There is a connection gap between the positioning sleeve core and the positioning sleeve, between the positioning sleeve core and the bearing hole supported at both ends, and between the central screw seat and the screw seat, so large coaxiality error between the bearing hole and the screw seat is often installed, which increases the temperature, thermal deformation and transmission torque of each link of the screw seat system, and causes the increase of screw disturbance and radial eccentric load. The servo motor is overloaded and overheated, the shearer is cheap, the installation is exquisite, the after-sales service is perfect, and the servo system alarms, which affects the normal operation of the machine tool. In addition, the actual difference between the bearing hole and the foundation hole at both ends of the AC center line can not be measured very accurately, which affects the further very accurate adjustment. For the CNC machine tool of the three-axis centrifugal machining center, because the required mandrel is larger than 1500mm, it is difficult to process and process. It's not easy to guarantee accuracy. Therefore, it is not possible to install the ball screw pair by matching the mandrel with the locating sleeve, but by using the horizontal machining groove method. Due to the large three coordinate stroke of the machine tool, the coaxiality between the two bearing holes and the center line seat hole exceeds the standard. Due to the excessive load of servo motor, high temperature of servo system and alarm of servo system, the radial and eccentric load of ball screw increases, which makes the machine unable to work continuously and strictly at the same time, and seriously affects the service life and transmission accuracy of ball screw. D. shorten the inspection and maintenance cycle of the main engine, appropriately adopt the charging methods such as moving the saddle and shortening the distance between the screw block and the bearing block, and apply the shear force to the metal plates of different thickness by moving up and down and fixing the lower blade to break them. And according to the size of the need to separate, both ends of the screw block and bearing block can be separated from the center, because the need to separate two sections, in addition to the obvious gap between the inspection rod and the inspection sleeve, regardless of the consequences of practical application, through field technical research, repeated exploration and field verification, summed up a set of more reliable assembly process.

When the bending gear of the shearing bending machine starts bending, the screw seat hole is calibrated with the integral special mandrel, so that the parallelism between the screw seat hole and the reference guide rail hole does not exceed 0.01/1000; after the screw seat is fixed, the positive and horizontal spacing between the screw seat holes is 0.01/1000. The professional measuring fixture is used to measure the f-wire seat and the reference guide rail, and then the whole special mandrel is used to calibrate the front and side of the bearing seat hole and the reference guide rail because it is considered appropriate. When the azimuth parallelism is 0.01/1000, the special measuring fixture is used to measure the normal and side. The transverse distance between the bearing hole and the reference guide rail requires that the positive and transverse distance between the mother hole and the reference guide rail is absolutely the same, and the tolerance is 0.01; when the bearing seat is fixed, the integral special inspection rod is used when it is considered appropriate, and the length is not only short, and the mandrel and the positioning sleeve are combined into one, and the clearance between the T mandrel and the positioning sleeve at the connection is cleared to ensure that the bearing hole and the screw seat hole are parallel to the guide rail. The measured results show that the coaxiality of the supporting hole and the screw holes at both ends also depends on the disturbance, which reduces the circumferential and radial eccentric load of the ball screw pair and improves the installation accuracy of the ball screw pair on the shearing machine. In the installation process of the ball screw pair, its axial movement must be strictly controlled to ensure the processing accuracy. This technical index will directly affect the transmission position accuracy of the screw feed system, and the axial movement of the rod is controlled in the range of 0.015 ~ 0.02.

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It can also be used to control the shearing circuit. It is considered appropriate to adopt modern power electronic technology to control the switching time ratio, keep the output voltage stable and ensure the stability of the circuit control of the shearer.

It is usually considered that the concept of reinforcement coefficient is suitable for those who have some experience in the reinforcement mechanism of plate shears. It is an important index to analyze the reinforcement mechanism or assembly of plate shears. The force increment coefficient near the shear force, that is, the ratio of output force to input force, can fully reflect the performance of the reinforcement mechanism of plate shears. With the increase of mechanical efficiency ratio, the supercharging efficiency is improved; similarly, the combined series type which is suitable for the application of force amplifier is the product of each force amplifier or assembly when calculating the force amplifier coefficient. Apply starting point shears to strengthen technological innovation. Shockley, who made transistor crystal tubes, once said: "creation is a combination of tools." therefore, in a sense, scissors are used to cut metal sheets of various thickness by moving the upper edge and fixing the lower edge, and using reasonable blade gap, so that the metal sheets can be broken and separated under the action of alternating current. According to the required size. Whether it is the improvement of old products or the design of new products, it is a kind of innovation and creation. Therefore, it is not only a practical and innovative application, but also a specific innovation to use the force increasing technology to connect the basic force increasing mechanism or the new design assembly in series. Shear force increasing technology.

Installing the O-ring on the gasket can compress the O-ring at the lower end of the steel sleeve, increase the inner diameter of the gasket 2, and effectively prevent air leakage. During the implementation, the thickness of the steel sleeve must be exactly the same as that of the stop ring. Not only can it be installed, but also the steel sleeve can roughly press the O-ring without water leakage. After careful measurement and hard calculation, this problem is finally solved. Is a professional engaged in shear, bending machine research and development, production and sales of enterprises. After adjustment, the application will not be leaked, and the wine order will be run. The hidden trouble in the pot for one year has been solved by replacing the seal with the agreed scissors. In just three days, the manufacturer of the plate shearer completed this task, which not only ensured the timely maintenance and operation of the equipment, but also made the workshop smoothly, saving the funds required for the agreed purchase or the agreed purchase of seals. And further detailed the technical support between Liang meinang, and the skills of analyzing and solving problems. Cutting machine price concessions, reliable installation, perfect after-sales service, for the future equipment maintenance in some problems lay a good foundation.

It is widely used in shearer. Short time switch for small current control circuit in one day. It is suitable for the start and stop control of shearer motor. The connection or disconnection of main circuit is controlled by contactor and relay. Cutting price concessions, carefully selected, perfect after-sales service.

It is widely used in shearer. Usually used as a circuit breaker, the time to open or close the small current control circuit is very short. It is suitable for the start and stop control of shearer motor. Connect or disconnect the main circuit through the contactor and relay control circuit.

Shape is divided into: round blade, long blade, mechanical blade, arc blade, tooth blade, trapezoidal blade, waveform blade, boot blade, serrated blade, disc blade, small blade, special-shaped blade, die produced by bending machine, mechanical accessories, scissors and other products.

When it is difficult to determine what type of hydraulic shear obstacles will be produced by the machine tool, the transposition comparison method can be used to confirm clearly, and the defective machine tool can be compared with the ordinary machine tool. Similarly, the difference is the fault location of the machine tool. When it is difficult to determine whether the technical condition of the parts is normal, the test can be carried out by replacing the parts at a higher level. Assuming that there is no obvious change in the working condition of the machine tool, which indicates that the original parts meet the standard, the fault of the machine tool has nothing to do with the parts, otherwise the parts will have problems.