Clamp tool suitable for vertical numerical control machining center

Abstract

The utility model discloses a clamp tool suitable for a vertical numerical control machining center, which comprises a bottom plate, and a fixed clamping mechanism, a movable clamping mechanism, a first V-shaped female seat, a first chain locking seat and a first chain adjusting seat which are arranged on the bottom plate and connected to the bottom plate, the two ends of the first chain are connected to the first chain locking base and the first chain adjusting base through first pressing screws and first adjusting clamping plates respectively, the second V-shaped female base, the second chain locking base and the second chain adjusting base are connected to a sliding plate, and a sliding block is arranged at the bottom of the sliding plate and slidably connected to a sliding rail on the surface of the bottom plate. The two ends of the second chain are connected to the second chain locking base and the second chain adjusting base through a second pressing screw and a second adjusting clamping plate respectively. According to the tool, self-centering and rapid turning-over can be achieved when the vertical machining center machines shaft parts, and the purposes of canceling manual part correction, preventing the parts from moving in the machining process and rapidly turning-over the parts are achieved through the tool.

Description

Technical Field

[0001] This utility model relates to the technical field, and in particular to a fixture suitable for vertical CNC machining centers. Background Technology

[0002] A vertical CNC machining center is a multi-functional CNC machine tool equipped with a tool magazine and automatic tool changer. It features a vertical spindle layout and is suitable for machining complex parts such as plates and small housings. When a vertical CNC machining center is used to machine shaft parts, especially keyways, the variety of part sizes and frequent changes in machining require constant adjustments to the clamping range and changes to the fixtures, thus increasing changeover time. Furthermore, each part requires manual calibration, which takes considerable time, resulting in low output regardless of batch or single-piece machining modes. Existing vertical CNC machining center shaft fixtures are assembled from components such as pressure plates, V-bolts, screws, and nuts. The part is suspended on the V-bolt and secured to the pressure plate by the screws and nuts. This method only uses one side of the pressure plate to clamp the part, leading to low clamping efficiency, requiring multiple reciprocating adjustments, and resulting in long and tedious calibration times. Additionally, because only one side is secured, the part is prone to shifting, easily leading to defective products. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by providing a fixture suitable for vertical CNC machining centers, thereby eliminating the need for manual correction of parts, preventing parts from shifting during machining, and enabling rapid flipping of parts.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0005] A fixture for a vertical CNC machining center, characterized in that it includes a base plate, and a fixed clamping mechanism and a movable clamping mechanism disposed on the base plate. The fixed clamping mechanism includes a first V-shaped female seat, a first chain, a first chain locking seat, and a first chain adjusting seat. The first V-shaped female seat, the first chain locking seat, and the first chain adjusting seat are connected to the base plate. The first chain locking seat and the first chain adjusting seat are respectively located on both sides of the first V-shaped female seat. The two ends of the first chain are respectively connected to the first chain locking seat and the first chain adjusting seat through a first clamping screw and a first adjusting plate. On a chain adjusting seat, the movable clamping mechanism includes a second V-shaped female seat, a second chain, a second chain locking seat, a second chain adjusting seat, and a sliding plate. The second V-shaped female seat, the second chain locking seat, and the second chain adjusting seat are connected to the sliding plate. The second chain locking seat and the second chain adjusting seat are located on both sides of the second V-shaped female seat. A slider is provided at the bottom of the sliding plate. The slider is slidably connected to a slide rail on the surface of the base plate. The two ends of the second chain are respectively connected to the second chain locking seat and the second chain adjusting seat through a second clamping screw and a second adjusting plate.

[0006] Furthermore, the upper surfaces of the first and second V-shaped female seats are connected to replaceable pads to accommodate parts of different sizes.

[0007] Furthermore, the first adjusting plate includes a first fixed end and a first pin hole. The first fixed end can be engaged with the first chain, and the first pin hole is provided with a first pin connected to the first chain adjusting seat.

[0008] Furthermore, the second adjusting plate includes a second fixed end and a second pin hole. The second fixed end can be engaged with the second chain, and the second pin hole is provided with a second pin connected to the second chain adjusting seat.

[0009] Furthermore, the sliding plate is provided with locking screw holes for fixing the relative position of the sliding plate and the base plate.

