CN106841678A - Accelerometer watch core stabilization treatment method - Google Patents
Accelerometer watch core stabilization treatment method Download PDFInfo
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- CN106841678A CN106841678A CN201510883638.9A CN201510883638A CN106841678A CN 106841678 A CN106841678 A CN 106841678A CN 201510883638 A CN201510883638 A CN 201510883638A CN 106841678 A CN106841678 A CN 106841678A
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- Prior art keywords
- watch core
- accelerometer
- accelerometer watch
- treatment method
- stabilization
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
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Abstract
The present invention provides a kind of accelerometer watch core stabilization treatment method, including：Accelerometer watch core is attached in stabilization processes device；Accelerometer watch core is carried out into temperature cycles treatment with default heating rate in preset temperature range；Accelerometer watch core is incubated the first preset duration under preset temperature, detects whether accelerometer watch core is normal after the completion of temperature stabilization treatment；If it is, carrying out random vibration to stabilization processes device with predeterminated frequency, default vibration level and the second preset duration；The method can effectively improve the stability of accelerometer watch core structure, reduce influence of the environmental load to accelerometer bias.
Description
Technical field
The present invention relates to accelerometer production technical field, more particularly to a kind of accelerometer watch core stabilization
Change processing method.
Background technology
Watch core as accelerometer important component, the stability of its structure is influence accelerometer
The key factor of bias stability.Accelerometer watch core by pendulum component, upper torquer, lower torquer and
The part of preload ring four constitutes, and three components are linked together by applying certain preload,
Ask pendulum component, upper and lower torquer coaxial, experience various manufacturing processes, dynamic environmental test, temperature
Preload keeps reliable, stabilization, the mode frequently with welding to be attached after experiment, due to welding temperature
Degree is high, gradient is big, and weldment is heated uneven, will necessarily produce welding deformation and residual stress, welds
Stress can discharge with the time so that axial pre tightening force changes, by the direct shadow of pendulum outer shroud
Ring flexibility level bridge stability so that bias long-time stability change.
In the prior art, watch core stabilization processes are usual after the completion of accelerometer assembling, with acceleration
Degree meter carries out stabilization processes, because accelerometer further relates to various composition portions such as servo circuit, housing
Point, its stabilization treatment method is not appropriate for watch core, is badly in need of the stabilization treatment method of watch core to carry
High acceleration meter bias performance.
The content of the invention
Be given below on brief overview of the invention, so as to provide on it is of the invention some
The basic comprehension of aspect.It should be appreciated that this general introduction is not general on exhaustive of the invention
State.It is not intended to determine crucial or pith of the invention, nor intended limitation this hair
Bright scope.Its purpose only provides some concepts in simplified form, in this, as discussing after a while
The preamble in greater detail stated.
To solve the above problems, the present invention proposes a kind of accelerometer watch core stabilization treatment method,
Including：
Accelerometer watch core is attached in stabilization processes device；
Accelerometer watch core is carried out at temperature cycles with default heating rate in preset temperature range
Reason；
Accelerometer watch core is incubated the first preset duration under preset temperature；
Detect whether accelerometer watch core is normal after the completion of vibration；
If it is, with predeterminated frequency, default vibration level and the second preset duration to stabilisation at
Reason device carries out random vibration.
The accelerometer watch core stabilization treatment method that the present invention is provided, can effectively improve acceleration
The stability of watch core structure is counted, influence of the environmental load to accelerometer bias stability is reduced.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be right
The accompanying drawing to be used needed for embodiment or description of the prior art is briefly described, it should be apparent that,
Drawings in the following description are only some embodiments of the present invention, for those of ordinary skill in the art
For, on the premise of not paying creative work, can also obtain other attached according to these accompanying drawings
Figure.
A kind of stream of embodiment of accelerometer watch core stabilization treatment method that Fig. 1 is provided for the present invention
Cheng Tu.
Stabilization processes dress in the accelerometer watch core stabilization treatment method that Fig. 2 is provided for the present invention
The side cutaway view put.
Stabilization processes dress in the accelerometer watch core stabilization treatment method that Fig. 3 is provided for the present invention
The top view put.
