Lightweight machining clamping device for cross-scale space reflector

Abstract

The invention discloses a lightweight machining clamping device for a cross-scale space reflector. The lightweight machining clamping device comprises a workbench and a positioning base arranged on the workbench. The sucking disc is mounted on the positioning base; the side positioning plate and the front positioning plate are connected to the upper end of the sucker; and the flexible universal jacking and clamping mechanisms are arranged in the transverse direction and the longitudinal direction of the suction cup correspondingly, and the flexible universal jacking and clamping mechanisms can slide on the suction cup so as to assist in clamping the reflectors with different calibers. By arranging the flexible universal jacking and clamping mechanism, clamping of a cross-scale reflector can be achieved, the clamping requirements of reflectors with different sizes and the length range of 0.1-0.8 m and the width range of 0.1-0.5 m can be met, and multi-feature high-precision machining and clamping of planes, outer contours, supporting holes, weight reduction cavities and mirror faces of the reflectors can be achieved; and a combined clamping mode of peripheral top clamping can realize high-efficiency and high-stability clamping of the reflecting mirror.

Description

Technical Field

[0001] The present invention relates to the technical field of precision machining of space mirrors, and in particular to a lightweight machining and clamping device for a cross-scale space mirror. Background Art

[0002] High-precision reflectors are a key optical component commonly used in space optical systems. Their performance directly affects the imaging quality of remote sensing satellites, so the processing of reflectors is particularly important. However, most reflectors are made of hard and brittle materials such as silicon carbide and microcrystalline glass, which are difficult to process and have a long cycle, so they often need to be equipped with appropriate processing and clamping devices.

[0003] At present, the commonly used clamping device for lightweight processing of reflectors is a special tooling, which can only be used for a certain type of reflector. The flexibility of the equipment is low. In addition, it requires additional assistance of paraffin or asphalt, which greatly reduces the processing efficiency and stability of the reflector, and increases the processing cost.

[0004] Based on the above technical problems, technicians in this field urgently need to develop a lightweight processing and clamping device for cross-scale space mirrors, which can improve universality, processing efficiency and stability, reduce production costs, and benefit the mass processing of mirrors. Summary of the invention

[0005] The purpose of the present invention is to provide a solution to the problems of low clamping efficiency and poor stability during the processing of features such as the plane, outer contour, support hole, weight reduction cavity and mirror surface of a space reflector, and to provide a lightweight processing and clamping device for a cross-scale space reflector.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A lightweight processing clamping device for a cross-scale space reflector of the present invention comprises:

[0008] Workbench; and

[0009] A positioning base arranged on the workbench;

[0010] A suction cup mounted on the positioning base, wherein the relative position of the suction cup and the workbench is positioned by the positioning base, and the upper surface of the suction cup can generate negative pressure to uniformly adsorb the reflector;

[0011] A side positioning plate and a front positioning plate connected to the upper end of the suction cup, wherein the side positioning plate and the front positioning plate are in contact with two side surfaces of the reflector respectively and provide a direction positioning for the reflector respectively;

[0012] The clamping device also includes:

[0013] A plurality of flexible universal top clamping mechanisms are respectively arranged along the transverse direction and the longitudinal direction of the suction cup, and the flexible universal top clamping mechanisms can slide on the suction cup to assist in clamping reflectors of different calibers.

[0014] Furthermore, the reflector includes a reflector surface, a reflector reference surface is formed on the reflector surface, and a weight reduction cavity is opened on the reflector reference surface;

[0015] Three reflector support blocks disposed on the reflector reference plane and arranged in a triangle;

[0016] The outer circumference of the reflector forms an outer contour of the reflector.

[0017] Furthermore, the upper surface of the positioning base forms a positioning base reference surface, and the positioning base reference surface is provided with four positioning pins symmetrically distributed in pairs to provide positioning for the suction cup;

[0018] The positioning base is provided with a plurality of mounting holes for connecting to the workbench.

[0019] Furthermore, the suction cup is provided with a positioning sleeve, which cooperates with the positioning base for positioning, and is connected to the positioning base through a fastening bolt; and

[0020] The suction cup is respectively formed with an upper suction cup plane and a lower suction cup plane, the upper suction cup plane is in contact with the bottom surface of the reflector, and the lower suction cup plane is in contact with the positioning base;

[0021] The suction cup is provided with a plurality of T-slots and a plurality of air extraction holes arranged in a horizontal and vertical direction, the T-slots are used for the flexible universal top clamping mechanism to slide, and the plurality of air extraction holes can generate negative pressure to uniformly adsorb the reflector.

