High-precision positioning device for optical protective cover

Abstract

The utility model relates to the technical field of optical protective cover machining auxiliary equipment, in particular to an optical protective cover high-precision positioning device which comprises a bottom plate, a supporting block is fixed to the middle end of the top of the bottom plate, a pressure-resistant block is fixed to the top of the supporting block, and a positioning block is fixed to the middle end of the top of the pressure-resistant block. A positioning groove is formed in the top of the positioning block, and a positioning column used for being inserted into the positioning groove is arranged in the middle of the bottom face of the optical protection cover; the flange edge of the optical protection cover is arranged on the pressure-resistant block through a pressing plate, and the pressing plate is driven by a lifting assembly. According to the utility model, the size of the positioning column is smaller and is more stable relative to the outer diameter of the flange edge of the optical protective cover, so that the injection-molded positioning column is small in error and high in precision, the positioning column is matched with the positioning groove, and the precision of determining a processing original point can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical protection cover processing auxiliary equipment, in particular to a high-precision positioning device for an optical protection cover. Background Technique

[0002] At present, the main structure of the optical protection cover tooling fixture is divided into two parts: fixing and positioning. The fixing part is used to fix the product to ensure that the position of the product does not shift during the processing process, while the positioning part is used to determine the machining origin of the numerical control machine tool. Usually, the outer circle of the flange edge of the optical protection cover is matched with the circular groove on the tooling to determine the machining origin. Due to the large outer diameter tolerance (more than ±0.2) and poor roundness (more than 0.6) of the flange edge of the injection-molded optical protection cover, it is very difficult to ensure good machining accuracy when positioning with the outer circle, resulting in serious eccentricity of the processed product and affecting the installation and use of customers. Content of the Utility Model

[0003] In order to solve the technical problem of low precision caused by matching the outer circle of the flange edge of the optical protection cover with the circular groove on the tooling in the background technique, the utility model provides a high-precision positioning device for an optical protection cover.

[0004] The utility model is realized by adopting the following technical solutions: A high-precision positioning device for an optical protection cover, including a bottom plate, a support block is fixedly arranged in the middle of the top of the bottom plate, a compression-resistant block is fixedly arranged on the top of the support block, and a positioning block is fixedly arranged in the middle of the top of the compression-resistant block; a positioning groove is arranged on the top of the positioning block, and a positioning column for inserting into the positioning groove is arranged in the middle of the bottom surface of the optical protection cover; the flange edge of the optical protection cover is arranged on the compression-resistant block through a pressing plate, and the pressing plate is driven by a lifting component.

[0005] Preferably, the pressing plate includes an annular block pressing on the flange edge, and extension blocks are arranged at both the left and right ends of the annular block, and moving blocks are fixedly arranged at the tops of the extension blocks through connecting blocks.

[0006] Preferably, the lifting component includes lifting cylinders fixedly arranged at both the left and right ends of the bottom plate, and the push plates of the two lifting cylinders are respectively fixedly connected with the corresponding moving blocks.

[0007] Preferably, both the upper and lower ends of the connecting block are connected to the moving block and the extension block through bolts.

[0008] Preferably, the diameter of the compression-resistant block is larger than the diameter of the flange edge.

[0009] Advantages of the Utility Model:

[0010] The present utility model provides an embodiment. The top of the positioning block has a positioning groove, and the middle part of the bottom surface of the optical protection cover has a positioning post for inserting into the positioning groove. Since the size of the positioning post is small and relatively stable compared to the outer diameter of the flange of the optical protection cover, the error of the injection-molded positioning post is small and the precision is high. The cooperation between the positioning post and the positioning groove can improve the precision of determining the machining origin. The lifting assembly can drive the pressing plate to move downward, so that the optical protection cover can be pressed on the compression block, thereby fixing the optical protection cover. The flange can be pressed on the compression block through the circular ring block, so that the stress area of the flange is large, and the optical protection cover can be fixed better.

[0011] In an embodiment of the present utility model, both the upper and lower ends of the connecting block are connected to the moving block and the extension block through bolts, which is convenient for disassembling the connecting block, and thus can facilitate the replacement of the circular ring block.

[0012] In the present utility model, since the size of the positioning post is small and relatively stable compared to the outer diameter of the flange of the optical protection cover, the error of the injection-molded positioning post is small and the precision is high. The cooperation between the positioning post and the positioning groove can improve the precision of determining the machining origin. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the present utility model.

[0014] Figure 2 is a schematic structural diagram of the optical protection cover.

[0015] Figure 3 is a schematic structural diagram of the present utility model (without the optical protection cover). DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The present utility model will be further described below with reference to the drawings.

