EP0635333A1 - Schleifgerät mit Oszillieren der Spindel - Google Patents

Schleifgerät mit Oszillieren der Spindel Download PDF

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Publication number
EP0635333A1
EP0635333A1 EP94630029A EP94630029A EP0635333A1 EP 0635333 A1 EP0635333 A1 EP 0635333A1 EP 94630029 A EP94630029 A EP 94630029A EP 94630029 A EP94630029 A EP 94630029A EP 0635333 A1 EP0635333 A1 EP 0635333A1
Authority
EP
European Patent Office
Prior art keywords
drum
motor
sander
oscillating spindle
current
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.)
Withdrawn
Application number
EP94630029A
Other languages
English (en)
French (fr)
Inventor
David Earl Beth
James Irvin Metzger, Jr.
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.)
Emerson Electric Co
Original Assignee
Emerson Electric Co
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 Emerson Electric Co filed Critical Emerson Electric Co
Publication of EP0635333A1 publication Critical patent/EP0635333A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/04—Headstocks; Working-spindles; Features relating thereto

Definitions

  • This invention relates to spindle or drum sanders and in particular to an oscillating spindle sander.
  • Spindle sanders include a rotating drum having a sanding surface to sand the edges of workpieces.
  • sanders have been designed which both oscillate and rotate the sanding drum.
  • motors typically output only rotational motion. They do not directly output translational motion which is needed to oscillate the sanding drum.
  • a series of pulleys, cylinders, or cams have been used.
  • the extra moving parts required by such a construction not only add to the cost and complexity of the sander, but increases the likelihood of a malfunction.
  • U.S. Patent 4,821,457 to Ianuzzi which uses a hydraulic cylinder having a pair of control switches to create vertical oscillation of the spindle.
  • One object of this invention is to provide an oscillating spindle sander in which a single motor directly drives the spindle both rotationally and translationally.
  • Another object is to provide such a sander which is made of a minimum number of parts, is easy to construct and maintain, and is economical to produce.
  • the invention provides an oscillating spindle sander in which the sander is directly driven both rotationally and translationally.
  • the sander includes a housing, a worktable for supporting a workpiece, a drum extending through the worktable and having a sanding surface, and a direct drive motor for directly transmitting rotational and reciprocal motion to the drum.
  • the motor includes a stator, a rotor, a first means for producing a first magnetic field for inducing rotational motion and a second means for producing a second magnetic field for inducing translational motion. By controlling the creation of the first and second magnetic fields, the motor will directly drive the drum both rotationally and translationally.
  • An oscillating spindle sander 1 includes a frame or stand 3 having a flat worktable 5.
  • Worktable 5 has a hole 7 formed in the center thereof to accommodate a sander drum 9 having an outer sanding surface.
  • drum 9 rotates and oscillates to sand the edges of a workpiece 11, shown in phantom in FIG. 1.
  • Drum 9 is mounted on a shaft 13 of a motor 15 to extend through hole 7.
  • Drum 9 is sized so that a sanding surface is always level with the top of the worktable when the sander is operated (e.g., there is no gap formed between the bottom of the drum and the top of the worktable).
  • Motor 15 directly drives shaft 13 both rotationally and translationally to directly induce both the oscillatory and rotational motion of drum 9.
  • Motor 15 which is shown in FIG. 4, is preferably the type of motor described in U.S. Patent 5,045,741, which is incorporated herein by reference.
  • Motor 15 has a shell 17 closed by a pair of endshields 19. Bearings 21 in endshields 19 rotationally support shaft 13.
  • Motor 15 includes a stator 23 having windings 25, which create a magnetic field, and a rotor 27 having an armature 29. Armature 29 is connected to a commutator 31 by two sets of brushes or contacts which create two separate magnetic fields in the rotor.
  • One of the rotor's magnetic fields is substantially perpendicular to the stator's magnetic field to rotate shaft 13 and the other is substantially parallel to the stator's magnetic field to provide axial movement of the shaft 13.
  • the commutator is operable to be connected to one or both of the sets of brushes to selectively rotate and/or oscillate the shaft 13 and hence the drum 9.
  • motor 15 is connected to a source of current by a circuit 33.
  • Circuit 33 has a pair of parallel wires 35 and 37 which are operably connected to the motor 15 to provide current thereto.
  • a rectifier 39 is placed in line 35 to convert AC current to DC current to rotate rotor 27, and an electronic control 41 is disposed in line 37 to control varying DC current or the cycle of AC current to control the translation of the shaft 13.
  • a switch 43 connects and disconnects the motor 15 to and from the source of current to turn the motor 15 on and off.
  • the foregoing provides a reciprocating and oscillating drum sander in which the drum is reciprocated and rotated directly by a single motor. This eliminates the need for second motors or complex cylinder, pulley, or cam systems which would otherwise be used to reciprocate the sander.
  • the foregoing disclosure is set forth for illustrative purposes only. Variations within the scope of the appended claims may be apparent to those skilled in the art.
EP94630029A 1993-07-19 1994-05-05 Schleifgerät mit Oszillieren der Spindel Withdrawn EP0635333A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US9327093A 1993-07-19 1993-07-19
US93270 1993-07-19

