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No.000151 Fixture with Fine XY Position Adjustment
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15
Low-cost and easy fine position adjustment
Related Category
Slotted Hole Washer
| Product name | Metal Washers/with Slotted Hole&Pilot |
|---|---|
| Part number | WLHS6 |
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria
Suitable for providing the redundancy along thrust direction
Available sizes
■Slotted Hole Washer (Pilot Type)
| Material | Surface Treatment |
|---|---|
| EN 1.1191 Equiv. | Electroless Nickel Plating |
| EN 1.4301 Equiv. | - |
■Sizes and Dimensions
| O.D. (mm) | Applicable screw |
|---|---|
| 20 | M4 |
| 22 | M5 |
| 26 | M6 |
| 30 | M8 |
| 38 | M10 |
| 46 | M12 |
Circular Posts
| Product name | Circular Posts/One End Threaded/One End Tapped/Standard Wrench Flat |
|---|---|
| Part number | PETGS20-160-SC100-M8-N8 |
| Features | L dimension, thread diameter and with or without wrench flats are selectable. |
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria
Suitable as fixing bracket for equipment
Available sizes
■Circular posts (One end threaded, one end tapped with Wrench Flats, L dims. Fixed)
| Material | Surface Treatment |
|---|---|
| EN 1.0038 Equiv. | - |
| Black Oxide | |
| Electroless Nickel Plating | |
| Trivalent Chromate (Black) | |
| EN 1.4301 Equiv. | - |
■Sizes and Dimensions
| Shaft DIA. (mm) | Length (mm) 0.5mm Increment | Wrench Flats Position (mm) 1mm Increment |
|---|---|---|
| 5 | 15 - 50 | 0 - 42 |
| 6 | 15 - 50 | 0 - 42 |
| 8 | 20 - 150 | 0 - 142 |
| 10 | 20 - 350 | 0 - 342 |
| 12 | 25 - 400 | 0 - 390 |
| 15 | 30 - 500 | 0 - 490 |
| 20 | 40 - 500 | 0 - 490 |
| 25 | 55 - 600 | 0 - 590 |
| 30 | 65 - 700 | 0 - 685 |
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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.
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Each sub-assembly unit can be used as it is or can be edited.
Application Overview
Purpose
- Purpose
- To finely adjust the position between the workpiece and the marking press in X and Y directions.
- Operation
- The slotted hole washers provide single-direction guidance (X- or Y-axis) when adjusting the position. Once the position adjustment is complete, fix the position of the marking press by tightening mounting screws in the slotted hole washers.
Points for use
- Be sure to take protection/safety measures against laser light.
Target workpiece
- Shape: name plate
- Size: W50 x D100 x H2mm
- Weight: 40g
Design Specifications
Operating Conditions or Design Requirements
- X-direction stroke: ±4mm
- Y-direction stroke: ±4mm
- Outer dimensions: W686.1 x D287.1 x H220mm
Required Performance
- Positioning accuracy: ±0.1mm
- Load weight: 25kg
Selection Criteria for Main Components
- Adjusting Bolt
- To achieve a low-cost and easy adjustment mechanism, bolts that can be adjusted manually were selected.
Design Evaluation
Verification of main components
- Verification of possible manual operation of the bolt while adjusting the workpiece position.
- Check of operating force of bolt during adjustment
- Conditional value: marking press + marking press slide base = mass of workpiece: M = 25kg, gravitational acceleration g = 9.8m/s², friction coefficient: µ = 0.2 (metal and metal) , adjusting bolt effective diameter: D = 8mm, lead: l = 1.25mm, lead angle: θ = 3.1°, friction angle: Ø, from µ = tan Ø = 0.2, Ø ≈ 11.2°
- Force required to move workpiece in X direction or Y direction: from Q = M x g x µ, Q = 25 x 9.8 x 0.2 = 49N
･ Q = { (2 / D) x T} / {tan (θ + Ø) }
T = Q x tan (θ + Ø) x (D / 2) = 49 x 0.254 x (8 / 2) = 49.7N･mm
Therefore, it is sufficiently possible for a worker to make adjustment manually.
Other Design Consideration
- The portion of each guide plate where the adjusting bolt is attached shall be a slotted hole, which prevents X-direction adjustment from being interrupted by the Y-direction adjusting bolts or Y-direction adjustment from being interrupted by the X-direction adjusting bolts.
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