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inCAD Library

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No.000013 Long Workpiece Holding Fixture
Good IDEA!
31

Magnetic and physical workpiece clamp.

Relevant category

Magnet

Magnet
Product name Magnets - Cylindrical
Part number HXNN8-8
Features Neodymium Magnet and Samarium-Cobalt Magnet characterized by their strong magnetic force.
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria | Available sizes | Performance info.

Selection criteria

Suitable for temporary retention of workpiece.

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Available sizes

■Magnets - Cylindrical

Material Surface treatment Heat resistant temperature
High Force Neodymium Magnet nickel plating 60℃
Neodymium Magnet 80℃
Heat resistant Neodymium Magnet 150℃
Cobalt magnet 200℃

■Sizes

DIA. Length High Force Neodymium Neodymium Heat resistant Neodymium Cobalt
φ1 2 ○ ○ ○ ○
3 − ○ ○ ○
5 ○ ○ ○ ○
φ2 2 ○ ○ ○ ○
3 ○ ○ ○ ○
4 ○ ○ − −
5 ○ ○ ○ ○
φ3 1 ○ ○ − −
2 ○ ○ ○ ○
3 ○ ○ ○ ○
4 ○ ○ ○ ○
5 ○ ○ ○ ○
6 ○ ○ ○ −
φ4 1 − ○ − −
2 ○ ○ ○ ○
3 ○ ○ ○ ○
4 ○ ○ ○ ○
5 ○ ○ ○ ○
8 ○ ○ ○ −
10 ○ ○ ○ −
φ5 1 − ○ − −
2 ○ ○ ○ ○
3 ○ ○ ○ ○
4 ○ ○ ○ ○
5 ○ ○ ○ ○
6 ○ ○ ○ ○
8 ○ ○ − −
10 ○ ○ ○ −
φ6 2 ○ ○ ○ ○
3 ○ ○ ○ ○
4 ○ ○ ○ ○
5 − ○ ○ ○
6 ○ ○ ○ ○
8 ○ ○ ○ −
10 ○ ○ − −
φ8 2 − ○ ○ ○
3 ○ ○ ○ ○
5 ○ ○ ○ ○
6 ○ ○ − −
8 ○ ○ ○ ○
10 ○ ○ − −
φ10 2 − ○ ○ ○
3 ○ ○ ○ ○
5 ○ ○ ○ ○
8 − ○ ○ ○
10 ○ ○ ○ ○
φ12 2 − ○ ○ ○
3 − ○ ○ ○
5 − ○ ○ ○
8 − ○ ○ ○
10 − ○ ○ ○
φ15 2 − ○ ○ ○
3 − ○ ○ ○
5 − ○ ○ ○
8 − ○ ○ ○
10 − ○ ○ ○
φ20 3 − ○ − −
10 − ○ − −

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Performance info.

