Numerical control machine tool fixing tool

Abstract

The utility model relates to the technical field of fixing tools, in particular to a numerical control machine tool fixing tool which comprises a frame body, and a first fixing block and a second fixing block are oppositely installed on the top of the frame body at intervals. The moving cylinder movably penetrates through the second fixing block, and the moving cylinder is selectively fixed to the second fixing block through a locking mechanism; the lead screw penetrates through the moving cylinder and is in threaded connection with the moving cylinder; the abutting mechanism is arranged at the first end of the lead screw and used for applying elastic abutting force to the workpiece along with rotation of the lead screw. According to the utility model, the movable cylinder can quickly move to a proper position of a workpiece on a preset path, so that the time required by manual adjustment and repeated rotation of the screw rod is reduced, and the fixing efficiency of the workpiece is improved.

Description

Technical Field

[0001] This utility model relates to the field of fixed tooling technology, specifically a fixed tooling for CNC machine tools. Background Technology

[0002] A CNC machine tool is a machine tool that uses a digital control system to automatically complete the machining of workpieces through pre-programmed instructions. Fixed fixtures refer to the devices used on CNC machine tools to fix, support, and position workpieces.

[0003] The existing patent with publication number CN221676512U proposes a CNC machine tool fixing fixture, which uses a knob to rotate a screw, thereby moving a clamping block to clamp and fix the workpiece.

[0004] However, in the above-mentioned technical solution, although rotating the screw can drive the clamping block to clamp and fix the workpiece, in production environments with mass production or frequent workpiece changes, the size difference between the two workpieces to be fixed may be large. This results in a large initial distance between the clamping block and the workpieces to be fixed, requiring the operator to rotate the knob multiple times to gradually shorten or increase the clamping distance, thus limiting the efficiency of the entire fixing process. Therefore, this utility model aims to provide a fixing fixture that can improve the workpiece fixing efficiency. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a CNC machine tool fixing fixture that can improve the workpiece fixing efficiency, thereby solving the problem of limited workpiece fixing efficiency in existing technologies.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides a CNC machine tool fixing fixture, including a frame, with a fixing block 1 and a fixing block 2 respectively installed at a distance from each other on the top; a movable cylinder that movably passes through the fixing block 2, the movable cylinder being selectively fixed to the fixing block 2 by a locking mechanism; a lead screw that passes through the movable cylinder and is threadedly connected to it; and a clamping mechanism located at the first end of the lead screw, used to apply an elastic clamping force to the workpiece as the lead screw rotates.

[0009] Optionally, the locking mechanism includes a locking pin, a moving groove is provided on the moving cylinder along its length direction, and a plurality of locking grooves communicating with the moving groove are provided on the moving cylinder at intervals along its length direction. The locking pin passes through the fixed block and extends into the moving groove, and the locking pin is adapted to slide in the moving groove and the locking groove.

[0010] Optionally, a rotating sleeve is fixed to the first end of the movable cylinder, and a rotating rod is provided on the rotating sleeve.

[0011] Optionally, the clamping mechanism includes a clamping part one, a clamping part two, a clamping post, a limiting block, a guide rod, and a spring; the clamping post is fixed to the first end of the lead screw, the first end of the clamping part one has a clamping groove suitable for the clamping post to be inserted movably, the limiting block is fixed to the free end of the clamping post and movably disposed in the clamping groove; the guide rod is fixed to the clamping groove and movably passes through the limiting block, the spring is sleeved on the guide rod and elastically abuts against the limiting block; the end of the clamping part two is rotatably connected to the second end of the clamping part one.

[0012] Optionally, a rotating block is fixed to the second end of the lead screw, and a polygonal rotating groove is provided at the free end of the rotating block.

