Practical Guide to Hydraulic Fixture Design
Design basis
1、Determine the basic structure of the fixture according to the product structure, workpiece material, billet type and process;
2、Applicable machine tools and fixtures, machine tool connection and hydraulic system of machine tools;
3、Determine the positioning mode, clamping mode and overall scheme of hydraulic fixture (high and low pressure, single and double action, etc.);
4、Determine the basic structure of the hydraulic fixture according to the structure of the workpiece, positioning and clamping method, etc.
Design guidelines
1、The hydraulic fixture should be optimally designed and implement the principles of generalization, standardization and serialization, and use standard and common parts to the maximum extent.
2, the new design of hydraulic fixture can refer to the design experience of the same type of parts fixture, the program should be fully justified.
3, the design of hydraulic fixture should be a comprehensive consideration of reliability, operability, safety, technology, economy, ease of maintenance and other principles.
Design process
1、Determine the cycle time of the machined workpiece, processing quantity, processing equipment, fixture type, the time allowed for loading and unloading and clamping of the machined workpiece, determine the available working space on the machine table, and thus determine the main hydraulic system to be used.
2、Determine the positioning clamping scheme according to the product structure of the workpiece.
3, calculate the cutting forces generated during machining and select hydraulic components.
4, the preparation of fixtures occurring action sequence flow, drawing hydraulic schematic diagram.
5、The overall structure design, including the layout of hydraulic components, the structure of the base plate considering chip removal, fixture error-proof device, fixture guide device, etc..
6、Design of the oil circuit, including making the oil circuit optimized and the layout of the oil circuit more reasonable.
7、Drawing the engineering drawing of hydraulic fixture.