Universal vacuum adsorption tool

Abstract

The utility model provides a universal type vacuum adsorption tool. The universal type vacuum adsorption tool comprises a vacuum chuck; a plurality of concentric vacuum adsorption grooves with different diameters are formed in one surface of the vacuum suction cup, each vacuum adsorption groove is provided with a corresponding sealing ring, and the vacuum adsorption grooves are used for adsorbing and fixing a workpiece to be machined; the sealing rings are placed in the corresponding vacuum adsorption grooves in a sealed mode, and the height of the edges of the placed sealing rings is smaller than or equal to the height of the working faces of the vacuum suction cups. A vacuum adsorption through hole penetrating through the two opposite surfaces is formed in the center position of the vacuum suction cup. The tool is a universal stress-free vacuum adsorption tool without clamping or bonding, workpieces with different diameters can be subjected to vacuum adsorption through vacuum adsorption grooves with different diameters, the universality is high, and the application range is wide.

Description

Technical Field

[0001] The present application relates to the field of optical processing, and in particular to a universal vacuum adsorption tooling. Background Art

[0002] With the continuous increase in the number and accuracy of optical systems, more stringent requirements are placed on the surface accuracy and form tolerance of optical workpieces. When processing high-precision aspheric optical components, the workpiece is usually fixed by bonding the upper plate, but the risk of deformation caused by the release of bonding stress after processing the lower plate is significantly increased. When the processing time is long, the adhesive has weak fluidity at room temperature, and when performing surface correction, the processing tools stay at different positions and directions of the optical component for different times, and the pressure on the adhesive is inconsistent, resulting in the displacement of the workpiece position, increasing the risk of workpiece edge thickness difference and verticality deviation, and optical workpieces of different sizes need to be equipped with tooling of corresponding sizes, resulting in waste of tooling. Utility Model Content

[0003] One of the purposes of the present application is to provide a universal vacuum adsorption tooling, which uses vacuum adsorption grooves of different diameters to vacuum adsorb workpieces of different diameters. It has strong versatility and places the workpiece to be processed directly on the working surface of the vacuum suction cup without heating, gluing, or local external force, thereby achieving stress-free installation of the workpiece to be processed and solving the problem of deformation of the workpiece to be processed caused by the bonding stress of the upper and lower plates.

[0004] The technical solution of this application is:

[0005] A universal vacuum adsorption tooling comprises a vacuum suction cup; a surface of the vacuum suction cup is provided with a plurality of concentrically arranged vacuum adsorption grooves of different diameters, and each of the vacuum adsorption grooves is provided with a corresponding sealing ring, and the vacuum adsorption grooves are used to adsorb and fix the workpiece to be processed; the sealing ring is sealed and placed in the corresponding vacuum adsorption groove, and the height of the edge of the sealing ring after placement is lower than or equal to the height of the working surface of the vacuum suction cup; a vacuum adsorption through hole penetrating two opposite surfaces is provided at the center position of the vacuum suction cup.

[0006] As a technical solution of the present application, the other surface of the vacuum suction cup has multiple screw holes connected to the machine tool spindle, and the multiple screw holes are arranged around the vacuum adsorption through hole, and the distance between two adjacent screw holes is the same.

[0007] As a technical solution of the present application, the vacuum suction cup has a plurality of spaced positioning seats on its circumferential side, and a positioning block is detachably mounted on each of the positioning seats, and the plurality of positioning blocks are used to position the workpiece to be processed.

[0008] As a technical solution of the present application, the positioning seat is provided with two rows of spaced-apart positioning screw holes; the positioning block is provided with two spaced-apart strip holes running through the top and bottom, each of the strip holes corresponds to each row of the positioning screw holes; the two strip holes are connected to the corresponding positioning screw holes by screws.

[0009] As a technical solution of the present application, a groove is provided in the middle of the positioning seat, and the opening of the groove faces upward and is located between the two rows of positioning screw holes.

[0010] As a technical solution of the present application, there are four positioning seats, which are arranged at equal intervals on the circumference of the vacuum suction cup.

[0011] As a technical solution of the present application, there are four positioning blocks, and each of the positioning blocks includes a positioning block and a limiting block; the positioning block is detachably mounted on the positioning seat by screws; the limiting block is arranged at the edge of the upper surface of the positioning block.

[0012] As a technical solution of the present application, the two strip-shaped holes are arranged on the positioning block in parallel and at intervals, and are respectively close to two opposite sides of the positioning block.

[0013] As a technical solution of the present application, the vacuum adsorption groove is in the shape of a circular groove, and has a first inner ring surface and a second inner ring surface, the diameter of the first inner ring surface is larger than the diameter of the second inner ring surface, and a chamfer is provided at the intersection of the first inner ring surface and the top surface of the vacuum adsorption groove.

