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No.000147 Laser Height Adjustment Mechanism
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Simple height adjustment without the use of tools
Related Category
Flat Spring
| Product name | Flat Springs |
|---|---|
| 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 as the load element for sliding
Risk info.
Possibility of trial and error to obtain the correct load value
Available sizes
■Flat Spring (Two-point Bending Type)
| Material |
|---|
| EN 1.4301 Equiv. -CSP |
■Sizes and Dimensions
| Hole Machining | Width [H] (mm) | Plate Thickness (mm) 0.1mm 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 Handles
| 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 holder for unit transfer
Available sizes
■Grip Lever (Stationary Lever, Grip Type)
| Handle | Lever | |
|---|---|---|
| Material | Material | Surface Treatment |
| (Black) Phenol resin (Red) Melamine Resin | EN 1.0718 Equiv. | Matt Chrome Plating (Silver) |
| Black Oxide (Black) | ||
| EN 1.4305 Equiv. | - | |
■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 load with a flat spring and allows simple vertical position adjustment without the use of tools.
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Application Overview
Purpose
- Irradiates workpiece with a laser and projects its magnified image on the screen.
- As the flat spring retains the load, simple vertical position adjustment is possible without using tools.
Points for use
- The vertical position of the laser is adjusted by moving the lever up and down according to the workpiece height.
Target workpiece
- Resin case
- Small workpiece outer dimensions: Ø40 x H100
- Large workpiece outer dimensions: Ø40 x H200
Design Specifications
Operating Conditions or Design Requirements
- Outer dimensions: W260 x D150 x H260
Required Performance
- Adjust the retaining force of the flat spring using the set screw as needed.
Selection Criteria for Main Components
- Flat spring
- Selected to allow easy adjustment of the laser position.
- Stationary lever
- Selected for manual operation.
- Laser projector
- Selected to allow image processing.
Design Evaluation
Verification of main components
- The laser position retaining force of the thin flat spring is verified.
- Flat spring
- Spring constant=Young's modulus (= 186000N/mm²) x plate width ( = 6mm) x Plate thickness³ (= 0.5³ mm³) / (4 x Length³ (20³ mm³)) = 186000 x 6 x 0.5³ / (4 x 20³) = 4.36N/mm
- Load=spring constant (4.36N/mm) x deflection (5mm) = 4.36 x 5=21.8N
Other Design Consideration
- The optical axis of the laser projector is set to be slightly inclined so as to project the image of the entire workpiece.
- Adjustment of the flat spring load is made with upper and lower set screws, by pressing the flat spring at both sides, not by tightening the set screws.
- As the laser light could be radiated to a worker's eyes, a transparent acrylic board is installed in front of the projector to attenuate the laser light.
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