Clamping mechanism of numerical control machine tool

Abstract

The utility model relates to the technical field of numerically-controlled machine tools, and discloses a clamping mechanism of a numerically-controlled machine tool, which comprises a support frame, a distance adjusting mechanism is arranged on the support frame, a stable clamping mechanism is arranged at the top of the distance adjusting mechanism, a convenient replacement mechanism is arranged on the stable clamping mechanism, and the distance adjusting mechanism is arranged on the support frame. The convenient replacement mechanism comprises a protruding piece, the outer wall of the protruding piece is movably sleeved with a connecting sleeve, a through groove is formed in the side face of the connecting sleeve, and a groove is formed in the outer wall of the protruding piece. Through the overall design of the convenient replacement mechanism, the pin fixing block is inserted into and pulled out of the connecting sleeve, and the connecting sleeve is inserted into and pulled out of the protruding piece, so that the function of replacing the matched clamp is achieved, the matched clamp is suitable for workpieces with different diameters, the problem that multiple sets of bolts need to be sequentially disassembled and assembled when the clamp is replaced is solved, and the work efficiency is improved. Therefore, the working efficiency of the numerical control machine tool is improved.

Description

Technical Field

[0001] This utility model relates to the field of CNC machine tool technology, specifically to a clamping mechanism for a CNC machine tool. Background Technology

[0002] A CNC machine tool is an automated machine tool equipped with a program control system. This control system can logically process programs with control codes or other symbolic instructions, decode them, and input them into the CNC device via an information carrier. After processing, the CNC device sends out various control signals to control the machine tool's movements, automatically machining parts according to the shape and dimensions required by the drawings.

[0003] When machining deep holes on a CNC machine tool, a clamping mechanism is installed. This mechanism holds and fixes the workpiece to ensure it maintains a stable position and orientation during machining, thus guaranteeing machining accuracy. However, when fixing workpieces of different diameters, the fixtures within the clamping mechanism need to be replaced. In existing designs, this replacement process requires the sequential disassembly and reassembly of multiple sets of bolts, which affects the efficiency of fixture replacement. Utility Model Content

[0004] The purpose of this invention is to provide a clamping mechanism for CNC machine tools, which solves the problem of low efficiency in replacing fixtures in the prior art.

[0005] This utility model provides the following technical solution: a clamping mechanism for a CNC machine tool, including a support frame, a spacing adjustment mechanism on the support frame, a stable clamping mechanism on the top of the spacing adjustment mechanism, and a convenient replacement mechanism on the stable clamping mechanism.

[0006] The convenient replacement mechanism includes a protrusion, a connecting sleeve movably sleeved on the outer wall of the protrusion, a through groove on the side of the connecting sleeve, a groove on the outer wall of the protrusion, a pin block movably inserted into the inner cavity of the through groove and the groove, a collection plate fixedly connected to the end of the pin block, a magnetic block fixedly installed on the inner wall of the collection plate, the outer wall of the magnetic block being magnetically connected to the outer wall of the connecting sleeve, a handle fixedly installed on the outer wall of the collection plate, a connecting block fixedly connected to the side of the connecting sleeve away from the through groove, a fitting clamp fixedly installed at the end of the connecting block away from the connecting sleeve, and a connecting strip fixedly installed on the outer wall of the fitting clamp.

[0007] As a preferred embodiment of the above technical solution, the spacing adjustment mechanism includes a track rod, which is fixedly installed between the two sides of the inner wall of the support frame. A sliding seat is slidably connected to the outer wall of the track rod, and a lifting plate seat is fixedly installed on the top of the sliding seat.

[0008] The above technical solution, through the design of the track rod and the sliding seat, makes it easy for users to adjust the left and right positions of the sliding seat.

[0009] As a preferred embodiment of the above technical solution, sliding frames are fixedly installed on both the front and back sides of the sliding seat, and the sliding frames are slidably connected to the outer wall of the support frame.

