Tool clamp for machining center

Abstract

The utility model discloses a tool clamp for a machining center in the technical field of part machining, and aims to solve the problem that a special-shaped workpiece is inconvenient to clamp in the prior art. The device comprises a supporting plate, a notch is formed in the supporting plate, at least two first inserting rods are arranged on the notch in a sliding mode, the upper surfaces of the two first inserting rods are both higher than the upper surface of the supporting plate, and a driving mechanism used for driving the two first inserting rods to be close to or away from each other is arranged on the supporting plate; the special-shaped workpiece clamping device is used for clamping a special-shaped machined workpiece, can effectively guarantee the fixing effect of the special-shaped workpiece, cannot damage the fragile edge of the workpiece, and has better practical prospects.

Description

Technical Field

[0001] The utility model relates to a fixture for a machining center, belonging to the technical field of mechanical part processing. Background Art

[0002] A machining center is a high-precision mechanical processing equipment used for complex processing of materials such as metals and plastics. Its main feature is the integration of multiple processing functions, capable of automatically completing processes such as drilling, milling, turning, and tapping. Currently, the clamping of workpieces on a machining center mainly involves clamping and positioning parts through the clamping mechanism on the outside. In order to prevent the loosening of parts, a large clamping force needs to act on the workpiece. For some workpieces with special-shaped and weak edge structures, firstly, it is not convenient to stably clamp such workpieces. Secondly, even if the workpiece can be stably clamped, it is easy to cause deformation and damage to the edges after being subjected to a large clamping force. Therefore, a more reliable clamping method is urgently needed to achieve the clamping action of special-shaped workpieces. Summary of the Invention

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a fixture for a machining center, which is used for clamping special-shaped machining workpieces, can effectively ensure the fixing effect of special-shaped workpieces while not damaging the fragile edges of the workpieces, and has better practical prospects.

[0004] To achieve the above purpose, the utility model is implemented by adopting the following technical solutions:

[0005] A fixture for a machining center provided by the utility model includes a support plate. A notch is formed on the support plate. At least two first insertion rods are slidably arranged on the notch. The upper surfaces of the two first insertion rods are higher than the upper surface of the support plate. A driving mechanism for driving the two first insertion rods to approach or move away from each other is arranged on the support plate.

[0006] Specifically, first positioning plates are respectively arranged at both ends of the bottom of the support plate and located at the ends of the sliding groove. The driving mechanism includes a bidirectional lead screw rotatably arranged between the two first positioning plates. Two sliders with opposite rotation directions are respectively rotatably arranged on the bidirectional lead screw. The two first insertion rods are respectively fixedly installed on the two sliders. A rotation driving part is arranged at one end of the bidirectional lead screw.

[0007] Specifically, the rotation driving part is a knob, and a positioning mechanism for angle positioning of the bidirectional lead screw is further arranged on the support plate.

[0008] Specifically, a positioning gear is fixedly arranged at the end of the bidirectional lead screw. The positioning mechanism includes two brackets fixedly arranged on one side of the support plate. A second positioning plate is held by the two brackets. Teeth that can mesh with the positioning gear are provided below the second positioning plate. A first push plate is arranged on one side of the second positioning plate. A first threaded rod is threadedly connected to the support plate, and the end of the first threaded rod can abut against one end of the first push plate.

[0009] Specifically, a second insertion rod is arranged on the support plate at a position not on the line connecting the two first insertion rods. The second insertion rod can approach or move away from the position where the first insertion rods are located.

[0010] Specifically, a sliding plate is slidably arranged on the support plate. The upper surface of the sliding plate is flush with the upper surface of the support plate. The second insertion rod is fixedly installed on the sliding plate. A second push plate is arranged on the sliding plate. A first nut sleeve is arranged on the support plate. A second threaded rod is threadedly connected to the first nut sleeve, and the end of the second threaded rod can abut against one end of the second push plate.

[0011] Specifically, a limiting plate is arranged on the support plate. A clamping plate parallel to the limiting plate is also slidably arranged on the support plate. A third push plate is arranged below the clamping plate. A second nut sleeve is also arranged on the support plate. A third threaded rod is threadedly connected to the second nut sleeve, and the end of the third threaded rod can abut against one end of the third push plate.

