Adjustable upper electrode mechanism for measuring frequency of quartz crystal

Abstract

The utility model relates to an adjustable upper electrode mechanism for measuring the frequency of a quartz crystal, which comprises an upper electrode, an upper bracket and a lower bracket, the upper bracket and the lower bracket are connected up and down, a slide block capable of sliding up and down is mounted on one side of the upper bracket, an upper electrode seat is mounted outside the slide block, and the upper electrode is arranged at the bottom of the upper electrode seat. A micrometer is vertically installed at the top of the upper support and located above the sliding block, a testing part at the lower end of the micrometer makes contact with the sliding block, a cam and a motor driving the cam to rotate are installed on the other side of the upper support, a lever is rotatably installed in the middle of the lower support, and a lever front pulley and a lever rear pulley are installed at the two ends of the lever respectively. The lever front pulley abuts against the lower end of the upper electrode base, and the lever rear pulley makes contact with the lower portion of the cam. According to the utility model, the position of the conventional upper electrode during measurement is improved, so that the upper electrode has high-precision adjustability, thereby ensuring that the upper electrode can accurately measure the dead center of a measured object during frequency measurement.

Description

Technical Field

[0001] This utility model relates to the field of quartz crystal frequency measurement technology, and in particular to an adjustable upper electrode mechanism for quartz crystal frequency measurement. Background Technology

[0002] During the frequency measurement and sorting process of quartz crystals, all quartz crystals need to be frequency measured and classified. The quartz crystal is rotated to the position directly below the upper electrode by rotating the dial. Then the upper electrode is lowered to measure the frequency of the quartz crystal. The measurement signal is transmitted to the measurement board through the test line of the upper electrode for frequency reading and analysis.

[0003] However, when the quartz crystal is rotated to be directly below the upper electrode via the dial, the state it appears in is not unique. Furthermore, the fixture supporting the quartz crystal has errors, causing the upper electrode to not fall accurately at the center of the quartz crystal, resulting in errors in the measurement frequency. Moreover, most existing mechanisms directly control the up and down movement of the upper electrode with cylinders, which has low control precision and cannot guarantee measurement quality. Therefore, it is necessary to design an adjustable upper electrode mechanism with higher control precision. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide an adjustable upper electrode mechanism for frequency measurement of quartz crystals, which improves the position of the existing upper electrode during measurement and makes it more adjustable with higher accuracy, thereby ensuring that the upper electrode can accurately measure the center of the object being measured during frequency measurement.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: An adjustable upper electrode mechanism for measuring the frequency of quartz crystals is provided, including an upper electrode and an upper support and a lower support connected vertically. A slider that slides vertically is installed on one side of the upper support, and an upper electrode seat is installed on the outside of the slider. The upper electrode is located at the bottom of the upper electrode seat. One end of the upper electrode is connected to the frequency measurement board of the machine tool, and the other end of the upper electrode is responsible for contacting the object being measured and transmitting the frequency. A micrometer is vertically installed on the top of the upper support above the slider, and the testing part at the lower end of the micrometer contacts the slider. A cam and a motor that drives the cam to rotate are installed on the other side of the upper support. A lever is rotatably installed in the middle of the lower support, and a front pulley and a rear pulley are respectively installed at both ends of the lever. The front pulley abuts against the lower end of the upper electrode seat, and the rear pulley contacts the lower part of the cam. An XY manual slide is installed at the lower end of the lower support. By calibrating the position of the XY manual slide, the X / Y position of the upper electrode can be precisely adjusted, so that the upper electrode can fall on the exact center of the object being measured.

[0006] As a supplement to the technical solution described in this utility model, the lower support has a groove in the middle to form a through hole for the lever to move, and the inner wall of the through hole is rotatably connected to the middle of the lever through a rotating shaft.

