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inCAD Library

Please read before use

What is inCAD Library?

  • Helpful application examples for mechanical engineers.

The Concept of inCAD Library

  • Online application library with a range of ideas for all manufacturing industries.
  • Save design time and learn new design applications when you are concepting new machines.

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  • MISUMI may not offer all parts in each application design. Available parts can only be purchased separately not as a unit shown in each application design.
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inCAD Library Features

  1. Get great new design ideas for these application examples.

    2. Over 300 design application ideas
    collected from dozens of industries!

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No.000259 Nonmagnetic Cylindrical Workpiece Detection
Good IDEA!
1

Presence detection using a proximity sensor

Relevant category

Round Wire Coil Spring

Round Wire Coil Spring
Product name Round Wire Coil Springs -WR(60% Deflection)-
Part number WR10-55
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria | Available sizes | Performance info. | Technical calculations

Selection criteria

Select the optimum product by considering the workpiece weight and size.

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Available sizes

■Round Wire Coil Springs -WR(60% Deflection)-

Material:Spring Steel (ASTM A228)

■Sizes and Dimensions

Winding Dia.
（mm） 		Free Length
（mm） 		Load N
（kgf）
8 10 1.8(0.18)
15 2.6(0.27)
20 3.5(0.36)
25 4.4(0.45)
30 5.3(0.54)
35 6.2(0.63)
40 7.1(0.72)
45 7.9(0.81)
50 8.8(0.9)
55 9.7(0.99)
60 10.6(1.08)
65 11.5(1.17)
70 12.4(1.26)
80 14.1(1.4)
10 10 1.8（0.18）
15 2.6（0.27）
20 3.5（0.36）
25 4.4（0.45）
30 5.3（0.54）
35 6.2(0.63)
40 7.1(0.72)
45 7.9(0.81)
50 8.8(0.9)
55 9.7(0.99)
60 10.6(1.08)
65 11.5(1.17)
70 12.4(1.26)
80 14.1(1.4)
12 10 1.8(0.18
15 2.6(0.27)
20 3.5(0.36)
25 4.4(0.45)
30 5.3(0.54)
35 6.2(0.63)
40 7.1(0.72)
45 7.9(0.81)
50 8.8(0.9)
55 9.7(0.99)
60 10.6(1.08)
65 11.5(1.17)
70 12.4(1.26)
80 14.1(1.4)

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Performance info.

■Speeds / Loads (Load Information) of Round Wire Coil Spring (60% deflection)

Load N (kgf)
min. max.
0.9(0.09) 23.5(2.4)

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Technical calculations

■Load = Spring Constant x Amount of Deflection

Load = Spring constant x Deflection

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IDEA NOTE Detection of a nonmagnetic substance with a proximity sensor

When the contactor is touching a workpiece the spring is compressed and the opposite side is detected with a proximity sensor.

  • Terms of Use for CAD Data and Simplified Drawing Data
    These terms and conditions (hereinafter referred to as “the Terms") set forth the conditions for downloading CAD data and simplified drawing data posted on https://mx.misumi-ec.com/ (hereinafter referred to as the "Website") operated by MISUMI MÉXICO, S. DE R.L. DE C.V. (hereinafter referred to as "MISUMI"). By downloading CAD data and simplified drawing data posted on the Website (hereafter referred to as “Data”), customers are deemed to have agreed to these Terms.