Specific embodiment
Illustrate embodiments of the invention with reference to the accompanying drawings.In an accompanying drawing of the invention or a kind of real
The element and feature applied described in mode can be with one or more other accompanying drawings or implementation methods
In the element that shows and feature be combined.It should be noted that in order to understand purpose, being saved in accompanying drawing and explanation
The expression of part unrelated to the invention, known to persons of ordinary skill in the art and treatment is omited and has retouched
State.
With reference to Fig. 1, the present embodiment provides a kind of accelerometer watch core stabilization treatment method, bag
Include：
Step S101, accelerometer watch core is attached in stabilization processes device；
Step S102, accelerometer watch core is carried out with default heating rate in preset temperature range
Temperature cycles treatment；
Step S103, the first preset duration is incubated by accelerometer watch core under preset temperature.
Step S104, detects whether accelerometer watch core is normal after the completion of temperature stabilization treatment；
Step S105, if it is, with predeterminated frequency, default vibration level and the second preset duration
Random vibration is carried out to stabilization processes device.
Specifically, accelerometer excitation ring is processed using low-expansion alloy, and pendulum is using quartz
Material is processed, it is desirable to which upper torquer, lower torquer and pendulum component are coaxial, certain pre- by applying
Load links together three, and the mode frequently with welding is attached, due to welding after welding
Temperature is high, gradient is big, and weldment is heated uneven, will necessarily produce welding stress and erection stress,
Above-mentioned stress is influenceed to discharge by environmental load, causes preload annular strain so that axially
Pretightning force stability changes, therefore, fast welding stress and erection stress are to cause watch core stabilization
The key factor of property.
Further, with reference to Fig. 2, stabilization processes device includes base 1 and upper lid 2, base 1
At least one mounting groove 7 is set and upper lid 2 between, in the present embodiment, in base 1 and upper lid 2
Both sides are respectively provided with 6 mounting grooves 7, the aperture of mounting groove 7 and the external diameter phase of accelerometer watch core 6
Adaptation, and the inner surface of mounting groove 7 and accelerometer watch core 6 are ensured by the adjustment gap 4 reserved
Cylindrical to be brought into close contact, the installation for realizing accelerometer watch core is fixed, and base 1 and upper lid 2 pass through
Screw 3 is fixed, and realizes the reliable grip of accelerometer watch core.
6 accelerometer watch cores 6 are attached in mounting groove 7 so that accelerometer watch core 6 it is quick
Sense axle is parallel with level reference with the plane that output shaft is constituted, and balance staff is vertical with level reference,
By upper lid 2 and base 1, alignment forms complete mounting groove face-to-face, it is ensured that accelerometer watch core 6
It is cylindrical reliably to be fitted with the inwall of mounting groove 7, upper lid 2 and base 1 are connected into fastening with screw 3, make
Outer 6 circle of accelerometer watch core is in impaction state, completes being installed for accelerometer watch core 6.
The accelerometer watch core being installed is put into incubator carries out -40 DEG C~120 DEG C of temperature cycles treatment,
Heating rate is 3 DEG C/min~15 DEG C/min, is incubated 1 hour~3 hours, and cycle-index is 6 times
~10 times.
Accelerometer watch core is put into incubator afterwards, design temperature is 90 DEG C~120 DEG C, lasts 20 small
When~50 hours.
Whether accelerometer watch core is detected by accelerometer debugging box after the completion of temperature stabilization treatment
Normally.
If normal, the stabilization processes device being installed is fixed on vibration table surface, as
It is a kind of preferred embodiment with reference to Fig. 3, mounting hole 5 to be additionally provided with base 1 and upper lid 2, lead to
Cross the fixation that screw realizes stabilization processes device and vibration table surface.
Further, the frequency of shake table is adjusted to 20Hz~2000Hz, vibration level is set to
8g~20g, carries out the random vibration of 20 minutes~30 minutes.
For 14 accelerometers of same batch, wherein, 7 carry out stabilization processes, and 7 are not made
Stabilization processes.The six months stability of accelerometer bias for not doing stabilization processes is less than 30 μ g's
Ratio is 42%, using the three months stability of accelerometer constant multiplier of stabilization processes of the present invention
Ratio less than 30 μ g is 86%, therefore, stabilization processes of the present invention can effectively improve acceleration
The stability of watch core structure is counted, influence of the environmental load to accelerometer bias is reduced.
