Railway Wheel Chuck Structure With Side-Mounted Clamping Levers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Chucks used for machining large workpieces like railway wheels are structurally weakened by mounting openings for clamping levers, requiring complex and time-consuming reinforcement measures, which compromise their robustness.
Innovation Solution
The lever receptacles and mounting openings for clamping levers are positioned on the workpiece side or outer circumference of the chuck, avoiding weakening the drive side, and the chuck body is designed as a single-piece robust structure with centrifugal force compensation devices to manage high centrifugal forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If mounting openings are provided on the drive side for clamping levers, then the clamping device can be mounted, but the chuck body is weakened and requires complex reinforcement measures
Solution Approach 1:
The patent inverts the conventional approach by locating mounting openings on the workpiece side instead of the drive side. The lever receptacles are positioned on the outer circumference or workpiece side, allowing clamping levers to be mounted without creating weaknesses on the drive side that would require reinforcement.
2Force
If the chuck body is made robust for heavy workpieces, then it can handle large masses, but mounting openings create weaknesses requiring intermediate bodies or flanges
Solution Approach 1:
The patent eliminates the need for intermediate bodies or flanges by inverting the mounting opening location. The robust chuck body design is maintained without compromises on the drive side, as all necessary mounting openings are relocated to the workpiece side or outer circumference.
3Ease of operation
If lever receptacles are positioned on the drive side, then clamping levers can be mounted, but the robustness of the chuck body is compromised
Solution Approach 1:
The patent moves the lever receptacles from the drive side to the outer circumference or workpiece side, utilizing a different spatial dimension. This relocation allows mounting operations to proceed without compromising the structural robustness of the drive side chuck body.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design maintains the chuck's robustness and stability, allowing it to securely hold and machine heavy workpieces without compromising structural integrity, while minimizing complexity and reinforcement needs.
Implementation Method 1
a lever mechanism is arranged between each jaw and the clamping drive body, which transmits a drive movement of the clamping drive body into a clamping movement of the respective jaw
Implementation Method 2
Each jaw (31-33) is assigned a centrifugal force compensation device (70), which compensates for centrifugal forces (FK) acting on the jaw (31-33) during rotation of the chuck (10) about its axis of rotation (D)
Data Source
Figure 1~3
Figure 4~6
Figure 7~9
AI summary
The invention relates to a chuck (10) with a chuck body (11) which has a drive side (12) provided for connection to a rotary drive (91) of a machine tool (90) and a workpiece side (13) provided for mounting a workpiece (100), wherein the chuck (10) has a clamping device (30) with jaws (31-33) adjustable between a clamping position (SP), in which the clamping device clamps the workpiece to the chuck (10), and a release position (LP), in which the clamping device releases the workpiece, the jaws being guided on jaw guides (40) arranged on the workpiece side at angular intervals about the longitudinal axis (L) between the release position and the clamping position (SP) and being driven by a clamping drive body (34) driven from the drive side (12) between the release position and the clamping position (SP), wherein a lever mechanism (50) is arranged between each jaw and the clamping drive body.which transmits a drive movement of the clamping drive body into a clamping movement of the respective jaw between the release position and the clamping position (SP), wherein a respective lever mechanism (50) comprises a clamping lever (51) which is received in a lever receptacle (15) of the chuck body (11) and pivotably mounted by means of a lever pivot bearing (54) arranged on the lever receptacle, which is arranged between a drive arm (52) of the clamping lever coupled to the clamping drive body and an output arm (53) of the clamping lever coupled to the jaw. The lever receptacle has a lever mounting opening (17) arranged on the workpiece side and/or on an outer circumference (14) of the chuck body (11) extending about the longitudinal axis (L), through which the clamping lever can be inserted into the lever receptacle and mounted in the lever receptacle.