German tecnomors workpiece fixtures tecnomors model tecnomors price

tecnomors workpiece fixtures refer to devices used in the manufacturing process to secure the workpiece, ensuring it occupies the correct position for machining or inspection; they are also known as clamps. Broadly speaking, any device used to quickly, conveniently, and safely install a workpiece during any step 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 and guiding elements (to determine the relative position between the tool and the workpiece or to 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, with machine tool fixtures being the most common, often referred to simply as fixtures. When machining a workpiece on a machine tool, to ensure the surface 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 (positioned) and securely clamped (clamped) before machining.

tecnomors workpiece fixture structure

1) Locating elements: These contact the locating reference of the workpiece to determine its correct position within the fixture, thereby ensuring the correct relative position between the workpiece and the tool and machine tool movements during machining. 2) Clamping devices: Used to clamp the workpiece, keeping it in the established position within the fixture during cutting. As shown in Figure 6-1, this includes the nut 5 and open washer. 3) Tool-setting and guiding elements or devices: These elements ensure the correct position between the workpiece and the tool. Elements used to determine the correct position of the tool before machining are called tool-setting elements, such as tool-setting blocks. Elements used to determine the tool position and guide the tool during machining are called guiding elements. 4) Connecting elements: Elements that connect the fixture to the machine tool, ensuring the mutual positional relationship between the machine tool and the fixture. 5) Fixture body: The base component used to connect or fix various elements and devices on the fixture into a single unit. It connects and aligns with relevant parts of the machine tool, giving the fixture a definite position relative to the machine tool. 6) Other elements and devices: Some fixtures require indexing mechanisms based on the machining requirements of the workpiece, and milling machine fixtures may also require locating keys, etc. Not all of these components are indispensable for every type of machine tool fixture, but any fixture must have locating elements and clamping devices, as they are key to ensuring the machining accuracy of the workpiece, with the aim of positioning the workpiece accurately and clamping it securely.

tecnomors workpiece fixture features

1) Suction force of the chuck: Electrically controlled powerful chucks offer superior holding force, with a maximum of 16kg/cm², uniform and adjustable magnetic distribution, suitable for various heavy-duty machining, roughing, and finishing operations; ordinary powerful chucks have weaker and unevenly distributed suction force, unable to meet the requirements of heavy-duty machining. 2) Machining accuracy: The holding force of electrically controlled powerful 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 accuracy even if the workpiece extends beyond the table 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 accuracy. 3) Performance: Electrically controlled powerful chucks can be used continuously, operating for more than 20 hours daily without any faults or need for maintenance; ordinary permanent magnet chucks experience a decline in suction force after about half a year of use, while electromagnetic chucks can only operate for a few hours a day, are prone to failures, and require frequent replacement and repair of internal components. 4) Operational efficiency: Using ordinary powerful 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 a high scrap rate and very low efficiency; electrically controlled powerful chucks feature automatic auxiliary positioning, completing workpiece clamping or release with a simple button press in 0.3 seconds, significantly improving production efficiency.

tecnomors workpiece fixture classification

Mechanical gripper-type end effectors used in loading and unloading industrial robots are mostly two-finger claw types. Classified by finger movement, they can be divided into translational and rotational types. Classified by mechanical clamping method, they can be divided into external clamping and internal expansion types. Classified by mechanical structural characteristics, they can be divided into electric (electromagnetic), hydraulic, and pneumatic types, as well as their combinations. 1) Pneumatic suction type: Pneumatic suction robot end effectors use the suction force generated by negative pressure inside the suction cup to hold and move the workpiece. The suction cup creates negative pressure in a soft rubber or plastic bellows to hold the workpiece. This type of robot end effector is suitable for handling large, thin, low-rigidity metal or wooden sheets, paper, glass, and curved shells. Depending on the application, the end effector can be made with single, double, multiple, or specially shaped suction cups. Methods for creating negative pressure include: squeeze-type suction cups, airflow negative pressure suction cups, and vacuum pump exhaust suction cups. Squeeze-type suction cups: Squeeze exhaust suction cups expel all air from the cup by downward squeezing force, creating a negative pressure state inside to hold the workpiece. They have advantages such as simple structure, light weight, and low cost. However, the suction force is not large, so they are mostly used for workpieces that are not too large in size, thin, and light. Airflow negative pressure suction cups: An airflow control valve injects compressed air from an air pump through a nozzle, forming a high-speed jet that removes air from the suction cup cavity, creating negative pressure to hold the object. This type is convenient and low-cost if compressed air is available at the job site. Vacuum pump exhaust suction cups: Vacuum pump exhaust suction cups use an electromagnetic control valve to connect the vacuum pump to the suction cup. When the control valve evacuates air, negative pressure forms inside the cup to hold the object. Conversely, when the control valve connects the cup to the atmosphere, the suction force is lost, releasing the workpiece. The suction force of vacuum pump suction cups mainly depends on the adsorption area of the cup and the vacuum degree inside the q cavity (referring to the rarefaction of air). This type of suction cup is reliable and offers greater suction force, but requires a vacuum pump and airflow control system, resulting in higher costs. 2) Mechanical clamping type: The structure of a straight-bar dual-cylinder translational gripper refers to the gripper fingers being installed on a straight bar with finger mounting seats. When pressurized gas enters the rod-side chambers of the two single-acting dual cylinders, the two pistons move toward the center, clamping the workpiece; when no pressurized gas enters, springs push the two pistons outward, releasing the workpiece. To ensure synchronous movement of the two pistons, a flow divider valve is installed in the cylinder intake line. This type of end effector is used in loading and unloading assembly workstations.

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