Workpiece clamping device for machining of mechanical machine tool

Abstract

The utility model relates to the technical field of clamping devices, and discloses a workpiece clamping device for machining of a mechanical machine tool, which solves the problem that the existing machine tool clamp is inconvenient to clamp and fix an inner hole end face shaft part, and comprises a supporting base and a clamping mechanism, a mounting groove is formed in the top end of the supporting base, and the clamping mechanism is arranged in the mounting groove. The clamping mechanism is connected to the interior of the mounting groove, the clamping mechanism is composed of a limiting and pressing assembly and a plurality of limiting and guiding assemblies, the limiting and pressing assembly is connected to the middle position in the mounting groove, and the limiting and guiding assemblies are fixedly connected to the inner side wall of the mounting groove and matched with the limiting and pressing assembly; by means of the workpiece clamping device, the inner hole end face shaft part can be conveniently clamped and fixed, and use convenience is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of clamping devices, in particular to a workpiece clamping device for mechanical machine tool processing. Background Art

[0002] When machining a workpiece on a machine tool, in order for the workpiece surface to meet the technical requirements of size, geometry, and relative position accuracy with other surfaces specified in the drawing, the workpiece must be installed and clamped before machining.

[0003] At present, when processing inner hole end face shaft parts, it is necessary to perform hole drilling processing inside and also to perform precise processing on the outer surface. When drilling the inner hole, it can be directly clamped and fixed by a commonly used fixture, such as a three-jaw chuck. After the inner hole processing is completed, it is difficult for conventional machine tool fixtures to extend into the inner hole to clamp and fix the inner hole end face shaft parts to achieve precise processing on their outer surface. Therefore, the present application proposes a workpiece clamping device for mechanical machine tool processing. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a workpiece clamping device for mechanical machine tool processing, which effectively solves the problem that the existing machine tool fixture is inconvenient to clamp and fix the inner hole end face shaft parts.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a workpiece clamping device for mechanical machine tool processing, comprising a support base and a clamping mechanism, the top of the support base is provided with a mounting groove, the clamping mechanism is connected to the inside of the mounting groove, the clamping mechanism is composed of a limit clamping assembly and a plurality of limit guide assemblies, the limit clamping assembly is connected to the middle position inside the mounting groove, and the limit guide assembly is fixedly connected to the inner side wall of the mounting groove and matches the limit clamping assembly.

[0006] Preferably, the limit pressing assembly is composed of a hydraulic telescopic rod, a universal joint, a mounting frame, a plurality of limit pressing arms and a plurality of movable rotating shafts. The hydraulic telescopic rod is fixedly connected to the middle position of the bottom end of the mounting groove. A reinforcement sleeve is fixedly arranged inside the mounting groove and is sleeved on the hydraulic telescopic rod. The mounting frame is movably connected to the top end of the hydraulic telescopic rod through a universal joint. The limit pressing arm is rotatably connected to the side of the mounting frame through a movable rotating shaft. A limit slot matching the limit guide assembly is provided on the limit pressing arm, and an arc-shaped pressure head is fixedly arranged on one side of the top end of the limit pressing arm.

[0007] Preferably, the limiting groove is composed of a vertical strip groove and an oblique strip groove, and the vertical strip groove and the oblique strip groove are a connected structure.

[0008] Preferably, the limit guide assembly is composed of a support plate body, a limit column, a movable limit sleeve and a bearing. The support plate body is fixedly connected to the top of the inner wall of the installation groove, the limit column is fixedly connected to one end of the side of the support plate body, and the movable limit sleeve is movably sleeved on the outer surface of the limit column through the bearing. The outer diameter of the movable limit sleeve is smaller than the inner diameter of the vertical strip groove and the oblique strip groove.

[0009] Preferably, the support base is composed of a top mounting seat, a center clamping seat and a plurality of side mounting seats, the center clamping seat is fixedly connected to the middle position of the bottom end of the top mounting seat, the side mounting seats are fixedly connected to the side edges of the bottom end of the top mounting seat, the center clamping seat is flush with the bottom surface of the side mounting seat, and the side mounting seat is provided with bolt mounting holes.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] (1) During operation, by setting a limit clamping assembly consisting of a hydraulic telescopic rod, a universal joint, a mounting frame, a plurality of limit pressure arms and a plurality of movable rotating shafts, and a limit guide assembly consisting of a support plate, a limit column, a movable limit sleeve and a bearing, the inner hole end face shaft parts can be clamped and fixed, thereby improving the convenience of use;

