Nowadays more and more people choose stone engraving machine to do stone carving processing, but the problem of breaking the stone engraving knife caused by a little carelessness has become the most troublesome thing for users who make stone engraving machine.
The price of stone carving tools varies from tens of yuan to hundreds of yuan. Each broken knife symbolizes that the cost of use has increased. So, how can we better guarantee the longer service life of stone engraving machine tools? Based on our understanding of the industry, we have the following experience:
1. Turn off the quality of the engraving machine tool itself.
You must choose a high-quality stone carving knife. If the quality of the tool itself is not enough, it is useless to be careful during the operation.
2. Choose the engraving machine tool that suits you.
Buying does not necessarily mean that all the expensive is good, the key is to suit yourself, to be targeted, especially the selection of some important parameters of the carving knife, such as:
1). Mohs hardness <5 such as: white marble carving bluestone carving (distributed widely Shandong, Henan, Hunan, etc.) This stone is relatively soft, widely distributed, and cheap. It is the choice of many tombstone carving and embossing engraving users. Bluestone, lettering: We generally use tungsten steel sharp knife. This kind of tool is cheap and easy to use, especially for lettering and relief.
2). The Mohs hardness is between 5 and 6. As we often use, China's Heifeng Town Black, Ma Shi, etc. These stones are relatively hard to use when selecting tools, using diamond or diamond tools, depending on the use of the corundum tool manufacturing process. It is also different. There are two common processes in China at present:
Brazing: This tool simply applies a layer of sand to the toolholder using a brazing process. Relatively sharp, the engraving precision is high, but the amount of cooling water is sufficient when the process is used differently, and the instantaneous temperature is too high and will be scrapped due to high temperature.
All-in-one knives: This kind of knives generally place all diamonds in front of the entire arbor. This kind of craft tool has a long service life when it comes to the opposite direction, but it will wear out due to the use time, resulting in some differences in the depth of the front and rear engraving. , hard material stone. Such as the general red Chinese red.
3). Sandstone engraving: Sandstone is selected as much as possible due to the material.
3. Improper use of the tool causes abnormal damage to the engraving tool.
1). Improper use;
2). The speed of the lower knife is too fast (the speed of the stone cutting knife should be kept between 200-350 according to the material);
3). The speed is too fast;
4). Insufficient control of cooling water;
5). The first knife to do the relief must be slow;
4. The engraving skills of different engraving patterns are not in place.
General stone engraving machines are divided into: lettering, line carving, and relief.
1). Lettering: The general tombstone carving tool damage mode is abrupt, pay attention to adjust the engraving depth to observe the flatness of the material, 3D word control the speed and depth.
2). Line carving: Line carving is the factor that affects the service life of the tool. Generally, the layout is uneven, the speed is too fast, the line carving speed is different and the relief speed. For example, the same speed line carving engraving acceleration and inertia are relatively large, so Try to slow down as much as possible, and the material is softer and can be accelerated.
3). Embossing: During the embossing process, many friends feel that the tool compensation can save a lot of time, but it is often neglected by the tool. The engraving embossing is to adjust the engraving precision as much as possible within the acceptable time range. In the case of the case, the engraving speed can be adjusted appropriately, and the accuracy and speed can be adjusted quickly and well.
Embossing pattern selection: At present, most of the predecessors who do embossing in China are made of wood, mold, etc. They often require the pattern to be quite perfect, with distinct layers, but ignore one point: the depth of stone carving is equivalent to the darker material, if If the pattern level is too clear, it will often break the knife at the level.
Five. The quality of the machine itself.
The stability of the machine is not good, causing tremors during the engraving process, and the broken knife is normal.
In order to select the quality of the guide rails, some manufacturers choose compasses or smaller square rails in order to save the machine cost. The gap between the guide rails will also cause the tool to tremble.
Spindle motor dynamic balance adjustment is not good (this is rarely seen).
The quality of the tool holder, at present, some errors in the domestic tool holder will also cause the dynamic balance imbalance.
6. Broken knife fragments cause secondary damage.
When changing the knife after cutting the knife, first remove the broken knife, and even some of the broken pieces of the knife must be removed, otherwise it is easy to cause the second broken knife, and then replace it with a suitable knife.
7. The spindle speed is too low.
The spindle speed should be no less than 18,000 rpm.
Eight. The voltage is unstable.
Ensure that the stable operating voltage of 380V does not exceed ±10%.
