Grinding machine for carbide cutting elements

A grinding machine for cutting a plurality of substantially parallel teeth along one side of a workpiece, comprising:

• a frame;
• a carraige swingably mounted on said frame for oscillation through a predetermined angle of approximately 60.degree. about a pivot axis which extends substantially horizontally;
• drive means drivingly connected to said carriage for causing back-and-forth swinging of said carriage through said predetermined angle;
• a grinding wheel having a tapered cutting edge formed on the periphery thereof so that said edge forms a V-shaped groove in the workpiece, said grinding wheel being supported on said carriage for rotation about a rotational axis which is spaced from said pivot axis, said rotational axis being disposed within a plane which passes through said pivot axis, and said rotational axis extending at an angle of approximately 10.degree. relative to said pivot axis;
• a driving device drivingly connected to said grinding wheel for rotating same;
• a support device for releasably supporting thereon a workpiece which is to be ground, said support device having clamping means for releasably holding said workpiece;
• a power device for moving said support device toward the grinding wheel for permitting grinding of said workpiece, said support device being movable toward said grinding wheel along a direction which extends at an angle of approximately 45.degree. relative to a cutting plane as defined by said grinding wheel during its swinging movement;
• and
• control means for causing said support device to be moved toward said grinding wheel in an intermittent steplike manner in synchronization with the oscillation of said grinding wheel, whereby said grinding wheel will sequentially form a plurality of substantially parallel grooves across said workpiece, which grooves define cutting teeth therebetween.

A grinding machine for cutting a plurality of substantially parallel teeth along one side of a workpiece, comprising:

• a frame;
• a carriage swingably mounted on said frame for oscillation through a predetermined angle about a pivot axis which extends substantially horizontally;
• drive means drivingly connected to said carriage for causing back-and-forth swinging of said carriage through said predetermined angle;
• a grinding wheel supported on said carriage for rotation about a rotational axis which is spaced from said pivot axis and extends at a small angle relative thereto, said grinding wheel having peripheral edge means defining a tapered cutting edge capable of forming a V-shaped groove in said workpiece as said grinding wheel moves thereacross;
• a driving device drivingly connected to said grinding wheel for rotating same;
• a support device for releasably supporting thereon a workpiece which is to be ground, said support device being movable toward said grinding wheel along a direction which extends at an angle of approximately 45.degree. relative to a cutting plane as defined by said grinding wheel during its swinging movement, said support device having clamping means for releasably holding said workpiece;
• guide means associated with said frame for slidably supporting said support device thereon for linear movement in a direction which extends at an acute angle relative to the front face of the grinding wheel;
• a power device for moving said support device linearly toward the grinding wheel for permitting grinding of said workpice;
• and
• control means coacting with said drive means and said power device for synchronizing the energization thereof and for causing said support device to be linearly and intermittently advanced toward the grinding wheel through a steplike distance during each reversal in the swinging direction of the carriage so that said grinding wheel cuts a new groove across the workpiece during the forward swing of the carriage and cuts a further new groove across said workpiece during the return swing of the carriage.

A grinding machine for cutting a plurality of substantially parallel teeth along one side of a workpiece, comprising:

• a frame;
• a carriage swingably mounted on said frame for oscillation through a predetermined angle about a pivot axis;
• drive means drivingly connected to said carriage for causing back-and-forth swinging of said carriage through said predetermined angle;
• a grinding wheel supported on said carriage for rotation about a rotational axis which is spaced from said pivot axis, said grinding wheel having a cutting edge capable of forming a groove in said workpiece as said grinding wheel moves thereacross;
• a driving device drivingly connected to said grinding wheel for rotating same;
• a support device for releasably supporting thereon a workpiece which is to be ground, said support device including a slide member which is slidably supported on said frame for linear movement along a selected direction which extends at an acute angle relative to the front face of said grinding wheel;
• said support device also including a workpiece holding member hingedly mounted on said slide member and swingable between first and second angularly spaced positions, said workpiece holding member when in said first position being disposed closely adjacent a forward end of said slide member so that said workpiece is positioned for engagement with said grinding wheel during the linear advance of said support device, said workpiece holding member when in said second position being swung outwardly away from said slide member for permitting a finished workpiece to be removed therefrom and a new workpiece to be mounted thereon, said workpiece holding member having releasable clamping means associated therewith for releasably holding said workpiece;
• a power device for linearly moving said slide member toward the grinding wheel for permitting grinding of said workpiece;
• and
• control means for causing said support device to be moved toward said grinding wheel in an intermittent steplike manner in synchronization with the oscillation of said grinding wheel, whereby said grinding wheel will sequentially form a plurality of substantially parallel grooves across said workpiece, which grooves define cutting teeth therebetween.