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US 5,102,268 AGranted
Fine adjustment mechanism for a toolholder
AssigneeKennametal Inc.
InventorRobert N. Mitchell
Life of this patent
Estimating the term…
Abstract
The present invention relates to a milling cutter having a cutter body and a plurality of replaceable tool cartridges circumferentially spaced about the outer periphery of the cutter body. An adjustment mechanism permits adjustment of the tool cartridges in the direction parallel to the axis of rotation of the cutter body. The adjustment mechanism includes an adjustment screw threaded into a corresponding bore in the cutter body. The head of the adjustment screw projects into an inclined throughbore in the tool cartridge. When the adjustment screw is turned, the head of the screw bears against the inner surface of the throughbore causing the tool cartridge to be axially displaced. A locking screw is tightened to secure the tool cartridge in place after it has been adjusted.
Claims17
A milling cutter comprising:
- (a) a generally cylindrical cutter body;
- (b) a plurality of replaceable tool cartridges circumferentially spaced about the cutter body, each said tool cartridge having a recessed insert seat for receiving a cutting insert having a cutting edge adapted to engage a workpiece;
- (c) means for adjusting the position of each tool cartridge in a direction parallel to the axis of rotation of the cutter body, said adjusting means including:
- (1) a threaded hole formed in the cutter body;
- (2) an adjusting screw having a rounded head screwed into the threaded hole of the cutter body;
- (3) a throughbore extending through the tool cartridge for receiving the rounded head of the adjusting screw, said throughbore being inclined relative to the axis of the adjusting screw so that when the screw is turned the rounded head of the adjusting screw bears against the inner surface of the throughbore to urge the tool cartridge either forwardly or backwardly in a direction parallel to the axis of rotation of the cutter body;
- and
- (d) means for locking the tool cartridge in its adjusted position.
5 more elements
A milling cutter comprising:
- (a) a cutter body adapted to be mounted on a machine spindle and rotated about a central axis, said cutter body including a plurality of circumferentially spaced tool cartridge slots;
- (b) a plurality of removable tool cartridges disposed in respective tool cartridge slots, each tool cartridge having a forward portion formed with an insert seat adapted to receive a cutting insert and a rearward portion;
- (c) means associated with each tool cartridge for adjusting the position of the tool cartridge in a direction parallel to the central axis of the cutter body, said adjusting means including:
- (1) a threaded hole formed in the cutter body and extending radially with respect to the central axis of the cutter body;
- (2) an adjusting screw having a spherical head threaded into the threaded hole of the cutter body;
- and
- (3) a throughbore extending through the rearward portion of the tool cartridge for receiving the spherical head of the adjusting screw, the axis of said throughbore being inclined forwardly relative to the axis of the adjusting screw and lying in a radial plane extending through the central axis of the cutter body so that when the adjusting screw is turned the spherical head bears against the inner surface of the throughbore to urge the tool cartridge either forwardly or backwardly in a direction parallel to the central axis of the cutter body;
- and
- (d) securing means for securing the tool cartridge in a fixed position after adjustment of the tool cartridge.
6 more elements
A milling cutter comprising:
- (a) a cutter body adapted to be mounted on a machine spindle and rotated about a central axis, said cutter body including a plurality of recesses formed around an outer periphery of said cutter body;
- (b) a plurality of removable tool cartridges disposed in respective recesses;
- (c) wherein each recess includes a first tool reference surface extending generally perpendicular to a radius of the cutter body for positioning the tool cartridge in the radial direction, and a second tool reference surface extending generally parallel to a radius of the cutter body for positioning the tool cartridge in the tangential direction, both of said first and second tool reference surfaces being parallel to the axis of rotation of said cutter body;
- (d) means for adjusting the position of the tool cartridge in a direction parallel to the central axis of the cutter body, said adjusting means including:
- (1) a first threaded hole formed in the cutter body and extending along a radius of the cutter body;
- (2) an adjusting screw having a generally spherical head threaded into the first threaded hole of the cutter body;
- and
- (3) a throughbore extending through the tool cartridge for receiving the spherical head of the adjusting screw, the axis of the throughbore being inclined relative to the axis of the adjusted screw and central axis of the cutter body so that when the adjusted screw is turned the spherical head bears against the inner surface of the throughbore causing the tool cartridge to be axially displaced;
- and
- (e) means for securing the tool cartridge in a fixed position.
7 more elements
A tool mounting apparatus comprising:
- (a) a support block;
- (b) at least one toolholder removably mounted on said support block and having an insert seat for receiving a cutting insert;
- (c) means for adjusting the toolholder in an axial direction relative to the support block, said adjusting means including:
- (1) a threaded hole formed in the support block;
- (2) an adjusting screw having a rounded head screwed into the threaded hole in the support block;
- (3) a throughbore extending through the toolholder for receiving the rounded head of the adjusting screw, said throughbore being inclined relative to the axis of the adjusting screw so that when the adjusting screw is turned the rounded head engages the inner surface of the throughbore to urge the toolholder either forwardly or backwardly in the axial direction;
- and
- (d) means for securing the toolholder in its adjusted position.
5 more elements
Dependencies are inferred from the claim text.