Reflector machining clamp

Abstract

The utility model belongs to the technical field of reflector machining, and particularly relates to a reflector machining clamp which comprises a base, an alloy pipe, a silica gel gasket, an upper arc plate and a lifting mechanism which are sequentially arranged from bottom to top, a lower port of the alloy pipe is fixedly connected to the upper surface of the base, and an upper port of the alloy pipe is fixedly connected to the lower surface of the silica gel gasket. The upper arc plate is detachably and fixedly connected with the lifting mechanism, the central axis of the upper arc plate coincides with the central axis of the alloy pipe, a negative pressure connector communicated with the alloy pipe is fixed to the lower surface of the base, a covered edge is integrally installed on the outer side of the silica gel gasket and arranged on the outer side of the alloy pipe in a sleeving mode, and the lifting mechanism comprises a threaded rod vertically installed on the upper surface of the upper arc plate. The central axis of the threaded rod coincides with the central axis of the upper arc plate, a supporting arm is installed outside the threaded rod in a threaded mode, and one end of the supporting arm is folded downwards. Blanks with different radians can be switched, only the single upper arc plate needs to be replaced, and the workload of clamping the meniscus reflector blank can be reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of reflector processing, and particularly relates to a reflector processing fixture. Background Art

[0002] Optical reflectors can be divided into cylindrical reflectors, concave reflectors, convex reflectors and meniscus reflectors. These reflectors need to be designed with parameters such as diameter and curvature, and then processed through cutting, grinding, rough grinding, fine grinding and polishing, centering and edge grinding, gluing, and coating with reflective layers to make reflector products that meet the design requirements. Among them, meniscus reflectors have thinner edges than other reflectors, making them more difficult to process.

[0003] The blank of the meniscus reflector has two curved surfaces, front and back, and needs to be customized with upper and lower clamps. The blank between the upper and lower clamps is centered and leveled, and then the two curved surfaces of the blank are vertically pressed against each other. A screw can be used to tighten one clamp, and a spring can be used to buffer the plane of the other clamp.

[0004] To trim the blank of the meniscus reflector, the upper and lower clamps need to fit the curvature of the front and back curved surfaces respectively and then clamp them. Switching between different types of blanks requires upper and lower clamps with different curvatures, so that both the upper and lower clamps need to be disassembled, and subsequently replaced and installed, which is not conducive to reducing the workload of clamping the meniscus reflector blank. For this reason, we propose a reflector processing fixture. Utility Model Content

[0005] The purpose of the present invention is to provide a reflector processing fixture. When switching blanks with different curvatures, only a single upper arc plate needs to be replaced, thereby reducing the workload of clamping the meniscus reflector blanks.

[0006] The technical solutions adopted in this utility are as follows:

[0007] A reflector processing fixture comprises a base, an alloy tube, a silicone gasket, an upper arc plate and a lifting mechanism which are arranged in sequence from bottom to top, wherein the lower end of the alloy tube is fixedly connected to the upper surface of the base, the upper end of the alloy tube is fixedly connected to the lower surface of the silicone gasket, the upper arc plate is detachably fixedly connected to the lifting mechanism, the central axis of the upper arc plate coincides with the central axis of the alloy tube, a negative pressure joint connected to the alloy tube is fixed on the lower surface of the base, and when the blank is trimmed, the lifting mechanism is controlled to lift the upper arc plate away from the alloy tube, and the convex side of the blank is placed on the silicone gasket, and a ruler is used to adjust the upper arc plate. After calibration and centering, start the vacuum pump to suck the air in the alloy tube to form a negative pressure condition to suck the blank, and control the lifting mechanism to lower the upper arc plate to clamp the blank with the alloy tube, and use the deformation of the silicone gasket for buffering to avoid hard collision with the blank. At this time, the blank can be trimmed to make a meniscus reflector. The upper arc plate can be lifted to loosen the upper arc plate to facilitate removal of the upper arc plate. Subsequently, when switching to blanks with different curvatures, the alloy tube and the silicone gasket can fit the convex side of blanks with various curvatures. Only a single upper arc plate needs to be replaced, which can reduce the workload of clamping the meniscus reflector blank.

