Boring device
AssigneeSandvik Aktiebolag
InventorsKurt Lagerholm, Kurt H. A. E. Faber
Life of this patent
Estimating the term…
Abstract
The present invention relates to a boring device for boring internal surfaces of hollow workpieces of the kind which comprises radially adjustable insert-provided holders, there being provided pressure means, such as steering pins so as to effect radial adjustment of the insert holder from an outer active working position to an inactive position. The radial adjustment occurs by having each insert holder via said steering pins supported against a bushing of non-circular cross section actuatable by a shaft member centered within the bushing, said bushing upon its rotation effecting said radial adjustment.
Claims14
A boring device comprising:
- a boring head,
- at least one guide pad arranged on said head to abut and slide along the surface of a bore to be machined,
- at least one insert holder mounted on said head for radial adjustment, and
- adjustment means for said tool holder comprising:
- a shaft,
- means mounting said shaft for rotation within said head,
- a bushing having a non-circular outer periphery mounted on said shaft for common rotation therewith, there being radial clearance between said bushing and shaft to enable said bushing to shift radially relative to said shaft, and
- pushing means interposed between said insert holder and said non-circular outer periphery of said bushing in the vicinity of said radial clearance to follow said outer periphery as said shaft rotates, to radially position said insert holder.
Dependencies are inferred from the claim text.