US Patent: 2,296,573
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| Mounting and Drive Means for Milling Machines
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Patentee:
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| James H. Richards (exact or similar names) - Glendale, Los Angeles County, CA |
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Patent Dates:
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| Applied: |
Jan. 28, 1941 |
| Granted: |
Sep. 22, 1942 |
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Joel Havens
"Vintage Machinery" entry for Fray Machine Tool Company
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Description: |
| Luther T. Mack - patent attorney
Original application 16 Feb 1940. Divided and this application 28 Jan 1941.
This invention relates to mounting and drive means for milling attachments and has for an object the provision, first, of an improved means for detachably and adjustably supporting an allangle milling attachment, together with its drive means on the overarm of a standard milling machine, with a range of adjustment of 360 degrees about the axis of the overarm as well as longitudinally on the overarm to a substantial extent, whereby the complete attachment may be bodily adjusted while the several elements of the attachment may be individually adjusted.
A secondary object is to provide for said attachment a comprehensive power transmitting mechanism for selectively operating the tool spindle of the attachment at various speeds, including back gearing devices and a motor, all of which elements are embodied in the attachment which is, as aforesaid, supported on the overarm of a milling machine.
An important feature of my invention consists in the provision of a sturdy heavy duty attachment together with improved means for rigidly supporting the attachment for accurate precision work so as to render the attachment effective for practically all of the many operations performed by milling machines, and thereby combining in a single attachment many of the features usually provided in separate devices attachable to a milling machine.
A further object is to provide means for mounting a milling attachment so that it may be bodily disposed and held in an out-of-the-way position when not in use and when the machine is being used for purposes other than those adapted to be performed through the instrumentality of my attachment.
Another object is to provide certain improvements in the form and structure of the tool spindle support and the mounting means therefor in the provision of a closely coupled joint between said mounting and said spindle support so that the entire attachment may be swung about the axis of the overarm and also about an axis at right angles thereto to an extent of 360 degrees in each case in order that the tool may be accurately positioned and supported at any desired angle relative to the work without vibration during the operation of the attachment.
In detail, an object is to provide a mounting for the attachment and a separate support for the tool spindle, which members have engageable flat bearing faces of substantial area for providing a maximum of rigidity, the bearing face on the mounting being spaced from the axis of the overarm on which it is held at a distance not greater than the diameter of said overarm, and the bearing face on said spindle support being spaced from the axis of the tool spindle a distance not greater than the diameter of the spindle support. In addition, one of said bearing faces is provided with an annular reentrant groove concentric with the axis of the overarm and the other bearing face has a plurality of bolts or screws forming attaching members by means of which the mounting and spindle support are clamped together at desired angles, said attaching members having heads interlocked with said groove, and being rotatable in said groove when the attachment is adjusted. |
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