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inCAD Library

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  • Helpful application examples for mechanical engineers.

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No.000008 PC board fixture

Retention using eccentric cam

Spring Plunger

Product name Spring Plungers/Flat Nose
Model number PJLF10-10
* Orange colored cells in the table below indicate the part numbers that were actually used in this app. example.

Selection criteria

To buffer force that the cam applies on the work piece.

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Available sizes

■Spring Plunger Flat Tip Type

Body Pin Spring Allowable operation temperature
Material Surface treatment Material Surface treatment Hardness Material
EN 1.1191 Equiv. Black oxide EN 1.1191 Equiv. Trivalent Chromate 57 - 63HRC Spring Steel -30 ~ 80°C

■Sizes and Dimensions

Thread DIA.
(Coarse)
Stroke Pin O.D. Thread section length Body length
M5 3 Ø2 20 20
5 27 27
M6 3 Ø2.5 25 25
5 30 30
M8 3 Ø3.1 25 25
5 27 27
M10 5 Ø3.8 30 30
10 43
M12 10 Ø5.5 35 43

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Performance info.

■Load of spring plunger flat tip type (N)

Thread DIA.
(Coarse)
Stroke Min. load Max. load
M5 3 2 9.8
5 2 9.8
M6 3 5.9 9.8
5 2 9.8
M8 3 5.9 9.8
5 2.9 9.8
M10 5 5.9 14.7
10 2.9 14.7
M12 10 2.9 19.6

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Knurled Head Screw

Product name Long Knurled Head Screws/Configurable Thread Length
Model number LRLBF3-A35-L10-D10
* Orange colored cells in the table below indicate the part numbers that were actually used in this app. example.

Selection criteria

Suitable as a small lever.

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Available sizes

■Long Knurled Head Screws - Configurable Thread Length

Material Surface treatment
EN 1.7220 Equiv. Electroless nickel plating
EN 1.4305 Equiv. -

■Sizes and Dimensions

Under head shaft Knurled shaft
Thread DIA.
(Coarse)
Length
(Configure in 1mm increments)
O.D.
(Configure in 1mm increments)
Length
(Configure in 1mm increments)
M3 6 ~ 40 Ø5 ~ Ø10 10 ~ 60
M4 6 ~ 40 Ø5 ~ Ø10
M5 10 ~ 50 Ø10 ~ Ø25
M6 10 ~ 50 Ø10 ~ Ø25

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Shoulder Bolt

Product name Shoulder Bolts/Tolerance g6
Model number SGMSB5-20
* Orange colored cells in the table below indicate the part numbers that were actually used in this app. example.

Selection criteria

Used as rotation axis for lever mechanism.

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Available sizes

■Shoulder Bolt shaft DIA. tolerance g6

Material Hardness Strength class
EN 1.7220 Equiv. 33 ~ 38HRC 10.9
EN 1.4301 Equiv. - A2 - 50

■Sizes and Dimensions

Under head
Shaft DIA.
Under head shaft length Head Thread
10 15 20 25 30 35 40 45 50 55 60 O.D. Height Screw DIA. x Pitch Length
Ø4 Ø6.5 3 M2.5 x 0.45 5
Ø5 Ø8 3.5 M3 x 0.5 6
Ø6 Ø9 4 M4 x 0.7 7
Ø8 Ø13 6 M6 x 1.0 9
Ø10 Ø16 8 M8 x 1.25 12

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Accuracy Info

■Accuracy of Shoulder Bolt shaft DIA. tolerance g6

Shaft DIA.
External dims. Tolerance
Ø4 -0.004 / -0.012
Ø5
Ø6
Ø8 -0.005 / -0.014
Ø10

Shaft length tolerance: ±0.1

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IDEA NOTE Retention is stabilized with eccentric cam and linear guides

Operation is made easy with an eccentric cam, and linear guides stabilize motion and retention.

IDEA NOTE Spring plunger for retaining

Spring plungers load for retaining can be adjusted.

IDEA NOTE Retention is released only by the lever operation.

The lever angle and the stroke relationship is are presented in the graph below. The lever does not return by spring load.

