Conception of the hottest tool to realize precisio

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Tool conception to realize precision reaming

in the design of industrial instruments, in order to make the components accurately reach the required position, the application of adjustment devices is a commonly used method. However, the possibility of adjustment also depends on the accuracy that can be achieved when making the corresponding parts

when using precision tools, its adjustment is mainly concentrated on cutting and clamping. During cutting, the machining error of its base plate and the error of replacing cutting elements can be compensated by adjustment. About the structure and daily maintenance of the spring testing machine. When clamping, the radial runout and angular error of the machine tool spindle and tool system are compensated by the adjustment in the cycle. In the research and development work, for example, the design of HSK for cutting parts must meet the general requirements when simple spindle tool replacement is carried out, and only when there are special requirements for extension length and tolerance, some adaptive adjustments need to be made. When making such adjustment, all consumption should be kept within a certain range, because generally, there will be similar adjustment only when the system is installed

different phenomena can be observed in adjustable cutting. When the adjustment work is often associated with the corresponding measurement process in the machine tool, and thus causes shutdown and production interruption, the adjustment becomes a special interference. Modern tool conception and tool replacement device design must try to achieve the purpose of simple operation, so that the machine tool can finally improve economic efficiency and productivity

new idea of precision reaming machining

reaming is a widely used traditional process method to achieve the purpose of precision reaming in metal materials. The two main tasks of this cutting tool are to achieve relatively small cutting depth and certain accuracy in the machined hole. Multi cutting edge reamer was the only tool adopting this process for a long time. In the development process of reaming tools, the use of MAPAL cut in reamers is considered to be a landmark reform. It brings greater advantages in chip separation and guidance, as well as in terms of achievable precision range and significantly higher cutting speed. In addition, the cutting edge of this tool can also be changed and accurately adjusted by the user, eliminating the logistics service required in the grinding process, and the profit margin of the global glass fiber safety and protection products supply market will reach 20%

however, from the user's point of view, the ability to manually adjust the cutting edge is of course the advantage of adjustable cutting edge, and it is also a small pity that the cutting edge must be adjusted at some times. The power performance and matching performance of the traditional multi cutting edge reamer are often limited, because although people do not have to adjust it, this kind of cutter does not provide the function of adjustment. Now, the new cut in reamer provides a solution to the shortcomings of this fixed combination. People can adjust this new reamer, but this does not mean that it must be adjusted. By simply changing and clamping the cutting edge, the plug-in tool and rotary table with higher and more stable accuracy can be reproduced, so as to process holes with millimeter accuracy

in addition to the high component accuracy, the whole system configuration corresponding to this new requirement is also necessary. In order to reduce the two common adjustment tasks to one, it is necessary to accurately place the rotary table on the basis of all. Using a rotary table to readjust a few millimeters, the required reaming diameter can be adjusted absolutely accurately. The time consumption required for this is far lower than that of the two adjustments still used so far, because many step-by-step adjustments between the front and rear adjustment screws are omitted. In the case of multiple machining processes, it is not even necessary to adjust the rotary table in this new tool, so that the requirements of the established allowable tolerance can be achieved. If the cutting is carried out with a precision of several millimeters, the tool can be clamped reliably with the help of the clamping notch inserted obliquely

replacement and regrinding

another design to solve this contradiction is the multi cutting edge reamer. Here, first aim at the part that can easily and accurately replace the cutting edge. The tool head assembly device (HFS) involves precision, stability and various applications, and gives priority. In order to further improve the economy of multi cutting edge reamers processed within a narrow tolerance range, a telescopic reamer for replacing the cutter head device was developed. Especially in the application of expensive cutting materials such as PKD or PKB, the diameter has the possibility of readjustment, which improves the safety and economy of the cutting process when using this new tool. For example, when machining with PKD cast cutting edge or PKB hardened cutting edge, the best utilization effect of this kind of cutting edge can be achieved. In addition to the tensile deformation of the specimen between the two fixtures to varying degrees, the diameter of the product can also be adapted according to the material and other conditions

reduce machine tool shutdown

as has been mentioned, adjusting in the machine tool is a particularly troublesome process, and the cost is very high, because the lathe must stop during adjustment, resulting in production downtime. A typical example is the linear boring bar for machining the crankshaft bearing hole in the cylinder block. Most of the boring bars used in special machine tools are equipped with as many as 27 cutting edges, which are accurately adjusted and fixed in the machine tool to prepare for the replacement of cutting edges. At the same time, gauges should be used so that millimeter level accuracy adjustment can be made. The time consumed in this process varies according to the number of cutting edges, and each cutting edge consumes about 2 ~ 3 minutes. If the cutting edge is replaced in the fixture with HFS replacement device, it will be simple and fast. On a simple auxiliary adjustment table outside the machine tool, adjust the height of the cutting edge device when replacing the plug-in, so as to facilitate replacement. At the end of the use time, only the plug-in needs to be replaced, and the replacement time required for each position is about 30 seconds

safe and economical solution

with the help of new devices and the additional performance obtained by continuing to develop processing skills, special tools can get many new ideas on the test bench. A typical example is the machining of the valve seat in the cylinder head, which is mostly combined with the valve guide sleeve. The valve seat is sometimes punched and sometimes turned. Usually, the punching method is applied. Most of the tools used can machine the three edges and corners of the valve ring at the same time. The critical tolerance of the edges and corners shall ensure the tightness. So far, precision adjustment has not been omitted, and the consumption of adjustment cannot be replaced, not only in the base plate seat, but also on the rotary table. The high-precision cutting tool with hexagonal HX precision cutting edge has brought a breakthrough. With the help of the shape of the rotary table and the specially configured clamping device, in the case of simple rotary replacement, the position of the tool does not need to be adjusted to ensure that the machining results required by the common method can be accurately achieved again. The compact structure of this new device also brings other advantages. With the help of a few structural parts of the rotary table and the higher stability that can be obtained by rapid placement, the durability time is improved compared with the adjustable tool. In addition, it is also very important to occupy little space, and structural components can be considered in the case of small size. If this valve seat machining tool is used in combination with the valve guide sleeve machining tool with single edge or multi cutting edge structure with HFS replacement device, it will produce high-precision machining tools, which can be put into use as another solution not only to start the oil pump and send oil to make the piston rise for a distance of about 5 (1) 0mm, but also to make the machining process safe and low-cost. It is usually difficult to find the easiest solution. The new simple tool concept shows that it is possible to reduce most of the consumption and simplify some complex processes

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