[0010] Through the above technical solution, the sliding frame design can be used in conjunction with the track rod to provide more stable sliding support for the sliding seat.

[0011] As a preferred embodiment of the above technical solution, the top and bottom of the sliding frame are both threaded with positioning bolts, and the threaded end of the positioning bolt is movably connected to the outer wall of the support frame.

[0012] The above technical solution, through the design of the positioning bolt, can position the sliding seat after adjustment.

[0013] As a preferred embodiment of the above technical solution, the stabilizing clamping mechanism includes a fixed clamp, which is fixedly installed on the top of the raised plate base, and a connecting arm is fixedly installed on the outer wall of the fixed clamp.

[0014] As a preferred embodiment of the above technical solution, a receiving seat is fixedly installed at the end of the connecting arm away from the fixed clamp, a clamping cylinder is fixedly installed on the top of the receiving seat, the telescopic end of the clamping cylinder extends to the bottom of the receiving seat and is fixedly connected to a movable clamp, and the protrusion is fixedly installed on the fixed clamp and the movable clamp.

[0015] Through the above technical solution, the design of the clamping cylinder can drive the movable clamping seat to move downward, thereby realizing the function of automatically clamping the workpiece.

[0016] As a preferred embodiment of the above technical solution, a sliding rod is fixedly installed on the top of the movable clamp, and the outer wall of the sliding rod is slidably connected to the inner wall of the receiving seat.

[0017] The above technical solution, through the design of the sliding rod, improves the stability of the movable clamp's movement.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] This utility model, through the design of a convenient replacement mechanism, allows for the insertion and removal of the pin block on the connecting sleeve and the connecting sleeve on the protruding part, thus realizing the function of replacing the mating fixture. This makes it suitable for workpieces of different diameters, avoiding the need to disassemble and reassemble multiple sets of bolts sequentially when changing fixtures, improving replacement efficiency, and thus improving the working efficiency of CNC machine tools. Through the overall design of the spacing adjustment mechanism, the distance between the two sets of mating fixtures can be adjusted, allowing for stable clamping of workpieces of different lengths, increasing the practicality of this structure. Attached Figure Description

[0020] Figure 1 This is a perspective view of the present utility model;

[0021] Figure 2 This is a schematic diagram of the spacing adjustment mechanism of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the stabilizing clamping mechanism of this utility model;

[0023] Figure 4 This is a structural schematic diagram of the convenient replacement mechanism of this utility model.

[0024] In the diagram: 1. Support frame; 2. Spacing adjustment mechanism; 21. Track rod; 22. Sliding seat; 23. Lifting plate seat; 24. Sliding frame; 25. Positioning bolt; 3. Stable clamping mechanism; 31. Fixed clamp; 32. Connecting arm; 33. Receiving seat; 34. Movable clamp; 35. Sliding rod; 36. Clamping cylinder; 4. Convenient replacement mechanism; 41. Protrusion; 42. Connecting sleeve; 43. Through groove; 44. Groove; 45. Pin block; 451. Assembly plate; 452. Magnetic block; 453. Handle; 46. Connecting block; 47. Fitting clamp; 48. Connecting strip. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0026] like Figures 1-4As shown, this utility model provides a technical solution: a clamping mechanism for a CNC machine tool, including a support frame 1, a spacing adjustment mechanism 2 on the support frame 1, a stable clamping mechanism 3 on the top of the spacing adjustment mechanism 2, a convenient replacement mechanism 4 on the stable clamping mechanism 3, the convenient replacement mechanism 4 including a protrusion 41, a connecting sleeve 42 movably sleeved on the outer wall of the protrusion 41, a through groove 43 on the side of the connecting sleeve 42, and a groove 44 on the outer wall of the protrusion 41. A pin block 45 is movably inserted into the inner cavity of the through groove 43 and the groove 44. A collection plate 451 is fixedly connected to the end of the pin block 45. A magnetic block 452 is fixedly installed on the inner wall of the collection plate 451. The outer wall of the magnetic block 452 is magnetically connected to the outer wall of the connecting sleeve 42. A handle 453 is fixedly installed on the outer wall of the collection plate 451. A connecting block 46 is fixedly connected to the side of the connecting sleeve 42 away from the through groove 43. A fitting clamp is fixedly installed at the end of the connecting block 46 away from the connecting sleeve 42. 47. A connecting strip 48 is fixedly installed on the outer wall of the fitting clamp 47. Pulling the assembly plate 451 away from the connecting sleeve 42 causes the pin block 45 to be removed from the inner cavity of the through groove 43 and the groove 44. Then the connecting sleeve 42 can be removed from the outer wall of the protrusion 41. Subsequently, a connecting sleeve 42 with a fitting clamp 47 of suitable size is fitted onto the outer wall of the protrusion 41. Then the pin block 45 is inserted back into the inner cavity of the through groove 43 and the groove 44 and magnetically attracted by the magnetic block 452. Connected to the outer wall of the connecting sleeve 42, the pin block 45 is positioned in the through groove 43 and the recess 44, thereby locking the connecting sleeve 42 to the outer wall of the protrusion 41, realizing the replacement of the mating clamp 47. This avoids the problem of having to disassemble and install multiple sets of bolts sequentially when replacing the clamp, improving the efficiency of replacement and reducing the labor intensity of workers. Through the design of the connecting strip 48, two adjacent mating clamps 47 can be connected together, which facilitates their unified installation and disassembly, improving efficiency.