[0007] As a supplement to the technical solution described in this utility model, a horizontal outer edge is provided on the lower outer side of the upper electrode holder, and the upper electrode is fixed on the outer edge. The upper electrode is made of copper, which has good electrical conductivity and low cost. The upper electrode is fixed to the aluminum upper electrode holder by an internal hexagonal screw.

[0008] As a supplement to the technical solution described in this utility model, the upper end of the upper bracket is fixed with a micrometer by a fixing block, and an LED light is installed on the side of the fixing block above the upper electrode seat.

[0009] As a supplement to the technical solution described in this utility model, the fixing block, the upper bracket and the lower bracket are all made of stainless steel, the center of the entire bracket is on the same vertical line and is fixed with hexagonal screws.

[0010] As a supplement to the technical solution described in this utility model, a guide rail for the slider to slide up and down is installed on one side of the upper bracket, and a fixed handle is screwed to the side of the slider. The threaded post at one end of the fixed handle passes through the slider and presses against the guide rail.

[0011] As a supplement to the technical solution described in this utility model, a positioning plate is also installed on the motor output shaft. The positioning plate is located outside the cam and has a circular plate structure. The center of the positioning plate is connected to the motor output shaft. Two detection positions are provided on the positioning plate. The detection positions are through holes that penetrate the positioning plate. The two detection positions correspond to the position where the positioning plate is rotated 180° and the initial position of 0°, respectively. The motor is fixed on the upper bracket by a motor mount. A photoelectric switch mount is installed on the upper end of the motor mount. A photoelectric switch that cooperates with the positioning plate is installed on one end of the photoelectric switch mount. The photoelectric switch is used to sense and detect the position.

[0012] Beneficial effects: This utility model relates to an adjustable upper electrode mechanism for quartz crystal frequency measurement. A motor drives a cam to rotate, which in turn moves a lever up and down. When the cam presses down on the pulley behind the lever, the pulley in front of the lever lifts the slider, causing the upper electrode to rise. Subsequent cam lifts follow the same principle, causing the upper electrode to descend, thus achieving the reciprocating motion of the upper electrode. The control precision of the upper electrode's up-and-down movement is high, ensuring good measurement quality. The up-and-down movement position is determined by the cooperation of a positioning plate and a photoelectric switch, allowing the cam to rotate 180° as one movement. The XY manual slide mainly adjusts the X / Y position of the upper electrode, thus affecting the landing point of the upper electrode. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 These are structural schematic diagrams of this utility model from different angles.

[0015] Diagram: 1. Micrometer, 2. Fixing block, 3. LED light, 4. Slider, 5. Upper electrode holder, 6. Fixing handle, 7. Upper electrode, 8. XY manual slide, 9. Photoelectric switch, 10. Photoelectric switch holder, 11. Motor, 12. Cam, 13. Lever rear pulley, 14. Lever, 15. Lever front pulley, 16. Upper bracket, 17. Lower bracket, 18. Motor holder, 19. Positioning plate, 20. Perforation, 21. Outer edge. Detailed Implementation

[0016] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0017] The embodiments of this utility model relate to an adjustable upper electrode mechanism for frequency measurement of quartz crystals, such as... Figure 1-2 As shown, the system includes an upper electrode 7 and an upper support 16 and a lower support 17 connected vertically. A sliding block 4 is mounted on one side of the upper support 16, and an upper electrode seat 5 is mounted on the outside of the slider 4. The upper electrode 7 is located at the bottom of the upper electrode seat 5. One end of the upper electrode 7 is connected to the frequency measurement board of the machine, and the other end of the upper electrode 7 is responsible for contact with the object being measured and for frequency transmission. A micrometer 1 is vertically mounted on the top of the upper support 16 above the slider 4, and the lower testing section of the micrometer 1 contacts the slider 4. A cam 12 and a drive cam 12 are mounted on the other side of the upper support 16. The motor 11 is driven. A lever 14 is rotatably mounted in the middle of the lower bracket 17. A front pulley 15 and a rear pulley 13 are respectively mounted on both ends of the lever 14. The front pulley 15 abuts against the lower end of the upper electrode seat 5, and the rear pulley 13 contacts the lower part of the cam 12. An XY manual slide 8 is mounted on the lower end of the lower bracket 17. The X / Y position of the upper electrode 7 can be precisely adjusted by calibrating the position of the XY manual slide 8, so that the upper electrode 7 can fall on the exact center of the object being measured. The XY manual slide 8 is an existing component that can be purchased directly from the market, so its structure will not be described in detail.

