GB1331931A - Method of and apparatus for checking the form of a concave surface - Google Patents

Method of and apparatus for checking the form of a concave surface

Info

Publication number
GB1331931A
GB1331931A GB1331931DA GB1331931A GB 1331931 A GB1331931 A GB 1331931A GB 1331931D A GB1331931D A GB 1331931DA GB 1331931 A GB1331931 A GB 1331931A
Authority
GB
United Kingdom
Prior art keywords
plunger
axis
slipper
switch
ball
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
Application number
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.)
ZF International UK Ltd
Original Assignee
Lucas Industries Ltd
Joseph Lucas Industries 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 Lucas Industries Ltd, Joseph Lucas Industries Ltd filed Critical Lucas Industries Ltd
Publication of GB1331931A publication Critical patent/GB1331931A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/20Measuring arrangements characterised by the use of mechanical techniques for measuring contours or curvatures

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)

Abstract

1331931 Testing surface shape JOSEPH LUCAS (INDUSTRIES) Ltd 13 Oct 1970 [22 July 1969] 36802/69 Heading G1M An apparatus for testing the shape of a concave surface comprises a ball ended member 20, a mounting 35 for holding a test piece, a device 23 sensitive to linear displacement extending within the member so as to be engageable in use with a point on the concave surface, means for rotating the mounting about an axis thereof and means for rotating this axis about an axis of the said ball. As described a piston slipper under test is placed in cup 35 of plunger assembly 32. Spring 36 urges the piston slipper into making contact with ball 21 and into contact with the end of plunger 23 of a probe 75 sensitive to axial displacement of the plunger. The output of probe 75 is displayed on a recorder 76. Switch 62 is closed, then switch 61 is pressed to operate the motor to rotate shaft 39 and thus via gear train 40, 29, 30, 31, 34 to rotate the slipper to a desired position, when switch 61 is released. Plunger 52 is pushed in against spring 54 and turned so that peg 55 engages a step in recess 56 to retain the plunger. This action causes the plunger to move member 49 transversely to the axis of sleeve 24, and shaft 39, engaging wedgeshaped member 48, moving it axially of shafts 24, 39 and sliding clutch member 43 on splines 44 against the force of spring 45 into contact with a second clutch member 42. Sleeve 24 and shaft 39 then rotate together and the slipper rotates about the axis of spindle 33 and the axis of sleeve 24 and 39. After a predetermined degree of rotation of shaft 24, the end of a recess 47 in collar 46 engages the peg 55 to disengage it from the step in recess 56, when the plunger moves outwardly under the influence of spring 54 and switches off via switch 77 the motor and via switch 59 the recorder 76. If the surface of the slipper corresponds exactly to the wating end of ball 21 the trace on recorder 76 will be a straight line. For other forms of mating surface, the trace will be characteristic of the surface, to be compared against a reference standard.
GB1331931D 1969-07-22 1969-07-22 Method of and apparatus for checking the form of a concave surface Expired GB1331931A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3680269 1969-07-22

Publications (1)

Publication Number Publication Date
GB1331931A true GB1331931A (en) 1973-09-26

Family

ID=10391284

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1331931D Expired GB1331931A (en) 1969-07-22 1969-07-22 Method of and apparatus for checking the form of a concave surface

Country Status (1)

Country Link
GB (1) GB1331931A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2429410A1 (en) * 1978-06-20 1980-01-18 Renault Measuring roughness of concave or convex working surface - using push-rod in V-block with adjacent template and probe sensing irregularities
WO2017014652A1 (en) 2015-07-22 2017-01-26 The White Sc Sp. Z.O.O. Device for measuring

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2429410A1 (en) * 1978-06-20 1980-01-18 Renault Measuring roughness of concave or convex working surface - using push-rod in V-block with adjacent template and probe sensing irregularities
WO2017014652A1 (en) 2015-07-22 2017-01-26 The White Sc Sp. Z.O.O. Device for measuring

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees