What is the transmission in the precision transmission?

To understandPrecision transmissionFirst of all, we need to understand the concept of precision transmission. First of all, what is precision transmission? Precision transmission is a device that transfers energy and other functions between distances. Yes, transmission is a device and will be applied to the machine. Why do we add transmission to the machine? In fact, there are many reasons. I will only talk about a few points here. First of all, because of the relationship between our work requirements, the general requirements of the speed, force, etc. are not the same as ordinary power machine. 2. Work often requires us to have more complex and diverse movements, which is not quite the same as the single speed rotation movement of the power machine. 3. The speed of the power machine is difficult to meet the requirements of variable speed, which requires very high technology and consumption, and the power opportunity is relatively difficult, even if it is achieved, it is very uneconomical. 4. For all kinds of working institutions that require different modes and speeds of movement, they actually need the same power machine to drive them. For the traditional transmission form, the first is single-flow transmission, power machine to work machine, followed by shunt transmission, power machine is divided into several batches to start respectively, confluence transmission, and several batches are summarized into the work machine. Types are also very diverse, mechanical, fluid, electric, magnetic transmission, etc., including mechanical transmission is divided into friction transmission, meshing transmission, push transmission.

So what kind of precision transmission system can be called precision transmission system? Precision transmission is mainly composed of a more important branch of the machine tool, by the ball screw transmission and work, it is necessary to pay attention to the movement in the process of its four cylinder and its movement axis is combined, in foreign countries we can also see the same example. The function of precision transmission is mainly used to transmit motion. Our common precision transmission systems include belt transmission chains, transmission, gear trains and so on.

　　Finedense transmissionJapanese imported bearings are divided into several small categories, which are generally divided according to the direction of the load that the bearing can bear and the type of rolling element. According to this regulation, bearings can be divided: radial bearing (nominal contact angle is 0 ° ≤α≤ 45 °) deep groove ball bearing, cylindrical roller bearing, needle roller bearing (nominal contact angle is 0 °) angular contact ball bearing, self-aligning ball bearing, tapered roller bearing, spherical roller bearing (nominal contact angle is 0 ° ≤α≤ 45 °) thrust bearing (nominal contact angle is 45 ° ≤α≤ 90 °) thrust ball bearing, thrust cylindrical roller bearing, thrust needle roller bearing (nominal contact angle of 90 °) thrust angular contact bearings, thrust tapered roller bearings, thrust spherical roller bearings (nominal contact angle of 45 ° ≤α≤ 90 °)3) combination bearings. Bearing unit.

Cut three samples with a length of 250 mm from one PJ V-ribbed belt, and mark a marking line with a spacing of 100mm at the middle position of the PJ V-ribbed belt. When more than three samples cannot be taken from one PJ V-ribbed belt, samples can be cut from the same batch of PJ V-ribbed belt, but must be indicated in the report. 7.4.2 High temperature resistance test method
Place the sample at 100 ℃ ± 2 ℃ for 96 h ± 1 h and then take it out. After standing at laboratory temperature for more than 2h, bend it along a cylinder with a diameter of 20 mm at a contact angle of at least 90 °.