■Attraction force and surface magnetic flux density of Cylindrical magnet

DIA. Length Attraction force(N) Surface magnetic flux density (Gauss G)
High Force Neodymium Neodymium Cobalt High Force Neodymium Neodymium Cobalt
Heat resistant Neodymium Heat resistant Neodymium
φ1 2 0.08 0.06 0.04 1900〜2100 1100〜1300 900〜1100
3 − 0.07 0.05 − 1200〜1400 1000〜1200
5 0.1 0.08 0.06 2100〜2300 1300〜1500 1100〜1300
φ2 2 0.77 0.59 0.39 3500〜3700 2400〜2600 2000〜2200
3 0.9 0.69 0.49 3700〜3900 3100〜3300 2600〜2800
4 0.93 0.72 − 3700〜3900 3400〜3600 −
5 1.01 0.78 0.49 4100〜4300 3100〜3300 2600〜2800
φ3 1 1.39 1.07 − 2700〜2900 2000〜2400 −
2 2.04 1.57 1.08 3700〜4000 3100〜3300 2600〜2800
3 2.55 1.96 1.37 4200〜4500 3300〜3500 2800〜3000
4 2.93 2.25 1.47 4400〜4700 3400〜3600 2900〜3100
5 3.06 2.35 1.57 4500〜4800 3500〜3700 2900〜3100
6 3.6 2.82 − 4600〜4800 4100〜4300 −
φ4 1 − 1.47 − − 2000〜2200 −
2 3.69 2.84 1.86 4100〜4300 3100〜3300 2600〜2800
3 4.97 3.82 2.55 4200〜4500 3600〜3800 3100〜3300
4 5.6 4.31 2.94 4500〜4800 3800〜4000 3200〜3400
5 6.11 4.7 3.14 4800〜5100 4000〜4200 3400〜3600
8 8.5 6.82 − 5100〜5400 4500〜4700 −
10 9.04 6.96 − 5200〜5500 4500〜4700 −
φ5 1 − 1.45 − − 1800〜2000 −
2 5.1 3.92 2.65 3500〜3700 3000〜3200 2500〜2700
3 7.51 5.78 3.82 4200〜4500 3800〜4000 3200〜3400
4 8.92 6.86 4.61 4600〜4900 4000〜4200 3400〜3600
5 9.93 7.64 5.1 4900〜5100 4300〜4500 3600〜3800
6 10.57 8.13 5.39 5100〜5400 4300〜4500 3600〜3800
8 11.64 8.96 − 5200〜5500 4700〜4900 −
10 12.74 9.8 − 5400〜5700 4800〜5000 −
φ6 2 6.5 5 3.33 3100〜3400 2900〜3100 2400〜2600
3 9.93 7.64 5.1 4000〜4300 3700〜3900 3100〜3300
4 12.48 9.6 6.47 4600〜4900 3900〜4100 3300〜3500
5 − 10.88 7.25 − 4300〜4500 3600〜3800
6 15.29 11.76 7.84 5100〜5400 4400〜4600 3700〜3900
8 15.34 11.8 − 5400〜5600 4700〜4900 −
10 15.39 11.84 − 5500〜5800 4800〜5000 −
φ8 2 − 6.66 4.41 − 2400〜2600 2000〜2200
3 14.01 10.78 7.45 3500〜3800 3200〜3400 2700〜2900
5 23.31 17.93 11.96 4700〜5000 4200〜4400 3500〜3700
6 26.76 20.59 − 5100〜5400 4700〜4900 −
8 29.94 23.03 15.39 5400〜5700 4600〜4800 3900〜4100
10 31.23 24.02 − 5600〜5900 5000〜5200 −
φ10 2 − 7.84 5.29 − 2000〜2200 1700〜1900
3 18.34 14.11 9.41 3100〜3400 2800〜3000 2400〜2600
5 32.23 24.79 16.56 4300〜4600 3800〜4000 3200〜3400
8 − 34.3 23.03 − 4700〜4900 4000〜4200
10 49.43 38.02 25.48 5500〜5800 4900〜5100 4100〜4300
φ12 2 − 9.02 5.98 − 1600〜1800 1300〜1500
3 − 16.46 11.07 − 2500〜2700 2100〜2300
5 − 31.16 20.87 − 3600〜3800 3000〜3200
8 − 46.55 31.07 − 4500〜4700 3800〜4000
10 − 52.72 35.28 − 4800〜5000 4000〜4200
φ15 2 − 10.58 7.06 − 1400〜1600 1100〜1300
3 − 19.6 13.13 − 2300〜2500 1900〜2100
5 − 39.59 26.46 − 3100〜3300 2600〜2800
8 − 64.39 43.02 − 4200〜4400 3500〜3700
10 − 75.85 50.67 − 4600〜4800 3800〜4000
φ20 3 − 34.32 − − 1700〜1900 −
10 − 98.06 − − 4200〜4400 −

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IDEA NOTE Workpiece is attracted by a magnet

Magnet position can be adjusted to change the holding force of the workpiece.

IDEA NOTE Clips with torsional springs are used to fix the workpiece.

