Marble platform guide base
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Installation Requirements for Linear Guides on Marble Platforms
In the process of industrial production, marble platforms are type of high-precision measuring reference surface, and their unique physical characteristics give them significant advantages in the field of precision measurement.
In some industries, it is necessary to install guides marble, mainly divided into two categories: one is to drill holes on the marble platform and install guides to test the straightness and flatness of products. The second category is to guides on non-standard marble components to achieve the purpose of component design. So, what are the precautions when they install guides?
Precautions for Installing Guides
1 Keep the marble platform (the area where the guide is installed) clean and tidy. When cleaning, pour alcohol on a dust-free cloth and wipe the flat surface. After wip clean, use a dry and clean hand to lightly drag it on the surface of the platform. If there is a feeling of blockage, it needs to be scraped with a; if it is smooth and unobstructed, then the first step is completed.
- Take out the guide (wear rubber gloves to prevent the guide from rusting, use a dust-free cloth alcohol to wipe the guide installation surface, and remove the guide oil. After cleaning, place the guide in the installation area of the marble platform align the hole positions.
- Align the hole positions of the guide and the marble installation holes, place the marble level next to the guide (the distance should be close not far), and make it roughly parallel to the guide. If the marble has an installation reference surface, the marble level can be omitted, and the reference surface of the marble or component itself can be used to adjust the guide.
- Fix the first hole position of the guide, leaving room for adjustment up, down, left, and right. a magnetic dial indicator lever indicator (it is not recommended to use other types of indicators) on the guide slide block, and then adjust the marble level to ensure the installation of the guide (if there are any questions, please consult our professional personnel).
- Straighten the guide.
By this point, the guide installation is fully completed It should be noted that in this state, there is no problem using this guide to measure the relative straightness of the workpiece, but it is not accurate to measure the flat of the workpiece in the up-down direction. This is because there is an error in the Y-shaped undulation of the guide itself, and the walking parallelism after should be confirmed with the guide manufacturer. If the guide is selected as an ultra-precision imported guide, its walking parallelism is sufficiently small, and this method can also be used measure the flatness of the workpiece.

FAQ
1. What is the maximum size of granite workbench that can be processed??
1. Our factory can achieve 4000mm × 2000mm × 700mm in a single piece (without splicing, with high-precision platforms of grade 00 and 000), with a conventional platform thickness of 150-400mm; heavy-duty bases can achieve 600-800mm;.
2. Multi piece splicing platform (can be made larger, mainly level 0, suitable for large equipment bases) Our factory can achieve 8000mm × 4000mm × 600mm (splicing short board: the accuracy at the splicing joint is slightly poor, and there is a slight risk of misalignment between the boards under long-term temperature and humidity cycles. High precision measurement should avoid splicing as much as possible).
3. Selection reference suggestions.
✅ Level 000/Level 00 Metrology Inspection Platform: Priority given to integrated whole piece, recommended ≤ 3000 × 2000mm.
✅ Level 0 large-scale assembly and equipment base: splicing solutions can be selected to achieve a size of 6 meters or even larger.
✅ Thickness selection: The larger the length and width, the thicker the height (thickness) must be to prevent deflection and deformation of the tabletop, for example, 3000 × 2000, starting from a conventional thickness of 500mm
2. How many micrometers can the flatness reach? Can the accuracy be achieved at level 00, level 0, or level 000? What are the levels of 000/00/0?
3. Should we use Jinan green or other granite?
1. Physical parameters of Jinan Qingxin: density of 3.07~3.3 g/cm ³; Water absorption rate<0.13%; Linear expansion coefficient 4.16 × 10 ⁻⁶/℃; Mohs hardness level 6-7;
Advantages: ultrafine grain size, uniform and dense structure, low internal stress, good shock absorption and damping, minimal temperature and humidity deformation, stable up to levels 000, 00, and 0; Not dyed, permanently colorfast; Resistant to cutting fluid, non-magnetic, suitable for three coordinate, optical, and semiconductor reference platforms.
Applicable scenarios: metrology room benchmark, 000 level, 00 level high-precision detection platform, high-end equipment base, etc.
2. Indian Black Granite [high-end alternative, can be used at level 000/00]
The performance is close to Jinan Qing, with high density and low coefficient of thermal expansion; Imported raw materials, large-sized raw materials are easier to obtain than Jinan Qing.
Applicable: Class 000, 00 precision base, linear motor platform; The price is slightly lower than the genuine Jinan green.
3. Zhangqiu Black [Cost effective main force, up to level 00, regular level 0]
The density is about 2.8 g/cm ³, and the performance is slightly lower than that of Jinan Qing. It is generally stable at level 0 or level 00, and level 000 is not recommended.
Attention: Some materials need to be dyed, and their water absorption rate is slightly higher than that of Jinan green.
Recommended scenarios: Ordinary workshop 0-level inspection platform, medium precision equipment base.
4. Northeast material [only level 0, ordinary tooling platform]
The grain size is coarse, the density is low, and the stability is poor. It can only achieve level 0 or 1 and cannot achieve level 00/000.
Applicable: Workshop marking, fixture positioning, not suitable for precision measurement.
4. Is there a constant temperature and humidity workshop?
Workshop environmental parameters:
reference temperature: 20 ℃ (international reference temperature for length measurement)
Class 00 control: 20 ℃± 1 ℃,
Class 000 ultra-high precision control: 20 ℃± 0.5 ℃, hourly temperature fluctuation<0.3 ℃;
Relative humidity: 40%~60% RH (conventional stable 45~55% RH), humidity fluctuation within ± 5% RH;
Supporting facilities: shock-absorbing independent foundation, dust-proof purification, no direct blowing, reducing precision interference caused by vibration and airflow.











