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US 9,962,812 B2Granted
Centric clamping device
AssigneeGressel AG
InventorMarcel Schlüssel
Life of this patent
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Abstract
A centric clamping device, which contains a main body, two clamping jaws, guided so they can be displaced on the main body, and an adjusting spindle, supported by a spindle bearing so that it can rotate on the main body for the opposing adjustment of the two clamping jaws. A high-precision spindle bearing, optimally protected against soiling, is attained in that the spindle bearing is located in a bearing block and two bearing sleeves, which can be adjusted axially within the bearing block.
Claims18
A centric clamping device comprising:
- a main body,
- first and second clamping jaws, guided so the first and second clamping jaws are displaceable on the main body, and
- an adjusting spindle, supported by a spindle bearing so the spindle is rotatable on the main body for opposing adjustment of the first and second clamping jaws,
- wherein the spindle bearing is located in a bearing block and contains two bearing sleeves that are adjustable axially within the bearing block,
- wherein the first clamping jaw is positioned on a first slider and the second clamping jaw is positioned on a second slider, each of the first and second sliders guided so that the first and second sliders are displaceable in the main body,
- wherein each of the first and second sliders has an affixed cover movable with the respective slider and extending centrally to overlie and move over the bearing block and the adjusting spindle with the bearing block covering a central portion of the adjusting spindle and the first and second sliders covering end portions of the adjusting spindle as the first and second sliders are displaced, so that the adjusting spindle positioned within the main body is covered, thereby protecting the adjusting spindle from debris.
3 more elements
A centric clamping device comprising:
- a main body having a longitudinal recess and a spindle bearing block positioned within the longitudinal recess;
- first and second movable clamping elements each having a threaded bore;
- an adjusting spindle,
- the spindle having external threads,
- the threaded bore of each of the first and second movable clamping elements threaded onto the spindle,
- the spindle rotatable in a first direction to move the first and second clamping elements towards each other, and in a second direction opposite to the first direction to move the first and second clamping elements away from each other,
- the spindle including a bearing forming opposed side surfaces,
- the spindle bearing supported by the spindle bearing block to enable the spindle to be rotatable within the main body;
- two bearing sleeves
- each positioned about the spindle,
- each having external threads mateable with respect to the main body to enable movement of the respective bearing sleeve along a longitudinal axis of the longitudinal recess of the body,
- each having a shoulder-shaped bearing surface positioned to align with and be contactable with one of the opposed sides of the spindle bearing,
- the bearing sleeves respectively threadably rotatable in the same radial direction to contact one or more of the opposed sides of the spindle bearing to move the spindle bearing and thereby the spindle along the direction of an axis of the spindle,
- the bearing sleeves respectively threadably rotatable in opposite radial directions to thereby adjust a tension of the contact of each of the bearing sleeves with a respective opposed side of the spindle bearing to thereby pretension an engagement of the spindle with respect to the bearing block.
11 more elements
Dependencies are inferred from the claim text.