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No.000147 Laser Height Adjustment Mechanism
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Simplified Height Adjustment
Relevant category
Flat Spring
| Product name | Flat Spring |
|---|---|
| Part number | IBNWA-T0.5-H6-F10-E10-G10-Q20-R15 |
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria
Compact spring that can provide the required retaining force
Risk info.
Requires trial and error to obtain the correct load value
Available sizes
■Flat Spring (Two-point Bending Type)
| Material |
|---|
| 304 Stainless Steel -CSP |
■Sizes and Dimensions
| Hole Machining | Width[H] (mm) | Plate Thickness(mm) 0.1 mm increments |
|---|---|---|
| A B C D | 6 | 0.2－0.5 |
| 8 | 0.2－0.5 | |
| 10 | 0.3－0.6 | |
| 12 | 0.3－0.6 | |
| 15 | 0.4－0.7 | |
| 18 | 0.4－0.7 | |
| 21 | 0.5－0.8 | |
| 25 | 0.5－0.8 |
Technical calculations
■Technical calculation for Flat Spring
Simplified Calculation Method for Force (for reference)
Stationary Levers
| Product name | Stationary Handles - with Cylindrical Knob |
|---|---|
| Part number | LRGNS6-63-B |
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria
Suitable as an adjustment handle
Available sizes
■Grip Lever (Stationary Lever, Grip Type)
| Handle | Lever | |
|---|---|---|
| Material | Material | Surface Treatment |
| (Black)Phenol resin (Red) Melamine Resin | 12L14 Carbon Steel | Matt Chrome Plating (Silver) |
| Black Oxide(Black) | ||
| 303 Stainless Steel | ― | |
■Sizes and Dimensions
| Screw Dia. (Coarse) | Length (mm) | Handle Color | Handle Dia. (mm) |
|---|---|---|---|
| Ｍ6 | 63 | R (Red) B (Black) | 17 |
| 80 | |||
| 100 | |||
| Ｍ8 | 80 | 21 | |
| 100 | |||
| 125 | |||
| Ｍ10 | 100 | 25 | |
| 125 | |||
| 160 | |||
| Ｍ12 | 125 | 28 | |
| 160 | |||
| 200 |
IDEA NOTE Simple adjustment using lever
Retains the load of the flat spring and allows simple vertical position adjustment using a lever.
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It is configured so that each sub-assembly unit can be used as it is or edited.
Application Overview
Purpose
- Illuminates the workpiece with a laser and projects its magnified image on the screen.
- With the flat spring retaining the load, simple vertical position adjustment is possible.
Points for use
- The vertical position of the laser is adjusted by moving the lever up and down.
Target workpiece
- Resin case
- Small workpiece outer dimensions: φ40 x H100
- Large workpiece outer dimensions: φ40 x H200
Design Specifications
Operating Conditions or Design Requirements
- Outer dimensions: W260 x D150 x H260
Required Performance
- The retaining force of the flat spring can changed by adjusting the set screw.
Selection Criteria for Main Components
- Flat spring
- Selected to allow easy adjustment of the laser position.
- Stationary lever
- Selected for manual operation.
Design Evaluation
Verification of main components
- The retaining force of the thin flat spring is verified.
- Flat spring
- Spring constant=Young's modulus（=186000N/mm ² )×plate width(=6mm)×Plate thickness ³ (=0.5 ³ mm ³ )/(4×Length ³ (20 ³ mm ³ ))=186000×6×0.5 ³ /(4×20 ³ )=4.36 N/mm
- Load=spring constant（4.36 N/mm）×deflection（5mm）=4.36×5=21.8 N
Other Design Consideration
- The laser projector is slightly inclined to ensure the entire workpiece image will be projected.
- The flat spring load can be adjusted by pressing the flat spring on both sides instead of tightening the set screws.
- Since the laser light could be radiated into a worker's eyes, a transparent acrylic board is installed in front of the projector to attenuate the laser light.
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