Machine tool for machining a workpiece and spindle carrier assembly for use on such a machine tool

Patent metadata

Field	Value
Publication number	US-10518337-B2
Application number	US-201715696473-A
Country	US
Kind code	B2
Filing date	Sep 6, 2017
Priority date	Sep 6, 2016
Publication date	Dec 31, 2019
Grant date	Dec 31, 2019

Abstract

A machine tool includes a machine bed, a tool clamping portion which is arranged on the machine bed and serves to clamp a workpiece on the machine tool, a swivel arm receiving portion arranged on the machine bed, a first swivel arm pivotally mounted on the swivel arm receiving portion about a first axis of rotation, a second swivel arm pivotally mounted on the first swivel arm about a second axis of rotation, a spindle carrier arm rotatably mounted on the second swivel arm about a third axis of rotation, a milling head rotatably mounted on the spindle carrier arm about a fourth axis of rotation, and a work spindle which is held on the milling head and serves to receive a tool, wherein the third axis of rotation is aligned perpendicularly or transversely to the fourth axis of rotation.

First claim

The invention claimed is:

1. A machine tool for machining a workpiece, comprising:
a machine bed,
a workpiece clamping portion, which is arranged on the machine bed and serves to clamp a workpiece on the machine tool,
a swivel arm receiving portion arranged on the machine bed,
a first swivel arm pivotally mounted on the swivel arm receiving portion about a first axis of rotation,
a second swivel arm pivotally mounted on the first swivel arm about a second axis of rotation,
a spindle carrier arm rotatably mounted on the second swivel arm about a third axis of rotation,
a milling head rotatably mounted on the spindle carrier arm about a fourth axis of rotation, and
a tool spindle which is held on the milling head and serves to receive a tool, wherein the third axis of rotation is aligned perpendicularly or transversely to the fourth axis of rotation,
the swivel arm receiving portion has two swivel arm support bodies, and
the first swivel arm is held so as to be pivotally mounted between the two swivel arm support bodies, wherein
one of the swivel arm support bodies is smaller than the other swivel arm support body of the two swivel arm support bodies.

2. The machine tool according to claim 1 , wherein the second axis of rotation is aligned parallel to the first axis of rotation.

3. The machine tool according to claim 1 , wherein the third axis of rotation is aligned perpendicularly or transversely to the second axis of rotation.

4. The machine tool according to claim 1 , wherein a spindle axis of the tool spindle is aligned perpendicularly or transversely to the fourth axis of rotation.

5. The machine tool according to claim 1 , wherein the workpiece clamping portion is linearly movable relative to the swivel arm receiving portion on the machine bed in at least one linear axis direction.

6. The machine tool according to claim 1 , wherein the swivel arm receiving portion is arranged on an axis slide which is linearly movable on the machine bed.

7. The machine tool according to claim 6 , wherein the axis slide is linearly movable in a direction aligned parallel to the first axis of rotation.

8. The machine tool according to claim 1 , wherein the second swivel arm is held on the side of the first swivel arm that faces the smaller swivel arm support body.

9. The machine tool according to claim 1 , wherein each of the two swivel arm support bodies of the swivel arm receiving portion has at least one drive for driving a swivel movement of the first swivel arm.

10. The machine tool according to claim 1 , wherein each of the two swivel arm support bodies of the swivel arm receiving portion has at least one clamped transmission for transmitting a torque while driving a swivel movement of the first swivel arm.

11. The machine tool according to claim 1 , wherein the first swivel arm has at least one drive for driving a swivel movement of the second swivel arm.

12. The machine tool according to claim 1 , wherein the first swivel arm has at least one clamped transmission for transmitting a torque while driving a swivel movement of the second swivel arm.

13. The machine tool according to claim 10 , wherein each of the clamped transmissions has at least one driven drive element and at least two driving drive elements, which simultaneously work together with the driven drive element.

14. The machine tool according to claim 1 , wherein the second swivel arm has at least one drive for driving a rotary motion of the spindle carrier arm.

15. The machine tool according to claim 14 , wherein the drive for driving the rotary motion of the spindle carrier arm is made as a torque drive.

16. The machine tool according to claim 1 , wherein the spindle carrier arm has at least one drive for driving a rotary motion of the milling head.

17. The machine tool according to claim 16 , wherein the drive for driving the rotary motion of the milling head is made as a torque drive.

18. The machine tool according to claim 1 , comprising a tool magazine for storing a plurality of tools for inserting and/or exchanging tools on the tool spindle.

19. The machine tool according to claim 1 , comprising
in addition to a first spindle carrier assembly, which comprises the swivel arm receiving portion, the first swivel arm, the second swivel arm, the spindle carrier arm, the milling head and the tool spindle, a second spindle carrier assembly is arranged on the machine bed.

20. The machine tool according to claim 19 , wherein the second spindle carrier assembly comprises:
a second swivel arm receiving portion arranged on a machine bed of the machine tool,
a third swivel arm pivotally mounted on the second swivel arm receiving portion about a fifth axis of rotation,
a fourth swivel arm pivotally mounted on the third swivel arm about a sixth axis of rotation,
a second spindle carrier arm rotatably mounted on the fourth swivel arm about a seventh axis of rotation,
a second milling head rotatably mounted on the second spindle carrier arm about an eighth axis of rotation, and
a second tool spindle which is held on the second milling head and serves to receive a tool,

wherein the seventh axis of rotation is aligned perpendicularly or transversely to the eighth axis of rotation.

21. The machine tool according to claim 20 , wherein the first, second, fifth and sixth axes of rotation are all aligned parallel to one another, wherein the first and fifth axes of rotation are aligned coaxially to one another.

22. The machine tool according to claim 20 , wherein the first and second spindle carrier assemblies are arranged in the direction of the first and/or fifth axis of rotation next to one another on the machine bed.

23. A spindle carrier assembly for use on a machine tool, comprising
a swivel arm receiving portion that can be arranged or mounted on the machine bed of the machine tool,
a first swivel arm which is pivotally mounted on the swivel arm receiving portion about a first axis of rotation,
a second swivel arm which is pivotally mounted on the first swivel arm about a second axis of rotation,
a spindle carrier arm which is rotatably mounted on the second swivel arm about a third axis of rotation,
a milling head which is rotatably mounted on the spindle carrier arm about a fourth axis of rotation, and
a tool spindle which is held on the milling head and serves to receive a tool, wherein the third axis of rotation is aligned perpendicularly or transversely to the fourth axis of rotation
the swivel arm receiving portion has two swivel arm support bodies, and
the first swivel arm is held so as to be pivotally mounted between the two swivel arm support bodies, wherein
one of the swivel arm support bodies is smaller than the other swivel arm support body of the two swivel arm support bodies.

Assignees

• Deckel Maho Pfronten Gmbh

Inventors

• Kschier Uwe
• Geissler Alfred

Classifications

• B23Q1/4885

  followed parallelly by a single rotating pair · CPC title

• B23Q1/5475

  followed perpendicularly by a single rotating pair · CPC title

• B25J9/0084

  comprising a plurality of manipulators · CPC title

• B25J5/02

  travelling along a guideway · CPC title

• B25J11/005

  Manipulators for mechanical processing tasks · CPC title