US3791259A - Stylus for copy milling - Google Patents

Stylus for copy milling Download PDF

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Publication number
US3791259A
US3791259A US00181764A US3791259DA US3791259A US 3791259 A US3791259 A US 3791259A US 00181764 A US00181764 A US 00181764A US 3791259D A US3791259D A US 3791259DA US 3791259 A US3791259 A US 3791259A
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US
United States
Prior art keywords
stylus
axis
axes
tip
engaging surface
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
US00181764A
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English (en)
Inventor
F Rossberger
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.)
Friedrich Deckel AG
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Friedrich Deckel AG
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Filing date
Publication date
Application filed by Friedrich Deckel AG filed Critical Friedrich Deckel AG
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    • 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
    • B23Q35/00—Control systems or devices for copying directly from a pattern or a master model; Devices for use in copying manually
    • B23Q35/04—Control systems or devices for copying directly from a pattern or a master model; Devices for use in copying manually using a feeler or the like travelling along the outline of the pattern, model or drawing; Feelers, patterns, or models therefor
    • B23Q35/08—Means for transforming movement of the feeler or the like into feed movement of tool or work
    • B23Q35/20—Means for transforming movement of the feeler or the like into feed movement of tool or work with special means for varying the ratio of reproduction
    • 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
    • B23Q35/00—Control systems or devices for copying directly from a pattern or a master model; Devices for use in copying manually
    • B23Q35/04—Control systems or devices for copying directly from a pattern or a master model; Devices for use in copying manually using a feeler or the like travelling along the outline of the pattern, model or drawing; Feelers, patterns, or models therefor
    • B23Q35/24—Feelers; Feeler units
    • B23Q35/26—Feelers; Feeler units designed for a physical contact with a pattern or a model
    • 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
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/303416—Templet, tracer, or cutter
    • Y10T409/303472—Tracer

