High-precision clamp of vertical turning and milling machine tool

Abstract

The utility model discloses a high-precision clamp of a vertical turning and milling machine tool, and belongs to the technical field of clamp devices. A high-precision clamp of a vertical turning and milling machine tool comprises a supporting table and a tool rest, the tool rest is fixed to the supporting table, a three-jaw chuck is fixedly connected to the supporting table, a clamping jaw base is connected to the three-jaw chuck in a sliding mode, and a clamping jaw body is fixedly connected to the clamping jaw base; a sliding clamping jaw and a lifting supporting block are connected to the clamping jaw body in a sliding mode, the lifting supporting block and the sliding clamping jaw synchronously move up and down, and the sliding clamping jaw is used for clamping a workpiece in advance. According to the clamping device, a workpiece can be pre-clamped, the situation that a clamping jaw clamps the hand when a worker holds the workpiece with the hand is avoided, meanwhile, the workpiece can be driven to move downwards to be aligned and attached to a table face in the clamping process, the clamping precision of the workpiece is guaranteed, and the working efficiency is improved. And the situation that errors occur during production milling due to insufficient clamping precision is avoided.

Description

Technical Field

[0001] This utility model relates to the field of clamping device technology, and in particular to a high-precision clamping device for a vertical milling and turning machine tool. Background Technology

[0002] Vertical turning and milling machine tools are machine tools that integrate turning and milling functions, and are important equipment in the modern machining field. Their technological background is mainly reflected in the demand for efficient, precise, and integrated production. With the continuous advancement of industrial technology, vertical turning and milling machine tools, with their advantages of significantly improving production efficiency, machining accuracy, and cost savings, have gradually become the preferred machining equipment for many enterprises. Employing CNC technology, they can process complex parts and molds, meeting diverse and high-precision machining needs, and driving the rapid development of the machining industry.

[0003] In existing devices, when clamping a workpiece, in order to ensure the stability of the workpiece clamping, the operator usually needs to use their hands to assist and support the workpiece until the clamp completely clamps the workpiece before releasing their hand. During this process, if the operator's attention is not focused, their hand may be injured by the clamp, which poses a safety hazard. Based on this, this utility model is proposed. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a high-precision fixture for vertical milling and turning machines that can overcome or at least partially solve the above problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A high-precision fixture for a vertical milling and turning machine includes a support table and a tool post, the tool post being fixed to the support table. The fixture also includes: a three-jaw chuck fixedly connected to the support table; a jaw base slidably connected to the three-jaw chuck; and a jaw body fixedly connected to the jaw base. A sliding jaw and a lifting support block are slidably connected to the jaw body. The lifting support block moves up and down synchronously with the sliding jaw. The sliding jaw is used to pre-clamp the workpiece. When the jaw body retracts to clamp the workpiece, the lifting support block and the sliding jaw cause the clamped workpiece to move downwards.

[0007] Preferably, a sliding connecting rod is fixedly connected to the sliding claw, the sliding connecting rod is slidably connected to the lifting support block, and a compression spring is connected between the sliding connecting rod and the lifting support block.

[0008] Preferably, a gear is rotatably connected inside the lifting support block, and a sliding toothed plate is fixedly connected to the sliding pawl, the sliding toothed plate meshing with the gear.

[0009] Furthermore, a T-shaped sliding groove is provided on the main body of the claw, and a supporting base plate is slidably connected to the T-shaped sliding groove. A tension spring is connected between the supporting base plate and the main body of the claw.

[0010] Furthermore, a lifting threaded rod is fixedly connected to the gear, and the lifting threaded rod is connected to the support base plate by threads.

[0011] Preferably, the claw body and the claw base have first mounting holes on both sides.

[0012] Preferably, a second mounting hole is provided in the middle of the claw base.

[0013] Preferably, the sliding claw has anti-slip texture.

[0014] Compared with the prior art, this utility model provides a high-precision fixture for a vertical milling and turning machine tool, which has the following advantages:

[0015] 1. This high-precision fixture for vertical milling and turning machine tools, by setting sliding jaws inside the jaw body, can replace human hands to support and stabilize the workpiece, thereby avoiding the safety hazard of the jaws pinching and injuring the hand during the support process.

[0016] 2. The high-precision fixture of this vertical milling and turning machine tool uses the squeezing of the sliding jaws to cause the sliding tooth plate to drive the gear and the lifting threaded rod to rotate. This allows the workpiece to move down and align with the table surface during the clamping process, ensuring the clamping accuracy of the workpiece and avoiding errors in production milling due to insufficient clamping accuracy.

