Multi-Tool Punch Head With Axial Drive for Compact Turret Presses
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Solution Overview
Problem
Existing multiple tools for punching devices are limited in their versatility and compactness, particularly for non-driven fixed stations, and require additional space for gear elements, which hinders efficient operation and precise machining.
Innovation Solution
A multiple tool design featuring a plunger engagement with a non-rotationally symmetrical positive locking profile, a robust selection disk mechanism, and a compact driving device that transmits rotational movement without additional radial or axial gear elements, allowing for precise operation on non-driven stations and reducing overall dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional multiple tools with radial gear elements are used, then reliable transmission of rotational movement is achieved, but the device dimensions increase and compactness is reduced
Solution Approach 1:
The invention extracts and eliminates the radial gear elements from the transmission mechanism. Instead of using traditional radial gears, the patent employs a plunger engagement with form-fitting profiles that directly transmit rotational movement from the driving shaft to the tool head, removing unnecessary components and reducing overall device volume while maintaining reliable transmission.
Solution Approach 2:
The invention transitions from radial gear engagement to axial plunger engagement. The rotational movement is transmitted through axial form-fitting profiles (tongue-and-groove connections) rather than radial gear teeth, changing the dimension of engagement from radial to axial, which enables more compact tool design.
2Reliability
If additional gear elements are included for radial transmission, then robust operation is ensured, but the device complexity and number of components increase
Solution Approach 1:
The invention removes additional gear elements from the transmission system. The plunger engagement with form-fitting profiles directly couples the driving shaft to the tool head, eliminating intermediate radial gear components and simplifying the overall device structure while maintaining robust operational characteristics.
Solution Approach 2:
The invention merges the functions of multiple separate components (driving shaft, gear elements, tool head) into a more integrated plunger engagement system. The form-fitting profiles combine rotational transmission and axial positioning functions into a single engagement mechanism, reducing the total number of components.
3Reliability
If the tool head is designed with radial gear engagement, then reliable rotational transmission is achieved, but the radial and axial installation space increases
Solution Approach 1:
The invention changes the engagement dimension from radial to axial. The plunger with form-fitting profiles engages axially with the tool head, allowing rotational movement transmission without requiring additional radial clearance. This dimensional change enables more compact installation space while maintaining reliable rotational transmission.
4Volume of moving object
If a compact design without radial gear elements is used, then installation space is reduced, but the susceptibility to failure may increase
Solution Approach 1:
The invention incorporates form-fitting profiles with inherent mechanical interference that provide built-in error compensation and protection against misalignment. The tongue-and-groove connections with controlled clearance and elastic elements cushion against shocks and prevent catastrophic failure from minor misalignments, maintaining high reliability in the compact design.
Data Source
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AI summary
A multi-tool for a punching device, in particular a turret punch press, comprising a punch magazine (16) with a guide body (18) and several punches (19) guided in the guide body (18) and a drive device (17) rotatably mounted relative to the punch magazine (16) with a tool head (33) displaceable relative to the guide body (18) in the direction of a tool longitudinal axis (21) and a drive shaft (34) attached to the tool head (33) for driving an active punch (19), wherein the tool head (33) has a ram engagement (36) with a non-rotationally symmetrical positive locking profile (38) relative to the tool longitudinal axis (21) for transmitting a rotary movement from a ram of the punching device to the tool head (33).