- 本站编辑:xghl发布日期：2019-12-22 16:40 浏览次数：
There are many kinds of grinding machines, including surface grinding machine, external grinding machine, internal grinding machine, universal external grinding machine (or internal hole grinding), gear grinding machine, thread grinding machine, guide grinding machine, centerless grinding machine (external circle grinding) and tool grinding machine (tool grinding), etc. The following editor mainly introduces the structure of the lower grinder:
(1) grinding wheel rack - install the grinding wheel and drive the grinding wheel to rotate at high speed. The grinding wheel rack can move along the dovetail guide rail of the sliding seat in a manual or hydraulic transverse clearance.
(2) sliding seat - install the grinding wheel rack and drive the grinding wheel rack to move up and down along the column guide rail.
(3) column - supporting sliding seat and grinding wheel rack.
(4) worktable - the workpieces are installed and driven by the hydraulic system for reciprocating linear motion.
(5) bed - support the workbench and install other parts.
(6) coolant system - provides coolant (saponified oil) to the grinding area.
(7) hydraulic transmission system: it consists of:
1) power component: oil pump, which supplies pressure oil for hydraulic transmission system
2) actuator - oil cylinder, driving the movement of worktable and other components
3) control elements: various valves, control pressure, speed, direction, etc
4) auxiliary components - such as oil tank, pressure gauge, etc.
Compared with mechanical transmission, hydraulic transmission has the advantages of stable transmission, overload protection and stepless speed regulation in a large range.
Seven advantages of grinder:
1、 High precision and stable quality of processed parts
The positioning accuracy and repeated positioning accuracy of the surface grinder are very high, so it is easy to ensure the consistency of the dimensions of a batch of parts. As long as the process planning and procedures are correct and reasonable, coupled with careful operation, it can ensure that the parts can achieve high processing accuracy, and also facilitate the quality control of the processing process.
2、 High degree of automation can reduce the manual labor intensity of operators
The machining process of the surface grinder is completed automatically according to the input program. The operator only needs to start the tool setting, load and unload the workpiece and replace the tool. In the machining process, the main task is to observe and supervise the operation of the machine tool.
3、 Dimension marking should be in line with the characteristics of surface grinder processing
In NC programming, all the dimensions and directions of points, lines and surfaces are based on the programming origin. Therefore, the coordinate scale is directly given on the part drawing, or the scale is introduced with the same datum as far as possible.
4、 A few types or scales
The shape and inner cavity of the part adopt the same several types or dimensions, which can reduce the number of tool changes, and may also apply the control program or special program to shorten the program length. The shape of the parts is symmetrical as much as possible, which is convenient to use the mirror processing function of the plane grinding to program, so as to save the programming time.
5、 Reliable positioning datum
In the process of surface grinding machine, the working procedure is often concentrated, so it is very important to locate with the same datum. It is convenient for R & D and modification of new products. The surface grinder generally does not need a lot of complex process equipment, and the parts with complex shape and high precision requirements can be processed after the preparation of processing program. When the product is modified and the planning is changed, only the program needs to be changed, and the tooling does not need to be re planned. Therefore, the surface grinder processing can greatly shorten the product R & D cycle, and provide a shortcut for the R & D and development of new products, product improvement and modification.
6、 It can be developed to a more advanced manufacturing system
Plane grinding and its processing technology are the foundation of computer-aided manufacturing.
7、 High production efficiency
The surface grinder processing is able to process multiple machining surfaces in clamping again, generally only testing the first piece, so it can save many central processes in the processing of ordinary machine tools, and because the quality of the parts processed by the grinder is safe and stable, it brings convenience to the subsequent processes, and its comprehensive efficiency is significantly improved.