[0018] The micrometer 1 is a digital micrometer that clearly displays the height of the upper electrode 7.

[0019] The lower support 17 has a slot in the middle to form a through hole 20 for the lever 14 to move. The inner wall of the through hole 20 is rotatably connected to the middle of the lever 14 via a rotating shaft.

[0020] The upper electrode base 5 has a horizontal outer edge 21 at its lower outer side, and the upper electrode 7 is fixed on the outer edge 21. The upper electrode 7 is made of copper, which has good conductivity and low cost. The upper electrode 7 is fixed to the aluminum upper electrode base 5 by internal hexagon screws.

[0021] The micrometer 1 is fixed to the upper end of the upper bracket 16 by the fixing block 2. An LED light 3 is installed on the side of the fixing block 2 above the upper electrode base 5. The LED light 3 is used to provide light to the upper electrode 7 and the upper electrode base 5.

[0022] The fixing block 2, the upper bracket 16 and the lower bracket 17 are all made of stainless steel. The center of the entire bracket is on the same vertical line and is fixed with hexagonal screws.

[0023] The upper bracket 16 is equipped with a guide rail for the slider 4 to slide up and down. The slider 4 has a threaded hole on its side. The threaded post at one end of the fixed handle 6 is screwed into the threaded hole and passes through the threaded hole to press against the guide rail. When adjusting the upper electrode 7, the fixed handle 6 needs to be loosened so that the threaded post is separated from the guide rail, so that the slider 4 can slide up and down along the guide rail. When the upper electrode 7 does not need to be adjusted, the fixed handle 6 needs to be tightened so that the threaded post presses against the guide rail, so that the slider 4 is fixed and cannot slide up and down along the guide rail.

[0024] A positioning plate 19 is also installed on the output shaft of the motor 11. The positioning plate 19 is located outside the cam 12. The positioning plate 19 is a circular plate structure. The middle part of the positioning plate 19 is connected to the output shaft of the motor 11. The positioning plate 19 has two detection positions, which are through holes penetrating the positioning plate 19. The two detection positions correspond to the position of the positioning plate 19 after rotating 180° and the initial position of 0°, respectively. The motor 11 is fixed on the upper bracket 16 by the motor base 18. A photoelectric switch base 10 is installed on the upper end of the motor base 18. A photoelectric switch 9 that cooperates with the positioning plate 19 is installed on one end of the photoelectric switch base 10. The photoelectric switch 9 is used to sense and detect the position. The motor 11 drives the cam 12 and the positioning plate 19 to rotate. The positioning plate 19 has two detection positions, which correspond to the position of the positioning plate 19 after rotating 180° and the initial position of 0°, respectively. At first, the photoelectric switch 9 senses the initial position of 0°. After the positioning plate 19 rotates 180° and senses the position of 180°, it stops rotating. Using photoelectric switches for sensing is a common technique and is widely used in the field of automation.

[0025] This invention uses a motor 11 to drive a cam 12 to rotate. The rotation of the cam 12 causes the lever 14 to move up and down. When the cam 12 presses down on the pulley 13 behind the lever, the pulley 15 in front of the lever lifts up the slider 4, causing the upper electrode 7 to rise. When the cam 12 rises again, the same principle applies, causing the upper electrode 7 to fall, thus realizing the up-and-down reciprocating motion of the upper electrode 7. The control precision of the up-and-down motion of the upper electrode 7 is high, which can better ensure the measurement quality. The up-and-down position is determined by the cooperation of the positioning plate 19 and the photoelectric switch 9, so that the cam 12 rotates 180° as one action. The XY manual slide table 8 mainly adjusts the X / Y position of the upper electrode 7, thereby affecting the landing position of the upper electrode 7.

