Device configured to selectively apply tools against a workpiece on a lathe

Patent metadata

Field	Value
Publication number	US-2018093333-A1
Application number	US-201615285612-A
Country	US
Kind code	A1
Filing date	Oct 5, 2016
Priority date	Oct 5, 2016
Publication date	Apr 5, 2018
Grant date	—

Abstract

A device for selectively moving a first or second tool relative to a workpiece on a lathe, the device including a first and a second tool providing system, each of the tool providing systems including a guide rail having a length direction, a slide slidably mounted on the guide rail, the slide being shiftable from a waiting position to a work position, a tool retainer on the slide, a block fixed relative to the guide rail, a first lever pivotably mounted to the block, a second lever having a first end pivotably mounted to the block and a second end pivotably mounted to the slide, and a linear actuator having a rod pivotably connected to the first lever, the rod extending in a direction not parallel to the length direction of the guide rail and being shiftable from a first position to a second position.

First claim

What is claimed is:

1 . A device for selectively applying a first or at least one second tool against a workpiece on a lathe, the device including:
a first and at least one second tool providing system, each of the first and the at least one second tool providing systems comprising: a tool retainer; and a rod mechanically connected to the tool retainer and configured to selectively shift a tool held by the tool retainer in a shifting direction from a waiting position in which the tool is spaced from the workpiece to a work position in which the tool is held against the workpiece.

2 . The device according to claim 1 , further including:
a pneumatic or hydraulic cylinder configured to move the rod.

3 . The device according to claim 1 , wherein each of the first and at least one second tool providing systems further includes:
a first joint, a first lever, a second joint, a second lever, and a third joint, wherein the first joint pivotably connects the rod to the first lever, wherein the second joint pivotably connects the first lever to the second lever, and wherein the third joint pivotably connects the second lever to the retaining element.

4 . The device according to claim 3 , further including:
a guide rail fixed against movement in a direction perpendicular to the shifting direction, the retaining element being mounted for sliding movement along the guide rail.

5 . The device according to claim 3 , wherein the first lever is rotatable about a lever pivot axis fixed relative to the guide rail.

6 . The device according to claim 3 , wherein, in the work position, parallel axes of rotation of the second joint, of the third joint, also of the first joint, and the lever pivot axes parallel thereto are disposed such that a straight line extending perpendicular to them can be drawn, which extends along the shifting direction.

7 . The device according to claim 6 , wherein in the work position a longitudinal direction of the rod extends perpendicular to the straight line extending along the shifting direction.

8 . The device according to claim 3 , further including
a table movable perpendicular to the shifting direction of the retaining element, on which the first and the second tool providing system are mounted adjacent to one another.

9 . The device according to claim 3 , wherein the retaining element can be shifted from the work position to the waiting position in a straight line by a distance between 20 mm and 50 mm.

10 . The device according to claim 3 , further including:
a controller that is configured: to bring the first tool providing system into the waiting position; to move the table transverse to the shifting direction of the retaining element of the first tool providing system; and to bring the second tool of the second tool providing system into the work position.

11 . A system comprising:
the lathe, the workpiece on the lathe, the tool held by the tool retainer, and the device according to claim 1 positioned with the tool in contact with the workpiece.

12 . A device for selectively moving a first tool or a second tool relative to a workpiece on a lathe, the device including:
a first and a second tool providing system, each of the first and the second tool providing systems comprising: a guide rail having a length direction; a slide slidably mounted on the guide rail, the slide being shiftable from a waiting position to a work position; a tool retainer on the slide; a block fixed relative to the guide rail; a first lever pivotably mounted to the block for pivotal movement about a first axis of rotation; a second lever having a first end pivotably mounted to the block for pivotal movement about a second axis of rotation and a second end pivotably mounted to the slide for pivotable movement about a third axis of rotation; a linear actuator having a rod pivotably connected to the first lever, the rod extending in a direction not parallel to the length direction of the guide rail and being shiftable from a first position to a second position, wherein shifting the rod of the first tool providing system from the first position to the second position moves slide toward the workpiece and shifting the rod of the first tool providing system from the second position to the first position moves the slide away from the workpiece.

13 . The device according to claim 12 , wherein the actuator is a pneumatic or hydraulic cylinder.

14 . The device according to claim 12 , wherein, when the slide of the first tool providing system is in the waiting position, the first axis of rotation and the third axis of rotation lie in a plane and the second axis of rotation lies outside the plane and when the slide of the first tool providing system is in the working position, the first, second and third axes of rotation lie in the plane.

15 . The device according to claim 12 , further including:
a table movable perpendicular to the guide rail length direction, the first and second tool providing systems being mounted on the table adjacent to one another.

16 . The device according to claim 15 , wherein the tool retainer is shiftable from the work position to the waiting position in a straight line by a distance of 20 mm to 50 mm.

17 . The device according to claim 16 , further including:
a controller configured to control the linear actuator and the table.

18 . A system comprising:
the lathe, the workpiece on the lathe, the first tool, the second tool, and the device according to claim 12 positioned with the first tool in contact with the workpiece and the second tool spaced from the workpiece.

19 . A device for selectively moving a first tool or a second tool relative to a workpiece on a lathe, the device including:
a first and a second tool providing system, each of the first and the second tool providing systems comprising: a guide rail having a length direction; a slide slidably mounted on the guide rail, the slide being shiftable from a waiting position to a work position; a tool retainer on the slide; a block fixed relative to the guide rail; means for connecting the slide to the block; and means for moving the slide from the waiting position to the work position, the means for moving being operatively connected to the means for connecting.

Assignees

• Pfandl Erich
• Kern Egon Werner
• Skf Ab

Inventors

• Pfandl Erich
• Kern Egon Werner

Classifications

• B23B2270/025

  Hydraulics · CPC title

• B23B29/248 Primary

  with individually adjustable toolholders · CPC title

• B23B2270/027

  Pneumatics · CPC title

• B23B29/26

  Tool holders in fixed position · CPC title

• B23Q5/26

  Fluid-pressure drives · CPC title