[0013] Optionally, the rotating sleeve is configured to be made of rubber.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides a CNC machine tool fixing fixture, which has the following features:

[0016] Beneficial effects:

[0017] 1. This utility model enables the movable cylinder to quickly move to the appropriate position of the workpiece along a predetermined path, reducing the time required for manual adjustment and multiple screw rotations, and improving the workpiece fixing efficiency;

[0018] 2. By setting a rotating rod, this utility model provides the user with a fulcrum for rotating the moving cylinder when the user needs to rotate the moving cylinder;

[0019] 3. This utility model sets up a rotating block and a rotating groove, the shape of which is adapted to the matching rotating tool, thereby making it easy for the user to insert the rotating tool into the rotating groove to achieve flexible rotation of the lead screw. Attached Figure Description

[0020] Figure 1 A three-dimensional structural schematic diagram of the present invention is shown;

[0021] Figure 2 A three-dimensional cross-sectional structural diagram of the present invention is shown;

[0022] Figure 3 It shows Figure 2 A magnified structural diagram at point A;

[0023] Figure 4This diagram shows a partial three-dimensional view and a three-dimensional cross-sectional view of the fixing block two of this utility model;

[0024] Figure 5 A schematic diagram of a partial three-dimensional disassembled structure of this utility model is shown.

[0025] In the diagram: 1. Frame; 2. Fixed block one; 3. Fixed block two; 4. Moving cylinder; 5. Locking mechanism; 6. Lead screw; 7. Clamping mechanism; 8. Locking pin; 9. Moving groove; 10. Locking groove; 11. Rotating sleeve; 12. Rotating rod; 13. Clamping part one; 14. Clamping part two; 15. Clamping column; 16. Limiting block; 17. Guide rod; 18. Rotating groove; 19. Clamping groove; 20. Rotating block; 21. Spring. Detailed Implementation

[0026] 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.

[0027] Example: Please refer to Figures 1 to 5 According to an embodiment of the present invention, a technical solution is provided: a CNC machine tool fixing fixture, including a frame 1, with fixing block 2 and fixing block 3 respectively installed at a distance from each other on the top; a movable cylinder 4, which movably passes through fixing block 3, and the movable cylinder 4 is selectively fixed on fixing block 3 by a locking mechanism 5; a lead screw 6, which passes through the movable cylinder 4 and is threadedly connected to it; and a clamping mechanism 7, which is provided at the first end of the lead screw 6, for applying an elastic clamping force to the workpiece as the lead screw 6 rotates.

[0028] The CNC machine tool fixture with the above structure allows for precise workpiece fixing. First, the workpiece is placed at a predetermined position between fixing block 2 and fixing block 3. Then, the moving cylinder 4 is unlocked from fixing block 3 via locking mechanism 5, allowing it to move along a predetermined path on fixing block 3. Next, the position of the moving cylinder 4 is adjusted according to the workpiece's dimensions to ensure the clamping space matches the workpiece size. After adjustment, the moving cylinder 4 is fixed to fixing block 3 via locking mechanism 5, ensuring it will not shift during machining. Then, the lead screw 6 is rotated to move along the thread direction of the moving cylinder 4, gradually abutting the workpiece. Simultaneously, the clamping mechanism 7 gradually applies an elastic clamping force to the workpiece. The entire fixing process, by allowing the moving cylinder 4 to quickly move to the appropriate position on the workpiece along a predetermined path, reduces the time required for manual adjustment and multiple rotations of the lead screw 6, thus improving the workpiece fixing efficiency.

[0029] In this embodiment, the locking mechanism 5 includes a locking pin 8. A moving groove 9 is provided on the moving cylinder 4 along its length direction. A plurality of locking grooves 10 communicating with the moving groove 9 are provided on the moving cylinder 4 at intervals along its length direction. The locking pin 8 passes through the fixing block 2 3 and extends into the moving groove 9. The locking pin 8 is adapted to slide in the moving groove 9 and the locking groove 10. When the user needs to fix the moving cylinder 4 on the fixing block 2 3, firstly, the moving cylinder 4 is adjusted to a predetermined position. During this adjustment process, the locking pin 8 will move in the moving groove 9. When the moving cylinder 4 is in the predetermined position, the moving cylinder 4 is rotated so that the locking pin 8 moves into the locking groove 10. At this time, the locking pin 8 is engaged in the locking groove 10. The locking pin 8 will restrict the moving cylinder 4 from moving forward or backward in a straight line in the direction of the fixing block 2, thereby ensuring that the moving cylinder 4 remains stable during the processing and preventing positional movement caused by vibration or other external forces.

