Piezoelectric crystal machining orientation clamp

Abstract

The utility model aims to provide a piezoelectric crystal processing orientation clamp, which is used for orienting the end face of a crystal and is characterized by comprising an orientation base, a clamp, an adjusting bolt, a bolt sleeve and a nylon sheet. The adjusting bolt is installed on the clamp through a screw hole, the bolt sleeve is installed on the front end face of the adjusting bolt, the nylon piece wraps the crystal and is placed in the clamp, the crystal is clamped and fixed through the adjusting bolt, and the crystal is flatly placed on an X-ray orientation device with an orientation base. The angle of an X-ray transmitting tube and the angle of an X-ray receiving tube are adjusted according to the diffraction theta angle value of the end face of the crystal needing to be orientated, the deflection angle of the end face of the crystal can be adjusted by rotating the adjusting bolt according to the diffraction theta angle value of the end face of the crystal tested by the X-ray, and the crystal end face orientation can be completed on the clamp by utilizing the clamp. And secondary orientation and gluing operation can be omitted, the processing efficiency is improved, and the operation difficulty is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to piezoelectric crystal processing technical field, more particularly to a kind of piezoelectric crystal processing directional fixture. BACKGROUND

[0002] Piezoelectric crystal is a kind of crystal material with special performance, can be used to manufacture filter, resonator, Q switch, pyroelectric detector and other products, is widely applied in communication, electronics, laser and other industries.Piezoelectric crystal is important raw material for manufacturing filter, under the action of electrical signal, piezoelectric crystal will be deformed to produce sound wave, and electrical signal is converted into acoustic signal.In recent years, the demand for piezoelectric crystal material in market increases greatly, and product delivery cycle shortens.

[0003] For piezoelectric crystal processing, crystal orientation is the key step in piezoelectric crystal processing process, currently crystal orientation needs to be vertically fixed on auxiliary fixture, placed on orientation instrument to complete the orientation of crystal end face Y axis, make horizontal mark line on crystal X axis (main reference surface), after taking down crystal, place crystal X axis (main reference) upward on the fixture with resin strip, place on orientation instrument, adjust crystal deflection angle, complete the orientation of crystal X axis (main reference surface), at this time, crystal X axis is perpendicular to fixture, use glue to fix crystal on fixture, wait for glue to solidify to complete orientation step.This processing mode needs secondary orientation and glue processing, process is complicated, time-consuming is longer, and processing efficiency is low. SUMMARY

[0004] The utility model aims at providing a kind of piezoelectric crystal processing directional fixture, solve the problem that current crystal processing orientation step is complicated and time-consuming, and processing efficiency is low.

[0005] To achieve the above object, the technical scheme provided by the utility model is as follows: a kind of piezoelectric crystal processing directional fixture is used for the orientation of the end face of the crystal, characterized by: including orientation base, fixture, adjusting bolt, bolt sleeve, nylon sheet.Adjusting bolt is installed on the upper of fixture by wire hole, bolt sleeve is installed on the front end surface of adjusting bolt, and nylon sheet is wrapped around crystal and placed in fixture, and adjusting bolt is used to clamp and fix crystal, and it is placed horizontally on X-ray orientation instrument provided with orientation base, the angle of X-ray emitting tube and receiving tube is adjusted according to the required orientation crystal end face diffraction θ angle value, the crystal incidence angle is adjusted for orientation according to the X-ray test crystal end face diffraction θ angle value, and the crystal is clamped and fixed by locking.

[0006] As the utility model is preferred, the center of the clamp is provided with a through hole, and the diameter of the through hole is greater than the diameter of the crystal, eight faces are arranged on the outer side of the clamp, the same number of adjusting bolts are arranged on four non-adjacent faces, and the adjusting bolts are used for adjusting the deflection angle of the crystal and fixing the crystal, the number of adjusting bolts on each face is 1-6, the clamp is processed into a square, the center of the clamp is provided with a through hole which is greater than the diameter of the crystal, the four corners of the clamp are processed into planes, two through holes are arranged on the center of the upper and lower planes and are screwed, and the two through holes are used for mounting the adjusting bolts and adjusting the deflection angle of the crystal and fixing the crystal.

