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No.000015 Surface Inspection Fixture

Surface inspection fixture with toggle clamp for quick setup

Toggle Clamp

Product name Toggle Clamps -Horizontal Handle-
Part number MC01-3
Features Hold Down, Flange Base Type. Low Profile-designed.
* Orange colored cells in the table below indicate the part numbers used in this example.

Selection criteria

Improves workability with a single lever action

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Available sizes

Toggle Clamps -Horizontal Handle-

Main body material 1018 Carbon Steel 304 Stainless Steel
Surface treatment Trivalent chromate -
Clamping force(N) 264.6 264.6 400 882 2352 264.6 264.6 882 2352
Weight(g) 30 35 60 130 265 30 35 130 265
Arm open/close angle 90° 90° 90° 85° 90° 90° 90° 85° 90°
Handle open/close angle 75° 75° 75° 73° 65° 75° 75° 73° 65°
Overall width 23.8 23.8 23.8 36 35 23.8 23.8 36 35
Overall height(Clampled) 17.3 17.3 34.6 37.8 47.6 17.3 17.3 37.8 47.6
Overall height(Unclamped) 48.3 48.3 78 96.8 110.2 48.3 48.3 96.8 110.2
Overall length (Clamped) 71 69.1 100.6 143.5 173 71 69.1 143.5 173
Clamp position Fixed Variable Variable Variable Variable Fixed Variable Variable Variable
Accessory Nylon Bolt Bolt with rubber
Material: NBR
Hardness: Shore A70
Stainless steel bolt

* Please see the product pages for shape details and dimensions.

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Round Wire Coil Springs

Product name Round Wire Springs -Spring Constant 0.5~1.0 N/mm-
Part number WL14-65
* Orange colored cells in the table below indicate the part numbers used in this example.

Selection criteria

Used to raise the measurement section when the toggle clamp is released.

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Available sizes

■Round Wire Springs -Spring Constant 0.5~1.0 N/mm-

Deflection
(Free length ratio)
Material O.D.
range
Free length
range
Spring Steel (ASTM A228) 304 Stainless Steel
75% φ3~16 5~70
60% φ3~27 5~90
45% φ3~27 5~90
40% φ2~27 5~100
40% φ3~27 5~80
35% φ3~27 5~100
30% φ4~27 5~100
25% φ3~27 5~100

■Sizes and Dimensions

O.D. Free length Coil wire DIA. Solid length Max. deflection Load(N)
φ12 10 φ0.8 4.8 4 4
15 φ0.9 7.2 6 5.9
20 φ0.9 7.2 8 7.8
25 φ0.9 7.2 10 9.8
30 φ1 10.5 12 11.8
35 φ1 10.5 14 13.7
40 φ1 10.5 16 15.7
45 φ1.1 15.4 18 17.7
50 φ1.1 15.4 20 19.6
55 φ1.1 15.4 22 21.6
60 φ1.2 22.8 24 23.5
65 φ1.2 22.8 26 25.5
70 φ1.2 22.8 28 27.5
80 φ1.3 34.5 32 31.4
φ13 10 φ0.85 5.1 4 4
15 φ0.9 6.3 6 5.9
20 φ1 8.7 8 7.8
25 φ1 8.7 10 9.8
30 φ1.1 13.2 12 11.8
35 φ1.1 13.2 14 13.7
40 φ1.1 13.2 16 15.7
45 φ1.1 13.2 18 17.7
50 φ1.1 13.2 20 19.6
55 φ1.1 13.2 22 21.6
60 φ1.1 13.2 24 23.5
65 φ1.2 18.6 26 25.5
70 φ1.2 18.6 28 27.5
80 φ1.4 37.8 32 31.4
90 φ1.4 37.8 36 35.3
φ14 15 φ1 7.5 6 5.9
20 φ1 7.5 8 7.8
25 φ1 7.5 10 9.8
30 φ1.1 11 12 11.8
35 φ1.1 11 14 13.7
40 φ1.1 11 16 15.7
45 φ1.2 15.6 18 17.7
50 φ1.2 15.6 20 19.6
55 φ1.2 15.6 22 21.6
60 φ1.2 15.6 24 23.5
65 φ1.3 22.1 26 25.5
70 φ1.3 22.1 28 27.5
80 φ1.3 22.1 32 31.4
90 φ1.5 43.5 36 35.3
φ16 15 φ1.1 8.2 6 5.9
20 φ1.1 8.2 8 7.8
25 φ1.2 10 10 9.8
30 φ1.2 10 12 11.8
35 φ1.2 10 14 13.7
40 φ1.2 10 16 15.7
45 φ1.4 21 18 17.7
50 φ1.4 21 20 19.6
55 φ1.4 21 22 21.6
60 φ1.4 21 24 23.5
65 φ1.5 29.7 26 25.5
70 φ1.5 29.7 28 27.5
80 φ1.5 29.7 32 31.4
90 φ1.6 40 36 35.3
φ18 20 φ1.5 10 8 23.5
25 φ1.6 12 10 29.4
30 φ1.6 12 12 35.3
35 φ1.7 16.2 14 41.2
40 φ1.7 16.2 16 47.1
45 φ1.8 19.8 18 53
50 φ1.8 19.8 20 58.8
55 φ1.8 19.8 22 64.7
60 φ1.8 19.8 24 70.6
65 φ2 32 26 76.5
70 φ2 32 28 82.4
80 φ2 32 32 94.1
90 φ2.2 43 36 105.9
100 φ2.2 43 40 117.7

*Other sizes are available. Please see the product pages.