[0026] In a specific example, the upper electrode measuring mechanism is assembled onto the XY manual slide 8. Before operation, the upper electrode 7 is positioned at the exact center of the quartz crystal by fine-tuning the XY manual slide 8. Then, the XY manual slide 8 is started, and the upper electrode 7 can accurately position itself at the exact center of each quartz crystal being measured when it moves up and down.

[0027] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0028] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0029] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0030] The above provides a detailed description of an adjustable upper electrode mechanism for quartz crystal frequency measurement provided in this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. An adjustable upper electrode mechanism for measuring the frequency of a quartz crystal, comprising an upper electrode (7) and an upper support (16) and a lower support (17) connected vertically, characterized in that: A sliding block (4) is mounted on one side of the upper support (16). An upper electrode holder (5) is mounted on the outside of the sliding block (4). An upper electrode (7) is provided at the bottom of the upper electrode holder (5). One end of the upper electrode (7) is connected to the frequency measurement board of the machine tool, and the other end of the upper electrode (7) is responsible for contact with the object being measured and frequency transmission. A micrometer (1) is vertically mounted on the top of the upper support (16) above the sliding block (4). The testing part at the lower end of the micrometer (1) contacts the sliding block (4). On the other side of the upper bracket (16), a cam (12) and a motor (11) for driving the cam (12) to rotate are installed. A lever (14) is rotatably installed in the middle of the lower bracket (17). A front pulley (15) and a rear pulley (13) are respectively installed at the two ends of the lever (14). The front pulley (15) abuts against the lower end of the upper electrode seat (5). The rear pulley (13) contacts the lower part of the cam (12). An XY manual slide (8) is installed at the lower end of the lower bracket (17).

2. The adjustable upper electrode mechanism for quartz crystal frequency measurement according to claim 1, characterized in that: The lower support (17) has a slot in the middle to form a through hole (20) for the lever (14) to move. The inner wall of the through hole (20) is rotatably connected to the middle of the lever (14) by a rotating shaft.

3. The adjustable upper electrode mechanism for quartz crystal frequency measurement according to claim 1, characterized in that: The upper electrode holder (5) has a horizontal outer edge (21) on its lower outer side, and the upper electrode (7) is fixed on the outer edge (21).

4. The adjustable upper electrode mechanism for quartz crystal frequency measurement according to claim 1, characterized in that: The micrometer (1) is fixed at the upper end of the upper bracket (16) by a fixing block (2), and an LED light (3) is installed on the side of the fixing block (2) above the upper electrode seat (5).

5. The adjustable upper electrode mechanism for quartz crystal frequency measurement according to claim 1, characterized in that: The upper bracket (16) is equipped with a guide rail for the slider (4) to slide up and down. A fixed handle (6) is screwed to the side of the slider (4). The threaded post at one end of the fixed handle (6) passes through the slider (4) and presses against the guide rail.

6. The adjustable upper electrode mechanism for quartz crystal frequency measurement according to claim 1, characterized in that: A positioning plate (19) is also installed on the output shaft of the motor (11). The positioning plate (19) is located outside the cam (12). The positioning plate (19) is a circular plate structure. The middle part of the positioning plate (19) is connected to the output shaft of the motor (11). The positioning plate (19) is provided with two detection positions. The detection positions are through holes that pass through the positioning plate (19). The two detection positions correspond to the position of the positioning plate (19) after rotating 180° and the initial position of 0°, respectively. The motor (11) is fixed on the upper bracket (16) by the motor seat (18). A photoelectric switch seat (10) is installed on the upper end of the motor seat (18). A photoelectric switch (9) that cooperates with the positioning plate (19) is installed on one end of the photoelectric switch seat (10). The photoelectric switch (9) is used to sense and detect the position.

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