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Working principle of slow wire processing

 Slow wire walking, also called low-speed wire walking, is a kind of CNC machining machine tool that uses continuously moving fine metal wire as an electrode to pulse spark discharge on the workpiece to generate a high temperature of over 6000 degrees, ablate metal and cut into a workpiece. The principle of wire processing is the phenomenon that there is a gap between the wire electrode and the workpiece, and the metal is removed by continuous discharge. Since the slow-moving wire cutting machine adopts the method of wire electrode continuous feeding, that is, the wire electrode is processed during the movement, so even if the wire electrode is worn out, it can be continuously supplemented, so it can improve the machining accuracy of the parts and slow the wire. The surface roughness of the workpiece processed by the cutting machine can usually reach Ra=0.8μm and above, and the roundness error, linear error and dimensional error of the slow-moving wire cutting machine are much better t

Hydrostatic guideway of CNC machining lathe

The static pressure slide rail (TTW guide) of the CNC machining lathe transfers the oil with a certain pressure through the throttle to the oil cavity between the sliding surfaces of the slide rail (TTW guide) to form a pressure oil film to float the moving parts , Make the sliding rail (TTW guide) surface in a pure liquid friction state.   CNC machining General CNC machining usually refers to computer digital control precision machining, CNC machining lathe, CNC machining milling machine, CNC machining c17200   beryllium   copper   and milling machine, etc. The feed route of finishing is basically carried out along the part contour sequence. Therefore, the focus of determining the feed route is to determine the feed route of rough machining and idle stroke. In the numerical control processing, the control system issues instructions to make the tool perform various motions that meet the requirements, and the shape and size of the workpiece are expressed in the form of numbers and lette

Introduction of KOVAR parts

KOVAR parts are commonly used as metal casing materials in the electronic packaging industry. Because they have a linear expansion coefficient close to that of molybdenum group glass, and can produce less sealing stress during the sealing (melting) process with molybdenum group glass, so To obtain good air-tightness, in order to make the metal tube and shell to achieve air-tight sealing, in the entire sealing process, the annealing process undoubtedly plays an important role as a link between the previous and the next. The internal stress generated during KOVAR  machining also prepares the material structure for the implementation of the subsequent process-the sealing process of the metal parts. The main purpose of annealing Kovar shell before sealing is to: (1) Eliminate machining stress. When Kovar undergoes plastic machining deformation during cold working, about 10% to 15% of the applied energy is converted into internal energy, which is commonly referred to as internal stress,

Weakening the function of auto parts warehouse to raise the risk tolerance

If the order cycle is one month, the moving cylinder, brake drum, brake shoe, etc. generally account for the annual sales volume of the parts when the inventory is lower than the target inventory of the parts. When the target body of the accessory, crankshaft, clutch pressure plate assembly, transmission housing, and inventory are the annual sales of one piece, the target inventory of the axle housing, generator assembly, starter assembly, etc. is one piece. When the annual sales volume is about one accident vehicle, which generally accounts for the total inventory, the target inventory of this accessory is one.

Take one for rational use parts such as front and rear bumpers, headlamp assemblies, and accessories whose annual sales are higher than the number of pieces. The radiator assembly, windshield glass, fenders, and door components, if the supply time is longer, account for the order cycle, etc., generally account for about the total inventory. If above, the alert inventory will inevitably increase.

When the annual sales volume is calculated, the inventory of wearing parts, maintenance parts, and warnings exceeds the target inventory, “Repairing common parts can account for about the total sales volume, and the formulation of the order plan will largely depend on its inventory. However, the total amount of inventory is not visible. As for the forecast of the sales of accessories, once the market changes the turnover of these three types of accessories is faster and the other two types of distribution forecasts are inaccurate, it will cause a large backlog of accessories.

Due to the slower turnover of pieces. Therefore, in order to increase funds, from the perspective of improving the accuracy of ordering, and to reduce capital occupation, it is necessary to ensure sufficient supply of the first three types of allocation inventory, which is generally based on the target inventory.

At the same time, the ordering cycle of the latter two types of accessories is generally double the delivery time. This should be taken seriously. The timely adjustment of inventory must ensure that the samples can be ordered according to the actual sales and supply during the ordering plan, and reduce the inventory backlog to avoid occurrence. The target inventory is adjusted to avoid inventory effectively.

causes a backlog of accessories. Reasonable determination of the ordering cycle and the number of orders will help reduce the equivalence factor of parts inventory according to the local geographical environment characteristics and repair technology. To reduce the target inventory of some parts, it is necessary to reduce the target of each corresponding adjustment type of parts. inventory.

The target inventory of accessories should be adjusted according to the geographical environment characteristics of each place. A quantity refers to the target inventory of some accessories from the perspective of meeting the needs of users for accessories. If you start from a certain location, within a certain period of ordering cycle, if you build mountainous areas or hills, the inventory of brake system accessories should be at the highest inventory of a certain accessory.

The order cycle refers to an increase on a regular basis. If it is located in a mining area, there is no time interval between two normal ordering of accessories.

Influencing air filters, pistons, piston rings and other engine parts library affect the target inventory because the stock should be appropriately increased. If the road conditions in this area are poor, it is known to formulate spare parts such as tires, shock absorbers, suspensions and other accessories should be fully stocked .

The business of purchasing planners should also reasonably adjust the level of spare parts demand inventory according to seasonal changes. Seasonal changes, the operating environment of the vehicle, and the accuracy of its predictions. Certain use performance also changes accordingly. The degree of satisfaction of user needs. The content of vehicle maintenance operations should be adjusted accordingly. The probability and order cycle of this all require the supply of accessories. Adjust accordingly.

When the summer comes, the average target inventory of cooling system, air conditioning and refrigeration system accessories should be increased accordingly. When the severe winter comes, the sales volume also affects the target inventory of antifreeze and heating system accessories.

The automotive parts and parts machining, PTJ Shop offers the highest degree of OEM service with a basis of 10+ years experience serving the automotive industry. Our automotive precision shop and experts deliver confidence. We have perfected the art of producing large component volumes with complete JIT reliability, backed by the quality and long-term reliability our customers expect.

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