German leitermann workpiece fixtures leitermann model leitermann price

leitermann workpiece fixtures are devices used on machine tools to clamp workpieces and guide cutting tools. They refer to fixtures specifically designed for a particular operation on a specific workpiece. Their characteristics include a compact structure, rapid, convenient, and labor-saving operation, ensuring high machining accuracy and production efficiency. However, the design and manufacturing cycle is long, and manufacturing costs are high. When the product changes, the fixture becomes obsolete and is scrapped because it can no longer be used. It is only suitable for production with fixed products and large batch sizes. It contacts the positioning datum of the workpiece to determine the correct position of the workpiece in the fixture, thereby ensuring the correct relative position of the workpiece with respect to the cutting tool and the machine tool's machining motion during processing. It typically consists of positioning elements, clamping devices, tool-setting and guiding elements or devices.

leitermann workpiece fixture classification

1) Lathe fixtures: Fixtures used on lathes to machine internal and external rotary surfaces and end faces of workpieces are called lathe fixtures. Most lathe fixtures are mounted on the spindle, while a minority are installed on the saddle or bed. 2) CMM fixtures: Used on coordinate measuring machines, utilizing modular support and reference devices to achieve flexible fixation of the measured workpiece. This device allows automatic programming to support the workpiece and establish an unlimited number of workpiece configuration reference points. Advanced dedicated software can directly generate the workpiece clamping program within seconds using the workpiece's geometric data. 3) Industrial robot fixtures: All mounted on industrial robots for use in industrial automation equipment, representing one of the new technologies in modern industrial automation. They mainly appear in modern industrial production in conjunction with robots, with common applications in automated unmanned factories for machine tool loading/unloading, workpiece palletizing/depalletizing, welding, grinding, etc. 4) Milling machine fixtures: All mounted on the milling machine table, moving with the table during feed motion. They mainly consist of positioning devices, clamping devices, fixture bodies, connecting elements, and tool-setting elements. During milling, the cutting force is large and the cutting is intermittent, resulting in significant vibration. Therefore, milling machine fixtures require high clamping force, and high stiffness and strength are required. 5) Bearing housing fixtures: To ensure and improve the production quality of bearing housings, in addition to machine tools and other mechanical equipment, a large amount of process equipment is used, including bearing housing fixtures, molds, cutting tools, and related auxiliary tools. A bearing housing fixture is a production tool specifically used to ensure the product quality of bearing housings, making the production process more convenient. Different bearing housing fixtures vary in structure, form, operating conditions, and design principles, resulting in a wide variety of types and styles. They account for a significant proportion in both quantity and variety. This type of bearing housing fixture can accurately determine the relative position between the workpiece and the cutting tool, meaning it can clamp the workpiece to be machined, thereby completing the motions required during the machining process. Since bearing housing fixtures play a very important role in the bearing housing production process, the drafting of bearing housing fixture design drawings is also very important.

leitermann workpiece fixture features

1) Suction cup holding force: Electrically controlled powerful suction chucks have extremely strong holding force, up to 16kg/cm², with uniform and adjustable magnetic field distribution. They are suitable for various heavy-duty machining, roughing, and finishing operations. Ordinary powerful suction chucks have weaker and unevenly distributed holding force, unable to meet the requirements of heavy-duty machining. 2) Machining accuracy: The holding force of electrically controlled powerful suction chucks does not require a continuous power supply to maintain. No heat is generated during continuous operation, avoiding thermal deformation of the workpiece. Meanwhile, the strong and uniform surface suction ensures the highest machining accuracy even if the workpiece extends beyond the chuck surface. In contrast, ordinary electromagnetic chucks require a continuous current supply, generating heat after a period of operation. This not only causes thermal deformation of the workpiece but also reduces the chuck's magnetic force, failing to guarantee machining accuracy. 3) Performance: Electrically controlled powerful suction chucks can be used continuously. Even with continuous operation for more than 20 hours per day, no failures occur, and no maintenance is required. Ordinary permanent magnet chucks experience a decline in suction force after about half a year of use. Electromagnetic chucks can only operate for a few hours per day, are prone to malfunctions, and require frequent replacement and repair of internal components. 4) Operational efficiency: Using ordinary powerful suction chucks requires significant workpiece adjustment time, accounting for 40%-50% of the entire machining process. Clamping and positioning are prone to obvious errors, resulting in a high scrap rate and very low efficiency. Electrically controlled powerful suction chucks feature automatic auxiliary positioning. Simply pressing a button completes workpiece clamping or release in 0.3 seconds, significantly improving production efficiency.

leitermann workpiece fixture maintenance

When using vacuum suction cups (without grippers), note that the manipulator's movement speed should not be too high; otherwise, shear forces will act on the suction cups, causing the product to drop easily during rapid twisting. In some cases, a gripper can be used to ensure safe transport of the product. Considering the possibility of the product sticking to the mold, an air gripper is usually installed to solve this problem. When the product's surface area is too small or the product is too heavy for vacuum suction cups, the issue can also be resolved by using grippers. If strict aesthetic requirements apply to the product, the clamped area must not be the outer surface. To address this, a sensor circuit can be installed. Once the gripper or suction cup has securely grasped the product, the sensor sends a signal to the manipulator to proceed with the next step. In cases where the manipulator's motion capability is limited and manual twisting or prying is required to demold the product or move it out of the molding area, a special cylinder capable of independent movement without relying on the manipulator can be added to improve the situation.

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