阅读说明：本技术 一种谐振子激光去重平衡工艺 (Harmonic oscillator laser de-weight balancing process ) 是由 王涛 任佳婧 于 2021-09-10 设计创作，主要内容包括：本发明公开了一种谐振子激光去重平衡工艺,其特征在于：通过激光去重装置谐振子周向上四等分圆周角度的侧壁进行标刻去重,标刻去重过程中对距离偏重部位越近的标刻部位标刻深度越大,越远离偏重部位的标刻深度越小,反复检测谐振子平衡状态,多次进行标刻去重从而使谐振子达到平衡；采用上述技术方案通过激光去重设备通过减重的形式,去除谐振环上多余重量,从而使谐振子达到平衡,相比传统的加重找平衡的方法,由于采用激光去重,能够重复检查精准去重,操作方便,找平效果好。(The invention discloses a harmonic oscillator laser de-weight balancing process, which is characterized by comprising the following steps of: marking and removing the weight of the harmonic oscillator by using a laser weight removing device, wherein the circumferential angle of the harmonic oscillator is divided into four equal parts in the circumferential direction, the marking depth of a marking part which is closer to a heavy part is larger, and the marking depth of the part which is farther from the heavy part is smaller in the marking and removing process, the balance state of the harmonic oscillator is repeatedly detected, and the marking and removing weight are repeatedly carried out, so that the harmonic oscillator is balanced; adopt above-mentioned technical scheme to remove through the laser and reset the form that equipment is through subtracting heavy, get rid of the unnecessary weight on the resonance ring to make the harmonic oscillator reach balance, compare the traditional method of looking for the balance that aggravates, owing to adopt the laser to remove heavy, can the accurate weight that goes of rechecking, convenient operation, it is effectual to make level.)

1. A harmonic oscillator laser de-weight balancing process is characterized in that: the side walls of the harmonic oscillators circumferentially and four times equally divide the circumferential angle through the laser de-weighting device are marked and de-weighted, the marking depth of the marked part which is closer to the unbalanced part is larger in the marking and de-weighting process, the marking depth which is farther from the unbalanced part is smaller, the balance state of the harmonic oscillators is repeatedly detected, and the marking and de-weighting is carried out for multiple times, so that the harmonic oscillators are balanced.

2. The harmonic oscillator laser de-weighting balancing process according to claim 1, characterized in that: the method comprises the steps of (a) connecting a cable and an oscilloscope for detecting the balance of the harmonic oscillator to the tool (2), installing a tool (2) for installing the harmonic oscillator (3), and connecting a laser de-weighting device (4) to the tool (2), wherein a laser de-weighting device light beam is perpendicular to and intersected with the central axis of the rotary table, the rotary table (1) can rotate by 360 degrees and can be positioned every 90 degrees, assembling the harmonic oscillator, installing the harmonic oscillator to the tool (2), installing the tool (2) to the rotary table, keeping the harmonic oscillator coaxial with the rotary table (1), and keeping one of piezoelectric ceramics on the harmonic oscillator aligned with the laser device as a starting point; b. detecting the balance state of the harmonic oscillator, applying voltage to the harmonic oscillator through a cable, detecting the balance state of the harmonic oscillator through an oscilloscope, and detecting the unbalanced part of the harmonic oscillator; c. carrying out laser marking and de-weighting treatment on the resonant ring part on the harmonic oscillator at intervals of 90 degrees in sequence from the starting point through laser de-weighting equipment, wherein the laser marking depth of the de-weighting position close to the position with larger weight is large, and the laser marking depth of the de-weighting position far away from the position with larger weight is small; d. re-detecting the balance state of the harmonic oscillator, electrifying the harmonic oscillator again through the cable, and detecting the balance state of the harmonic oscillator again through the oscilloscope; e. and if the balance requirement is met, finishing the leveling work, and if errors exist, continuing the steps c and d until the balance is achieved.

3. The harmonic oscillator laser de-weighting balancing process according to claim 1, characterized in that: and in the laser marking and de-weighting process, inert gas is adopted for protection, and argon or helium is blown to the laser marking part.

4. The harmonic oscillator laser de-weighting balancing process according to claim 1, characterized in that: the length and width specification of a part marked and removed with weight on the resonant ring by the laser weight removing equipment is 2mm multiplied by 0.5mm, the depth of the part removed with weight is determined according to the size of the removed weight, and the depth of the part removed with weight is determined by adjusting the power of the laser weight removing equipment and the marking times.

Technical Field

The invention relates to the field of structural balance of a vibration gyroscope, in particular to the technical field of laser de-weighting balance of cup-shaped vibration gyroscope harmonic oscillators.