[0012] (2) By providing a support base consisting of a top mounting seat, a center clamping seat and a plurality of side mounting seats, the device can be directly mounted on the processing table of a machine tool, or the device can be directly clamped and fixed by the three-jaw chuck of the machine tool. Different installation methods can be selected according to needs to improve the adaptability and convenience of installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0014] In the attached picture:

[0015] Figure 1 This is a schematic diagram of the structure of a workpiece clamping device for mechanical machine tool processing of the utility model;

[0016] Figure 2 This is one of the cross-sectional views of the workpiece clamping device for mechanical machine tool processing of the utility model;

[0017] Figure 3 This is the second cross-sectional view of the workpiece clamping device for mechanical machine tool processing of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the position limiting and pressing assembly of the utility model;

[0019] Figure 5This is a schematic diagram of the structure of the limit guide assembly of the utility model;

[0020] In the figure: 1. Support base; 2. Clamping mechanism; 3. Mounting groove; 4. Limit clamping assembly; 5. Limit guide assembly; 6. Hydraulic telescopic rod; 7. Universal joint; 8. Mounting frame; 9. Limit pressure arm; 10. Movable rotating shaft; 11. Reinforcement sleeve; 12. Limit groove; 13. Arc pressure head; 14. Vertical strip groove; 15. Oblique strip groove; 16. Support plate; 17. Limit column; 18. Movable limit sleeve; 19. Bearing; 20. Top mounting seat; 21. Center clamping seat; 22. Side mounting seat; 23. Bolt mounting hole. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0022] Depend on Figures 1 to 3 The utility model provides a workpiece clamping device for mechanical machine tool processing, comprising a support base 1 and a clamping mechanism 2, a mounting groove 3 is provided at the top of the support base 1, the clamping mechanism 2 is connected to the inside of the mounting groove 3, the clamping mechanism 2 is composed of a limit clamping component 4 and a plurality of limit guide components 5, the limit clamping component 4 is connected to the middle position inside the mounting groove 3, the limit guide component 5 is fixedly connected to the inner side wall of the mounting groove 3 and matches the limit clamping component 4;

[0023] Depend on Figures 3 to 5The limiting clamping assembly 4 is composed of a hydraulic telescopic rod 6, a universal joint 7, a mounting frame 8, a plurality of limiting pressure arms 9 and a plurality of movable rotating shafts 10. The hydraulic telescopic rod 6 is fixedly connected to the middle position of the bottom end of the mounting groove 3. The mounting groove 3 is fixedly provided with a reinforcing sleeve 11 sleeved on the hydraulic telescopic rod 6. The mounting frame 8 is movably connected to the top of the hydraulic telescopic rod 6 through the universal joint 7. The limiting pressure arm 9 is rotatably connected to the side of the mounting frame 8 through the movable rotating shaft 10. The limiting pressure arm 9 is provided with a limiting groove 12 matching the limiting guide assembly 5. One side of the top of the limiting pressure arm 9 is fixedly provided with a There is an arc-shaped pressure head 13, the limiting groove 12 is composed of a vertical strip groove 14 and an oblique strip groove 15, the vertical strip groove 14 and the oblique strip groove 15 are a connected structure, the limiting guide assembly 5 is composed of a support plate body 16, a limiting column 17, a movable limiting sleeve 18 and a bearing 19, the support plate body 16 is fixedly connected to the top of the inner wall of the installation groove 3, the limiting column 17 is fixedly connected to one end of the side of the support plate body 16, the movable limiting sleeve 18 is movably sleeved on the outer surface of the limiting column 17 through the bearing 19, and the outer diameter of the movable limiting sleeve 18 is smaller than the inner diameter of the vertical strip groove 14 and the oblique strip groove 15;

[0024] When in use, after the inner hole of the inner hole end face shaft part is processed, it is placed on the top of the support base 1, the hydraulic telescopic rod 6 is contracted to drive the mounting frame 8 to move downward, and the mounting frame 8 pulls the limit pressure arm 9. At this time, the limit guide component 5 moves from the oblique strip groove 15 to the inside of the vertical strip groove 14, thereby driving the limit pressure arm 9 to swing and be in a vertical state, and the inner hole end face shaft part is clamped and fixed by the arc pressure head 13, such as Figure 2 As shown, when the outer surface of the inner hole end face shaft part is processed, the hydraulic telescopic rod 6 is extended to drive the mounting frame 8 to move upward, and the vertical strip groove 14 of the limiting guide assembly 5 moves to the inside of the oblique strip groove 15, thereby driving the limiting pressure arm 9 to swing in an inclined state, releasing the clamping effect on the inner hole end face shaft part, as shown in FIG. Figure 3 As shown, the inner hole end face shaft parts can then be removed. By providing the movable limit sleeve 18 and the bearing 19, the friction between the limit guide assembly 5 and the limit pressure arm 9 can be reduced;

[0025] Depend on Figures 1 to 3 The support base 1 is composed of a top mounting seat 20, a center clamping seat 21 and a plurality of side mounting seats 22. The center clamping seat 21 is fixedly connected to the middle position of the bottom end of the top mounting seat 20, and the side mounting seat 22 is fixedly connected to the side edge of the bottom end of the top mounting seat 20. The bottom surface of the center clamping seat 21 is flush with the bottom surface of the side mounting seat 22, and a bolt mounting hole 23 is opened on the side mounting seat 22.

