Large bottom plate surface milling and drilling clamp

Abstract

The utility model discloses a large bottom plate milling and drilling clamp which comprises a machine tool workbench, a clamp bottom plate is fixedly installed on the top of the machine tool workbench, a plurality of rotating air cylinders are fixedly connected to the edge of the top of the clamp bottom plate, and pressing plates are fixedly connected to the tops of output shafts of the rotating air cylinders. The two sides of the top of the clamp bottom plate are fixedly connected with a plurality of auxiliary positioning parts respectively, the other two sides of the top of the clamp bottom plate are fixedly provided with a Y-direction clamping air cylinder and an X-direction clamping air cylinder respectively, and output shafts of the Y-direction clamping air cylinder and the X-direction clamping air cylinder are fixedly connected with a Y-direction clamping pressing plate and an X-direction clamping pressing plate respectively. A plurality of auxiliary supporting oil cylinders are fixedly installed in the middle of the top end of the clamp bottom plate, and end face positioning blocks fixedly connected with the clamp bottom plate are arranged on the two sides of the auxiliary supporting oil cylinders respectively.

Description

Technical Field

[0001] The utility model relates to the technical field of jigs, in particular to a large bottom plate milling and drilling jig. Background Technique

[0002] A jig is a device used to fix a processing object during the mechanical manufacturing process, so that it occupies the correct position to receive construction or inspection, also known as a fixture. Generally speaking, any device used to quickly, conveniently and safely install a workpiece in any process of the technological process can be called a fixture. For example, welding jigs, inspection jigs, assembly jigs, machine tool jigs, etc. When machining a workpiece on a machine tool, in order to make the surface of the workpiece meet the technical requirements such as the dimensions, geometric shapes and mutual position accuracies with other surfaces specified in the drawing, the workpiece must be installed (positioned) and clamped firmly before machining.

[0003] The structure of the existing jig, such as the milling and drilling jig disclosed in the Chinese patent with the publication number CN217224558U, includes a baffle plate. A bottom plate is arranged below the baffle plate. A first screw is arranged on one side of the baffle plate. First shaft diameter pads are symmetrically and fixedly installed on both sides of the top wall of the bottom plate. A third shaft diameter pad is fixedly installed on the rear side of the top wall of the bottom plate. Pressing plates are symmetrically and fixedly connected to the center of the top wall of the bottom plate. A second shaft diameter pad is fixedly connected to the middle of the top wall of the baffle plate. Third screws are symmetrically arranged on the second shaft diameter pad.

[0004] When the jig is used for large bottom plate workpieces, it can only clamp the four sides. When milling the four sides of the large bottom plate workpiece, the stability is poor and the workpiece is prone to shift. Therefore, we propose a large bottom plate milling and drilling jig to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a large bottom plate milling and drilling jig to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A large bottom plate milling and drilling jig, including a machine tool workbench. A jig bottom plate is fixedly installed on the top of the machine tool workbench. A plurality of rotary cylinders are fixedly connected to the top edge of the jig bottom plate. The top of the output shaft of each rotary cylinder is fixedly connected with a pressing plate.

[0007] A plurality of auxiliary positioning parts are respectively fixedly connected to both sides of the top of the jig bottom plate. Y-direction clamping cylinders and X-direction clamping cylinders are respectively fixedly installed on the other two sides of the top of the jig bottom plate. The output shafts of the Y-direction clamping cylinder and the X-direction clamping cylinder are respectively fixedly connected with a Y-direction clamping pressing plate and an X-direction clamping pressing plate. A plurality of auxiliary support oil cylinders are respectively fixedly installed in the middle of the top end of the jig bottom plate. End face positioning blocks fixedly connected to the jig bottom plate are arranged on both sides of the auxiliary support oil cylinder.

[0008] Preferably, three end face positioning blocks are provided and distributed in a triangular structure.

[0009] Preferably, the rotary cylinders are evenly distributed along the top edge of the fixture bottom plate.

[0010] Preferably, the driving directions of the Y-direction clamping cylinder and the X-direction clamping cylinder are perpendicular to each other.

[0011] Preferably, two Y-direction clamping cylinders are symmetrically provided, and one X-direction clamping cylinder is provided.

