German OTT-JAKOB workholding fixtures OTT-JAKOB model OTT-JAKOB price

OTT-JAKOB workholding fixtures refer to devices used in the manufacturing process to secure the workpiece in the correct position for machining or inspection, also known as jigs. Broadly speaking, any device used to quickly, conveniently, and safely install a workpiece during any stage of the process can be called a fixture. Fixtures typically consist of locating elements (to determine the correct position of the workpiece within the fixture), clamping devices, tool-setting guide elements (to determine the relative position of the tool to the workpiece or guide the tool direction), indexing devices (enabling the workpiece to complete machining at multiple stations in a single setup, including rotary indexing devices and linear indexing devices), connecting elements, and the fixture body (fixture base). Examples include welding fixtures, inspection fixtures, assembly fixtures, and machine tool fixtures, among which machine tool fixtures are the most common and are often simply referred to as fixtures. When machining a workpiece on a machine tool, to ensure the surface meets the dimensional, geometric, and positional accuracy requirements specified in the drawing, the workpiece must be properly located and securely clamped before machining.

OTT-JAKOB Workholding Fixture Overview

Vacuum suction cups are one type of actuator for vacuum equipment. The suction cup material is made of nitrile rubber, which has high tensile strength, making it widely used in various vacuum holding equipment, such as in construction, papermaking, printing, and glass industries, to handle and transport thin and light items like glass and paper. Vacuum suction cups are also known as vacuum lifters or vacuum nozzles. Generally, using vacuum suction cups to grasp products is one of the most cost-effective methods. There is a wide variety of vacuum suction cups; rubber suction cups can operate at high temperatures, silicone rubber suction cups are very suitable for gripping products with rough surfaces, and polyurethane suction cups are highly durable. Additionally, in actual production, if oil resistance is required for the suction cup, materials such as polyurethane, nitrile rubber, or vinyl-containing polymers can be considered. Typically, to avoid scratching the product surface, it is best to choose suction cups with bellows made of nitrile rubber or silicone rubber.

OTT-JAKOB Workholding Fixture Features

1) Suction force: Electrically controlled powerful suction chucks have extremely strong holding force, up to 16kg/cm², with uniform and adjustable magnetic distribution, 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 precision: The holding force of electrically controlled powerful suction chucks does not require a continuous power supply to maintain, generating no heat during continuous operation, thus avoiding thermal deformation of the workpiece. Meanwhile, the strong and uniform surface suction ensures the highest machining precision even if the workpiece extends beyond the chuck surface; whereas ordinary electromagnetic chucks require a continuous current supply, generating heat after a period of operation, which not only causes thermal deformation of the workpiece but also reduces the magnetic force of the chuck, failing to guarantee machining precision. 3) Performance: Electrically controlled powerful suction chucks can be used continuously, even operating for more than 20 hours daily without any failures or need for maintenance; ordinary permanent magnet chucks may experience a decline in suction force after about half a year of use, while electromagnetic chucks can only operate for a few hours each day, are prone to malfunction, and require frequent replacement and repair of internal components. 4) Operational efficiency: Using ordinary powerful suction chucks requires significant time for workpiece adjustment, accounting for 40%-50% of the entire machining process, and clamping and positioning are prone to obvious errors, resulting in high scrap rates and very low efficiency; electrically controlled powerful suction chucks feature automatic auxiliary positioning, completing workpiece clamping or release in just 0.3 seconds with the simple press of a button, significantly improving production efficiency.

OTT-JAKOB Workholding Fixture Maintenance

1) Check before use whether the limit dimensions are still in the correct position. 2) If the stop pins are excessively worn, they can be ground and repaired; if the baffles, pins, or locating taper pins are excessively worn, they 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 proper lubrication is essential. After machining, be sure to clean the synchronous fixture body and slide ways using an air gun or similar tools. During cleaning, remove the dust cover fixing screws and take off the dust cover, then open the main jaws to their widest position to easily clean chips accumulated inside the fixture. To prevent reduced clamping force due to rust, use rust-preventive cutting oil. Completely clean the synchronous fixture every six months (at least every two months when machining cast iron or copper parts). Check parts for damage or wear, and replace with new parts immediately if severe. Lubricate thoroughly before assembly.

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