Publications (1)

Publication Number Publication Date
EP0635333A1 true EP0635333A1 (de) 1995-01-25

Family

ID=22238043

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94630029A Withdrawn EP0635333A1 (de) 1993-07-19 1994-05-05 Schleifgerät mit Oszillieren der Spindel

Country Status (3)

Country Link
EP (1) EP0635333A1 (de)
JP (1) JPH0732260A (de)
CA (1) CA2114818A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6569002B2 (en) 1999-12-10 2003-05-27 Porter-Cable/Delta Hand-held oscillating spindle sander
FR2886686A1 (fr) * 2005-06-06 2006-12-08 Peugeot Citroen Automobiles Sa Systeme de lancement d'un moteur thermique d'un vehicule automobile

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10208861B2 (en) 2014-05-20 2019-02-19 Nok Corporation Sealing device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2326270A1 (fr) * 1975-10-02 1977-04-29 Europ Propulsion Montage de broche porte-outil, notamment pour rectifieuse
DE3123199A1 (de) * 1981-06-11 1982-12-30 Michael Dipl.-Phys. 8024 Deisenhofen Mohrenstein-Ertel Einrichtung und verfahren zum schnellen axialen hin- und herbewegen einer spindel
JPS60259376A (ja) * 1984-06-06 1985-12-21 Makino Milling Mach Co Ltd 軸方向往復運動研摩装置
US4821457A (en) * 1988-03-21 1989-04-18 Ianuzzi Joseph N Vertical oscillating spindle sanders
JPH01240266A (ja) * 1988-03-17 1989-09-25 Seiko Seiki Co Ltd 研削盤
US5045741A (en) * 1990-02-23 1991-09-03 Battelle Memorial Institute Dual-motion apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2326270A1 (fr) * 1975-10-02 1977-04-29 Europ Propulsion Montage de broche porte-outil, notamment pour rectifieuse
DE3123199A1 (de) * 1981-06-11 1982-12-30 Michael Dipl.-Phys. 8024 Deisenhofen Mohrenstein-Ertel Einrichtung und verfahren zum schnellen axialen hin- und herbewegen einer spindel
JPS60259376A (ja) * 1984-06-06 1985-12-21 Makino Milling Mach Co Ltd 軸方向往復運動研摩装置
JPH01240266A (ja) * 1988-03-17 1989-09-25 Seiko Seiki Co Ltd 研削盤
US4821457A (en) * 1988-03-21 1989-04-18 Ianuzzi Joseph N Vertical oscillating spindle sanders
US5045741A (en) * 1990-02-23 1991-09-03 Battelle Memorial Institute Dual-motion apparatus

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 10, no. 134 (M - 479)<2191> 17 May 1986 (1986-05-17) *
PATENT ABSTRACTS OF JAPAN vol. 13, no. 573 (M - 909) 19 December 1989 (1989-12-19) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6569002B2 (en) 1999-12-10 2003-05-27 Porter-Cable/Delta Hand-held oscillating spindle sander
FR2886686A1 (fr) * 2005-06-06 2006-12-08 Peugeot Citroen Automobiles Sa Systeme de lancement d'un moteur thermique d'un vehicule automobile

Also Published As

Publication number Publication date
CA2114818A1 (en) 1995-01-20
JPH0732260A (ja) 1995-02-03

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