JP2520370B2 - Load detection device for machine tool spindle - Google Patents
Load detection device for machine tool spindleInfo
- Publication number
- JP2520370B2 JP2520370B2 JP5341350A JP34135093A JP2520370B2 JP 2520370 B2 JP2520370 B2 JP 2520370B2 JP 5341350 A JP5341350 A JP 5341350A JP 34135093 A JP34135093 A JP 34135093A JP 2520370 B2 JP2520370 B2 JP 2520370B2
- Authority
- JP
- Japan
- Prior art keywords
- inner ring
- machine tool
- bearing type
- spindle
- type sensor
- 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 - Fee Related
Links
Landscapes
- Measurement Of Force In General (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Rolling Contact Bearings (AREA)
Description
【発明の詳細な説明】Detailed Description of the Invention
【０００１】[0001]
【産業上の利用分野】本発明は、工作機械の主軸に加わ
る荷重検出装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a load detecting device applied to a spindle of a machine tool.
【０００２】[0002]
【従来の技術】従来、回転軸に加わる荷重を測定する装
置として、例えば実開昭５９−６７６１７号公報、実開
昭６２−６２２０５号公報に示すように軸受の外輪に歪
ゲージを取り付け、該歪ゲージから得られる信号を処理
することにより、回転軸に加わる荷重の大きさ、方向を
測定することは公知である。2. Description of the Related Art Conventionally, as a device for measuring a load applied to a rotating shaft, a strain gauge is attached to an outer ring of a bearing as disclosed in, for example, Japanese Utility Model Publication Nos. 59-67617 and 62-62205. It is known to measure the magnitude and direction of a load applied to a rotating shaft by processing a signal obtained from a strain gauge.
【０００３】[0003]
【発明が解決しようとする課題】工作機械に於て、上記
従来技術を用いて回転軸に加わる荷重を検出しようとす
ると、工作機械のハウジング内に組み込まれた軸受に歪
ゲージを取り付けなければならないため、組み込むのが
困難であり組み込み後の調整ができず、しかも工作機械
本体の剛性を損なう恐れがあるという問題点があった。In order to detect the load applied to the rotary shaft in the machine tool using the above-mentioned conventional technique, the strain gauge must be attached to the bearing incorporated in the housing of the machine tool. Therefore, there is a problem in that it is difficult to assemble, adjustment after assembly is impossible, and the rigidity of the machine tool body may be impaired.
【０００４】[0004]
【課題を解決するための手段】本発明は上記問題点を解
決することを目的とし、工作機械の主軸先端部がハウジ
ング前面より突出し、該主軸先端に工具ホルダーを取り
付けた工作機械に於て、ハウジング前面より突出した主
軸先端部外周にころがり軸受型センサを配設し、該軸受
型センサの外輪をハウジング前面に固定した外輪ホルダ
ーに固定し、該外輪外周に歪ゲージを貼着し、主軸先端
部外周に筒状内輪ホルダーを固定し、該内輪ホルダーの
外周面に形成したねじと、外周面に軸受型センサ内輪を
嵌合した筒状の予圧調整部材の内周面に形成したねじと
を主軸先端側から螺合して、該内輪ホルダーと軸受型セ
ンサ内輪間に予圧調整部材を取り付け、該予圧調整部材
に形成した鍔部を上記内輪端面に当接して該内輪を所定
の圧力で押圧したことを特徴とする。SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems by providing a machine tool having a spindle tip of a machine tool protruding from the front surface of a housing and having a tool holder attached to the spindle tip. A rolling bearing type sensor is arranged on the outer circumference of the tip of the spindle protruding from the front of the housing, the outer ring of the bearing type sensor is fixed to an outer ring holder fixed to the front of the housing, and a strain gauge is attached to the outer circumference of the spindle. Secure the cylindrical inner ring holder to the outer circumference of the
The screw formed on the outer peripheral surface and the bearing type sensor inner ring on the outer peripheral surface
With the screw formed on the inner peripheral surface of the fitted cylindrical preload adjusting member
The preload adjusting member between the inner ring holder and the inner ring of the bearing type sensor by screwing the preload adjusting member.
The inner ring is fixed by abutting the flange portion formed on the
It is characterized by being pressed with the pressure of .
