Optical lens polishing positioning clamp

Abstract

The utility model discloses an optical lens polishing positioning clamp which comprises a positioning frame, two sets of adjusting mechanisms are arranged on the inner side of the positioning frame, positioning mechanisms are arranged on the inner side and the two sides of the positioning frame, and connecting blocks are fixedly arranged at the front end and the rear end of the positioning frame and close to the lower side. The adjusting mechanism comprises a movable block movably arranged on the inner side of the positioning frame, a movable groove is formed in the inner side of the movable block, a toothed plate is movably arranged on the inner side of the movable groove, and a movable shaft is movably arranged on the side, close to the toothed plate, of the inner side of the movable block. According to the optical lens polishing and positioning clamp, the two sets of clamping blocks with different heights are matched with the two sets of bottom plates, use of optical lenses with different degrees is achieved, a plurality of gaskets do not need to be arranged on the lower portion of the lens to be machined to change the height of the lens, the gaskets are prevented from being separated from the lens in the rotating state, and machining efficiency is improved. And therefore, the polishing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical lenses, in particular to a polishing and positioning fixture for optical lenses. Background Art

[0002] Optical glass is made of high-purity silicon, boron, sodium, potassium, zinc, lead, magnesium, calcium, barium and other oxides mixed according to a specific formula, melted at high temperature in a platinum crucible, stirred evenly with ultrasound to remove bubbles; then slowly cooled over a long period of time to prevent the glass block from generating internal stress. The cooled glass block must be measured by optical instruments to check whether the purity, transparency, uniformity, refractive index and dispersion rate meet the specifications. Qualified glass blocks are heated and forged to form optical lens blanks. In the 1930s, new rare earth element optical glass appeared, the main components of which are lanthanum, thorium and tantalum oxides. Rare earth element optical glass has a high refractive index, which opens up new possibilities for the design of optical lenses. Today, lanthanum glass is often used in large-aperture lenses. Thorium glass has been discontinued due to its radioactivity. During the processing of optical lenses, the end faces are usually polished first. At this time, the blank lens needs to be installed in a special fixture for fixing so that the polishing equipment can polish the blank lens. Since different lenses have different degree requirements, the heights that need to be processed are also different. When used, the existing lens fixtures generally place multiple gaskets under the bottom of the lens to be processed to change its height. However, since the rotating table on which the lens positioning fixture is placed will rotate under the drive of the motor, it is very easy for the gaskets to often fall off the lens, seriously affecting production efficiency. Utility Model Content

[0003] The main purpose of the utility model is to provide an optical lens polishing positioning fixture, which can effectively solve the problems in the background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] 4. The repairing kit for automotive dents, according to claim 1, wherein the two trackballs are mounted on two guide rails and the guide rails are located adjacent to each other in the trackball housing, wherein the trackball has a cam and a cam on its side.

[0006] Preferably, the two groups of adjustment mechanisms are mirror-imaged, the tooth plate limiter is movably arranged at the inner side of the movable groove, and the tooth plate is meshed with the gear.

[0007] Preferably, the pawl is engaged with the ratchet, and the spring block is made of elastic metal material.

[0008] Preferably, a plurality of anti-slip strips are provided on the inner sides of the two groups of clamping blocks and the upper ends of the two groups of bottom plates, and the shape of the clamping blocks is semicircular.

[0009] Preferably, the positioning mechanism includes a screw rod movably arranged at an inner position of the positioning frame, knobs are fixedly arranged at both ends of the screw rod, limit strips are fixedly arranged on the front and rear sides of the two groups of moving blocks, and two groups of limit grooves are arranged on the inner side of the positioning frame corresponding to the positions of the four groups of limit strips.

[0010] Preferably, the screw rod passes through both sides of the positioning frame and is connected to the knob, two sets of threaded strips are arranged in opposite directions on the outer side of the screw rod, the screw rod is threadedly connected to the moving block, and the limit strip slides in a limited position on the inner side of the limit groove.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. Through two groups of clamping blocks of different heights and two groups of base plates, it is suitable for the use of lenses of different thicknesses and the use of optical lenses of different degrees. There is no need to place multiple gaskets under the lens to be processed to change its height, which avoids the gasket from detaching from the lens in the rotating state, thereby improving the efficiency of polishing work.

[0013] 2. By rotating the knob, the screw is driven to rotate on the inner side of the positioning frame, and the limit bar slides on the inner side of the limit groove, so that the two sets of moving blocks are brought closer to each other, and the two sets of clamping blocks clamp the optical lens, thereby realizing the positioning of the optical lens and facilitating the use of polishing work. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of an optical lens polishing and positioning fixture of the utility model;

[0015] Figure 2 This is a partial structural schematic diagram of an adjustment mechanism of an optical lens polishing positioning fixture of the utility model;

[0016] Figure 3 This is a schematic diagram of the enlarged structure of part A of an optical lens polishing and positioning fixture of the utility model;

[0017] Figure 4 It is a partial left-view structural schematic diagram of an optical lens polishing and positioning fixture of the utility model.