[0007] As the utility model is preferred, the front end of the adjusting bolt is provided with a universal adjusting groove, the universal adjusting groove is used for mounting a bolt sleeve to realize universal adjustment of the bolt sleeve, and the deflection angle of the crystal is adjusted by the adjusting bolt, so that the direction of force is changed.

[0008] As the utility model is preferred, the bolt sleeve is composed of a locking sleeve bolt sleeve and a bolt cover, the inside of the bolt sleeve is provided with a universal adjusting space, the center of the front surface of the locking sleeve bolt sleeve is provided with a hole which is the same in size as the adjusting bolt and is screwed, the center of the back surface of the locking sleeve bolt sleeve is provided with a hole which is the same in size as the bolt cover and is screwed, and the outer circle of the bolt cover is processed into a thread and is mounted on the back surface of the bolt sleeve.

[0009] As the utility model is preferred, the height of the nylon sheet is the same as the height of the clamp, the nylon sheet is used for wrapping the crystal to increase friction and protect the crystal from being damaged when the deflection angle of the crystal is adjusted by the adjusting bolt and the crystal is fixed.

[0010] The utility model discloses a piezoelectric crystal processing directional clamp, after using the clamp to clamp the crystal, the deflection angle of the crystal end face can be adjusted by rotating the adjusting bolt, the directional clamp is used for completing the directional work of the crystal end face, the secondary orientation and the glue sticking operation can be omitted, the processing efficiency is improved, and the operation difficulty is reduced. ACCURACY OF DRAWINGS

[0011] Figure 1 It is the utility model structure diagram.

[0012] Figure 2 It is the utility model structure section view.

[0013] Figure 3 It is the utility model directional implementation diagram.

[0014] In the drawing: 1 is a clamp, 2 is a crystal, 3 is an adjusting bolt, 4 is a bolt sleeve, 5 is a nylon sheet, 6 is an X-ray emitting tube, 7 is an X-ray receiving tube, 8 is a reference surface, 9 is a rotating platform, 10 is a directional base, and 11 is an end face. DETAILED DESCRIPTION

[0015] The technical solutions in the preferred embodiments of the present application will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present application.

[0016] In the description of the present application, it should be noted that the directions or position relationships indicated by the terms "push forward", "retreat backward", "vertical", "horizontal", "upper left", "lower left", "upper right" and "lower right" are the directions or position relationships shown in the drawings, which are only for the convenience of describing the present application and simplifying the description.

[0017] As shown in Figure 1 and Figure 2 , a piezoelectric crystal processing directional clamp comprises a clamp 1, an adjusting bolt 3, a bolt sleeve 11 and a nylon sheet 5, the clamp 1 is used for fixing a crystal 2, the adjusting bolt 3 is fixedly installed on the clamp 1, the bolt sleeve 4 is assembled at the front end of the adjusting bolt 3, and an angle adjusting mechanism is formed to adjust the angle of the crystal 2, the nylon sheet 5 wraps the crystal 2, and the crystal 2 is horizontally laid in the clamp 1 and rotated to push forward the adjusting bolt 3 to clamp the crystal 2.

[0018] As shown in Figure 3 , the crystal 2 needing to be oriented on an end face 11 is fixed by the clamp 1, the clamp 1 is horizontally placed on a rotating platform 9 of an X-ray orientation instrument provided with an orientation base 10, and the rotating platform 9 realizes rotation of the directional clamp around the vertical direction of the rotating platform. The clamp 1 is perpendicular to the plane where the orientation base 10 and the rotating platform 9 are located. The X-axis of the crystal 2 is perpendicular to a reference surface 8, the Y-axis is perpendicular to the end face 11, and the Z-axis is perpendicular to the X-axis and the Y-axis.

[0019] As shown in Figure 3 , the clamp 1 is horizontally rotated (45°) and placed on the rotating platform 9 of the X-ray orientation instrument. When the end face 11 of the crystal 2 is oriented, according to the X-ray test angle value of the end face diffraction of the crystal, the incident angle of the crystal is adjusted by rotating the adjusting bolt 3 on the clamp 1. For example, if the angle needs to be left-biased, the (upper left) adjusting bolt 3 needs to be rotated backward, the (lower left) adjusting bolt 3 needs to be pushed forward, the (upper right) adjusting bolt 3 needs to be pushed forward, and the (lower right) adjusting bolt 3 needs to be rotated backward. If the angle needs to be right-biased, the adjusting bolt 3 is rotated in the opposite direction according to the above steps.