[0017] The parts of this device not described herein are the same as or can be implemented using existing technologies. This utility model can pre-clamp the workpiece, thereby avoiding the situation where the worker's hand is pinched by the clamps while holding the workpiece by hand. At the same time, during the clamping process, it can drive the workpiece to move down and align with the table surface, ensuring the clamping accuracy of the workpiece and avoiding errors in production milling due to insufficient clamping accuracy. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a high-precision fixture for a vertical milling and turning machine tool proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the main body of the chuck in a high-precision fixture for a vertical milling and turning machine proposed in this utility model;

[0020] Figure 3 This is a cross-sectional view of the main body of the chuck in a high-precision fixture for a vertical milling and turning machine proposed in this utility model.

[0021] Figure 4 This is an exploded view of the main body of the chuck in a high-precision fixture for a vertical milling and turning machine proposed in this utility model;

[0022] Figure 5 This is a schematic diagram of the lifting support block in a high-precision fixture for a vertical milling and turning machine tool proposed in this utility model.

[0023] Figure 6 This utility model proposes a high-precision fixture for a vertical milling and turning machine. Figure 5 A magnified structural diagram of part A in the middle.

[0024] In the diagram: 1. Support platform; 11. Three-jaw chuck; 12. Tool holder; 2. Jaw body; 21. Jaw base; 22. T-shaped sliding groove; 3. Sliding jaw; 31. Sliding connecting rod; 311. Compression spring; 32. Lifting support block; 33. Sliding toothed plate; 34. Lifting threaded rod; 35. Gear; 36. Anti-slip texture; 4. Support base plate; 41. Tension spring; 5. First mounting hole; 51. Second mounting hole. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] Example 1: Refer to Figures 1-6 A high-precision fixture for a vertical milling and turning machine includes a support platform 1 and a tool holder 12. The tool holder 12 is fixed on the support platform 1. The fixture also includes: a three-jaw chuck 11 fixedly connected to the support platform 1; a jaw base 21 slidably connected to the three-jaw chuck 11; and a jaw body 2 fixedly connected to the jaw base 21. A sliding jaw 3 and a lifting support block 32 are slidably connected to the jaw body 2. The lifting support block 32 and the sliding jaw 3 move up and down synchronously. The sliding jaw 3 is used to pre-clamp the workpiece. When the jaw body 2 retracts to clamp the workpiece, the lifting support block 32 and the sliding jaw 3 drive the clamped workpiece to move down.

[0028] In this utility model, the claw base 21 is fixed on the moving block of the three-jaw chuck 11. The way to drive the moving block is divided into mechanical gear drive and pneumatic drive, both of which are existing technologies and will not be described in detail here. The claw body 2 is fixedly connected to the claw base 21, so that the three-jaw chuck 11 can drive the claw body 2 and the claw base 21 to move synchronously.

[0029] Unlike existing technologies, the sliding jaw 3 extends outward as a pre-clamping mechanism. The user can place the workpiece in the sliding jaw 3, which can clamp the workpiece by hand. As the jaw body 2 moves forward, the lifting support block 32 will move the sliding jaw 3 downward, thereby moving the workpiece downward as well. When moving downward, the bottom of the workpiece will contact the table surface of the three-jaw chuck 11, so that the workpiece can be aligned and fitted with the table surface, thus ensuring the subsequent processing accuracy.

[0030] Example 2: Refer to Figures 1-6 Similar to Embodiment 1, but further: a sliding connecting rod 31 is fixedly connected to the sliding claw 3, the sliding connecting rod 31 is slidably connected to the lifting support block 32, a compression spring 311 is connected between the sliding connecting rod 31 and the lifting support block 32, a gear 35 is rotatably connected inside the lifting support block 32, a sliding toothed plate 33 is fixedly connected to the sliding claw 3, the sliding toothed plate 33 meshes with the gear 35, a T-shaped sliding groove 22 is provided on the claw body 2, a support base plate 4 is slidably connected to the T-shaped sliding groove 22, a tension spring 41 is connected between the support base plate 4 and the claw body 2, a lifting threaded rod 34 is fixedly connected to the gear 35, the lifting threaded rod 34 is connected to the support base plate 4 by threads, a first mounting hole 5 is provided on both sides of the claw body 2 and the claw base 21, a second mounting hole 51 is provided in the middle of the claw base 21, and anti-slip texture 36 is provided on the sliding claw 3.