【０００５】[0005]
【作用】主軸が回転すると主軸と一体の軸受型センサの
内輪も一体に回転し、ボールが外輪に貼着した歪ゲージ
の位置を通過する度に発生する歪を歪ゲージで検出する
ことにより主軸に加わる荷重を検出する。[Operation] When the main shaft rotates, the inner ring of the bearing type sensor integrated with the main shaft also integrally rotates, and the strain gauge detects the strain generated each time the ball passes the position of the strain gauge attached to the outer ring. The load applied to is detected.
【０００６】[0006]
【実施例】次に図示した本発明の一実施例について詳細
に説明する。１は工作機械の主軸で、先端部はハウジン
グ２の前面２ａより所定長さ突出し、先端に工具３の工
具ホルダー４を取り付けている。ハウジング２の前面２
ａより突出した主軸１先端部外周に玉軸受型センサ５を
配設し、該玉軸受型センサ５の外輪６をハウジング２の
前面２ａに固定した外輪ホルダー７に固定し、外輪６外
周に歪ゲージ８を貼着し、主軸１先端部外周に筒状内輪
ホルダー９を固定し、該筒状内輪ホルダー９と玉軸受型
センサ５の内輪１０間に予圧調整部材１１を介装する。
この予圧調整部材１１は、内輪１０の主軸先端側端面に
当接する鍔部１１ａと、内周面にねじ１３を形成し、か
つ外周面に内輪１０を嵌合する筒部１１ｂとからなり、
該筒部１１ｂのねじ１３を筒状内輪ホルダー９の外周面
に形成したねじ１４に螺合して、内輪１０をボール１２
に所定の圧力で押圧している、主軸１はハウジング２内
の軸受に軸支されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, one embodiment of the present invention shown in the drawings will be described in detail. Reference numeral 1 is a spindle of a machine tool, a tip portion of which protrudes from a front surface 2a of a housing 2 by a predetermined length, and a tool holder 4 of a tool 3 is attached to the tip. Front 2 of housing 2
A ball bearing type sensor 5 is arranged on the outer periphery of the tip end of the main shaft 1 protruding from a, and an outer ring 6 of the ball bearing type sensor 5 is fixed to an outer ring holder 7 fixed to a front surface 2a of a housing 2 to distort the outer ring 6 A gauge 8 is attached, and a cylindrical inner ring is attached to the outer circumference of the tip of the spindle 1.
The holder 9 is fixed, and the cylindrical inner ring holder 9 and the ball bearing type
A preload adjusting member 11 is interposed between the inner rings 10 of the sensor 5 .
This preload adjusting member 11 is attached to the end surface of the inner ring 10 on the tip side of the main shaft.
Form the screw 13 on the flange portion 11a that abuts and the inner peripheral surface.
And a cylindrical portion 11b for fitting the inner ring 10 on the outer peripheral surface thereof,
The screw 13 of the tubular portion 11b is attached to the outer peripheral surface of the tubular inner ring holder 9.
The inner ring 10 is screwed onto the screw 14 formed on the
The main shaft 1, which is pressed by a predetermined pressure, is axially supported by bearings in the housing 2.
【０００７】次に作用について説明する。主軸１が回転
すると主軸１と一体の玉軸受型センサ５の内輪が一体に
回転し、ボール１２が歪ゲージ８の位置を通過する度に
発生する歪を歪ゲージで検出することにより主軸１に加
わる荷重を検出する。Next, the operation will be described. When the main spindle 1 rotates, the inner ring of the ball bearing type sensor 5 integrated with the main spindle 1 integrally rotates, and the strain gauge detects the strain generated each time the ball 12 passes the position of the strain gauge 8. Detect the applied load.