[0026] If the device is directly installed on the machine tool, the side mounting seat 22 is installed on the machine tool worktable by bolts. If the device is connected to the three-jaw chuck of the machine tool, the center seat 21 is directly inserted into the three-jaw chuck and then locked by the three-jaw chuck.

[0027] During work, by setting a limit clamping assembly composed of a hydraulic telescopic rod, a universal joint, a mounting frame, a plurality of limit pressure arms and a plurality of movable rotating shafts, and a limit guide assembly composed of a support plate, a limit column, a movable limit sleeve and a bearing, it is possible to clamp and fix the inner hole end face shaft parts, thereby improving the convenience of use; by setting a supporting base composed of a top mounting seat, a center clamping seat and a plurality of side mounting seats, the device can be directly installed on the processing table of a machine tool, and can also be directly clamped and fixed by the three-jaw chuck of the machine tool. Different installation methods can be selected according to needs to improve the adaptability and convenience of installation.

Claims

1. A workpiece clamping device for machining a mechanical machine tool, comprising a support base (1) and a clamping mechanism (2), characterized in that: The top of the support base (1) is provided with a mounting groove (3), the clamping mechanism (2) is connected to the inside of the mounting groove (3), the clamping mechanism (2) is composed of a limit clamping component (4) and a plurality of limit guide components (5), the limit clamping component (4) is connected to the middle position inside the mounting groove (3), and the limit guide component (5) is fixedly connected to the inner side wall of the mounting groove (3) and matches the limit clamping component (4).

2. A workpiece clamping device for mechanical machine tool processing according to claim 1, characterized in that: The limiting and pressing assembly (4) is composed of a hydraulic telescopic rod (6), a universal joint (7), a mounting frame (8), a plurality of limiting and pressing arms (9) and a plurality of movable rotating shafts (10). The hydraulic telescopic rod (6) is fixedly connected to the middle position of the bottom end of the mounting groove (3). A reinforcing sleeve (11) sleeved on the hydraulic telescopic rod (6) is fixedly arranged inside the mounting groove (3). The mounting frame (8) is movably connected to the top end of the hydraulic telescopic rod (6) through the universal joint (7). The limiting and pressing arm (9) is rotatably connected to the side of the mounting frame (8) through the movable rotating shaft (10). A limiting groove (12) matching the limiting guide assembly (5) is provided on the limiting and pressing arm (9). An arc-shaped pressing head (13) is fixedly arranged on one side of the top end of the limiting and pressing arm (9).

3. A workpiece clamping device for mechanical machine tool processing according to claim 2, characterized in that: The limiting groove (12) is composed of a vertical strip groove (14) and an oblique strip groove (15), and the vertical strip groove (14) and the oblique strip groove (15) are in a connected structure.

4. A workpiece clamping device for mechanical machine tool processing according to claim 3, characterized in that: The limiting guide assembly (5) is composed of a support plate body (16), a limiting column (17), a movable limiting sleeve (18) and a bearing (19); the support plate body (16) is fixedly connected to the top end of the inner wall of the installation groove (3); the limiting column (17) is fixedly connected to one end of the side of the support plate body (16); the movable limiting sleeve (18) is movably sleeved on the outer surface of the limiting column (17) through the bearing (19); and the outer diameter of the movable limiting sleeve (18) is smaller than the inner diameter of the vertical strip groove (14) and the oblique strip groove (15).

5. The workpiece clamping device for mechanical machine tool processing according to claim 1, characterized in that: The support base (1) is composed of a top mounting seat (20), a center clamping seat (21) and a plurality of side mounting seats (22); the center clamping seat (21) is fixedly connected to the middle position of the bottom end of the top mounting seat (20); the side mounting seats (22) are fixedly connected to the side edges of the bottom end of the top mounting seat (20); the bottom surfaces of the center clamping seat (21) and the side mounting seat (22) are flush; and bolt mounting holes (23) are provided on the side mounting seats (22).

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