  • TERMS AND CONDITIONS FOR USE OF CAD DATA
    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.
    1. CAD Data
    The Data is prepared for assisting the Company's users in the CAD design process by providing dimensions and other Product information. In order to provide the best speed and stability working within this site, the Product drawings were simplified to reduce the size of the Data. For instance, some of the Products are shown without the oil groove shape, screws or spring shape. Also, please be aware that the tolerance, surface roughness and/or chamfer of the Data may vary from the actual Products.
    2. Disclaimer on Data
    While the Company has carefully prepared the Data, accuracy of the Data is not guaranteed and is subject to the variances as described above. The Company may also modify, add or delete the Data at any time without prior notice. The Company assumes no liability for any direct, indirect, consequential or special damages that you may claim resulted from your use of the Data or any changes to or deletions of the Data regardless of the reason. The Company provides no warranty as to the quality, accuracy, functionality, safety or reliability of the combination of Products and parts. Example applications and combinations of the Products are provided for illustrative purposes only.
    3. Copyright
    Copyrights to the content and the Data belong to the Company or the manufacturers of the Products. The said copyright is protected by the Copyright Act and international treaties. The use (including duplication, modification, uploading, posting, transmission, distribution, licensing, sales and publishing) of the Data except for the purpose to use the Data described above without prior approval of the Company is not allowed. The Data cannot be used for any purposes (including sales promotion) except for designing your machine. If you violate this provision or the laws or regulations, the Company may prohibit you from the use of the Data, the Company’s site and/or take legal action. So long as you comply with these terms and conditions, the Company grants to you a non-exclusive, non-transferable, revocable license to access and use the Data for the sole purpose of assisting you in designing machines that incorporate products.
    4. Disclaimer of Warranty
    ANY AND ALL CONTENT APPEARING ON THIS WEB SITE IS PROVIDED FOR INFORMATIONAL PURPOSES ONLY. THIS WEB SITE, ITS CONTENT AND ITS LINKS ARE PROVIDED ON AN "AS IS" AND "AS AVAILABLE" BASIS AND ARE USED ONLY AT YOUR SOLE RISK, TO THE FULLEST EXTENT PERMISSIBLE BY LAW. THE COMPANY DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, OF ANY KIND, REGARDING THIS WEB SITE (INCLUDING ITS CONTENT, HARDWARE, SOFTWARE AND LINKS), INCLUDING AS TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, TITLE, NON INFRINGEMENT, RESULTS, ACCURACY, COMPLETENESS, ACCESSIBILITY, COMPATIBILITY, SECURITY AND FREEDOM FROM COMPUTER VIRUS. THE COMPANY WILL NOT BE LIABLE FOR ANY DAMAGES OR LOSSES, INCLUDING DIRECT, INDIRECT, CONSEQUENTIAL, SPECIAL, INCIDENTAL OR PUNITIVE DAMAGES AND/OR LOST PROFITS, IN CONNECTION WITH USE OF THE INTERNET, THIS WEB SITE, ITS CONTENT OR ITS LINKS
    Further, the Company will not be liable to you for any failure or delay by the Company to provide access to the Data or any of its obligations under these terms and conditions where such failure or delay is the direct or indirect result of any circumstances beyond the Company's reasonable control (and the Company's obligations will be suspended for the duration of such circumstances).
    5. Policy of Third Parties
    You may be required to separately agree to third party's policies if you use third party software to create or browse the Data or use a third party’s CAD data. In this case, the Company does not assume any responsibility for defects of such CAD data or the software of the third party or violation of their rights. Understand them before use.

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    Cautions on the CAD data

    1. 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.
    2. The CAD data unit assembly consists of sub-assemblies.
      Each sub-assembly unit can be used as it is or can be edited.
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    5. The Data including the third-part components are made by the Company.

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  • * Unit assembly CAD data consists of some sub-assemblies.
       Each sub-assembly unit can be used as it is or can be edited.

Application Overview

Purpose

  • Securely retain workpieces by applying load.
  • To release workpiece release the lever.

Points for use

  • Manual mechanism by lever operation.
  • The pushing block is pressed by springs in the opposite direction of retention in order to prevent the eccentric cam from coming off the block.

Target workpiece

  • Printed circuit board
    Dims.: W158 x D19 x t1.6mm

Design Specifications

Operating Conditions or Design Requirements

  • Lever rotation angle: 90°
  • Spring plunger load (1pc.): 2.9 ~ 14.7N
  • External dims.: W170 x D100 x H32mm

Required Performance

  • Workpiece retention load: 8.16N

Selection Criteria for Main Components

  • Spring
    • For light load application select low spring constant.
  • Linear guide
    • Since moment loads are not large, select a linear guide suitable for the size of the fixture.
  • Spring plunger
    • To ensure pressing against workpiece, flat tip type is selected.
    • Provides just enough retention force not to damage the workpiece.

Design Evaluation

Verification of main components

  • Verify if the workpiece can be retained, and operation load of the eccentric cam is adequate.
  •  Spring load
    • Calculation formula: Reaction force F = kx
    • Assumed load: F = 1.74N
    • Assumed deflection when compressed: x = 6mm
    • Spring constant: k = F / x = 1.74 / 6 = 0.29N/mm selected
  • Plunger load
    • Assumed workpiece retention load: 8.16N
      (Plunger 1mm deflection, 2pcs.)
  • Assumed lever operation load
    • 1.74N + 8.16N = 9.9N

Other Design Consideration

  • Linear guides are adopted in order to stabilize the horizontal movements of the pusher mechanism.
  • Spring plungers are adopted for holding load adjustments for the retention mechanism.

