GB2122119A - Adjusting device for tool of facing head - Google Patents

Adjusting device for tool of facing head Download PDF

Info

Publication number
GB2122119A
GB2122119A GB08317035A GB8317035A GB2122119A GB 2122119 A GB2122119 A GB 2122119A GB 08317035 A GB08317035 A GB 08317035A GB 8317035 A GB8317035 A GB 8317035A GB 2122119 A GB2122119 A GB 2122119A
Authority
GB
United Kingdom
Prior art keywords
adjusting device
tool
drive shaft
tie
rod
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.)
Granted
Application number
GB08317035A
Other versions
GB8317035D0 (en
GB2122119B (en
Inventor
Hans Hertkorn
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.)
Mauser Werke Oberndorf GmbH
Original Assignee
Mauser Werke Oberndorf GmbH
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 Mauser Werke Oberndorf GmbH filed Critical Mauser Werke Oberndorf GmbH
Publication of GB8317035D0 publication Critical patent/GB8317035D0/en
Publication of GB2122119A publication Critical patent/GB2122119A/en
Application granted granted Critical
Publication of GB2122119B publication Critical patent/GB2122119B/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
    • B23B29/03—Boring heads
    • B23B29/034—Boring heads with tools moving radially, e.g. for making chamfers or undercuttings
    • B23B29/03432—Boring heads with tools moving radially, e.g. for making chamfers or undercuttings radially adjustable during manufacturing
    • B23B29/03489—Adjustment means not specified or not covered by the groups B23B29/03435 - B23B29/03478
    • B23B29/03492—Boring and facing heads
    • 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
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/54—Arrangements or details not restricted to group B23Q5/02 or group B23Q5/22 respectively, e.g. control handles
    • B23Q5/56—Preventing backlash

Abstract

An adjusting device for a tool 8 of a facing head 7 located on a rotating drive shaft 6 to adjust the spacing of the tool from the axis of rotation of the drive shaft comprises a tie-rod (9), which is guided through the drive shaft (6) and is able to rotate, but is attached in an axially rigid manner, to a retaining device (10). The latter is driven axially (Z) by a guide sleeve (25). The guide sleeve (25) is seated on a spindle (19), which is driven in a manner free from play by way of gearing (12) by a d.c. motor (13). <IMAGE>

