German klopfer workpiece fixtures klopfer model klopfer price

klopfer workpiece fixtures are devices used to secure the workpiece in the correct position for machining or inspection during the manufacturing process, also known as jigs. Broadly speaking, any device used to quickly, conveniently, and safely install a workpiece in any step of the process can be called a fixture. Fixtures typically consist of locating elements (to determine the correct position of the workpiece in the fixture), clamping devices, tool-setting guide elements (to determine the relative position of the tool and workpiece or guide the tool direction), indexing devices (to allow the workpiece to complete machining at several stations in one setup, including rotary indexing devices and linear indexing devices), connecting elements, and fixture bodies (fixture bases). Examples include welding fixtures, inspection fixtures, assembly fixtures, and machine tool fixtures, among which machine tool fixtures are the most common and are often referred to simply as fixtures. When machining a workpiece on a machine tool, to ensure that the surface of the workpiece meets the technical requirements specified in the drawing, such as dimensions, geometric shape, and mutual positional accuracy with other surfaces, the workpiece must be properly located and securely clamped before machining.

klopfer workpiece fixture applications

Whether it is a simple hydraulic fixture or a complex integrated production line, the design process for hydraulic fixtures is the same: formulation of the overall scheme, selection of hydraulic cylinder types and specifications, selection of control valves, design of mechanical parts, selection of pump station accessories, and system connection. Hydraulic fixtures provide powerful clamping and positioning forces for various machining processes. Cloud Power cylinders are used for positioning and clamping in automated machining processes. Products such as self-centering vises and self-centering clamping elements provide good positioning, swing cylinders and lever cylinders provide clamping force on the product, and support cylinders prevent deformation during product machining. From simple fixing to robot-assisted machining centers, cylinders provide clamping and support forces to improve production efficiency.

klopfer workpiece fixture classification

1) General-purpose fixtures: General-purpose fixtures are standardized fixtures that can be used to machine different workpieces within a certain range. For example, three-jaw chucks and four-jaw independent chucks on lathes, and vise jaws, indexing heads, and rotary tables on milling machines. These fixtures are generally produced by specialized factories and are often supplied to users as machine tool accessories. Their characteristics are wide adaptability and low production efficiency, mainly suitable for single-piece and small-batch production. 2) Special-purpose fixtures: Special-purpose fixtures are fixtures specifically designed for a particular operation on a specific workpiece. Their characteristics are compact structure, rapid, convenient, and labor-saving operation, ensuring high machining precision and production efficiency, but the design and manufacturing cycle is long and the manufacturing cost is high. When the product changes, the fixture will be scrapped because it can no longer be used. It is only suitable for production with fixed products and large batches. 3) General-purpose adjustable fixtures and group fixtures: Their characteristic is that some components of the fixture can be replaced and some devices can be adjusted to adapt to the machining of different parts. Fixtures used for group machining of similar parts are called group fixtures. Compared with group fixtures, general-purpose adjustable fixtures have less clearly defined machining objects and a wider scope of application. 4) Modular fixtures: Modular fixtures are fixtures assembled from a set of pre-manufactured standard elements and components according to the machining requirements of the part. Manufactured by professional manufacturers, their characteristics are flexibility, strong versatility, short manufacturing cycle, and reusable components, making them particularly suitable for trial production of new products and single-piece small-batch production. 5) Pallet fixtures: Pallet fixtures are fixtures used on automatic lines. This type of fixture not only serves to clamp the workpiece but also moves as one unit with the workpiece along the automatic line from one station to the next for different machining operations.

klopfer workpiece fixture maintenance

1) Check before use whether the limit dimensions are still in the correct position. 2) If the stop pin wear exceeds tolerance, it can be repaired by grinding; if the baffle, pin, or locating taper pin wear exceeds tolerance, it can be reassembled, shifting the worn areas to continue use. 3) Apply anti-rust oil after use. Regular long-term lubrication maintains the life of synchronous fixtures; incorrect lubrication will lead to reduced clamping force, poor precision, wear, and jamming, so correct lubrication is essential. After machining, be sure to clean the body and slide ways of the synchronous fixture with an air gun or similar tool. When cleaning, remove the dust cover fixing screws and take off the dust cover, while opening the main jaws to the widest position to easily clean chips accumulated inside the fixture. To avoid reduced clamping force due to rust, use rust-preventive cutting oil. Completely disassemble and clean the synchronous fixture every six months (at least every two months when machining cast iron or copper alloys). Check parts for damage or wear, and replace with new ones immediately if severe. Lubricate thoroughly before assembly.

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