Crystal cutting orientation adjusting device

Abstract

The utility model discloses a crystal cutting orientation adjusting device which comprises a cutting platform and a base, the cutting platform is used for bearing a crystal to be cut, and an electric angular table, an electric rotating table and a translation table are arranged between the cutting platform and the base; the electric angle table achieves angle swing in the direction perpendicular to the cutting platform. The electric rotating table drives the cutting platform to rotate; the translation table is arranged on the base and used for controlling the cutting platform to translate front and back. According to the utility model, the position adjustment of the crystal in the X, Y and Z directions during directional processing can be realized, the clamp and the crystal do not need to be integrally taken down, and the cutting efficiency is improved, so that the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of crystal processing, in particular to a crystal cutting crystal orientation adjusting device. Background Art

[0002] With the continuous development of science and technology, crystal materials such as laser crystals, piezoelectric crystals, acousto-optic crystals, and semiconductor crystals have increasingly extensive application fields due to their rich optoelectronic properties. Due to the difference in atomic arrangement and bonding mechanism, the intrinsic anisotropic characteristics of crystals, that is, crystals have different physical properties such as optical, electrical, and mechanical properties in different directions. In actual applications, according to different usage purposes or application scenarios, the crystal needs to be processed in different crystal orientations and crystal planes, and then different devices are prepared through processes such as cutting, grinding, polishing, and coating, and then applied. Taking the laser crystal TGG material as an example, due to the material characteristics of its cubic crystal, the (111) direction must be used as the optical axis during operation to obtain the best light transmission efficiency.

[0003] At present, there are various methods for crystal orientation. The most widely used one is to use a cutting machine in cooperation with an x-ray orientator for cutting and orientation. Usually, the crystal is fixed on a special fixture, first cut on the cutting machine in a rough direction to obtain a test plane, then the whole is taken down for orientation testing, calculate the angle difference from the theoretical crystal orientation, adjust the angle, then cut again, and test again. After repeating many times, the orientation is completed.

[0004] In the prior art, usually each test requires taking down the fixture and the crystal as a whole, completing the test on the x-ray orientator, adjusting, putting it back on the cutting machine for cutting, and then taking it down for testing again. Only after repeating many times like this can the orientation be completed. The above process has problems such as poor test accuracy, low efficiency, large material loss, especially for large-size crystals, which are heavy and there is a risk of crystal damage during the handling process.

[0005] Therefore, how to improve the accuracy and efficiency of crystal cutting crystal orientation adjustment is a technical problem to be solved. Summary of the Utility Model

[0006] In view of the above deficiencies of the prior art, the purpose of the present utility model is to design a crystal cutting crystal orientation adjusting device, which can achieve precise cutting, improve efficiency, reduce the risk of crystal damage, and save production costs.

[0007] To achieve the above object, the technical solution provided by the present utility model is as follows: A crystal cutting crystal orientation adjusting device, including a cutting platform and a base. The cutting platform is used to carry the crystal to be cut. An electric angular position table, an electric rotary table, and a translation table are provided between the cutting platform and the base. The electric rotary table is placed below the cutting platform and includes a rotating mechanism that can horizontally rotate around the Z-axis to drive the cutting platform to rotate. The electric angular position table is fixed below the electric rotary table and swings at an angle in the direction perpendicular to the cutting platform. The translation table is placed on the base and fixedly connected to the electric rotary table to control the front-back translation of the cutting platform. Or place the electric angular position table below the cutting platform, and from top to bottom are the cutting platform, the electric angular position table, the electric rotary table, the translation table, and the base.

[0008] Further, the cutting platform includes a crystal clamping and fixing part, which includes a semi-circular fixing aluminum ring with adjustable size, a plastic soft pad is added in the middle, and there are openings on both sides, and it is fixed on the cutting platform with screws.

[0009] Further, the electric angular position table includes a stepping motor, a worm gear, a worm, an elastic coupling, and a table top. The stepping motor is connected to the worm through an elastic coupling, the worm is connected to the worm gear, and the table top makes a precise small-range circular motion under the principle of worm gear and worm drive, thus realizing the function of angular position. The adjustment angle range of the electric angular position table is between ±15°. Preferably, a scale is provided on the table top of the electric angular position table for convenient initial positioning and reading.

[0010] Further, the rotation angle range of the electric rotary table is 360°, and the control repeat positioning accuracy is as low as 4″.

[0011] Further, the stroke of the translation table is 300 mm, and the moving accuracy is 0.25 mm.