Description

SPECIFICATION Adjusting device The invention relates to an adjusting device for a tool of a facing head located on a rotating drive shaft, in which case due to the device, the spacing of a cutting edge of the tool from the axis of rotation of the drive shaft can be adjusted.
A device of this type is described in the literature "NC-Praxis", June 1981. The adjustment of the tool by means of a hydraulic cylinder has the drawback that in this case only one adjustment speed is possible and it is not possible to achieve any precision of adjustment.
It is the object of the invention to propose a device of the aforementioned type, which allows infinite exact positioning of the tool of a facing head by way of a programme control.
The above object is achieved according to the invention due to the fact that the tool can be adjusted by means of a tie-rod, which is guided through the drive shaft, that the tie-rod is mounted to rotate, but is axially rigid, in a retaining device surrounding the tie-rod, that the retaining device is attached externally to a guide sleeve, which can be moved free from play by a spindle and that the spindle can be rotated by way of gearing by a d.c.
motor. Due to the d.c. motor, the tie-rod can be adjusted in a linear manner, in which case the adjusting path corresponds to the angle of rotation of the d.c. motor. The operative connection between the d.c. motor and the tie-rod is virtually free from play. The adjustment speed can be controlled by way of the supply voltage of the d.c.
motor. The tie-rod follows the rotary movement of the facing head. Feed movements of the facing head are independent of the tie-rod. They do not influence its setting.
Advantageous developments of the invention will become apparent from the following description of one embodiment and from the subclaims. In the drawings: Figure 1 is a diagrammatic view of a machine with the adjusting device, Figure 2 is a sectional view of the adjusting device on line Il-I I according to figure 3 and Figure 3 is a plan view of the adjusting device.
A carriage 2 is able to move in the feed direction V on a machine bed 1. A workpiece 3 is clamped securely on the machine bed 1.
The carriage 2 supports a drive motor 4, which by way of a belt drive 5 sets a drive shaft 6 in rotation in the direction D. A facing head 7 is seated on the drive shaft 6. A tool 8 is able to move in the direction E on the facing head 7.
The displacement of the tool 8 in the direction of arrow E takes place by means of a tie-rod 9, which for this purpose is able to move axially in the direction Z. The tie-rod 9 passes through the drive shaft 6 and rotates with the latter. At the end of the tie-rod 9 remote from the facing head 7, the tie-rod is mounted to rotate, but is axially rigid, in a retaining device 10. The retaining device 10 can be adjusted by a d.c. motor 13 by way of a spindle drive 11 and gearing 12. The d.c. motor 13 together with the gearing 12 and spindle drive 11 are likewise seated on the carriage 2.
The tie-rod 9, retaining device 10, spindle drive 11, gearing 12 and d.c. motor 13 form the adjusting device for the tool 8. The latter is illustrated in figure 2.
The speed of the d.c. motor 13 can be adjusted up to 3000 r.p.m. It comprises an angular step transmitter (not shown in detail). The latter makes it possible, by way of a programme control unit, to set a desired, absolute speed of the motor, which is necessary for a desired adjustment of the tierod.
The d.c. motor 13 supports a double pinion 14.
Engaging in the latter on the one hand is a first intermediate gear 15 and on the other hand a second intermediate gear 16. The intermediate gear 15 is mounted on an intermediate shaft 17.
The second intermediate gear 16 is seated on the intermediate gear 15. Both intermediate gears 15 and 16 are rotated with respect to each other so that one intermediate gear is in contact with the right-hand flanks and the other gear is in contact with the left-hand flanks of the teeth of the double pinion 14. Thus, a drive which is free from play can be adjusted. Both intermediate gears 15 and 16 engage in a gear 18. Freedom from play is also achieved between the former and the latter. The gear 18 is seated on a ball roller spindle 19, which is mounted on a roller bearing 20.
Seated on the ball roller spindle 19 is a double nut, which comprises two nuts 22 and 23, which can be braced one against the other by means of screws 21. Screwed to the nut 23 is a ring 24.
Fixed to the latter is a guide sleeve 25. The latter is able to move in the direction Z in a housing 26.
Attached to the guide sleeve 25 is an entrainment member 27. The latter extends through a slot 28 in the housing 26. Outside the housing 26, the entrainment member 27 comprises a roller bearing 29. The latter supports a hollow shaft 30. The tie-rod 9 is attached to the hollow shaft 30 by means of clamping devices 31 and 32. The tie-rid 9 is hollow. Located at its end is a bush 33, which contains lubricant or coolant, which is to be supplied through the hollow tie rod 9 to the facing head 7.
Attached to the guide sleeve 25 are trip cams 34, 35 and 36, which lie outside the housing 26 (cf figure 3). Electrical switches 37 are associated with the trip cams 34, 35 and 36. The trip cams 34 and 36 serve for stopping the d.c. motor 13 in the end positions. The trip cam 35 serves for establishing a reference point.
The adjusting device described operates approximately as follows: When the d.c. motor 13 is switch on, then the ball roller spindle 19 is rotated free from play, so that the double nut 22, 23 travels on the latter and the guide sleeve 25 moves in a manner free from play. The guide sleeve 25 entrains the hollow shaft 30. Due to this, the tie-rod 9 is moved axially by the desired amount. This results in a corresponding adjustment of the tool 8. Thus, different diameters can be faced with the tool 8, after its adjustment. The adjustment is controlled by a programme-switching mechanism.
At the time of rotation of the drive shaft 6 respectively facing head 7, the tie-rod 9 is entrained. It rotates in the roller bearing 29.

