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No.000139 Workpiece Clamp Station
14
14
Clamp mechanisms operated by pneumatic linear actuator.
Related Category
Precision Pivot Pins
| Product name | Precision Pivot Pins/Flanged/Threaded with Lock Nut |
|---|---|
| Part number | PCLBGHNU5-40 |
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria
Suitable for oscillation fulcrum to hold down the workpiece.
Available sizes
■Pivot pin (Lock nut with shoulder, L configurable type)
| Nut | Material | Hardness | Surface Treatment |
|---|---|---|---|
| Standard nut U-nut | EN 1.1191 Equiv. | - | Black Oxide |
| 40 - 45HRC | |||
| - | Electroless Nickel Plating | ||
| 40 - 45HRC | |||
| Plating Hardness: 750HV - | Hard Chrome Plating: Plating Thickness 3µm or more | ||
| EN 1.4301 Equiv. | - | - | |
| EN 1.4125 Equiv. | 45 - 50HRC |
■Sizes and Dimensions
| Pin Dia. (mm) | Length (mm) 0.1mm Increment | Screw Dia. (Coarse) |
|---|---|---|
| 4 | 5.0 - 50.0 | M3 |
| 5 | 5.0 - 60.0 | M4 |
| 6 | 10.0 - 100.0 | M5 |
| 8 | M6 | |
| 10 | M8 | |
| 12 | 15.0 - 200.0 | M10 |
| 13 | 20.0 - 200.0 | M12 |
| 14 | ||
| 15 | ||
| 16 | 20.0 - 200.0 | |
| 17 | ||
| 18 | ||
| 20 | M16 | |
| 22 | ||
| 25 | ||
| 30 | 40.0 - 200.0 |
Accuracy Info
■Accuracy information of pivot pin
■Pin Dia. Tolerance:
| Pin Dia. Tolerance (g6) | |
|---|---|
| 4 - 6 | - 0.004 - 0.012 |
| 8 ･ 10 | - 0.005 - 0.014 |
| 12 - 18 | - 0.006 - 0.017 |
| 20 - 30 | - 0.007 - 0.020 |
Air Linear Guides
| Product name | Air Linear Guides/MPPTU12 Series |
|---|---|
| Part number | MPPU12-45-SS |
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria
Handy as Drive Source requiring no guidance.
Available sizes
■Pneumatically driven linear guides
| I.D. of Cylinder | Horizontal (mm) | Vertical (mm) | Thickness (mm) | Stroke Length (mm) |
|---|---|---|---|---|
| Ø10 | 27 | 70 | 20 | 15 |
| 85 | 30 | |||
| 100 | 45 | |||
| Ø12 | 32 | 76.5 | 22 | 20 |
| 86.6 | 30 | |||
| 101.6 | 45 | |||
| 116.6 | 60 |
Selection steps
■Accuracy Information of Pneumatically Driven Linear Guides
Unit: mm
| Bore Dia. | Ø10 | Ø12 | ||
|---|---|---|---|---|
| Stroke | 15 / 30 / 45 | 20 / 30 / 45 | 60 | |
| Parallelism | Plane C to Plane A | 0.02 | 0.02 | |
| Plane D to Plane B | 0.02 | 0.02 | ||
| Running parallelism | Plane C to Plane A | 0.004 | 0.004 | 0.006 |
| Plane D to Plane B | 0.004 | 0.004 | 0.006 | |
| Squareness | Plane E to Plane A | 0.15 | 0.15 | |
| Plane E to Plane B | 0.15 | 0.15 | ||
| J Dimension Tolerance | ±0.025 | ±0.025 | ||
| F Dimension Tolerance | ±0.2 | ±0.2 | ||
| G Dimension Tolerance | ±0.2 | ±0.2 | ||
| H Dimension Tolerance | ±0.05 | ±0.05 | ||
Performance info.
■Performance info. of Pneumatically Driven Linear Guides
■Operating Pressure Range
Min. Operating Pressure (MPa): 0.15
Max. Operating Pressure (MPa): 0.70
Pressure Resistance (Mpa): 1.05
■Theoretical Thrust
Unit: N
| Tube I.D. | Operation Direction | Rod Dia. (mm) | Operating Pressure (MPa) | |
|---|---|---|---|---|
| 0.4 | 0.5 | |||
| Ø10 | Outstroke | Ø4 | 31 | 39 |
| Instroke | 26 | 33 | ||
| Ø12 | Outstroke | Ø5 | 45 | 57 |
| Instroke | 37 | 47 | ||
■Allowable Load Moment
| Stroke (mm) | Allowable Load Moment N･m | ||
|---|---|---|---|
| Pitching | Yawing | Rolling | |
| 15 / 30 / 45 | 1.8 | 2.0 | 1.9 |
| 20 / 30 / 45 / 60 | 3.0 | 3.4 | 3.8 |
Cam Follower
| Product name | Cam Followers/Flat Type/No Seal |
|---|---|
| Part number | CFFRS5-13 |
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria
Popular as lever holder.