[0012] Specifically, the two first insertion rods are detachably connected to the corresponding sliders, and the connection position of the first insertion rod and the corresponding slider is lower than the horizontal plane height of the support plate.

[0013] Compared with the prior art, the beneficial effects achieved by the present utility model are as follows:

[0014] By arranging the first insertion rods on the support plate that can approach or move away from each other, the present utility model can drill holes in the workpiece to be processed and position the workpiece by inserting the first insertion rods into the holes. This positioning method does not require positioning the edge of the workpiece, and the acting force for fixing the workpiece can be applied to the position on the workpiece with high structural strength, which is beneficial to the positioning of various special-shaped workpieces and is not likely to damage the fragile parts of the workpiece, having good application prospects and operability. Description of the Drawings

[0015] Figure 1 is the overall structural schematic diagram of the machining center fixture provided by the embodiment of the present utility model;

[0016] Figure 2 is the front view of the machining center fixture provided by the embodiment of the present utility model;

[0017] Figure 3 It is a side view of the machining center tooling fixture provided by the embodiment of the present utility model;

[0018] Figure 4 It is a rear view of the machining center tooling fixture provided by the embodiment of the present utility model;

[0019] Figure 5 It is a schematic diagram of the machining center tooling fixture from another angle provided by the embodiment of the present utility model;

[0020] Reference numerals: 1, support plate; 2, notch; 3, first insertion rod; 4, second insertion rod; 5, drive mechanism; 501, first positioning plate; 502, bidirectional lead screw; 503, slider; 504, rotation driving member; 505, positioning gear; 6, positioning mechanism; 601, bracket; 602, second positioning plate; 603, first push plate; 604, first threaded rod; 7, clamping plate; 8, limiting plate; 9, third push plate; 10, second nut sleeve; 11, third threaded rod; 12, sliding piece; 13, second push plate; 14, first nut sleeve; 15, second threaded rod. Detailed implementation manners

[0021] The present utility model will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present utility model and cannot be used to limit the protection scope of the present utility model.

[0022] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0023] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations. Embodiment

[0024] A fixture for a machining center provided by an embodiment of the present utility model is used for clamping a special-shaped workpiece to be machined. While effectively ensuring the fixing effect of the special-shaped workpiece, it will not damage the fragile edge of the workpiece and has a better practical prospect. To realize the structural functions of the device, it is provided here that the device includes a support plate 1 for providing a basic support surface for the workpiece to be machined. Specifically, in order to realize the clamping and fixing of the workpiece carried thereon, a notch 2 can be formed on the support plate 1, and at least two first inserting rods 3 are slidably arranged on the notch 2. Refer to Figure 1 As shown, it is provided that the upper surfaces of the two first inserting rods 3 are higher than the upper surface of the support plate 1. Before machining and clamping the parts, at least two positioning holes are drilled at least at irrelevant positions on the parts to be machined and at positions with relatively high structural strength. During clamping, the two first inserting rods 3 are adjusted to an appropriate distance and inserted into the corresponding positioning holes respectively, and then by positioning the two first inserting rods 3, the fixing work of the parts to be machined can be realized. To realize the offset of the position of the first inserting rod 3, a driving mechanism 5 for driving the two first inserting rods 3 to approach or move away from each other can be provided on the support plate 1. The positioning of the first inserting rod 3 can also be realized by the driving mechanism 5 at the same time, such as driving by a corresponding lead screw motor module, or using a worm and worm gear assembly to prevent reverse rotation, etc. Since the specific implementation methods are not unique, the specific preferred implementation methods can be referred to the following description.

