US3196719A - Tailstock with multiple drive modes - Google Patents
Tailstock with multiple drive modes Download PDFInfo
- Publication number
- US3196719A US3196719A US117875A US11787561A US3196719A US 3196719 A US3196719 A US 3196719A US 117875 A US117875 A US 117875A US 11787561 A US11787561 A US 11787561A US 3196719 A US3196719 A US 3196719A
- Authority
- US
- United States
- Prior art keywords
- cylinder
- tailstock
- pinion
- handwheel
- rack
- 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
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B23/00—Tailstocks; Centres
-
- 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
- Y10T82/2564—Tailstock
Definitions
- the present invention relates to a tailstock adopted for permitting multiple drive modes, namely drive modes offering either manual operation at slow or high speed, or mechanical operation, the driving means being designed so that changeovers from one mode to another take place in response to movement of a single member.
- the single control member may consist of a nut which is integral with said handwheel and operated by an eccentric bush which moves the tapped part of said nut into or out of engagement with a rack rigidly connected to the cylinder of said tailstock, said rack being cut in the form of a screw-thread and being in constant mesh with a matching transverse pinion to which may be connected the star-wheel.
- the single control member consists of a shifting pinion which can be selectively placed in an inoperative position, in mesh with a screw rigidly connected to the handwheel, or in mesh with a mechanically-driven worm gear, said shifting pinion cooperating with a broad pinion which is in constant mesh with said tailstock cylinder rack.
- Assemblies obtained in this way are convenient to use, highly accurate and quite inexpensive to produce.
- FIG. 1 is an axial section of a tailstock with three control modes, said section being taken along the broken line I-I in FIG. 2;
- FIG. 2 is a cross-section taken along the line II-II in FIG. 1;
- FIG. 3 is a section taken along the line III-III in FIG. 1.
- the mechanism illustrated in the drawing comprises a tailstock cylinder 16 which is provided with a rack 17 rigidly secured thereto. This rack cooperates with a broad transverse pinion 18 which projects to one side of said sleeve.
- the rear of cylinder 16 is inserted into a bush 19 which is mounted concentrically on said cylinder and rotatably supported by at least one ball-bearing 20 housed in the tailstock body 21.
- An operating handwheel 22 is keyed to the sleeve 19, onto the other end of which are cut external teeth 23.
- a shaft 24 provided with at least one spline 25 is disposed parallel to the axis of the broad pinion 18 and has slidably mounted thereon, a shifting pinion 26.
- An operating pin 27, having a protruding driving-head 28, is fitted into the head of the tailstock and carries either integrally or keyed thereon a threaded portion 29 which is so disposed as to enable the shifting pinion 26 to occupy ice,
- the shifting pinion may be actuated by any convenient means, for instance by means of a fork (not shown).
- the shifting pinion couples the pin 27 to the pinion 18 to permit mechanical driving of the cylinder 16.
- the disposition of the pin 27, shown in the figures as being parallel to the axis of the sleeve 16, may have any other configuration susceptible of facilitating its junction with a mechanical driving member.
- the cylinder 16 can be axially translated manually at high speed by means, say, of a star-wheel mounted on the supporting shaft of pinion 18 or on the shaft 24 of shifting pinion 26.
- the shifting pinion 26 allows the handwheel 22 to be coupled with the cylinder 16, whereby slow manual irreversible feed can be imparted to the latter.
- the teeth 23 preferably consist of sections of spiral threading, and this also applies to the teeth of threaded portion 29.
- the inclination of the teeth may be identical for both pinions.
- the teeth 23 may be of the single thread type, while those of threaded portion 29 may comprise two threads, the ratio between the diameters being two to one.
- a tailstock device comprising a slidably supported cylinder, a rack coupled to the cylinder for movement therewith, a pinion gear adapted for being externally driven and in constant mesh with said rack, a handwheel coaxially disposed with respect to said cylinder and traversed by said cylinder and means for selectively connecting said handwheel to said rack in irreversible driving relation whereby said cylinder can be selectively driven externally and sensitively through said pinion gear and irreversibly by said handwheel also through said pinion gear.
- a tailstock device comprising a slidably supported cylinder, a rack coupled to the cylinder for movement therewith, a pinion gear adapted for being externally driven and in mesh with said rack, a handwheel, said pinion gear having an axis of rotation extending transverse of said cylinder, a shifting pinion gear parallel to the first said gear and movable along an axis parallel thereto between three positions, said shifting gear in a first position engaging the first said pinion gear for coupling the same to a mechanical drive, said shitting gear in a second position being in a free-wheeling position to permit the first said pinion gear to drive the rack, said handwheel being drivingly connected through said shifting gear to the first said pinion gear in the third position of the shifting gear whereby the cylinder can be driven by the handwheel.
- a tailstock as claimed in claim 2 comprising a bush connected to said handwheel for rotation therewith, said bush having an internally threaded surface which is in driving engagement with said shifting gear with the latter in said third position thereof.