[0017] Such as Figures 1 to 3, the present utility model provides an embodiment: a high-precision positioning device for an optical protective cover, which includes a bottom plate 1. A support block 2 is fixedly arranged in the middle of the top of the bottom plate 1. A pressure-resistant block 3 is fixedly arranged on the top of the support block 2. A positioning block 4 is fixedly arranged in the middle of the top of the pressure-resistant block 3. A positioning groove 5 is arranged at the top of the positioning block 4. A positioning post 61 for inserting into the positioning groove 5 is arranged in the middle of the bottom surface of the optical protective cover 6. Since the size of the positioning post 61 is small and relatively stable compared with the outer diameter of the flange 62 of the optical protective cover 6, the injection-molded positioning post 61 has small errors and high precision, so that the positioning post 61 and the positioning groove 5 are matched, and the precision of determining the processing origin can be improved. The flange 62 of the optical protective cover 6 is arranged on the pressure-resistant block 3 through a pressing plate 7. The pressing plate 7 is driven by a lifting assembly 8. The lifting assembly 8 can drive the pressing plate 7 to move downward, so that the optical protective cover 6 can be pressed on the pressure-resistant block 3, thereby fixing the optical protective cover 6. When the optical protective cover 6 needs to be taken out, the lifting assembly 8 drives the pressing plate 7 to move upward, so as to relieve the pressure on the flange 62 and facilitate taking out the optical protective cover 6.

[0018] The pressing plate 7 includes an annular block 71 pressing on the flange 62. Through the annular block 71, the flange 62 can be pressed on the pressure-resistant block 3, so that the stress area of the flange 62 is large, and the optical protective cover 6 can be better fixed. Extension blocks 72 are arranged at the left and right ends of the annular block 71. The extension blocks 72 are used as handles of the annular block 71 to facilitate connection with a connecting block 73. A moving block 74 is fixedly arranged at the top of the extension block 72 through the connecting block 73. The optical protective cover 6 is placed on the pressure-resistant block 3, so that the positioning post 61 is inserted into the positioning groove 5, and then the annular block 71 is sleeved on the optical protective cover 6, so that the annular block 71 presses the flange 62 on the pressure-resistant block 3.

[0019] In an embodiment of the present utility model, the lifting assembly 8 includes lifting cylinders 81 fixedly arranged at the left and right ends of the bottom plate 1. The model of the lifting cylinder 81 can be MGQM20-125, but is not limited thereto. The push plates of the two lifting cylinders 81 are respectively fixedly connected with the corresponding moving blocks 74. The lifting cylinder 81 can drive the moving block 74 to move up and down, so as to drive the connecting block 73 to move up and down, so as to drive the extension block 72 to move up and down, and further drive the annular block 71 to move up and down.

[0020] In an embodiment of the present utility model, the upper and lower ends of the connecting block 73 are connected with the moving block 74 and the extension block 72 through bolts 9 respectively, which is convenient for disassembling the connecting block 73, and thus convenient for replacing the annular block 71.

[0021] In an embodiment of the present utility model, the diameter of the pressure-resistant block 3 is larger than the diameter of the flange 62, which is convenient for pressing the flange 62 on the pressure-resistant block 3.

[0022] The above are only the preferred embodiments of the present utility model, and should not be construed as limiting the present application. Any equivalent changes and modifications made in accordance with the scope of the patent application of the present utility model shall fall within the scope covered by the present utility model.

Claims

1. A high-precision positioning device for an optical protective cover, characterized in that: It includes a base plate, a support block is fixed to the middle of the top of the base plate, an anti-pressure block is fixed to the top of the support block, and a positioning block is fixed to the middle of the top of the anti-pressure block; the top of the positioning block has a positioning groove, and the middle of the bottom surface of the optical protective cover has a positioning column for inserting into the positioning groove; the flange edge of the optical protective cover is set on the anti-pressure block via a pressure plate, and the pressure plate is driven by a lifting assembly.

2. The high-precision positioning device for an optical protective cover according to claim 1, characterized in that: The pressing plate comprises a circular ring block pressed on the flange edge, both left and right ends of the circular ring block are provided with extension blocks, and the top of the extension block is fixed with a moving block via a connecting block.

3. The high-precision positioning device for an optical protective cover according to claim 2, characterized in that: The lifting assembly comprises lifting cylinders fixed on the left and right ends of the bottom plate, and the push plates of the two lifting cylinders are fixedly connected to the corresponding moving blocks respectively.

4. The high-precision positioning device for an optical protective cover according to claim 2, characterized in that: The upper and lower ends of the connection block are connected to the moving block and the extension block via bolts.

5. The high-precision positioning device for an optical protective cover according to claim 1, characterized in that: The diameter of the compression block is greater than the diameter of the flange edge.

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