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No.000306 Escapement mechanism
45
45
Gear-driven opening/closing mechanism
Related Category
Hard Locking Bearing Nuts
| Product name | Hard Locking Bearing Nuts |
|---|---|
| Part number | HLBC15 |
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria
Easier to use compared to standard bearing nuts.
Available sizes
■Hard Locking Bearing Nuts
| Material | Hardness | Surface Treatment |
|---|---|---|
| EN 1.0038 Equiv. | - | Parker |
| Electroless Nickel Plating | ||
| EN 1.1191 Equiv. Thermal Refined | 22 ~ 28HRC | Parker |
| EN 1.4301 Equiv. | - | - |
■Sizes and Dimensions
| Screw Dia. (Fine) | Nut O.D. | Setting Height | |
|---|---|---|---|
| Standard | Thin | ||
| 10 | 18 | 9.5 ~ 10.5 | - |
| 12 | 22 | ||
| 15 | 25 | 11.5 ~ 12.5 | |
| 17 | 28 | ||
| 20 | 32 | 13.5 ~ 14.5 | |
| 25 | 38 | 16.0 ~ 17.5 | 10.0 ~ 11.5 |
| 30 | 45 | ||
| 35 | 52 | 18.0 ~ 19.5 | 12.0 ~ 13.5 |
| 40 | 58 | 17.0 ~ 18.5 | 14.0 ~ 15.5 |
| 45 | 65 | 19.0 ~ 20.5 | 16.0 ~ 17.5 |
| 50 | 70 | 21.0 ~ 22.5 | 18.0 ~ 19.5 |
Stop Pins
| Product name | Stop Pins/Screw Type/T Standard |
|---|---|
| Part number | SSTEH17 |
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria
Low-priced fixture that can effectively support swinging parts.
Available sizes
■Stop Pins- Screw Type, T Standard
| Material | Hardness | Surface Treatment | |
|---|---|---|---|
| Head Height Fixed | Head Height Configurable | ||
| EN 1.7220 Equiv. | 46-50HRC | 32-38HRC | Electroless Nickel Plating |
| EN 1.4125 Equiv. | 50-55HRC | 40-45HRC | - |
■Sizes and Dimensions
| Opposite Side (mm) | Thickness (mm) | |
|---|---|---|
| Fixed | 0.5mm Increments | |
| 5.5A | 3 | 5.0 ~ 30.0 |
| 5.5 | 5 | |
| 7 | ||
| 8 | ||
| 10 | 5.0 ~ 30.0 | |
| 10B | 8 | |
| 13 | 5 | |
| 13A | 8 | |
| 13B | ||
| 14 | 5 | |
| 14A | 8 | |
| 14B | ||
| 17 | 5 | 5.0 ~ 30.0 |
| 17A | 8 | |
| 17B | ||
| 19 | 5 | |
| 19A | 8 | |
| 19B | ||
Accuracy Info
■Accuracy of Stop Pin
Thickness Tolerance (mm): +0.01/0
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CAD Data Download (Unit Assembly)
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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. - The Data for fabricated parts is based on easy-to-edit dimensions and shapes in sketches and histories.
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Application Overview
Purpose
- The opening/closing action of an arm, stopper, etc., is driven by gears.
Target workpiece
- Shape: stepped resin (PVC) part
- Size: D100 x H90mm
- Weight: 0.4kg
Design Specifications
Operating Conditions or Design Requirements
- Opening/closing arm oscillation angle: 25°
- Arm open (close) operation time: 0.2sec
- Operating pressure: 0.3Mpa
- Cylinder stroke: 50mm
- Piston speed: 250mm/sec
- Conveyor speed: 100mm/sec
- Distance workpiece moves in arm operation time: L = 100 x 0.2/1 = 20mm
- Outer dimensions: W247 x D410 x H279mm
Required Performance
- Load: 164N or less (30 workpieces)
Selection Criteria for Main Components
- To satisfy the required load, a Ø32 cylinder is selected.
Design Evaluation
Verification of main components
- The cylinder thrust load and the strength of the arm are verified.
- Selection of cylinder
Workpiece mass: m = 0.4kg
Number of workpieces: N = 30pieces
Friction coefficient between workpiece and conveyor: μ = 0.7
Total workpiece weight: M = 0.5 x 30 = 12kg
Load applied by workpiece: F1 = μ x M x 9.8 = 0.7 x 12 x 9.8 = 82N
If we use 2 as the safety factor, F2 = 2 x F1 = 164N
From cylinder thrust P = 207N,
F2 < P - Confirmation of strength of arm that receives workpiece load.
Arm width: b = 40mm
Arm plate thickness: t = 4.5mm
Arm length: L = 115mm
Bending stress applied to arm: σ1 = 6 x F1 x L/bt2 = 6 x 82 x 115/40 x (4.5)2 = 70N/mm²
Allowable bending stress of EN 1.0038 Equiv.: σ = 157N/mm²
Therefore, σ1 < σ
Other Design Consideration
- Space can be saved by installing the cylinder below the transfer surface.
- The cover of the whole conveyor including the peripheral devices also serves as a safety cover for the drive section.
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