[0010] Furthermore, it also includes a fixed flipping mechanism and a movable flipping mechanism. The fixed flipping mechanism includes a first V-shaped block, the lower end of which is connected to the base plate, and a plurality of first rollers are provided on the upper end of the first V-shaped block. The movable flipping mechanism includes a second V-shaped block, the lower end of which is connected to the sliding plate, and a plurality of second rollers are provided on the upper end of the second V-shaped block.

[0011] Furthermore, it also includes a first lifting seat disposed on the base plate and a second lifting seat disposed on the sliding plate, wherein the lower end of the first V-block is slidably connected to the first lifting seat, and the lower end of the second V-block is slidably connected to the second lifting seat.

[0012] Furthermore, a first hydraulic cylinder is provided between the base plate and the first V-block for lifting the first V-block, and a second hydraulic cylinder is provided between the sliding plate and the second V-block for lifting the second V-block.

[0013] Furthermore, the lifting pressure range of the first and second hydraulic cylinders is 1 to 7 MPa.

[0014] Furthermore, an axial positioning seat is provided on the base plate, and the axial positioning seat is located on the rear side of the fixed clamping mechanism.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. The innovative design utilizes a chain and V-shaped female seat instead of a conventional flat clamp, optimizing the clamping method from single-point linear pressing to a more effective multi-point angular envelope clamping, thus solving the problem of workpiece movement during processing. Furthermore, the chain length can be adjusted according to the workpiece model, thereby improving applicability.

[0017] 2. By combining hydraulic technology with rollers, the traditional method of manually flipping workpieces is replaced, thus improving the efficiency of part flipping.

[0018] 3. The movable clamping mechanism is designed with guide rails and sliders, which can move and adjust the length along the axis to accommodate the processing of parts of different lengths.

[0019] Other features and advantages of this invention will be set forth in the following description or may be learned by practicing this invention. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the overall structure of an embodiment of the present utility model. Figure 2 ;

[0022] Figure 3 This is a schematic diagram of the first adjusting plate structure;

[0023] Figure 4 This is a diagram showing the clamping state of the part.

[0024] In the diagram: 1-base plate, 2-first V-shaped female seat, 3-first chain, 4-first chain locking seat, 5-first chain adjusting seat, 6-first clamping screw, 7-first adjusting plate, 8-second V-shaped female seat, 9-second chain, 10-second chain locking seat, 11-second chain adjusting seat, 12-sliding plate, 13-slider, 14-slide rail, 15-second clamping screw, 16-second adjusting plate, 17-pad block, 18-part, 19-first pin, 20-second pin, 21-locking screw hole, 22-first V-block, 23-first roller, 24-second V-block, 25-second roller, 26-first lifting seat, 27-second lifting seat, 28-first hydraulic cylinder, 29-second hydraulic cylinder, 30-axial positioning seat, 71-first fixed end, 72-first pin hole. Detailed Implementation

[0025] To enhance understanding of this utility model, we will now describe it in further detail with reference to the accompanying drawings. This embodiment is only used to explain this utility model and does not constitute a limitation on the scope of protection of this utility model.

[0026] like Figure 1-3 As shown, a fixture suitable for a vertical CNC machining center includes a base plate 1, and a fixed clamping mechanism and a movable clamping mechanism disposed on the base plate 1. The fixed clamping mechanism includes a first V-shaped female seat 2, a first chain 3, a first chain locking seat 4, and a first chain adjusting seat 5. The first V-shaped female seat 2, the first chain locking seat 4, and the first chain adjusting seat 5 are connected to the base plate 1. The first chain locking seat 4 and the first chain adjusting seat 5 are respectively located on both sides of the first V-shaped female seat 2. The two ends of the first chain 3 are respectively connected to the first chain locking seat 4 and the first chain adjusting seat 5 through a first clamping screw 6 and a first adjusting plate 7.

[0027] The movable clamping mechanism includes a second V-shaped female seat 8, a second chain 9, a second chain locking seat 10, a second chain adjusting seat 11, and a sliding plate 12. The second V-shaped female seat 8, the second chain locking seat 10, and the second chain adjusting seat 11 are connected to the sliding plate 12. The second chain locking seat 10 and the second chain adjusting seat 11 are located on both sides of the second V-shaped female seat 8, respectively. A slider 13 is provided at the bottom of the sliding plate 12. The slider 13 is slidably connected to the slide rail 14 on the surface of the base plate 1. The two ends of the second chain 9 are connected to the second chain locking seat 10 and the second chain adjusting seat 11, respectively, through a second clamping screw 15 and a second adjusting plate 16.

