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US 8,152,151 B2Granted
Clamping fixture including a chuck and a workpiece pallet releasably located thereon
AssigneeErowa AG
InventorBruno Sandmeier
Life of this patent
Estimating the term…
Abstract
A clamping fixture comprises a chuck (1) and a workpiece pallet (22) releasably located thereon. The chuck (1) is provided with a clamping mechanism for locating the workpiece pallet (22). The clamping mechanism comprises a plurality of clamping members configured as plungers (10). The workpiece pallet (22) comprises a clamping surface (28a) running essentially along its shell surface (26) for surface contacting the plungers (10) by its front part (12) provided with a compression surface (13) during clamping.
Claims25
A clamping fixture including:
- a chuck (1) having a central aperture (4) extending therethrough;
- a base plate (5) defining supporting surfaces (7) disposed within the bottom of said central aperture (4) in said chuck (1);
- and
- a workpiece pallet (22) releasably located in the central aperture (4) of the chuck (1),
- wherein the chuck (1) is provided with a clamping mechanism for locating the workpiece pallet (22),
- wherein the clamping mechanism includes a plurality of clamping members configured as plungers (10) having a front part (12) provided with a compression surface (13) for surface contact with a clamping surface (28a) of the workpiece pallet (22),
- wherein the clamping surface (28a) runs essentially along a shell surface (26) of the workpiece pallet (22) and is configured to contact the plungers (10) during clamping,
- wherein workpiece pallet (22) comprises at its underside flat contact surfaces (25) which come into contact with said supporting surfaces (7) when the workpiece pallet (22) is clamped to the chuck (1) in a Z direction, and
- wherein the workpiece pallet (22) is provided with a through bore (29) to mount and locate a workpiece or a tool to the workpiece pallet.
6 more elements
A clamping fixture including:
- a chuck (1);
- and
- a workpiece pallet (22) releasably located thereon and including a clamping surface (28a),
- wherein the chuck (1) is provided with a clamping mechanism for locating the workpiece pallet (22),
- wherein the clamping mechanism includes a plurality of clamping members configured as plungers (10) having a front part (12) provided with a compression surface (13) for surface contact with the clamping surface (28a),
- wherein the clamping surface (28a) runs essentially along a shell surface (26) of the workpiece pallet (22) and is configured to contact the plungers (10) during clamping,
- wherein the workpiece pallet (22a) is provided at a top side thereof with a circumferential collar (33) which protrudes beyond the shell surface of the workpiece pallet (22a) radially,
- wherein a seal (34) is provided at a top side of the chuck (1a), and
- wherein said seal is arranged to come into contact with the underside of the circumferential collar (33) during clamping.
6 more elements
A clamping fixture including:
- a chuck (1);
- a workpiece pallet (22) releasably located thereon and including a clamping surface (28a);
- and
- a base body (2),
- wherein the chuck (1) is provided with a clamping mechanism for locating the workpiece pallet (22),
- wherein the clamping mechanism includes a plurality of clamping members configured as plungers (10) having a front part (12) provided with a compression surface (13) for surface contact with the clamping surface (28a),
- wherein the clamping surface (28a) runs essentially along a shell surface (26) of the workpiece pallet (22) and is configured to contact the plungers (10) during clamping,
- wherein the chuck includes a solid liner (3) having a surface for supporting the plungers (10) in a Z direction,
- wherein the base body (2) includes a base part (2a) extending substantially radially, and
- wherein said liner (3) is provided with a circumferential shoulder (15) supported in the tensile loading direction by surface contact with an underside of said base part (2a) of the base body (2).
7 more elements
A clamping fixture comprising:
- a chuck;
- and
- a workpiece pallet releasably located thereon,
- wherein the chuck includes a clamping mechanism for locating the workpiece pallet,
- wherein the clamping mechanism includes a plurality of clamping members configured as plungers, the plungers having a front part provided with a compression surface for surface contact with a clamping surface of the workpiece pallet,
- wherein the workpiece pallet comprises a clamping surface running essentially along its shell surface for contacting the plungers during clamping, and
- wherein said compression surface contacts more than half of the clamping surface during clamping of the workpiece pallet.
4 more elements
Dependencies are inferred from the claim text.