Available sizes
■Cam follower (Flat type)
| Grease | Seal | Material | Accessory | |
|---|---|---|---|---|
| Not Provided | Provided | |||
| General | ○ | ○ | EN 1.3505 Equiv. | 1 Hex Nut (EN 1.1191 Equiv. Iron Oxide Black Coating) |
| ○ | ○ | EN 1.4125 Equiv. | Hex Nut 1pc. (EN 1.4301 Equiv. ) | |
| Low Dust Generation | - | ○ | ||
■Sizes and Dimensions
| Shaft DIA. (mm) | Outer Ring DIA. (mm) |
|---|---|
| 5 | 13 |
| 6 | 16 |
| 8 | 19 |
| 10 | 22 |
| 26 | |
| 12 | 30 |
| 32 | |
| 16 | 35 |
| 18 | 40 |
| 20 | 52 |
Accuracy Info
■Accuracy Information of Cam Followers
■Shaft Dia. Tolerance
| Shaft DIA. (mm) | h7 Tolerance |
|---|---|
| 5 | 0 - 0.012 |
| 6 | |
| 8 | 0 - 0.015 |
| 10 | |
| 12 | 0 - 0.018 |
| 16 | |
| 18 | |
| 20 | 0 - 0.021 |
■Outer Race Dia. Tolerance
| Outer Ring DIA. (mm) | Tolerance |
|---|---|
| 13 ･ 16 | 0 - 0.008 |
| 19 - 30 | 0 - 0.009 |
| 32 - 40 | 0 - 0.011 |
| 52 | 0 - 0.013 |
Performance info.
■Speeds･Loads (Load info.) of cam followers
| Shaft Dia. - Outer Ring Dia. (mm) | Basic Dynamic Load Rating (kN) | Basic Static Load Rating (kN) | Max. Allowable Load (kN) | Max. Rotational Speed (rpm) | |
|---|---|---|---|---|---|
| With Seal | No Seal | ||||
| 3 - 10 | 1.47 | 1.18 | 0.36 | 32900 | 47000 |
| 4 - 12 | 2.06 | 2.05 | 0.78 | 25900 | 37000 |
| 5 - 13 | 3.14 | 2.77 | 1.42 | 20300 | 29000 |
| 6 - 16 | 3.59 | 3.58 | 2.11 | 17500 | 25000 |
| 8 - 19 | 4.17 | 4.65 | 4.73 | 14000 | 20000 |
| 10 - 22 | 5.33 | 6.78 | 5.81 | 11900 | 17000 |
| 10 - 26 | |||||
| 12 - 30 | 7.87 | 9.79 | 9.37 | 9800 | 14000 |
| 12 - 32 | |||||
| 16 - 35 | 12.0 | 18.30 | 17.30 | 7000 | 10000 |
| 18 - 40 | 14.7 | 25.2 | 26.1 | 5950 | 8500 |
| 20 - 52 | 20.7 | 34.8 | 32.1 | 4900 | 7000 |
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Application Overview
Purpose
- A cylinder employing an automatic mechanism unclamps the workpiece as the pusher mounted on the cylinder presses against the hinge block..
- Clamps the workpiece via the tension springs attached to the work holder.
Points for use
- The workpiece is suctioned and transferred to the charging/discharging position by another unit.
Target workpiece
- Workpiece: resin case
Material:ABS
outer dimensions:66 x 27 x 15
Design Specifications
Operating Conditions or Design Requirements
- Cylinder Stroke: 43mm
- Deflection of tension spring: 5mm
- Outer dimensions: W240 x D240 x H266 (overall dimensions)
Required Performance
- Cylinder thrust of 21N or higher
(Following the calculation process, a cylinder with a cylinder thrust with a safety factor 1.5 times the spring force was selected.) - Required clamping force: 10N
Selection criteria for Main Components
- Cylinder
- Stroke adjustment is easy and load requirement is satisfied.
Design Evaluation
Verification of main components
- A spring with the required clamping force was selected, and the cylinder for unclamping was selected according to the spring force.
- Load of tension spring
- Required clamping load: FA = 10N
- Spring deflection during clamping: x = 11mm
- Number of used springs: n = 2 pieces
- Spring initial tension: f = 1.67N
- FA = n (kx + f)
- From k = (FA / n - f) / x = (10 / 2 - 1.67) / 11 = 0.30,
- Spring constant: k = 0.32N/mm was selected.
- Cylinder thrust
- Spring force during unclamping: FB
- Spring deflection during unclamping: d = 16mm
- FB = n (kd + f)
- = 2 x (0.32 x 16 + 1.67)= 13.58N
- If safety factor is set to 1.5, 13.58 x 1.5 ≈ 20.37N.
- When cylinder thrust P > FB, the specification is satisfied.
Other Design Consideration
- As the workpiece needs to be held while it is transferred by a turn table (another unit), the mechanism keeps clamping the workpiece using a spring.
- The pusher (cylinder) stands by at the unclamp position and the turn table (another unit) transfers the workpiece to the unclamp position.
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