JPH06344187A - Motor press device - Google Patents

Motor press device

Info

Publication number
JPH06344187A
JPH06344187A JP13368393A JP13368393A JPH06344187A JP H06344187 A JPH06344187 A JP H06344187A JP 13368393 A JP13368393 A JP 13368393A JP 13368393 A JP13368393 A JP 13368393A JP H06344187 A JPH06344187 A JP H06344187A
Authority
JP
Japan
Prior art keywords
fixed
ball screw
bearing
case
shaft
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.)
Pending
Application number
JP13368393A
Other languages
Japanese (ja)
Inventor
Shuji Sato
修二 佐藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ueno Seiki Co Ltd
Original Assignee
Ueno Seiki Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ueno Seiki Co Ltd filed Critical Ueno Seiki Co Ltd
Priority to JP13368393A priority Critical patent/JPH06344187A/en
Publication of JPH06344187A publication Critical patent/JPH06344187A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/18—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by screw means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/0094—Press load monitoring means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Presses And Accessory Devices Thereof (AREA)
  • Press Drives And Press Lines (AREA)
  • Lead Frames For Integrated Circuits (AREA)

Abstract

PURPOSE:To miniaturize a motor press device, and to prevent the disconnection of wiring, etc., by sliding and supporting a sliding bearing with a ball screw nut screwed down on a ball screw shaft and on the inner surface of a hollow ram shaft fixed on a nut holder, and supporting the outer surface of the hollow ram shaft by a sliding bearing fixed on a case. CONSTITUTION:This device is rotated and driven by a motor 2. One end of a ball screw shaft 8 is supported by a bearing 7 fixed on a case 1, and the other end is fixed on the inner ring of a rolling bearing 13. A sliding bearing 14 is fixed on the outer ring of the rolling bearing 13 through a bearing holder 15, and is slid and supported on the inner surface of a hollow ram shaft 11 fixed by a ball screw nut 9 and a nut holder 10. The outer surface of the hollow ram shaft is supported by a sliding bearing 12 fixed on the case 1, and the device can be made smaller by rotating the ball screw shaft 8 forward and backward direction and elevating and lowering the hollow ram shaft 11. Also, since a strain gage 19 is mounted on the upper part of the case 1, a pressure and a detecting force can be detected.

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、モータで駆動される半
導体リード成形装置等のプレス装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressing device such as a semiconductor lead forming device driven by a motor.

【０００２】[0002]

【従来の技術】ねじを回転させてナットを精度よく昇降
させる場合、ねじの両端付近を軸受で支持する方法が一
般的であるが、図３のようにストロークの２倍以上の移
動可能空間が必要となり、外形が大きくなる。2. Description of the Related Art In the case of rotating a screw to move a nut up and down with high accuracy, it is common to support both ends of the screw with bearings, but as shown in FIG. It becomes necessary and the outer shape becomes large.

【０００３】また、プレス圧力を検出する方法として、
ラムに小型ロードセルを組み込む方法があるが、ラムは
上下動を繰り返し行い、衝撃を伴うため、ロードセルの
配線切れ等のトラブルが発生し易い。Further, as a method for detecting the press pressure,
There is a method of incorporating a small load cell into the ram, but the ram repeatedly moves up and down and is accompanied by shock, so troubles such as wiring breakage of the load cell are likely to occur.

【０００４】[0004]

【発明が解決しようとする課題】本発明が解決すべき課
題は、モータプレス装置の形状小型化、および配線切れ
等のトラブルの防止を図ることにある。SUMMARY OF THE INVENTION The problems to be solved by the present invention are to reduce the size of the motor press device and to prevent troubles such as wire breakage.

