A multi-functional fixture for precision CNC machine tools

Abstract

This utility model discloses a multifunctional fixture for precision CNC machine tools, applicable in the field of CNC machine tools. It includes a base with two clamping mechanisms on its top. A fixed seat is bolted to the top of each clamping mechanism, and a clamping head is slidably sleeved on the inner wall of the fixed seat. This utility model facilitates clamping head replacement by moving a toggle block to disengage the clamping rod from the clamping slot, removing the fixing pin, and then removing and replacing the clamping head. This reduces workload and improves replacement efficiency. Furthermore, by loosening the nut and rotating the bolt, the bolt moves, changing the spring force of the first spring. This allows adjustment of the preload of the first spring, improving stability and reducing the frequency of spring replacement. Removing the bolt and taking out the first spring facilitates replacement and maintenance, enhancing practicality.

Description

Technical Field

[0001] This utility model relates to the field of CNC machine tools, and in particular to a multifunctional fixture for use on precision CNC machine tools. 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, represent them with coded numbers, and input them into the CNC device through an information carrier. CNC machine tools effectively solve the problems of machining complex, precise, small-batch, and multi-variety parts. They are flexible and high-efficiency automated machine tools. In the precision CNC machine tool machining process, the fixture is the core component for workpiece positioning and clamping, and its performance directly affects machining accuracy, production efficiency, and workpiece quality.

[0003] A search of Chinese patents revealed publication number CN214212937U, a CNC machine tool fixture, relating to the field of CNC machine tool technology, includes a base. A baffle is fixedly connected to the left side of the upper surface of the base, and a second caliper is fixedly connected to the right side of the upper surface of the base. A square groove is formed in the middle of the upper surface of the base. A first caliper is placed between the baffle and the second caliper. A first square block adapted to the square groove is fixedly connected to the middle of the bottom surface of the first caliper. This CNC machine tool fixture, by setting a sliding groove, a slider, and a first spring, not only allows the first caliper to move smoothly left and right, but also uses the spring force to clamp the material. The second spring force further tightens the material, allowing the first caliper to clamp it even more firmly. By setting a disc, a third square block, a plug, and a slot, the third square block can rotate freely on the disc via a hinge.

[0004] Existing fixtures are inconvenient for changing the clamping head, and the shapes they can clamp are fixed, meaning they can only clamp workpieces of specific shapes. If different shapes of workpieces need to be clamped, the clamping head needs to be replaced. However, the clamping head is usually fixed with bolts, and replacing it requires tools for disassembly and assembly, which is cumbersome, increases workload, and reduces replacement efficiency. To solve the above problems, we propose a multi-functional fixture for precision CNC machine tools. Utility Model Content

[0005] The purpose of this invention is to provide a multi-functional clamp for precision CNC machine tools, which has the advantage of easy replacement of the clamping head.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a multi-functional fixture for a precision CNC machine tool, comprising a base, two clamping mechanisms being provided on the top of the base, a fixed seat being bolted to the top of the clamping mechanism, a clamping head being slidably sleeved on the inner wall of the fixed seat, a fixing pin being provided through the inner wall of the clamping head and the inner wall of the fixed seat, a snap-fit ​​rod being slidably sleeved on the inner wall of the fixed seat, a snap-fit ​​groove being provided on the surface of the fixing pin, and one end of the snap-fit ​​rod being snapped into the snap-fit ​​groove, a toggle block being bolted to the top of the snap-fit ​​rod, a bolt being threadedly connected to the inner wall of the fixed seat, and a first spring being provided between one end of the bolt and one end of the snap-fit ​​rod.

[0007] By adopting the above technical solution, the clamping rod is disengaged from the clamping slot by moving the toggle block, the fixing pin is removed, and the clamping head is removed and replaced. This method facilitates the replacement of the clamping head, reduces workload, and improves replacement efficiency. By loosening the nut and rotating the bolt, the bolt is moved, which changes the elastic force of the first spring, thus adjusting the preload of the first spring, improving the stability of use and the frequency of replacement of the first spring. Removing the bolt and taking out the first spring facilitates replacement of the first spring, making maintenance convenient and improving practicality.

