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Engineering machinery cardan drive shaft: mechanical engineers should master all kinds of machine knowledge!

Views: 2     Author: Site Editor     Publish Time: 2022-08-05      Origin: Site

Engineering machinery cardan drive shaft: mechanical engineers should master all kinds of knowledge!

We compare several processing equipment for mechanical processing industry to make a general analysis and understanding, let us went up from the perceptual processing equipment of the industry have a relatively clear and clear definition, at the same time can also went up from theory to a variety of processing equipment for certain, so that in the future work to better the combination of practice, So as to further guide our work, help our work. Our introduction around the machining industry's most general vehicle, milling, planing, grinding, boring, drilling, wire cutting and other processing equipment to discuss, and for these types of processing equipment, scope of application, structural characteristics and processing accuracy to do further detailed elaboration, the following into the topic.

1. Lathe

1)  Types of lathes

There are many types of lathes. According to the statistics of a mechanical processing technician's manual, there are as many as 77 kinds. The typical categories are: Instrument lathe, uniaxial, multi-axis automatic or semi-automatic lathe, automatic lathe back wheel or turret lathe, crankshaft and camshaft lathe, vertical lathe, landing and horizontal lathe, copying and many knives, shaft roller spindle and relieving lathe and so on, which is divided into many small categories, quantity, and which are frequently used in our machinery industry is and horizontal lathe, vertical lathe These two lathes can be found almost everywhere there is machining.

2)  The scope of application of lathe processing we mainly choose several typical lathe types to introduce the scope of use of processing.front axle u joint shaft cost - Xinsanming

A. horizontal lathe, can be used for turning internal and external cylindrical surface, conical surface, forming rotary surface and annular groove, turning section and all kinds of threads, can be drilling, reaming, reaming, tapping, sleeve thread and knurling and other processes processing. Although common horizontal lathe with low degree of automation, or more auxiliary time, and in the process of machining but because of its wide processing range and good general performance, this type of machine tools in mechanical machining industry has been widely used and popular, is our machinery industry one of the typical representative of the processing equipment, is also one of indispensable processing equipment machinery processing industry.

B. vertical lathe, suitable for the processing of all kinds of frame, shell parts, also suitable for the processing of all kinds of parts inside and outside cylindrical surface, conical surface, end face, groove, cutting and drilling, expanding, reaming and other processing, with the help of additional devices can also be realized thread, end face, copying, milling and grinding processing.

3)  Machining accuracy of lathe

A. The machining accuracy of the usual horizontal lathe is as follows: roundness: 0.015mm; Cylindricity: 0.02/150mm; Flatness 0.02/¢150mm; Surface roughness: 1.6Ra/μm.

B. The machining accuracy of vertical lathe is as follows: roundness: 0.02mm; Cylindricity: 0.01mm; Flatness 0.03mm. Machining accuracy is only a relative reference, does not represent all lathe, a lot of lathe equipment according to the specific requirements of manufacturers and the specific situation of the assembly has a certain amount of floating up and down, but no matter how big the float amount is, the processing precision value must be meet the requirement of national standard of the equipment, if in the purchase of the equipment, If the processing accuracy does not meet the requirements of the national standard, the purchaser has the right to refuse to accept and pay.

2.  Milling machine

1)  Milling machine type milling machine type is also complex and diverse, according to the statistics of a mechanical processing technician manual up to more than 70 kinds, more typical categories are: Instrument milling machine, cantilever and ram milling machine, gantry milling machine, plane milling machine, copying milling machine, vertical milling machine, horizontal lift milling machine, lathe bed milling machine, milling machine tools, etc., which is divided into many small categories, quantity, and which are frequently used in our machinery industry is a vertical machining center and gantry machining center, There are almost machining places can see these two types of milling machine, we also for these two typical milling machine to do a general introduction and analysis.

2)  The processing scope of milling machine

Because there are too many types and structure of milling machine, and the wide range of application also has a great difference, so we pointer to the most commonly used vertical machining center and longmen machining center two typical milling machine to do a processing range introduction.

A. (pictured above), vertical machining center, vertical machining center for actual knife library of vertical CNC milling machine, its main characteristic is using multipoint rotary cutting tools for machining, can be flat, grooved, gear parts, spiral surface and all kinds of surface processing, especially with the application of numerical control technology, this type of machine tool processing range also got A lot of ascension, In addition to a variety of milling operations, but also can drill, boring, reaming and tapping the workpiece and other composite processing, has a very broad practical and universal significance.