    1. Purpose of Use
    MISUMI offers the following:
    1) CAD data found on the Website (3D CAD data, 3D Intermediate data and 2D CAD data) for the purpose of informing customers of the characteristics of the products offered by MISUMI or a manufacturer affiliated with MISUMI for use in their designs.
    2) Simplified drawing data (in PDF format) for the purpose of checking the specifications of products.
    2. Characteristics of Data
    There may be a discrepancy in certain characteristics of products (for example: tolerance, surface roughness, chamfer, etc.) between the Data and the actual product. Furthermore, for the purpose of reducing the file size of the Data, some information such as oil groove shapes, threads, or spring shapes, may be removed from the Data.
    3. Disclaimer
    MISUMI carefully creates the Data but makes no warranty as to the accuracy of the Data. MISUMI may at any time, and with no prior notice to customers, revise or delete Data. MISUMI assumes no responsibility for any damage or loss resulting from any revision or deletion of the Data, or any errors in said data. Customers are solely responsible for all aspects of their own designs, including those made using MISUMI’s CAD data. MISUMI may provide customers with design example data on the Website, but the quality, accuracy, functionality, safety, reliability, etc., of such data are not guaranteed. MISUMI may, at any time, and in its sole discretion, request that the customer cease its use of or destroy the Data in its possession. MISUMI may request the customer provide MISUMI documentation of such destruction.
    4. Prohibited Acts
    Customers or users of the Data, are prohibited from the following acts regarding the Data, in whole or in part:
    (1) Requesting quotations or placing orders for products with third parties other than those authorized by MISUMI or its affiliates;
    (2) Receiving quotations or orders for products from third parties by providing the Data to a third party or using the Data in their own business;
    (3) Displaying links to the Website related to the Data on their own websites, etc., without MISUMI's consent;
    (4) Using or reproducing the Data beyond the scope of the above-stated Purpose of Use;
    (5) Modifying, altering, tampering with, translating, or adapting the Data;
    (6) Selling, transferring, lending, sublicensing, or providing the Data to third parties in any way without MISUMI’s consent;
    (7) Altering the content, reverse engineering, decompiling, disassembling, or analyzing the Data;
    (8) Publicly disclosing or exhibiting the Data without MISUMI's consent;
    (9)　Using the Data for the purpose of providing products and services identical or similar to those of MISUMI;
    (10)　Performing acts that interfere with the proper functioning of this Website, such as acquiring Data in bulk.
    5. Copyright
    All title and copyright in and to any information contained in the Data are owned by MISUMI or the relevant manufacturer affiliated with MISUMI and are protected by applicable copyright laws and international treaties. By downloading Data, the customer acquires no ownership rights of any kind in the intellectual property contained within. Without prior approval from MISUMI, no part of the Data may be utilized (reproduced, modified, reverse-engineered, uploaded, presented, sent, distributed, licensed, sold, or published) for any purpose other than that mentioned above.
    In the event Data is found to have been to be used for any purpose other than that mentioned above or against any applicable laws, MISUMI may pursue any legal remedy available to it, which may result in forbidding the offending user from using the Data or accessing the Website.
    6. Third-Party Data
    MISUMI offers some Data provided by third parties. Such Data may be subject to separate terms and conditions, in addition to these terms. MISUMI makes no guarantee or warranty regarding Data from third parties.
    7.Export Control
    Customers shall comply with all applicable laws and regulations regarding the export of the Data.
    8. Amendments to the Terms
    MISUMI may, at any time, and in its sole discretion, modify these terms and conditions; any such modification will be effective immediately.
    9. Severability
    If any term or provision of these Terms is invalid, illegal, or unenforceable in any jurisdiction, such invalidity, illegality, or unenforceability shall not affect any other term or provision of these Terms or invalidate or render unenforceable such term or provision in any other jurisdiction.
    10. Miscellaneous
    These Terms and any disputes arising in connection therewith shall be exclusively governed by and construed in accordance with the laws of the United Mexican States, without regard to its conflicts of law principles. The state and federal courts located in Queretaro, Mexico shall have exclusive jurisdiction to adjudicate any dispute arising in connection with these Terms. By downloading the Data, you agree to submit to the exclusive and personal jurisdiction of the state and federal courts located in Queretaro, Mexico.

    Revised: 27/10/2025

    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.

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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

  • A proximity sensor is used to detect nonmagnetic cylindrical work pieces across a V-shaped staging table.
  • A robot places a cylindrical object on the staging table, where it is detected. After confirmation of the piece, the process is continued by hand. If no confirmation signal is received the robot conveys the next work piece.

Target workpiece

  • Cylinder
  • Material: Aluminum
  • External dimensions: φ 100 x 100 mm
  • Mass: 2.1 kg

Design Specifications

Operating Conditions or Design Requirements

  • External dimensions: W 42 ｘ D 22 ｘ H 130 mm

Required Performance

  • Positioning accuracy: 1 mm unit

Selection Criteria for Main Components

  • Spring
    • Select a level of spring force that does not lift up the workpiece.

Design Evaluation

Verification of main components

  • Verify the spring constant for appropriateness to the presence of the workpiece.
  • Spring
    • Workpiece weight: 2.1 kg x 9.8 = 20.58 N
    • Spring constant: Select 0.3 N/mm.
    • Spring bending at workpiece existence: 22.75 mm (initial bending 4.8 mm + displacement 17.95 mm)
    • Spring force at workpiece presence = 0.3 N/mm x 22.75 mm ＝ 6.8 N
      ⇒ 20.58 N > 6.8 N Thus, the workpiece is not lifted up.

Other Design Consideration

  • By using flat washers at the bottom of the spring, the spring force can be adjusted by the number of flat washers used.
  • Urethane is used for the contactor to prevent scratches on workpieces.