Explore Similar Application Examples

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Part List

No. Part Name Sample picture MISUMI Part Number
For Price and Days to ship click on Part No.
Quantity
1 Linear Guides SSEB6-55 2
2 Spring Plungers PJLF10-10 2
3 Long Knurled Head Screws LRLBF3-A35-L10-D10 1
4 Shoulder Bolts SGMSB5-20 1
5 Oil Free Bushings JZF5-6 1
6 Space Collar SMKB6-8 1
7 Compression Springs UR6-15 1
8 Dowel Pins MSC3-8 4
9 Locating Pins SJPBPB3-4 3
  • The part list above contains only MISUMI parts.
    The list of parts and machined products of other manufacturers than MISUMI can also be downloaded by part list download (CSV).
  • You will find information on price and shipping days, in the Online Quote and Order System.
  • TERMS AND CONDITIONS FOR USE OF CAD DATA
    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.
    1. CAD Data
    The Data is prepared for assisting the Company's users in the CAD design process by providing dimensions and other Product information. In order to provide the best speed and stability working within this site, the Product drawings were simplified to reduce the size of the Data. For instance, some of the Products are shown without the oil groove shape, screws or spring shape. Also, please be aware that the tolerance, surface roughness and/or chamfer of the Data may vary from the actual Products.
    2. Disclaimer on Data
    While the Company has carefully prepared the Data, accuracy of the Data is not guaranteed and is subject to the variances as described above. The Company may also modify, add or delete the Data at any time without prior notice. The Company assumes no liability for any direct, indirect, consequential or special damages that you may claim resulted from your use of the Data or any changes to or deletions of the Data regardless of the reason. The Company provides no warranty as to the quality, accuracy, functionality, safety or reliability of the combination of Products and parts. Example applications and combinations of the Products are provided for illustrative purposes only.
    3. Copyright
    Copyrights to the content and the Data belong to the Company or the manufacturers of the Products. The said copyright is protected by the Copyright Act and international treaties. The use (including duplication, modification, uploading, posting, transmission, distribution, licensing, sales and publishing) of the Data except for the purpose to use the Data described above without prior approval of the Company is not allowed. The Data cannot be used for any purposes (including sales promotion) except for designing your machine. If you violate this provision or the laws or regulations, the Company may prohibit you from the use of the Data, the Company’s site and/or take legal action. So long as you comply with these terms and conditions, the Company grants to you a non-exclusive, non-transferable, revocable license to access and use the Data for the sole purpose of assisting you in designing machines that incorporate products.
    4. Disclaimer of Warranty
    ANY AND ALL CONTENT APPEARING ON THIS WEB SITE IS PROVIDED FOR INFORMATIONAL PURPOSES ONLY. THIS WEB SITE, ITS CONTENT AND ITS LINKS ARE PROVIDED ON AN "AS IS" AND "AS AVAILABLE" BASIS AND ARE USED ONLY AT YOUR SOLE RISK, TO THE FULLEST EXTENT PERMISSIBLE BY LAW. THE COMPANY DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, OF ANY KIND, REGARDING THIS WEB SITE (INCLUDING ITS CONTENT, HARDWARE, SOFTWARE AND LINKS), INCLUDING AS TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, TITLE, NON INFRINGEMENT, RESULTS, ACCURACY, COMPLETENESS, ACCESSIBILITY, COMPATIBILITY, SECURITY AND FREEDOM FROM COMPUTER VIRUS. THE COMPANY WILL NOT BE LIABLE FOR ANY DAMAGES OR LOSSES, INCLUDING DIRECT, INDIRECT, CONSEQUENTIAL, SPECIAL, INCIDENTAL OR PUNITIVE DAMAGES AND/OR LOST PROFITS, IN CONNECTION WITH USE OF THE INTERNET, THIS WEB SITE, ITS CONTENT OR ITS LINKS
    Further, the Company will not be liable to you for any failure or delay by the Company to provide access to the Data or any of its obligations under these terms and conditions where such failure or delay is the direct or indirect result of any circumstances beyond the Company's reasonable control (and the Company's obligations will be suspended for the duration of such circumstances).
    5. Policy of Third Parties
    You may be required to separately agree to third party's policies if you use third party software to create or browse the Data or use a third party’s CAD data. In this case, the Company does not assume any responsibility for defects of such CAD data or the software of the third party or violation of their rights. Understand them before use.

    CAD Data Download (Unit Assembly)

    CAD Data Download: File Format
    生成

    Thank you for downloading the data.

    Click the Good IDEA! button when this application example is helpful.


    This data is utilized in order to list more useful application examples in the future.

    Cautions on the CAD data

    1. 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.
    2. The CAD data unit assembly consists of sub-assemblies.
      Each sub-assembly unit can be used as it is or can be edited.
    3. * The part in the frame is a sub-assembly unit.

    4. The Data for fabricated parts is based on easy-to-edit dimensions and shapes in sketches and histories.
    5. The Data including the third-part components are made by the Company.

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