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- > No.000273 Guide Setup Changing Mechanism
No.000273 Guide Setup Changing Mechanism
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The guides of the transfer conveyor can be changed continuously.
Relevant category
Tensioner Units
| Product name | Tensioner Units |
|---|---|
| Part number | TNSR10-Y28-F10 |
| Features | Tensioner unit easy to assemble. Can be used by chain or belt drive. |
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria
Utilizing a commercially available part diminishes design time.
Available sizes
■Tensioner Units
| Material | Surface Treatment | |||
|---|---|---|---|---|
| Fixing Plate | Tension Pin | Slide Plate | Tension Block | |
| 1018 Carbon Steel-D | 1045 Carbon Steel | 1045 Carbon Steel (precision casting) | 1018 Carbon Steel-D | Black Oxide |
| Electroless Nickel Plating | ||||
■Sizes and Dimensions
| Tension Pin Shaft Dia. | 1mm Increments | Stroke | A | B | T | J | Z | |
|---|---|---|---|---|---|---|---|---|
| Y | F | |||||||
| 10 | 10～50 | 8～50 | 25 | 120 | 50 | 6 | 24 | 21 |
| 12 | ||||||||
| 15 | 12～60 | 10～50 | 25 | 125 | 55 | 9 | 31 | 29 |
| 17 | 30 | 140 | 60 | 30 | ||||
| 20 | ||||||||
Idlers with Teeth
| Product name | Flanged Idlers with Teeth - P2M / P3M / P5M / P8M / 2GT / 3GT / 5GT / 8YU |
|---|---|
| Part number | AGTF24GT5120 |
| Features | Can be used as the tension adjuster for timing belts or as the pulley on the driven side. |
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria
Select commercially available item because it simplifies the design.
Available sizes
■Flanged Idlers with Teeth - P2M / P3M / P5M / P8M / 2GT / 3GT / 5GT / 8YU
| Type | Material | Surface Treatment | |||
|---|---|---|---|---|---|
| Center Bearing | Both Sides Bearing | Main Body | Flange | Bearing | |
| ○ | ○ | 2017 Aluminum Alloy | 5052 Aluminum Alloy | Steel | Clear Anodize |
| - | - | Hard Clear Anodize | |||
| ○ | ○ | 1045 Carbon Steel | Low Carbon Steel | Black Oxide | |
■Sizes and Dimensions
| Number of Teeth | Applicable Belt | Shaft Dia. | Standard Circle Dia. | O.D. | Tooth Width |
|---|---|---|---|---|---|
| 40 | GT2060 | 6 | 25.46 | 24.96 | 30 |
| GT2090 | 6 | ||||
| 30 | GT3060 | 6 | 28.65 | 27.89 | 32 |
| GT3090 | 6 | ||||
| 20 | GT5090 | 8 | 31.83 | 30.69 | 35 |
| GT5120 | 8 | ||||
| 24 | GT5090 | 10 | 38.20 | 37.06 | 42 |
| GT5120 | 10 | ||||
| 28 | GT5090 | 10 | 44.56 | 43.42 | 48 |
| GT5120 | 10 | ||||
| 30 | GT5090 | 12 | 47.75 | 46.61 | 51 |
| GT5120 | 12 | ||||
| 20 | YU8150 | 20 | 50.93 | 49.56 | 62 |
| YU8200 | 20 | ||||
| 30 | YU8150 | 25 | 76.39 | 75.02 | 85 |
| YU8200 | 25 | ||||
| YU8250 | 25 |
Lead screw
| Product name | Lead Screws - Both Ends Stepped |
|---|---|
| Part number | MTSYW16-545-F20-V10-S65-Q10-X200 |
Selection criteria
Select a Lead screw with both left and right hand threading.
Available sizes
■Lead Screws - Both Ends Stepped
| Material | Surface Treatment | Compatible Lead Screw Nut | |
|---|---|---|---|
| Type | Material | ||
| 1045 Carbon Steel | − | Right / Left-hand Thread | Brass |
| Black Oxide | |||
| Low Temp. Black Chrome Plating | |||
| 303 Stainless Steel | − | ||
■Sizes and Dimensions
| Screw Shaft Nominal | Pitch | Overall Length 1mm Increments |
|---|---|---|
| 14 | 3 | 80〜1000 |
| 16 | 100〜1200 | |
| 18 | 4 | 150〜1200 |
| 20 | ||
| 22 | 5 | |
| 25 | ||
| 28 | ||
| 32 | 6 | 200〜1200 |
Accuracy Info
■Lead Screw: Screw Shaft Runout Tolerance (Max.)