[0012] Preferably, the auxiliary positioning portion includes two Y-direction telescopic positioning columns and one X-direction telescopic positioning column. The two Y-direction telescopic positioning columns are fixedly connected to one end of the top of the fixture bottom plate. The two Y-direction telescopic positioning columns are arranged opposite to the Y-direction clamping cylinder, and one X-direction telescopic positioning column is arranged opposite to the X-direction clamping cylinder.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: The workpiece is limited by the auxiliary positioning portion, and the large workpiece is positioned by the end face positioning block. In cooperation with multiple auxiliary support oil cylinders, the workpiece is supported to further ensure the stability of the workpiece support. Then, the workpiece is clamped and fixed by multiple rotary cylinders arranged at the edge in cooperation with the pressing plate. When milling the surface, by the operation of the rotary cylinder on one side, the pressing plate is driven to disengage from the fixation of the workpiece. At this time, the three sides of the workpiece can still be fixed by the rotary cylinder in cooperation with the pressing plate, ensuring the stability of the workpiece during milling; The Y-direction clamping pressing plate and the X-direction clamping pressing plate cooperate with the auxiliary positioning portion to clamp and fix the four sides of the workpiece. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of the present utility model;

[0015] Figure 2 is a schematic structural diagram of the present utility model when clamping the workpiece;

[0016] Figure 3 is a top view of the present utility model;

[0017] Figure 4 is a top view structural diagram of the present utility model when clamping the workpiece.

[0018] In the figure: machine tool workbench 1, fixture bottom plate 2, rotary cylinder 3, pressing plate 4, end face positioning block 5, auxiliary support oil cylinder 6, auxiliary positioning portion 7, Y-direction telescopic positioning column 71, X-direction telescopic positioning column 72, Y-direction clamping cylinder 8, Y-direction clamping pressing plate 9, X-direction clamping cylinder 10, X-direction clamping pressing plate 11, large bottom plate workpiece 12. Detailed Embodiments

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0020] Embodiment 1

[0021] Referring to Figure 1 、 2 , which is the first embodiment of the present utility model. This embodiment provides a large bottom plate milling and drilling fixture, including a machine tool workbench 1. A fixture bottom plate 2 is fixedly installed on the top of the machine tool workbench 1. A plurality of rotary cylinders 3 are fixedly connected to the top edge of the fixture bottom plate 2. The top of the output shaft of each rotary cylinder 3 is fixedly connected with a pressing plate 4.

[0022] A plurality of auxiliary positioning parts 7 are respectively fixedly connected to both sides of the top of the fixture bottom plate 2. A Y-direction clamping cylinder 8 and an X-direction clamping cylinder 10 are respectively fixedly installed on the other two sides of the top of the fixture bottom plate 2. The output shafts of the Y-direction clamping cylinder 8 and the X-direction clamping cylinder 10 are respectively fixedly connected with a Y-direction clamping pressing plate 9 and an X-direction clamping pressing plate 11. A plurality of auxiliary support oil cylinders 6 are respectively fixedly installed in the middle of the top end of the fixture bottom plate 2. End face positioning blocks 5 fixedly connected to the fixture bottom plate 2 are respectively arranged on both sides of the auxiliary support oil cylinders 6.

[0023] The large bottom plate workpiece 12 is limited by the auxiliary positioning parts 7, and positioned by the end face positioning blocks 5. In cooperation with a plurality of auxiliary support oil cylinders 6, the large bottom plate workpiece 12 is supported and further ensures the stability of the support of the large bottom plate workpiece 12. Then, a plurality of rotary cylinders 3 arranged at the edge cooperate with the pressing plates 4 to clamp and fix the top edge of the large bottom plate workpiece 12 in multiple directions. When milling the surface, the rotary cylinder 3 on one side of the large bottom plate workpiece 12 works to drive the pressing plate 4 to disengage from the fixation of one side of the large bottom plate workpiece 12. At this time, the three sides of the large bottom plate workpiece 12 can still be fixed by the rotary cylinder 3 cooperating with the pressing plate 4, ensuring the stability of the workpiece during milling. The Y-direction clamping pressing plate 9 and the X-direction clamping pressing plate 11 cooperate with the auxiliary positioning parts 7 to clamp and fix the four sides of the large bottom plate workpiece 12.

[0024] Embodiment 2

[0025] Referring to Figures 1-4 , which is the second embodiment of the present utility model. This embodiment is based on the previous embodiment. Specifically, there are three end face positioning blocks 5 and they are distributed in a triangular structure. The triangular structure distribution supports and positions the bottom of the large bottom plate workpiece 12, ensuring the positioning accuracy.

[0026] Specifically, the rotating cylinders 3 are evenly arranged at the top edge of the fixture base plate 2. By means of a plurality of rotating cylinders 3 arranged at the edge and cooperating with the pressing plates 4, the top edge of the large base plate workpiece 12 is clamped and fixed in multiple directions. During milling, when the rotating cylinder 3 on one side of the large base plate workpiece 12 works, it drives the pressing plate 4 to disengage from the fixation of one side of the large base plate workpiece 12. At this time, the three sides of the large base plate workpiece 12 can still be fixed by the rotating cylinder 3 cooperating with the pressing plate 4, ensuring the stability of the workpiece during milling.