Background

The cup-shaped vibration gyroscope is a gyroscope for detecting angular velocity by using an elastic wave inertia effect, and adopts a working mode of piezoelectric driving and piezoelectric detection. The coriolis acceleration is a basic principle of the cup-shaped vibration gyro for detecting the angular velocity, and the gyro force formed by the coriolis effect is a basic condition for the excitation of the gyro detection mode. When an angular velocity is input, the detection mass unit forms new standing wave vibration along the detection axis direction under the action of the Coriolis force. Ideally, the output signal of the gyroscope is proportional to the input angular velocity, so that the input angular velocity can be obtained through demodulation processing of the output signal, which is the basic principle of cup-shaped fluctuation gyroscope for detecting the angular velocity.

The cup-shaped vibrating gyroscope is made of elastic alloy. The material for manufacturing the gyroscope harmonic oscillator has the following basic properties: the resonator has the advantages of high mechanical quality factor, good isotropy and small temperature coefficient, so that the size, modal characteristics and the like of the resonator are changed as little as possible when the ambient temperature is changed.

Since the harmonic oscillator belongs to a typical thin-wall part, the problem of machining deformation needs to be prevented in the precision machining process. The material non-uniformity and geometric errors of the harmonic oscillator are the most basic forms of defects, and will form specific harmonic oscillator quality parameter defects, eventually leading to zero offset drift.

Vibration mode deviation and frequency cracking generated by manufacturing errors of the gyro harmonic oscillator are main factors influencing the performance of the gyro and must be eliminated or reduced, namely, the dynamic balance of the gyro is realized.

The frequency splitting is eliminated by changing the local mass of the harmonic oscillator, which is usually done by removing material on the harmonic oscillator, to achieve a balance of the harmonic oscillator. The traditional mechanical balance adjusting method of the gyro harmonic oscillator is to adjust the balance of the harmonic oscillator by a method of weighting on a resonance ring, so that the local part of the gyro harmonic oscillator is difficult to remove or adjust.

Disclosure of Invention

In order to solve the defects in the prior art, the invention provides a harmonic oscillator laser de-weighting balancing process which is simple in process, easy to operate and good in effect, and the technical scheme adopted by the invention is as follows:

a harmonic oscillator laser de-weight balancing process is characterized in that: the side walls of the harmonic oscillators circumferentially and four times equally divide the circumferential angle through the laser de-weighting device are marked and de-weighted, the marking depth of the marked part which is closer to the unbalanced part is larger in the marking and de-weighting process, the marking depth which is farther from the unbalanced part is smaller, the balance state of the harmonic oscillators is repeatedly detected, and the marking and de-weighting is carried out for multiple times, so that the harmonic oscillators are balanced.

The method comprises the following steps of a, mounting a harmonic oscillator on a rotary worktable, and further comprising a tool for mounting the harmonic oscillator and a laser resetting device, wherein the tool is connected with a cable and an oscilloscope for detecting the balance of the harmonic oscillator, a laser resetting device light beam is perpendicular to and intersected with the central axis of the rotary worktable, the rotary worktable can rotate 360 degrees and can be positioned every 90 degrees, a, assembling the harmonic oscillator, mounting the harmonic oscillator on the tool, mounting the tool on the rotary worktable, keeping the harmonic oscillator coaxial with the rotary worktable, and keeping one of piezoelectric ceramics on the harmonic oscillator aligned with the laser device as a starting point; b. detecting the balance state of the harmonic oscillator, applying voltage to the harmonic oscillator through a cable, detecting the balance state of the harmonic oscillator through an oscilloscope, and detecting the unbalanced part of the harmonic oscillator; c. carrying out laser marking and de-weighting treatment on the resonant ring part on the harmonic oscillator at intervals of 90 degrees in sequence from the starting point through laser de-weighting equipment, wherein the laser marking depth of the de-weighting position close to the position with larger weight is large, and the laser marking depth of the de-weighting position far away from the position with larger weight is small; d. re-detecting the balance state of the harmonic oscillator, electrifying the harmonic oscillator again through the cable, and detecting the balance state of the harmonic oscillator again through the oscilloscope; e. and if the balance requirement is met, finishing the leveling work, and if errors exist, continuing the steps c and d until the balance is achieved.

Furthermore, inert gas is adopted for protection in the laser marking and de-weighting process, and argon or helium is blown to the laser marking position.

Furthermore, the length and width of the part marked and removed by the laser weight removing device on the resonance ring is 2mm multiplied by 0.5mm, the depth of the part removed with weight is determined according to the size of the removed weight, and the depth of the part removed with weight is determined by adjusting the power of the laser weight removing device and the marking times.

