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Jacking height should not exceed effective jacking distance
Posted: 2019-5-24 0:07:46 Author: Branch of hydraulic jacks Source: hydraulic jack factory
The index for evaluating the skill of the machine tool can be attributed to the machining accuracy and the production efficiency.

(3) Jacking operation The jacking height of the jack should not exceed the effective jacking distance. When lifting large objects (such as large beams), both ends should be lifted separately, and one end should be raised and lowered, and the other end must be solid, firm, and stable. Jacks are not allowed to be overloaded. It is not advisable to start the jacks in a hurry. They should rise at a uniform speed. When the jacks are applied at the same time, they must be dull. When multiple jacks are applied at the same time, they must be operated simultaneously. Carry out cover maintenance and place

9, according to processing essentials or processing tools can be divided into lathes, drilling machines, boring machines, grinding machines, gear processing machine tools

The cutting process of the machine tool is realized by the relative movement between the workpiece and the workpiece. The movement can be divided into two types: outer forming movement and assisting movement. The outer forming movement is the movement that allows the workpiece to obtain the required outer shape and size. Main motion, feed motion and plunge motion

Fixture price (5) The pressure set at the time of delivery of the pump must not be arbitrarily advanced. (6) When the high-pressure hose is delivered, the pressure test is 1.25 times the rated pressure. Due to the aging of the gel, users should use it for a long time. Pay attention to introspection on a regular basis, and introspection once every six months. When introspecting the pressure test, leakage, protrusion or blasting occurs, you must replace the application, avoid discounts and sharp bends. At the same time, Fucheng is too close to the hose, and it is thrown away by explosion-proof rupture. Hurt

This group of machine tools is called the automatic cutting line

The main movement is the movement that is mainly influenced when the excess material is peeled from the workpiece blank. It can be the torsional movement of the workpiece (such as turning), the linear movement (such as planing on a gantry planer), or the torsional movement (such as Milling and drilling) or linear movements (such as plunging and broaching); the feed movement is the movement of the workpiece and the part to be machined, so that cutting can inherit the movement, such as the carriage slide along the machine guide when turning the outer circle Movement, etc .; the cutting movement is a movement with a certain depth to cut into the outside of the workpiece, and its effect is to cut out a certain thickness of material from the outside of the workpiece during each cutting stroke, such as the lateral cutting movement of the small frame when turning the outer circle

According to the processing accuracy, it can be divided into popular precision machine tools, detailed machine tools and high-precision machine tools;

The help movement mainly includes the rapid approach and withdrawal of the tool or the workpiece, the adjustment of the position of the machine tool components, the workpiece indexing, the rack indexing, the feeding, the start, speed change, reversing, completion, and automatic change. The dimensional accuracy, shape accuracy, position accuracy, external quality and accuracy of the machine tool are maintained. The temporary efficiency involves cutting time and helping time, and the level of automation and reliability of the machine tool.

You can understand the drive system diagram as usual

These indicators depend on the static characteristics of the machine tool, such as static geometric accuracy and stiffness; on the other hand, they have a greater relationship with the dynamic characteristics of the machine tool, such as motion accuracy, dynamic stiffness, thermal deformation, and noise.


The cast iron slabs with a large size of 1000mm × 1000mm should be added to support the supporting point. The bonding agent refers to the materials bonded by the various bonding agents and abrasives in the aggregated abrasive. The binders of the different kinds of binders can be divided into inorganic binders and organic binders. Resin binders for superhard materials and abrasive tools. The price of the fixture is composed of a thermosetting resin as a binder and various fillers. The properties and the amount of properties have a great influence on the physical function, machine function and grinding function of the bonding agent. Therefore, the material and function of the workpiece must be selected in order to achieve superior application effects.
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