【０００８】[0008]
【発明の効果】本発明によると、工作機械の主軸先端部
がハウジング前面より突出し、該主軸先端に工具ホルダ
ーを取り付けた工作機械に於て、ハウジング前面より突
出した主軸先端部外周にころがり軸受型センサを配設
し、該軸受型センサの外輪をハウジング前面に固定した
外輪ホルダーに固定し、該外輪外周に歪ゲージを貼着
し、主軸先端部外周に筒状内輪ホルダーを固定し、該内
輪ホルダーの外周面に形成したねじと、外周面に軸受型
センサ内輪を嵌合した筒状の予圧調整部材の内周面に形
成したねじとを主軸先端側から螺合して、該内輪ホルダ
ーと軸受型センサ内輪間に予圧調整部材を取り付け、該
予圧調整部材に形成した鍔部を上記内輪端面に当接して
該内輪を所定の圧力で押圧したので、工作機械の主軸を
軸支しているハウジング内の軸受はそのまゝにし、工作
機械組み立て後、ハウジング前面に軸受型センサを後付
けにより取り付けているので組み付けが簡単であり、工
作機械の剛性を損なうことがなく、軸受型センサの調整
もハウジング外部で簡単容易に行うことができ、通常の
加工時軸受型センサが何等邪魔にならない。また、内輪
ホルダー外周側に予圧調整部材を介して軸受型センサ内
輪を取り付けるようにしたため、軸方向にコンパクトに
なリ、しかも、予圧調整部材自体を外部から内輪ホルダ
ーに直接螺合して軸受の予圧を調整するようにしたの
で、作業が容易である。 According to the present invention, in the machine tool in which the tip of the spindle of the machine tool projects from the front surface of the housing and the tool holder is attached to the tip of the spindle, the rolling bearing type is provided on the outer circumference of the spindle tip projecting from the front surface of the housing. It arranged a sensor, the outer ring of the bearing sensor is fixed to the fixed outer ring holder housing front, a strain gauge affixed to the outer race outer peripheral, a cylindrical inner ring holder fixed to the main shaft tip outer periphery, inner
Screws formed on the outer peripheral surface of the wheel holder and bearing type on the outer peripheral surface
Formed on the inner peripheral surface of a cylindrical preload adjusting member fitted with the sensor inner ring.
And forms a screw screwed from the spindle tip end side, fitted with a preload adjusting member between the inner wheel holder and bearing sensors inner ring, said
When the flange part formed on the preload adjusting member is brought into contact with the inner ring end surface,
Since the inner ring was pressed with a predetermined pressure, the bearing in the housing supporting the main shaft of the machine tool was kept as it was, and after the machine tool was assembled, the bearing type sensor was attached to the front of the housing by retrofitting. The assembly is easy, the rigidity of the machine tool is not impaired, the bearing type sensor can be easily adjusted outside the housing, and the bearing type sensor does not interfere during normal machining. Also, the inner ring
Inside the bearing type sensor via the preload adjustment member on the outer peripheral side of the holder
Since the wheel is attached, it is compact in the axial direction.
In addition, the preload adjustment member itself is externally attached to the inner ring holder.
It was screwed directly on the bearing to adjust the preload of the bearing.
It is easy to work with.
【図１】本発明の一実施例正断面図である。FIG. 1 is a front sectional view of an embodiment of the present invention.
１ 工作機械の主軸 ２ ハウジング ２ａ ハウジング前面 ３ 工具 ４ 工具ホルダー５ 玉軸受型センサ ６ 軸受型センサの外輪 ７ 外輪ホルダー ８ 歪ゲージ９ 筒状内輪ホルダー １０ 軸受型センサの内輪 １１ 予圧調整部材 １２ ボール1 Machine tool spindle 2 Housing 2a Housing front face 3 Tool 4 Tool holder 5 Ball bearing type sensor 6 Bearing type sensor outer ring 7 Outer ring holder 8 Strain gauge 9 Cylindrical inner ring holder 10 Bearing type sensor inner ring 11 Preload adjusting member 12 Ball
───────────────────────────────────────────────────── フロントページの続き 審査官 濱野 隆 (56)参考文献 実開 平２−107456（ＪＰ，Ｕ) 実開 平４−124437（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page Examiner Takashi Hamano (56) Bibliography 2-107456 (JP, U) Hei 4-124437 (JP, U)
Claims (1)
より突出し、該主軸先端に工具ホルダーを取り付けた工
作機械に於て、ハウジング前面より突出した主軸先端部
外周にころがり軸受型センサを配設し、該軸受型センサ
の外輪をハウジング前面に固定した外輪ホルダーに固定
し、該外輪外周に歪ゲージを貼着し、主軸先端部外周に
筒状内輪ホルダーを固定し、該内輪ホルダーの外周面に
形成したねじと、外周面に軸受型センサ内輪を嵌合した
筒状の予圧調整部材の内周面に形成したねじとを主軸先
端側から螺合して、該内輪ホルダーと軸受型センサ内輪
間に予圧調整部材を取り付け、該予圧調整部材に形成し
た鍔部を上記内輪端面に当接して該内輪を所定の圧力で
押圧した工作機械主軸の荷重検出装置。1. A machine tool having a spindle tip of a machine tool protruding from a front surface of a housing, and a tool holder attached to the tip of the spindle, wherein a rolling bearing type sensor is provided on an outer circumference of the spindle tip protruding from the front surface of the housing. , The outer ring of the bearing type sensor is fixed to the outer ring holder fixed to the front surface of the housing, and the strain gauge is attached to the outer circumference of the outer ring,
Fix the cylindrical inner ring holder and attach it to the outer peripheral surface of the inner ring holder.
