US2973528A - Control system for the transverse reciprocating movement of a tool-holder carriage for thread-cutting machines - Google Patents

Control system for the transverse reciprocating movement of a tool-holder carriage for thread-cutting machines Download PDF

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Publication number
US2973528A
US2973528A US781294A US78129458A US2973528A US 2973528 A US2973528 A US 2973528A US 781294 A US781294 A US 781294A US 78129458 A US78129458 A US 78129458A US 2973528 A US2973528 A US 2973528A
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US
United States
Prior art keywords
carriage
tool
cam
transverse
saddle
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
US781294A
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English (en)
Inventor
Renoux Pierre Edouard
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.)
Cri Dan SA
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Cri Dan SA
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 Cri Dan SA filed Critical Cri Dan SA
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Publication of US2973528A publication Critical patent/US2973528A/en
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Classifications

    • 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
    • B23Q1/64—Movable or adjustable work or tool supports characterised by the purpose of the movement
    • B23Q1/68—Movable or adjustable work or tool supports characterised by the purpose of the movement for withdrawing tool or work during reverse movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
    • B23G1/00—Thread cutting; Automatic machines specially designed therefor
    • B23G1/02—Thread cutting; Automatic machines specially designed therefor on an external or internal cylindrical or conical surface, e.g. on recesses
    • B23G1/04—Machines with one working-spindle
    • 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
    • Y10T74/18288—Cam and lever
    • 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
    • Y10T74/18296—Cam and slide
    • 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
    • Y10T74/19—Gearing
    • Y10T74/19642—Directly cooperating gears
    • Y10T74/1967—Rack and pinion
    • 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
    • Y10T82/00—Turning
    • Y10T82/15—Tapers
    • Y10T82/154—Transversely shifted cutter
    • Y10T82/158—Gear controlled
    • 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
    • Y10T82/00—Turning
    • Y10T82/20—Lathe for screw cutting
    • 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
    • Y10T82/00—Turning
    • Y10T82/25—Lathe
    • Y10T82/2531—Carriage feed