[0030] It should be noted that when the lead screw 6 rotates and moves in the direction of the fixed block 2, the locking groove 10 will restrict the lead screw 6 from driving the moving cylinder 4 to move.

[0031] Specifically, after the locking pin 8 is engaged in the locking groove 10, a mechanical constraint is formed between the locking pin 8 and the locking groove 10, thereby preventing the moving cylinder 4 from rotating clockwise around its axis.

[0032] In this embodiment, a rotating sleeve 11 is fixed at the first end of the movable cylinder 4, and a rotating rod 12 is provided on the rotating sleeve 11. When the user needs to rotate the movable cylinder 4, the rotating rod 12 will provide the user with a fulcrum for rotating the movable cylinder 4, so that the user can rotate the movable cylinder 4.

[0033] In this embodiment, the clamping mechanism 7 includes a clamping part 13, a clamping part 24, a clamping post 15, a limiting block 16, a guide rod 17, and a spring 21. The clamping post 15 is fixed to the first end of the lead screw 6. The first end of the clamping part 13 has a clamping groove 19 suitable for the clamping post 15 to be inserted. The limiting block 16 is fixed to the free end of the clamping post 15 and is movably disposed in the clamping groove 19. The guide rod 17 is fixed to the clamping groove 19 and movably passes through the limiting block 16. The spring 21 is sleeved on the guide rod 17 and elastically abuts against the limiting block 16. 6; The end of the second clamping part 14 is rotatably connected to the second end of the first clamping part 13; When the first end of the lead screw 6 approaches the workpiece, during this process, the end face of the second clamping part 14 will first contact the end face of the workpiece, and gradually apply clamping force under the action of the continued rotation of the lead screw 6. At this time, the clamping column 15 moves further into the clamping groove 19 under the drive of the lead screw 6, the spring 21 is compressed and elastically abuts against the first clamping part 13, thereby driving the second clamping part 14 to continuously apply force towards the workpiece, so that the workpiece is firmly abutted against the fixed block 2. When the rotation of the lead screw 6 stops, the elastic force of the spring 21 will maintain the continuous clamping of the second clamping part 14 on the workpiece, ensuring that the workpiece can still remain stable under the action of external force.

[0034] In this embodiment, a rotating block 20 is fixed to the second end of the lead screw 6, and a polygonal rotating groove 18 is provided at the free end of the rotating block 20. The shape of the rotating groove 18 is adapted to a matching rotating tool (e.g., a wrench or a polygonal shaft), so that the user can easily rotate the lead screw 6 by inserting the rotating tool into the rotating groove 18.

[0035] In this embodiment, the rotating sleeve 11 is made of rubber; the rubber rotating sleeve 11 can absorb a certain amount of vibration and impact force, so as to further improve the stability when fixing the workpiece.

