JPS5920104B2 - How to make an accelerometer from rod-shaped material - Google Patents
How to make an accelerometer from rod-shaped materialInfo
- Publication number
- JPS5920104B2 JPS5920104B2 JP53047595A JP4759578A JPS5920104B2 JP S5920104 B2 JPS5920104 B2 JP S5920104B2 JP 53047595 A JP53047595 A JP 53047595A JP 4759578 A JP4759578 A JP 4759578A JP S5920104 B2 JPS5920104 B2 JP S5920104B2
- Authority
- JP
- Japan
- Prior art keywords
- accelerometer
- slip detection
- rod
- base
- bar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000003801 milling Methods 0.000 description 2
- 210000002445 nipple Anatomy 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P21/00—Testing or calibrating of apparatus or devices covered by the preceding groups
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/16—Measuring force or stress, in general using properties of piezoelectric devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
- G01L23/22—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
- G01L23/221—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines for detecting or indicating knocks in internal combustion engines
- G01L23/222—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines for detecting or indicating knocks in internal combustion engines using piezoelectric devices
-
- 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
- G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
- G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
- G01P15/09—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by piezoelectric pick-up
- G01P15/0915—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by piezoelectric pick-up of the shear mode type
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Air Bags (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Description
【発明の詳細な説明】
本発明は棒状の素材から加速度計を製造する方法に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing an accelerometer from a bar-like material.
この場合、加速度計は１つのスタッドを有するベース、
複数のすべり検知素子、これらのすべり検知素子にそれ
ぞれ付属して協働する慣性質量体、これらのすべり検知
素子並びに慣性質量体をベースのスタッドに固定する１
つの円筒状のばねクリップ、すべり検知素子への電気的
接続用のプラグを有していてベースヘ固定される１つの
カバーから成つている。このような形式の加速度計はよ
く知られていて、温度係数が低く横力に影響されにくい
等の多くの利点を有している。しかしながら欠点として
その製造コストがあげられる。即ちその製造コストが加
速度計の寸法に反比例して増大し、そのコスト故に実施
不可能な場合もある。この製造コストの大半は個個の部
品の手仕事による組立費である。本発明は、この種の加
速度計の製造方法として手仕事を最小限にとどめた形式
のものを提供することを目的とし、特許請求の範囲に記
載の加工段階による製造方法によつてこの目的を達成し
ｚ本発明の方法の４つの段階はアタッチメントを備えた
自動旋盤による加工に適している。In this case, the accelerometer has a base with one stud,
A plurality of slip detection elements, an inertial mass body that is attached to and cooperates with each of these slip detection elements, and a part that fixes these slip detection elements and inertial mass bodies to a stud of a base.
It consists of a cover fixed to the base with two cylindrical spring clips and a plug for electrical connection to the slip detection element. This type of accelerometer is well known and has many advantages, such as low temperature coefficient and less sensitivity to lateral forces. However, a drawback is the manufacturing cost. That is, its manufacturing cost increases inversely with the size of the accelerometer, and may be impractical due to its cost. Most of this manufacturing cost is the manual assembly cost of individual parts. An object of the present invention is to provide a method for manufacturing this type of accelerometer in which manual labor is kept to a minimum, and this object is achieved by a manufacturing method using processing steps as described in the claims. The four steps of the method according to the invention achieved are suitable for machining on an automatic lathe with attachments.
次に図面に示した実施例について本発明を説明する：加
速度計のベース１はスタッド２と一体をなしており、ス
タッド２の側面と慣性質量体４との間に１つのすべり検
知素子として圧電素子３が配置されている。The invention will now be explained with reference to the embodiment shown in the drawings: the base 1 of the accelerometer is integral with a stud 2, and between the side of the stud 2 and the inertial mass 4 a piezoelectric element is used as a slip sensing element. Element 3 is arranged.
この圧電素子３と慣性質量体４とが３組互いに１２０度
の角度で配置されているので、その全体は１つのばねク
リップ５を介して所定位置で保持される。カバー１はベ
ース１上へ押し嵌められ、このカバーＴはばねクリップ
５又は慣性質量体４との接触を生ずる接触フィンガ（図
示せず）を有する１つの同軸プラグ６を備えている。こ
のような構成の加速度計を製造するための従来の方法は
次の通りであつた：スタツド２を有するベース１は棒状
の素材の旋削およびフライスによつて製作する。Since three sets of piezoelectric elements 3 and inertial masses 4 are arranged at an angle of 120 degrees with respect to each other, the whole is held in place via one spring clip 5. The cover 1 is pressed onto the base 1, and this cover T is provided with one coaxial plug 6 with a contact finger (not shown) making contact with the spring clip 5 or the inertial mass 4. The conventional method for manufacturing an accelerometer of this construction was as follows: the base 1 with the studs 2 is produced by turning and milling a rod-shaped material.
