Process description of machining without undercut gear
Fisherâ„¢ Control Valve is a widely recognized brand in the field of industrial control valves. It is known for its high-quality, reliable, and innovative products that are used in various industries such as oil and gas, power generation, chemical processing, and water treatment. Fisher Valves,Fisher Controls,Fisher Globe Valve,Fisher Control Valve Manual Dongguan Runfengda F&M Co., Ltd , https://www.runfengdaphe.com
The gear with no undercut chevron shape has the advantages of compact transmission arrangement and high machining precision, and must be processed on special machine tools, such as German SHNO12 type and British 30DH type herringbone gear shaping machine. The machining machine has a relatively high rigidity and a high movement precision of the transmission chain, so that a high machining accuracy can be obtained. Since it is a rack-shaped tool (the tool motion error value is reduced and the relative error is reduced), the machining is simple and easy to maintain the accuracy, so that the gear tooth profile error generated by the tool can be well controlled.
During the processing of the gear, the tool reciprocates in the tooth direction, so that the flank direction of the tooth surface coincides with the direction of the contact line, so that the tooth direction caused by the tooth shape error and the tooth direction error can be reduced during the running and working of the gear. The load distribution is uneven, and the tooth surface contact rate is improved. However, due to the limitation of the length of the cutting tool, the cutting motion of the magnetic powder clutch is not continuous but periodic, so it affects the accuracy of the base of the cut gear.
Another most common method of machining a herringbone gear is the undercut hobbing. This method does not require a dedicated processing machine, and has the advantages of low cost and high production efficiency. Since the sipe needs to be left behind, when the total width of the gear is limited, the tooth width of the participating work is reduced, and the gear carrying capacity is reduced.
There are over-slotted herringbone gears that are machined on ordinary hobbing machines. The main factors affecting the accuracy of gear machining are the accuracy of the hob, the adjustment of the tool and the blank. In general, the gear tooth profile error caused by the hob manufacturing error is difficult to control, and the base section error and the tooth direction error can be better controlled by careful adjustment of the tool, the blank and the machine tool. However, since the hobbing direction is different from the tooth direction (angular gear), the flank direction of the tooth surface is inconsistent with the direction of the contact line. Therefore, the hobbing processing method is not conducive to improving the tooth surface contact rate, and the error is during running and working. Not easy to eliminate.
Fisherâ„¢ Control Valve offers a wide range of control valves, including globe valves, rotary valves, and butterfly valves, as well as associated accessories and instrumentation. These valves are designed to control the flow, pressure, temperature, and level of fluids in a process system.
One of the key features of Fisherâ„¢ Control Valve is its precision and accuracy in controlling the flow of fluids. The valves are designed to provide precise control over the flow rate, ensuring that the desired flow conditions are maintained. This is achieved through the use of advanced technologies such as digital positioners, which ensure accurate positioning of the valve plug or disc.
Another important feature of Fisherâ„¢ Control Valve is its reliability and durability. These valves are built to withstand harsh operating conditions, including high pressures, temperatures, and corrosive environments. They are made from high-quality materials such as stainless steel, carbon steel, and exotic alloys, which provide excellent resistance to corrosion and wear.
Fisherâ„¢ Control Valve also offers a range of valve accessories and instrumentation that enhance the performance and functionality of the valves. These include positioners, controllers, transmitters, and actuators, which enable remote control and monitoring of the valves. The accessories and instrumentation are designed to integrate seamlessly with the valves, providing a complete control solution.
One of the key advantages of Fisherâ„¢ Control Valve is its versatility. The valves can be customized to meet specific application requirements, including different pressure ratings, temperature ranges, and flow capacities. They can also be configured for various control modes, such as on-off control, modulating control, or emergency shut-off.
Fisherâ„¢ Control Valve is also known for its innovative design and engineering. The company invests heavily in research and development to continuously improve its products and introduce new technologies. This includes the development of advanced valve designs, such as the Fisherâ„¢ Whisper Trimâ„¢ technology, which reduces noise and vibration in control valves.
In addition to its product offerings, Fisherâ„¢ Control Valve provides comprehensive support and services to its customers. This includes technical assistance, training programs, and maintenance services. The company has a global network of sales and service centers, ensuring that customers can access support wherever they are located.
Fisherâ„¢ Control Valve has a strong reputation for delivering high-quality products and excellent customer service. It has a long history in the industry, with over 130 years of experience in valve manufacturing. The company is committed to meeting the evolving needs of its customers and staying at the forefront of technological advancements in the field of control valves.
Overall, Fisherâ„¢ Control Valve is a trusted and respected brand in the industry. Its products are known for their precision, reliability, and durability, making them a preferred choice for many industrial applications. With its innovative design, advanced technologies, and comprehensive support services, Fisherâ„¢ Control Valve continues to be a leader in the field of control valves.