dietzel fixtures Germany dietzel models dietzel prices

dietzel fixtures refer to devices used in the manufacturing process to secure workpieces in the correct position for machining or inspection, also known as clamps. Broadly speaking, any device used to quickly, conveniently, and safely mount 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 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 multiple stations in a single setup, including rotary indexing and linear indexing types), connecting elements, and fixture bodies (fixture bases). Examples include welding fixtures, inspection fixtures, assembly fixtures, and machine tool fixtures, with machine tool fixtures being the most common, often simply referred to as fixtures. When machining workpieces on machine tools, to ensure the workpiece surface meets technical requirements such as dimensions, geometric shape, and mutual positional accuracy with other surfaces as specified in drawings, the workpiece must be properly located (positioned) and securely clamped (clamped) before machining.

dietzel fixture applications

Whether it is a simple hydraulic fixture or a complex integrated production line, the design process for hydraulic fixtures remains the same: formulation of the overall scheme, selection of hydraulic cylinder types and specifications, selection of control valves, design of mechanical parts, selection of pump station accessories, and system connection. Hydraulic fixtures provide powerful clamping and positioning forces for various machining processes. Yunpower cylinders are used for positioning and clamping in automated machining processes. Products such as self-centering vises and self-centering clamping elements provide precise positioning, swing clamp cylinders and lever cylinders provide clamping force on products, and support cylinders prevent deformation during product machining. From simple fixation to robot-assisted machining centers, cylinders provide clamping and support forces to enhance production efficiency.

dietzel fixture features

Mechanical grippers commonly use compressed air as the power source, achieving finger movement through transmission mechanisms. Based on the different motion trajectories of the fingers when clamping the workpiece, mechanical grippers are classified into: 1) Arc-opening 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 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 shows two cases where a parallelogram transmission mechanism drives the parallel opening and closing of the fingers. 3) Linear-parallel opening 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; inclined cam slots are machined on the sliding blocks of each finger. When the piston rod moves up and down, the rollers mounted at its end move within the cam slots, achieving parallel clamping movement of the fingers. Alternatively, a rack-and-pinion mechanism is used; when the rack at the end of the piston rod drives the gear to rotate, the racks on the fingers move linearly, thereby causing the two fingers to open and close in parallel to clamp the workpiece.

dietzel fixture selection

When selecting pneumatic grippers and jaw designs, these are the main factors to consider: 1) Part shape, orientation, and dimensional variations: If the object has two opposing flat surfaces, a double-jaw parallel gripper can be used to address dimensional deviations. For cylindrical objects, double-jaw grippers can also be used for clamping. Note that retention or enveloping clamping requires less force. 2) Part weight: The clamping force must be sufficient to hold the object securely while performing the required operations. The type of jaw design must be considered when calculating the required clamping force. Please note that safety factors should be taken into account when selecting the required force, and air pressure is also a factor to consider. 3) Accessibility: This relates both to the operation being performed and the spatial constraints of the gripper jaws. If external operations are to be performed on the object, internal clamping is required. Scissor-type grippers are generally lower in cost but require more space for jaw movement. 4) Environment: Grippers used in harsh environments or cleanrooms require appropriate designs. 5) Object retention: When air supply is cut off, the gripper will release its hold on the object, causing it to drop. For such applications, spring-assisted grippers can be used.

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