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Use of hydraulic oil in injection equipment
Because there are many types of hydraulic pumps in injection molding equipment, and the same type of pumps are affected by factors such as power, speed, pressure, flow, and metal materials, the selection of hydraulic oil is more complicated. In general, HL oil can be used for low pressure pumps, and HM oil should be used for medium and high pressure pumps. The order of antifriction effect of the lubricity (wear resistance) of hydraulic oil on the three major pumps is vane pump> plunger pump> gear pump. The hydraulic system of the vane pump as the main oil pump should choose HM oil regardless of its pressure ...
Domestic hydraulic and pneumatic standards: industry standards
As of May 2004, the current domestic catalog of hydraulic and pneumatic standards under the jurisdiction of the National Technical Committee for Hydraulic and Pneumatic Standardization is summarized below. Among them: 79 national standards and 66 industry standards. The date of the review and confirmation of the standard is in parentheses. Bid acquisition: idt or IDT means equivalent use; eqv or MOD means equivalent or modified use; neq means non-equivalent use. Standard number Standard name JB / T 7035.2－1993 Type and size of hydraulic bladder accumulator AB type JB ...
Domestic hydraulic and pneumatic standards
I. Standards Acquisition: idt or IDT means equivalent use; eqv or MOD means equivalent or modified use; neq means non-equivalent use. National Standard GB / T 786.1-1993 (2001 *) Hydraulic and pneumatic graphic symbol eqv ISO 1219-1: 1991 GB / T 2346-2003 Nominal pressure series of fluid transmission systems and components ISO 2944: 2000, MOD GB / T 2347- 1980 (1997) Nominal displacement of hydraulic pumps and motors ...
What are the characteristics of a vertical milling machine?
Compared with the horizontal milling machine, the main difference between the vertical milling machine and the vertical milling machine is the vertical arrangement of the spindle. In addition to the different spindle arrangement, the table can be raised and lowered. End mills, chucks, drills, etc. can be used. It can mill keyway, plane, boring, etc. Horizontal milling machines can also use the above various tools, but not as convenient as end milling, mainly because of the use of hangers to enhance the tools (mainly three-sided edge milling cutter, sheet milling cutter, etc.)
Due to historical reasons, the industrial layout of more than a thousand companies in China's machine tool industry is converging, resulting in a small total production volume and serious low-level repetitive construction. It can be said that problems frequently occur, but in general, the prospects of China's data industry are good. The following is an analysis of China's CNC machine tool industry. At present, the European countries have a high rate of mutual procurement, which forms a regional and complementary effect; Asia's machine tool trade is frequent due to the uneven development of machine tools in various countries, ...
An important electrical parameter in machine tools is the effective power of the motor. Using Contactron Motor Manager from Phoenix Contact, this parameter can be accurately monitored, and higher overload and low-load operating conditions can be immediately detected by this instrument. Because the motor manager can prompt alarm and maintenance prompts before the motor fails and stops, it can effectively protect the machine tool equipment and make the machine ...