[0012] Preferably, connecting plates are provided between the cutting platform and the electric angular position table, between the electric angular position table and the electric rotary table, and between the electric rotary table and the translation table. The connecting plates are made of aluminum and have screw holes of different positions and sizes according to needs to achieve connection.

[0013] The characteristics of the structure of the present utility model mainly lie in: After cutting with this device, there is no need to remove the crystal and the tooling fixture, and the angle can be directly adjusted on the cutting platform; reduce the cutting amount of test wafers, high efficiency, high accuracy, reduce the number of slicing times, reduce material waste, and save costs; reduce handling and reduce the risk of crystal damage.

[0014] The present utility model adopts electric control, and the adjustment accuracy can reach 4″, without errors caused by differences in human operation levels. The crystal orientation accuracy consistency of wafers cut in batches is good. It is measured that the blank of TGG crystal can be accurately positioned within 10′ with just one cut, fully meeting the device processing accuracy requirements and greatly improving the cutting efficiency. Description of the Drawings

[0015] Figure 1 It is a three-dimensional structure schematic diagram of the present utility model.

[0016] Figure 2 is Figure 1 the right-side schematic diagram of

[0017] Figure 3 is Figure 1 the left-side schematic diagram of

[0018] Figure 4 is Figure 1 the front-side schematic diagram of

[0019] Figure 5 It is a scale schematic diagram of the electric angular position table of the present utility model.

[0020] Reference numerals: 1, cutting platform; 2, electric angular position table; 3, electric rotary table; 4, translation table; 5, base; 11, clamping and fixing part. Specific embodiments

[0021] In order to better understand the technical solution of the present utility model, the embodiments of the present utility model will be described in detail below in conjunction with specific embodiments. It should be clear that the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present utility model.

[0022] The terms used in the embodiments of the present utility model are only for the purpose of describing specific embodiments, and are not intended to limit the present utility model. The singular forms of "a", "the" and "said" used in the embodiments of the present utility model and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. The test materials adopted by the present utility model are all ordinary commercially available products and can be purchased in the market.

[0023] Referring to Figures 1 to 4 As shown, the present application discloses a crystal cutting crystal orientation adjusting device, including a cutting platform 1 and a base 5. The cutting platform 1 is used to carry the crystal to be cut. An electric angular position table 2, an electric rotary table 3, and a translation table 4 are provided between the cutting platform 1 and the base 5; the electric rotary table 3 is fixed below the cutting platform 1 and includes a rotating mechanism that can horizontally rotate around the Z axis to drive the cutting platform 1 to rotate; the electric angular position table 2 is placed below the electric rotary table 3 and swings at an angle in the Z-axis direction perpendicular to the cutting platform 1; the translation table 4 is placed on the base 5 and fixedly connected to the electric angular position table 2 for controlling the front-back translation of the cutting platform 1.

[0024] The cutting platform 1 further includes a crystal clamping and fixing portion 11, which includes a semi-circular fixed aluminum ring with adjustable size, a plastic soft pad in the middle, and openings on both sides, and is fixed on the cutting platform 1 with screws.

[0025] The electric angular position table of the structure of the present utility model adopts a high-precision electric angular position table, which is standard-equipped with a stepping motor and a motion controller to achieve automatic high-precision control of the Z-axis angle. More specifically, the electric angular position table 2 includes a stepping motor, a worm gear, a worm, an elastic coupling and a table top. The stepping motor is connected to the worm through an elastic coupling, and the worm is connected to the worm gear. The transmission is synchronous, and the deviation elimination performance is good, preventing deviation during the cutting process. The table top makes a precise small-range circular motion under the principle of worm gear and worm transmission, thus realizing the function of the angular position. Adopting a precisely ground worm gear and worm structure, it can rotate in any forward and reverse directions with extremely small backlash. The adjustment angle range of the electric angular position table 2 is between ±15°, and the adjustment accuracy can reach 4″. Preferably, a scale is provided on the table top of the electric angular position table 2 for convenient initial positioning and reading.

[0026] Furthermore, the electric rotary table 3 is also equipped with a motion controller and a stepping motor, which can achieve a 360-degree rotation angle range, clockwise, counterclockwise, and high-precision rotation. The control repeat positioning accuracy is as low as 4″, and the precise adjustment of the angle on the Y-axis can be realized. Preferably, the electric rotary table 3 is also provided with a peripheral scale circle, and the peripheral scale circle is a laser-scribed scale, and the scale can rotate relative to the table top of the electric rotary table 3 for convenient initial positioning and reading.

