Abstract

A workholder with a sleeve carried by a body and providing at least in part a circumferentially continuous fluid chamber between them and at least two circumferentially spaced apart locators carried by the body axially over the sleeve and projecting radially of the sleeve. A pressurized fluid in the chamber can change the diameter of the sleeve to move the locators generally radially relative to the body into firm engagement with a workpiece so that it is carried by the workholder. The locators may be received in part in a collar received at least in part axially over the sleeve with a portion of each locator projecting radially of the collar.

IPC Classes  ?

• B23B 31/30 - Chucks characterised by features relating primarily to remote control of the gripping means using fluid-pressure means in the chuck
• B23B 31/40 - Expansion mandrels

Goods & Services

Machine parts, namely, work holding fixture for precision machining applications.

Goods & Services

Machine parts, namely, work holding fixture for precision machining applications Hand-operated tool holders

Goods & Services

(1) Machine parts, namely, work holding fixtures for precision machining applications namely arbors and chucks; hand-operated tool holders and hand-operated workpiece holders namely arbors and chucks.

Goods & Services

Machine parts, namely, work holding fixtures for precision machining applications Hand-operated tool holders and hand-operated workpiece holders

Goods & Services

Machine parts, namely, work holding fixtures for precision machining applications Hand-operated tool holders and hand-operated workpiece holders

Abstract

A stepped collet includes a first section of generally hollow cylindrical shape having a first outer diameter and an inner diameter, a wall extending radially inwardly from an outboard end of the first section, and a second section of generally split cylindrical shape cantilevered from the wall and having a second outer diameter smaller than the first outer diameter.

IPC Classes  ?

• B23B 31/40 - Expansion mandrels
• B23B 31/20 - Longitudinally-split sleeves, e.g. collet chucks

Abstract

A workholding apparatus includes a body, and a workholding sleeve composed of metal and carried by the body. A fluid chamber receives a fluid between the body and the workholding sleeve. Under fluid pressure, the sleeve is radially displaceable and recoverable to a high degree. For example, when displaced under fluid pressure, the sleeve experiences substantially complete and repeatable strain recovery of at least about 2% of its overall cross-sectional area. Preferably, the sleeve is composed of Nitinol.

IPC Classes  ?

• B23B 31/00 - ChucksExpansion mandrelsAdaptations thereof for remote control

Abstract

A workholder to hold a workpiece, including a main body partially defining a fluid chamber, and a bladder carried by the main body with an interference fit, further defining the fluid chamber, and composed of an 80 to 100 durometer Shore A scale hardness polymer of a 12:1 to 18:1 diameter-to-wall-thickness ratio. Annular seals may further define the fluid chamber, and are disposed radially between the bladder and main body and axially adjacent the fluid chamber, and are composed of a 60 to 80 durometer Shore A scale hardness polymer. A collet is carried and driven by the bladder for gripping engagement with the workpiece.

IPC Classes  ?

• B23B 31/30 - Chucks characterised by features relating primarily to remote control of the gripping means using fluid-pressure means in the chuck
• B23B 31/40 - Expansion mandrels
• B23B 31/20 - Longitudinally-split sleeves, e.g. collet chucks

Goods & Services

Machine tool holders, machine tool holders for workpieces, machine cutting tool holders and non-electrical adapters for use in joining workpiece holders and machine tool holders with cutting machine tools

Abstract

A workholding apparatus includes a body, and a workholding sleeve composed of metal and carried by the body. A fluid chamber receives a fluid between the body and the workholding sleeve. Under fluid pressure, the sleeve is radially displaceable and recoverable to a high degree. For example, the sleeve is radially displaceable to at least one percent in diameter with runout within about 0.03% of its diameter, and after release of fluid pressure repeatably recovers to within about 0.01% of its original relaxed diameter. In another example, when displaced under fluid pressure, the sleeve experiences substantially complete and repeatable strain recovery of at least about 2% of its overall cross-sectional area. Preferably, the sleeve is composed of Nitinol.

IPC Classes  ?

• B23B 31/00 - ChucksExpansion mandrelsAdaptations thereof for remote control

Abstract

A workholding apparatus includes a body, and a workholding sleeve composed of metal and carried by the body. A fluid chamber receives a fluid between the body and the workholding sleeve. Under fluid pressure, the sleeve is radially displaceable and recoverable to a high degree. For example, the sleeve is radially displaceable to at least one percent in diameter with runout within about 0.03% of its diameter, and after release of fluid pressure repeatably recovers to within about 0.01% of its original relaxed diameter. In another example, when displaced under fluid pressure, the sleeve experiences substantially complete and repeatable strain recovery of at least about 2% of its overall cross-sectional area. Preferably, the sleeve is composed of Nitinol.

IPC Classes  ?

• B23B 31/40 - Expansion mandrels
• B23Q 3/00 - Devices holding, supporting, or positioning, work or tools, of a kind normally removable from the machine
• B23Q 3/14 - Mandrels in general

Abstract

A workpiece holding apparatus comprises a body, a bladder carried by the body, and a sleeve that is carried by the bladder. A fluid chamber is at least partially defined by the body and the bladder for containing a fluid therein. The bladder comprises at least one first polymer-containing section composed of a first polymer-containing material and is adapted to radially deflect the sleeve into engagement with the workpiece. The bladder further comprises at least one second polymer-containing section disposed adjacent to the first polymer-containing section(s) and is composed of a second polymer-containing material that is less flexible than the first polymer-containing material and where at least a portion of the second polymer-containing section(s) are constructed to engage elastomeric seals of the body of the workpiece holding apparatus to thereby seal pressurized fluid within the fluid chamber.

IPC Classes  ?

• B23B 31/30 - Chucks characterised by features relating primarily to remote control of the gripping means using fluid-pressure means in the chuck

Abstract

A workpiece holding apparatus comprises a body, a cartridge assembly carried by the body and a sleeve. The cartridge assembly comprises at least one sealing member and a bladder supported by a retainer and at least partially defining a fluid chamber that houses a pressurized fluid. At least one annular seal is axially provided between the bladder and the sealing member(s). The annular seal(s) correspond with a sealing member, which engages the annular seal(s) upon adjustment of the sealing member. A seal is formed between the sealing member and the bladder that prevents fluid from escaping the fluid chamber. The annular, cylindrical sleeve engages a workpiece when the fluid chamber houses a pressurized fluid, which exerts a radial force against the bladder to the sleeve and into engagement with the workpiece.

IPC Classes  ?

• B23B 31/30 - Chucks characterised by features relating primarily to remote control of the gripping means using fluid-pressure means in the chuck

Abstract

A mechanically actuated workpiece holding apparatus comprising a collet at least partially composed of a plastic material. The collet may include cantilevered leaves and may be a plastic coating over a metal substrate.

IPC Classes  ?

• B23B 31/20 - Longitudinally-split sleeves, e.g. collet chucks

Abstract

A workholding apparatus including a body and a drive member carried by the body, so that the drive member and body partially define a fluid chamber therebetween for containing a fluid. The drive member includes an annular flange that axially abuts and that attaches to the body to resist torsional twisting of the drive member relative to the body. A driven member is also carried by the body and includes multiple displacement reliefs therein. Interengagement features are provided between the driven member and other components of the workholding apparatus, such as the drive member, to resist torsional twisting of the driven member.

IPC Classes  ?

• B23B 5/22 - Holding the workpiece in the machine, e.g. chucking devices
• B23B 31/10 - Chucks characterised by the retaining or gripping devices or their immediate operating means

Goods & Services

machine tool holders and adapters for rotary cutting tools

Goods & Services

WORK HOLDING ARBORS AND CHUCKS