B. Longmen processing center, and vertical processing center, longmen processing center is CNC longmen milling machine tool library compound application, in the processing range, longmen processing center almost has all the processing capacity of ordinary vertical processing center, and in the shape of the parts can adapt to the larger tools processing, At the same time, there are also very big advantages in processing efficiency and processing accuracy, especially the practical application of five-axis connected longmen processing center, its processing scope has also been greatly improved, laying a foundation for the development of manufacturing industry in the direction of high precision.

3)  Machining accuracy of milling machine:

A. vertical machining center: flatness: 0.025/300mm; Rough excess capacity: 1.6Ra/μm.

B. Longmen processing center: flatness: 0.025/300mm; Rough excess: 2.5Ra/μm. Machining accuracy is only a relative reference, does not represent all conform to the milling machine, a lot of milling machine equipment according to the specific requirements of manufacturers and the specific situation of the assembly has a certain amount of floating up and down, but no matter how big the float amount is, the processing precision value must be meet the requirement of national standard of the equipment, if in the purchase of the equipment, If the processing accuracy does not meet the requirements of the national standard, the purchaser has the right to refuse to accept and pay.

3. Planer

1)  The type of planer relative to the lathe and milling machine, the type of planer is much less, also according to the statistics of mechanical processing technician manual there are about 21 kinds, more typical types are: Cantilever planer, planer and the shaper, edge planing machine and mould, etc., these categories is divided into many small type planer products, and we are in the machinery industry utilization rate is highest, the most widely penetration should belong to the shaper and the double housing planer, as shown in the above, we here also is for the two kinds of typical planer to make a basic analysis and introduction.

2)  The processing scope of planer

Planer cutting movement is mainly relative machining cycle between rectilinear motion, its applicable planing part features for planar, slope and concave and convex surface processing, can also according to various surface planing, but because of the limitations of its processing characteristics, processing and cutting speed is not too high, planer knives for machining and return trip is not involved in parts processing, Therefore, the empty stroke loss is caused, and the processing efficiency is relatively low. At the same time as the other kinds of CNC machining equipment and automation technology promotion, planing processing methods were on the brink of being replaced gradually, from a lot of equipment to upgrade now to run, this type of machine tools has not been a big upgrade innovation, to a large degree or stay in the original structure and layout, Especially the development of vertical machining center and longmen processing center, and continuous innovation of processing tools, but also in the processing scope greatly replaced the processing advantage of planer, so that the processing efficiency is relatively low equipment in a very awkward situation.

3)  Planer machining accuracy of planer machining accuracy generally can reach IT10-IT7 precision grade, especially for some large machine tools long guide surface processing can even replace grinding processing, this is the so-called "fine planer instead of fine grinding" processing method.

4. Grinder

1)  Compared with the previous several types of processing equipment, there are many types of grinding machines. According to the statistics of a mechanical processing technician's manual, there are about 194 kinds, which can be divided into: Instrument grinding machine, external grinding machine, internal grinding machine, grinding machine, coordinate grinding machine, guide grinding machine, cutting tool grinding machine, surface and end grinding machine, crankshaft camshaft spline and roller grinding machine, tool grinding machine, super finishing machine, internal honing machine, external circular and other honing machines, polishing machine, belt polishing and grinding machine. Tool grinding and milling machine, grinding machine, grinding machine, indexable insert ball bearing ring groove grinding machine, roller bearing ring raceway grinder, bearing ring superfinishing machine, blade grinding machine, roller machine, ball grinding machine processing machine tools, valve piston and piston ring, car tractor grinding machine tools, and other types, because of the grinding classification and should be too broad, And many grinders are some specific equipment in a specific industry, so we pointer to the universal use of the grinder in the mechanical industry to do a basic introduction, in this article, we mainly choose the cylindrical grinder and surface grinder to do a brief description.

2)  The processing scope of grinding machine

A.cylindrical grinder, cylindrical grinder is mainly processing cylinder, the outer surface of the conical surface or other solid of revolution and the shaft shoulder end face, because of its good adaptability and machining precision, are widely used in machining of some high precision parts processing, especially in these parts at the end of the finishing process is widely used, It can not only maximize the guarantee of the geometric size of the processing parts, but also can achieve better surface finish requirements, so it is one of the indispensable equipment in the machining process.

B.  surface grinding machine, it is mainly used for processing plane, the step surface and lateral surface of parts, in the machinery industry is also used very widely, especially in some high precision parts processing, on the surface of the grinding machine is almost the last to ensure the machining accuracy of choice, and also because of this, the use of surface grinding machine is a compulsory course for most grinding operator, Even in some equipment assembly industries, the use of surface grinding machine is the standard skill of assembly personnel, because the grinding of various adjustment pads in the assembly process depends on the surface grinding machine to complete.