[0027] Specifically, the driving directions of the Y-direction clamping cylinder 8 and the X-direction clamping cylinder 10 are arranged perpendicular to each other. With this perpendicular arrangement, when the Y-direction clamping cylinder 8 and the X-direction clamping cylinder 10 work, they drive the Y-direction clamping pressing plate 9 and the X-direction clamping pressing plate 11 to work. The Y-direction clamping pressing plate 9 and the X-direction clamping pressing plate 11 cooperate with the auxiliary positioning portion 7 to clamp and fix the four sides of the large base plate workpiece 12.

[0028] Specifically, there are two Y-direction clamping cylinders 8 arranged symmetrically, and one X-direction clamping cylinder 10. Further cooperating with the auxiliary positioning portion 7, six-point positioning of the four sides of the workpiece is achieved.

[0029] Specifically, the auxiliary positioning portion 7 includes two Y-direction telescopic positioning columns 71 and one X-direction telescopic positioning column 72. The two Y-direction telescopic positioning columns 71 are fixedly connected to one end of the top of the fixture base plate 2. The two Y-direction telescopic positioning columns 71 are arranged opposite to the Y-direction clamping cylinder 8, and one X-direction telescopic positioning column 72 is arranged opposite to the X-direction clamping cylinder 10. The Y-direction clamping pressing plate 9 and the X-direction clamping pressing plate 11 cooperate with the auxiliary positioning portion 7 to clamp and fix the four sides of the large base plate workpiece 12. At the same time, with six in number, six-point positioning of the large base plate workpiece 12 is achieved.

[0030] Embodiment 3

[0031] Refer to Figures 1-4 , which is the third embodiment of the present utility model. Based on the above two embodiments, during use, the large base plate workpiece 12 is limited by the auxiliary positioning portion 7, and positioned by the end face positioning block 5. In cooperation with a plurality of auxiliary support oil cylinders 6, the large base plate workpiece 12 is supported auxiliarily, further ensuring the stability of the support of the large base plate workpiece 12. Then, a plurality of rotating cylinders 3 arranged at the edge cooperate with the pressing plates 4 to clamp and fix the top edge of the large base plate workpiece 12 in multiple directions. During milling, when the rotating cylinder 3 on one side of the large base plate workpiece 12 works, it drives the pressing plate 4 to disengage from the fixation of one side of the large base plate workpiece 12. At this time, the three sides of the large base plate workpiece 12 can still be fixed by the rotating cylinder 3 cooperating with the pressing plate 4, ensuring the stability of the workpiece during milling. The Y-direction clamping pressing plate 9 and the X-direction clamping pressing plate 11 cooperate with the auxiliary positioning portion 7 to clamp and fix the four sides of the large base plate workpiece 12.

[0032] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A large base plate milling surface drilling fixture, comprising a machine tool worktable (1), characterized in that: A fixture base plate (2) is fixedly mounted on the top of the machine tool workbench (1); a plurality of rotary cylinders (3) are fixedly connected to the top edge of the fixture base plate (2); and a pressure plate (4) is fixedly connected to the top of the output shaft of each rotary cylinder (3); A plurality of auxiliary positioning parts (7) are fixedly connected to both sides of the top of the clamp base plate (2); a Y-axis clamping cylinder (8) and an X-axis clamping cylinder (10) are fixedly installed on the other two sides of the top of the clamp base plate (2); the output shafts of the Y-axis clamping cylinder (8) and the X-axis clamping cylinder (10) are fixedly connected to a Y-axis clamping plate (9) and an X-axis clamping plate (11); a plurality of auxiliary supporting oil cylinders (6) are fixedly installed in the middle of the top of the clamp base plate (2); and end surface positioning blocks (5) fixed to the clamp base plate (2) are provided on both sides of the auxiliary supporting oil cylinder (6).

2. A large base plate milling surface drilling fixture according to claim 1, characterized in that: The end face positioning blocks (5) are provided in three and are distributed in a triangular structure.

3. A large base plate milling surface drilling fixture according to claim 1, characterized in that: The rotating cylinders (3) are evenly distributed on the top edge of the clamp bottom plate (2).

4. A large base plate milling surface drilling fixture according to claim 1, characterized in that: The driving directions of the Y-direction clamping cylinder (8) and the X-direction clamping cylinder (10) are arranged perpendicular to each other.

5. The large base plate milling surface drilling fixture according to claim 1, characterized in that: The Y-direction clamping cylinders (8) are symmetrically provided with two, and the X-direction clamping cylinder (10) is provided with one.

6. The large base plate milling surface drilling fixture according to claim 1, characterized in that: The auxiliary positioning part (7) comprises two Y-direction telescopic positioning columns (71) and one X-direction telescopic positioning column (72), the two Y-direction telescopic positioning columns (71) are fixedly connected to one end of the top of the clamp base plate (2), the two Y-direction telescopic positioning columns (71) are arranged opposite to the Y-direction clamping cylinder (8), and the one X-direction telescopic positioning column (72) is arranged opposite to the X-direction clamping cylinder (10).

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