What does spinning do 100

Spinning. spining

The stamping and forming process in which the slab and the mandrel rotate together, and the rollers feed and apply pressure to make the slab close to the mandrel and deform it point by point (see figure [spinning principle]). Spinning can manufacture various axisymmetric rotating body parts, such as speakers, bullet bodies, high-pressure vessel heads, gongs; It can also be used for gas cylinder closing, billet forming, etc. The characteristics of spinning are:

A large workpiece can be formed with a small deformation force; The use of equipment is relatively simple, small and medium-sized thin plates can be spun by ordinary lathes; The mold is simple, only one piece of core mold is needed, and the material requirements are low. Spinning is suitable for small batch production, because it can only process rotating parts, which is more limited and has low productivity. Spinning can be done by specialized machinery, using copy spinning and digitally controlled spinning.

The process of thinning the plate thickness while spinning forming is called thinning spinning, also known as strong spinning, which is mostly used for processing conical parts, thin-walled tubular parts, etc., and can also be used to spin large diameter deep cylinders, and then cut them to make flat plates.

Spinning is to fix the flat or hollow blank on the mold of the spinning machine, and at the same time that the blank rotates with the bed spindle, it is pressurized on the blank with a rotary wheel or a rod to produce local plastic deformation. Under the joint action of the feed movement of the rotary wheel and the rotary motion of the blank, the local plastic deformation gradually extends to the entire surface of the blank, and is closely attached to the mold to complete the spinning processing of the part.

The advantage of spinning processing is that the equipment and molds are relatively simple (when there is no special spinning machine, it can be replaced by a lathe), in addition to forming rotating bodies such as cylindrical, conical, parabolic formation or other curves, it can also process quite complex shapes of rotating body parts. The disadvantage is that the productivity is lower and the labor intensity is larger, which is more suitable for trial production and small batch production.

With the production of aircraft, rockets and missiles, thinning spinning (also known as strong spinning) was developed on the basis of ordinary spinning.

Spinning technology, also known as metal spinning forming technology, is a technology that rotates to make the stress point from point to line and line to surface, and at the same time gives a certain pressure in a certain direction to deform and flow metal materials along this direction to form a certain shape.

The spinning machine is a metal plastic forming machine, which occupies a small space, is easy to install, and does not need to be fixed with anchor bolts. The main structure is variable speed coupling transmission and center epitaxial spinning. It is mainly composed of power transmission system, rotary forming system, adjusting device, positioning device and molding, and the rotary pressing system includes spinning wheel, forming wheel, clamping device and deceleration parts.

It can be applied to the spinning of steel sheets up to 14 mm thick, as well as to the one-time spinning of stainless steel, aluminum and other metals.

The spinning machine is the mechanical equipment for forming spinning. It can clamp the blank on the forming die shaft, drive them to rotate through the double shaft, and at the same time weight the setting extrusion of the forming wheel on the outside, so that the metal blank is deformed, and finally get the desired shape of the part. It has great advantages in the production of thin-walled high-precision parts, and is widely used in chemical, shipbuilding, aerospace and other industries.

All plastic materials can be spinned.

The most common spinning parts are mild steel and stainless steel, and copper and aluminum materials are relatively easy to spin forming.

Spinning forming process is a guide book published by the Chemical Industry Press, this book is mainly used by technicians engaged in spinning forming research and production, and can also be used by professional and technical personnel working in rotary forming and other aspects and undergraduate high school of material processing disciplines in various universities.

Introduction. The spinning forming process is an advanced forming process method that makes the blank continuously and locally plastic cumulative forming into a hollow rotary part. This book systematically introduces the basic method of spinning forming, metal spinning process, spinnability test, calculation of force and energy parameters and introduction of spinning equipment.

This book is mainly used by technicians engaged in spinning forming research and production, and can also be used as a reference for professional and technical personnel working in rotary forming and other aspects and undergraduate senior students and graduate students in material processing disciplines in various universities.

Reference for grade students and graduate students.

Spinning technology is a traditional technology with a long history, according to the literature, it first originated in the Tang Dynasty in China, and the metal spinning process was developed from the pottery process. After the middle of the 20th century, with the development of industry and the development of the aerospace industry, the general rotation process was widely used in the field of sheet metal forming, thus promoting the research and development of the process. Since the middle of the twentieth century, there have been significant advances in the following three aspects:

First, the ordinary spinning equipment is gradually mechanized and automated, and in the 50s of the 20th Zheng Dynasty, there was a simulated manual spinning equipment, that is, the hydraulic booster and other driving rotary wheels reciprocated to achieve feed and return, thus reducing the labor intensity. Second, in the 60s and 70s of the 20th century, there was a semi-automatic spinning machine that can be one-way multi-pass feeding, and the electro-hydraulic program control was introduced. Third, due to the development of electronic technology, in the late 60s of the 20th century, foreign countries developed CNC and record back spinning machines on the basis of semi-automatic spinning machines.

The rapid development of these equipment has brought the spinning process into the mass production of medium and head heads.

Strong spinning was developed in the fifties of the last century on the basis of ordinary spinning, and was first used in private industries in Sweden and Germany (for example, processing pots and other containers). Due to the advancedness, economy and practicability of the spinning process, and the process has the characteristics of small deformation force and saving raw materials, in the past 40 years, the spinning technology has been greatly developed, not only in the aerospace field, but also in the chemical, machinery, light industry and other civil industries have been widely used. At present, spinning technology has become more and more mature and has become a new field in metal pressure processing.

Technology was first introduced in 1924 and has developed very rapidly in recent years.

The basic principles of metal spinning technology are similar to those of ancient pottery production. The spinning parts are generally rotary barrel parts or disc parts of the bumper cover, and the spinning parts blank is usually a thick-walled cylindrical part or a round sheet. The principle and structure of the spinning machine are similar to those of metal cutting lathes.

At the position of the large carriage of the lathe, it is designed as a rotor frame with axial motion power, and the rotor that is fixed on the rotor frame can move radially; Coaxially connected with the main shaft is a mandrel (shaft), and the spinning blank is sleeved on the mandrel (shaft); The rotary wheel reverses and passively rotates passively through the friction generated by contact with the blank on the mandrel (shaft chain); At the same time, the rotor frame moves axially under the action of the axial high-thrust cylinder. Under the joint action of axial and radial forces, the rotary wheel frame implements point-by-point continuous plastic deformation on the surface of the billet. In the position of the tail top support of the lathe, it is designed to be the tail top hydraulic cylinder with the same axis as the spindle, and the hydraulic cylinder applies axial thrust to the billet end face that is sleeved on the mandrel (shaft).