[0022] Furthermore, the side positioning plate includes a first side vertical reference plane and a first horizontal reference plane, the first horizontal reference plane is connected to the suction cup, and the first side vertical reference plane is in contact with a side surface of the reflector.

[0023] Furthermore, the front positioning plate includes a second vertical reference plane and a second horizontal reference plane, the second vertical reference plane is in contact with one side of the reflector, and the second horizontal reference plane is connected to the suction cup.

[0024] Furthermore, the flexible universal top clamping mechanism includes an L-shaped support seat; and

[0025] A T-shaped block connected to the bottom of the L-shaped support seat, through which the T-shaped block slides on the suction cup;

[0026] A plurality of spring bolts are arranged on the upper part of the L-shaped support seat, wherein the spring bolts pass through the L-shaped support seat and are connected to flexible pads at the ends thereof, and are in contact with the reflector through the flexible pads;

[0027] A ball head pressing bolt is arranged between the plurality of spring bolts, and the ball head pressing bolt passes through the L-shaped support seat and is connected to the flexible pad.

[0028] In the above technical solution, the lightweight processing and clamping device for a cross-scale space reflector provided by the present invention has the following beneficial effects:

[0029] The present invention discloses a lightweight processing and clamping device for a cross-scale space reflector. By setting a flexible universal top clamping mechanism, the cross-scale reflector can be clamped. The device can meet the clamping requirements of reflectors of different sizes with a length range of 0.1-0.8m and a width range of 0.1-0.5m, and can realize multi-feature high-precision processing and clamping of the plane, outer contour, support hole, weight-reducing cavity and mirror surface of the reflector. The combined clamping method of the top clamps on all sides can realize high-efficiency and high-stability clamping of the reflector. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0031] Figure 1 A schematic structural diagram of a lightweight processing and clamping device for a cross-scale space reflector provided by an embodiment of the present invention;

[0032] Figure 2 A schematic diagram of a lightweight processing and clamping device for a cross-scale space reflector provided by an embodiment of the present invention for clamping a reflector;

[0033] Figure 3 A schematic diagram of mirror processing and clamping of a lightweight processing and clamping device for a cross-scale space reflector provided by an embodiment of the present invention;

[0034] Figure 4 A schematic structural diagram of a positioning base of a lightweight processing clamping device for a cross-scale space reflector provided in an embodiment of the present invention;

[0035] Figure 5 A schematic structural diagram of a suction cup of a lightweight processing and clamping device for a cross-scale space reflector provided by an embodiment of the present invention;

[0036] Figure 6A schematic structural diagram of a front positioning plate of a lightweight processing and clamping device for a cross-scale space reflector provided by an embodiment of the present invention;

[0037] Figure 7 A schematic structural diagram of a side positioning plate of a lightweight processing clamping device for a cross-scale space reflector provided by an embodiment of the present invention;

[0038] Figure 8 A schematic structural diagram of a flexible universal pressing mechanism of a lightweight processing and clamping device for a cross-scale space reflector provided by an embodiment of the present invention;

[0039] Fig. 9 A structural cross-sectional view of a flexible universal pressing mechanism of a lightweight processing and clamping device for a cross-scale space reflector provided in an embodiment of the present invention.

[0040] Description of reference numerals:

[0041] 1. Workbench; 2. Positioning base; 3. Suction cup; 4. Side positioning plate; 5. Front positioning plate; 6. Flexible universal top clamping mechanism; 7. Reflector;

[0042] 201, mounting hole; 202, positioning pin; 203, positioning base reference surface;

[0043] 301, positioning sleeve; 302, upper plane of suction cup; 303, T-slot; 304, lower plane of suction cup; 305, air extraction hole;

[0044] 401, a first side vertical reference plane; 402, a first horizontal reference plane;

[0045] 501, a second vertical reference plane; 502, a second horizontal reference plane;

[0046] 601, flexible pad; 602, L-shaped support seat; 603, T-shaped block; 604, ball head pressure bolt; 605, spring bolt;

