Work holders – Holder mounted for movement – With plural means for changing holder positions
Patent
1983-06-16
1985-07-30
Schmidt, Frederick R.
Work holders
Holder mounted for movement
With plural means for changing holder positions
414563, 414 11, 269 76, 269 78, 269208, 269905, B23Q 104
Patent
active
045317208
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The following invention relates to a device for supporting workpieces in various positions for the purpose of machining, having a support member on which the workpiece is intended to rest and a base member which carries the support member.
BACKGROUND
In various applications there is a demand, e.g. in industry, for machines to hold workpieces in different positions in order to machine them. For this purpose there exists a so-called lifting table which ordinarily consists of a base with scissor-action adjustment links, imparting a raising and lowering movement to the table on which the workpiece is resting. This table, however, has a base which requires a comparatively large space and provides limited facilities for placing it in different positions.
TECHNICAL PROBLEM
The aim of the present invention is to produce a device enabling objects to be supported and moved from point to point within very wide limits.
SOLUTION
The said purpose can be achieved by a device in accordance with the present invention characterized in that the base member consists primarily of a fixed frame and a column which is expandable and tiltable by means of a first hinge device in the frame, said column carrying the support member and being equipped to raise and lower the support member by expansion and contraction respectively, in that the column is executed as a piston cylinder, the cylinder of which pivots in the frame and to the piston rod to which the support member is attached, and in that the support member is rotatable between different rotating positions around the longitudinal axis of the column in that, between the frame and the pillar is attached a maneuverable appliance designed to adjust the column between and to retain it in different swing positions with a lower end position, in which the support member is to a high degree obliquely positioned and can be connected by a section to a lower level, from which the workpiece can be lifted to a desired higher level, and in that the support-member exhibits, at least in its lower section in the oblique position, projecting carrier elements for transporting the workpiece while it is being lifted by the device and for retaining the workpiece in position in all positions of the support member.
BRIEF DESCRIPTION OF DRAWINGS
The invention is described below in relation to a preferred embodiment with reference to the drawings attached, where
FIG. 1 shows a side view of the device according to the invention in a downwards pivoted position;
FIG. 2 shows the device in accordance with the invention in a partly upwards pivoted but still oblique position and with dotted lines in a raised position in a support-member entering the device; and
FIG. 3 shows a plan of the invention in a vertically pivoted position.
BEST MODE OF CARRYING OUT THE INVENTION
As will be apparent from the figures, the device in accordance with the invention comprises a base-member 1 and a support-member 2, which is carried by the base-member. The support-member 2 is designed to carry workpieces of different types depending on the actual area of application. The device shown in the figures is specially designed to carry heavier workpieces for the purpose of their machining, for example stone blocks for grinding, engraving or chiselling for instance in the manufacture of gravestones. The base-member comprises a base plate 3 to which a solid frame 6 is attached by means of two fastening plates 4 and fastening screws 5. The base plate 3 can normally rest without any fastening devices on a foundation 37, e.g. a floor, shown by a dotted line. The solid frame consists of two vertical frame-members 7, located apart from each other, which give support to two oblique--and frame members 8 similarly placed apart from each other. These frame-members 7 and 8 are made in the form of e.g. box profiles. In the base section 1 there is additionally a column 9 which at the bottom can be swung by a hinge device 10 between the two obliquely-situated frame members 8. The hinge device 10 may be composed, for
REFERENCES:
patent: 2188433 (1940-01-01), Friese
patent: 2828870 (1958-04-01), Corley
patent: 2964293 (1960-12-01), Foth
patent: 3923167 (1975-12-01), Blankenbecker
patent: 4199299 (1980-04-01), Petitto et al.
Harry Soder & Son Stenhuggeri AB
Hartman Judy J.
Schmidt Frederick R.
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