Work holders – Holder mounted for movement – With plural means for changing holder positions
Patent
1983-12-08
1985-12-17
Schmidt, Frederick R.
Work holders
Holder mounted for movement
With plural means for changing holder positions
269 72, 269 84, B23Q 318
Patent
active
045588538
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to an adjustable clamp for holding objects securely in position comprising at least one arm which exhibits one articulated arrangement arranged at each of the two ends of the arm, said articulated arrangement exhibiting two pivot pins arranged at an angle to each other, whereby said object is so arranged as to be held securely by means of a clamping arrangement attached to the articulated arrangement.
TECHNICAL PROBLEM
The purpose of the present invention is to propose an adjustable clamp by means of which objects may be set in a large number of different positions and may be aligned in different directions. Examples of such objects include so-called stops which are intended to hold workpieces in position during machining operations, for example when drilling at a pre-determined point. For this purpose, the clamp is adjusted in conjunction with the stop after the first workpiece has been placed in the desired position, whereupon the stop is tightened against a suitable edge or surface. Once this has been done, a series of identical workpieces can be located in identical positions enabling a repeatable machining operation to be performed.
SOLUTION
The aforementioned purpose is achieved by means of a clamp which is characterized in that each articulated device exhibits, free to move in relation to the arm, an articulated body with a curved articulated surface which is in contact with and is so arranged as to move relative to a corresponding curved articulated surface in an articulated component attached to the ends of the arm and with a flat articulated surface which is in contact with and is so arranged as to be capable of being turned relative to a corresponding flat surface, in that one of the pivot pins in each articulated arrangement extends through the articulated component and the articulated body and forms a releasable locking arrangement for the arm and for the clamping arrangement by being adjusted between a locked position in which the articulated surfaces are tightly clamped to each other in a pre-set position between said pivot pins and a released position in which the articulated surfaces are capable of moving relative to each other, and in that the articulated components of the arm are executed in the form of hook-like components, each of which is open to the side in its own particular direction relative to the longitudinal direction of the arm.
DESCRIPTION OF THE DRAWINGS
The invention is described below in greater detail in relation to a couple of typical embodiments with reference to the accompanying drawings, in which
FIG. 1 shows a side view of the clamp in accordance with the invention in a first typical embodiment, shown in two different positions;
FIG. 2 shows a view from above of the clamp in accordance with FIG. 1, shown in two different positions;
FIG. 3 and FIG. 4 show two perspective views of the clamp in accordance with FIG. 1, whilst
FIG. 5 shows a partical application in conjunction with a drilling operation.
FIG. 6 shows the clamp in a second embodiment in two different positions, and
FIG. 7 and FIG. 8 show the clamp in accordance with FIG. 6 in two different perspective views.
BEST MOST OF CARRYING OUT THE INVENTION
The clamp in accordance with the first embodiment illustrated in FIGS. 1-5 consists of an arm 1, each of the ends 2, 3 of which is provided with its own articulated arrangement 4, 5. Each and every one of the articulated arrangements 4, 5 exhibits a first pivot pin 6, 7 which is horizontal in the typical embodiment shown, and a second pivot pin 8, 9 which is vertical in the typical embodiment shown with regard to one of the articulated arrangements 4 but which is capable of being set to various angles along various vertical planes with regard to the second articulated arrangement 5. The first pivot pin 6, 7 in the two articulated arrangements 4, 5 is executed in the form of a cylindrical body, whereas the second pivot pin 8, 9 is executed in the form of a screw which in the typical embodiment shown in one
REFERENCES:
patent: 2444727 (1948-07-01), Bush
patent: 2495065 (1950-01-01), Hull
patent: 3089478 (1963-05-01), Jones
patent: 3103352 (1963-09-01), Steffen
patent: 4253649 (1981-03-01), Hewson
patent: 4275872 (1981-06-01), Mullis
patent: 4500077 (1985-02-01), Coxon
Janerstal Tommy
Yngvesson Sven H.
Partille Tool Aktiebolag
Schad Steven P.
Schmidt Frederick R.
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