[0018] In the figure: 1. positioning frame; 2. adjusting mechanism; 21. moving block; 22. movable groove; 23. tooth plate; 24. movable shaft; 25. gear; 26. ratchet; 27. pawl; 28. spring block; 29. ​​adjusting button; 210. fixing plate; 211. clamping block; 212. bottom plate; 3. positioning mechanism; 31. screw; 32. knob; 33. limit strip; 34. limit groove; 4. connecting block. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] like Figure 1-4As shown, an optical lens polishing positioning fixture includes a positioning frame 1, two groups of adjustment mechanisms 2 are arranged on the inner side of the positioning frame 1, positioning mechanisms 3 are arranged on the inner side and both sides of the positioning frame 1, and connecting blocks 4 are fixedly arranged near the lower side of the front and rear ends of the positioning frame 1, and the adjustment mechanism 2 includes a moving block 21 movably arranged at the inner side of the positioning frame 1, a moving groove 22 is opened on the inner side of the moving block 21, a tooth plate 23 is movably arranged on the inner side of the moving groove 22, and a moving shaft 24 is movably arranged on the inner side of the moving block 21 near the tooth plate 23. A gear 25 is fixedly sleeved on the outer side of 24, a ratchet 26 is fixedly connected to the outer side of the movable shaft 24 near the front side, a pawl 27 is movably provided on the front side of the moving block 21 near the upper side of the ratchet 26, a spring block 28 is fixedly provided on the front side of the moving block 21 near the upper position of the pawl 27, an adjusting button 29 is fixedly provided on the outer side of the movable shaft 24 near the rear side, a fixing plate 210 is fixedly provided on the upper end of the tooth plate 23, a clamping block 211 is fixedly provided on one side of the fixing plate 210, and a bottom plate 212 is fixedly provided on one end of the moving block 21.

[0021] In this embodiment, the two groups of adjustment mechanisms 2 are mirror-imaged, the tooth plate 23 is limitedly movable and arranged at the inner side of the movable groove 22, the tooth plate 23 and the gear 25 are meshed, the pawl 27 is engaged with the ratchet 26, the spring block 28 is made of elastic metal material, and several groups of anti-slip strips are arranged on the inner side of the two groups of clamping blocks 211 and the upper ends of the two groups of bottom plates 212, and the shape of the clamping block 211 is semicircular.

[0022] Specifically, first, by rotating the adjusting knob 29, the movable shaft 24 and the gear 25 are driven to rotate, and then the meshing toothed plate 23 is moved upward, thereby pushing the fixed plate 210 and the clamping block 211 to move upward. When downward adjustment is required, press one side of the pawl 27 downward to tilt the engagement point with the ratchet 26, and at the same time tilt the spring block 28, thereby loosening the restriction on the ratchet 26, and by rotating the adjusting knob 29 in the opposite direction, the movable shaft 24 and the gear 25 are driven to rotate in the opposite direction, and the toothed plate 23, the fixed plate 210, and the clamping block 211 are moved downward. Finally, two groups of clamping blocks 211 of different heights are matched with two groups of bottom plates 212 to adapt to the use of lenses of different thicknesses and to meet the use of optical lenses of different degrees. There is no need to place multiple gaskets under the lower part of the lens to be processed to change its height, which avoids the gasket from detaching from the lens when rotating, thereby improving the efficiency of the polishing work.

[0023] In this embodiment, the positioning mechanism 3 includes a screw rod 31 movably arranged at the inner side of the positioning frame 1, knobs 32 are fixedly arranged at both ends of the screw rod 31, limit strips 33 are fixedly arranged on the front and rear sides of the two groups of moving blocks 21, and two groups of limit grooves 34 are arranged on the inner side of the positioning frame 1 corresponding to the positions of the four groups of limit strips 33. The screw rod 31 passes through both sides of the positioning frame 1 and is connected with the knob 32. Two groups of threaded strips are arranged in the opposite direction at the outer side of the screw rod 31. The screw rod 31 is threadedly connected to the moving block 21, and the limit strip 33 is limited to slide at the inner side of the limit groove 34.

[0024] Specifically, by rotating the knob 32, the screw 31 is driven to rotate on the inner side of the positioning frame 1, and the limiting strip 33 slides on the inner side of the limiting groove 34, so that the two groups of moving blocks 21 are brought closer to each other, and the two groups of clamping blocks 211 clamp the optical lens, thereby realizing the positioning of the optical lens and facilitating the use of polishing work.