[0025] A fixture for a machining center provided by an embodiment of the present utility model specifically provides a mechanism for adjusting the relative positions of the first inserting rods 3, so that the adjustment operation of the first inserting rods 3 can be made simpler. Specifically, first positioning plates 501 are respectively provided at both ends of the bottom of the support plate 1 and located at the chute, as Figure 4As shown, the driving mechanism 5 includes a bidirectional lead screw 502 rotatably arranged between two first positioning plates 501. Two sliders 503 with opposite helix directions are respectively rotatably arranged on the bidirectional lead screw 502. Two first insertion rods 3 are respectively fixedly installed on the two sliders 503. At this time, the sliding fit between the first insertion rod 3 and the notch 2 can automatically prevent the angular position deviation of the slider 503. When it is necessary to adjust the relative position between the two first insertion rods 3, the bidirectional lead screw 502 can be rotated. At this time, the two sliders 503 can adaptively approach or move away from each other, thereby driving the two first insertion rods 3 to approach or move away from each other. For the convenience of operation, a rotation driving member 504 can be arranged at one end of the bidirectional lead screw 502, such as realizing automatic control drive by connecting a motor, etc. However, for the convenience of manual operation, the rotation driving member 504 is set as a knob here. At this time, by manually controlling the rotation of the knob, the relative position distance between the two first insertion rods 3 can be simply and conveniently adjusted. However, in this way, the clamped workpiece will only be subjected to the insertion action and there is no external force support, so it is easy to deviate during processing. Therefore, as the preference of this embodiment, a positioning mechanism 6 for angle positioning the bidirectional lead screw 502 is further provided on the support plate 1.

[0026] A fixture for a machining center provided by an embodiment of the present invention specifically provides a positioning mechanism 6 for angle positioning the bidirectional lead screw 502 to make the operation more convenient. Specifically, a positioning gear 505 is fixedly arranged at the end of the bidirectional lead screw 502, and the positioning mechanism 6 is set to include two brackets 601 fixedly arranged on one side of the support plate 1, as Figure 1 shown. A second positioning plate 602 is held on the two brackets 601. Teeth that can mesh with the positioning gear 505 are provided below the second positioning plate 602. At this time, positioning the second positioning plate 602 can lock the angle of the bidirectional lead screw 502 below. To lock the second positioning plate 602, a first push plate 603 is arranged on one side of the second positioning plate 602, and a first threaded rod 604 is threadedly connected to the support plate 1. The end of the first threaded rod 604 can abut against one end of the first push plate 603. After adjusting the position distance between the first insertion rods 3, the teeth of the positioning gear 505 will stop at a fixed position. At this time, the second positioning plate 602 is loaded from above and held by the brackets 601 so that the teeth on the second positioning plate 602 can mesh with the positioning gear 505. At this time, by tightening the first threaded rod 604, after the workpiece is inserted by the first insertion rod 3, it can be clamped by the corresponding outward thrust from the inside, thereby avoiding the deviation of the workpiece and ensuring the stable positioning of the workpiece. This method has simple operation, low structural cost, good economic benefits and wide applicability.

[0027] In order to facilitate the clamping of various irregular parts, an additional clamping component can be preferably provided on the support plate 1 to improve the uniformity of the overall force and a more stable support effect. Specifically, a second plug rod 4 can be provided on the support plate 1 at a position other than the connecting line of the two first plug rods 3. Figure 1 As shown, the second plug rod 4 can be arranged to be close to or away from the position of the first plug rod 3 and fixed. In order to improve the overall flatness of the support plate 1 as much as possible, a slide plate 12 can be slidably arranged on the support plate 1, and the upper surface of the slide plate 12 is arranged to be flush with the upper surface of the support plate 1. At this time, the second plug rod 4 can be fixedly installed on the slide plate 12. In order to fix the position of the second plug rod 4, it is preferred to provide a second push plate 13 on the slide plate 12. Specifically, a first nut sleeve 14 can be provided on the support plate 1. Figure 3 As shown, the first nut sleeve 14 is threadedly connected with a second threaded rod 15, and the end of the second threaded rod 15 can abut against one end of the second push plate 13. The separate second plug rod 4 can be fixed after the position is adjusted, so the second threaded rod 15 can be directly rotated to apply corresponding thrust.

[0028] The embodiment of the utility model provides a tooling fixture for a machining center. In order to improve the overall applicability of the fixture, or to cope with the situation where it is impossible to drill a positioning hole on the workpiece, the functional part originally clamped by the outside can be integrated on the support plate 1. Specifically, a limit plate 8 can be provided on the support plate 1, such as Figure 1 and Figure 5 As shown, a clamping plate 7 parallel to the limiting plate 8 is also slidably provided on the support plate 1. When the workpiece is clamped and positioned without using the inserted rod structure, the workpiece can be positioned by using the clamping effect of the limiting plate 8 and the clamping plate 7. Specifically, in order to achieve the tightening effect of the clamping plate 7, a third push plate 9 can be provided under the clamping plate 7, and a second nut sleeve 10 is also provided on the support plate 1. A third threaded rod 11 is threadedly connected to the second nut sleeve 10, and the end of the third threaded rod 11 is capable of abutting against one end of the third push plate 9. Similarly, the clamping plate 7 can be clamped by using the thrust of the third threaded rod 11.