[0008] The outer side of the silicone gasket is integrally installed with an edging, and the edging is set on the outer side of the alloy tube. The edging tightens the silicone gasket on the outer side of the alloy tube. Once the blank squeezes the silicone gasket toward the inside of the alloy tube, the edging can tighten the silicone gasket from the outside to continuously wrap the upper end of the alloy tube to prevent the entire silicone gasket from being pressed into the alloy tube, thereby preventing the alloy tube from damaging the blank.

[0009] The lifting mechanism includes a threaded rod vertically installed on the upper surface of the upper arc plate, the central axis of the threaded rod coincides with the central axis of the upper arc plate, a support arm is installed on the outer thread of the threaded rod, one end of the support arm is folded downward, and the threaded rod is rotated forward along the thread of the support arm to drive the upper arc plate to descend until it is close to the concave surface of the blank. Conversely, the threaded rod is reversed to drive the upper arc plate to rise and detach from the blank.

[0010] A cushion layer is bonded to the lower surface of the upper arc plate, and the outer diameter of the cushion layer is not less than the outer diameter of the alloy tube. After the upper arc plate descends, the cushion layer can be driven to press against the concave surface of the blank, and the compression deformation of the cushion layer is used for buffering to avoid hard collision.

[0011] A crank is fixed to the upper end of the threaded rod, and the height of the crank is greater than the height of the support arm. The threaded rod can be rotated by holding the crank to avoid injuries caused by contact between the hands and the threaded rod.

[0012] A sleeve is axially fixedly installed in the middle of the upper surface of the upper arc plate, and the interior of the sleeve is threadedly connected to the lower end of the threaded rod. When replacing the upper arc plate, the sleeve can be reversed and disengaged from the lower end of the threaded rod, so as to facilitate the upper arc plate to quickly disengage from the threaded rod. Conversely, after selecting the upper arc plate matching the blank, the lower end of the upper threaded rod can be rotated forward with the corresponding sleeve to quickly align the upper arc plate and fix it to the lower end of the threaded rod.

[0013] The technical effects achieved by this utility model are:

[0014] The present invention provides a practical reflector processing fixture. When trimming a blank, the lifting mechanism is controlled to lift the upper arc plate away from the alloy tube, the outwardly convex side of the blank is placed on the silicone gasket, which is calibrated and centered with a ruler, and then the vacuum pump is started to suck the air in the alloy tube to form a negative pressure condition to suck the blank tightly, and the lifting mechanism is controlled to lower the upper arc plate to clamp the blank with the alloy tube, and the deformation of the silicone gasket is used for buffering to avoid hard collision with the blank. At this time, the blank can be trimmed, and a meniscus reflector can be formed after the trimming is completed. The upper arc plate can be lifted to loosen the upper arc plate, which is convenient for removing the upper arc plate. Subsequently, when switching to blanks with different curvatures, the alloy tube and the silicone gasket can fit the outwardly convex side of blanks with various curvatures. Only a single upper arc plate needs to be replaced, and the workload of clamping the meniscus reflector blank can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view of a reflector processing fixture of the present invention;

[0016] Figure 2 It is a bottom view of the base of the utility model;

[0017] Figure 3 It is a bottom view of the practical silicone gasket;

[0018] Figure 4 It is the front view of the practical upper arc plate.

[0019] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0020] 1. Base; 2. Alloy tube; 3. Silicone gasket; 4. Upper arc plate; 5. Negative pressure joint; 6. Edge wrapping; 7. Threaded rod; 8. Support arm; 9. Cushion; 10. Crank; 11. Sleeve. DETAILED DESCRIPTION

[0021] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with the embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the present invention, and does not strictly limit the scope of protection specifically requested by the present invention.