Adopt above-mentioned technical scheme to remove through the laser and reset the form that equipment is through subtracting heavy, get rid of the unnecessary weight on the resonance ring to make the harmonic oscillator reach balance, compare the traditional method of looking for the balance that aggravates, owing to adopt the laser to remove heavy, can the accurate weight that goes of rechecking, convenient operation, it is effectual to make level.

Drawings

FIG. 1 is a schematic structural diagram of a de-weighting apparatus according to the present invention.

Detailed Description

The invention provides a harmonic oscillator balancing process, which particularly comprises the steps of marking and removing the weight of a side wall which is formed by dividing a circumferential angle into four parts in the circumferential direction of a harmonic oscillator through a laser weight removing device, wherein the marking depth of a marking part which is closer to a weight bias part is larger, the marking depth which is farther from the weight bias part is smaller in the marking and removing process, and the harmonic oscillator balancing state is repeatedly detected to mark and remove the weight for multiple times so as to balance the harmonic oscillator. Compared with the traditional weighting process, the surface flatness of the resonator can be ensured, and the operation is convenient. The process is described in further detail below with reference to specific equipment.

The de-weighting device shown in fig. 1 comprises a rotary worktable 1, a tool 2 and a laser de-weighting device 4, wherein the tool 2 is used for installing and fixing a harmonic oscillator 3, the rotary worktable 1 can realize 360-degree rotation and can realize stagnation every 90 degrees from a starting point, a laser beam of the laser de-weighting device 4 is perpendicular to and intersected with a central main shaft of the rotary worktable 1, and the tool 2 can be installed on the rotary worktable. And the harmonic oscillator arranged on the tool 2 is coaxial with the rotary worktable 1 after the tool is arranged on the rotary worktable 1. The device also comprises a test cable and an oscilloscope which are used for detecting the balance state of the harmonic oscillator.

The laser de-weighting balancing process for the harmonic oscillator by adopting the equipment comprises the following steps:

a. assembling the harmonic oscillator, namely installing the harmonic oscillator 3 on a tool 2, installing the tool 2 on a rotary worktable 1, keeping the harmonic oscillator coaxial with the rotary worktable 1, and keeping one of the piezoelectric ceramics on the harmonic oscillator aligned with the laser equipment as a starting point; and connecting a cable and an oscilloscope with the harmonic oscillator when the harmonic oscillator is installed on the tool.

b. Detecting the balance state of the harmonic oscillator, wherein 8 pieces of piezoelectric ceramics are arranged on the bottom surface of the harmonic oscillator, the piezoelectric ceramics can convert mechanical energy and electric energy mutually, 10V voltage is applied to 2 pieces of piezoelectric ceramics in the harmonic oscillator through a cable, the voltage output of the rest 6 pieces of piezoelectric ceramics of the harmonic oscillator is detected through an oscilloscope, the current balance state of the harmonic oscillator can be judged according to the voltage amplitude and the resonance frequency output of the 6 pieces of piezoelectric ceramics, and the overweight part of the harmonic oscillator is detected;

c. sequentially carrying out laser marking and de-weighting treatment on the resonant ring positions on the harmonic oscillator at intervals of 90 degrees from the starting point through laser de-weighting equipment, wherein the laser marking depth of the de-weighting position close to the position with larger weight is large, and the laser marking depth of the de-weighting position far away from the position with larger weight is small; in the laser marking and de-weighting process, inert gas is adopted for protection, argon or helium is blown to a laser marking position (as shown in figure 1, air is blown to the surface of a workpiece through an air blowing pipe 5), so that harmonic oscillator oxidation can be prevented, excess can be blown away in time, the surface of a harmonic oscillator is ensured to be smooth, the length and width of the marked and de-weighted position on a resonance ring of the laser de-weighting equipment is 2mm multiplied by 0.5mm, the depth of the de-weighted position is determined according to the size of the de-weighted position, and the depth of the de-weighted position is determined by adjusting the power of the laser de-weighting equipment and the marking times. Because the four quadrant points which are distributed at 90 degrees are subjected to de-duplication treatment by laser marking de-duplication, the de-duplication is conveniently and accurately controlled.

d. Re-detecting the equilibrium state of the harmonic oscillator, electrifying the harmonic oscillator again through the cable, and detecting the electrode output amplitude and the resonance frequency of the harmonic oscillator through the oscilloscope to judge the equilibrium state of the harmonic oscillator;

e. and if the balance requirement is met, completing the balance work, and if the unbalance amount exists, continuing to perform the steps c and d until the balance is achieved.