German OTT-JAKOB workpiece fixtures OTT-JAKOB model OTT-JAKOB price

OTT-JAKOB workpiece 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. In a broad sense, any device used to quickly, conveniently, and safely install workpieces 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 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 (enabling the workpiece to undergo machining at several 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 workpieces on machine tools, to ensure that the surface of the workpiece meets the technical requirements specified in the drawings, such as dimensions, geometric shape, and mutual positional accuracy with other surfaces, the workpiece must be properly located and securely clamped before machining.

OTT-JAKOB Workpiece Fixture Overview

Vacuum suction cups are one of the actuators in vacuum equipment. The suction cup material is made of nitrile rubber, which has high tensile strength, and is therefore widely used in various vacuum holding devices, such as in construction, paper industry, printing, glass, and other industries, to perform tasks such as holding and transporting thin and light items like glass and paper. Vacuum suction cups are also known as vacuum lifters and vacuum nozzles. Generally speaking, using vacuum suction cups to grab products is one of the most cost-effective methods. There are various types of vacuum suction cups; rubber suction cups can operate at high temperatures, silicone rubber suction cups are very suitable for grabbing products with rough surfaces, and polyurethane suction cups are highly durable. In addition, 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 for manufacturing the suction cup. Usually, to avoid scratching the surface of the product, it is best to choose suction cups with bellows made of nitrile rubber or silicone rubber.

OTT-JAKOB Workpiece 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, rough machining, and fine machining; ordinary powerful suction chucks have weaker and unevenly distributed suction force, unable to meet the requirements of heavy-duty machining operations. 2) Machining precision: The holding force of electrically controlled powerful suction chucks does not require continuous power supply to maintain, generating no heat during continuous operation, avoiding thermal deformation of the workpiece. Meanwhile, the strong and uniform surface suction force ensures the highest machining precision even if the workpiece extends beyond the table surface; whereas ordinary electromagnetic suction chucks require a continuous supply of current, 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 if operated continuously for more than 20 hours per day, without any failures or need for maintenance; ordinary permanent magnet suction chucks may experience a decline in suction force after about half a year of use, while electromagnetic suction chucks can only operate for a few hours each day, and the equipment is prone to malfunction, requiring 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 with a simple button press in 0.3 seconds, greatly improving production efficiency.

OTT-JAKOB Workpiece Fixture Maintenance

1) Check whether the limit dimensions remain in the correct position before use. 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, they can be reassembled, shifting the worn areas to continue use. 3) Apply anti-rust oil after use. Regular long-term lubrication can maintain 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 body and slide ways of the synchronous fixture using an air gun or similar tools. During cleaning, remove the dust cover fixing screws and take off the dust cover, while extending the main jaws to their widest position to easily clean accumulated chips inside the fixture. To avoid reduced clamping force due to rust, use rust-preventive cutting oil. Remove the synchronous fixture for thorough cleaning 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 ones immediately if severe. Ensure sufficient lubrication before assembly.

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