Cylindrical mirror grinding jig

Abstract

The utility model provides a cylindrical mirror grinding jig. The cylindrical mirror grinding jig comprises a die holder, the cylindrical mirror is a biconcave cylindrical mirror with arc-shaped concave surfaces on two sides; the die holder is provided with a concave cavity for the grinding column to enter and exit; a mounting groove for loading the cylindrical mirror is formed in the concave cavity, a bearing block is arranged in the mounting groove, and the bearing block is provided with a bearing convex part matched with the arc-shaped concave surface of the cylindrical mirror; a limiting block is arranged in the concave cavity and provided with a concave position corresponding to the arc-shaped concave face of the cylindrical mirror in shape. According to the cylindrical mirror grinding jig, the bearing block is arranged in the mounting groove of the die holder, and the bearing convex part of the bearing block can abut against the cambered concave surface of the biconcave cylindrical mirror to bear the biconcave cylindrical mirror, so that the stress of the middle narrow part of the biconcave cylindrical mirror is reduced, and the situation of cracks or fractures during grinding is reduced. In addition, a limiting block is arranged in the concave cavity of the die holder and used for abutting against the grinding column for limiting when the grinding column conducts grinding, and the cylindrical mirror is prevented from being damaged due to excessive stress.

Description

TECHNICAL FIELD

[0001] The utility model relates to a cylindrical lens lapping fixture BACKGROUND

[0002] Cylindrical lenses are mainly applied to the design requirement of changing the imaging size. They are divided into plano-convex cylindrical lenses, plano-concave cylindrical lenses, biconvex cylindrical lenses, biconcave cylindrical lenses, meniscus cylindrical lenses, cylindrical intersection cylindrical lenses and special-shaped cylindrical lenses.

[0003] Among them, the biconcave cylindrical lens is a cylindrical lens with arc-shaped concave surfaces on both sides. After the concave surfaces of the biconcave cylindrical lens are formed, they need to be processed through lapping and other processes; during lapping, the biconcave cylindrical lens needs to be fixed in the groove of a mold, and lapping is performed through an arc surface grinding cylinder. However, since the middle part of the biconcave cylindrical lens is thin, cracks are easily generated during lapping, and even breakage occurs, resulting in low product qualification rate. SUMMARY

[0004] The utility model discloses a cylindrical lens lapping fixture, which comprises a mold base, the cylindrical lens is a biconcave cylindrical lens with arc-shaped concave surfaces on both sides, the mold base is provided with a concave cavity for the grinding cylinder to enter and exit, the concave cavity is provided with a mounting groove for loading the cylindrical lens, the mounting groove is provided with a supporting block, the supporting block is provided with a supporting convex part matching the arc-shaped concave surface of the cylindrical lens, and the concave cavity is provided with a limiting block, and the limiting block is provided with a concave position corresponding to the shape of the arc-shaped concave surface of the cylindrical lens.

[0005] The cylindrical lens lapping fixture of the utility model is provided with a supporting block in the mounting groove of the mold base, the supporting convex part of the supporting block can abut against and support the arc surface concave surface of the biconcave cylindrical lens, the stress of the narrow part in the middle of the biconcave cylindrical lens is reduced, and the generation of cracks or breakage during lapping is reduced. In addition, the limiting block is arranged in the concave cavity of the mold base, and the limiting block abuts against the grinding cylinder during lapping to limit the stress of the cylindrical lens and prevent the cylindrical lens from being damaged by excessive stress. BRIEF DESCRIPTION OF DRAWINGS

[0006] Figure 1 It is a sectional view of the utility model.

[0007] Figure 2 It is a sectional exploded view of the utility model.

[0008] Figure 3 It is a schematic view of the utility model loading the cylindrical lens.

[0009] Figure 4 It is a schematic view of the utility model applied to lapping.

[0010] Figure 5 It is a sectional view of the mold base of the utility model.

[0011] Figure 6 It is a structure schematic view of the utility model.

[0012] Figure 7 It is a structure schematic view of the utility model's mould seat.

[0013] Figure 8 It is a structure schematic view of the utility model's limiting block.

