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No.000050 Adjustment Mechanism
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Adjusting the angle at the offset center point.
Relevant category
Adjusting Bolts
| Product name | Adjusting Bolts- Knurled Knobs |
|---|---|
| Part number | AJSTKS6-50 |
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria
Effective for Precise Adjustment
Available sizes
■Adjusting Bolts- Knurled Knobs
| Screw Type | Material | Surface Treatment |
|---|---|---|
| Coarse Thread | 1045 Carbon Steel | Black Oxide |
| Electroless Nickel Plating | ||
| 304 Stainless Steel | − |
■Sizes and Dimensions
| Screw Dia. (coarse) | Thread Length (5mm increments) | Block Bearing Part | Knob | ||
|---|---|---|---|---|---|
| Diameter | Length | Thickness | O.D. | ||
| M3 | 10〜20 | φ2.5 | 7 | 4 | φ16 |
| M4 | 10〜30 | φ3.5 | |||
| M5 | 10〜40 | φ4.5 | 9 | 6 | φ20 |
| M6 | 15〜50 | φ5.5 | |||
| M8 | 20〜50 | φ7.5 | 12 | ||
Accuracy Info
■Accuracy of the Adjusting Bolts
Block Support
Shaft Dia. Tolerance: -0.1/-0.2
Length Tolerance: +0.2/+0.1
Surface Roughness: Ra1.6
Blocks for Adjusting Bolts
| Product name | Blocks for Adjusting Bolts- Standard Type |
|---|---|
| Part number | AJKCM6-30 |
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria
Effective for Precise Adjustment Manually
Available sizes
■Blocks for Adjusting Bolts- Standard Type
| Screw Type | Material | Surface Treatment |
|---|---|---|
| Coarse Thread | 1045 Carbon Steel | Black Oxide |
| Electroless Nickel Plating | ||
| 304 Stainless Steel | − |
■Sizes and Dimensions
| (applicable bolt screw dia.) | Bolt Bearing Slot Width | Center Height [H] | Overall Height ([H] + listed below) | Overall Thickness | Overall Width | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 5 | 6 | 8 | 10 | 12 | 15 | 20 | 25 | 30 | |||||
| M3 | 2.5 | ○ | ○ | ○ | 5 | 7 | 26 | ||||||
| M4 | 3.5 | ○ | ○ | ○ | ○ | ||||||||
| M5 | 4.5 | ○ | ○ | ○ | ○ | ○ | 6 | 9 | 32 | ||||
| M6 | 5.5 | ○ | ○ | ○ | ○ | ○ | ○ | ||||||
| M8 | 7.5 | ○ | ○ | ○ | ○ | ○ | 8 | 12 | 38 | ||||
| M10 | 9.5 | ○ | ○ | ○ | ○ | ○ | 10 | 16 | 50 | ||||
| M12 | 11.5 | ○ | ○ | ○ | ○ | ○ | 11 | 19 | 65 | ||||
| M16 | 15.5 | ○ | ○ | ○ | ○ | ||||||||
Accuracy Info
■Accuracy of Blocks for Adjusting Bolts
Slot Width Tolerance: +0.1/0
Overall Thickness Tolerance: 0/-0.2
Scale Plates
| Product name | Scale Plates |
|---|---|
| Part number | MEPCSH-LC48-HC |
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria
Provides measure scale
Available sizes
■Scale Plates
| Width | Scale Type | Material | Plate Thickness | Length |
|---|---|---|---|---|
| 8 | Zero at Left | 304 Stainless Steel | 0.5 | 100・200 |
| Zero at Right | 100・200 | |||
| Center Divided | 300 | |||
| 12 | Zero at Left | 100・200 | ||
| Zero at Right | 100・200 | |||
| Center Divided | 300 |
* Adhesive tapes are not provided.
Use the Ø3.4 x 2 screw mounting holes (5mm from the both ends).
* Length cut is available as alterations.
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Application Overview
Purpose
- Purpose
- This adjustment mechanism is mounted to a loader and adjusts the inclination angle of a dispenser.
- Operation
- By loosening the rotary plate fixing bolt and turning the adjusting bolt, the inclination angle of the dispenser is adjusted.
Points for use
- Manual angle adjustment.
Target workpiece
- Shape: circuit board
- Size: W65 x D20 x t1.6mm
- Weight:5g
Design Specifications
Operating Conditions or Design Requirements
- Dispenser inclination angle adjustment: 45°±8° (37° to 53°)
- Outer dimensions: W123 x D120 x H56mm
Required Performance
- Depends on the positioning accuracy of the loader, etc.
Selection Criteria for Main Components
- Cam Follower
- A cam follower (CFFRS6-16) that has an outer ring thickness suitable for pressing the rotary plate (thickness: 13mm) and a size small enough to be mounted on this mechanism is selected.
Design Evaluation
Verification of main components
- Verify that the rotary arm and adjusting bolt can create the required inclination angle resolution.
- Calculation of resolution of angle adjustment mechanism.
- Conditional value: adjustable angle θ = 8°, adjusting bolt thread diameter M6, pitch of M6 thread P = 1mm, movable range of adjusting nut L = 16.4mm, distance between rotation center of rotary arm and adjusting bolt (rotary arm length) R = 117mm
- As the resolution at center of adjustment range: Δθ1, and the travel distance per rotation of adjusting bolt = pitch of M6 thread P = 1, sinΔθ1 = P/R = 1
Δθ1 = sin-1(P/R) = sin-1(1/117) = 0.490°/rotation - Where resolution at adjustment range limit: Δθ2, angle formed by rotary arm and adjustment range center : α, distance between adjusting nut and adjustment range center: L = 16.4, angle at center formed by rotary arm adjustment range center and arm travel made when adjusting bolt is rotated one revolution: β, as α - β = Δθ2 and sinα = L/R, sinβ = (L - P)/R,
Δθ2 = α - β = sin-1(L/R) - sin-1((L - P)/R) = sin-1(16.4/117) - sin-1 ((16.4 - 1)/117) = 8.0578 - 7.5634 = 0.494°/rotation
Other Design Consideration
- Applying a preload to the cam follower on the pushing side ensures the adjustment mechanism will not have backlash in the radial direction.
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