[0036] Working principle: When the user needs to fix the workpiece, firstly, the workpiece to be fixed is placed in the predetermined position between fixing block 2 and fixing block 3. Then, the position of the moving cylinder 4 is adjusted according to the size of the workpiece to ensure that the clamping space matches the size of the workpiece. During this adjustment process, the locking pin 8 will move within the moving groove 9. When the moving cylinder 4 is in the predetermined position, the moving cylinder 4 is rotated to move the locking pin 8 into the locking groove 10. At this time, the locking pin 8 is engaged in the locking groove 10, which restricts the moving cylinder 4 from moving forward or backward in the direction of fixing block 2, thereby ensuring the stability of the moving cylinder. 4. To maintain stability during processing and prevent positional movement due to vibration or other external forces, the lead screw 6 is then rotated to move along the thread direction of the moving cylinder 4, gradually bringing it into contact with the workpiece. During this process, the end face of the second clamping part 14 will first contact the end face of the workpiece, and gradually apply clamping force under the continued rotation of the lead screw 6. At this time, the clamping column 15 moves further into the clamping groove 19 under the drive of the lead screw 6, and the spring 21 is compressed and elastically abuts against the first clamping part 13, thereby driving the second clamping part 14 to continuously apply force towards the workpiece, so that the workpiece is firmly abutted against the first fixing block 2. When the rotation of the lead screw 6 stops, the elastic force of the spring 21 will maintain the continuous clamping of the second clamping part 14 on the workpiece, ensuring that the workpiece remains stable under the action of external forces. The entire fixing process utilizes the movable cylinder 4 to quickly move it to the appropriate position on the workpiece along a predetermined path, reducing the time required for manual adjustment and multiple rotations of the lead screw 6, thus improving the workpiece fixing efficiency. When the user needs to rotate the movable cylinder 4, the rotating rod 12 provides the user with a fulcrum for rotating the movable cylinder 4, facilitating the user's rotation. The shape of the rotating groove 18 is adapted to the matching rotating tool (e.g., a wrench or a polygonal shaft), making it easy for the user to insert the rotating tool into the rotating groove 18 to achieve flexible rotation of the lead screw 6. The rubber-material rotating sleeve 11 can absorb a certain amount of vibration and impact, further improving the stability when fixing the workpiece.

[0037] 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 machine tool fixing fixture, characterized in that, include: The frame (1) has two fixing blocks (2) and (3) installed at relatively intervals on the top. The movable cylinder (4) moves through the fixed block two (3), and the movable cylinder (4) is selectively fixed to the fixed block two (3) by a locking mechanism (5); A lead screw (6) passes through the movable cylinder (4) and is threadedly connected to it; And a clamping mechanism (7), located at the first end of the lead screw (6), for applying an elastic clamping force to the workpiece as the lead screw (6) rotates; The locking mechanism (5) includes a locking pin (8), a moving groove (9) is provided on the moving cylinder (4) along its length direction, and a plurality of locking grooves (10) communicating with the moving groove (9) are provided on the moving cylinder (4) at intervals along its length direction. The locking pin (8) passes through the fixed block (3) and extends into the moving groove (9). The locking pin (8) is adapted to slide in the moving groove (9) and the locking groove (10).

2. The CNC machine tool fixing fixture according to claim 1, characterized in that: The first end of the movable cylinder (4) is fixed with a rotating sleeve (11), and the rotating sleeve (11) is provided with a rotating rod (12).

3. The CNC machine tool fixing fixture according to claim 1, characterized in that: The clamping mechanism (7) includes a clamping part one (13), a clamping part two (14), a clamping column (15), a limiting block (16), a guide rod (17), and a spring (21); The clamping post (15) is fixed to the first end of the lead screw (6), and the first end of the clamping part (13) is provided with a clamping groove (19) suitable for the clamping post (15) to be inserted movably. The limiting block (16) is fixed to the free end of the clamping post (15) and is movably disposed in the clamping groove (19). The guide rod (17) is fixed in the abutment groove (19) and moves through the limiting block (16). The spring (21) is sleeved on the guide rod (17) and elastically abuts against the limiting block (16). The end of the second abutment (14) is rotatably connected to the second end of the first abutment (13).

4. The CNC machine tool fixing fixture according to claim 3, characterized in that: The second end of the lead screw (6) is fixed with a rotating block (20), and the free end of the rotating block (20) is provided with a polygonal rotating groove (18).

5. A CNC machine tool fixing fixture according to claim 2, characterized in that: The rotating sleeve (11) is made of rubber.

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