US 4,288,180 A · Apparatus for truing bolting surfaces of wheels and the like

Abstract

A machine for truing both the tire bead seats, and the side surfaces of a web of a wheel. The machine has a work supporting station with radially inwardly movable bead seat deforming jaws, and top and bottom machining heads on slides which move toward and away from the respective sides of the web of a wheel supported by the jaws. The axis of rotation of the machining heads are precisely concentric with the deforming jaws. The bottom machining head is used to chamfer the edges of bolting holes, and the top machining head is used to machine the bolting surfaces of the web. In the preferred embodiment, the bottom slide carries a plurality of gauging switches for contact with the web and for locating its welded position relative to the bead seats. The lower machine head also carries an adjustable gauge post which projects up past the jaws for contact by a gauging switch carried by the slide of the upper head. Upon actuation of the switch carried by the upper head, a predetermined depth of feed into the web is initiated to true the bolting surfaces. Angular misalignment is sensed by the gauging switches carried by the bottom head and the wheel rejected before machining if it is outside limits.

Claims25

Dependent claims

A machine for truing the opposite surfaces of tool deformable workpieces relative to their sides, comprising:

a frame having a work station intermediate the ends of said frame, chucking means at said work station for accurately positioning a tool deformable workpiece at generally right angles to said frame, a first slide on said frame for movement toward and away from one side of said workpiece, said first slide having tooling thereon for machining surfaces of the workpiece held by said chucking means, a second slide on said frame for movement toward and away from the opposite surfaces of a workpiece held by said chucking means, a cutter on said second slide rotatable about an axis paralleling the slide movement toward and away from the workpiece, and control means holding said tooling on one of said first and second slides in cutting position against the workpiece while causing said cutter on said other one of said slides to finish its cutting operation on the workpiece.

A machine for turing the opposite surfaces of workpieces relative to their sides, comprising:

a frame having a work station intermediate the ends of said frame, chucking means at said work station for accurately positioning a workpiece at generally right angles to said frame, a first slide on said frame for movement toward and away from one side of said workpiece, said first slide having tooling thereon for machining surfaces of the workpiece held by said chucking means, a second slide on said frame for movement toward and away from the opposite surface of a workpiece held by said chucking means, a plurality of gauges, each having a workpiece contacting actuator carried by one of said slides, each of said gauges having a first contact actuated upon a first predetermined movement of its actuator and a second contact actuated upon a further predetermined movement of its actuator, means completing machining of the workpiece if all of said first contacts are actuated before any of said second contacts are actuated and rejecting the workpiece if one of said second contacts are actuated before all of said first contacts are actuated, a gauge on said other one of said slides with an actuator that abuts a surface carried by said one of said slides, said one of said slides remaining stationary after all of its first contacts are actuated, and said other one of said slides terminating its machining movement into the workpiece after a predetermined amount of travel after its gauge actuator abuts said surface carried by said one of said slides.

Apparatus for truing a surface of workpieces and rejecting the workpieces whose surface is outside angular limits, said apparatus comprising:

clamping means for side surfaces of a workpiece which surfaces have an approximate predetermined relationship to the unfinished surface to be trued, a first machining head supported for movement toward and away from said unfinished surface of a workpiece held by said clamping means, a plurality of spaced apart sensing means carried by said machining head for contact with said unfinished surface of the workpiece, each of said sensing means having a first contact actuated after initial contact with said unfinished surface and a second contact actuated after a predetermined subsequent machining head movement toward the workpiece, said machining head performing work on said workpiece during movement between actuation of said first and second contacts, and control means connected to the first and second contacts of said plurality of sensing means and indicated rejection of the workpiece if all of said first contacts are not actuated before any of said second contacts are actuated.

In a machine having workpiece clamping jaws, top and bottom slides movable normal thereto for machining the top and bottom surfaces of workpieces held in the jaws, and an indexing table which raises, turns, and lowers to unload and load workpieces to the clamping jaws:

a feed actuator for moving the indexing table, a jaw actuator for closing and opening the jaws, a top slide actuator for moving the top slide between retracted and finish machined positions, a bottom slide actuator for moving the bottom slide between retracted and finish machined positions, a first retracted position switch for resetting the top slide actuator, a second retracted position switch for resetting the bottom slide actuator, a third clamping position switch for resetting the jaws actuator, a plurality of work sensing gauging switches on the bottom slide with each having first and second sequentially actuated contacts, an adjustable abutment carried by the bottom slide, fourth and fifth sequentially actuated switches carried by the top slide and actuated by said adjustable abutment, and a sixth switch actuated when the indexing table is in its lowered position, and whereby initial actuation of said sixth switch actuates the second actuator, initial actuation of said third switch actuates said top and bottom slides forwardly, actuation of the first sequential contacts of said gauging switches stops the advance of the bottom slide actuator, actuation of the fourth switch slows the forward advance of the top slide actuator for a machining operation, actuation of the sixth switch returns the actuators for the jaws and top and bottom slides to their retracted positions and produces an indexing operation of the indexing table.

Dependencies are inferred from the claim text.

Apparatus for truing bolting surfaces of wheels and the like

Life of this patent

Apparatus for truing bolting surfaces of wheels and the like

Life of this patent

Abstract

Claims25