[0020] In combination with Figure 3 , the method and principle for orienting the Y42° lithium tantalate crystal by using the directional clamp of the present application are specifically described.

[0021] 1. The orientation base 10 is placed on the rotating platform 9 of the X-ray orientation instrument. 2. The clamp 1 with the crystal 2 is horizontally rotated (45°) and placed on the orientation base 10, and the reference surface main reference 8 is oriented towards the front direction of the crystal end surface 11 (+Z) direction. 3. The X-ray orientation instrument is started, and the X-ray emitting tube 6 angle (15°13') and the receiving tube 7 angle (15°13') are adjusted according to the required orientation of the crystal 1 end surface 11 diffraction angle value, and the crystal incident angle is adjusted according to the X-ray test crystal end surface 11 diffraction angle value, and the crystal is oriented and locked by rotating the adjusting screw 3 on the clamp 1. 4. The rotating platform 9 is adjusted to rotate 90° to orient the crystal end surface 11 (+X) direction, and the X-ray emitting tube 6 angle (24°17') and the X-ray receiving tube 7 angle (24°17') are adjusted, and the crystal incident angle is adjusted according to the X-ray test crystal end surface 11 diffraction angle value, and the crystal is oriented and locked by rotating the adjusting screw 3 on the clamp 1.

[0022] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application. Any equivalent or simple changes made according to the structure, features and principles of the present application are included in the protection scope of the present application. The skilled in the art can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, as long as they do not deviate from the structure of the present application or exceed the range defined by the present application, and they should belong to the protection scope of the present application.

Claims

1. A piezoelectric crystal machining orientation fixture for orienting an end face of the crystal, characterized by: The device comprises a directional base, a clamp, an adjusting bolt, a bolt sleeve and a nylon sheet. The adjusting bolt is installed on the clamp through a wire hole. The bolt sleeve is installed on the front end face of the adjusting bolt. The nylon sheet is wrapped around the crystal and put into the clamp. The crystal is clamped by the adjusting bolt and placed on the X-ray orientation instrument with the directional base. The X-ray tube angle and the receiving tube angle are adjusted according to the required diffraction angle value of the crystal end face. The crystal is oriented by adjusting the incident angle of the crystal through the adjusting bolt on the four corners of the clamp and locked.

2. A piezoelectric crystal machining orientation fixture as defined in claim 1, wherein: The clamp is processed into a square with a through hole in the center and the diameter of the through hole is larger than the diameter of the crystal. The four corners of the clamp are processed into a plane with two through holes in the center and are tapped for installing the adjusting bolt. The adjusting bolt is used for adjusting the deflection angle of the crystal and fixing the crystal. After the orientation of the crystal end face is completed, the Z axis, the X axis and the Y axis of the crystal are perpendicular to each other and perpendicular to the clamp. There are eight faces on the outside of the clamp. The same number of adjusting bolts are arranged on four non-adjacent faces. The number of adjusting bolts on each face is 1-6.

3. A piezoelectric crystal machining orientation fixture as defined in claim 1, wherein: The front end of the adjusting bolt is processed with a universal adjusting groove for installing the bolt sleeve to realize the universal adjustment of the bolt sleeve. When the adjusting bolt pushes the deflection angle of the crystal, the direction of the force is changed.

4. A piezoelectric crystal machining orientation fixture as defined in claim 1, wherein: The bolt sleeve is composed of a locking sleeve bolt sleeve and a bolt cover. The inside has a universal adjusting space. The front center hole of the locking sleeve bolt sleeve is the same size as the adjusting bolt and is tapped. The back center hole is the same size as the bolt cover and is tapped. The outer circle of the bolt cover is processed with threads and installed on the back of the bolt sleeve.

5. A piezoelectric crystal machining orientation fixture as defined in claim 1 wherein: The nylon sheet is placed between the crystal and the adjusting bolt. The size of the nylon sheet is smaller than the height of the clamp. The nylon sheet increases the friction force by wrapping the crystal and protects the crystal from being damaged when the adjusting bolt pushes the deflection angle of the crystal and fixes the crystal.

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