[0047] 701, mirror surface of the reflector; 702, reference plane of the reflector; 703, support block of the reflector; 704, weight reduction cavity; 705, outer contour of the reflector. DETAILED DESCRIPTION

[0048] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0049] See also Figures 1 to 9 As shown;

[0050] The invention discloses a lightweight processing clamping device for a cross-scale space reflector, whose outer envelope size is 900×600×200 mm and mass is 40 kg. The device can meet the requirements of lightweight structure and mirror processing of the back of the cross-scale space reflector. The clamping device includes:

[0051] Workbench 1; and

[0052] A positioning base 2 provided on the workbench 1;

[0053] A suction cup 3 mounted on the positioning base 2, wherein the relative position of the suction cup 3 and the workbench 1 is positioned by the positioning base 2, and the upper surface of the suction cup 3 can generate negative pressure to uniformly adsorb the reflector 7;

[0054] A side positioning plate 4 and a front positioning plate 5 connected to the upper end of the suction cup 3, wherein the side positioning plate 4 and the front positioning plate 5 are in contact with two side surfaces of the reflector 7 respectively, and provide a direction positioning for the reflector respectively;

[0055] The clamping device also includes:

[0056] A plurality of flexible universal clamping mechanisms 6 are respectively arranged along the transverse and longitudinal directions of the suction cup 3 , and the flexible universal clamping mechanisms 6 can slide on the suction cup 3 to assist in clamping reflectors of different calibers.

[0057] As a further introduction to this embodiment, the reflector 7 includes a reflector surface 701, a reflector reference surface 702 is formed on the reflector surface 701, and a weight reduction cavity 704 is opened on the reflector reference surface 702;

[0058] Three reflector support blocks 703 disposed on the reflector reference surface 702 and arranged in a triangle;

[0059] The outer circumference of the reflector 7 forms a reflector outer contour 705 .

[0060] As a further introduction to this embodiment, the upper surface of the positioning base 2 forms a positioning base reference surface 203, and the positioning base reference surface 203 is provided with four positioning pins 202 symmetrically distributed in pairs, which provide positioning for the suction cup 3 to ensure the position accuracy of the workpiece;

[0061] The positioning base 2 is provided with a plurality of mounting holes 201 for connecting to the workbench 1 .

[0062] As a further introduction to this embodiment, a positioning sleeve 301 is provided on the suction cup 3, and the positioning sleeve 301 cooperates with the positioning pin 202 to ensure the position of the suction cup 3 on the workbench 1 of the machining center, and is connected to the positioning base 2 by fastening bolts; and

[0063] The suction cup 3 is formed with a suction cup upper plane 302 and a suction cup lower plane 304 respectively, the suction cup upper plane 302 is in contact with the bottom surface of the reflector 7, and the suction cup lower plane 304 is in contact with the positioning base 2;

[0064] The suction cup 3 is provided with multiple T-slots 303 and multiple air extraction holes 305 arranged horizontally and vertically. The multiple air extraction holes 305 can avoid stress concentration and ensure the universality and stability of clamping reflectors with different calibers. The T-slots 303 are used for the sliding of the flexible universal clamping mechanism 6, and the multiple air extraction holes 305 can generate negative pressure to uniformly adsorb the reflector 7.

[0065] As a further introduction to this embodiment, the side positioning plate 4 includes a first side vertical reference plane 401 and a first horizontal reference plane 402 , the first horizontal reference plane 402 is connected to the suction cup 3 , and the first side vertical reference plane 401 is in contact with a side surface of the reflector 7 .

[0066] As a further introduction to this embodiment, the front positioning plate 5 includes a second vertical reference plane 501 and a second horizontal reference plane 502 , the second vertical reference plane 501 is in contact with one side of the reflector 7 , and the second horizontal reference plane 502 is connected to the suction cup 3 .