[0008] The present invention is further configured such that: a rubber plate is slidably connected to the inner wall of the clamping head, two limiting heads are slidably sleeved on the inner wall of the rubber plate, a second spring is provided between the limiting head and the inner wall of the clamping head, and a limiting groove is formed on the inner wall of the clamping head, and the limiting groove is engaged with the limiting head.

[0009] By adopting the above technical solution, the use of a rubber plate to protect the clamping head and the workpiece improves the service life of the clamping head and avoids workpiece damage. The rubber plate is moved upward by the groove, which disengages the limiting head from the limiting groove, allowing the rubber plate to be removed for easy replacement and convenient use.

[0010] The present invention is further configured such that: the clamping mechanism includes a fixed plate, the bottom of the fixed plate is bolted to the top of the base, a cylinder is bolted to the surface of the fixed plate, a sliding block is bolted to the output end of the cylinder, and the sliding block is bolted to the bottom of the fixed base, and two guide rods are bolted to the surface of the sliding block, and the guide rods are slidably sleeved with the inner wall of the fixed plate.

[0011] By adopting the above technical solution, a clamping mechanism is set up, and the cylinder drives the sliding block to move the clamping head to clamp the workpiece, which facilitates assembly and disassembly and improves processing efficiency.

[0012] The present invention is further configured such that a nut is threaded onto the surface of the bolt.

[0013] By adopting the above technical solution, the bolts are fixed by setting nuts, thereby improving stability.

[0014] The present invention is further configured such that one end of the snap-fit ​​rod is wedge-shaped.

[0015] By adopting the above technical solution, one end of the locking rod is wedge-shaped, which facilitates the fixing of the fixing pin.

[0016] The present invention is further configured such that the surface of the actuating block is integrally formed with protrusions.

[0017] By adopting the above technical solution, protrusions are set to prevent hand slippage and facilitate the movement of the toggle block.

[0018] The present invention is further configured such that one end of the limiting head is arc-shaped.

[0019] By adopting the above technical solution, one end of the limiting head is set to be arc-shaped, which facilitates the installation and removal of the rubber plate.

[0020] The present invention is further configured such that a groove is provided at the bottom of the rubber sheet.

[0021] By adopting the above technical solution, grooves are provided to facilitate the disassembly of the rubber sheet.

[0022] In summary, this utility model has the following beneficial effects: 1. This utility model achieves the purpose of conveniently replacing the clamping head by moving the toggle block to disengage the clamping rod from the clamping groove, removing the fixing pin, and replacing the clamping head. This reduces the workload and improves the efficiency of replacement. 2. This utility model allows for the adjustment of the preload of the first spring by loosening the nut and rotating the bolt to move the bolt. The movement of the bolt changes the elastic force of the first spring, thereby improving the stability of use and the frequency of replacement of the first spring. The bolt can be removed to facilitate the replacement of the first spring, making maintenance convenient and improving its practicality.

[0023] 3. This utility model improves the service life of the clamping head and avoids workpiece damage by setting a rubber plate to protect the clamping head and workpiece. The rubber plate is moved upward by the groove, so that the limiting head is disengaged from the limiting groove and the rubber plate can be removed for easy replacement and convenient use. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural view of the present invention; Figure 2 This is a partial three-dimensional cross-sectional view of the structure of this utility model; Figure 3 This is a partial three-dimensional cross-sectional view of the structure of this utility model; Figure 4 This is a utility model Figure 3Enlarged view of the structure at point A in the middle.

[0025] Reference numerals in the attached drawings: 1. Base; 2. Clamping mechanism; 3. Fixed seat; 4. Clamping head; 5. Fixing pin; 6. Snap-fit ​​rod; 7. Snap-fit ​​groove; 8. Actuating block; 9. Bolt; 10. First spring; 11. Rubber plate; 12. Limiting head; 13. Second spring; 14. Limiting groove; 15. Fixed plate; 16. Cylinder; 17. Sliding block; 18. Guide rod; 19. Nut; 20. Protrusion; 21. Groove. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings.