[0028] like Figure 3The first adjusting plate 7 includes a first fixed end 71 and a first pin hole 72. The first fixed end 71 can be engaged with the first chain 3, and the first pin hole 72 is provided with a first pin 19 connected to the first chain adjusting seat 5. Similar to the first adjusting plate, the second adjusting plate 16 includes a second fixed end and a second pin hole. The second fixed end can be engaged with the second chain 9, and the second pin hole is provided with a second pin 20 connected to the second chain adjusting seat 11.

[0029] Between the fixed clamping mechanism and the movable clamping mechanism, there are also a fixed flipping mechanism and a movable flipping mechanism. The fixed flipping mechanism includes a first V-block 22 and a first lifting seat 26. The first lifting seat 26 is disposed on the base plate 1. The lower end of the first V-block 22 is slidably connected to the first lifting seat 26. The upper end of the first V-block 22 is provided with a plurality of first rollers 23.

[0030] The moving and flipping mechanism includes a second V-shaped block 24 and a second lifting seat 27. The second lifting seat 27 is disposed on the sliding plate 12. The lower end of the second V-shaped block 24 is slidably connected to the second lifting seat 27. The upper end of the second V-shaped block 24 is provided with a plurality of second rollers 25.

[0031] A first hydraulic cylinder 28 is provided between the base plate 1 and the first V-block 22 for lifting the first V-block 22, and a second hydraulic cylinder 29 is provided between the sliding plate 12 and the second V-block 24 for lifting the second V-block 24. The lifting pressure range of the first hydraulic cylinder 28 and the second hydraulic cylinder 29 is 1 to 7 MPa.

[0032] The upper surfaces of the first V-shaped female seat 2 and the second V-shaped female seat 8 are connected to replaceable pads 17 to accommodate parts 18 of different sizes. The sliding plate 12 is provided with locking screw holes 21 to fix the relative position of the sliding plate 12 and the base plate 1. An axial positioning seat 30 is provided on the base plate 1, located on the rear side of the fixed clamping mechanism, for axial positioning and limiting of the part 18.

[0033] The working process and principle of the above embodiments are as follows:

[0034] like Figure 4As shown, firstly, adjust the distance between the fixed clamping mechanism and the moving clamping mechanism according to the length of the part 18 to be processed, allowing the sliding plate 12 to move along the slide rail 14. After reaching the corresponding position, fix the relative position of the sliding plate 12 and the base plate 1 through the locking screw hole 21, so that the moving clamping mechanism no longer moves. Then, replace the pad 17 with one of appropriate thickness according to the diameter of the part 18, place the part 18 on the first V-shaped female seat 2 and the second V-shaped female seat 8, adjust the first chain 3 and the second chain 9 to the appropriate length, and then insert one end of each chain into the first adjusting plate 7 and the second adjusting plate 16 respectively, and fix them with the first pin 19 and the second pin 20. Tighten the first clamping screw 6 and the second clamping screw 15 to fix the other end of the first chain 3 and the second chain 9. After adopting the clamping structure of chain and V-shaped seat, the single-point linear clamping is optimized to a more effective multi-point angle envelope clamping method, solving the problem of part movement during processing. Moreover, the length of the chain can be adjusted according to the model of the part, thereby improving applicability.

[0035] After one side of part 18 is machined, the first hydraulic cylinder 28 and the second hydraulic cylinder 29 are activated to lift the first lifting seat 26 and the second lifting seat 27 respectively. The first roller 23 and the second roller 25 then rest against part 18, and the first roller 23 and the second roller 25 begin to rotate, thereby causing part 18 to rotate as well, completing the flipping of part 18. After flipping, the first lifting seat 26 and the second lifting seat 27 are lowered. By using a combination of hydraulic cylinders and rollers, the traditional manual method of flipping the workpiece is replaced, improving the efficiency of part flipping.