【０００５】[0005]

【課題を解決するための手段】前記課題を解決するた
め、本発明のプレス装置は、モータによって回転駆動さ
れるボールねじ軸の一端を、ケースに固定された軸受で
支持し、前記ボールねじ軸の他端をころがり軸受の内輪
に固定し、同ころがり軸受の外輪に、軸受ホルダーを介
してすべり軸受を固定し、前記ボールねじ軸に螺合され
たボールねじナットとナットホルダーに固定された中空
ラム軸の内面ですべり軸受をスライド支持し、中空ラム
軸外面をケースに固定されたすべり軸受で支持した。In order to solve the above-mentioned problems, the press device according to the present invention supports one end of a ball screw shaft rotatably driven by a motor by means of a bearing fixed to a case. The other end is fixed to the inner ring of the rolling bearing, the slide bearing is fixed to the outer ring of the rolling bearing via a bearing holder, and the ball screw nut screwed to the ball screw shaft and the hollow fixed to the nut holder The slide bearing was slidably supported on the inner surface of the ram shaft, and the outer surface of the hollow ram shaft was supported by a slide bearing fixed to the case.

【０００６】さらに、ケース上部に、加圧力を検出する
ための歪ゲージを取り付けた構造とした。Further, a strain gauge for detecting the pressing force is attached to the upper part of the case.

【０００７】[0007]

【作用】本発明は、モータによって回転駆動され、ボー
ルねじ軸の一端をケースに固定された軸受で支持し、ボ
ールねじのもう一端はころがり軸受の内輪を固定し、こ
ろがり軸受の外輪には軸受ホルダーを介してすべり軸受
を固定し、ボールねじナットとナットホルダーに固定さ
れた中空ラム軸の内面でスライド支持する。中空ラム軸
外面はケースに固定されたすべり軸受で支持し、ボール
ねじを正逆回転させ中空ラム軸を昇降させることにより
前記課題の小型化を図った。According to the present invention, one end of a ball screw shaft is rotatably driven by a motor and is supported by a bearing fixed to a case, the other end of the ball screw fixes an inner ring of a rolling bearing, and the outer ring of the rolling bearing has a bearing. The slide bearing is fixed through the holder, and it is slidably supported by the ball screw nut and the inner surface of the hollow ram shaft fixed to the nut holder. The outer surface of the hollow ram shaft is supported by a slide bearing fixed to the case, and the ball screw is rotated in the forward and reverse directions to move the hollow ram shaft up and down to reduce the size of the problem.

【０００８】さらに、ケース上部に設けられた歪ゲージ
により、固定側軸受とボルトで締結されたケース上部が
引き上げられたときのたわみによる応力を検出し、制御
系へフィードバックして圧力を検出する。Further, the strain gauge provided on the upper part of the case detects the stress due to the bending when the upper part of the case, which is fastened to the stationary bearing by the bolt, is pulled up, and is fed back to the control system to detect the pressure.

【０００９】[0009]

【実施例】以下、本発明を図面に示す実施例に基づいて
具体的に説明する。図１は本発明の実施例を示す一部切
欠斜視図である。同図において、１はケース、２はケー
スの後方に取り付けられたサーボモータ、３，５はタイ
ミングプーリであり、タイミングベルト４が掛けられて
いる。６は電磁ブレーキ、７はタイミングプーリ５によ
って回転駆動されるボールねじ軸８の一端を支持する固
定側軸受、９はナットホルダー１０に支持されたボール
ねじナット、１１はボールねじ軸８の外周を包むように
配置され上端をナットホルダー１０に固定された中空ラ
ム軸、１２はケース１に固定されて中空ラム軸１０を支
持するすべり軸受、１３はボールねじ軸８の他端を支持
するころがり軸受、１５は軸受ホルダー、１６はラム先
端部、１７はカムフォロア、１８はガイド板、１９は歪
ゲージ、２０はケース上部である。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below based on the embodiments shown in the drawings. FIG. 1 is a partially cutaway perspective view showing an embodiment of the present invention. In the figure, 1 is a case, 2 is a servomotor attached to the rear of the case, 3 and 5 are timing pulleys, on which a timing belt 4 is hung. 6 is an electromagnetic brake, 7 is a fixed side bearing that supports one end of a ball screw shaft 8 that is rotationally driven by the timing pulley 5, 9 is a ball screw nut supported by a nut holder 10, and 11 is the outer circumference of the ball screw shaft 8. A hollow ram shaft which is arranged so as to be wrapped and whose upper end is fixed to the nut holder 10, 12 is a sliding bearing which is fixed to the case 1 and supports the hollow ram shaft 10, 13 is a rolling bearing which supports the other end of the ball screw shaft 8, Reference numeral 15 is a bearing holder, 16 is a ram tip portion, 17 is a cam follower, 18 is a guide plate, 19 is a strain gauge, and 20 is an upper part of the case.

