CN104166210B - Quick clamping device of ultra-thin dull and stereotyped of heavy-calibre - Google Patents

Abstract

The invention relates to a fast clamping device for a large-diameter ultra-thin flat plate, which mainly includes a positioning component, a pressing component, a rotating component and a pressing component; precise. During the measurement, the positioning and locking of the plate group can be quickly completed, and each measurement can achieve three-step accurate positioning and installation. When adjusting the attitude of the large-size tablet, its central position remains unchanged, which ensures the high-precision measurement of the tablet index.

Description

A Quick Clamping Device for Large Diameter Ultra-thin Flat Plate

technical field

The invention relates to a fast clamping device for a large-diameter ultra-thin flat plate, especially for the measurement process of a large-diameter diffraction sampling grating.

Background technique

Large-diameter ultra-thin flat plates (diameter greater than 400mm×400mm, thickness 16mm), especially the rapid and precise diagnostic measurement of parameters related to large-diameter diffraction sampling gratings, often require a set of tooling that can be quickly positioned and locked. The tooling should also have a precise attitude adjustment function for adjustment during alignment. The center of the plate can be externalized as the center of the plate group through the structure and used as the origin of the measurement coordinate system. When measuring, it is required that the azimuth axis of the plate passes through the origin of the coordinates, so that the center of the plate does not change when it is rotated.

Although the general edge multi-point support method to fix flat glass can reasonably distribute the installation stress, it is difficult to provide an accurate positioning reference. The commonly used two-dimensional adjustment mount obviously takes up a lot of space for such a large-diameter ultra-thin plate, and it is difficult to ensure that the rotation axis always passes through the center of the plate when adjusting the orientation.

Contents of the invention

In order to solve the technical problems described in the background art, the present invention provides a fast clamping device for large-diameter ultra-thin flat plates.

Concrete technical solution of the present invention is as follows:

The fast clamping and attitude fine-tuning tooling of the large-diameter ultra-thin flat plate includes a main positioning plate vertically arranged on the base of the positioning plate for clamping, positioning and attitude adjustment of the large-diameter ultra-thin flat plate. There are positioning components for clamping and positioning large-caliber ultra-thin flat plates and pressing components for pressing large-caliber ultra-thin flat plates on the main positioning plate; the base of the positioning plate is provided with a For the rotating components on the optical table that can rotate relative to the optical table, the centerline of the rotation should always pass through the center of the large-aperture ultra-thin flat plate.

The above-mentioned positioning assembly includes a left positioning block, a lower positioning block, a right fixing block and a tightening screw. The left positioning block is arranged on the left side of the main positioning plate for positioning the left side of the large-diameter ultra-thin flat plate, and the lower positioning block is set The side of the main positioning plate close to the base of the positioning plate is used to position the underside of the large-diameter ultra-thin flat plate; the tightening screw is arranged on the right fixing block for positioning the large-diameter ultra-thin flat plate installed on the main positioning plate Carry out tight positioning.

The above-mentioned pressing assembly includes at least three pressing groups arranged on the corners of the main positioning plate. The seat screw is fixed on the main positioning plate by screws. The screw is located on the side away from the large-diameter ultra-thin plate. The screw passes through the main positioning plate, and the disc spring is sleeved on the screw; Cavity; the compression hook sleeve includes a sleeve and a compression hook, and the sleeve is arranged in the cavity; the compression knob is set on the screw with a seat through a threaded connection, and the rotation of the compression knob pushes the compression hook to be fixed Slide the bushing until the compression hook compresses the corners of the large-diameter ultra-thin flat plate.

The above-mentioned rotating assembly includes a base positioning block and a rotating shaft; the base of the positioning plate is provided with a groove matching the base positioning block, the base positioning block is fixed on the optical table, and the rotating shaft is arranged on the base positioning block and passes through the positioning seat bottom plate and The main positioning plate is tangent, and the center line of the rotating shaft always passes through the center of the large-diameter ultra-thin flat plate.