[0029] An embodiment of the utility model provides a tooling fixture for a machining center. Taking into account that when only the clamping plate 7 is used to clamp the workpiece, the insertion rod part may cause an impact on the placement of the workpiece. For this reason, two first insertion rods 3 can be set here, both of which can be detachably connected and set on the corresponding slider 503, and the connection position of the first insertion rod 3 and the corresponding slider 503 is set lower than the horizontal plane height of the support plate 1, so that after the first insertion rod 3 is disassembled, the connection part position of the slider 503 can be lower than the upper surface plane of the support plate 1, thereby avoiding affecting the normal placement of the workpiece.

[0030] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A fixture for a machining center, characterized in that, It includes a support plate (1), a notch (2) is formed on the support plate (1), at least two first plug rods (3) are slidably arranged on the notch (2), the upper surfaces of the two first plug rods (3) are higher than the upper surface of the support plate (1), and a driving mechanism (5) for driving the two first plug rods (3) to approach or separate from each other is arranged on the support plate (1).

2. The fixture for a machining center according to claim 1, wherein, First positioning plates (501) are respectively arranged at both ends of the bottom of the support plate (1) and located at the sliding grooves. The driving mechanism (5) includes a bidirectional screw rod (502) rotatably arranged between the two first positioning plates (501), two sliders (503) with opposite rotation directions are respectively rotatably arranged on the bidirectional screw rod (502), the two first plug rods (3) are respectively fixedly installed on the two sliders (503), and a rotation driving part (504) is arranged at one end of the bidirectional screw rod (502).

3. The fixture for a machining center according to claim 2, wherein The rotation driving part (504) is a knob, and a positioning mechanism (6) for angle positioning of the bidirectional screw rod (502) is further arranged on the support plate (1).

4. The fixture for a machining center according to claim 3, characterized in that, A positioning gear (505) is fixedly arranged at the end of the bidirectional screw rod (502). The positioning mechanism (6) includes two brackets (601) fixedly arranged on one side of the support plate (1), a second positioning plate (602) is held by the two brackets (601), teeth capable of meshing with the positioning gear (505) are formed below the second positioning plate (602), a first push plate (603) is arranged on one side of the second positioning plate (602), a first threaded rod (604) is threadedly connected to the support plate (1), and the end of the first threaded rod (604) can abut against one end of the first push plate (603).

5. The fixture for a machining center according to claim 1, characterized in that, A second plug rod (4) is arranged on the support plate (1) at a position not on the line where the two first plug rods (3) are located, and the second plug rod (4) can approach or separate from the position where the first plug rods (3) are located.

6. The fixture for a machining center according to claim 5, wherein A sliding plate (12) is slidably arranged on the support plate (1), the upper surface of the sliding plate (12) is flush with the upper surface of the support plate (1), the second plug rod (4) is fixedly installed on the sliding plate (12), a second push plate (13) is arranged on the sliding plate (12), a first nut sleeve (14) is arranged on the support plate (1), a second threaded rod (15) is threadedly connected to the first nut sleeve (14), and the end of the second threaded rod (15) can abut against one end of the second push plate (13).

7. The fixture for a machining center according to claim 1, characterized in that, A limiting plate (8) is arranged on the support plate (1), a clamping plate (7) parallel to the limiting plate (8) is further slidably arranged on the support plate (1), a third push plate (9) is arranged below the clamping plate (7), a second nut sleeve (10) is arranged on the support plate (1), a third threaded rod (11) is threadedly connected to the second nut sleeve (10), and the end of the third threaded rod (11) can abut against one end of the third push plate (9).

8. The fixture for a machining center according to claim 2, characterized in that, Both of the two first plug rods (3) are detachably connected to the corresponding sliders (503), and the connection position of the first plug rod (3) and the corresponding slider (503) is lower than the horizontal plane height of the support plate (1).

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