【００１０】加圧力検出は、ラム軸１１が加工物を加圧
することによりボールねじナット９、ボールねじ軸８、
固定側軸受７を介してケース上部２０に撓みを発生さ
せ、そこに取り付けた歪ゲージ１９にて加圧力を検出
し、制御系にフィードバックすることにより異常な加工
状態による事故防止を行う。The pressing force is detected by pressing the workpiece with the ram shaft 11 so that the ball screw nut 9, the ball screw shaft 8,
Bending is generated in the case upper portion 20 via the stationary bearing 7, a pressing force is detected by a strain gauge 19 attached thereto, and the pressure is fed back to a control system to prevent an accident due to an abnormal working state.

【００１１】本実施例では、サーボモータ２によって回
転駆動され、ボールねじ軸８の一端をケース１に固定さ
れた軸受７で支持し、ボールねじ軸８のもう一端はころ
がり軸受１３の内輪を固定し、ころがり軸受１３の外輪
には軸受ホルダー１５を介してすべり軸受１４を固定
し、ボールねじナット９とナットホルダー１０に固定さ
れた中空ラム軸１１の内面でスライド支持する。中空ラ
ム軸１１の外面はケース１に固定されたすべり軸受１２
で支持し、ボールねじ軸８を正逆回転させ中空ラム軸１
１を昇降させる。In this embodiment, the ball screw shaft 8 is rotatably driven by the servomotor 2, and one end of the ball screw shaft 8 is supported by the bearing 7 fixed to the case 1. The other end of the ball screw shaft 8 fixes the inner ring of the rolling bearing 13. Then, the slide bearing 14 is fixed to the outer ring of the rolling bearing 13 via a bearing holder 15, and is slidably supported by the inner surface of the hollow ram shaft 11 fixed to the ball screw nut 9 and the nut holder 10. The outer surface of the hollow ram shaft 11 is a slide bearing 12 fixed to the case 1.
Supported by the hollow ram shaft 1 by rotating the ball screw shaft 8 forward and backward.
Raise and lower 1.

【００１２】図２（（ａ）は縦断面図、（ｂ）は（ａ）
におけるＡ−Ａ断面図）は、中空ラム軸１１を昇降させ
たときのストロークを示す概略図である。FIG. 2 (a) is a longitudinal sectional view, and FIG. 2 (b) is (a).
(A-A cross-sectional view) is a schematic diagram showing a stroke when the hollow ram shaft 11 is moved up and down.

【００１３】従来のプレス装置を示す図３（（ａ）は縦
断面図、（ｂ）は（ａ）におけるＢ−Ｂ断面図、（ｃ）
は（ａ）におけるＣ−Ｃ断面図）と比較して、小型化さ
れたことが分かる。FIG. 3 (a) is a longitudinal sectional view, (b) is a BB sectional view in (a), and (c) shows a conventional pressing device.
It can be seen that is smaller in size compared to (C-C cross-sectional view in (a)).

【００１４】図４は加圧前の歪ゲージ１９取付部の概略
図、図５は加圧時、反力がボールねじ軸８を伝って歪ゲ
ージ１９にたわみδを発生させた概略図を示す。FIG. 4 is a schematic view of the mounting portion of the strain gauge 19 before the pressurization, and FIG. 5 is a schematic view of the strain gauge 19 having a deflection δ generated by the reaction force transmitted through the ball screw shaft 8 during the pressurization. .