[0025] Working principle:

[0026] When in use, first rotate the adjusting knob 29 to drive the movable shaft 24 and the gear 25 to rotate, thereby causing the meshing toothed plate 23 to move upward, thereby pushing the fixed plate 210 and the clamping block 211 to move upward. When downward adjustment is required, press one side of the pawl 27 downward to tilt the engagement point with the ratchet 26, and at the same time tilt the spring block 28, thereby releasing the restriction on the ratchet 26, and by rotating the adjusting knob 29 in the opposite direction, the movable shaft 24 and the gear 25 are driven to rotate in the opposite direction, and the toothed plate 23, the fixed plate 210, and the clamping block 211 are moved downward, and finally the two groups of clamping blocks 210 at different heights are passed through. 11 cooperates with two groups of bottom plates 212 to adapt to the use of lenses of different thicknesses, and realizes the use of optical lenses of different degrees. There is no need to place multiple gaskets under the lens to be processed to change its height, which avoids the gasket from detaching from the lens when rotating, thereby improving the efficiency of polishing work. In addition, by rotating the knob 32, the screw 31 is driven to rotate on the inner side of the positioning frame 1, and the limiting strip 33 slides on the inner side of the limiting groove 34, so that the two groups of moving blocks 21 are brought close to each other, and the two groups of clamping blocks 211 clamp the optical lens, thereby realizing the positioning of the optical lens and facilitating the use of polishing work.

[0027] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An optical lens polishing positioning fixture, comprising a positioning frame (1), characterized in that: Two groups of adjustment mechanisms (2) are arranged on the inner side of the positioning frame (1), positioning mechanisms (3) are arranged on the inner side and both sides of the positioning frame (1), and connecting blocks (4) are fixedly arranged near the lower side of the front and rear ends of the positioning frame (1), and the adjustment mechanism (2) comprises a moving block (21) movably arranged at the inner side of the positioning frame (1), a moving groove (22) is provided on the inner side of the moving block (21), a tooth plate (23) is movably arranged on the inner side of the moving groove (22), a moving shaft (24) is movably arranged on the inner side of the moving block (21) near one side of the tooth plate (23), and a tooth plate (24) is fixedly sleeved on the outer side of the moving shaft (24). The movable shaft (24) is fixedly connected to a ratchet wheel (26) at a position near the front side of the outer side of the movable shaft (24); a ratchet pawl (27) is movably provided at a position near the upper side of the ratchet wheel (26) at the front side of the movable block (21); a spring block (28) is fixedly provided at a position near the upper side of the ratchet pawl (27) at the front side of the movable block (21); an adjusting button (29) is fixedly provided at a position near the rear side of the outer side of the movable shaft (24); a fixing plate (210) is fixedly provided at the upper end of the tooth plate (23); a clamping block (211) is fixedly provided at one side of the fixing plate (210); and a bottom plate (212) is fixedly provided at one end of the movable block (21).

2. The optical lens polishing and positioning fixture according to claim 1, characterized in that: The two groups of adjustment mechanisms (2) are arranged in a mirror image, the tooth plate (23) is arranged to be limited and movable at the inner side of the movable groove (22), and the tooth plate (23) and the gear (25) are arranged to be meshed.

3. The optical lens polishing and positioning fixture according to claim 1, characterized in that: The pawl (27) is engaged with the ratchet wheel (26), and the spring block (28) is made of elastic metal material.

4. The optical lens polishing and positioning fixture according to claim 1, characterized in that: A plurality of anti-slip strips are provided on the inner sides of the two groups of clamping blocks (211) and the upper ends of the two groups of bottom plates (212); the clamping blocks (211) are semicircular in shape.

5. The optical lens polishing and positioning fixture according to claim 1, characterized in that: The positioning mechanism (3) comprises a screw rod (31) movably arranged at an inner position of the positioning frame (1), knobs (32) are fixedly arranged at both ends of the screw rod (31), limit strips (33) are fixedly arranged at the front and rear sides of the two groups of moving blocks (21), and two groups of limit slots (34) are arranged at the inner side of the positioning frame (1) at positions corresponding to the four groups of limit strips (33).

6. The optical lens polishing and positioning fixture according to claim 5, characterized in that: The screw rod (31) passes through both sides of the positioning frame (1) and is connected to the knob (32). Two sets of threaded strips are arranged in opposite directions on the outer side of the screw rod (31). The screw rod (31) is threadedly connected to the moving block (21). The limiting strip (33) is limitedly slidable on the inner side of the limiting groove (34).

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