Classifications

• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
  • H02K7/20—Structural association with auxiliary dynamo-electric machines, e.g. with electric starter motors or exciters
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
  • G01P1/00—Details of instruments
  • G01P1/02—Housings
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
  • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
  • H02K11/21—Devices for sensing speed or position, or actuated thereby

Definitions

• the present invention relates to an apparatus for coupling a servomotor and a rotation detector for detecting a rotation output of the servomotor.
• Servo motors and rotation detectors are widely used for servo control of machine tools and industrial robots.
• a servomotor is used as an image driving source of a worktable.
• an image detector such as a rotary encoder for detecting the rotation output of the servo motor is connected to the servo motor via coupling means. .
• a joint means such as a flexible cup ring or a dedam cutlet ring or the like is used for the servo motor and the tillage detector.
• a method of intervening between them was adopted.
• the flexible coupling generally has insufficient rigidity, and the misalignment of the axis between the servomotor and the rotation detector is absorbed by the flexible force ring.
• the flexible kapping is easily damaged.
• an Oldham coupling is used: A play easily occurs in the middle of the rotation transmission path in the Oldham coupling. Therefore, there is a limit to the rotation transmission accuracy.
• an object of the present invention is to eliminate the drawback of the conventional power coupling means between the servomotor and the rotation detector, and to accurately detect the image output force of the servomotor by the tillage detector.
• Another object of the present invention is to provide a device for coupling a servomotor and a tillage detector, which can increase the coupling rigidity between the servomotor and the imager detector in the direction of tillage.
• a motor housing a servomotor having an output port rotatably supported by the motor housing, a detector housing, an input shaft rotatably supported by the detector housing, and the detector
• a device for coupling an image detector having a detection unit for detecting a rotation amount of the input shaft with respect to a housing is used to securely fasten the output shaft and the input shaft coaxially.
• the housing connecting means has a flat plate spring extending along a circumference concentric with the output port and the input port, and a plurality of housing fastening bolts.
• the flat spring is fixed to the motor housing and the detector housing by the housing fastening bolt so as to allow relative displacement in the ⁇ direction between the motor housing and the detector housing and to suppress relative torsional displacement. ing.
• the flat spring suppresses the torsional displacement between the motor housing and the detector housing, so that the tilling transmission accuracy does not decrease.
• the flat spring allows a relative axial displacement between the motor housing and the detector housing, the axial dimensional tolerance when the output shaft and the input shaft are fastened can be smoothly absorbed.
• flat springs can be used to control the displacement of the output shaft and input ⁇ direction due to heat generated by the servomotor. Can be absorbed. Therefore, no excessive stress is applied to the servo motor or the image detector.
• FIG. 1 is a half sectional view showing a preferred embodiment of an apparatus for coupling a servomotor and a rotation detector according to the present invention
• FIG. 2 is a partially enlarged sectional view of the device shown in FIG. 1,
• FIG. 3 is a front view of a flat spring used in the apparatus shown in FIG.
• the servomotor 10 has a motor housing 12 indicated generally at 12.
• the motor housing 12 includes a front motor casing 16 disposed at the front end of the stator 14 and a rear motor casing 18 disposed at the rear end of the stator 14. Consists of The casings 16 and 18 and the stator 14 are fastened and fixed by a through bolt (not shown).
• the output ⁇ 20 is rotatably supported by casings 16 and 18 via bearings 22 and 24. Between the casings 16 and 18, the port 26 is fixed to the output ⁇ 20.
• the front end 28 of the output ⁇ 20 extends forward of the front mo- ting 16.
• the rear end 30 of the output 20 extends rearward of the bearing 24 provided in the rear motoring 18.
• the rotary encoder which is a rotation detector, is generally indicated by reference numeral 32.
• the rotary encoder 32 has a detector housing 34, and an input ⁇ 36 is rotatably supported on the detector housing 34 via bearings 38 and 40.
• the rear mo- ting-sing 18 is provided with a protective cover 31 surrounding the tillage detector 32.
• a cover 42 is attached to the rear of the detector housing 34.
• an image plate 44 is fixed to the rear part of the input member 36 in a coaxial state.
