The special value of vertical grinding tools

Up to now, we are accustomed to machine tool structures that are different from conventional and traditional forms. Every new way of arranging axes or positioning cutting tools and workpieces has prompted us to rethink the basic principles of metal cutting and discover new options to produce parts more efficiently.

Vertical grinding is a proof. As its name implies, vertical grinding fixes the workpiece on a rotating chuck in the base of the machine tool, similar to the positioning of the workpiece on a vertical lathe. The grinding spindle starts to move up and down from the top of the workpiece, from one end to the other (and possibly rotating).

In recent years, one of the main advocates of vertical grinding is TaiyoKoki, which is a grinding machine manufacturer headquartered in Nagaoka, Japan. The company is now a member of MoriSeiki, so it has a more active position in the North American grinding machine market. TaiyoKoki produces many types of grinders, but it is worth noting that many of its models are based on the principle of vertical grinding. From a structural point of view, these grinders are distinguished from other grinders in that both the grinding spindle and the workpiece are installed vertically instead of horizontally, so as to grind the inner diameter, outer diameter and surface of cylindrical parts. The grinding head is simultaneously controlled on the horizontal axis (the direction of the workpiece diameter) and the vertical axis (the longitudinal direction of the workpiece). These machines are good at grinding round shapes.

The following introduces the reasons why vertical grinding has its special value: (Guide: Tool balance during high-speed machining)

Less deformation, better roundness

On a vertical grinder, the workpiece is installed upright in the chuck. On a horizontal grinder, the clamping force must ensure that the workpiece does not fall outside the chuck. A vertically clamped workpiece only requires sufficient clamping force to resist the grinding force. Gravity facilitates the grinding process, not hinders it.

Because it only needs a small clamping force to be fixed on a vertical grinder, the deformation of the workpiece may be less. This reduces the chance of roundness errors. According to the manufacturer, according to the results obtained from the standard test workpiece, the vertical grinder can achieve a roundness error of less than 1μ; m u200bu200b(less than ±0.000039 inches).

One-time installation of cards to complete processing

Vertical grinder can be engaged in outer diameter, inner diameter and surface grinding. According to the shape of the workpiece, all these three tasks can be implemented in one installation. When this situation is possible, errors caused by multiple card installations are avoided. The roundness between the inner diameter and the outer diameter and the perpendicularity between the inner diameter and the outer diameter and the surface can be maintained more accurately. Because the workpiece and the grinding spindle are vertical, there is actually no downbending problem to be solved. The machine tool structure is inherently rigid. Combining operations in a one-step installation brings significant economic benefits. Less installation times means fewer parts to handle, shorter preparation time, fewer machine tools, and lower labor costs.

Ergonomics

Vertical grinders are easier to load and unload. Manual loading and unloading do not need to support the workpiece while starting the chuck. The operator simply installs the workpiece down into the chuck. The centering of the workpiece also occurs more naturally, because there is no uneven gravity when the jaws are closed.

Loading and unloading with cranes or manipulators may also become easier, because the workpieces in the chuck have the same stable positioning on the rotary car or transfer plate. For example, dish-shaped parts such as gears can be transported down horizontally for picking up and installation. Similarly, place it horizontally down in the chuck of the grinder.

Vertical grinders are usually smaller than comparable horizontal grinders. Vertical grinders take up more height space and occupy less space. This leaves room for automatic loaders or manipulators next to the machine tool, making automation a more attractive option.

No dust

On a horizontal grinder, the sliding surface of X and Z axis is lower than the point of grinding action.

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