【００１５】モータ２によって回転駆動されたボールね
じ軸８により、ボールねじナット９に固定されたナット
ホルダー１０、中空ラム軸１１、ラム先端部１６が下降
し、加工物を加圧すると、反力がラム先端部１６、中空
ラム軸１１、ナットホルダー１０、ボールねじナット
９、ボールねじ軸を伝って、固定側軸受７を押し上げ
る。固定側軸受７とボルトで締結されたケース上部２０
が引き上げられ、たわみを生じて、ケース上部２０に取
り付けられた歪ゲージ１９に歪を発生させ、応力を検出
し、制御系へフィードバックして圧力を検出する。図
４，５中、２１はスペーサーである。The ball screw shaft 8 rotated by the motor 2 lowers the nut holder 10, the hollow ram shaft 11, and the ram tip 16 which are fixed to the ball screw nut 9, and pressurizes the workpiece, so that a reaction force is exerted. Moves through the ram tip 16, the hollow ram shaft 11, the nut holder 10, the ball screw nut 9, and the ball screw shaft, and pushes up the stationary bearing 7. Upper part 20 of case fixed to bearing 7 on fixed side with bolts
Is pulled up to cause a deflection, a strain is generated in the strain gauge 19 attached to the case upper portion 20, the stress is detected, and the pressure is fed back to the control system to detect the pressure. In FIGS. 4 and 5, 21 is a spacer.

【００１６】[0016]

【発明の効果】上述したように、本発明によれば、中空
ラム軸内にボールねじ軸を配置した構造としたので、プ
レス装置を小型化できる。また、ケース上部に歪ゲージ
を取り付けたので、加圧力を検出することができる。As described above, according to the present invention, since the ball screw shaft is arranged in the hollow ram shaft, the press device can be downsized. Further, since the strain gauge is attached to the upper part of the case, the applied pressure can be detected.

【図面の簡単な説明】[Brief description of drawings]

【図１】 本発明の実施例を示す一部切欠斜視図であ
る。FIG. 1 is a partially cutaway perspective view showing an embodiment of the present invention.

【図２】 本発明による小型化の効果を示す概略図であ
る。FIG. 2 is a schematic view showing an effect of miniaturization according to the present invention.

【図３】 従来のプレス装置の構造を示す図である。FIG. 3 is a diagram showing a structure of a conventional pressing device.

【図４】 加圧前の歪ゲージ取付部の概略図である。FIG. 4 is a schematic view of a strain gauge mounting portion before pressurization.

【図５】 加圧時、反力がボールねじ軸を伝って歪ゲー
ジにたわみを発生させた概略図である。FIG. 5 is a schematic diagram in which a reaction force is transmitted along a ball screw shaft to cause a strain gauge to bend when being pressurized.

【符号の説明】[Explanation of symbols]

１ ケース、２ サーボモータ、３，５ タイミングプ
ーリ、４ タイミングベルト、６ 電磁ブレーキ、７
固定側軸受、８ ボールねじ軸、９ ボールねじナッ
ト、１０ ナットホルダー、１１ 中空ラム軸、１２
すべり軸受、１３自由側ころがり軸受、１４ すべり軸
受、１５ 軸受ホルダー、１６ ラム先端部、１７ カ
ムフォロア、１８ ガイド板、１９ 歪ゲージ、２０
ケース上部、２１ スペーサー1 case, 2 servo motor, 3,5 timing pulley, 4 timing belt, 6 electromagnetic brake, 7
Fixed bearing, 8 ball screw shafts, 9 ball screw nuts, 10 nut holders, 11 hollow ram shafts, 12
Slide bearing, 13 rolling bearing on free side, 14 slide bearing, 15 bearing holder, 16 ram tip, 17 cam follower, 18 guide plate, 19 strain gauge, 20
Upper case, 21 spacers

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 モータ（２）によって回転駆動されるボ
ールねじ軸（８）の一端を、ケース（１）に固定された
軸受（７）で支持し、前記ボールねじ軸（８）の他端を
ころがり軸受（１３）の内輪に固定し、同ころがり軸受
（１３）の外輪に、軸受ホルダー（１５）を介してすべ
り軸受（１４）を固定し、前記ボールねじ軸（８）に螺
合されたボールねじナット（９）とナットホルダー（１
０）に固定された中空ラム軸（１１）の内面ですべり軸
受（１４）をスライド支持し、中空ラム軸（１１）外面
をケース（１）に固定されたすべり軸受（１２）で支持
したことを特徴とするモータプレス装置。1. A ball screw shaft (8), which is driven to rotate by a motor (2), has one end supported by a bearing (7) fixed to the case (1), and the other end of the ball screw shaft (8). Is fixed to the inner ring of the rolling bearing (13), the sliding bearing (14) is fixed to the outer ring of the rolling bearing (13) via the bearing holder (15), and is screwed to the ball screw shaft (8). Ball screw nut (9) and nut holder (1
The slide bearing (14) is slidably supported on the inner surface of the hollow ram shaft (11) fixed to (0), and the outer surface of the hollow ram shaft (11) is supported by the slide bearing (12) fixed to the case (1). A motor press device characterized by. 【請求項２】 ケース上部（２０）に、加圧力を検出す
るための歪ゲージ（１９）を取り付けたことを特徴とす
る請求項１記載のモータプレス装置。2. The motor press device according to claim 1, wherein a strain gauge (19) for detecting a pressing force is attached to an upper part (20) of the case.
JP13368393A 1993-06-03 1993-06-03 Motor press device Pending JPH06344187A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13368393A JPH06344187A (en) 1993-06-03 1993-06-03 Motor press device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13368393A JPH06344187A (en) 1993-06-03 1993-06-03 Motor press device

