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US 4,226,053 AGranted
Grinding apparatus
AssigneeInoue-Japax Research Incorporated
InventorKiyoshi Inoue
Life of this patent
Estimating the term…
Abstract
A grinding apparatus and method in which at least two grinding wheels are coaxially and rotatably supported on a common spindle and are juxtaposed with a worktable for a workpiece. A pulse motor on either the worktable or the spindle displaces the wheels and the workpiece relatively along a Z-axis orthogonal to the spindle axis and another pulse motor effects relative displacement of the wheels and worktable along an X-axis which is normal to the Z-axis and is codirectional with the spindle axis. Yet another motor serves to relatively displace the wheels and worktable along a Y-axis which is normal both to the Z-axis and to the X-axis while a numerical controller applies control-signal pulses to the Z-axis displacement and the X-axis displacement motors.
Claims6
A grinding apparatus comprising:
- at least two grinding wheels coaxially and rotatably supported on a common spindle including a first, rough-grinding wheel and a second, finish-grinding wheel having a different texture from that of the first wheel;
- a worktable for mounting a workpiece in juxtaposition with said wheels;
- means provided on one of said worktable and said spindle for displacing said wheels and said workpiece relatively along a Z-axis orthogonal to the spindle axis;
- means for effecting relative displacement of the wheels and worktable along an X-axis which is normal to said Z-axis and is codirectional with said spindle axis;
- means for effecting relative displacement of the wheels and worktable along a Y-axis which is normal to both said Z-axis and to said X-axis;
- and
- means for applying control-signal pulses to at least said Z-axis displacement means and said X-axis displacement means for stepping the relative displacement along the respective axes, the distance between said wheels being adjustable and said distance being memorized in said means for applying control signals, each of the displacements along the Z-axis and X-axis is effected with an increment of displacement of 1 to 5 microns per pulse.
4 more elements
A grinding apparatus comprising:
- at least two grinding wheels different from one another in roughness coaxially and rotatably supported on a common spindle;
- a worktable for mounting a workpiece in juxtaposition with said wheels;
- means provided on one of said worktables and said spindle for displacing said wheels and said workpiece relatively along a Z-axis orthogonal to the spindle axis;
- means for effecting relative displacement of the wheels and worktable along an X-axis which is normal to said Z-axis and is codirectional with said spindle axis;
- means for effecting relative displacement of the wheels and worktable along a Y-axis which is normal both to said Z-axis and to said X-axis;
- and
- means for applying control-signal pulses to at least said Z-axis displacement means and said X-axis displacement means for stepping the relative displacement along the respective axes, the distance between said wheels being adjustable and said distance being memorized in said means for applying control signals, each of the displacements along the Z-axis and X-axis is effected with an increment of displacement of 1 to 5 microns per pulse.
4 more elements
A grinding apparatus comprising:
- at least two differently sized grinding wheels coaxially and rotatably supported on a common spindle;
- a worktable for mounting a workpiece in juxtaposition with said wheels;
- means provided on one of said worktable and said spindle for displacing said wheels and said workpiece relatively along a Z-axis orthogonal to the spindle axis;
- means for effecting relative displacement of the wheels and worktable along an X-axis which is normal to said Z-axis and is codirectional with said spindle axis;
- means for effecting relative displacement of the wheels and worktable along a Y-axis which is normal to both said Z-axis and to said X-axis;
- and
- means for applying control-signal pulses to at least said Z-axis displacement means and said X-axis displacement means for stepping the relative displacement along the respective axes, the distance between said wheels being adjustable and said distance being memorized in said means for applying control signals, each of the displacements along the Z-axis and X-axis is effected with an increment of displacement of 1 to 5 microns per pulse.
4 more elements
A grinding apparatus comprising:
- at least two grinding wheels of different configurations coaxially and rotatably supported on a common spindle;
- a worktable for mounting a workpiece in juxtaposition with said wheels;
- means provided on one of said worktable and said spindle for displacing said wheels and said workpiece relatively along a Z-axis orthogonal to the spindle axis;
- means for effecting relative displacement of the wheels and worktable along an X-axis which is normal to said Z-axis and is codirectional with said spindle axis;
- means for effecting relative displacement of the wheels and worktable along a Y-axis which is normal to both said Z-axis and to said X-axis;
- and
- means for applying control-signal pulses to at least said Z-axis displacement means and said X-axis displacement means for stepping the relative displacement along the respective axes, the distance between said wheels being adjustable and said distance being memorized in said means for applying control signals, each of the displacements along the Z-axis and X-axis is effected with an increment of displacement of 1 to 5 microns per pulse.
4 more elements
A grinding apparatus comprising:
- at least two grinding wheels coaxially and rotatably supported on a common spindle;
- a worktable for mounting a workpiece in juxtaposition with said wheels;
- means provided on one of said worktable and said spindle for displacing said wheels and said workpiece relatively along a Z-axis orthogonal to the spindle axis;
- means for effecting displacement of the wheels and worktable along an X-axis which is normal to said Z-axis and is codirectional with said spindle axis;
- means for effecting relative displacement of the wheels and worktable along a Y-axis which is normal to both said Z-axis and to said X-axis;
- and
- means for applying control-signal pulses to at least said Z-axis displacement means and said X-axis displacement means for stepping the relative displacement along the respective axes,
- said wheels including a first wheel having a curved peripheral cross section and a second wheel having an angular peripheral cross section, the distance between said wheels being adjustable and said distance being memorized in said means for applying control signals, each of the displacements along the Z-axis and X-axis is effected with an increment of displacement of 1 to 5 microns per pulse.
5 more elements
Dependencies are inferred from the claim text.