A reinforcing angle plate is arranged between the above-mentioned positioning plate base and the main positioning plate.

The above pressing assembly includes four pressing groups arranged symmetrically on the four corners of the main positioning plate.

Above-mentioned disc spring is made up of 20 sub-disc springs of outer diameter 8mm.

The advantages of the present invention are:

The fast clamping device for the large-caliber ultra-thin flat plate provided by the invention is simple in operation and accurate in positioning. During the measurement, the positioning and locking of the plate group can be quickly completed, and each measurement can achieve three-step accurate positioning and installation. When adjusting the attitude of the large-size tablet, its central position remains unchanged, which ensures the high-precision measurement of the tablet index.

Description of drawings

Figure 1 is a structural diagram of the tooling of the measurement and positioning group;

Figure 2 is a side sectional view of the tooling of the measurement and positioning group;

Fig. 3 is a structural diagram of the tooling pressing group of the measuring and positioning group;

Figure 4 is a schematic diagram of the positioning and installation of the plate group.

The details of the accompanying drawings are as follows:

1—main positioning plate, 2—bottom plate of positioning seat, 3—reinforcing angle plate, 4—left positioning block, 5—lower positioning block, 6—right fixing block, 7—top tightening screw, 8—positioning block of measuring seat group, 9—Measuring seat group rotating shaft, 31—Screw with seat, 32—Fixed bushing, 33—Clamping hook sleeve, 34—Clamping knob, 35—Disc spring group, 41—Platform group, 42—Measuring and positioning group.

detailed description

The present invention can quickly complete the positioning and locking of the plate group through the simple operation of "one leaning, two pushing, three pressing".

As shown in Figure 1, "one leaning" means that the three surfaces of the plate group are respectively supported on the main positioning plate, left positioning block and lower positioning block; "two tops" are tightening screw to tighten the plate group from the right side; "Three pressing" is to rotate the pressing knob to make the pressing assembly support the plate group from the front. In order to ensure the positioning accuracy of the tooling, each positioning block is first installed on the positioning support, and then the positioning surface of the positioning block is trimmed to achieve the specified shape and position tolerance accuracy. The use of the disc spring ensures that the compression hook sleeve can slide up and down in the fixed bushing to achieve the purpose of compression or relaxation of the plate group.

Specifically, the fast clamping device for the large-diameter ultra-thin flat plate includes a positioning support, a positioning group and a pressing group. The positioning support is connected by bolts to the bottom plate of the positioning seat, the main positioning plate and the reinforcing angle plate, and is in an "L" shape. The plate group (with inner frame) is suspended on the positioning support and rests on the main positioning plate.

The positioning assembly is composed of a left positioning block, a lower positioning block, a right fixing block and a top tightening screw. The left positioning block and the lower positioning block are used as the positioning datum in the vertical plane to ensure the precise positioning of the plate, and the tightening screw is installed in the screw hole of the right fixing block, and passes through the right fixing block from the right to tighten the inner frame. Nylon 1010 is selected for the top tightening screw.

The pressing assembly is distributed at the four corners of the main positioning plate, and is composed of a screw rod with a seat, a fixed bush, a pressing hook sleeve, a pressing knob and a disc spring group. There is a screw hole in the middle of the compression knob, which is installed on the screw rod with seat. Disc spring group selects outer diameter D=8mm disc spring, 20 per group, wear on the screw rod with seat. Adjusting the number of disc springs in each group can effectively control the adjustment amount of the pressing group. Rotate the compression knob, compress the disc spring group in the compression hook sleeve, push the compression hook sleeve to slide in the fixed bushing, until the hook sleeve presses the four corners of the inner frame from the front.