Definitions

  • TRACT A stylus for use in copy milling at different transfer ratios in difierent axes.
  • the apparatus aspects of the invention comprises a sensing stylus having an elliptical cross section and/or an elliptical tip in which the elliptical section is generated as a semi-rotational or half of an ellipsoid wherein the dimensions of major and minor axes of such ellipse are derived as the product of the diameter of the tool multiplied by the inverse value of the transfer ratio in the respective axes of the tracing directions.
  • the invention relates to a tracer pin for copying, particularly by copy milling, in which an original piece, a
  • model, a template or the like is traced by means of the tracer pin and in which different transfer ratios can be chosen in different axes by adjusting the transfer element or elements and, as a rule, by also adjusting a further transfer element which is superposed to at least one of said transfer elements. This latter occurs, for example, during the expansion or reduction operations in so-called roller engraving by adjusting a pantograph and the gear transfer ratio of a roller drive.
  • Methods for copying with transfer ratios which vary in different directions serve to create two or threedimensional forms which are, compared with the original form or the original piece, expanded or reduced in at least one of their several dimensions.
  • a situation for the use of such a method occurs, for example, in the manufacture of china the design of a soup plate or a long round meat plate is to be copied from a substantially circular flat dinner plate.
  • Other cases will be ap parent in which a higher level of accuracy is required than in the above example.
  • the dimensions of the tracer pin and the mill are chosen to be of equal ratios whereby said tracer pin has a circular cross section and a primarily semi-spherical tip.
  • this method can, in the case of transfer ratios which differ in two axes, be used only for line engraving.
  • the disadvantages are in such case not very important because the line engraving works with tracer pins and mills of a pointed or conical design and the depth and also the width of the engraving is adjusted by the feeding the tool to the workpiece.
  • the basic purpose of the invention is to produce a tracing pin for copying, particularly for copy milling, in which an original piece, a model, a template or the like is traced by means of the tracer pin or stylus, and in which in various axes different transfer ratios can be chosen, through which there can be obtained a reproduction of the original piece, which reproduction is of correct size, according to the selected transfer ratios in the respective axes and which is characterized by minimum expense.
  • tracing pin for copying, particularly for copy-milling, an original piece, a model, a template or the like, is traced by means of a stylus and in different axes different transfer ratios can be chosen by adjusting the transfer element or the respective transfer elements and, as a rule, a further transfer element which is superposed to at least one of said first mentioned transfer elements.
  • the inventive attainment of the purpose consists in utilizing a tracer pin with an elliptical cross section and/or an elliptical tip in form of a semirotation ellipsoid in which the dimensions of the major and minor axes of the ellipse correspond to the product of the diameter of the tool multiplied with the inverse value of the transfer ratios in the respective axes of the tracing directions.
  • the tracer pin is provided according to the invention which has a cross section in form of an ellipse.
  • the dimension of said ellipse corresponds in the major and the minor axes or the reversal thereof to the product of the diameter of the tool multiplied with the inverse value of the transfer ratio in the xor the y-axes.
  • the tracer pin has, according to the invention, in addition to the feature described in the preceding paragraph, a tip in the form of a semirotation ellipsoid, the axis of rotation of which is positioned perpendicularly to the two axes with equal transfer ratio.
  • the tracer pin according to the invention at a conventional circular surfacelike cross section of the shaft has a tip in form of a seimirotation ellipsoid, the axis of rotation of which is coaxial, or approximately so, to the axis of the tracer pin and the major axis of which during reduction or its minor axis during expansion is positioned on the axis of rotation.
  • the tracer pin is provided on its periphery in the major or, if necessary, in the minor axis with a setting or adjusting means, like an arbor, a cam, a slot, plane surfaces, a mark or the like.
  • a setting or adjusting means like an arbor, a cam, a slot, plane surfaces, a mark or the like.
  • FIG. 1 is a schematized top view of a model with a tracer pin and, corresponding thereto, of a workpiece with a tool
  • FIG. 2 is a schematized top view of a different model with a tracer pin and, corresponding thereto, ofa workpiece with a tool
  • FIGS. 1 or 2 illustrate the inner contour 13, 14 of an original piece, here a template 11,12, and the already copied inner contour 23,24 of a workpiece 21,22.
  • a tracer pin, or stylus, 31,32 and a tool 41,42 are connected by means of a symbolically illustrated transfer system 5 which consists of conventional transfer elements with transfer ratios which can be differently adjusted in different axes so that through the movement of the tracer pin 31,32 along the inner contour 13,14 of the template 11,12, at transfer ratios which differ in different axes, the movement of the tool 41,42, here a mill, is controlled in the workpiece for producing the inner contour 23,24.
  • the path of movement of the tracer pin 31,32 is indicated with a dash-dotted line a" and the path of movement of the tool 41,42 with a dash-dotted line b."
  • the tracer point 31,32 has a cross section in form of an ellipsoid, the dimensions n r and n of which in the x-axis and in the y-axis, the major or the minor axis or the reversal thereof, corresponds to the product of the diameter d of the tool 41,42 multiplied with the inverse value of the transfer ratio in FIG. 1 of 1:4 in the x-axis and 1:2 in the y-axis in FIG. 2 of 4:1 in the x-axis and 2:1 in the y-axis.
  • the radial facing side a tracer pin 5 has a cross section Q in the form of an ellipse, the dimensions of which correspond in the xand in the yaxis to the product of the diameter ofa tool used multiplied with the inverse value of the chosen transfer ratio in the xor in the y-axis.
  • a tracer pin is used for performing the duplicating method at transfer ratios which differ in two axes, here the xand the y-axis, which are positioned perpendicularly or approximately perpendicularly to the axis of the tracer pin. It is also effective for roughing, and in all cases in which a tool, as a mill, is used having its front face positioned perpendicularly to its axis.
  • the radial facing side of a tracer pin 6 or 7 has, aside from a construction like the tracer pin 5, a tip 61, 71 in form of a semirotation 6 to FIG. 4, in the yand the z-axis and according to FIG. 5 in the xand the z-axis.
  • Tracer pins of this type are used for performing the duplicating method at transfer ratios which differ in two axes as a rule the xand the y-axis which are positioned perpendicularly or approximately perpendicularly to the axis of the tracer pin.
  • Such tracer pins will also perform the duplicating method at a transfer ratio which equals one of said transfer ratios in the axis which corresponds to, or approximately corresponds to the axis of the tracer pin as a rule the z-axis.
  • the tracer pin 8,9 at a conventional circular-surfacelike cross section Q of the shaft has a tip 81 or 91 in form of a semirotation or half of an ellipsoid, the axis of rotation m of which is coaxial or approximately so to the major axis p of the tracer pin during reduction or to the minor axis q during expansion.
  • Tracer pins of this construction must be used for performing the duplicating method at transfer ratios which are equal in two axes as a rule the xand the y-axis which are positioned perpendicularly or approximately perpendicularly to the axis of the tracer pin, and a transfer ratio which differs from said transfer ratios in the axis as a rule the z-axis which corresponds or is approximate to the axis of the tracer pin.
  • a stylus for use in copy milling apparatus having a guide template engagable by said stylus, a milling tool of a first diameter and a transfer mechanism for conveying the movement of said stylus having direction components along at least two mutually perpendicular axes to said tool through differing transfer ratios existing between each axis of said two axes of movement, comprising:
  • said elongated body defining an elliptical guide template engaging surface, the dimension of a major axis and a minor axis of said elliptical template engaging surface being equal to said first diameter of said tool multiplied by the inverse of the respective transfer ratio of said transfer mechanism between said stylus and said tool along each of said two axes of movement.
  • said tip means is composed of at least half of an ellipsoid, said major axis of which is coaxial with the axis of said elongated body means.
  • said tip means is composed of a flat surface the plane of which is perpendicular to the longitudinal axis of said body.
  • cal template engaging surface means on said tip means is half of an ellipsoid.
  • a stylus according to claim 8 wherein said half of said ellipsoid is defined by a cutting plane containing said minor axis at the midpoint of said major axis.
  • a stylus according to claim 8 wherein said half of said ellipsoid is defined by a cutting plane containing said major axis at the midpoint of said minor axis.

