US3475973A - Apparatus for analyzing rotary motion - Google Patents

Apparatus for analyzing rotary motion Download PDF

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Publication number
US3475973A
US3475973A US720737A US3475973DA US3475973A US 3475973 A US3475973 A US 3475973A US 720737 A US720737 A US 720737A US 3475973D A US3475973D A US 3475973DA US 3475973 A US3475973 A US 3475973A
Authority
US
United States
Prior art keywords
rotary motion
path
pin
axis
engaging
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 - Lifetime
Application number
US720737A
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English (en)
Inventor
Otta Blazek
Milon Herynk
Josef Rybar
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.)
Skoda np
Original Assignee
Skoda np
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Filing date
Publication date
Application filed by Skoda np filed Critical Skoda np
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Publication of US3475973A publication Critical patent/US3475973A/en
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    • 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
    • F16H21/00—Gearings comprising primarily only links or levers, with or without slides
    • F16H21/10—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane
    • F16H21/16—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane for interconverting rotary motion and reciprocating motion
    • F16H21/18—Crank gearings; Eccentric gearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/25—Movable or adjustable work or tool supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/25—Movable or adjustable work or tool supports
    • B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
    • B23Q1/50—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism
    • B23Q1/52—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism a single rotating pair
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/25—Movable or adjustable work or tool supports
    • B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
    • B23Q1/56—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism
    • B23Q1/58—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism a single sliding pair
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/25—Movable or adjustable work or tool supports
    • B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
    • B23Q1/56—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism
    • B23Q1/60—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism two sliding pairs only, the sliding pairs being the first two elements of the mechanism
    • B23Q1/62—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism two sliding pairs only, the sliding pairs being the first two elements of the mechanism with perpendicular axes, e.g. cross-slides
    • B23Q1/621—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism two sliding pairs only, the sliding pairs being the first two elements of the mechanism with perpendicular axes, e.g. cross-slides a single sliding pair followed perpendicularly by a single sliding pair
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18056—Rotary to or from reciprocating or oscillating
    • Y10T74/18088—Rack and pinion type

Definitions

  • This invention relates to the analysis of rotary motion in terms of Cartesian coordinates, and particularly to apparatus for generating signals indicative of the position of a body moving in an arcuate path relative to a system of Cartesian coordinates.
  • the apparatus of the invention may consist mainly of two guides which define respective rectilinear paths extending in the direction of the desired Cartesian coordinates which are transverse of the axis of rotation of the body to be analyzed and transverse of each other.
  • Actuator members respectively guided in these paths carry fixedly fastened engaging elements each of which engages the same eccentric coupling member on the rotating body in such a manner that the engaging element moves with the coupling member in the direction of the path of the associated actuator member while permitting the coupling member to move freely relative to the engaging element in the direction of the path of the other actuator member.
  • the actuator members each operate a signal generator which produces a signal in response to the position of the connected actuator member in the path thereof.
  • the body 1 whose rotary motion is to be analyzed is a crankshaft 1, not shown in detail, on which an eccentric,
  • cylindrical coupling pin 2 is attached by means of a radial arm 21.
  • Two elongated arms 3, 4 are attached at right angles to elongated slides 5, 6 respectively which are guided on respective guide bars 7, 8 in rectilinear paths perpendicular to each other and perpendicular to the axis of rotation of the shaft 1.
  • the guide bars 7, 8 are fixed elements of a supporting frame of the machine, not otherwise shown, in which the shaft 1 is journaled in a nonillustrated conventional manner.
  • the arms 3, 4 have respective longitudinal slots 31, 41 whose longitudinal walls are spaced apart approximately by the diameter of the pin 2.
  • the pin 2 is simultaneously received in both slots 31, 41 in abutting engagement with the faces of the longitudinal walls, the arms 3, 4 being superimposed in the direction of the axis of the shaft 1.
  • Racks 9, 10 respectively cut into longitudinal faces of the slides 5, 6 mesh with pinions 13, 14 respectively mounted on the input shafts 15, 16 of two selsyns 11, 12 fixedly arranged on the stationary support structure for converting the rectilinear movement of the slides 5, 6 into angular movement of the shafts 15, 16.
  • the arm 4 on the slide 5 is moved toward the left, as viewed in the drawing, by the pin 2, and the input shaft 15 of the selsyn 11 is moved counterclockwise.
  • the free longitudinal movement of the pin 2 in the slot 41 does not affect the position of the selsyn 11.
  • the output signals of the selsyns 11, 12 are amplified in a conventional manner and fed to two servomotors in the aforementioned milling machine which shift the milling cutter along respective paths perpendicular to each other. If the two servomechanisms are identical, the milling head is moved thereby in a circle in synchronization with the circular movement performed by the pin 2 during rotation of the shaft 1.
  • the apparatus illustrated may readily be modified to analyze the rotary motion of the shaft 1 in terms of oblique Cartesian coordinates if the two rectilinear movements of the milling machine head are obliquely inclined relative to each other.
  • Servomechanisms of the type specifically described above permit the output signals generated by the selsyns 11, 12 in response to the positions of the actuating slides 5, 6 to be modified in a simple manner by conventional electronic controls on the associated amplifiers, and electronic or electrical signal generators are therefore preferred.
  • the slides 5, 6 may be employed in an obvious manner for actuating mechanical, hydraulic, or pneumatic signal generators in an obvious manner to produce signals indicative of the position of the pin 2 in Cartesian coordinates.
  • engaging means fixedly fastened to each of said actuator members and engaging said coupling member for movement of the engaging means with said coupling member in the direction of the path of the associated actuator member while permitting said coupling member to move freely relative to said engaging means in the direction of the path of the other actuator member;
  • said engaging means each having two abutment faces oppositely spaced in the direction of said path of the associated actuator member and extending in the direction of said path of the other actuator member, the spacing of said faces being substantially equal to the dimension of said coupling member in the last-mentioned direction, the coupling member being received between said faces.
  • each engaging means including an engaging member formed with an opening elongated in the direction of said path of the other actuator member, said faces extending in said openmg.
  • motion transmitting means interposed between each actuator member and the associated signal generating means for converting the rectilinear movement of said actuator member into angular movement of said signal generating means, the signal generating means including an angularly movable input member connected to said motion transmitting means for operation thereby.
  • said motion transmitting means including a rack on said actuator member, and said input member carrying a pinion meshing with said rack.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Milling Processes (AREA)
  • Transmission Devices (AREA)
US720737A 1967-04-11 1968-04-11 Apparatus for analyzing rotary motion Expired - Lifetime US3475973A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS262267 1967-04-11

