Basic characteristics of large iron plate processing with computer gongs

1. Feasibility analysis of high-speed CNC machining technology: it mainly aims at the transformation target and processing object, and makes a comprehensive analysis on the structure, performance and accuracy of the transformed machine tool, including whether the original structural design of the machine tool is reasonable, whether the basic components and structural parts of the machine tool are still in good condition, and whether the ordinary machine tool is changed into a numerical control machine tool, It is necessary to investigate whether the mechanical transmission structure of each coordinate axis and the form of guide rail pair are applicable; whether there is a gap between the current accuracy of the measuring machine tool and that of the factory.
2. Economic feasibility analysis of high-speed CNC machining: Based on the actual operability, the paper lists several situations that should be considered: considering the value of the machine tool, analyzing whether the input required to achieve the transformation goal is too high; analyzing the transformation value from the position and importance of the machine tool in the unit’s product manufacturing; estimating whether the investment can be recovered quickly from the input-output rate of the machine tool, And then it can produce better benefits quickly.
3. It is a key problem for high-speed CNC machining to choose the machine tool reformer. If it is well chosen, the transformation task can be successfully completed and the transformation goal can be achieved; if the selection is not good, it is not only the failure of machine tool transformation, but also a waste of money and time, affecting production. Installation and adjustment of high speed CNC ball screw nut

High speed CNC ball screw nut pair is only used to bear axial load. Radial force and bending moment will cause additional surface contact stress and other adverse loads on the ball screw pair, which may cause permanent damage to the ball screw. Therefore, when the ball screw nut pair is installed on the machine tool, attention should be paid to: 1. The high-speed CNC ball nut should move within the effective stroke, and the limit must be set at both ends of the stroke, so as to avoid the nut out of the lead screw shaft and cause the ball to fall off. 2. Due to the high transmission efficiency of the ball screw nut pair, it is not self-locking. When it is used for vertical transmission, if the weight of the components is not balanced, the reverse transmission caused by the dead weight of the components after the transmission stops or the motor loses power must be prevented. The methods to prevent reverse transmission can be worm gear drive, electric brake, etc.

1. The axis of the high-speed CNC screw must be parallel to the axis of the supporting guide. The center of the bearing seat at both ends of the machine tool and the center of the nut seat must form a line at three points.
2. When the ball screw nut pair is installed on the machine tool, do not remove the nut from the screw shaft. If it must be removed, use the auxiliary sleeve, otherwise the ball may fall off during loading and unloading.
3. When the nut is installed into the mounting hole of the nut seat, the impact and eccentricity should be avoided.
4. In order to prevent chip from entering and wearing the nut pair of ball screw, high-speed CNC can install protective devices such as wrinkle protection cover and spiral steel belt protection sleeve to protect the screw shaft completely. In addition, dust ring can be added at both ends of screw nut when there is much floating dust.

Basic characteristics of large iron plate processing

1. Large scale iron plate processing precision requirements, a pair of die is generally composed of a female die, a punch and a mold base, some may also be a multi piece assembly module. Therefore, the combination of upper and lower dies, the combination of inserts and cavities, and the assembly of modules all require high machining accuracy. The dimensional accuracy of precision die is often up to μ m level.
2. The shape and surface of some products, such as automobile panels, aircraft parts, toys and household appliances, are composed of a variety of curved surfaces, so the mold cavity surface is very complex. Some surfaces have to be treated mathematically.
3. The production of small batch mould is not mass production, in many cases, only one set is produced.
4. There are many working procedures for large-scale iron plate processing, such as milling, boring, drilling, reaming and tapping.
5. The use of repeated production mould has life. When the use of a pair of dies exceeds its service life, it is necessary to replace a new mold, so the production of mold is often repetitive.
6. Sometimes there are no drawings or data in the production of profiling mould, and the profiling processing should be carried out according to the actual object. This requires high precision and no deformation.
7. The die material for large-scale iron plate processing is excellent, and the hardness is high. The main material of the mold is made of high-quality alloy steel, especially the mold with high life. This kind of steel has strict requirements from blank forging, processing to heat treatment. Therefore, the preparation of processing technology can not be ignored, heat treatment deformation is also a serious problem in processing.