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  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Machine Tool Copy Controls (AREA)
  • Milling Processes (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)
US00181764A 1970-09-25 1971-09-20 Stylus for copy milling Expired - Lifetime US3791259A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2047381A DE2047381C3 (de) 1970-09-25 1970-09-25 Taststift für eine zwei- oder dreidimensionale Kopiereinrichtung

Publications (1)

Publication Number Publication Date
US3791259A true US3791259A (en) 1974-02-12

Family

ID=5783446

Family Applications (1)

Application Number Title Priority Date Filing Date
US00181764A Expired - Lifetime US3791259A (en) 1970-09-25 1971-09-20 Stylus for copy milling

Country Status (7)

Country Link
US (1) US3791259A (de)
AT (1) AT302769B (de)
CH (1) CH553031A (de)
DE (1) DE2047381C3 (de)
FR (1) FR2107962B1 (de)
GB (1) GB1329356A (de)
IT (1) IT939450B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007045734A1 (fr) * 2005-10-20 2007-04-26 Briot International Appareil de palpage d'une monture de lunettes et machine de meulage associee

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US816700A (en) * 1900-10-13 1906-04-03 Linotype Machinery Ltd Tracer and tool for engraving-machines.
US3640182A (en) * 1969-10-08 1972-02-08 Thomas D Vertin Method and means for making master models

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US816700A (en) * 1900-10-13 1906-04-03 Linotype Machinery Ltd Tracer and tool for engraving-machines.
US3640182A (en) * 1969-10-08 1972-02-08 Thomas D Vertin Method and means for making master models

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007045734A1 (fr) * 2005-10-20 2007-04-26 Briot International Appareil de palpage d'une monture de lunettes et machine de meulage associee
FR2892332A1 (fr) * 2005-10-20 2007-04-27 Briot Internat Sa Appareil de palpage d'une monture de lunettes et machine de meulage associee

Also Published As

Publication number Publication date
DE2047381B2 (de) 1973-09-27
DE2047381A1 (de) 1972-03-30
GB1329356A (en) 1973-09-05
FR2107962B1 (de) 1974-03-15
AT302769B (de) 1972-10-25
CH553031A (de) 1974-08-30
DE2047381C3 (de) 1974-04-18
IT939450B (it) 1973-02-10
FR2107962A1 (de) 1972-05-12

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