Grinding
Grinding technology depending on rational clamping technology
In the field of metal-cutting machining, a significant proportion is accounted for by the finishing and fine machining operations known as “grinding”. A rough distinction can be made between “freehand grinding” and “forced-guided grinding processes”. The latter depend on a safe positioning of the workpiece to be machined. The focus is on problems to be solved in workpiece machining by horizontally acting grinding machines.
Various clamping techniques are used for this purpose, ranging from the familiar magnetic clamping plate to precision clamping devices. The following list from SPREITZER presents a summary of the most important clamping techniques used today in the field of grinding technology.
Application areas GRINDING
Precision clamping device
This category includes a wide range of mechanical clamping elements. The components manufactured by Spreitzer can be mounted directly on a magnetic plate or on a machine table or measuring table with T-slots. Precision vices, with different functions and designs, occupy the largest area of these precision devices. These include models made of magnetizable yet corrosion-resistant chrome steel.
In addition to centering and multi-jaw vises, Spreitzer also offers vises with angle adjustment in two axes.
For grinding surfaces or recesses on round bodies, also under different degrees, the precision direct dividing head has proven itself. Round parts can also be held in collets or three-jaw chucks, which are also held securely on a magnetic plate.
Mini vices, spring clamps or the punch cylindrical grinder are other options for producing high-precision workpieces using surface grinding machines.
To our precision clamping devices for sanding work in our store
Magnetic clamping technology
This clamping technology, which has been proven for decades, is carried out by means of permanent or electromagnets. In all cases, the magnetic force acts on workpieces with a maximum iron content. High-alloy steel, such as V2A, is not attracted to magnets.
The great advantage for the “grinding” area with this clamping technology is first of all the extremely short setup time. It simply consists of placing the cleaned support surface of the workpiece on the cleaned magnetic chuck and switching on the magnet. Flat magnets have a long service life and maximum flexibility in terms of areas of application. Added to this are the advantages of high clamping forces. In addition to flat magnets in many sizes, Spreitzer also carries round magnets and magnetic sinusoidal tables in its program.
To the clamping solutions using magnetic clamping technology for sanding work in our store
Vacuum clamping technology
Vacuum plates are not dissimilar in their mode of operation to the magnetic chucks described previously. Here, too, an extremely short setup time is achieved by means of adhesion. However, the clamping force or holding force is generated here by a vacuum. Therefore, this technology is also suitable for V2A steels and all non-ferrous metals and plastics. The modular design developed by Spreitzer further extends the flexibility, which includes any combination of different product versions.
In order to be able to securely clamp even complex workpieces with openings and large bores, the corresponding points are sealed with a sealing cord. This also includes workpieces with large distances between the individual contact surfaces. The seal can be positioned close to the edges of the bearing surface, which minimizes or even prevents clamping force losses.
To our vacuum clamping technology solutions for precise grinding in our store
Freeze clamping technology
This is a technology whose mode of action is obvious from its very name. The freeze clamping technology favors absolutely distortion-free clamping. A condition reserved primarily for workpieces with high sensitivity to pressure and deformation. Dependencies on material types are also not present here. Another advantage is the possibility of machining relatively small workpieces that cannot be gripped by other clamping methods.
To our clamping solutions with freeze clamping technology for safe grinding in our store
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By using our products and services, our customers increase the productivity of their production by up to 100 % and at the same time significantly reduce their production costs.