Claims (7)

1. Adjusting device for a tool of a facing head mounted on a rotary drive shaft so as to adjust the spacing of a cutting edge of the tool with respect to the axis of rotation of the drive shaft comprising a tie-rod which is guided through the drive shaft and is mounted rotatably but axially undisplaceably in a surrounding retaining device attached externally to a guide sleeve movable without play by a spindle rotatable by a d.c. motor by way of gearing.
2. Adjusting device according to claim 1, wherein the gearing is adjusted in a manner free from play by a flank-bracing intermediate gears.
3. Adjusting device according-to claim 1 or 2, wherein the guide sleeve is seated on the spindle by means of a double nut braced in a manner free from play.
4. Adjusting device according to any one of the preceding claims, wherein the tie-rod is hollow.
5. Adjusting device according to any one of the preceding claims, wherein trip cams are located on the guide sleeve.
6. Adjusting device according to any one of the preceding claims, wherein an angular step transmitter is connected to the d.c. motor.
7. An adjusting device substantially as herein described with reference to and as illustrated in the accompanying drawings.
GB08317035A 1982-06-25 1983-06-23 Adjusting device for tool of facing head Expired GB2122119B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19823223685 DE3223685A1 (en) 1982-06-25 1982-06-25 ADJUSTMENT DEVICE

Publications (3)

Publication Number Publication Date
GB8317035D0 GB8317035D0 (en) 1983-07-27
GB2122119A true GB2122119A (en) 1984-01-11
GB2122119B GB2122119B (en) 1986-08-20

Family

ID=6166790

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08317035A Expired GB2122119B (en) 1982-06-25 1983-06-23 Adjusting device for tool of facing head

Country Status (5)

Country Link
CH (1) CH659412A5 (en)
DE (1) DE3223685A1 (en)
FR (1) FR2529121B1 (en)
GB (1) GB2122119B (en)
IT (2) IT1163551B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4615652A (en) * 1984-12-31 1986-10-07 Gte Valeron Corporation Cutting tool compensator for rotary machine tool
US4622871A (en) * 1984-12-31 1986-11-18 Gte Valeron Corporation Cutting tool compensator for stationary machine tool
NL9500508A (en) * 1995-03-14 1996-10-01 Stichting Administratiekantoor Cutting device with rotatable cutting rollers

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1019201B (en) * 1955-06-02 1957-11-07 Herbert Lindner G M B H Cooling device on thread generating machines, preferably thread grinding machines
CH351015A (en) * 1958-12-30 1960-12-31 Genevoise Instr Physique Rotary tool spindle machine tool equipment
US2968965A (en) * 1959-06-24 1961-01-24 Sundstrand Corp Drive with anti-backlash means
GB940519A (en) * 1962-01-11 1963-10-30 Rolls Royce Nut and leadscrew assembly
DE1477394A1 (en) * 1963-06-29 1969-01-30 Heller Geb Gmbh Maschf Turning head for turning out and facing
US3290965A (en) * 1965-02-05 1966-12-13 G Novosib Zd Tjazhelykh Stanko Boring machine
US3884590A (en) * 1974-05-22 1975-05-20 Lamb Co F Jos Adjustable dual tool boring bar
US4250775A (en) * 1978-07-24 1981-02-17 Devlieg Machine Company Machine tool and method
US4577535A (en) * 1982-06-03 1986-03-25 Amca International Corporation Contouring machine with radial slide head

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4615652A (en) * 1984-12-31 1986-10-07 Gte Valeron Corporation Cutting tool compensator for rotary machine tool
US4622871A (en) * 1984-12-31 1986-11-18 Gte Valeron Corporation Cutting tool compensator for stationary machine tool
NL9500508A (en) * 1995-03-14 1996-10-01 Stichting Administratiekantoor Cutting device with rotatable cutting rollers

Also Published As

Publication number Publication date
CH659412A5 (en) 1987-01-30
GB8317035D0 (en) 1983-07-27
GB2122119B (en) 1986-08-20
IT8321706A0 (en) 1983-06-21
DE3223685A1 (en) 1983-12-29
DE3223685C2 (en) 1989-05-11
IT1163551B (en) 1987-04-08
FR2529121A1 (en) 1983-12-30
IT8322171V0 (en) 1983-06-21
FR2529121B1 (en) 1989-09-01

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19920623