gemi fixtures, Germany gemi models, gemi prices

gemi fixtures are devices used on machine tools to clamp workpieces and guide cutting tools. They refer to fixtures specifically designed for a particular operation on a specific workpiece. Their characteristics include a compact structure, rapid, convenient, and labor-saving operation, ensuring high machining accuracy and production efficiency. However, the design and manufacturing cycle is long, and manufacturing costs are high. When the product changes, the fixture becomes obsolete and is scrapped because it can no longer be used. It is only suitable for production with fixed products and large batch sizes. It contacts the positioning datum of the workpiece to determine the correct position of the workpiece in the fixture, thereby ensuring the correct relative position of the workpiece with respect to the cutting tool and the machining motion of the machine tool. It typically consists of positioning elements, clamping devices, tool-setting and guiding elements or devices, etc.

gemi Fixture Introduction

Vacuum suction cups are one of the actuators for 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 equipment, such as in construction, paper industry, printing, glass, and other industries, to perform tasks of holding and transporting thin and light items such as 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 the most economical method. 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; polyurethane suction cups are very 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.

gemi Fixture Classification

1) General-purpose fixtures: General-purpose fixtures are standardized and can be used within a certain range to process different workpieces. For example, three-jaw chucks and four-jaw independent chucks on lathes, vise jaws, indexing heads, and rotary tables on milling machines, etc. These fixtures are generally produced by specialized factories and are often provided to users as machine tool accessories. Their characteristics are wide adaptability and low production efficiency, mainly suitable for single-piece and small-batch production. 2) Special-purpose fixtures: Special-purpose fixtures are fixtures specifically designed for a particular operation on a specific workpiece. Their characteristics include a compact structure, rapid, convenient, and labor-saving operation, ensuring high machining accuracy and production efficiency. However, the design and manufacturing cycle is long, and manufacturing costs are high. When the product changes, the fixture becomes obsolete and is scrapped because it can no longer be used. It is only suitable for production with fixed products and large batch sizes. 3) Universal adjustable fixtures and group fixtures: Their characteristic is that some components of the fixture can be replaced, and some devices can be adjusted to adapt to the processing of different parts. Fixtures used for group processing of similar parts are called group fixtures. Compared with group fixtures, universal adjustable fixtures have less clearly defined processing objects and a wider scope of application. 4) Modular fixtures: Modular fixtures are fixtures assembled from a set of pre-manufactured standard elements and components according to the processing requirements of the part. Manufactured by professional manufacturers, their characteristics are flexibility, strong versatility, short manufacturing cycle, and reusable components, making them particularly suitable for trial production of new products and single-piece small-batch production. 5) Pallet fixtures: Pallet fixtures are a type of fixture used on automatic lines. This fixture not only serves to clamp the workpiece but also becomes integrated with the workpiece, moving along the automatic line from one station to the next for processing different operations.

gemi 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, which can address dimensional deviation issues. For cylindrical objects, double-jaw grippers can also be used for clamping. Note that retaining or encompassing clamping requires less force. 2) Part weight: The clamping force must be sufficient to hold the object securely while performing the required operations on it. 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 to the spatial requirements of the gripper jaws. If work is to be performed on the exterior of the object, internal clamping is required. Scissor-style grippers are usually lower in price but require more space for jaw movement. 4) Environment: Grippers used in harsh environments or cleanrooms require corresponding designs. 5) Object retention: When air pressure is no longer supplied, the gripper will release its hold on the object, causing the object to drop. For such applications, spring-assisted grippers can be used.

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