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No.000063 Long Length Precision Table
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Long table constructed from configurable components.
Relevant category
Aluminum frame
| Product name | Aluminum Frames - 8 Series, Base 40, Four-Side Slots, Two Slots per Side |
|---|---|
| Part number | HFS8-8080-380 |
| Features | HFS8 Series 80mm SQ. extrusions with 2 or more slots. |
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria
Durable and easy to assemble
Available sizes
■Aluminum extrusions (Overview)
| External size | Extrusion slots applicable screw DIA. | Length configure in 0.5mm increments | Standard | High rigidity type | Light type (Lightweight・economical) |
|---|---|---|---|---|---|
| □20 | M5 | 50-4000 | ○ | ○ | |
| □25 | ○ | ||||
| □40 | ○ | ○ | |||
| □30 | M6 | ○ | ○ | ○ | |
| □50 | ○ | ||||
| □60 | ○ | ○ | |||
| □100 | ○ | ||||
| □40 | M8 | ○ | ○ | ○ | |
| □80 | ○ | ||||
| □45 | ○ | ○ | ○ | ||
| □50 | ○ | ○ | |||
| □60 | ○ | ○ | |||
| □90 | ○ | ○ | |||
| □100 | ○ | ○ |
Leveling bolt
| Product name | Leveling Bolts-Standard Type |
|---|---|
| Part number | LVBS20-40 |
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria
Easy to adjust in fine increments
Available sizes
■Leveling bolt Standard type
| Material | Surface treatment |
|---|---|
| 1045 Carbon Steel | Black oxide |
| Electroless nickel plating | |
| 304 Stainless Steel | − |
■Sizes and Dimensions
| Screw x Pitch (Fine thread) | Length under head | Hole DIA. | Head thickness | Applicable screw | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 5 | 10 | 15 | 20 | 25 | 30 | 40 | 50 | 60 | 80 | 100 | ||||
| M8×0.75 | ○ | ○ | ○ | ○ | ○ | ○ | φ3.5 | 4 | M3 | |||||
| M10×1.0 | ○ | ○ | ○ | ○ | ○ | ○ | ○ | φ5.5 | M4・5 | |||||
| M12×1.0 | ○ | ○ | ○ | ○ | ○ | ○ | ○ | φ7 | 5 | M6 | ||||
| M16×1.5 | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | φ9 | M8 | ||||
| M20×1.5 | ○ | ○ | ○ | ○ | ○ | ○ | ○ | φ13 | M10・12 | |||||
| M24×1.5 | ○ | ○ | ○ | ○ | ○ | ○ | φ17 | 8 | M16 | |||||
| M30×1.5 | ○ | ○ | ○ | ○ | ○ | φ23 | M20 | |||||||
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CAD Download: File Format
CAD Data Limitations
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Assembly data shows the assembly drawings in the concept design phase. The sole purpose of the data is to explain the structure and functionality of the assembly and is not considered nor to be used as a final design.
You will need to edit the Data so that it meets your specific design conditions. -
Unit assembly Data consists of some sub-assemblies.
It is configured so that each sub-assembly unit can be used as it is or edited. - The Data for fabricated parts is based on easy-to-edit dimensions and shapes in sketches and histories.
- The Data including the third-part components are made by the Company.
* The part in the frame is a sub-assembly unit.
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- * Unit assembly Data consists of some sub-assemblies.
It is configured so that each sub-assembly unit can be used as it is or edited.
Application Overview
Purpose
- A table used to check for warpage and deflection of long workpieces.
Points for use
- Leveling bolts need to be adjusted manually.
- Table flatness is checked with a bubble level.
- Adjustment is made after the base plate is reinforced with blocks.
Target workpiece
- Long objects
External dims.: W2500 x D100 x H100
Design Specifications
Operating Conditions or Design Requirements
- External dimensions: W2215 x D540 x H770
Required Performance
- Flatness: ±0.2mm/m
Selection Criteria for Main Components
- Leveling bolts
- Leveling bolts are a lower cost alternative to achieve the desired flatness than machining is. Leveling bolts will divide the unit into segments so fine adjustments can be made.
Design Evaluation
Verification of main components
- Calculate the table deflection caused by the work piece.
- Base plate
- Weight: As the adjust plate width supporting the base plate
- Width(b) x Length(L) x Specific gravity = 100 × 410 × 25 × 0.0027 = 2767.5g ＝ 27N
- Beam deflection by own weight: δ1 ＝ 5wL⁴ / 384E
- Beam length: L = 410mm
- Uniformly distributed load: w = Own weight / Beam length = 27 / 410 = 0.06615
- Young's modulus: E = 69300MPa
- Cross sectional moment of inertia: I = bh³ / 12 ＝ 100 × 254 ＝ 130208mm⁴δ1 ＝ 5 × 0.06615 × 410⁴ / (384×69300 x 130208) ＝ 0.0027mm
- Deflection due to workpiece own load: δ2 ＝ WL³ / 48EIδ2 = 10 × 410³ / (48 × 69300 × 130208) ＝ 0.0016mm
- Total deflection = 0.0027 + 0.0016 ＝ 0.0043mm ＜ 0.005mm
Other Design Consideration
- A leveling bolt is placed at each of the four corners of a base plate, making flatness adjustments on each plate possible.
- Aluminum extrusion structure can be segmented for easy transportation.
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