[0022] like Figure 1-4As shown, a reflector processing fixture comprises a base 1, an alloy tube 2, a silicone gasket 3, an upper arc plate 4 and a lifting mechanism which are arranged in sequence from bottom to top. The lower end of the alloy tube 2 is fixedly connected to the upper surface of the base 1, the upper end of the alloy tube 2 is fixedly connected to the lower surface of the silicone gasket 3, the upper arc plate 4 is detachably fixedly connected to the lifting mechanism, the central axis of the upper arc plate 4 coincides with the central axis of the alloy tube 2, a negative pressure joint 5 connected to the alloy tube 2 is fixed on the lower surface of the base 1, pin holes are provided at the four corners of the lower surface of the base 1, bolts can be passed through these pin holes to fix it on the processing table, a hose is used to connect the negative pressure joint 5 and a vacuum pump with a gas tank, and when the blank is trimmed, the lifting mechanism is controlled to lift the upper arc plate 4 Stay away from the alloy tube 2, place the convex side of the blank on the silicone gasket 3, calibrate it to the center with a ruler, and then start the vacuum pump to suck the air in the alloy tube 2 to form a negative pressure condition to suck the blank tightly, and control the lifting mechanism to lower the upper arc plate 4 to clamp the blank with the alloy tube 2, and use the deformation of the silicone gasket 3 for buffering to avoid hard collision with the blank. At this time, the blank can be trimmed to form a meniscus reflector. The upper arc plate 4 can be lifted to loosen the upper arc plate 4 to facilitate removal of the upper arc plate 4. Subsequently, when switching to blanks with different curvatures, the alloy tube 2 and the silicone gasket 3 can fit the convex side of blanks with various curvatures. Only a single upper arc plate 4 needs to be replaced, which can reduce the workload of clamping the meniscus reflector blank.

[0023] The glass material of the meniscus reflector blank itself is fragile, especially when clamping its concave and convex surfaces, the curvature of the upper and lower clamps must fit the concave and convex curved surfaces, otherwise the extrusion effect is uneven and causes cracks, which is why the upper arc plate 4 must be replaced when switching blanks. For this reason, each replacement of the upper arc plate 4 must be adapted to the concave surface of the blank on the current processing line.

[0024] like Figure 1 and Figure 3 As shown, an edge wrapping 6 is integrally installed on the outside of the silicone gasket 3, and the edge wrapping 6 is sleeved on the outside of the alloy tube 2. The edge wrapping 6 and the silicone gasket 3 are made of the same material and will not produce toxic side effects on the blank. The edge wrapping 6 tightens the silicone gasket 3 on the outside of the alloy tube 2. Once the blank squeezes the silicone gasket 3 toward the inside of the alloy tube 2, the edge wrapping 6 can tighten the silicone gasket 3 from the outside to continuously wrap the upper end of the alloy tube 2 to prevent the silicone gasket 3 from being pressed into the alloy tube 2 as a whole, thereby preventing the alloy tube 2 from damaging the blank.

[0025] like Figure 1 , Figure 2 and Figure 4As shown, the lifting mechanism includes a threaded rod 7 vertically installed on the upper surface of the upper arc plate 4, the central axis of the threaded rod 7 coincides with the central axis of the upper arc plate 4, and a support arm 8 is installed on the outer thread of the threaded rod 7. One end of the support arm 8 is folded downward and fixed on the workbench. The threaded rod 7 is rotated forward along the thread of the support arm 8 to drive the upper arc plate 4 to descend until it is close to the concave surface of the blank. Conversely, the threaded rod 7 is reversed to drive the upper arc plate 4 to rise and can be separated from the blank.

[0026] like Figure 1 , Figure 2 and Figure 4 As shown, a cushion layer 9 is bonded to the lower surface of the upper arc plate 4. The cushion layer 9 can be made of silicone material. The outer diameter of the cushion layer 9 is not less than the outer diameter of the alloy tube 2. After the upper arc plate 4 descends, the cushion layer 9 can be driven to press against the concave surface of the blank, and the compressive deformation of the cushion layer 9 is used for buffering to avoid hard collision.