Explore Similar Application Examples

Page - / -

Part List

No. Part Name Sample Picture MISUMI Part Number
For Price and Days to ship click on Part No. 		Quantity
1 Compression Springs WR10-55 1
2 Proximity Switches EM2-8S 1
3 Metal Washers WSSM10-6-1 3
4 Countersunk Screws BFBJ3-8 1
  • The part list above only contains MISUMI parts.
    Part list download (CSV) includes MISUMI and third party components used in this example.
  • Terms of Use for CAD Data and Simplified Drawing Data
    These terms and conditions (hereinafter referred to as “the Terms") set forth the conditions for downloading CAD data and simplified drawing data posted on https://mx.misumi-ec.com/ (hereinafter referred to as the "Website") operated by MISUMI MÉXICO, S. DE R.L. DE C.V. (hereinafter referred to as "MISUMI"). By downloading CAD data and simplified drawing data posted on the Website (hereafter referred to as “Data”), customers are deemed to have agreed to these Terms.

    1. Purpose of Use
    MISUMI offers the following:
    1) CAD data found on the Website (3D CAD data, 3D Intermediate data and 2D CAD data) for the purpose of informing customers of the characteristics of the products offered by MISUMI or a manufacturer affiliated with MISUMI for use in their designs.
    2) Simplified drawing data (in PDF format) for the purpose of checking the specifications of products.
    2. Characteristics of Data
    There may be a discrepancy in certain characteristics of products (for example: tolerance, surface roughness, chamfer, etc.) between the Data and the actual product. Furthermore, for the purpose of reducing the file size of the Data, some information such as oil groove shapes, threads, or spring shapes, may be removed from the Data.
    3. Disclaimer
    MISUMI carefully creates the Data but makes no warranty as to the accuracy of the Data. MISUMI may at any time, and with no prior notice to customers, revise or delete Data. MISUMI assumes no responsibility for any damage or loss resulting from any revision or deletion of the Data, or any errors in said data. Customers are solely responsible for all aspects of their own designs, including those made using MISUMI’s CAD data. MISUMI may provide customers with design example data on the Website, but the quality, accuracy, functionality, safety, reliability, etc., of such data are not guaranteed. MISUMI may, at any time, and in its sole discretion, request that the customer cease its use of or destroy the Data in its possession. MISUMI may request the customer provide MISUMI documentation of such destruction.
    4. Prohibited Acts
    Customers or users of the Data, are prohibited from the following acts regarding the Data, in whole or in part:
    (1) Requesting quotations or placing orders for products with third parties other than those authorized by MISUMI or its affiliates;
    (2) Receiving quotations or orders for products from third parties by providing the Data to a third party or using the Data in their own business;
    (3) Displaying links to the Website related to the Data on their own websites, etc., without MISUMI's consent;
    (4) Using or reproducing the Data beyond the scope of the above-stated Purpose of Use;
    (5) Modifying, altering, tampering with, translating, or adapting the Data;
    (6) Selling, transferring, lending, sublicensing, or providing the Data to third parties in any way without MISUMI’s consent;
    (7) Altering the content, reverse engineering, decompiling, disassembling, or analyzing the Data;
    (8) Publicly disclosing or exhibiting the Data without MISUMI's consent;
    (9)　Using the Data for the purpose of providing products and services identical or similar to those of MISUMI;
    (10)　Performing acts that interfere with the proper functioning of this Website, such as acquiring Data in bulk.
    5. Copyright
    All title and copyright in and to any information contained in the Data are owned by MISUMI or the relevant manufacturer affiliated with MISUMI and are protected by applicable copyright laws and international treaties. By downloading Data, the customer acquires no ownership rights of any kind in the intellectual property contained within. Without prior approval from MISUMI, no part of the Data may be utilized (reproduced, modified, reverse-engineered, uploaded, presented, sent, distributed, licensed, sold, or published) for any purpose other than that mentioned above.
    In the event Data is found to have been to be used for any purpose other than that mentioned above or against any applicable laws, MISUMI may pursue any legal remedy available to it, which may result in forbidding the offending user from using the Data or accessing the Website.
    6. Third-Party Data
    MISUMI offers some Data provided by third parties. Such Data may be subject to separate terms and conditions, in addition to these terms. MISUMI makes no guarantee or warranty regarding Data from third parties.
    7.Export Control
    Customers shall comply with all applicable laws and regulations regarding the export of the Data.
    8. Amendments to the Terms
    MISUMI may, at any time, and in its sole discretion, modify these terms and conditions; any such modification will be effective immediately.
    9. Severability
    If any term or provision of these Terms is invalid, illegal, or unenforceable in any jurisdiction, such invalidity, illegality, or unenforceability shall not affect any other term or provision of these Terms or invalidate or render unenforceable such term or provision in any other jurisdiction.
    10. Miscellaneous
    These Terms and any disputes arising in connection therewith shall be exclusively governed by and construed in accordance with the laws of the United Mexican States, without regard to its conflicts of law principles. The state and federal courts located in Queretaro, Mexico shall have exclusive jurisdiction to adjudicate any dispute arising in connection with these Terms. By downloading the Data, you agree to submit to the exclusive and personal jurisdiction of the state and federal courts located in Queretaro, Mexico.

    Revised: 27/10/2025

    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.

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