A die or punch is provided for a press tool. The die or punch includes a body and a roller assembly having a holder and a roller. The holder is shaped to slidably engage with a complementary cavity in the body to facilitate secure installation of the holder in the body. The holder is able to be removably inserted into the body to present the roller as a forming edge to shape a work piece in a press tool. The roller is able to turn with respect to the holder when shaping a work piece to protect the roller against wear.

A die or punch is provided for a press tool. The die or punch includes a body and a roller assembly having a holder and a roller. The holder is shaped to slidably engage with a complementary cavity in the body to facilitate secure installation of the holder in the body. The holder is able to be removably inserted into the body to present the roller as a forming edge to shape a work piece in a press tool. The roller is able to turn with respect to the holder when shaping a work piece to protect the roller against wear.

A lubrication ring for a mechanical expander (1) for sizing large pipes comprises a conventionally manufactured ring (12) made of steel, in particular construction steel. Fluid bores are provided in the ring (12). A part (13) of the lubrication ring (6) is manufactured by an additive manufacturing technology.

A lubrication ring for a mechanical expander (1) for sizing large pipes comprises a conventionally manufactured ring (12) made of steel, in particular construction steel. Fluid bores are provided in the ring (12). A part (13) of the lubrication ring (6) is manufactured by an additive manufacturing technology.

[Object]

A pressing die and a press working method that can achieve both facilitation of management of an appropriate clearance and working durability at a high level are provided.

[Solving Means]

The pressing die of the present invention is a pressing die for press working a metal material using a punch part and a die part. A working surface of one of the punch part and the die part is coated with a diamond film the working surface contacting with the metal material. A working surface of the other one of the punch part and the die part is coated with a surface treatment film having a Vickers hardness of 8000 Hv or less the working surface contacting with the metal material.

A bending system includes a greasing unit configured to move in a right-left direction by way of a moving operation of an external operation member and to supply grease to a sliding contact part of a tool holder, and a greasing unit holder provided on one side in a right-left direction of a table and configured to support the greasing unit. The greasing unit includes a greasing unit main body, and an application member provided on the greasing unit main body and formed in a shape corresponding to the sliding part of the tool holder, the application member being configured to be able to be impregnated with the grease.

A bending system includes a greasing unit configured to move in a right-left direction by way of a moving operation of an external operation member and to supply grease to a sliding contact part of a tool holder, and a greasing unit holder provided on one side in a right-left direction of a table and configured to support the greasing unit. The greasing unit includes a greasing unit main body, and an application member provided on the greasing unit main body and formed in a shape corresponding to the sliding part of the tool holder, the application member being configured to be able to be impregnated with the grease.

Tube bending systems configured to bend a tube. The tube bending systems include a tube bending device and a lubrication system. The tube bending device includes a bending device frame and a bending die assembly. The tube bending device is configured to bend the tube. The bending die assembly is mounted to the bending device frame and includes a bending die against which the tube is selectively bent. The lubrication system is configured to selectively direct a lubrication fluid to the tube proximate the bending die assembly.

Tube bending systems configured to bend a tube. The tube bending systems include a tube bending device and a lubrication system. The tube bending device includes a bending device frame and a bending die assembly. The tube bending device is configured to bend the tube. The bending die assembly is mounted to the bending device frame and includes a bending die against which the tube is selectively bent. The lubrication system is configured to selectively direct a lubrication fluid to the tube proximate the bending die assembly.

This disclosure relates generally to metalworking fluids. This disclosure relates more particularly to water-soluble metalworking fluids that include high viscosity polymers, and that can be used in metal cold rolling operations.