[0027] As one implementation method in this embodiment, such as Figure 2As shown, the spacing adjustment mechanism 2 includes a track rod 21, which is fixedly installed between the two sides of the inner wall of the support frame 1. A sliding seat 22 is slidably connected to the outer wall of the track rod 21. A lifting plate seat 23 is fixedly installed on the top of the sliding seat 22. Sliding frame members 24 are fixedly installed on both the front and back of the sliding seat 22. The sliding frame members 24 are slidably connected to the outer wall of the support frame 1. Positioning bolts 25 are threadedly connected to the top and bottom of the sliding frame members 24. The threaded ends of the positioning bolts 25 are movably connected to the outer wall of the support frame 1. Loosening the positioning bolts 25 allows the threaded ends of the positioning bolts 25 to move away from the outer wall of the support frame 1, thereby allowing the sliding seat 22 to slide on the outer wall of the track rod 21 to adjust the distance between the two sets of mating clamps 47. This allows for the stable clamping of workpieces of different lengths. After the position of the sliding seat 22 is adjusted to the correct position, the positioning bolts 25 are tightened so that their threaded ends fit against the outer wall of the support frame 1, thus completing the positioning of the sliding seat 22.

[0028] As one implementation method in this embodiment, such as Figure 3 As shown, the stabilizing clamping mechanism 3 includes a fixed clamping seat 31, which is fixedly installed on the top of the lifting plate seat 23. A connecting arm 32 is fixedly installed on the outer wall of the fixed clamping seat 31. A receiving seat 33 is fixedly installed at the end of the connecting arm 32 away from the fixed clamping seat 31. A clamping cylinder 36 is fixedly installed on the top of the receiving seat 33. The telescopic end of the clamping cylinder 36 extends to the bottom of the receiving seat 33 and is fixedly connected to a movable clamping seat 34. A protrusion 41 is fixedly installed on the fixed clamping seat 31 and the movable clamping seat 34. A sliding rod 35 is fixedly installed on the top of the 34. The outer wall of the sliding rod 35 is slidably connected to the inner wall of the receiving seat 33. It controls the extension of the clamping cylinder 36, which can drive the upper fitting fixture 47 to move downward. The arc surface of the fitting fixture 47 will fit with the outer surface of the workpiece, thus realizing the function of clamping the workpiece. Through the design of the sliding rod 35, during the extension and retraction of the clamping cylinder 36, the sliding rod 35 will slide on the outer wall of the receiving seat 33, increasing the stability of the movable clamp 34 during the overall lifting process.