[0014] Figure 9 It is a structure schematic view of the utility model's supporting block. DETAILED DESCRIPTION

[0015] The application scheme is further described as follows in combination with the drawings:

[0016] Referring to the accompanying Figures 1-9 A cylindrical mirror grinding jig, comprising a mould seat 1. The cylindrical mirror is a double concave cylindrical mirror 7 with arc concave surfaces 71 on both sides.

[0017] The mould seat 1 is provided with a concave cavity 10 for the entry and exit of a grinding column 6; the concave cavity 10 is provided with a mounting groove 11 for loading the cylindrical mirror, the mounting groove 11 is provided with a supporting block 2, the supporting block 2 is provided with a supporting convex part 21 that matches the arc concave surface 71 of the cylindrical mirror, and the supporting convex part 21 is used for abutting against the cylindrical mirror.

[0018] The concave cavity 10 is provided with a limiting block 3, the limiting block 3 is provided with a concave position 31 corresponding to the shape of the arc concave surface 71 of the cylindrical mirror, and the concave position 31 is used for abutting against the limiting block 6 during grinding to prevent the cylindrical mirror from being damaged by excessive force.

[0019] The mounting groove 11 is at least provided with two, and each mounting groove 11 extends along the length direction of the mould seat 1.

[0020] In the embodiment, the mounting groove 11 is provided with two, and the limiting block 3 is located between the two mounting grooves 11. The mounting grooves 11 are distributed at intervals around the axis line of the arc concave surface 71 of the cylindrical mirror.

[0021] The supporting block 2 and the mould seat 1 are detachably connected through a first screw 4, and the supporting block 2 can be detachably replaced to adapt to different specifications of the double concave cylindrical mirror 7.

[0022] The bottom of the supporting block 2 is provided with a supporting connecting block 22, the supporting connecting block 22 is provided with a supporting connecting hole 221; the groove bottom of the mounting groove 11 is provided with a first connecting groove 12, the outer side of the mould seat 1 is provided with a first connecting hole 121 extending to the first connecting groove 12; the supporting connecting block 22 is embedded in the first connecting groove 12, and the first screw 4 is screwed through the first connecting hole 121 and the supporting connecting hole 221.

[0023] The supporting block 2 is embedded in the first connecting groove 12 through the supporting connecting block 22, thereby improving the stability of the connection; the first screw 4 is inserted from the outside of the mold base 1, and there is no exposed screw head in the cavity 10, thereby not affecting the grinding operation.

[0024] The supporting convex part 21 is covered with an elastic glue layer (not shown in the drawing), which can prevent the arc-shaped concave surface 71 from being scraped.

[0025] In the embodiment, a silica gel sleeve is sleeved on the supporting convex part 21, so that the surface is covered with a layer of silica gel.

[0026] The limiting block 3 is detachably connected with the mold base 1 through the second screw 5. The limiting block 3 can be replaced and matched with different specifications of the double-concave cylindrical mirror 7.

[0027] The cavity 10 is provided with a limiting groove 13, the limiting block 3 is connected with the limiting groove 13 through the second screw 5, the bottom of the limiting block 3 is provided with a limiting connecting block 32, the limiting connecting block 32 is provided with a limiting connecting hole 321, the groove bottom of the limiting groove 13 is provided with a first connecting groove 12, the outside of the mold base 1 is provided with a second connecting hole 141 extending to a second connecting groove 14, the limiting connecting block 32 is embedded in the second connecting groove 14, and the second screw 5 is screwed through the second connecting hole 141 and the limiting connecting hole 321.

[0028] The limiting block 3 is embedded in the second connecting groove 14 through the limiting connecting block 32, thereby improving the stability of the connection; the second screw 5 is inserted from the outside of the mold base 1, and there is no exposed screw head in the cavity 10, thereby not affecting the grinding operation.

[0029] The corner position (the intersection position of the groove wall and the groove bottom) of the mounting groove 11 is provided with a groove for dropping the wax liquid, and the groove extends along the length direction of the mounting groove 11.