[0067] As a further introduction to this embodiment, the flexible universal top clamping mechanism 6 includes an L-shaped support seat 602; and

[0068] A T-shaped block 603 connected to the bottom of the L-shaped support seat 602, through which the T-shaped block 603 slides on the suction cup 3;

[0069] A plurality of spring bolts 605 are arranged on the upper part of the L-shaped support seat 602, the spring bolts 605 pass through the L-shaped support seat 602 and are connected to flexible pads 601 at the ends, and are in contact with the reflector 7 through the flexible pads 601;

[0070] The ball head pressing bolt 604 is arranged between the plurality of spring bolts 605, and the ball head pressing bolt 604 passes through the L-shaped support seat 602 and is connected to the flexible pad 601. During the tightening process of the ball head pressing bolt 604, the metal bolt is prevented from directly pressing the reflector 7, so that the universal flexible clamping is realized, the force is evenly applied, and the clamping stability is further ensured.

[0071] The invention discloses a lightweight processing and clamping device for a cross-scale space reflector, and the specific clamping process is as follows:

[0072] like Figure 1 , Figure 4 , Figure 5As shown, firstly, the positioning base 2 is placed on the workbench 1 of the processing equipment, connected to the workbench 1 through the positioning base mounting hole 201, and then the suction cup 3 is connected to the positioning pin 202 through the positioning sleeve 301 to determine the position of the suction cup 3 on the workbench 1. Among them, the flatness of the positioning base reference surface 203 is 3μm, the flatness of the suction cup lower plane 304 is 3μm, the flatness of the suction cup upper plane 302 is 3μm, and the parallelism of the suction cup upper plane 302 based on the suction cup lower plane 304 is 5μm.

[0073] like Figure 1 , Figure 6 , Figure 7 As shown, firstly, the front positioning plate 5 is placed on the suction cup 3, so that the second horizontal reference plane 502 contacts the upper plane 302 of the suction cup, the position of the front positioning plate 5 is adjusted, so that the parallelism of the second vertical reference plane 501 and the processing equipment in the X direction is better than 5μm, and the front positioning plate 5 is tightened, and then the side positioning plate 4 is placed on the suction cup 3, so that the first horizontal reference plane 402 contacts the upper plane 302 of the suction cup, and the position of the side positioning plate 4 is adjusted, so that the parallelism of the first vertical reference plane 401 and the processing equipment in the Y direction is better than 5μm, and the side positioning plate 4 is tightened. Among them, the flatness of the second horizontal reference plane 502 is 3μm, the flatness of the second vertical reference plane 501 is 3μm, the verticality of the second vertical reference plane 501 based on the second horizontal reference plane 502 is 5μm, the flatness of the first horizontal reference plane 402 is 3μm, the flatness of the first vertical reference plane 401 is 3μm, and the verticality of the first vertical reference plane 401 based on the first horizontal reference plane 402 is 5μm.

[0074] like Figure 8 As shown, three spring bolts 605 are passed through the L-shaped support seat 602 and connected to the flexible pad 601, and then the ball head pressing bolt 604 is screwed into the L-shaped support seat 602, so that the ball head surface of the ball head pressing bolt 604 contacts the spherical surface of the flexible pad 601, forming a flexible universal pressing mechanism 6.

[0075] like Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 8As shown, the reflector 7 is placed on the upper plane 302 of the suction cup, and the position of the reflector 7 is moved so that the front and side of the reflector 7 are in contact with the second vertical reference plane 501 and the first vertical reference plane 401 respectively, and then the flexible universal pressing mechanism 6 is installed in the T-slot 303. According to the size of the reflector to be processed, the position of the flexible universal pressing mechanism 6 is moved so that the distance between the flexible pad 601 and the outer contour 705 of the reflector is 5-8mm, and the L-shaped support seat 602 is fixed to the suction cup 3 through the T-block 603, and then the two forward ball head pressing bolts 604 are screwed in at the same time by hand until the flexible pad 601 is in contact with the outer contour 705 of the reflector, and the pressing bolts 604 are tightened at the same time with a torque wrench, and the suction cup 3 is opened to make the exhaust hole 305 generate negative pressure to adsorb the reflector 7, thereby further stabilizing the overall clamping force.

[0076] In the above technical solution, the lightweight processing and clamping device for a cross-scale space reflector provided by the present invention has the following beneficial effects:

[0077] The present invention discloses a lightweight processing and clamping device for a cross-scale space reflector. By setting a flexible universal top clamping mechanism, the cross-scale reflector can be clamped. The device can meet the clamping requirements of reflectors of different sizes with a length range of 0.1-0.8m and a width range of 0.1-0.5m, and can realize multi-feature high-precision processing and clamping of the plane, outer contour, support hole, weight-reducing cavity and mirror surface of the reflector. The combined clamping method of the top clamps on all sides can realize high-efficiency and high-stability clamping of the reflector.