Definitions

  • annular rocking cam is fitted round the above-mentioned adjustable eccentric cam while a roller or shoe pivotally secured to the end of a sliding stern engages said annular cam, and the other rack-shaped end of said sliding stem meshes with corresponding teeth on a rotary and sliding shaft.
  • Said shaft is provided with further teeth meshing with the rack-shaped section of a pusher member acting on the transverse carriage of the machine, through the agency of a shoe against which the above-mentioned carriage is urged by springs.
  • the actual location of the rotary and sliding shaft may be modified as desired through adjusting means, including for instance a micrometric thrust-exerting screw provided with a-scale-carrying drum and a return spring urging the sliding shaft into contacting relationship with said micrometric screw.
  • the released position of the tool may be adjusted by a limitation of the amplitude of the receding movement of the transverse carriage under the action of its return spring through the agency for instance of a further micrometric screw provided with a scale-carrying drum engaging the rear end of the pusher member actuating the transverse carriage.
  • Fig. 1 is an elevational partial cross-sectional view of the saddle and of the carriages of a thread-cutting machine.
  • Fig. 2 is a cross-section through line 11-11 of Fig. 1.
  • Fig. 3 is a partial sectional view similar to Fig. 2, but showing the annular rocking cam in a second position.
  • Figs. 4 and 5 are two partial views in two different positions of a modification of the annular rocking cam together with the means transmitting movement between said cam and the transverse carriage.
  • 1 designates the conventional saddle of a thread-cutting machine of which 2 designates the longitudinal carriage sliding freely over the saddle, while 3 designates the transversely movable carriage serving as a support for the tool-holder 4.
  • the 'invention' resorts to the following mechanism for obtaining the transverse movementof the carriage 2 for engagement and release of the operative tool 5.
  • a connecting rod 10 controlled by a lever 11 pivotably secured at 12 to said connecting rod and pivoting round a stationary stud 13.
  • Said lever 11 carries on its lower arm subjected to the action of a return spring 14, a roller 15 which is in contact with the outline of a cam 16' carried by the shaft 17 which also carries a further card which is not illustrated and over which runs a roller producing the reciprocation of the longitudinal carriage of the thread-cutting machine:
  • These'arrangements of an eccentric cam such as 7 and of ashaft such as 17 positioned in the saddle 1 of the machine and carrying the cam controlling the movements of the longitudinalcarriage are known per se and they may be provided in accordance with the disclosure in said US. Patent :No. 2,709,924. They are therefore not claimed in the present application.
  • the bearing surface between the rocking cam '6. and the eccentric cam 7 is constituted by the entire peripheral surface of the latter.
  • the transmission of movement to the transverse carriage 3 is ensured through the rocking cam 6 by a broad cylindrical roller 18, freely revoluble at the outer end of a sliding rod 19, the upper end of which has a rack shape, as shown at 20.
  • the rack 20 thus provided meshes with a pinion having cooperating teeth 21 and which is fixedly connected to a shaft 22 adapted to rotate and to move translationally in an entirely free manner inside the saddle.
  • the shaft. carries a further series .of peripheral teeth 26 meshing with a further racl; 27 fixedly connected to a pusher member 28 adapted toslide and to urge into movement through the agency of the oscillating shoe 3-1 the transverse carriage 3 which is urged against said shoe 31 by springs which are not illustrated.
  • the shaft 22 which is slideably carried in a corresponding recess of the saddle 1 is held axially by a spring 23- is contacting relationship with a micrometric screw 24 carried by the saddle 1 and provided with a scale-carrying drum 25 which permits 'defining the position of the screw 24 and shaft 22.
  • the teeth 21 and 26-carried by the shaft 22 are given different slopes and it is obvious that any axial shifting of the shaft 22 leads to a rotation of said shaft and, consequently, to a relative movement of the pusher member 28.
  • the shifting of the pusher member 28 is in its turn transmitted to the transverse carriage 3 and to the thread-cutting tool 5, whereby it is apparent that it is possible to adjust the diameter of the thread through the agency of the scale-carrying drum 25.
  • the rearmost location of the transverse carriage 3 may be adjusted through a micrometric screw 29 (Fig. 2) carried bythe saddle 1 and provided with a scale-carrying drum 30 through which the location of the screw and rearmost position of the carriage 3 may be defined.
  • a thread-cutting machine including a saddle, a longitudinal carriage adapted to slide longitudinally'on said saddle and a tool-holder carriage adapted to assume a'reciprocating transverse movement over said longitudinal carriage, the provision of means controlling the transverse reciprocating movement of said tool-holder carriage and comprising an eccentric cam carried by the saddle and adapted to revolve round ahorizontal axis, an annular cam fitted round the periphery of said eccentric cam, means for imparting to said annular cam a rocking movement round the eccentric cam, a vertical rod adapted to slide vertically inside the saddleya hearing member carried at the lower end of said rod and engaging said annular cam, teethrigid with the upper end of said rod and-forming a vertical rack, a shaft adapted to revolve freely inside the saddle and extending perpendicularly to the direction of transverse movementof the tool-holder carriage, two series of peripheral teeth rigid with said shaft and of which one.
  • a thread-cutting machine including a saddle, a longitudinal carriage adapted to slide longitudinally on said saddle and a tool-holder carriage adapted to assume a reciprocating transverse movement over said longitudinal carriage, the provision of means controlling the transverse reciprocating movement of said tool-holder carriage and comprising an eccentric cam carried by the saddle and adapted to revolve round a horizontal axis, an annular cam fitted round the periphery of said eccentric cam, means for imparting to said annular cam a rocking movement round the eccentric cam, a vertical rod adapted to slide vertically inside the saddle, a hearing member carried at the lower end of said rod and engaging said annular cam, teeth rigid with the upper end of said rod and forming a vertical rack, a shaft adapted to revolve freely inside the saddle and extending perpendicularly to the direction of transverse movement of the tool-holder carriage, two series of peripheral teeth rigid with said shaft and of which one meshes with the vertical rack, a member adapted to slide longitudinally inside the saddle in a direction parallel with said direction of transverse movement and including
  • a thread-cutting machine including a saddle, a longitudinal carriage adapted to slide longitudinally on said saddle and a tool-holder carriage adapted to assume a reciprocating transverse movement over said longitudinal carriage, the provision of means controlling the trans verse reciprocating movement of said tool-holder carriage and comprising an eccentric cam carried by the saddle and adapted to revolve round a horizontal axis, an annular cam fitted round the periphery of said eccentric cam, means for imparting to said annular cam a rocking movement round the eccentric cam, a vertical rod adapted to slide vertically inside the'saddle, a bearing member carried at the lower end of said rod and engaging said annular cam, teeth rigid with the upper end of said rod and forming a vertical rack, a shaft adapted to revolve freely inside the saddle and axially slidable therein and extending perpendicularly to the direction of transverse movement of the tool-holder carriage, two series of peripheral teeth rigid with said saft and of which one meshes with the vertical rack, a member adapted to slide longitudinally
  • a thread-cutting machine including a saddle, a longitudinal carriage adapted to slide longitudinal on said saddle and a tool-holder carriage adapted to assume a reciprocating transverse movement over said longitudinal v carriage, the provisions of means controlling the transverse "reciprocating movement of said tool-holder carriage and comprising an eccentric cam carried by the saddle and adapted to revolve round a horizontal axis, an annular cam fitted round the peripheryof said eccentric cam, means for imparting to said. annular cam a V rocking movement round the.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)
  • Turning (AREA)
US781294A 1957-12-20 1958-12-18 Control system for the transverse reciprocating movement of a tool-holder carriage for thread-cutting machines Expired - Lifetime US2973528A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1175525X 1957-12-20

