German rolleri workpiece fixtures rolleri model rolleri price

rolleri workpiece fixtures are devices used in the manufacturing process to secure the workpiece in the correct position for machining or inspection, also known as clamps. Broadly speaking, any device used to quickly, conveniently, and safely mount 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 mechanisms, 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 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 dimensional, geometric, and positional accuracy requirements specified in the drawing, the workpiece must be properly located and securely clamped before machining.

rolleri Workpiece Fixture Classification

Fixtures can be classified by usage characteristics as follows: (1) Universal general-purpose fixtures. Such as machine vises, chucks, suction cups, dividing heads, and rotary tables, which have high versatility and can adapt well to changes in machining processes and workpieces. Their structures are standardized, and their sizes and specifications are serialized, with most becoming standard accessories for machine tools. (2) Special-purpose fixtures. Designed and manufactured specifically for the clamping needs of a certain product part at a specific process step, serving a single purpose with strong specificity, generally designed by the product manufacturer. Common types include lathe fixtures, milling fixtures, drill jigs (machine tool fixtures used to guide tools for drilling or reaming holes in workpieces), boring jigs (machine tool fixtures used to guide boring bars for boring holes in workpieces), and pallet fixtures (movable fixtures used on automated lines of modular machine tools). (3) Adjustable fixtures. Special-purpose fixtures whose elements can be replaced or adjusted. (4) Modular fixtures. Fixtures composed of standardized elements of different shapes, specifications, and uses, suitable for new product prototyping, single-piece and small-batch production with frequent product changes, and temporary tasks. In addition to vises, chucks, dividing heads, and rotary tables, another common type is the tool holder. Generally, when the term 'tool fixture' appears, it mostly refers to the tool holder.

rolleri Workpiece Fixture Features

Mechanical grippers commonly use compressed air as the power source, achieving finger movement through a transmission mechanism. Based on the different motion trajectories of the fingers when clamping the workpiece, mechanical grippers are divided into: 1) Arc opening/closing type, where the motion trajectory of the finger tips is an arc under the drive of the transmission mechanism. This type of gripper has strict requirements on the dimensions of the clamped part of the workpiece; otherwise, it may cause abnormal workpiece status. 2) Arc parallel opening/closing type, where the two fingers of this gripper perform parallel opening and closing movements during operation, while the motion trajectory of the finger tips is an arc. The illustrated gripper uses a parallelogram transmission mechanism to drive the parallel opening and closing of the fingers in two scenarios. 3) Linear parallel opening/closing type. The motion trajectory of the two fingers of this gripper is linear, and the clamping surfaces of the two fingers always remain parallel. A cam mechanism is used to achieve the parallel opening and closing of the two fingers. Diagonal cam slots are opened on the sliding blocks of each finger. When the piston rod moves up and down, the rollers installed at its end move within the cam slots, achieving parallel clamping movement of the fingers. Using a rack and pinion mechanism, when the rack at the end of the piston rod drives the gear to rotate, the rack on the fingers moves linearly, thereby causing the two fingers to open and close in parallel to clamp the workpiece.

rolleri Workpiece Fixture Selection and Use

With the continuous development of China's industry, electromagnetic chucks are increasingly widely used in industrial production. The most important aspect of an electromagnetic chuck is its parameters; among the performance parameters, the lifting capacity and its duty class are the most critical. The so-called lifting capacity of an electromagnetic chuck refers to the maximum weight of the load allowed to be lifted under specified working conditions, also known as the rated lifting capacity. Generally, for cranes equipped with an electromagnetic chuck, the lifting capacity should also include the weight of the electromagnetic chuck itself. Rectangular electromagnetic chucks have lifting threaded holes on both sides; during installation, T-shaped screws can be screwed in for lifting. They are fixed to the worktable using T-shaped blocks and screws. Connect the DC power supply and ground wire from the machine tool, then perform a precision grind on the upper surface of the chuck to ensure the parallelism between the upper surface and the bottom surface. When holding workpieces, sufficient positioning and holding force can be obtained by bridging two adjacent magnetic poles, allowing grinding operations to proceed. Magnetization and demagnetization of the workpiece can be controlled via the machine tool buttons.

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