(mm)
| Shaft Dia. | Screw Shaft Length | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| -125 | 126 -200 | 201 -315 | 316 -400 | 401 -500 | 501 -630 | 631 -800 | 801 -1000 | 1001- 1250 | 1251- 1600 | 1601- 2000 | |
| φ8 | 0.1 | 0.14 | 0.21 | 0.27 | 0.35 | - | - | - | - | - | - |
| φ10-12 | 0.09 | 0.12 | 0.16 | 0.21 | 0.27 | 0.35 | 0.46 | 0.58 | - | - | - |
| φ14 | 0.09 | 0.11 | 0.13 | 0.16 | 0.2 | 0.25 | 0.32 | 0.42 | - | - | - |
| φ16 | 0.09 | 0.11 | 0.13 | 0.16 | 0.2 | 0.25 | 0.32 | 0.42 | 0.55 | 0.73 | 1 |
| φ18-20 | - | 0.11 | 0.13 | 0.16 | 0.2 | 0.25 | 0.32 | 0.42 | 0.55 | 0.73 | 1 |
| φ22-32 | - | 0.09 | 0.11 | 0.13 | 0.16 | 0.19 | 0.23 | 0.3 | 0.38 | 0.5 | 0.69 |
| φ36-50 | - | 0.11 | 0.11 | 0.11 | 0.13 | 0.15 | 0.17 | 0.22 | 0.27 | 0.34 | 0.46 |
■Lead Screw Accuracy Standards
| Item | Content |
|---|---|
| Allowable Dimension and Tolerance | JISB0217 0218 |
| Screw Accuracy | 7e Class |
| Nut Accuracy | 7H Class |
| Single Pitch Error | ±0.02 |
| Accumulated Pitch Error | ±0.15/300mm |
| Length Tolerance | JISB0405 (medium class) |
| Screw Shaft End DIA. Tolerance | h7 |
Technical calculations
■Lead Screw and Lead Screw Nut Selection Steps
Calculate Contact Pressure P and Sliding Velocity V based on conditions of use to check that no abnormal wear will occur.
Plot the calculated P and V values against the PV value graph and confirm the intersection.
If the intersection falls inside of line (1) and (2), it is determined that abnormal wear would not occur
Determine Conditions of Use
↓
Lead Screw and Lead Screw Nut Temporary Selection
↓
(1) Contact surface pressure P, (2) Sliding speed V calculations
Verify that the value is within (1) and (2) of the PV value graph
↓
Calculate Screw Efficiency η and Load Torque T
(axial load, rotational speed)
(lead screw and lead screw nut material)
↑
(If not good)
PV Value Graph
- (1) Steel (lubrication) - Brass
- (2) Steel (non-lubrication) - Plastic
(1) Contact Surface Pressure P (N/mm²)
- Fs: Shaft Axial Load (N)
- F0: Allowable Dynamic Thrust (N) -> Nuts for Lead Screw Specifications
Thrust when contact surface pressure of the lead screw and nut becomes 9.8 (N/mm²) - α: 9.8 (brass) 0.98 (plastic)
(2) Sliding Speed V (m/min)
- d2: Screw Shaft Effective DIA. → From Lead Screw Specifications Table
- d: Screw Shaft Lead Angle (deg.) -> Lead Screw Specifications
- n: Screw Shaft Rotation per Minute (min-1)
(3) Screw Efficiency η
- μ: Dynamic Friction Coefficient
- d: Screw Shaft Lead Angle (deg.)
| Thread Shaft | Nuts for Lead Screws | Dynamic Friction Coefficient μ |
|---|---|---|
| Steel (lubrication) | Brass | 0.21 |
| Steel (non-lubrication) | Polyacetal/ PPS Resin with Sliding Property | 0.13 |
(4) Load Torque (N・cm)
- Fs: Shaft Axial Load
- η: Screw Efficiency
- R: Lead (cm)
IDEA NOTE Continuous changeover of the workpiece guides
The guides are moved to any width by rotating the left and right screws with a motor.
-
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CAD Download (Unit Assembly)
CAD Download: File Format
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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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* The part in the frame is a sub-assembly unit.
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- * Unit assembly Data consists of some sub-assemblies.
It is configured so that each sub-assembly unit can be used as it is or edited.
Application Overview
Purpose
- Motor drive is able to adjust the guides as needed.
- Guide stays in sync because both left and right hand lead screws are used.
Points for use
- The motor moves the guides to a specified width.
Target workpiece
- Box
- External dimensions: W150 ~ 300 ｘ H150 x L400mm
- Workpiece mass: 3 - 5kg
Design Specifications
Operating Conditions or Design Requirements
- External Dimensions
W500ｘH340ｘL1000mm - Guide dimensions
H220ｘL1000ｘT9mm
Required Performance
- Positioning precision: ±1mm unit
Selection Criteria for Main Components
- Motor
- Select a motor that can handle the weight of the guide.
Design Evaluation
Verification of main components
- Verify allowable motor torque for meeting the required torque.
- Motor
- Conditional values: Guide weight W = 17 kg/piece, thread pitch P = 0.003m, thread efficiency η = 0.24, guide friction coefficient μ = 0.1, gravitational acceleration g = 9.8m/s², number of guides 2pieces
- Required torque: T = W × g × μ × P/(2 × π × η) Thus, T = (17 × 2) × 9.8 × 0.1 × 0.003/(2 × π × 0.24) = 0.07(N・m) < 0.57(N・m) (60Hz)
- Safety factor: 0.57/0.07 = 8.1
Other Design Consideration
- An idler is installed at the middle point of the timing belt to adjust tension.
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