Inside broaching machine
OwnerLothar Gierthinventor
Life of this patent
Estimating the term…
Abstract
An inside broaching machine having an upper pressure cylinder and a lower drawing cylinder that can be displaced in a machine rack. A machine table with receiving means, receives work pieces in parallel, and the broaching tools extending through the machine table each can be locked on the pressure carriage and the drawing carriage in tool holders. The machine exerts pressure and tensile force in the course of the broaching operation. The broaching tools are held clamped on the pressure carriage and the drawing carriage in radially clamping tool holders through the broaching operation. The two carriages are coupled in a force-locked manner.
Claims8
An inside broaching machine driven in a machine rack (1) comprising:
- an upper pressure carriage (31) displaceably mounted in the machine rack;
- a lower drawing carriage (32) displaceably mounted in the machine rack below said upper pressure carriage;
- a machine table (2) mounted between said upper pressure carriage (31) and said lower drawing carriage (32) in the machine rack (1)
- at least one receiving means disposed on said machine table to hold at least one work piece in the broaching machine;
- A plurality of tool holders wherein there is at least one upper tool holder (61, 62) disposed on said upper pressure carriage (31), and at least one lower tool holder disposed on said lower drawing carriage;
- and
- at least one broaching tool (5) extending through said machine table (2), wherein said at least one broaching tool (5) is lockable in said at least one tool holder (61, 62) on said upper pressure carriage (31) and said lower drawing carriage (32);
- wherein said upper pressure carriage (31) and said lower drawing carriage (32) are coupled in a force locked manner, and simultaneously admit pressure and tensile force in the course of broaching work when said at least one broaching tool (5) is held clamped in said tool holders (61, 62) on said upper pressure carriage (31) and said lower drawing carriage (32).
Dependencies are inferred from the claim text.