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US 4,010,502 AGranted
Apparatus for edge processing work and particularly non-circular work
AssigneeCircle Machine Co., Inc.
InventorsRichard D. Cushing, Alfred E. Beck, Jr.
Life of this patent
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AssigneeCircle Machine Co., Inc.
InventorsRichard D. Cushing, Alfred E. Beck, Jr.
Estimating the term…
Apparatus for processing the margins of work, both circular and non-circular, has a rotatable work holder provided with a clamping member to clamp work against a template. The processing is typically that of bringing the work to the size and shape established by the template and is effected by at least one tool. The disclosed apparatus has a pair of tools, both rotatable and each having a different function and the tools and their drive are carried by structure provided with means to reciprocate it between an inoperative position and a position in which the tools are in engagement with the periphery of the work. When the work is non-circular, the work holder and its drive so turn the work that its periphery advances into contact with the tools at a controlled rate. When work is to be processed without turning it two or more times, it is so turned that the zone first engaged by the tools is again engaged by them before the work holder is stopped in its predetermined starting position and, in the disclosed embodiment, the work holder is first moved to a predetermined minor extent in a reverse direction and is then rotated in a forward direction until the predetermined starting position is twice reached. The tool unit, its drive and that for the work holder are within a cabinet having a door behind which the tool unit is located. Control means provide that, first, the work is clamped in the work holder and, then, the door opened, the work holder rotated and the tool unit advanced into contact with the work. After the work has been processed, the sequence is reversed. A work locator is shown for use when it is desirable to ensure that the work is accurately positioned relative to the template before it is clamped thereto.
Apparatus for removing material from the periphery of work to impart thereto a predetermined, non-circular size and shape, said apparatus comprising a rotatable work holder including a non-circular template of at least the wanted shape, means operable to remove material from the periphery of the work including at least one tool portion operable to remove material from the periphery of the work and a second portion engageable by the periphery of the template when the unwanted material is removed from the work, a drive operable to so rotate said work holder that the periphery of the non-circular work advances into contact with the tool at a controlled rate, said work holder drive including driving means and a driven member rotatable with the work holder and including a non-circular wall portion that is of a shape to effect said rate and with which the driving means is continuously engaged, said driving means in engagement with said wall portion and means operable to permit relative movement between said work holder and the tool as the work holder turns, the driven member advancing relative to the tool at a constant rate and the rate at which the template advances relative to the tool depending on any difference between its shape and that of said wall portion.
Apparatus for removing material from the periphery of work to impart thereto a predetermined size and shape, said apparatus comprising a rotatable work holder including a template of at least the wanted shape, means operable to remove material from the periphery of the work including at least one first portion operable to remove material from the work and a second portion engageable with the template when the unwanted material has been removed, a reversible drive to rotate said work holder with the tool in engagement with the periphery of the work, first and second means in control of said work holder drive to control the direction and extent of work holder rotation, one of said control means operable to initiate work holder movement, one of said control means operable to effect predetermined short movement of the work holder in a reverse direction and the other to effect the movement of the work holder in a forward direction, and third control means operable to halt the work holder in a predetermined starting position after it has turned enough more than 360.degree. to bring said work holder into said position for a second time.
Apparatus for removing material from the periphery of work to impart thereto a predetermined size and shape, said apparatus comprising a rotatable holder including a template of at least an approximation of the wanted shape and means to clamp the work thereto, a drive to rotate said holder including an electric motor, first control means operable to effect the rotation of said work holder, at least one tool, said tool having a first portion operable to remove material from the article and a second portion engageable with the periphery of the template when the unwanted material is removed from the article, a support for said tool, and tool positioning means operable to reciprocate said support between an inoperative position in which the tool is remote from the work holder and an operative position in which the second tool portion may engage the periphery of the template when the unwanted material is removed from the article by the first tool portion, second control means operable to control said tool positioning means to effect the operative and inoperative tool positions, starting means operable to effect the operation of the first and second control means to effect work holder rotation with the tool in engagement with the work, and stopping means operative to effect the operation of said first and second control means to halt the turning of the work holder in a predetermined position and to return the tool to its inoperative position upon the removal of the unwanted material from the work on predetermined rotation of the work holder.