Publications (1)

Publication Number Publication Date
US2973528A true US2973528A (en) 1961-03-07

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US781294A Expired - Lifetime US2973528A (en) 1957-12-20 1958-12-18 Control system for the transverse reciprocating movement of a tool-holder carriage for thread-cutting machines

Country Status (6)

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US (1) US2973528A (fr)
BE (1) BE571968A (fr)
CH (1) CH351813A (fr)
DE (1) DE1175525B (fr)
FR (1) FR1188864A (fr)
GB (1) GB870837A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4300406A (en) * 1979-01-24 1981-11-17 Bielomatik Leuze & Co. Apparatus for driving a plurality of units

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2195175A5 (fr) * 1972-08-04 1974-03-01 Cridan Sa

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US287548A (en) * 1883-10-30 Machine for turning gun barrels
US1118411A (en) * 1913-05-28 1914-11-24 Josef Granz Mechanism for the transmission of movements.
US2338271A (en) * 1942-01-03 1944-01-04 Ulanet Herman Mechanical adjustment means
US2399621A (en) * 1942-06-20 1946-05-07 Bodmer Ernest Device for automatic lathes
US2668303A (en) * 1949-03-08 1954-02-09 Christen Andre Machine for cutting screw threads
US2692509A (en) * 1950-04-28 1954-10-26 A C Wickman Ltd Tool-slide actuating mechanism for lathes or other machines
US2709924A (en) * 1943-07-13 1955-06-07 Cri Dan Adjusting mechanism for machine tools
US2877662A (en) * 1954-04-17 1959-03-17 Woydt Eduard Pivoted cam follower

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE650452C (de) * 1935-04-11 1937-09-23 Richard Herrmann Gewindefraesmaschine
BE462127A (fr) * 1945-01-09

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US287548A (en) * 1883-10-30 Machine for turning gun barrels
US1118411A (en) * 1913-05-28 1914-11-24 Josef Granz Mechanism for the transmission of movements.
US2338271A (en) * 1942-01-03 1944-01-04 Ulanet Herman Mechanical adjustment means
US2399621A (en) * 1942-06-20 1946-05-07 Bodmer Ernest Device for automatic lathes
US2709924A (en) * 1943-07-13 1955-06-07 Cri Dan Adjusting mechanism for machine tools
US2668303A (en) * 1949-03-08 1954-02-09 Christen Andre Machine for cutting screw threads
US2692509A (en) * 1950-04-28 1954-10-26 A C Wickman Ltd Tool-slide actuating mechanism for lathes or other machines
US2877662A (en) * 1954-04-17 1959-03-17 Woydt Eduard Pivoted cam follower

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4300406A (en) * 1979-01-24 1981-11-17 Bielomatik Leuze & Co. Apparatus for driving a plurality of units

Also Published As

Publication number Publication date
CH351813A (fr) 1961-01-31
FR1188864A (fr) 1959-09-25
BE571968A (fr)
GB870837A (en) 1961-06-21
DE1175525B (de) 1964-08-06

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