[0036] The above specific embodiments are only for illustrating the technical concept and structural features of this utility model, and are intended to enable those skilled in the art to implement them. However, the above content does not limit the protection scope of this utility model. Any equivalent changes or modifications made in accordance with the spirit and essence of this utility model shall fall within the protection scope of this utility model.

Claims

1. A fixture suitable for vertical CNC machining centers, characterized in that: The system includes a base plate (1) and a fixed clamping mechanism and a movable clamping mechanism mounted on the base plate (1). The fixed clamping mechanism includes a first V-shaped female seat (2), a first chain (3), a first chain locking seat (4), and a first chain adjusting seat (5). The first V-shaped female seat (2), the first chain locking seat (4), and the first chain adjusting seat (5) are connected to the base plate (1). The first chain locking seat (4) and the first chain adjusting seat (5) are located on both sides of the first V-shaped female seat (2). The two ends of the first chain (3) are connected to the first chain locking seat (4) and the first chain adjusting seat (5) respectively through a first clamping screw (6) and a first adjusting plate (7). The movable clamping mechanism includes a second V-shaped female seat (8). The second chain (9), the second chain locking seat (10), the second chain adjusting seat (11), and the sliding plate (12) are connected to the sliding plate (12). The second V-shaped female seat (8), the second chain locking seat (10), and the second chain adjusting seat (11) are respectively located on both sides of the second V-shaped female seat (8). The bottom of the sliding plate (12) is provided with a slider (13). The slider (13) is slidably connected to the slide rail (14) on the surface of the base plate (1). The two ends of the second chain (9) are respectively connected to the second chain locking seat (10) and the second chain adjusting seat (11) through the second clamping screw (15) and the second adjusting plate (16).

2. The fixture and tooling suitable for vertical CNC machining centers according to claim 1, characterized in that: The upper surfaces of the first V-shaped female seat (2) and the second V-shaped female seat (8) are connected to pads (17) with replaceable thickness to accommodate parts (18) of different sizes.

3. The fixture and tooling suitable for vertical CNC machining centers according to claim 1, characterized in that: The first adjusting plate (7) includes a first fixed end (71) and a first pin hole (72). The first fixed end (71) can be engaged with the first chain (3). The first pin hole (72) is provided with a first pin (19) connected to the first chain adjusting seat (5).

4. The fixture and tooling suitable for vertical CNC machining centers according to claim 1, characterized in that: The second adjusting plate (16) includes a second fixed end and a second pin hole. The second fixed end can be engaged with the second chain (9). The second pin hole is provided with a second pin (20) connected to the second chain adjusting seat (11).

5. The fixture and tooling suitable for vertical CNC machining centers according to claim 1, characterized in that: The sliding plate (12) is provided with locking screw holes (21) for fixing the relative position of the sliding plate (12) and the base plate (1).

6. A fixture for a vertical CNC machining center according to any one of claims 1-5, characterized in that: It also includes a fixed flipping mechanism and a movable flipping mechanism. The fixed flipping mechanism includes a first V-shaped block (22), the lower end of which is connected to the base plate (1), and the upper end of which is provided with a plurality of first rollers (23). The movable flipping mechanism includes a second V-shaped block (24), the lower end of which is connected to the sliding plate (12), and the upper end of which is provided with a plurality of second rollers (25).

7. The fixture tooling suitable for vertical CNC machining centers according to claim 6, characterized in that: It also includes a first lifting seat (26) set on the base plate (1) and a second lifting seat (27) set on the sliding plate (12). The lower end of the first V-block (22) is slidably connected to the first lifting seat (26), and the lower end of the second V-block (24) is slidably connected to the second lifting seat (27).

8. The fixture tooling suitable for vertical CNC machining centers according to claim 7, characterized in that: A first hydraulic cylinder (28) is provided between the base plate (1) and the first V-block (22) for lifting the first V-block (22), and a second hydraulic cylinder (29) is provided between the sliding plate (12) and the second V-block (24) for lifting the second V-block (24).

9. A fixture for a vertical CNC machining center according to claim 8, characterized in that: The lifting pressure range of the first oil cylinder (28) and the second oil cylinder (29) is 1~7Mpa.

10. The fixture and tooling suitable for vertical CNC machining centers according to claim 1, characterized in that: An axial positioning seat (30) is provided on the base plate (1), and the axial positioning seat (30) is located on the rear side of the fixed clamping mechanism.

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