In principle, the present invention establishes a reference rotation axis for the plate azimuth adjustment by designing the positioning block of the measuring seat group and the rotating shaft of the measuring seat group. The positioning block of the measuring seat group is fixed on the optical table and is located in the groove under the bottom plate of the positioning seat. The rotating shaft of the measuring seat group is installed on the positioning block of the measuring seat group, and simultaneously passes through the through hole on the bottom plate of the positioning seat and is tangent to the main positioning plate. When debugging the optical path, the entire measuring and positioning tooling group rotates around the rotating shaft of the measuring seat group, and the centerline of the rotating shaft always passes through the center of the plate.

In summary, the present invention realizes the azimuth adjustment of the plate group by positioning the rotating shaft, ensures the vertical accuracy of the mounting hole matched with the rotating shaft through processing, and at the same time ensures that the upper end of the rotating shaft is tangent to the main positioning plate, and then doubles the actual measured thickness of the plate. To process the outer diameter of the upper end of the shaft. In this way, the rotating shaft remains stationary when the entire positioning assembly rotates, and the center line of the rotating shaft always passes through the center of the flat panel, thereby realizing high-precision attitude adjustment.

Claims (6)

1. A fast clamping device for a large-caliber ultra-thin flat plate, characterized in that: it includes a main positioning plate vertically arranged on the base of the positioning plate for clamping, positioning and attitude adjustment of the large-diameter ultra-thin flat plate, the main positioning The board is provided with a positioning assembly for clamping and positioning the large-caliber ultra-thin flat plate and a pressing assembly for pressing the large-diameter ultra-thin flat plate on the main positioning plate; the base of the positioning plate is provided with a tooling The rotating assembly fixed on the optical table and can rotate relative to the optical table, the center line of the rotation should always pass through the center of the large-diameter ultra-thin plate; the positioning assembly includes a left positioning block, a lower positioning block, a right fixing block and Tighten the screw, the left positioning block is set on the left side of the main positioning plate for positioning the left side of the large-caliber ultra-thin flat plate, and the lower positioning block is set on the side of the main positioning plate close to the base of the positioning plate for positioning the large-diameter The lower side of the ultra-thin flat plate is positioned; the tightening screw is arranged on the right fixing block for tightening and positioning the large-diameter ultra-thin flat plate installed on the main positioning plate. 2. The fast clamping device for large-diameter ultra-thin flat plates according to claim 1, characterized in that: the pressing assembly includes at least three pressing groups arranged on the corners of the main positioning plate, the pressing The set includes a screw with seat, a fixed bush, a compression hook sleeve, a compression knob and a disc spring; the screw with a seat is fixed on the main positioning plate by screws, and the screw is located on the side away from the large-diameter ultra-thin flat plate. The screw passes through the main positioning plate, and the disc spring is sleeved on the screw with seat; the fixed bush is sleeved on the outside of the screw with seat and forms a cavity with the screw with seat; the compression hook sleeve includes a sleeve and a compression hook. The tube is set in the cavity; the pressing knob is set on the screw rod with seat through threaded connection, and the rotating pressing knob pushes the pressing hook sleeve to slide in the fixed bushing until the pressing hook presses the edge of the large-diameter ultra-thin plate horn. 3. The fast clamping device for large-diameter ultra-thin flat plates according to claim 1, characterized in that: the rotating assembly includes a base positioning block and a rotating shaft; slot, the base positioning block is fixed on the optical platform, the rotating shaft is arranged on the base positioning block and passes through the positioning seat bottom plate to be tangent to the main positioning plate, and the center line of the rotating shaft always passes through the center of the large-diameter ultra-thin flat plate. 4. The fast clamping device for large-diameter ultra-thin flat plates according to claim 1, wherein the pressing assembly includes four pressing groups arranged symmetrically on the four corners of the main positioning plate. 5. The fast clamping device for large-diameter ultra-thin flat plates according to claim 1, characterized in that: a reinforcing angle plate is arranged between the positioning plate base and the main positioning plate. 6. The fast clamping device for large-diameter ultra-thin flat plates according to claim 2, wherein the disc spring is composed of 20 sub-disc springs with an outer diameter of 8 mm.