During the mechanical processing process, hole processing has always been the focus and difficulty of the entire processing project. Drills, drill chucks, reamers, honing rods and other processing tools are usually used. Floating fixtures are rarely mentioned in the industry, but they are often used. I heard the master worker talk about floating chuck, so what is floating chuck?
What is a floating fixture:
Floating holder means that the tool can float along the axis parallel to the tool axis or swing along the angle in the vertical space, or have both kinds of floating at the same time.
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Why use floating clamps
In the manufacturing process of mechanical parts, there are often a large number of high-precision and high-surface-quality hole processing requirements. Hole processing has always been the difficulty and focus in mechanical processing. The use of high-precision honing after drilling and reaming is undoubtedly a The most important and common processing method.
Takezawa Seiki's single-stroke honing process, while maintaining a high level of precision, must complete a series of precision machining including surface roughness, cylindricity, etc. in a single reciprocation. It itself affects the straightness of the spindle and workpiece. The requirements are also quite high.
If a special honing machine is used, because the special machine has a special floating spindle and a following motor assembly, high-efficiency single-stroke honing can generally be achieved by using a high-quality universal joint.
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Machining Center
Although domestic machine tool manufacturers are constantly working hard to improve the quality and accuracy of their products to meet various precision needs, the linearity between the machine tool's spindle and the hole to be honed is still difficult to achieve because it involves several manufacturers. Ten years of research and development, as well as the upstream and downstream supply chain standards of any part in the machine tool.
You cannot ask a domestic machine tool or machining center, which costs more than 100,000 yuan, to reach the same level as an imported machine tool that sells for three times the price. Therefore, it is still a very difficult problem to achieve high centrality and cylindricity of the inner hole.
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In addition, another important and most difficult reason to solve the poor linearity between the spindle and the workpiece is the concentricity deviation of the spindle caused by the heat of the machine tool bearings, which is almost an inevitable factor.
As you know, to achieve high-precision concentricity between the hole and the machine tool spindle, it is necessary to make the honing rod extend into the hole perfectly without any radial force. The floating fixture is designed for this purpose.
At the same time, the floating fixture also compensates for errors in workpiece installation, honing rods, etc. in the horizontal axis or in the vertical space.
Whether it is a domestic machine tool or an imported high-precision CNC machine tool, the floating fixture is decisive for improving the straightness and cylindricity of the hole!
Features of Zhuzawa floating clamp:
1. Radial amplitude is suppressed below 5μm
2. Low investment but higher precision processing than before
3. Reduce tool replacement time and improve production efficiency
4. Eliminate deviations caused by cutting resistance
5. Suppress quality instability, reduce defective products and repair workpieces
6. Correct the hole processing deviation in the previous process
Floating fixtures are used in processing machinery: drilling machines, vertical machining centers, honing machines, etc.
Application tools: diamond honing rod, reamer, tap, rolling knife, etc.
Application areas include: automobile engines, ship engines, and mechanical parts manufacturing in various fields such as hydraulics, medical, energy, and aviation.