[0027] The translation stage 4 is fixed on the base 5. By rotating the handwheel, the ball screw of the translation stage 4 makes a linear motion. At the same time, it has a large load-bearing capacity, realizing the forward and backward movement of the electric rotary table 3, the electric angular position table 2 and the crystal to be cut on the platform. The size control adopts scale positioning. The stroke of the translation stage 4 is 300 mm, and the movement accuracy is 0.25 mm, and crystal blocks of any thickness can be cut.

[0028] In one of the preferred embodiments, the cutting platform 1 includes a crystal clamping and fixing portion 11, which includes a semi-circular fixed aluminum ring with adjustable size, a plastic soft pad in the middle, and openings on both sides, and is fixed on the cutting platform 1 with screws, which can effectively fix crystals of different diameters and is easy to operate.

[0029] In one of the preferred embodiments, connecting plates are provided between the cutting platform 1 and the electric rotary table 3, between the electric angular position table 2 and the electric rotary table 3, and between the electric angular position table 2 and the translation stage 4. The connecting plates are made of aluminum, and screw holes of different positions and sizes are opened according to needs to achieve connection.

[0030] In one of the preferred embodiments, the positions of the electric angular position table 2 and the electric rotary table 3 can be exchanged, that is, the electric angular position table 2 is above the electric rotary table 3 and is connected to the cutting platform 1; the electric rotary table 3 is fixed on the translation stage 4.

[0031] Specific implementation manner: Taking the orientation of a single Φ72*96mm cylindrical TGG crystal embryo as an example, place the crystal embryo on the cutting platform 1, hold it with an aluminum ring, and lock it firmly with screws at an appropriate tightness. Adjust the electric angular position table 2 and the electric rotary table 3 to make the crystal axis of the crystal embryo horizontal and perpendicular to the cutting surface; move the translation table 4 to cut out a crystal thin slice, remove the marked position, use an orientation instrument to measure the angle, and calculate the deviation value from the theoretical angle. Adjust the angles of the electric angular position table 2 and the electric rotary table 3 according to the difference value, move the translation table 4 to cut another crystal thin slice, and measure its orientation angle again to confirm that the orientation is in place. If the crystal orientation accuracy requirements are met, batch cutting can be carried out subsequently. If the crystal orientation accuracy requirements are not met, the electric angular position table 2 and the electric rotary table 3 can be finely adjusted again according to the theoretical angle deviation value, and then slice and confirm again.

[0032] The device of the present utility model improves the efficiency and reduces the risk of crystal damage by eliminating the lower disk of the crystal embryo; at the same time, using a thin slice to replace the crystal embryo test can improve the detection accuracy, reduce the number of slicing times, and improve the efficiency.

[0033] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A crystal cutting crystal orientation adjustment device, comprising a cutting platform and a base, the cutting platform is used to carry the crystal to be cut, and is characterized in that, An electric angular position table, an electric rotary table, and a translation table are provided between the cutting platform and the base. The cutting platform is fixedly connected to the electric rotary table or the electric angular position table below. The electric angular position table swings at an angle in a direction perpendicular to the cutting platform. The electric rotary table includes a rotary mechanism capable of horizontally rotating around the Z-axis, which is connected to the electric angular position table and drives the cutting platform to rotate. The translation table is placed on the base and connected to the electric rotary table or the electric angular position table, and is used to control the forward and backward translation of the cutting platform. The cutting platform includes a crystal clamping and fixing part, which includes a semi-circular fixed aluminum ring with adjustable size, a plastic soft pad in the middle, and openings on both sides, and is fixed on the cutting platform with screws.

2. The crystal cutting crystal orientation adjustment device according to claim 1, wherein The electric angular position table includes a stepping motor, a worm gear, a worm, an elastic coupling, and a table top. The stepping motor is connected to the worm through the elastic coupling, the worm is connected to the worm gear, and the angle adjustment range of the table top is between ±15°, and the adjustment accuracy is at least 4″.

3. The crystal cutting crystal orientation adjustment device according to claim 1, wherein The rotation angle range of the electric rotary table is 360°, and the control repeat positioning accuracy is at least 4″.

4. The crystal cutting crystal orientation adjustment device according to claim 1, characterized in that, The stroke of the translation table is 300 mm, and the moving accuracy is 0.25 mm.

5. The crystal cutting crystal orientation adjustment device according to claim 1, characterized in that Connection plates are provided between the cutting platform and the electric angular position table or the electric rotary table, between the electric angular position table and the electric rotary table, and between the electric rotary table and the translation table. The connection plates are made of aluminum, and screw holes of different positions and sizes are opened as needed to achieve connection.

6. The crystal cutting crystal orientation adjusting device according to claim 2, characterized in that, A scale is provided on the table top of the electric angular position table to facilitate initial positioning and reading.

Images