Publications (1)

Publication Number Publication Date
US3475973A true US3475973A (en) 1969-11-04

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ID=5363874

Family Applications (1)

Application Number Title Priority Date Filing Date
US720737A Expired - Lifetime US3475973A (en) 1967-04-11 1968-04-11 Apparatus for analyzing rotary motion

Country Status (9)

Country Link
US (1) US3475973A (en:Method)
AT (1) AT286069B (en:Method)
BE (1) BE712109A (en:Method)
CH (1) CH477261A (en:Method)
DE (1) DE1627118A1 (en:Method)
FR (1) FR1570653A (en:Method)
GB (1) GB1204241A (en:Method)
NL (1) NL6803961A (en:Method)
SE (1) SE335270B (en:Method)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3696682A (en) * 1969-12-18 1972-10-10 Establissements Pain Bourgeas Reciprocal drive mechanism
US3763712A (en) * 1972-02-08 1973-10-09 N Smiley Instrument control linkage
US3802410A (en) * 1972-07-18 1974-04-09 J Palma Archery bow with variable bowlimb tensioning devices
US3813953A (en) * 1972-12-27 1974-06-04 Burroughs Corp Linear to linear motion apparatus including a bidirectional spring clutch having means to inhibit automatic shifting
US3827309A (en) * 1973-03-14 1974-08-06 R Dooley Manipulating mechanism
US20030102724A1 (en) * 2001-11-02 2003-06-05 Roy Shambhu N. Single motor, multi-axis stage
US20090236453A1 (en) * 2005-02-25 2009-09-24 Click Clack Limited Drive Mechanism
US20160202058A1 (en) * 2015-01-13 2016-07-14 Kabushiki Kaisha Topcon Surveying instrument

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL142582B1 (en) * 1984-06-08 1987-11-30 Politechnika Warszawska Device for carrying out tool displacement relative to polar coordinates
FR2610229A1 (fr) * 1987-02-04 1988-08-05 Gieres Sarl Chaudronnerie Structure de tronconneuse a scie annulaire pour le sciage de tubes, repondant aux lois de l'isostatisme

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US405636A (en) * 1889-06-18 Straight-knitting machine
FR925793A (fr) * 1945-06-02 1947-09-12 Rigide Dispositif pour la commande de déplacements limités d'organes de machines
US2859628A (en) * 1957-04-30 1958-11-11 Teletype Corp Variable clearance rack and pinion device
US2991663A (en) * 1958-11-26 1961-07-11 John B Mchugh "z" axis drive system
US3220276A (en) * 1964-02-10 1965-11-30 Cincinnati Milling Machine Co Position analog unit for automatic controls

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US405636A (en) * 1889-06-18 Straight-knitting machine
FR925793A (fr) * 1945-06-02 1947-09-12 Rigide Dispositif pour la commande de déplacements limités d'organes de machines
US2859628A (en) * 1957-04-30 1958-11-11 Teletype Corp Variable clearance rack and pinion device
US2991663A (en) * 1958-11-26 1961-07-11 John B Mchugh "z" axis drive system
US3220276A (en) * 1964-02-10 1965-11-30 Cincinnati Milling Machine Co Position analog unit for automatic controls

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3696682A (en) * 1969-12-18 1972-10-10 Establissements Pain Bourgeas Reciprocal drive mechanism
US3763712A (en) * 1972-02-08 1973-10-09 N Smiley Instrument control linkage
US3802410A (en) * 1972-07-18 1974-04-09 J Palma Archery bow with variable bowlimb tensioning devices
US3813953A (en) * 1972-12-27 1974-06-04 Burroughs Corp Linear to linear motion apparatus including a bidirectional spring clutch having means to inhibit automatic shifting
US3827309A (en) * 1973-03-14 1974-08-06 R Dooley Manipulating mechanism
US20030102724A1 (en) * 2001-11-02 2003-06-05 Roy Shambhu N. Single motor, multi-axis stage
US6740998B2 (en) * 2001-11-02 2004-05-25 Advantest Corporation Single motor, multi-axis stage
US20090236453A1 (en) * 2005-02-25 2009-09-24 Click Clack Limited Drive Mechanism
US20160202058A1 (en) * 2015-01-13 2016-07-14 Kabushiki Kaisha Topcon Surveying instrument
US10690497B2 (en) * 2015-01-13 2020-06-23 Kabushiki Kaisha Topcon Surveying instrument including a reflective prism mounted on a movable part

Also Published As

Publication number Publication date
FR1570653A (en:Method) 1969-06-13
AT286069B (de) 1970-11-25
GB1204241A (en) 1970-09-03
SE335270B (en:Method) 1971-05-17
CH477261A (de) 1969-08-31
NL6803961A (en:Method) 1968-10-14
BE712109A (en:Method) 1968-07-15
DE1627118A1 (de) 1971-07-08

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