[0031] In this invention, when the sliding jaw 3 is not clamping the workpiece, under the action of the compression spring 311, the sliding jaw 3 is pushed to the outermost position. When the jaw body 2 drives the sliding jaw 3 to clamp the workpiece, the sliding jaw 3 is squeezed into the jaw body 2 and moves backward. The sliding jaw 3 drives the sliding tooth plate 33 to move together. The sliding tooth plate 33 drives the gear 35 to rotate. The gear 35 drives the lifting thread rod 34 to rotate, thereby reducing the distance between the lifting support block 32 and the support base plate 4. Under the action of the tension spring 41, without external force interference, the lifting support block 32 will drive the sliding jaw 3 to move down together, thereby enabling the sliding jaw 3 to drive the clamped workpiece to move down together. When the bottom surface of the workpiece contacts and adheres to the upper surface of the three-jaw chuck 11, the downward movement of the sliding jaw 3 and the lifting support block 32 is hindered. At this time, the sliding jaw 3 continues to be squeezed and moved, and the lifting thread rod 34 continues to rotate, which will drive the support base plate 4 to move up.

[0032] The main body 2 of the chuck is connected to the chuck base 21 through the first mounting holes 5 on both sides, thereby avoiding the mounting bolts from obstructing the internal transmission mechanism. The chuck base 21 is fixedly connected to the sliding mechanism on the three-jaw chuck 11 through the second mounting hole 51 in the middle. This ensures that the mounting holes correspond to the common mounting holes on the market, thereby improving the versatility of the device and allowing the chucks to be replaced according to different needs.

[0033] By setting anti-slip texture 36 on the sliding jaw 3, the friction between the sliding jaw 3 and the workpiece can be increased to prevent slippage. A guide slope is provided above the sliding jaw 3. When the workpiece size is slightly large, the sliding jaw 3 can be squeezed outward by pressing down on the workpiece and through the guide slope.

[0034] When using the device, the user first adjusts the distance between the jaw bodies 2 so that the distance between the sliding jaws 3 is slightly smaller than the size of the workpiece. Then, the user can press the workpiece down and insert it between the sliding jaws 3 to complete the pre-clamping. After that, the user can control the jaw bodies 2 to retract and clamp the workpiece. During the retraction process, the sliding jaws 3 will move the workpiece down together until the bottom surface of the workpiece is in contact with the upper surface of the three-jaw chuck 11.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-precision fixture for a vertical turning-milling machine, comprising a support table (1) and a tool holder (12) fixed to the support table (1), characterized in that, Also includes: The support table (1) is fixedly connected with three jaw chucks (11), the three jaw chucks (11) are slidably connected with jaw base (21), and the jaw base (21) is fixedly connected with jaw body (2); The jaw body (2) is slidably connected with sliding jaw (3) and lifting support block (32), the lifting support block (32) moves up and down synchronously with sliding jaw (3), and the sliding jaw (3) is used to pre-clamp workpieces; When the jaw body (2) is retracted to clamp the workpiece, the lifting support block (32) drives the clamped workpiece to move down with the sliding jaw (3).

2. The high-precision fixture for a vertical turning-milling machine according to claim 1, characterized in that, The sliding jaw (3) is fixedly connected with sliding link (31), the sliding link (31) is slidably connected with lifting support block (32), and the sliding link (31) and the lifting support block (32) are connected with compression spring (311).

3. The high-precision fixture for a vertical turning-milling machine according to claim 1, characterized in that, The lifting support block (32) is rotatably connected with gear (35), the sliding jaw (3) is fixedly connected with sliding tooth plate (33), and the sliding tooth plate (33) is engaged with gear (35).

4. The high-precision fixture for a vertical turning-milling machine according to claim 3, characterized in that, The jaw body (2) is provided with T-shaped sliding groove (22), the T-shaped sliding groove (22) is slidably connected with support bottom plate (4), and the support bottom plate (4) and the jaw body (2) are connected with tension spring (41).

5. The high-precision fixture for a vertical turning-milling machine according to claim 4, characterized in that, The gear (35) is fixedly connected with lifting threaded rod (34), and the lifting threaded rod (34) and the support bottom plate (4) are connected by threads.

6. The high-precision fixture for a vertical turning-milling machine according to claim 1, characterized in that, The two sides of the jaw body (2) and the jaw base (21) are provided with first mounting hole (5).

7. The high-precision fixture for a vertical turning-milling machine according to claim 1, characterized in that, The middle part of the jaw base (21) is provided with second mounting hole (51).

8. The high-precision fixture for a vertical turning-milling machine according to claim 1, characterized in that, The sliding jaw (3) is provided with anti-skid pattern (36).

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