The formed screw and the bearing type sensor inner ring were fitted on the outer peripheral surface.
The screw formed on the inner peripheral surface of the cylindrical preload adjusting member
It is screwed from the end side , a preload adjusting member is attached between the inner ring holder and the bearing type sensor inner ring, and the preload adjusting member is formed.
The collar is abutted against the end face of the inner ring, and the inner ring is
Load detection device for pressed machine tool spindle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5341350A JP2520370B2 (en) | 1993-12-10 | 1993-12-10 | Load detection device for machine tool spindle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5341350A JP2520370B2 (en) | 1993-12-10 | 1993-12-10 | Load detection device for machine tool spindle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07159260A JPH07159260A (en) | 1995-06-23 |
| JP2520370B2 true JP2520370B2 (en) | 1996-07-31 |
Family
ID=18345390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5341350A Expired - Fee Related JP2520370B2 (en) | 1993-12-10 | 1993-12-10 | Load detection device for machine tool spindle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2520370B2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02107456U (en) * | 1989-02-15 | 1990-08-27 | ||
| JPH04124437U (en) * | 1991-04-25 | 1992-11-12 | オークマ株式会社 | Bearing tightening force measuring device |
-
1993
- 1993-12-10 JP JP5341350A patent/JP2520370B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07159260A (en) | 1995-06-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4657412A (en) | Variable preload bearing assembly | |
| EP0357798A1 (en) | Method for detecting thrust force of main spindle of machine tool | |
| JPH086742B2 (en) | Bearing seat encoder mount for sensor device | |
| JP2520370B2 (en) | Load detection device for machine tool spindle | |
| US20060170415A1 (en) | Device for recording a rotational movement in a vehicle steering system | |
| JP2006057814A (en) | Bearing device for wheel | |
| JPH02164241A (en) | Pre-load quantity detector for angular contact type duplex ball bearing | |
| JP2604276Y2 (en) | Rolling bearing unit with rotation speed detection sensor | |
| JP2528784Y2 (en) | Rolling bearing with rotation speed detection sensor | |
| JPH0432041U (en) | ||
| JPH11264779A (en) | Torque and thrust detecting device | |
| JP2005133891A (en) | Preload measuring method and device for bearing | |
| JP3570688B2 (en) | Tool abnormality detection device | |
| JP2659549B2 (en) | Axle bearing rotation speed detector | |
| JP2004108406A (en) | Method and device for measuring rotational accuracy of rolling bearing | |
| JPS6123808Y2 (en) | ||
| JPH04310301A (en) | Spindle stock having highly accurate thrust bearing | |
| JPH0523136U (en) | Wheel speed detector | |
| JPH0635666U (en) | Bearing with sensor | |
| JPS62165851U (en) | ||
| JP3100551B2 (en) | Angle detecting device and handle rotation angle detecting device | |
| JPS6123807Y2 (en) | ||
| JPH04177136A (en) | Apparatus for measuring grinding force and cutting force by roller bearing | |
| JPH0119050Y2 (en) | ||
| JPH067302Y2 (en) | Magnetic rotary encoder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080517 Year of fee payment: 12 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090517 Year of fee payment: 13 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100517 Year of fee payment: 14 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110517 Year of fee payment: 15 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110517 Year of fee payment: 15 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120517 Year of fee payment: 16 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120517 Year of fee payment: 16 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130517 Year of fee payment: 17 |
|
| LAPS | Cancellation because of no payment of annual fees |