[0027] Example 1: refer to Figure 1 and Figure 2 A multi-functional fixture for precision CNC machine tools includes a base 1. Two clamping mechanisms 2 are mounted on the top of the base 1. A fixed seat 3 is bolted to the top of each clamping mechanism 2. A clamping head 4 is slidably sleeved on the inner wall of the fixed seat 3. A fixing pin 5 penetrates the inner wall of the clamping head 4 and the inner wall of the fixed seat 3. A locking rod 6 is slidably sleeved on the inner wall of the fixed seat 3. A locking groove 7 is formed on the surface of the fixing pin 5, and one end of the locking rod 6 engages with the locking groove 7. A toggle block 8 is bolted to the top of the locking rod 6. A bolt 9 is threaded onto the inner wall of the fixed seat 3. A first bolt is positioned between one end of the bolt and one end of the locking rod 6. A spring 10 can be replaced by moving the toggle block 8 to disengage the locking rod 6 from the locking groove 7, removing the fixing pin 5, and then removing the clamping head 4 for replacement. This method facilitates the replacement of the clamping head 4, reduces workload, and improves replacement efficiency. By loosening the nut 19 and rotating the bolt 9, the elastic force of the first spring 10 can be changed, which can adjust the preload of the first spring 10, improve the stability of use, and reduce the replacement frequency of the first spring 10. Removing the bolt 9 and taking out the first spring 10 facilitates replacement of the first spring 10, making maintenance convenient and improving practicality.

[0028] refer to Figure 1 The clamping mechanism 2 includes a fixed plate 15, the bottom of which is bolted to the top of the base 1. A cylinder 16 is bolted to the surface of the fixed plate 15, and a sliding block 17 is bolted to the output end of the cylinder 16. The sliding block 17 is bolted to the bottom of the fixed base 3. Two guide rods 18 are bolted to the surface of the sliding block 17, and the guide rods 18 are slidably sleeved with the inner wall of the fixed plate 15. By setting the clamping mechanism 2, the cylinder 16 drives the sliding block 17 to move the clamping head 4, clamping the workpiece, which is convenient for assembly and disassembly and improves processing efficiency.

[0029] refer to Figure 1 and Figure 2The bolt 9 has a nut 19 threaded on its surface. By setting the nut 19, the bolt 9 is fixed and its stability is improved.

[0030] refer to Figure 2 One end of the locking rod 6 is wedge-shaped, which facilitates the fixing of the fixing pin 5.

[0031] refer to Figure 1 The surface of the toggle block 8 is integrally formed with protrusions 20. By setting the protrusions 20, the hand slips and the toggle block 8 is moved easily.

[0032] Example 2: refer to Figure 3 and Figure 4 A rubber plate 11 is slidably connected to the inner wall of the clamping head 4. Two limiting heads 12 are slidably sleeved on the inner wall of the rubber plate 11. A second spring 13 is provided between the limiting head 12 and the inner wall of the clamping head 4. A limiting groove 14 is opened on the inner wall of the clamping head 4, and the limiting groove 14 is engaged with the limiting head 12. By setting the rubber plate 11 to protect the clamping head 4 and the workpiece, the service life of the clamping head 4 is improved and the workpiece is prevented from being damaged. The rubber plate 11 is moved upward through the groove 21, so that the limiting head 12 is disengaged from the limiting groove 14 and the rubber plate 11 can be removed for easy replacement and convenient use.

[0033] refer to Figure 4 One end of the limiting head 12 is arc-shaped, which facilitates the installation and removal of the rubber plate 11.

[0034] refer to Figure 1 The bottom of the rubber sheet 11 is provided with a groove 21, which facilitates the disassembly of the rubber sheet 11.