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Performance info.

■Spring constant of round wire coil spring, O.D. referenced type (N/mm)

O.D. Max deflection (Free length) Type
75% 60% 45% 40% 40% 35% 30% 25%
φ2 - - - 0.5 - - - -
φ3 0.1 0.3 0.5 1 1.5 2 - 3.9
φ4 2.9 4.9
φ5 2 2.9 5.9 9.8
φ6
φ8
φ10 0.2
φ12
φ13 9.8 19.6
φ14
φ16
φ18 - 0.5 1 2.9 3.9 4.9 14.7 29.4
φ20 - -
φ22 - 29.4
φ27 -

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Technical calculations

■Coil spring load calculations

Load = Spring constant x Deflection

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Height Adjust Pin

Product name Height Adjust Pins- Hex, B/F Standard
Part number JPRA6-30.00
Features Can be used for height-adjusting.
* Orange colored cells in the table below indicate the part numbers used in this example.

Selection criteria

Height accuracy is necessary for this application example.

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Available sizes

■Height Adjust Pins- Hex, B/F Standard

Material Surface treatment Hardness
4137 Alloy Steel Heat treated hardness 46~50HRC
Black oxide Heat treated hardness 46~50HRC
Hard chrome plating Heat treated hardness 46~50HRC
Plating thickness 3μm or more Plating hardness 750HV~
304 Stainless Steel
440C Stainless Steel Heat treated hardness 50~55HRC

■Sizes and Dimensions

Thread DIA.
(Coarse)
Head height Head
Hex size
Under head
thread length
(Configure in 0.01mm increments)
M3 2.00〜10.00 6 5
M4 7 6
M5 8 8
M6 5.00〜30.00 10 8
M8 13 10
M10 10.00〜50.00 17 12
M12 19 15

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Accuracy Info

■Accuracy of height adjust pins threaded type (Hex)

Head height tolerance: +0.01/0

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IDEA NOTE Up/down mechanism with springs and bushings + One touch holding.

The inspection instrument movements are guided by bushings and shafts, and raised by the springs. While inspecting, the toggle clamp pushes the inspection instrument down.

  • 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)

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    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.

    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.

    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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  • * 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

  • Fixture used to measure the surface roughness of workpieces.

Points for use

  • Manual mechanism with toggle clamp operation.
  • Because measurements are taken often, the workpiece is simply placed on the holder.

Target workpiece

  • Stainless Steel material
    Dims.: φ30 x H30
    Weight: 170g

Design Specifications

Operating Conditions or Design Requirements

  • Toggle clamp operation angle: 5.5°
  • Spring deflection: 5mm
  • External dims.: W100 x D250 x H174

Required Performance

  • Pressure load: 0.6N/cm²
  • Spring constant: 1N/mm
  • This application uses 4 springs.

Selection Criteria for Main Components

  • Toggle clamp
    • Vertical type with high clamping force are used to retain spring reaction force.

Design Evaluation

Verification of main components

  • Select a spring that can support the load weight.
  • Spring load
    • Calculation formula: Reaction force : F=kx
    • Assumed load: F = 52N (Four springs)
    • Set length: 57mm, Free length: 65mm
    • Assumed deflection under pressure: x = 13mm (When set 8mm, When stroked 5mm),
    • then k = F / x / (4 pcs.) = 52 / 13 / 4= 1 N/mm
    • Spring constant: k =1N/mm is selected

Other Design Consideration

  • Since the fixture is used often, the mechanism is designed for quick setup through the use of the toggle clamp.
  • The toggle clamp is positioned to press on the mechanisms center of gravity.
  • The spring load is 5x the retaining load to provide stability during the inspection process.
    (Spring load of 52N against measurement instrument weight of 10N)
  • The work platform height is adjusted on the instrument side (10mm up/down)
  • Since the full stroke of the toggle clamp is not used, the clamp contacts the upper plate. A piece of urethane is provided to protect the piece in contact with the clamp.

Explore Similar Application Examples

Page - / -

Part List

No. Part Name Sample Picture MISUMI Part Number Quantity
1 Toggle Clamps - Hold Down, Horizontal Standard Handle (Flange Base) MC01-3 1
2 Oil Free Bushings - Bronze, Standard Flanged Housing Units - Compact Flange SHTNZ10-25 4
3 Round Wire Coil Springs/Deflection 40%-45%/O.D. Referenced WL14-65 4
4 Linear Shafts-Both Ends Tapped SSFJW10-84-M5-N5 4
5 Stop Pins - Screw Flat Type SSTFH10-26 2
6 Height Adjusting Pins - Hex - Threaded - High Accuracy JPRA6-30.00 2
7 Socket Head Cap Screws/with Standard Washer Set SCBS4-16 2
8 Socket Head Cap Screws/with Standard Washer Set SCBS5-12 4
9 Socket Head Cap Screws/with Standard Washer Set SCBS6-12 2
10 Metal Washers - T Dimension Configurable, Precision Class WSSS12-6-2 4
11 V Blocks/Precision Class VZB38 1
12 Dowel Pins Straight Type MS5-15 2
13 Standard Urethane Sheets UTMA1-20 1
14 Socket Head Cap Screws/with Standard Washer Set SCBS5-20 4
  • 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.

    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.

    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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