Routing cutter

• US 4,938,264 A
• Filed: 06/26/1989
• Issued: 07/03/1990
• Est. Priority Date: 07/16/1988
• Status: Expired due to Term

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Ferenczffy, Ladislaus
• Primary Examiner(s): Bray, W. Donald
• Application Number:
  US07/371,421
• Time in Patent Office: 372 Days
• Field of Search: 144/134 R, 144/134 D, 144/136 C, 409/182
• US Class Current: 144/154.5
• CPC Class Codes: B27C 5/10 Portable hand-operated wood-milling machines; Routers
• CPC Class Codes: Y10T 409/306608 End mill [e.g., router, etc.]

Abstract

A routing cutter comprises drive means, an upper housing part arranged to receive the drive means and having a lower side, a cutting tool arranged at the lower side of the upper housing part, a base plate displaceable substantially vertically relative to the upper housing part, and fixable relative to the latter, and means for guiding the base plate and including a column guide, the column guide including a sleeve which is arranged in the upper housing part and displaceable relative to the latter in a displacement direction of the column guide, the column also having a rod which is connected with the base plate and fixably guided in the sleeve.

Claims

1. A routing cutter, comprising drive means;

and upper housing part arranged to receive said drive means and having a lower side;

a cutting tool arranged at said lower side of said upper housing part;

a base plate displaceable substantially vertically relative to said upper housing part, and fixable relative to the latter;

means for guiding said base plate and including a column guide, said column guide including a sleeve which is arranged in said upper housing part and, is guided in said sleeve, and is fixable thereto; and

means cooperating with said upper housing part for displacing said sleeve relative to said upper housing part in a displacement direction of said base plate.

2. A routing cutter as defined in claim 1, wherein said routing tool has a vertical axis, said base being displaceable in a direction extending parallel to the vertical axis of said routing tool.

3. A routing cutter as defined in claim 1, wherein said displacing means has an inner thread, said sleeve having a thread which cooperates with said inner thread of said displacing means.

4. A routing cutter as defined in claim 3, wherein said thread of said sleeve is formed as an outer thread provided on said sleeve.

5. A routing cutter as defined in claim 3, wherein said displacing means comprises at least partially sleeve-shaped adjusting element arranged on said upper housing part, said inner thread being provided in said adjusting element.

6. A routing cutter as defined in claim 5, wherein said adjusting element is formed as a rotary knob.

7. A routing cutter as defined in claim 1, wherein said sleeve has an abutment shoulder;

and further comprising a pressure spring located between said abutment shoulder of said sleeve and said upper housing part and operative so that said sleeve is displaceable against a force of said pressure spring.

8. A routing cutter as defined in claim 5, wherein said adjusting element has a rotatable scale;

and further comprising an adjusting mark provided on said upper housing part and cooperating with said scale.

9. A routing cutter as defined in claim 8, wherein said rotatable scale is formed to provide a zero position adjustment.

12. A routing cutter as defined in claim 1, and further comprising a clamping device arranged perpendicularly to said displacement direction of said base and acting on said rod so as to fix said rod to said sleeve.

13. A routing cutter as defined in claim 12, wherein said clamping device includes a threaded hole formed in a wall of said sleeve and a clamping screw insertable in said threaded hole.

14. A routing cutter as defined in claim 13;

and further comprising a pressing piece arranged between said clamping screw and said rod so that said clamping device acts through said pressing piece on said rod.

10. A routing cutter as defined in claim 10, wherein said adjusting element is formed as a rotary knob, said scale being formed as a scale ring which is frictionally mounted on said rotary knob.

11. A routing cutter as defined in claim 10, wherein said rotary knob and said scale ring are formed so that a friction coefficient between them permits a user to rotate said scale ring manually.

15. A routing cutter comprising drive means;

an upper housing part accommodating said drive means and having a lower side, a cutting tool arranged on said lower side of said upper housing part;

a base plate displaceable relative to said upper housing part and fixable;

a column guide by means said base plate is displaceable and fixable relative to said upper housing part, said column guide having rods; and

a tubular portion composed of an elastic material and having end sides connected with said upper housing part and said base plate, said tubular portion surrounding said rods of said column guide.

16. A routing cutter as defined in claim 15, wherein said tubular portion is formed as a bellows.