3)  The processing accuracy of the grinder

A. Machining accuracy of external circular grinder: roundness and cylindricity: 0.003mm; Surface roughness: 0.32Ra/μm.

B.surface grinding machine processing accuracy: parallelism: 0.01/300mm; Surface roughness: 0.8Ra/μm. From the above processing accuracy, we can also clearly see that compared with the front of the lathe, milling machine, planer and other processing equipment, grinder can achieve higher behavior tolerance accuracy and surface roughness, so in the finishing process of many parts, grinder is widely and universally used.

5. Boring

1) The type of boring machine compared with the previous types of processing equipment, boring machine also belongs to a relatively small number of processing equipment, according to the statistics of a mechanical processing technician manual there are about 23 kinds, from its categories can be divided into the following: Deep hole boring machine, coordinate boring machine, vertical boring machine, horizontal milling and boring machine, fine boring machine, car and tractor repair boring machine and so on, among which the most common and most commonly used boring machine in our machinery industry should be the flying coordinate boring machine, we also on some characteristics of the coordinate boring machine to do a brief introduction and analysis.

2)  Processing scope of application of the boring machine boring machine type variety, we will coordinate boring machine to do a brief introduction, you may be one instance to learn other types of boring machine, coordinate boring machine is a precise coordinates positioning device of precision machine tool, mainly used for boring size, shape and location accuracy requirement high hole, Can perform drilling, reaming, reaming, 鍯 end face, such as cutting, milling surface processing, can also coordinate measurement, the precision calibration and scribed line, etc, have very extensive and reliable processing features. But with the development of numerical control technology vigorously, especially CNC vertical milling machine and CNC developing of horizontal milling machine, boring machine the hole once overlord of processing equipment, has gradually replaced the danger, of course also have irreplaceable objective side, but no matter what the death of equipment or development, for mechanical processing industry is a kind of progress, is the progress of technology, It is also the progress of technology, but also the progress of our country's manufacturing industry.

3) Machining accuracy of the boring machine the aperture accuracy of the boring machine is generally IT6-7, and the surface roughness is 0.4-0.8Ra/μm. But boring machine processing has a very bad place, especially in the processing of cast iron parts, that call a dirty ah, a white flour niche walk into, jumped out a zhang fei li kui, there is a finish boring machine, the feeling of recognition, so based on such a processing link the reality of reason, the possibility of this kind of equipment be replaced in the future are also on the increase, Because who doesn't care what they look like? As soon as possible, a lot of people don't, but we need to act like we're good.

6. Drilling machine

1)  the type of drilling machine which is the most widely used mechanical industry processing equipment, if anyone is a mechanical processing factory, will have a basically, if it doesn't even have the processing equipment, you are embarrassed to say you are dry processing, according to a mechanical processing craft manual about 38 kinds of left and right sides, according to the categories can be divided into the following kinds: Coordinate boring and drilling machine, deep hole drilling machine, radial drilling machine, bench drill, vertical drilling machine, horizontal drilling, milling, drilling, center hole drilling machine, etc., and we are the most commonly used in machinery industry is the radial drilling machine, just we machining standard of the industry, not the device, you will most likely be unable to do this industry, also because of this, Let's focus on this kind of drilling press.

2)  drilling machine processing scope we are mainly to the radial drill to explain, for this kind of machine, I have but one thing here, is the various types of holes, in addition to drilling can also achieve reaming, reaming, 鍯 hole and tapping screw thread processing working procedure, but it has a big problem, the hole position precision is not high, so for some hole location accuracy requirement high parts, We usually do not choose the drill press to achieve.

3) Drilling machine processing accuracy because basically there is no processing accuracy at all, just drills a hole.

7. Wire cutting

For wire cutting the processing equipment, I because of contact is not a lot, so there is no in this regard have accumulated a lot of, also does not have to do a lot of homework, so in limited on the breadth of the use of mechanical industry, but also has its unique value, especially for some special parts of the material and processing, there are still some comparative advantage, But in view of its low processing efficiency and the vigorous development of laser machine, wire cutting processing equipment is also gradually walking in the edge of the industry to be eliminated.

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  : +86 29 86033971
 : +86 29 86033972
  :  zhao.wanbao@dcsxsm.com
  : The Innovation Industrial Park, No.36, Jingwei Road ,Xi'an Economic and Technological Development Zone,Xi'an City,Shaanxi Province,China
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