[0014] Beneficial effects of this application:

[0015] In the universal vacuum adsorption tooling of the present application, the workpiece to be processed is directly placed on the working surface of the vacuum suction cup without heating, gluing, or local external force, thereby achieving stress-free installation of the workpiece to be processed and solving the problem of deformation of the workpiece to be processed due to the bonding stress of the upper and lower plates. At the same time, the tooling is designed with vacuum adsorption grooves of different diameters for workpieces of different sizes to be processed, thereby improving the versatility of the tooling and making it applicable to the processing of workpieces of different sizes. In addition, the tooling is designed with multiple positioning blocks with adjustable installation positions around the vacuum suction cup, which can not only ensure that the radial error of the workpiece installation is ≤0.01mm, but also meet the stability of repeated positioning, so that the edge thickness difference and verticality of the workpiece to be processed meet the process requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of a universal vacuum adsorption tooling provided in an embodiment of the present application;

[0018] Figure 2 A schematic diagram of a first angle of a universal vacuum adsorption tool provided in an embodiment of the present application;

[0019] Figure 3 A second angle schematic diagram of the universal vacuum adsorption tooling provided in an embodiment of the present application;

[0020] Figure 4 A schematic diagram of a positioning block provided in an embodiment of the present application.

[0021] Icons: 1-vacuum suction cup; 2-vacuum adsorption groove; 3-sealing ring; 4-vacuum adsorption through hole; 5-screw hole; 6-positioning seat; 7-positioning screw hole; 8-strip hole; 9-groove; 10-positioning block; 11-limiting block; 12-first inner ring surface; 13-second inner ring surface; 14-chamfer. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0025] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0026] In addition, in the present application, unless otherwise clearly specified and limited, the first feature being above or below the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0027] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "disposed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0029] Example:

[0030] Please refer to Figure 1 , with reference Figures 2 to 4The present application provides a universal vacuum adsorption tooling, which includes a vacuum suction cup 1; wherein, a plurality of concentrically arranged vacuum adsorption grooves 2 with different diameters are provided on one surface of the vacuum suction cup 1, and each vacuum adsorption groove 2 is provided with a corresponding sealing ring 3, and the vacuum adsorption groove 2 is used to adsorb and fix the workpiece to be processed, which can meet the adsorption and fixation of workpieces with different diameters; at the same time, the sealing ring 3 is sealed and placed in the corresponding vacuum adsorption groove 2, and the height of the edge of the sealing ring 3 after placement is lower than or equal to the height of the working surface of the vacuum suction cup 1; and, a vacuum adsorption through hole 4 penetrating the two relative surfaces is provided at the center position of the vacuum suction cup 1. In addition, a plurality of screw holes 5 connected to the main shaft of the machine tool are provided on the other relative surface of the vacuum suction cup 1, and the plurality of screw holes 5 are arranged around the vacuum adsorption through hole 4, and the spacing between two adjacent screw holes 5 is the same.

[0031] Furthermore, a plurality of positioning seats 6 are provided at intervals on the circumference of the vacuum suction cup 1 , and a positioning block is detachably mounted on each positioning seat 6 , and the plurality of positioning blocks are used to position the workpiece to be processed.

[0032] Specifically, in this embodiment, there are four positioning seats 6, which are evenly spaced on the circumference of the vacuum suction cup 1; two rows of spaced positioning screw holes 7 are provided on the positioning seat 6, and a groove 9 is provided in the middle of the positioning seat 6, the groove 9 opens upward and is located between the two rows of positioning screw holes 7; there are four positioning blocks, and each positioning block includes a positioning block 10 and a limiting block 11; the positioning block 10 is provided with two spaced bar holes 8 that run through the top and bottom, and each bar hole 8 corresponds to each row of positioning screw holes 7; the two bar holes 8 are connected to the corresponding positioning screw holes 7 by screws, and the positioning block 10 is detachably mounted on the positioning seat 6 by screws; the limiting block 11 is provided at the edge of the upper surface of the positioning block 10. The positioning block can flexibly adjust its fixed position on the positioning seat 6 through the bar holes 8 and screws.

[0033] It should be noted that the two strip-shaped holes 8 are arranged on the positioning block 10 in parallel and at intervals, and are respectively close to two opposite sides of the positioning block 10 .

[0034] In addition, the vacuum adsorption groove 2 is in the shape of a circular groove, and the vacuum adsorption groove 2 has a first inner ring surface 12 and a second inner ring surface 13. The diameter of the first inner ring surface 12 is greater than the diameter of the second inner ring surface 13, and a chamfer 14 is provided at the intersection of the first inner ring surface 12 and the top surface of the vacuum adsorption groove 2. The chamfer 14 can increase the force-bearing area of ​​the edge of the sealing ring 3, thereby making its sealing effect better.