Publications (1)

Publication Number Publication Date
JPH06344187A true JPH06344187A (en) 1994-12-20

Family

ID=15110440

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13368393A Pending JPH06344187A (en) 1993-06-03 1993-06-03 Motor press device

Country Status (1)

Country Link
JP (1) JPH06344187A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006263821A (en) * 2006-05-17 2006-10-05 Janome Sewing Mach Co Ltd Portable electrically driven press
WO2012096391A1 (en) * 2011-01-13 2012-07-19 Sintokogio, Ltd. Electric cylinder system
US20140102269A1 (en) * 2011-06-08 2014-04-17 Yantai Luchen-Seawoo Cnc Machinery Co., Ltd Precision CNC Facing Lathe
JP2014528359A (en) * 2011-10-03 2014-10-27 アトラス・コプコ・インダストリアル・テクニーク・アクチボラグ Screw-operated press unit
WO2015056469A1 (en) * 2013-10-16 2015-04-23 新東工業株式会社 Multiple-spindle electric press
CN114340883A (en) * 2019-09-06 2022-04-12 新东工业株式会社 Electric cylinder system and abnormality detection method for electric cylinder
WO2023126138A1 (en) * 2021-12-28 2023-07-06 Hydac Systems & Services Gmbh Electromechanical cylinder

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006263821A (en) * 2006-05-17 2006-10-05 Janome Sewing Mach Co Ltd Portable electrically driven press
WO2012096391A1 (en) * 2011-01-13 2012-07-19 Sintokogio, Ltd. Electric cylinder system
JP2012147606A (en) * 2011-01-13 2012-08-02 Sintokogio Ltd Electrically driven cylinder system
CN103314237A (en) * 2011-01-13 2013-09-18 新东工业株式会社 Electric cylinder system
CN103314237B (en) * 2011-01-13 2016-03-16 新东工业株式会社 Electric cylinder system
US9415557B2 (en) 2011-01-13 2016-08-16 Sintokogio, Ltd. Electric cylinder system
US9623530B2 (en) * 2011-06-08 2017-04-18 Yantai Luchen-Seawoo Cnc Machinery Co., Ltd Precision CNC facing lathe
US20140102269A1 (en) * 2011-06-08 2014-04-17 Yantai Luchen-Seawoo Cnc Machinery Co., Ltd Precision CNC Facing Lathe
JP2014528359A (en) * 2011-10-03 2014-10-27 アトラス・コプコ・インダストリアル・テクニーク・アクチボラグ Screw-operated press unit
WO2015056469A1 (en) * 2013-10-16 2015-04-23 新東工業株式会社 Multiple-spindle electric press
JPWO2015056469A1 (en) * 2013-10-16 2017-03-09 新東工業株式会社 Multi-axis electric press
CN114340883A (en) * 2019-09-06 2022-04-12 新东工业株式会社 Electric cylinder system and abnormality detection method for electric cylinder
US20220324190A1 (en) * 2019-09-06 2022-10-13 Sintokogio, Ltd. Electric cylinder system and method of detecting abnormality of electric cylinder
US11752721B2 (en) * 2019-09-06 2023-09-12 Sintokogio, Ltd. Electric cylinder system and method of detecting abnormality of electric cylinder
WO2023126138A1 (en) * 2021-12-28 2023-07-06 Hydac Systems & Services Gmbh Electromechanical cylinder

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