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- inCAD Library Home
- > No.000265 Simplified Clamping Jig
No.000265 Simplified Clamping Jig
Spring loaded jig for manual operation.
Relevant category
O-Ring
| Product name | O-Rings - S Series |
|---|---|
| Part number | NSA6 |
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria
Effective centering tool used at insertion
Available sizes
■O-Rings - S Series
| Material | Hardness (JIS Hs) | Color | Operable Temperature Range | Usage |
|---|---|---|---|---|
| Nitrile Rubber | 70±5 | Black | -30～100℃ | Mineral Oil Resistant |
| 90±5 | Black | -25～100℃ | ||
| Silicon Rubber | 50±5 | Milky White | -50～200℃ | Heat Resistant |
| 70±5 | Navy | |||
| Fluororubber | 70±5 | Black | -15～200℃ | |
| 90±5 | Black |
■Sizes and Dimensions (excerpt)
| JIS Nominal Number | Ring I.D. | Ring Wire Dia. | Mating Side Dia. Fixing Method | |
|---|---|---|---|---|
| External Pressure | Internal Pressure | |||
| 3 | φ2.5 | φ1.5 | φ3 | φ5 |
| 4 | φ3.5 | φ4 | φ6 | |
| 5 | φ4.5 | φ5 | φ7 | |
| 6 | φ5.5 | φ6 | φ8 | |
| 7 | φ6.5 | φ7 | φ9 | |
| 8 | φ7.5 | φ8 | φ10 | |
| 9 | φ8.5 | φ9 | φ11 | |
| 10 | φ9.5 | φ10 | φ12 | |
| 11.2 | φ10.7 | φ11.2 | φ13.2 | |
| 12 | φ11.5 | φ12 | φ14 | |
| 12.5 | φ12 | φ12.5 | φ14.5 | |
| 14 | φ13.5 | φ14 | φ16 | |
| 15 | φ14.5 | φ15 | φ17 | |
| 16 | φ15.5 | φ16 | φ18 | |
| 18 | φ17.5 | φ18 | φ20 | |
| 20 | φ19.5 | φ20 | φ22 | |
| 22 | φ21.5 | φ22 | φ24 | |
| 22.4 | φ21.9 | φ2.0 | φ22.4 | φ25.4 |
| 24 | φ23.5 | φ24 | φ27 | |
| 25 | φ24.5 | φ25 | φ28 | |
| 26 | φ25.5 | φ26 | φ29 | |
| 28 | φ27.5 | φ28 | φ31 | |
| 29 | φ28.5 | φ29 | φ32 | |
| 30 | φ29.5 | φ30 | φ33 | |
| 31.5 | φ31 | φ31.5 | φ34.5 | |
| 32 | φ31.5 | φ32 | φ35 | |
| 34 | φ33.5 | φ34 | φ37 | |
| 35 | φ34.5 | φ35 | φ38 | |
* Please see the product pages for other diameter rings
Accuracy Info
■Accuracy of the O-ring S series
Ring Wire DIA. Tolerance:
| Wire Dia. | Tolerance |
|---|---|
| φ1.5 | ±0.1 |
| φ2.0 |
Parting Surface Burr Height: 0.1 or less
Parting Surface Burr Width: 0.15 or less
Ring I.D. Tolerance;
| JIS Nominal Number | Ring I.D. | Tolerance | ||
|---|---|---|---|---|
| Nitrile | Silicone | Fluorine | ||
| 3～40 | 5～φ39.5 | ±0.15 | ±0.45 | ±0.30 |
| 42～50 | φ41.5～ | ±0.25 | ±0.75 | ±0.50 |
IDEA NOTE Simplified positioning insertion jig
An O-ring is roughly inserted in the inner guide and then inserted in the assembly counterpart by slightly shrinking its outer shape with the outer guide.
(1) Roughly insert the workpiece (O-ring) in part 201 as a guide.
(2) Set the workpiece (O-ring) at the end of part 202.
(3) Fit part 203 onto the jig and set the jig in the insertion position.
(4) Press part 205 to insert the workpiece.
Tip enlarged view in (3)
Tip enlarged view in (4)
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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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Your access to the CAD data that MISUMI Corporation (hereinafter referred to as the Company) posts on this site (including 3D CAD data, intermediate 3D CAD data and 2D CAD data; hereinafter referred to as the Data) are of products manufactured and/or sold by the Company (hereinafter referred to as the Products) assumes that you have read and accepted these terms and conditions which govern your use of the Data. If you do not agree to these terms and conditions, you must stop using this website and the Data. You must not use the Data for any unlawful purpose or in any manner inconsistent with these terms and conditions.
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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
- The device in this application example consists of the insertion jig body (right side of figure) and the stand (left side of figure).
- O-ring setting
With the outermost sleeve of the jig body removed, set up the jig body in an opposite orientation to that shown in the figure on the left in the stand. The pin in the center has a dual structure. Set the workpiece (O-ring) on the inner pin and fit the removed outer sleeve back on. - Insertion positioning
Orient the center pin fit with the O-ring downward (state shown in the figure on the left) and butt the jig against the insertion position of the assembly counterpart (green). Also butt the end of the outer sleeve against the assembly counterpart. - Insertion of O-ring
When the cylindrical part shown at the center in the figure on the left is pressed with the hand, the outer part of the dual structure pin at the center slides and pushes the O-ring out. In the jig, a cylindrical nut is located below the cylindrical part and the push stroke is adjusted according to the nut position. When the hand is released, the cylindrical part at the center returns to the original position due to the reaction force of the compression spring that is installed between the pin parts in the dual structure.
Points for use
- Manual Operation
Applied to a portion where it is not possible to accurately incorporate an O-ring using your hands.
Target workpiece
- Shape: O-ring (rubber)
- Size: inner diameter φ3 x t0.5mm
Design Specifications
Operating Conditions or Design Requirements
- Insertion stroke: 7mm
- Outer dimensions: φ20 x H42mm
Required Performance
- Positioning accuracy: ±0.2mm
- Assumed load: 0.75N
Selection Criteria for Main Components
- The O-ring insertion guide is made of MC nylon.
- The insertion pin is made of 304 Stainless Steel and precisely finished.
Design Evaluation
Verification of main components
- Confirmation of load of used spring
- Weight of parts to be returned: M = 14g
Friction coefficient between O-ring and pusher pin: f1 = 40g
Friction coefficient between inner guide and pusher pin: f2 = 10g
Required spring load: F
=M+f1+f2
=14+40+10
=65g
Spring constant: K = 10g/mm
Free length: 20mm
Set length: 8.2mm
Spring set load: P = 10 x (20 - 8.2)
= 10 x 11.8
≒120g
Therefore, P > F.
- Weight of parts to be returned: M = 14g
Other Design Consideration
- The dimensions of the jig part are determined by knowing the accuracy of the product using the O-ring.
- Friction is reduced at the O-ring insertion guide.
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