[0029] Working principle: When using, if the fitting clamp 47 needs to be replaced, pull the pin block 45 out of the through groove 43, and then remove the connecting sleeve 42 from the outer wall of the protrusion 41. Then, replace it with a connecting sleeve 42 with a fitting clamp 47 of the appropriate size and put it on the outer wall of the protrusion 41. Next, insert the pin block 45 back into the inner cavity of the through groove 43 and the groove 44, thus completing the replacement of the fitting clamp 47. When clamping the workpiece, place the workpiece on the lower fitting clamp 47, and then control the clamping cylinder 36 to extend, driving the upper fitting clamp 47 to move downward. The arc surface of the fitting clamp 47 will fit with the outer surface of the workpiece, thus realizing the function of clamping the workpiece.

[0030] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. Clamping mechanism of a numerically controlled machine tool, comprising a support frame (1), characterized in that: The support frame (1) is provided with a spacing adjusting mechanism (2), the top of the spacing adjusting mechanism (2) is provided with a stable clamping mechanism (3), and the stable clamping mechanism (3) is provided with a convenient replacement mechanism (4). The convenient replacement mechanism (4) comprises a protruding piece (41), a connecting sleeve (42) movably sleeved on the outer wall of the protruding piece (41), a through groove (43) formed in the side surface of the connecting sleeve (42), a recess (44) formed in the outer wall of the protruding piece (41), a pin block (45) movably inserted into the inner cavities of the through groove (43) and the recess (44), a collection plate (451) fixedly connected to the end of the pin block (45), a magnetic attraction block (452) fixedly installed on the inner wall of the collection plate (451), the outer wall of the magnetic attraction block (452) and the outer wall of the connecting sleeve (42) being magnetically connected, a handle (453) fixedly installed on the outer wall of the collection plate (451), a connecting block (46) fixedly connected to the side, away from the through groove (43), of the connecting sleeve (42), and a fitting clamp (47) fixedly installed on the end, away from the connecting sleeve (42), of the connecting block (46).

2. A chucking mechanism for a numerically controlled machine tool according to claim 1, characterized in that: The spacing adjusting mechanism (2) comprises a track rod (21) fixedly installed between the two sides of the inner wall of the support frame (1), a sliding seat (22) slidably connected to the outer wall of the track rod (21), and a lifting plate seat (23) fixedly installed on the top of the sliding seat (22).

3. A chucking mechanism for a numerically controlled machine tool according to claim 2, characterized in that: The front surface and the back surface of the sliding seat (22) are both fixedly installed with a sliding frame (24) slidably connected to the outer wall of the support frame (1).

4. A chucking mechanism for a numerically controlled machine tool according to claim 3, characterized in that: The top and the bottom of the sliding frame (24) are both threadedly connected with a positioning bolt (25) movably connected with the outer wall of the support frame (1) at the threaded end.

5. The chucking mechanism of claim 2, wherein: The stable clamping mechanism (3) comprises a fixed clamping seat (31) fixedly installed on the top of the lifting plate seat (23), and a connecting arm (32) fixedly installed on the outer wall of the fixed clamping seat (31).

6. A chucking mechanism for a numerically controlled machine tool according to claim 5, characterized in that: The end, away from the fixed clamping seat (31), of the connecting arm (32) is fixedly installed with a receiving seat (33), the top of the receiving seat (33) is fixedly installed with a clamping air cylinder (36), the telescopic end of the clamping air cylinder (36) extends to the bottom of the receiving seat (33) and is fixedly connected with a movable clamping seat (34), and the protruding piece (41) is fixedly installed on the fixed clamping seat (31) and the movable clamping seat (34).

7. A chucking mechanism for a numerically controlled machine tool according to claim 6, characterized in that: The top of the movable clamping seat (34) is fixedly installed with a sliding rod (35) slidably connected with the inner wall of the receiving seat (33).

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