カバー７用の肩部は旋削によつて、スバナ用の六角頭部
はフライスによつて加工する。ベース１は後にねじ付け
られるニツプルと共に棒材８の突切りによつて加工する
。慣性質量体４は第２の棒材のフラィスカｌ＝のこ盤お
よび研削によつて製作する。圧電素子３は一時的にスタ
ツド２に固定し、慣性質量体４は圧電素子３に一時的に
固定する。この仮組立の状態で適当なジグでばねクリツ
プ５を嵌め付ける。最後に、同軸プラグ６とは別個に製
作したカバー７をベース１へ嵌め付ける。このような従
来の方法は手仕事による組立作業が多く、従つて、例え
ば加速度計が高い周波数上限用として設計されている場
合のように圧電素子や慣性質量体が極めて小さな寸法の
ものである時著しい困難を伴う。The shoulders for the cover 7 are machined by turning, and the hexagonal heads for the swivels are machined by milling. The base 1 is machined by cutting off a bar 8 together with nipples to be screwed on later. The inertial mass 4 is manufactured by sawing and grinding the second bar. The piezoelectric element 3 is temporarily fixed to the stud 2, and the inertial mass 4 is temporarily fixed to the piezoelectric element 3. In this temporarily assembled state, the spring clip 5 is fitted using a suitable jig. Finally, a cover 7 manufactured separately from the coaxial plug 6 is fitted onto the base 1. These traditional methods require a lot of manual assembly and are therefore difficult to use when the piezoelectric elements or inertial masses are of very small dimensions, for example when accelerometers are designed for high frequency limits. with significant difficulty.
次に第２図に従つて本発明の方法を述べる。Next, the method of the present invention will be described with reference to FIG.
図Ａで示すように先ず自動旋盤上で棒材８を旋削してカ
バー１の内径に適合した外径ａにし、Ｂ，Ｃ図で示され
ているように３つのスリツト９を棒材８の軸線から間隔
ｂをおいて軸線方向に形成する。このスリツト９の深さ
は圧電素子３の高さをわずかに上回る。図Ｄでは圧電素
子３の１つがスリツト９の１つに押し込まれた状態が示
されている。図Ｅにおいては、円筒周面を有するばねク
リツプ５が差し嵌められて、図で見てその右端がスリツ
ト９内の圧電素子３の内方端部と同列に位置することに
なる状態が示されている。図Ｆ′８＆ζスリツト９の底
が個所ｃの切削によつて除去された状態で示されている
。かくして慣性質量体４並びに圧電素子３はたんにばね
クリツプ５によつて所定位置に保持されるだけとなる。
このようにして手仕事なしに加速度計の種種の部品の正
確な組付けが行なえる。図Ｇにおいては、本発明の対象
外であつて前もつて製作されているカバー７を棒材８上
へ押し嵌めた状態で示している。このようにして接触ば
ね１０がばねクリツプ５と接触して同軸プラグ６とのコ
ネクタを構成し、カバー７は外部コネクタを構成する。
棒材８はカバー７の後端において切削し、ニツプルの形
に切削し、最後に図Ｈで示すように棒材８を切り離す。
以上の本発明の方法は３つの圧電素子を有する加速度計
の製作について述べたのであるが、２つ又は４つ以上の
数の圧電素子を有する加速度計の場合もスリツトの配置
を異にするのみで何ら問題はない。As shown in Figure A, the bar 8 is turned on an automatic lathe to have an outer diameter a that matches the inner diameter of the cover 1, and as shown in Figures B and C, three slits 9 are cut into the bar 8. It is formed in the axial direction at a distance b from the axis. The depth of this slit 9 slightly exceeds the height of the piezoelectric element 3. In FIG. D, one of the piezoelectric elements 3 is shown pushed into one of the slits 9. In FIG. E, a spring clip 5 with a cylindrical circumferential surface is inserted so that its right end, as seen in the figure, is located flush with the inner end of the piezoelectric element 3 in the slit 9. ing. FIG. F'8&ζThe bottom of the slit 9 is shown removed by cutting at point c. The inertial mass 4 as well as the piezoelectric element 3 are thus only held in position by the spring clip 5.
In this way, accurate assembly of the various parts of the accelerometer can be performed without manual labor. In FIG. G, a previously manufactured cover 7, which is outside the scope of the invention, is shown pressed onto the bar 8. In this way, the contact spring 10 comes into contact with the spring clip 5 and constitutes a connector with the coaxial plug 6, and the cover 7 constitutes an external connector.