[0035] The working principle of this stress-free universal vacuum adsorption tooling for CNC milling and polishing is as follows:

[0036] First, place the vacuum suction cup 1 on the machine tool spindle of the workpiece to be processed, and align the screw hole 5 on the vacuum suction cup 1 connected to the spindle with the screw hole 5 on the machine tool spindle, and then install the positioning screw on the vacuum suction cup 1 to fix the vacuum suction cup 1 on the machine tool spindle;

[0037] When it is necessary to position and install the workpiece to be processed, first select a suitable vacuum adsorption groove 2 and a sealing ring 3 according to the size of the workpiece, place the sealing ring 3 in the corresponding vacuum adsorption groove 2, and make the bottom surface of the sealing ring 3 fit with the bottom surface of the vacuum adsorption groove 2 to ensure that the edge of the sealing ring 3 does not exceed the working surface of the vacuum suction cup 1;

[0038] Place the workpiece to be processed on the working surface of the vacuum suction cup 1, and ensure that the sealing ring 3 is located on the inner side of the bottom surface of the workpiece to be processed; first, roughly adjust the position of the workpiece to be processed so that the center of the workpiece to be processed is roughly located at the center of the vacuum suction cup 1; then fine-adjust the position of the workpiece to be processed by positioning with a table, so that the deviation between the center of the workpiece to be processed and the center of the vacuum suction cup 1 is ≤0.02mm;

[0039] Start the vacuum adsorption button of the machine tool for the workpiece to be processed, first set the vacuum adsorption pressure to 0.8 bar, adsorb the workpiece to be processed on the vacuum suction cup 1 through the vacuum adsorption through hole 4, and check whether the workpiece to be processed is firmly adsorbed; then evenly place four positioning blocks around the workpiece to be processed, so that the four positioning blocks are attached to the edges of the workpiece to be processed; then align the strip hole 8 of the positioning block with the positioning screw hole 7 on the positioning seat 6, keep the relative position of the positioning block and the positioning seat 6 unchanged, and fix the positioning block to the positioning seat 6 by screws, and the positioning of the workpiece to be processed is completed.

[0040] In summary, in the universal vacuum adsorption tooling of the present application, the workpiece to be processed is directly placed on the working surface of the vacuum suction cup 1, without heating, gluing, or bearing local external force, thereby achieving stress-free installation of the workpiece to be processed and solving the problem of deformation of the workpiece to be processed due to the bonding stress of the upper and lower plates. At the same time, the tooling is designed with vacuum adsorption grooves 2 of different diameters for workpieces to be processed of different sizes, thereby improving the versatility of the tooling and making it applicable to the processing of workpieces of different sizes. In addition, the tooling is designed with multiple positioning blocks with adjustable installation positions around the vacuum suction cup 1, which can not only ensure that the radial error of the workpiece installation is ≤0.01mm, but also meet the stability of repeated positioning, so that the edge thickness difference and verticality of the workpiece to be processed meet the process requirements.

[0041] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A universal vacuum adsorption tool, characterized in that: It comprises a vacuum suction cup; a surface of the vacuum suction cup is provided with a plurality of concentrically arranged vacuum adsorption grooves of different diameters, and each of the vacuum adsorption grooves is provided with a corresponding sealing ring, and the vacuum adsorption groove is used to adsorb and fix the workpiece to be processed; the sealing ring is sealed and placed in the corresponding vacuum adsorption groove, and the height of the edge of the sealing ring after placement is lower than or equal to the height of the working surface of the vacuum suction cup; a vacuum adsorption through hole penetrating two opposite surfaces is provided at the center position of the vacuum suction cup.

2. The universal vacuum adsorption tooling according to claim 1 is characterized in that: The other surface of the vacuum suction cup is provided with a plurality of screw holes connected with the main shaft of the machine tool. The plurality of screw holes are arranged around the vacuum adsorption through hole, and the distances between two adjacent screw holes are the same.

3. The universal vacuum adsorption tooling according to claim 1, characterized in that: A plurality of spaced positioning seats are provided on the circumferential side of the vacuum suction cup, and a positioning block is detachably mounted on each of the positioning seats. The plurality of positioning blocks are used to position the workpiece to be processed.

4. The universal vacuum adsorption tooling according to claim 3 is characterized in that: The positioning seat is provided with two rows of spaced positioning screw holes; the positioning block is provided with two spaced strip holes that run through the top and bottom, each of the strip holes corresponds to each row of the positioning screw holes; the two strip holes are connected to the corresponding positioning screw holes by screws.

5. The universal vacuum adsorption tooling according to claim 4 is characterized in that: A groove is provided in the middle of the positioning seat, the opening of the groove faces upward and is located between the two rows of positioning screw holes.

6. The universal vacuum adsorption tooling according to claim 3, characterized in that: There are four positioning seats, which are arranged at equal intervals on the circumference of the vacuum suction cup.

7. The universal vacuum adsorption tooling according to claim 4, characterized in that: There are four positioning blocks, and each of the positioning blocks includes a positioning block and a limiting block; the positioning block is detachably mounted on the positioning seat by means of screws; and the limiting block is arranged at the edge of the upper surface of the positioning block.

8. The universal vacuum adsorption tooling according to claim 7, characterized in that: The two strip-shaped holes are arranged on the positioning block in parallel and at intervals, and are respectively close to two opposite sides of the positioning block.

9. The universal vacuum adsorption tooling according to claim 1, characterized in that: The vacuum adsorption groove is in the shape of a circular ring, and has a first inner ring surface and a second inner ring surface. The diameter of the first inner ring surface is greater than the diameter of the second inner ring surface, and a chamfer is provided at the intersection of the first inner ring surface and the top surface of the vacuum adsorption groove.

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