To compensate for different length objects, the number of clips used can be adjusted.

  • 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.
    In case that the CAD data is found to have been to be used for any purpose other than mentioned above or against the related laws, MISUMI may take legal actions, including the one for blocking the involved user from using CAD data and from accessing to the MISUMI site.
    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).

    CAD Download (Unit Assembly)

    CAD Download: File Format
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    Thank you for downloading the data.

    Click the Good IDEA! button when you find interesting design tips.


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

    Good IDEA!

    CAD Data Limitations

    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. 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.

      3. * The part in the frame is a sub-assembly unit.

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

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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

  • Clamping mechanism which utilizes magnets as well as clips.
  • Each clamp is separated allowing multiple points of contact.

Points for use

  • The magnet locates the workpiece, and the clips hold it in place.

Target workpiece

  • Long magnetic objects.
    Dims: W50 x D150 x H30, t3

Design Specifications

Operating Conditions or Design Requirements

  • External dims.: W300 x D60 x H86

Required Performance

  • Spring load: 10.23N (Unclamped)
    8.26N(Workpiece clamped)

Selection Criteria for Main Components

  • Clamps
    • Spring with low constant is selected in order to reduce the operation efforts.

      Spring constant is determined by = Longitudinal elastic modulus × wire diameter ^ 4 ÷ 64 ÷ Coil center DIA. ÷ Effective number of turns.

  • Magnet
    • Select a magnet with attraction force appropriate for the application.
    • For this example, springs with constant : 2.44N・mm/deg. is selected.

      Spring constant is determined by = Longitudinal elastic modulus × wire diameter ^ 4 ÷ 64 ÷ Coil center DIA. ÷ Effective number of turns.

Design Evaluation

Verification of main components

  • Select a spring appropriate for the application.
  •  Spring load
    • Calculation formula: Reaction force F = k x θ / l
      Spring constant (k): 2.44 mm/deg
      Max. operational angle (θ): 78
      Load point distance from the coil center (I): 18.6mm
  • Clamp released
    • Spring. operational angle (θ): 78°
      F = 2.44 × 78 / 18.6 = 10.23 N
  • Workpiece clamp
    • Spring. operational angle (θ): 63°
      F = 2.44 × 63 / 18.6 = 8.26 N

Other Design Consideration

  • Magnetic attraction force can be adjusted by magnet size and position.
  • Select a torsional spring that makes the clip easily operational.

    Spring constant is determined by = Longitudinal elastic modulus × wire diameter ^ 4 ÷ 64 ÷ Coil center DIA. ÷ Effective number of turns.

  • Provide a magnet block and fixing pins on the right hand side to accommodate different workpieces.

Explore Similar Application Examples

Page - / -

Part List

No. Part Name Sample Picture MISUMI Part Number
(click the Part Number below for details) 		Quantity
1 Pivot Pins - Straight Retaining Ring SCDG4-22 3
2 Magnets/Cylindrical HXNN8-8 1
3 Long Knurled Head Screws/Configurable Thread Length LRLBS3-A20-L24 1
4 Resin Sheets/Fluororesin Tapes (Sliding, Dust-proof) PTFETT0.23-20 1
5 One End Chamfered/One End Radiused/h7 Tolerance MSH3-8 4
6 Hex Socket Set Screws - Soft Tips SBPPS4-6 1
  • The part list above only contains MISUMI parts.
    Part list download (CSV) includes MISUMI and third party components used in this example.
  • 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.
    In case that the CAD data is found to have been to be used for any purpose other than mentioned above or against the related laws, MISUMI may take legal actions, including the one for blocking the involved user from using CAD data and from accessing to the MISUMI site.
    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).

    CAD Download (Unit Assembly)

    CAD Download: File Format
    生成

    Thank you for downloading the data.

    Click the Good IDEA! button when you find interesting design tips.


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

    Good IDEA!

    CAD Data Limitations

    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. 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.

      3. * The part in the frame is a sub-assembly unit.

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

    Page top

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