[0078] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A lightweight processing and clamping device for a cross-scale space reflector, characterized in that: The clamping device comprises: a workbench (1); and A positioning base (2) disposed on the workbench (1); A suction cup (3) mounted on the positioning base (2), wherein the relative position of the suction cup (3) and the workbench (1) is positioned by the positioning base (2), and the upper surface of the suction cup (3) is capable of generating negative pressure to uniformly adsorb the reflector (7); A side positioning plate (4) and a front positioning plate (5) connected to the upper end of the suction cup (3), wherein the side positioning plate (4) and the front positioning plate (5) are in contact with two side surfaces of the reflector (7) respectively and provide a direction for positioning the reflector respectively; The clamping device also includes: A plurality of flexible universal clamping mechanisms (6) are respectively arranged in the transverse direction and the longitudinal direction of the suction cup (3), and the flexible universal clamping mechanisms (6) can slide on the suction cup (3) to assist in clamping reflectors of different calibers.

2. The lightweight processing and clamping device for a cross-scale space reflector according to claim 1 is characterized in that: The reflector (7) comprises a reflector surface (701), a reflector reference surface (702) is formed on the reflector surface (701), and a weight reduction cavity (704) is opened on the reflector reference surface (702); three reflector support blocks (703) disposed on the reflector reference surface (702) and arranged in a triangle; The outer circumference of the reflector (7) forms a reflector outer contour (705).

3. The lightweight processing and clamping device for a cross-scale space reflector according to claim 1 is characterized in that: The upper surface of the positioning base (2) forms a positioning base reference surface (203), and the positioning base reference surface (203) is provided with four positioning pins (202) symmetrically distributed in pairs, so as to provide positioning for the suction cup (3); The positioning base (2) is provided with a plurality of mounting holes (201) for connecting to the workbench (1).

4. The lightweight processing and clamping device for a cross-scale space reflector according to claim 1 is characterized in that: The suction cup (3) is provided with a positioning sleeve (301), which cooperates with the positioning base (2) for positioning through the positioning sleeve (301), and is connected to the positioning base (2) through a fastening bolt; and The suction cup (3) is respectively formed with a suction cup upper plane (302) and a suction cup lower plane (304), the suction cup upper plane (302) is in contact with the bottom surface of the reflector (7), and the suction cup lower plane (304) is in contact with the positioning base (2); The suction cup (3) is provided with a plurality of T-shaped slots (303) and a plurality of air suction holes (305) arranged in a horizontal and vertical direction, the T-shaped slots (303) being provided for the flexible universal clamping mechanism (6) to slide, and the plurality of air suction holes (305) being able to generate negative pressure to uniformly adsorb the reflector (7).

5. The lightweight processing and clamping device for a cross-scale space reflector according to claim 1, characterized in that: The side positioning plate (4) comprises a first side vertical reference surface (401) and a first horizontal reference surface (402), wherein the first horizontal reference surface (402) is connected to the suction cup (3), and the first side vertical reference surface (401) is in contact with a side surface of the reflector (7).

6. The lightweight processing and clamping device for a cross-scale space reflector according to claim 1, characterized in that: The front positioning plate (5) comprises a second vertical reference plane (501) and a second horizontal reference plane (502), wherein the second vertical reference plane (501) contacts one side of the reflector (7), and the second horizontal reference plane (502) is connected to the suction cup (3).

7. The lightweight processing and clamping device for a cross-scale space reflector according to claim 1 is characterized in that: The flexible universal top clamping mechanism (6) comprises an L-shaped support seat (602); and A T-shaped block (603) connected to the bottom of the L-shaped support seat (602) slides on the suction cup (3) through the T-shaped block (603); A plurality of spring bolts (605) are arranged on the upper part of the L-shaped support seat (602), wherein the spring bolts (605) pass through the L-shaped support seat (602) and are connected to flexible pads (601) at their ends, and are in contact with the reflector (7) through the flexible pads (601); A ball head pressing bolt (604) is arranged between the plurality of spring bolts (605), and the ball head pressing bolt (604) passes through the L-shaped support seat (602) and is connected to the flexible pad (601).

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