Apparatus for removing material from the periphery of work, said apparatus including a rotatable work holder provided with a template, a drive for said work holder including at least one fluid pressure operated unit operable in a first position to connect said drive to said work holder and in a second position to disengage said drive therefrom, at least one tool, tool positioning means including a fluid pressure operated unit operable in a first position to move said tool into engagement with the work and in a second position to space the tool therefrom, a clamp, a fluid pressure operated unit connected to the clamp and operable in a first position to move it into clamping engagement with work supported by the work holder and in a second position in which the work is released, means to deliver fluid under pressure to said units and including a valve in control of the drive unit and a valve in control of the tool positioning unit, each valve having two positions of use, one for each position of the unit it controls, first and second control means each including a control member, the first control means when in operation, effecting the first position of the clamp operating unit and rendering the second control means operative, the second control means, when in operation effecting the position of the valve in control of the drive unit that effects the first position thereof and the position of the valve in control of the unit of the tool positioning means that effects the first position thereof, means operated by predetermined rotation of the work holder to reset the valve in control of the drive unit to effect the second position thereof thereby to stop the work holder in a predetermined position, to reset the valve in control of the tool positioning unit to effect the second position thereof thereby to cause the tool to be positioned away from the work, and to effect the second position of the clamp operating unit thereby to cause the release of the clamped work.
Apparatus for removing material from the periphery of work, said apparatus including a rotatable work holder provided with a template, a drive for said work holder including at least one fluid pressure operated unit operable to connect said drive to said work holder, at least one tool, tool positioning means including a fluid pressure operated unit to move said tool into and out of engagement with the work, a clamp, a fluid pressure operated unit connected to the clamp to move it into and out of clamping engagement with work supported by the work holder, means to deliver fluid under pressure to said units and including a first valve for the drive unit and a second valve for the tool positioning unit, each of said valves having two positions of use, means to deliver air under pressure to said valves including a first conduit provided with first and second normally closed control valves and connected to the valves for the drive unit and the tool positioning unit and operable to set them to connect the work holder to the drive and to position the tool in engagement with the work, and a branch between said control members in communication with the clamp operating unit and operable to deliver work clamping pressure thereto when the first control valve is operated, air under pressure then being delivered to set said two-position valves when the second control valve is operated, and means operated by said work holder on predetermined rotation thereof to deliver air under pressure to said two position valves to reset them and also to operate the unit in control of the clamp to effect the release of the clamped work.
Apparatus for shaping work by removing material from the periphery thereof, said apparatus including a rotatable work holder including a template of at least the wanted shape and means operable to clamp the work to the template, means to rotate the work holder with the work clamped thereto, at least one tool having a first, material-removing portion engageable with the work at lest when the work holder is turning and a second portion engageable with the periphery of the template when the unwanted material has been removed from the work by the first portion, and a work locator attached to the apparatus for movement between a work receiving and a predetermined position relative to the work template, said locator including means engageable with the work holder to establish said predetermined position and a work receiver, said receiver including a pair of end members and at least one intermediate member, each of said members projecting towards the work holder and including a first portion engageable with the periphery of the work and a second portion disposed then to underlie marginal material of the work that is to be removed and hold the work in a position to overlie the template, said end members adjustable towards and away from each other and said intermediate member adjustable towards and away from the work holder thereby to enable the members to be adjusted to receive work of a pedetermined size and shape with the end members receiving the work between them with their first portions in engagement with the periphery thereof and parts of the work resting on their second portions and said intermediate member so positioned that its first portion engages the periphery of the work with a part thereof resting on its second portion, the second portions of the members so spaced relative to each other that the received work is stable with the axis on which it should be turned coincident with the axis of rotation of the template in said predetermined position of the locator.
Dependencies are inferred from the claim text.