What is the processing technology of the gearbox?


Release time:

2023-01-05

All parts in the transmission are directly or indirectly installed and fixed on the transmission case. The quality of the transmission case determines the working performance and service life of the transmission assembly. The gearbox part is the key component of the gearbox. It assembles the functional components of the reducer (such as shaft teeth, parking, gear shifting and other related components into a whole, maintains the correct position between them, and according to a certain transmission relationship Transfer power in a coordinated manner. The appearance of the shell needs to have an artistic beauty and use more curved ribs.

All parts in the transmission are directly or indirectly installed and fixed on the transmission case. The quality of the transmission case determines the working performance and service life of the transmission assembly. The gearbox part is the key component of the gearbox. It assembles the functional components of the reducer (such as shaft teeth, parking, gear shifting and other related components into a whole, maintains the correct position between them, and according to a certain transmission relationship Transfer power in a coordinated manner. The appearance of the shell needs to have an artistic beauty and use more curved ribs. Under the premise of ensuring the overall stiffness and strength, the design aesthetics is optimized. The following describes the processing technology of the gearbox:

变速箱体

Selection of Main Surface Processing Methods for 1.

The main surface of the transmission case has a flat surface and a hole. For small and medium-sized workpieces, the processing of the main plane is usually carried out on a forming machine or an ordinary milling machine. For large workpieces, it is usually done on a gantry planer or gantry milling machine. The planing tool has a simple structure, low machine tool cost, convenient adjustment, but low productivity; milling is usually used for mass production; when the production batch is large and the precision is high, grinding can be used. When using small batches of single pieces to produce high-precision planes, except for some high-precision boxes that still require manual scraping, wide-edged finishing planes are usually used. When the production batch is large or to ensure the mutual position accuracy between the planes, combined milling and combined grinding can be used.

For the processing of box hole system, holes with a diameter of less than 30mm are generally not cast, and drilling expansion (or semi-fine boring) reaming (or fine boring) scheme can be used. For the cast hole, the scheme of rough boring, semi-fine boring and fine boring (with floating boring tool) can be adopted. Since the accuracy and surface quality requirements of the spindle bearing hole are higher than those of other shaft holes, a floating boring tool should be used for fine boring after fine boring. For high-precision holes on the box body, technical methods such as honing and rolling can also be used in the post-finishing process.

Processing flow of 2. gearbox

The gearbox case is mainly composed of a flat surface and a hole, which is also its main surface. Machining the plane first, then machining the hole is the general rule of box processing. Since the main plane is the assembly reference of the box body and the machine, the main plane is processed first, and then the hole is processed to make the positioning reference coincide with the design reference and the assembly reference, thus avoiding the error caused by the non-coincidence of the reference. In addition, first use the hole as the rough reference to process the plane, and then use the surface as the precision reference to process the hole, which can provide a stable and reliable positioning reference for hole processing. In addition, when processing the plane, the hard skin and unevenness of the casting are cut off, which is conducive to the processing of subsequent holes, can reduce the deviation and damage of the drill bit, and is more convenient for tool adjustment.

In recent years, due to the increase in infrastructure investment, the demand for construction machinery such as gearbox has shown a strong growth momentum, and some manufacturers have shown a trend of doubling year by year. although our country has taken measures to regulate the steel, building materials, electrolytic aluminum, and other industries due to the overheating of the local economy, many key projects have been launched. Although construction machinery will not overheat last year, it will still maintain a relatively large growth in the next few years.