- a tailstock' as claimed in claim 2 comprising a thisaded Pin which is adapted tor onnection to a mechanical drive, said pin being in threaded engagement with the shifting gear with the latter in said first position.
- a tailstock as claimed in claim 5, comprising a bush connected to said handwheel for rotation therewith, said bush having an internally threaded surface which is in driving engagement with said shifting gear with the latter in said third position thereof, and wherein said pin and 4 References Cited by the Examiner UNITED STATES PATENTS 1,811,504 6/31 John son'et a1. 82-31 2,115,094 4/38 Bucklein 8231 2,391,154 12/45 Groene 8231 2,865,242 12/58 Kemper et al. 823l ANDREW R. JUHASZ, Primary Examiner.
- bush include threads in a number proportional to the 10 RICHARD H. EANES, JR.,-WI'L'LIAM W. DYER, In,
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Turning (AREA)
- Transmission Devices (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR831015A FR1269144A (fr) | 1960-06-24 | 1960-06-24 | Contre-pointe à commandes multiples |
Publications (1)
Publication Number | Publication Date |
---|---|
US3196719A true US3196719A (en) | 1965-07-27 |
Family
ID=8734138
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US117875A Expired - Lifetime US3196719A (en) | 1960-06-24 | 1961-06-19 | Tailstock with multiple drive modes |
Country Status (4)
Country | Link |
---|---|
US (1) | US3196719A (fr) |
CH (1) | CH379875A (fr) |
FR (1) | FR1269144A (fr) |
GB (1) | GB964785A (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5313694A (en) * | 1992-01-24 | 1994-05-24 | Takisawa Machine Tool Co., Ltd. | Machine tool for non-circular and other machining |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1811504A (en) * | 1928-05-29 | 1931-06-23 | Porter Mcleod Machine Tool Co | Roll turning machine |
US2115094A (en) * | 1937-06-25 | 1938-04-26 | Axelson Mfg Co | Tailstock for lathes |
US2391154A (en) * | 1943-05-10 | 1945-12-18 | Leblond Mach Tool Co R K | Tailstock for lathes |
US2865242A (en) * | 1957-04-04 | 1958-12-23 | Leblond Mach Tool Co R K | Handwheel actuated machine tool mechanism |
-
1960
- 1960-06-24 FR FR831015A patent/FR1269144A/fr not_active Expired
-
1961
- 1961-06-15 CH CH703061A patent/CH379875A/fr unknown
- 1961-06-16 GB GB21942/61A patent/GB964785A/en not_active Expired
- 1961-06-19 US US117875A patent/US3196719A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1811504A (en) * | 1928-05-29 | 1931-06-23 | Porter Mcleod Machine Tool Co | Roll turning machine |
US2115094A (en) * | 1937-06-25 | 1938-04-26 | Axelson Mfg Co | Tailstock for lathes |
US2391154A (en) * | 1943-05-10 | 1945-12-18 | Leblond Mach Tool Co R K | Tailstock for lathes |
US2865242A (en) * | 1957-04-04 | 1958-12-23 | Leblond Mach Tool Co R K | Handwheel actuated machine tool mechanism |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5313694A (en) * | 1992-01-24 | 1994-05-24 | Takisawa Machine Tool Co., Ltd. | Machine tool for non-circular and other machining |
Also Published As
Publication number | Publication date |
---|---|
CH379875A (fr) | 1964-07-15 |
GB964785A (en) | 1964-07-22 |
FR1269144A (fr) | 1961-08-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3196719A (en) | Tailstock with multiple drive modes | |
US2991760A (en) | Tool feed and control | |
US2776577A (en) | Screw actuating device | |
GB603286A (en) | Improvements in control means for the power drive of turret lathes and like machine tools | |
US3301134A (en) | Incremental hob shift mechanism | |
US4186615A (en) | Steering gears | |
US4608889A (en) | Lathe for cutting wooden spindles | |
US2388251A (en) | Tube reducing mill | |
US2509696A (en) | Tapping box | |
SE7402289L (fr) | ||
DE953579C (de) | Kraftfahrzeuglenkgetriebe | |
GB963898A (en) | Screw-and-nut mechanism incorporating means for eliminating back-lash | |
US2409993A (en) | Machine for threading coil forms | |
US3481230A (en) | Automatic machine tools | |
GB569766A (en) | Improvements relating to vehicle steering mechanisms | |
US2674146A (en) | Self-centralizing and synchronizing device for arbor plug gauges | |
US1343435A (en) | Work-holding attachment for milling threads | |
US2825913A (en) | Rotatable threaded element operative to reciprocate collapsing means for collapsible thread chasers in a die head | |
US2620698A (en) | Gearing and locking means | |
US4114461A (en) | Lever-operated feed device | |
US1328670A (en) | Final adjusting device for machine-tools | |
DE828341C (de) | Spannfutter | |
SU426788A1 (ru) | Зажимное устройство | |
US2468659A (en) | Steering elements of small and medium-sized motor cultivators | |
GB574889A (en) | Improvements in or relating to power traverse mechanism for lathes and like machine tools |