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No.000261 Workpiece Clamp Mechanism
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A work piece clamping and unclamping mechanism.
Relevant category
Hinge Bases
| Product name | Hinge Bases - U-Shaped |
|---|---|
| Part number | HKPB6-H25 |
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria
Select a standard product that is easy to obtain as a fulcrum for the clevis cylinder.
Available sizes
■Hinge Bases - U-Shaped
| Type | Material | Surface Treatment |
|---|---|---|
| U-Shaped | 1045 Carbon Steel | Black Oxide |
| Electroless Nickel Plating | ||
| 304 Stainless Steel | - |
■Sizes and Dimensions
| Pin Dia. | Pin hole height in 1mm increments | U-shape dimensions |
|---|---|---|
| 2 | 15～20 | 4 |
| 3 | 20～25 | 6 |
| 4 | 8 | |
| 5 | 25～30 | |
| 6 | 10 | |
| 8 | 30～40 | |
| 10 | ||
| 12 | 12 | |
| 13 | ||
| 14 | 35～45 | |
| 15 | 16 | |
| 16 | ||
| 20 | 40～50 | 20 |
| 25 | 30 |
Hinge Pin
| Product name | Precision Pivot Pins - Flanged, Hex Socket Head, Threaded with Lock Nut |
|---|---|
| Part number | CLBRU6-32 |
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria
Select a lock nut type, which can be firmly mounted as a clevis pin.
Available sizes
■Precision Pivot Pins - Flanged, Hex Socket Head, Threaded with Lock Nut
| Material | Hardness | Surface Treatment | Included Nut Material | |
|---|---|---|---|---|
| Standard Nut | U Nut | |||
| 1045 Carbon Steel | - | Black Oxide | SWRCH Carbon Steel | 1018 Carbon Steel |
| 40-45HRC | ||||
| - | Electroless Nickel Plating | 304 Stainless Steel | 304 Stainless Steel | |
| 40-45HRC | ||||
| Plating Hardness 750HV - | Hard Chrome Plating | SWRM Low Carbon Steel | 1018 Carbon Steel | |
| Plating Thickness 3μm or more | ||||
| 304 Stainless Steel | - | - | 304 Stainless Steel | 304 Stainless Steel |
| 440C Stainless Steel | 45-50HRC | |||
| 45-50HRC Plating Hardness 750HV - | Hard Chrome Plating Plating Thickness 3μm or more | |||
■Sizes and Dimensions
| Pin Dia. | Pin Section Length (Configurable in 0.1mm Increments) | Head O.D. | Head Height | Thread Length | Thread Dia. X Pitch |
|---|---|---|---|---|---|
| φ4 | 10.0-50.0 | φ7 | 5 | 6 | M3×0.5 |
| φ5 | 10.0-60.0 | φ9 | M4×0.7 | ||
| φ6 | 10.0-100.0 | φ10 | 9 | M5×0.8 | |
| φ8 | 10.0-100.0 | φ13 | M6×1.0 | ||
| φ10 | φ16 | 12 | M8×1.25 | ||
| φ12 | 10.0-200.0 | φ18 | 16 | M10×1.5 | |
| φ13 | 20.0-200.0 | φ24 | 18 | M12×1.75 | |
| φ14 | |||||
| φ15 | |||||
| φ16 | 20.0-200.0 | ||||
| φ17 | |||||
| φ18 | 24 | ||||
| φ20 | φ27 | M16×2.0 | |||
| φ22 | 20.0-200.0 | ||||
| φ25 | φ30 |
Accuracy Info
■Pivot Pin (Flanged with Hex Socket with a Nut: Pin O.D. Tolerance (g6))
| Pin Dia. | Tolerance |
|---|---|
| φ4-φ6 | -0.004 -0.012 |
| φ8・φ10 | -0.005 -0.014 |
| φ12-φ18 | -0.006 -0.017 |
| φ20・φ22・φ25 | -0.007 -0.020 |
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CAD Download (Unit Assembly)
CAD Download: File Format
CAD Data Limitations
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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.
You will need to edit the Data so that it meets your specific design conditions. -
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It is configured so that each sub-assembly unit can be used as it is or edited. - The Data for fabricated parts is based on easy-to-edit dimensions and shapes in sketches and histories.
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* The part in the frame is a sub-assembly unit.
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Application Overview
Purpose
- Clamps work pieces using a flat spring.
- The work piece is held on the turntable using a linking mechanism, and unclamped through the use of a cam follower mounted on the table.
Points for use
- Rotates the turn table using separate units and stops in the unclamping position. The work piece can then be removed, and operated for the next clamping and rotation.
Target workpiece
- Material: ABS disc
- External dimensions: φ16 x 6mm
- Workpiece mass: 2g
Design Specifications
Operating Conditions or Design Requirements
- Cylinder stroke: 30mm
- Deflection of the flat spring at clamp 1.5mm
- Deflection of the flat spring at unclamp 3mm.
- External dimensions: W296 x D244 x H237mm
Required Performance
- Spring load: 1N (with the workpiece clamped)
- Flat spring material: 304 Stainless Steel
Selection Criteria for Main Components
- Flat spring
- Can utilize the available space and meets the clamping load needs.
Design Evaluation
Verification of main components
- Flat spring
- Required plate thickness: t
Plate width: b = 7mm
Clamp force: P = 1N
Young's modulus: E = 199GPa
Load position: l = 37mm
Deflection at clamp: δ = 1.5mm
Number of flat springs used: n = 2pieces
t=((12xP/nxl³)/(3xδxExb))⅓
=((12x1/2x37³)/(3x1.5x199x10³x7))⅓
=0.36
From t > 0.36mm, t is set to be t = 0.4mm.
- Required plate thickness: t
Other Design Consideration
Explore Similar Application Examples
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