A workholding system includes an adjustable vise, a fixed vise, and a fixture plate. The adjustable vise and the fixed vise are secured to the fixture plate using a T-slot and a fastener. The system includes multiple precision locating surfaces, including interchangeable precision locating surfaces, to secure a working part. In one embodiment, a T-slot fastener facilitates the creation of an entire workholding system that facilitates the rapid installation of studs into receiving members. The fastener includes a quarter turn fastener used in workholding applications to quickly hold and release components of the system, such as tooling, parts, and plates. The compact design of the system makes possible the ability to insert the quarter turn fastener into a device that can fit into a T-slot and still have considerable holding power. The system is lower in cost than other solutions.

A workholding system includes an adjustable vise, a fixed vise, and a fixture plate. The adjustable vise and the fixed vise are secured to the fixture plate using a T-slot and a fastener. The system includes multiple precision locating surfaces, including interchangeable precision locating surfaces, to secure a working part. In one embodiment, a T-slot fastener facilitates the creation of an entire workholding system that facilitates the rapid installation of studs into receiving members. The fastener includes a quarter turn fastener used in workholding applications to quickly hold and release components of the system, such as tooling, parts, and plates. The compact design of the system makes possible the ability to insert the quarter turn fastener into a device that can fit into a T-slot and still have considerable holding power. The system is lower in cost than other solutions.

Clamping or gripping device with a main body, with guide portions provided on the main body, with jaws which are movable along the guide portions in a direction of movement, which can be moved between an inner stroke position and an outer end-of-stroke position, the jaws each having a row-of-teeth portion with, in each case, a length extending in the direction of movement, and with multiple pinions, the axes of rotation of which lie in a plane lying parallel to the respective row-of-teeth portions, the pinions interacting with the respective row-of-teeth portion to drive the jaws.

A centering device comprises a base, a first jaw assembly operably engaged with the base, and a second jaw assembly operably engaged with the base. The first jaw assembly is configured to move longitudinally along the base, and the second jaw assembly is also configured to move longitudinally along the base. The centering device also includes an actuation assembly that operably engages with the base, the first jaw assembly, and the second jaw assembly. The centering device also includes a drive assembly operably engaged with the first jaw assembly. The drive assembly is operable to move the first jaw assembly longitudinally along the base. The movement of the first jaw assembly longitudinally along the base activates the actuation assembly, and the second jaw assembly is caused to move longitudinally along the base via the actuation assembly.

A centering device comprises a base, a first jaw assembly operably engaged with the base, and a second jaw assembly operably engaged with the base. The first jaw assembly is configured to move longitudinally along the base, and the second jaw assembly is also configured to move longitudinally along the base. The centering device also includes an actuation assembly that operably engages with the base, the first jaw assembly, and the second jaw assembly. The centering device also includes a drive assembly operably engaged with the first jaw assembly. The drive assembly is operable to move the first jaw assembly longitudinally along the base. The movement of the first jaw assembly longitudinally along the base activates the actuation assembly, and the second jaw assembly is caused to move longitudinally along the base via the actuation assembly.

A positioning structure of a clamper of a threading machine for a racket contains: a rack, an engagement protrusion, an operation member, and two springs. A fixing holder is erected on a support plate of the threading machine, and the rack includes multiple first teeth, the fixing holder includes an accommodation chamber with an opening. The engagement protrusion is received in the accommodation chamber and includes a toothed extension on which multiple second teeth are formed. The engagement protrusion further includes a recess and an abutting fence. The operation member includes a drive portion and a push portion. The two springs are mounted on a top of the engagement protrusion, and two ends of each spring abut against the engagement protrusion and the fixing holder respectively so that each spring forces the engagement protrusion to engage with the rack.

A positioning structure of a clamper of a threading machine for a racket contains: a rack, an engagement protrusion, an operation member, and two springs. A fixing holder is erected on a support plate of the threading machine, and the rack includes multiple first teeth, the fixing holder includes an accommodation chamber with an opening. The engagement protrusion is received in the accommodation chamber and includes a toothed extension on which multiple second teeth are formed. The engagement protrusion further includes a recess and an abutting fence. The operation member includes a drive portion and a push portion. The two springs are mounted on a top of the engagement protrusion, and two ends of each spring abut against the engagement protrusion and the fixing holder respectively so that each spring forces the engagement protrusion to engage with the rack.

This disclosure is directed to a method for forming and using one or more workpiece securing devices to reduce the deflections and vibrations of the workpiece during machining, as well as the time and labor associated with machining multiple workpieces. The method includes depositing material onto a surface of a movable jaw of a vise to form a first jaw protrusion and depositing material onto a surface of a stationary jaw of the vise to form a second jaw protrusion. A workpiece can be secured between the first and second jaw protrusions and then can be machined.

A device to secure and hold an ammunition magazine includes a block using a channel, a receiving ramp, and a slider to accommodate a variety of sizes for the magazine. The block can be made of metal or plastic. The block includes a front edge and a back edge. The front edge includes an opening for the receiving ramp. The metal block also includes side edges. A first side edge includes a machine hole to receive a thrust bolt having a knob that turns to move the slider within the channel The second side edge is removable and borders the receiving ramp. The slider extends into the receiving ramp as moved by the thrust bolt to secure the magazine. The receiving ramp descends at an angle from the front edge to the back edge to accommodate the magazine.

A vice jaw deflecting structure, comprising a vice main body, a lead screw positioning seat, a lead screw, a first flexible jaw set and a second flexible jaw set; the guide slot of the vice main body has a bottom surface, a first side wall surface, and a second side wall surface; the first flexible jaw set and the second flexible jaw set have a slide, a jaw and a limiting component; the slide is configured with a limiting block protruding toward the jaw, the limiting block protrudes toward the lead screw positioning seat and is formed with a -shaped stop block having a curved top view; the jaw bottom surface has a first convex wall surface and a second convex wall surface matching and contacting the first side wall surface and the second side wall surface.