Although the present invention and its advantage has been described in detail it should be appreciated that without departing from by institute
Various changing can be carried out in the case of the spirit and scope of the present invention that attached claim is limited
Become, substitute and convert.And, scope of the present application be not limited only to process described by specification,
Equipment, means, the specific embodiment of method and steps.One of ordinary skilled in the art is from originally
Disclosure of the invention content will readily appreciate that, can be used according to the present invention and performed and phase described herein
Answer function or obtain result, the existing and future essentially identical with it that embodiment is essentially identical
Process to be developed, equipment, means, method or step.Therefore, appended claim
It is intended to include such process, equipment, means, method or step in the range of them.
Claims (7)
1. a kind of accelerometer watch core stabilization treatment method, it is characterised in that including：
Accelerometer watch core is attached in stabilization processes device；
Accelerometer watch core is carried out at temperature cycles with default heating rate in preset temperature range
Reason；
Accelerometer watch core is incubated the first preset duration under preset temperature；
Detect whether accelerometer watch core is normal after the completion of temperature stabilization treatment；
If it is, with predeterminated frequency, default vibration level and the second preset duration to stabilisation at
Reason device carries out random vibration.
2. accelerometer watch core stabilization treatment method according to claim 1, its feature exists
Include base and upper lid in, the stabilization processes device, set between the base and upper lid to
A few mounting groove, the installation for realizing accelerometer watch core is fixed, and the base and upper lid are logical
Screw is crossed to be fixed.
3. accelerometer watch core stabilization treatment method according to claim 2, its feature exists
In, accelerometer watch core is attached in stabilization processes device, including：
Accelerometer watch core is attached in the mounting groove so that the accelerometer watch core it is quick
Sense axle is parallel with level reference with the plane that output shaft is constituted, and balance staff is vertical with level reference.
4. accelerometer watch core stabilization treatment method according to claim 1, its feature exists
In the default heating rate is 3 DEG C/min~15 DEG C/min, and the preset temperature range is
- 40 DEG C~120 DEG C, cycle-index is 6 times~10 times.
5. accelerometer watch core stabilization treatment method according to claim 1, its feature exists
In the preset temperature is that 90 DEG C~120 DEG C first preset durations are 20 hours~50 hours.
6. accelerometer watch core stabilization treatment method according to claim 3, its feature exists
In after accelerometer watch core is attached in stabilization processes device, also including：
The stabilization processes device is fixed on vibration table.
7. accelerometer watch core stabilization treatment method according to claim 3, its feature exists
In the predeterminated frequency is 20Hz~2000Hz, and the default vibration level is 8g~20g, described
Second preset duration is 20 minutes~30 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510883638.9A CN106841678A (en) | 2015-12-04 | 2015-12-04 | Accelerometer watch core stabilization treatment method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510883638.9A CN106841678A (en) | 2015-12-04 | 2015-12-04 | Accelerometer watch core stabilization treatment method |
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| CN106841678A true CN106841678A (en) | 2017-06-13 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110887973A (en) * | 2019-12-11 | 2020-03-17 | 西安航天精密机电研究所 | Accelerometer core butt joint structure and method |
| CN112240938A (en) * | 2019-07-16 | 2021-01-19 | 苏州电器科学研究院股份有限公司 | Accelerometer stabilization processing method |
| CN114378723A (en) * | 2020-10-21 | 2022-04-22 | 航天科工惯性技术有限公司 | Processing method for improving bonding strength of accelerometer shell surface |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112240938A (en) * | 2019-07-16 | 2021-01-19 | 苏州电器科学研究院股份有限公司 | Accelerometer stabilization processing method |
| CN110887973A (en) * | 2019-12-11 | 2020-03-17 | 西安航天精密机电研究所 | Accelerometer core butt joint structure and method |
| CN110887973B (en) * | 2019-12-11 | 2023-10-20 | 西安航天精密机电研究所 | Accelerometer core butt joint structure and butt joint method |
| CN114378723A (en) * | 2020-10-21 | 2022-04-22 | 航天科工惯性技术有限公司 | Processing method for improving bonding strength of accelerometer shell surface |
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Application publication date: 20170613 |