US 6,203,478 B1Granted

Machine for drilling oil holes in crankshafts

AssigneeEtxe-Tar, S.A.

InventorGorka Gorrochategui

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Abstract

A machine for drilling oil-holes in crankshafts and the corresponding procedure. It can be used to drill one, two or more crankshafts per cycle. Each crankshaft can revolve on its own axis. The unit described is mounted on a horizontally-faced rotary table with vertical rotating axis, to place the crankshafts at different angles to the Z axis of the machining module, maintaining the horizontal position of the longitudinal axes of the crankshafts. Facing the unit is the machining module, provided with two horizontal spindles, drill tool-holders, with their corresponding guide bushings and parallel to each other, one on top of the other, at the same distance as the two crankshafts. The module has movement in three co-ordinates: axis X (horizontal-transverse), Y (vertical ) and Z (horizontal-presenting tools). A fourth axis W, (with additional module and independent action), moves parallel to Z and carries the guide bushings. It is provided with an automatic changeover, (tool+bushing or just the bushing), incorporating simultaneously the pair of spindles.

Claims14

Dependent claims

A machine for drilling oil-holes in a crankshaft at various positions lengthwise and widthwise about a longitudinal axis through the crankshaft with perpendicular and angled directions with regards to the longitudinal axis, said machine comprising:

(a) a frame;
(b) a crankshaft holding means mounted on the frame for holding and maintaining the crankshaft in a horizontal position while allowing the crankshaft to rotate in two directions, one direction of rotation being concentric with the longitudinal axis of the crankshaft and the other direction of rotation being concentric with a vertical axis through the crankshaft holding means, said vertical axis through said crankshaft holding means not intersecting said longitudinal axis of said crankshaft;
and
(c) a crankshaft drilling means mounted on the frame adjacent to the crankshaft holding means for drilling holes in the crankshaft, the crankshaft drilling means having four independent axes of movement, a first axis which is horizontal and along which a tool is moved into penetrating engagement with the crankshaft, a second axis which is horizontal and along which the tool is moved in a lengthwise direction along the crankshaft, a third axis which is vertical and along which the tool is moved vertically, and a fourth axis which is horizontal and along which the tool is moved horizontally, parallel to the first axis.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 09/360,256Filed 23 Jul 1999
Priority: ES 990079719 Apr 1999
Granted: 20 Mar 2001
Term ends: Not estimatedThe source records don’t support an estimate.

Classification20 codes

B23Q 39/04
Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation: the sub-assemblies being…
B23B 39/161
Drilling machines with a plurality of working-spindles; Drilling automatons: with parallel work spindles
B23B 41/00
Boring or drilling machines or devices specially adapted for particular work
B23Q 1/445
Using particular mechanisms: using a first carriage for a smaller workspace mounted on a second carriage for a larger workspace, both carriages…