), and the position of the slots corresponds to the center position of each tooth. The edges of each set of slots are chamfered.

7. The CNC milling side-milling plane machining clamping device as described in claim 4, characterized in that, The outer wall surface of the meshing block (21) facing the limiting rack (13) is formed with two sets of teeth for meshing with the limiting rack (13), and the connecting hole (242) is opened at the center of the two sets of teeth.

8. The CNC milling side-milling plane machining clamping device as described in claim 4, characterized in that, The clamping module (3) includes a clamping rod through hole (31), a clamping rod (32), and a fine adjustment knob (33). The clamping rod through hole (31) is located at the center of the other side of the clamping table body (11). The clamping rod through hole (31) is connected to the adjustment cavity (12). The clamping rod (32) is sleeved inside the clamping rod through hole (31). A threaded hole connected to the clamping rod through hole (31) is provided at the center of the top of the other side of the clamping table body (11). The fine adjustment knob (33) is threaded into the threaded hole.

9. The CNC milling side-milling plane machining clamping device as described in claim 8, characterized in that, The bottom end of the fine adjustment knob (33) abuts against the end of the clamping rod (32), and the ends of the clamping rod (32) and the fine adjustment knob (33) that are in contact with each other are both hemispherical.

10. A method of using a clamping device for CNC side milling and top milling plane machining as described in any one of claims 1-9, characterized in that, Includes the following steps: Step S1: Pre-fix the embedded block (22) at the designated machining position on the CNC milling machine's operating table, place the meshing block (21) above the embedded block (22), align the threaded holes at their centers, screw the fixing bolt (23) into the threaded hole and lock it, so that the meshing block (21) and the embedded block (22) remain relatively fixed, and fit the adjusting cavity (12) of the clamping table body (11) onto the outside of the meshing block (21), so that the two ends of the limiting rod (245) fit into the vertical grooves on the front and rear sides of the inner wall of the adjusting cavity (12), and at the same time, let the limiting rack (13) on the inner wall of the adjusting cavity (12) initially mesh with the teeth on the outer wall of the meshing block (21), thus completing the initial assembly and setup of the clamping table body (11); Step S2, pull the clamping table body (11) upward, the vertical groove on the inner wall of the adjusting cavity (12) and the limiting rod (245) form a sliding fit until the clamping table body (11) reaches the maximum upward height, at which time the limiting rack (13) and the teeth on the outer wall of the meshing block (21) are completely disengaged; Step S3: Keep the clamping table body (11) in the upward state and move the clamping table body (11) laterally along the outside of the meshing block (21). During the movement, the movable rod (243) repeatedly inserts into and exits the slot on the limit rod (245) under the action of the return spring (244). The operator judges the position according to the touch until the clamping table body (11) is moved to the target position required for processing, and the movable rod (243) is stably inserted into the slot at the corresponding position of the limit rod (245). Step S4: Loosen the clamping table body (11) and slowly lower it so that the limiting racks (13) on both sides of the inner wall of the adjusting cavity (12) precisely mesh with the teeth on the outer wall of the meshing block (21) to complete the position fixation of the clamping table (1). Step S5: Place the workpiece that needs to be side-top milled into a plane at the designated machining station, aligning the clamping side of the workpiece with the end of the clamping rod (32). Rotate the fine adjustment knob (33) on the clamping table body (11) to move it vertically downward along the threaded hole. Apply a pushing force to the end of the clamping rod (32) at the bottom of the fine adjustment knob (33), pushing the clamping rod (32) to move laterally along the clamping rod through hole (31) towards the adjustment cavity (12) until the end of the clamping rod (32) is in close contact with the workpiece surface, thus completing the clamping and fixing of the workpiece. Then, start the CNC milling operation for plane machining.

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