[0030] In use, the double-concave cylindrical mirror 7 is placed in the mounting groove 11, the supporting convex part 21 of the supporting block 2 abuts against the arc-shaped concave surface 71 of the double-concave cylindrical mirror 7, and the edge of the double-concave cylindrical mirror 7 is adhered and fixed with the mounting groove 11 through the paraffin.

[0031] When the grinding column 6 enters the cavity 10 for grinding, the grinding column 6 has an arc surface part 61 for grinding the arc-shaped concave surface 71 of the cylindrical mirror; the recess 31 of the limiting block 3 is on the same arc surface as the arc-shaped concave surface 71 of the cylindrical mirror exposed on the mold base 1. The grinding column 6 is in contact with the recess 31 of the limiting block 3 and the arc-shaped concave surface 71 of the cylindrical mirror in the cavity 10.

[0032] The cylindrical lens grinding jig of the technical scheme is provided with a supporting block 2 in the mounting groove 11 of the mold base 1, the supporting convex part 21 of the supporting block 2 can abut against the arc concave surface of the double-concave cylindrical lens 7 to support the double-concave cylindrical lens 7, so that the stress of the narrow middle part of the double-concave cylindrical lens 7 is reduced, and the cracking or breaking during grinding is reduced. In addition, the limiting block 3 is arranged in the concave cavity 10 of the mold base 1, and is used for abutting against the arc convex surface of the grinding column 6 to limit the grinding column 6 during grinding, so that the cylindrical lens is prevented from being damaged by excessive stress.

[0033] The above preferred embodiments should be regarded as examples of the embodiments of the application, and any technical deduction, replacement, improvement and the like made on the basis of the application should be regarded as the protection scope of the patent.

Claims

1. A cylindrical mirror lapping jig comprising a mold base; the cylindrical mirror is a biconcave cylindrical mirror with arc-shaped concave surfaces on both sides; characterized in that: the mold base is provided with a concave cavity for the entry and exit of a lapping cylinder; the concave cavity is provided with a mounting groove for loading the cylindrical mirror, and the mounting groove is provided with a supporting block, and the supporting block is provided with a supporting convex part that matches the arc-shaped concave surface of the cylindrical mirror; the concave cavity is provided with a limiting block, and the limiting block is provided with a concave position corresponding to the shape of the arc-shaped concave surface of the cylindrical mirror. 2.The cylindrical mirror lapping jig according to claim 1, characterized in that: the mounting groove is provided with at least two, and each mounting groove extends along the length direction of the mold base. 3.The cylindrical mirror lapping jig according to claim 2, characterized in that: the mounting groove is provided with two, and the limiting block is located between the two mounting grooves. 4.The cylindrical mirror lapping jig according to any one of claims 1-3, characterized in that: the supporting block is detachably connected with the mold base by a first screw. 5.The cylindrical mirror lapping jig according to claim 4, characterized in that: the bottom of the supporting block is provided with a supporting connecting block, and the supporting connecting block is provided with a supporting connecting hole; the bottom of the mounting groove is provided with a first connecting groove, and the outer side of the mold base is provided with a first connecting hole extending to the first connecting groove; the supporting connecting block is embedded in the first connecting groove, and the first screw is screwed through the first connecting hole and the supporting connecting hole.

6. The cylindrical lens polishing tool of claim 5, wherein: an elastic glue layer is coated on the supporting convex part. 7.The cylindrical mirror lapping jig according to any one of claims 1-3, characterized in that: the limiting block is detachably connected with the mold base by a second screw. 8.The cylindrical mirror lapping jig according to claim 7, characterized in that: the concave cavity is provided with a limiting groove, and the limiting block is connected with the limiting groove by the second screw; the bottom of the limiting block is provided with a limiting connecting block, and the limiting connecting block is provided with a limiting connecting hole; the bottom of the limiting groove is provided with a first connecting groove, and the outer side of the mold base is provided with a second connecting hole extending to the second connecting groove; the limiting connecting block is embedded in the second connecting groove, and the second screw is screwed through the second connecting hole and the limiting connecting hole. 9.The cylindrical mirror lapping jig according to any one of claims 1-3, characterized in that: an angle position of the mounting groove is provided with a groove for dropping wax, and the groove extends along the length direction of the mounting groove.

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