[0027] like Figure 1 and Figure 4 As shown, a crank 10 is fixed to the upper end of the threaded rod 7. The height of the crank 10 is greater than the height of the support arm 8. The crank 10 can be held by hand to rotate the threaded rod 7 to avoid injuries caused by contact with the threaded rod 7.

[0028] like Figure 1 and Figure 4 As shown, a sleeve 11 is axially fixedly installed in the middle of the upper surface of the upper arc plate 4, and the interior of the sleeve 11 is threadedly connected to the lower end of the threaded rod 7. When replacing the upper arc plate 4, the sleeve 11 can be reversed to disengage from the lower end of the threaded rod 7, so as to facilitate the upper arc plate 4 to quickly disengage from the threaded rod 7. Conversely, after selecting the upper arc plate 4 matching the blank, the lower end of the upper threaded rod 7 can be rotated forward with the corresponding sleeve 11, so that the upper arc plate 4 can be quickly aligned with the lower end of the threaded rod 7.

[0029] The working principle of the utility model is as follows: when trimming the blank, the lifting mechanism is controlled to lift the upper arc plate 4 away from the alloy tube 2, and the convex side of the blank is placed on the silicone gasket 3, which is calibrated in the center with a ruler, and then the vacuum pump is started to suck the air in the alloy tube 2 to form a negative pressure condition to suck the blank tightly, and the lifting mechanism is controlled to lower the upper arc plate 4 to clamp the blank with the alloy tube 2, and the deformation of the silicone gasket 3 is used for buffering to avoid hard collision with the blank. At this time, the blank can be trimmed, and a meniscus reflector can be made after the trimming is completed. The upper arc plate 4 can be lifted to loosen the upper arc plate 4 to facilitate the removal of the upper arc plate 4, and subsequently switch to blanks with different curvatures. The alloy tube 2 and the silicone gasket 3 can fit the convex side of blanks with various curvatures. Only a single upper arc plate 4 needs to be replaced, which can reduce the workload of clamping the meniscus reflector blank.

[0030] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A reflector processing fixture, characterized in that: The invention comprises a base (1), an alloy tube (2), a silicone gasket (3), an upper arc plate (4) and a lifting mechanism which are arranged in sequence from bottom to top, wherein the lower end of the alloy tube (2) is fixedly connected to the upper surface of the base (1), the upper end of the alloy tube (2) is fixedly connected to the lower surface of the silicone gasket (3), the upper arc plate (4) is detachably fixedly connected to the lifting mechanism, the central axis of the upper arc plate (4) coincides with the central axis of the alloy tube (2), and a negative pressure joint (5) which is in communication with the alloy tube (2) is fixedly provided on the lower surface of the base (1).

2. A reflector processing fixture according to claim 1, characterized in that: The outer side of the silicone gasket (3) is integrally mounted with an edge wrapping (6), and the edge wrapping (6) is sleeved on the outer side of the alloy tube (2).

3. A reflector processing fixture according to claim 1, characterized in that: The lifting mechanism comprises a threaded rod (7) vertically mounted on the upper surface of the upper arc plate (4), the central axis of the threaded rod (7) coincides with the central axis of the upper arc plate (4), and a support arm (8) is threadedly mounted on the outer surface of the threaded rod (7), one end of the support arm (8) is folded downward.

4. The reflector processing fixture according to claim 1, characterized in that: A cushion layer (9) is bonded to the lower surface of the upper arc plate (4), and the outer diameter of the cushion layer (9) is not less than the outer diameter of the alloy tube (2).

5. The reflector processing fixture according to claim 3, characterized in that: A crank (10) is fixed to the upper end of the threaded rod (7), and the height of the crank (10) is greater than the height of the support arm (8).

6. The reflector processing fixture according to claim 3, characterized in that: A sleeve (11) is fixedly mounted in the middle of the upper surface of the upper arc plate (4) along the axial direction, and the interior of the sleeve (11) is threadedly connected to the lower end of the threaded rod (7).

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