[0035] Brief description of the usage process: Move the toggle block 8. The movement of the toggle block 8 moves the locking rod 6. The movement of the locking rod 6 disengages it from the locking groove 7. Remove the fixing pin 5 and the clamping head 4. Insert the new clamping head 4 into the fixing base 3. Insert the fixing pin 5. Under the action of the first spring 10, the locking rod 6 engages with the locking groove 7, fixing it in place. This completes the replacement, thus facilitating the replacement of the clamping head 4. Loosen the nut 19 and rotate the bolt 9. The rotation of the bolt 9 moves the bolt 9, causing the first spring 10 to engage with the locking groove 7. The change in the elastic force of spring 10 can adjust the preload of the first spring 10. Bolt 9 can be removed and the first spring 10 can be taken out for easy replacement. Rubber plate 11 protects clamping head 4 and workpiece. Rubber plate 11 is moved upward through groove 21 to disengage the limiting head 12 from the limiting groove 14. Rubber plate 11 is removed and a new rubber plate 11 is installed in clamping head 4. Under the action of the second spring 13, the limiting head 12 is engaged with the limiting hole and fixed, thereby achieving the purpose of replacing rubber plate 11.

[0036] It should be noted that parts have a lifespan and can be replaced during regular maintenance when they no longer meet performance requirements. Deterioration in performance due to prolonged use of parts is not a design defect of this application.

[0037] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A multifunctional fixture for a precision CNC machine tool, comprising a base (1), characterized in that, The base (1) has two clamping mechanisms (2) on its top. A fixed seat (3) is bolted to the top of the clamping mechanism (2). A clamping head (4) is slidably sleeved on the inner wall of the fixed seat (3). A fixing pin (5) is provided through the inner wall of the clamping head (4) and the inner wall of the fixed seat (3). A snap-fit ​​rod (6) is slidably sleeved on the inner wall of the fixed seat (3). A snap-fit ​​groove (7) is provided on the surface of the fixing pin (5). One end of the snap-fit ​​rod (6) is snapped into the snap-fit ​​groove (7). A toggle block (8) is bolted to the top of the snap-fit ​​rod (6). A bolt (9) is threadedly connected to the inner wall of the fixed seat (3). A first spring (10) is provided between one end of the bolt and one end of the snap-fit ​​rod (6).

2. A multifunctional fixture for a precision CNC machine tool according to claim 1, characterized in that, The inner wall of the clamping head (4) is slidably connected to a rubber plate (11), and the inner wall of the rubber plate (11) is slidably sleeved with two limiting heads (12). A second spring (13) is provided between the limiting head (12) and the inner wall of the clamping head (4). The inner wall of the clamping head (4) is provided with a limiting groove (14), and the limiting groove (14) is engaged with the limiting head (12).

3. A multifunctional fixture for a precision CNC machine tool according to claim 1, characterized in that, The clamping mechanism (2) includes a fixed plate (15), the bottom of the fixed plate (15) is bolted to the top of the base (1), a cylinder (16) is bolted to the surface of the fixed plate (15), a sliding block (17) is bolted to the output end of the cylinder (16), and the sliding block (17) is bolted to the bottom of the fixed seat (3). Two guide rods (18) are bolted to the surface of the sliding block (17), and the guide rods (18) are slidably sleeved with the inner wall of the fixed plate (15).

4. A multifunctional fixture for a precision CNC machine tool according to claim 1, characterized in that, The bolt (9) has a nut (19) threaded onto its surface.

5. A multifunctional fixture for a precision CNC machine tool according to claim 1, characterized in that, One end of the snap-fit ​​rod (6) is wedge-shaped.

6. A multifunctional fixture for a precision CNC machine tool according to claim 1, characterized in that, The surface of the actuating block (8) is integrally formed with protrusions (20).

7. A multifunctional fixture for a precision CNC machine tool according to claim 2, characterized in that, One end of the limiting head (12) is arc-shaped.

8. A multifunctional fixture for a precision CNC machine tool according to claim 2, characterized in that, The bottom of the rubber sheet (11) is provided with a groove (21).

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