The bar 8 is cut at the rear end of the cover 7, cut into the shape of a nipple, and finally the bar 8 is separated as shown in Figure H.
The above method of the present invention has been described for manufacturing an accelerometer having three piezoelectric elements, but it can also be used for accelerometers having two or four or more piezoelectric elements by simply arranging the slits differently. There's no problem with that.
第１図は本発明の実施例の加速度計の分解図、第２図は
第１図の加速度計の製造段階を示す縦断面図である。
１・・・ベース、２・・・スタツド、３・・・圧電素子
、４・・・慣性質量体；５・・・ばねクリツプ、６・・
・同軸プラグ、７・・・カバー、８・・・棒材、９・・
・スリツト、１０・・・接触ばね。FIG. 1 is an exploded view of an accelerometer according to an embodiment of the present invention, and FIG. 2 is a longitudinal sectional view showing the manufacturing steps of the accelerometer of FIG. DESCRIPTION OF SYMBOLS 1... Base, 2... Stud, 3... Piezoelectric element, 4... Inertial mass body; 5... Spring clip, 6...
・Coaxial plug, 7...cover, 8...rod, 9...
・Slit, 10...Contact spring.
Claims (1)
加速度計が１つのスタッドを有するベースと、複数のす
べり検知素子と、これらのすべり検知素子それぞれに付
属して協働する慣性質量体と、これらのすべり検知素子
並びに慣性質量体をベースのスタッドに固定する１つの
円筒状のばねクリップと、すべり検知素子への電気的接
続用のプラグを有していてベースに固定される１つのカ
バーとから成つているものにおいて、１）棒材にその軸
線と平行であつてすべり検知素子自体の高さ寸法よりも
大きな深さを有する複数のスリットを切削する段階と、
２）これらのスリット内へすべり検知素子を挿入する段
階と、３）円筒状のばねクリップを棒材のスリットを有
している部分へ嵌め付ける段階と、４）スリットの底を
なしている棒材部分を除去するために棒材を半径方向で
切削する段階との４つの段階を特徴とする、棒状の素材
から加速度計を製造する方法。1. A method of manufacturing an accelerometer from a rod-shaped material,
The accelerometer has a base having one stud, a plurality of slip detection elements, an inertial mass attached to and cooperating with each of these slip detection elements, and these slip detection elements and inertial masses attached to the stud of the base. consisting of a fixed cylindrical spring clip and a cover fixed to the base with a plug for electrical connection to the slip detection element, comprising: 1) a bar with its axis; cutting a plurality of slits parallel to the slide sensing element and having a depth greater than the height dimension of the slip detection element itself;
2) inserting the slip detection elements into these slits; 3) fitting a cylindrical spring clip into the part of the bar having the slit; and 4) the bar forming the bottom of the slit. 1. A method for manufacturing an accelerometer from a rod-shaped material, characterized by four steps, including the step of radially cutting the rod to remove a section of material.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK000001814/77 | 1977-04-26 | ||
| DK181477AA DK139793B (en) | 1977-04-26 | 1977-04-26 | Method for manufacturing an electromechanical force meter. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS541075A JPS541075A (en) | 1979-01-06 |
| JPS5920104B2 true JPS5920104B2 (en) | 1984-05-10 |
Family
ID=8108249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53047595A Expired JPS5920104B2 (en) | 1977-04-26 | 1978-04-21 | How to make an accelerometer from rod-shaped material |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS5920104B2 (en) |
| DE (1) | DE2817981C3 (en) |
| DK (1) | DK139793B (en) |
| FR (1) | FR2389113A1 (en) |
| GB (1) | GB1575784A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021244815A1 (en) | 2020-06-02 | 2021-12-09 | Kistler Holding Ag | Acceleration sensor and use of such an acceleration sensor |
-
1977
- 1977-04-26 DK DK181477AA patent/DK139793B/en unknown
-
1978
- 1978-04-21 JP JP53047595A patent/JPS5920104B2/en not_active Expired
- 1978-04-24 DE DE2817981A patent/DE2817981C3/en not_active Expired
- 1978-04-25 FR FR7812205A patent/FR2389113A1/en active Granted
- 1978-04-26 GB GB16462/78A patent/GB1575784A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2817981C3 (en) | 1980-09-25 |
| FR2389113B3 (en) | 1980-12-19 |
| DK139793B (en) | 1979-04-17 |
| DE2817981B2 (en) | 1980-01-24 |
| JPS541075A (en) | 1979-01-06 |
| DK139793C (en) | 1979-09-24 |
| GB1575784A (en) | 1980-09-24 |
| DK181477A (en) | 1978-10-27 |
| DE2817981A1 (en) | 1978-12-07 |
| FR2389113A1 (en) | 1978-11-24 |
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