• the rotation angle of the rotating plate 44 is detected by detection units 46 and 48 which are schematically shown. This detected symbol is sent to a detection controller 50 schematically shown, and further sent out from the detection controller 50 by a not-shown symbol line.
• the detectors 48 and the detection controller 50 are fixed to the detector housing 34.
• the coupling device connects the output wheel 20 and the input shaft 36 with the same wheel prone.
• shaft coupling means 52 for firmly coupling and housing coupling means 54 for coupling the rear motor casing 18 of the motor housing 12 to the detector housing 34. I have.
• the coupling means 52 has a fastening bolt 56, the shaft fastening bolt 56 penetrates the center of the input shaft 36 in the direction ⁇ , and the tip is the rear end of the output shaft 20. It is screwed into the screw hole 58 formed in the part 30.
• a pair of male and female joints that are male and female fitted to each other are formed at the output shaft 20 and the input ⁇ 36 at the ⁇ portion.
• the pair of male and female joints comprises a frusto-conical shaped taper shaft portion 60 and a truncated cone shaped tapered hole portion 62 that fits the tapered shaft portion 60.
• the tapered portion 60 is formed at the rear end 30 of the output portion 20 in the same flat state, and the tapered hole portion 62 is formed coaxially at the front end of the input portion 36. Therefore, ⁇
• the fastening bolt 56 By screwing the fastening bolt 56 into the screw hole 58 of the output shaft 20, the output shaft 20 and the input shaft 3 are adjusted in a state where the tapered hole 60 and the tapered hole 62 are adapted. 6 can be firmly fastened.
• the housing coupling means 54 includes a flat plate spring 64 extending along a circle concentric with the output shaft 20 and the input shaft 36, and a plurality of housings. Ring fastening bolts 66. Both end faces of the flat spring 6 are arranged perpendicular to the axes of the output ⁇ 20 and the input ⁇ 36.
• the flat springs 6 4 are made from a spring leaf material such as a spring pot or the like.
• the plate spring 64 has a plurality of rigid bolt holes 68 through which the housing fastening bolts 66 are passed, and is provided at equal intervals in the circumferential direction. It is desirable that the inner diameter of the bolt hole 68 be slightly larger than the outer diameter of the housing fastening bolt 66. This increases the degree of freedom in positioning the rear motor casing 18 and the detector housing 34, making it easier to assemble the servomotor 10 with the tillage detector 32. become.
• Each of the rear motor casing 18 and the detector housing 34 has a plurality of screw holes (not shown), and the housing fastening bolts 66 each have a screw hole 7 4. And 76 can be screwed.
• Rear motor case The space between the housing 18 and the plate spring 6 4 and between the detector housing 3 and the plate spring 6 are connected to the housing bolts 66. 70 and 72 are interposed.
• the flat springs 6 4 allow a relative axial displacement between the rear housing 8 of the motor housing 12 and the detector housing 34 and also suppress a relative torsional displacement. It is fixed to the rear motor casing 18 and the posts 70 and 72 of the detector housing 34 by the housing fastening bolt 66.
• the rear mooring — the housing fastening bolt 66 screwed to the 18 side and the housing fastening bolt 66 hinged to the detector housing 34 side Are alternately inserted into the bolt holes 68 of the plate spring 64.
• Output shaft 20 and input shaft 36 are driven by servo motor 10
• the flat springs 6 4 are connected to the rear motor casing 18.
• the number of flat springs 6 4 may be one, but depending on the operating conditions,
• the number can be appropriately selected.
• the male and female joints are connected to the taper portion 60 and the taper.
• a taper ⁇ section is provided at input sensitivity 3 6 and a taper hole section is output 6 2
• the intended object of the present invention can be achieved even if it is constituted by the use of the blind hole.
• a boss may be formed at 34.
• the tillage detector is not limited to a rotary encoder, and may be, for example, a resolver, a working transformer, or the like.

Landscapes

• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Microelectronics & Electronic Packaging (AREA)
• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Transmission And Conversion Of Sensor Element Output (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=15014606

Family Applications (1)

Country Status (3)

Families Citing this family (12)

Citations (5)

Family Cites Families (5)

• 1982
  • 1982-07-27 JP JP57129644A patent/JPS5919809A/ja active Granted
• 1983
  • 1983-07-26 WO PCT/JP1983/000240 patent/WO1984000647A1/ja not_active Application Discontinuation
  • 1983-07-26 EP EP19830902294 patent/EP0115538A4/en not_active Withdrawn

Patent Citations (5)

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events