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No.000264 Simplified Clamping Jig
Spring loaded jig for manual operation.
Related Category
Compression Springs
| Product name | Round Wire Coil Springs/Deflection 45%/I.D. Referenced |
|---|---|
| Part number | VUR10-70 |
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria
Select this item so that a workpiece can be clamped at an appropriate load
Available sizes
■Compression Springs - Inner Diameter Selectable, Stainless Steel
Material: EN 1.4301 Equiv.
■Sizes and Dimensions
| Winding Dia. (mm) | Free Length (mm) | Load N(kgf) |
|---|---|---|
| 8 | 20 | 3.53(0.36) |
| 25 | 4.41(0.45) | |
| 30 | 5.29(0.54) | |
| 35 | 6.17(0.53) | |
| 40 | 7.06(0.72) | |
| 45 | 7.94(0.81) | |
| 50 | 8.82(0.90) | |
| 55 | 9.70(0.99) | |
| 60 | 10.58(1.08) | |
| 65 | 11.47(1.17) | |
| 70 | 12.60(1.26) | |
| 80 | 14.12(1.44) | |
| 10 | 20 | 3.53(0.36) |
| 25 | 4.41(0.45) | |
| 30 | 5.29(0.54) | |
| 35 | 6.17(0.53) | |
| 40 | 7.06(0.72) | |
| 45 | 7.94(0.81) | |
| 50 | 8.82(0.90) | |
| 55 | 9.70(0.99) | |
| 60 | 10.58(1.08) | |
| 65 | 11.47(1.17) | |
| 70 | 12.60(1.26) | |
| 80 | 14.12(1.44) | |
| 12 | 25 | 4.41(0.45) |
| 30 | 5.29(0.54) | |
| 35 | 6.17(0.53) | |
| 40 | 7.06(0.72) | |
| 45 | 7.94(0.81) | |
| 50 | 8.82(0.90) | |
| 55 | 9.70(0.99) | |
| 60 | 10.58(1.08) | |
| 65 | 11.47(1.17) | |
| 70 | 12.35(1.26) | |
| 80 | 14.11(1.44) | |
| 90 | 15.88(1.62) |
クランプ用先端金具
| Product name | トグルクランプ用先端ボルト |
|---|---|
| Part number | TGSPM4 |
| Features | 止め輪がないので取り付けが楽です |
* Orange colored cells in the table below indicate the part numbers used in this example.
Available sizes
■トグルクランプ用先端ボルト(スプリング付樹脂パッド省スペースタイプ)
| Pad | Bolt | バネ | |
|---|---|---|---|
| Material | Material | Surface Treatment | Material |
| ポリアセタール(白) | EN 1.1191 Equiv. | Black Oxide | EN 1.4301 Equiv. |
■Sizes and Dimensions
| 取付ねじ径 | ストローク | Overall Length | ねじ部長さ | パッド径 |
|---|---|---|---|---|
| M4 | 3 | 34.5 | 20 | Ø12 |
| M6 | 4 | 50 | 30 | Ø13 |
| M8 | 8 | 60 | 30 | Ø14 |
Selection steps
からくり情報
Accuracy Info
Performance info.
長尺ローレット付カバーボルト
| Product name | カバーボルト 長尺ローレット付タイプ |
|---|---|
| Part number | GUTBR3-3.5-6 |
| Features |
* Orange colored cells in the table below indicate the part numbers used in this example.
Available sizes
■カバーボルト 長尺ローレット付タイプ
| Screw DIA. | ねじ部長さ | Length under head | ローレット軸 | 首下軸径 | Material | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 6 | 8 | 10 | 12 | 16 | 20 | 25 | 30 | O.D. | Length | ||||
| M3 | 2 | ○ | ○ | ○ | ○ | Ø5.5 | 10 | Ø2.2 | EN 1.4305 Equiv. | ||||
| 3.5 | ○ | ○ | ○ | ○ | |||||||||
| 4 | ○ | ○ | ○ | ||||||||||
| M4 | 3 | ○ | ○ | ○ | ○ | ○ | Ø7 | 16 | Ø3 | ||||
| 5 | ○ | ○ | ○ | ||||||||||
| M5 | 3 | ○ | ○ | ○ | ○ | ○ | Ø8.5 | 20 | Ø3.9 | ||||
| 6 | ○ | ○ | ○ | ||||||||||
| M6 | 4 | ○ | ○ | ○ | ○ | ○ | Ø10 | 30 | Ø4.5 | ||||
| 8 | ○ | ○ | ○ | ○ | |||||||||
| M8 | 5 | ○ | ○ | ○ | ○ | Ø13 | 36 | Ø6.3 | |||||
| 10 | ○ | ○ | ○ | ||||||||||
Selection steps
からくり情報
Accuracy Info
Performance info.
Technical calculations
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Application Overview
Purpose
- The jig can hold the workpiece by the force of a compression spring.
Points for use
- A slotted hole is in place for manual removal and insertion of workpiece.
Target workpiece
- Circuit board: W98 x D88 x H3
- Mass of circuit board: 200g
- Resin case: W98 x D80 x H50
- Mass of resin case: 30g
Design Specifications
Operating Conditions or Design Requirements
- Outer dimensions: W200 x D200 x H70
- Unclamp stroke: 19mm
Required Performance
- Workpiece retention load
- 12.8N
Selection Criteria for Main Components
- Round coil spring
- A spring with a spring constant capable of clamping the workpiece is selected.
Design Evaluation
Verification of main components
- A spring that satisfies the workpiece clamp load is selected.
- Workpiece clamp spring load
- Conditional value: number of used springs: 2, workpiece clamp load: F = 12.8N, spring set length: 48mm, spring free length: 70mm, deflection during workpiece clamp: x = 22mm
- Calculation formula: reaction force F = kx, from k = (F/spring constant)/x, k = (12.8/2)/22 = 0.29
-> Spring constant: k = 0.29N/mm is selected.
Other Design Consideration
- With steps machined in the clamp plate, a circuit board can be held from the top.
- A recess is provided in the base plate to serve as rough alignment of the workpiece width-wise.
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