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  • Helpful application examples for mechanical engineers.

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No.000161 Workpiece Separation/Feed Mechanism
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46

Separation and unloading of circular workpieces with a single pneumatic cylinder

Related Category

Hinge Base - Center Fulcrum

Hinge Base - Center Fulcrum
Product name Hinge Bases/Center Fulcrum
Part number HGCNB8-W8-H25
Features Center fulcrum type hinge base that can be used as cylinder clevis mounts.
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria | Available sizes

Selection criteria

Suitable for the configuration to fix the cylinder economically

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Available sizes

■Hinge Bases (Selectable Sizes)

Type Material Surface Treatment
T-Shaped EN 1.1191 Equiv. Black Oxide
Electroless Nickel Plating
EN 1.4301 Equiv. -

■Sizes and Dimensions

Hinged
Diameter Width
1mm Increment 		Height
5mm Increments
Ø3 3 - 6 15 - 25
Ø4 4 - 8 20 - 30
Ø5 5 - 10
Ø6 6 - 12 25 - 35
Ø8 8 - 16
Ø10 10 - 18 30 - 40
Ø12 12 - 30
Ø13 13 - 30
Ø14 14 - 24 35 - 45
Ø15 15 - 24
Ø16 16 - 24
Ø20 20 - 30 40 - 50
Ø25 25 - 35

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Stepped Bolts

Stepped Bolts
Product name Stepped Bolts - Extra Low Head
Part number DBTS5-8-5-PC
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria | Available sizes

Selection criteria

Suitable for the configuration that requires double stepped end machining

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Available sizes

■Stepped Screws (Selectable Sizes)

Type Material Surface Treatment
Extra Low Head Low Head Button Head Cap Screw Phillips
○ ○ ○ ○ EN 1.1191 Equiv. Black Oxide
○ ○ ○ ○ EN 1.1191 Equiv. Electroless Nickel Plating
○ ○ ○ ○ EN 1.4305 Equiv. -

■Sizes and Dimensions

Type Screw Dia. Thread Length Stepped Dia. Stepped Length
Extra Low Head M3 3 - 6 Ø5 5 - 20
M4 4 - 8 Ø6
M5 5 - 10 Ø8
M6 6 - 12 Ø10
M8 8 - 12 Ø12
M10 10 - 15 Ø15
Low Head M3 3 - 6 Ø5 3 - 20
M4 4 - 8 Ø6
M5 5 - 10 Ø8
M6 6 - 12 Ø10
M8 8 - 12 Ø12
M10 10 - 15 Ø15
Button Head Cap Screw M3 3 - 6 Ø5 5 - 20
M4 4 - 8 Ø6
M5 5 - 10 Ø8
M6 6 - 12 Ø10
M8 8 - 12 Ø12
M10 10 - 15 Ø15
Phillips M3 3 - 6 Ø5 1 - 20
M4 4 - 8 Ø6
M5 5 - 10 Ø8
M6 6 - 12 Ø10
M8 8 - 12 Ø12
M10 10 - 15 Ø15

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Rod End Bearings

Rod End Bearings
Product name Rod End Bearings/Standard
Part number PHSCM8
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria | Available sizes | Accuracy Info | Performance info.

Selection criteria

Suitable for the configuration of changing the cylinder movement to swinging

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Available sizes

■Rod End Bearings (Standard)

Type Material
Holder Spherical Inner Ring Bushing (Liner)
Steel EN 1.1181 Equiv.( Trivalent Chromate) EN 1.3505 Equiv.(58HRC -) Special Copper Alloy
Oil-Free Bearing I.D. 3 / 4 (Trivalent Chromate) EN 1.3505 Equiv.(58HRC -) Self-lubricating Synthetic Resin
Other Than Above EN 1.3505 Equiv.(58HRC -) Polytetrafluoroethylene Resin
Stainless Steel Oil Free EN 1.4305 Equiv. EN 1.4125 Equiv. (58HRC -) Polytetrafluoroethylene Resin

■Sizes and Dimensions

Bearing I.D. Ball Center - Holder Edge
3 12
4 14
5 16
6 18
8 22
10 26
12 30
14 34
16 38
18 42
20 46
22 50

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Accuracy Info

■Rod End Bearings Accuracy

Bearing I.D. I.D. tolerance
(H7)
3      +0.009
       0
4      +0.012
       0
5
6
8      +0.015
       0
10
12      +0.018
       0
14
16
18
20      +0.021
       0
22

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Performance info.

■Static Load Capacity of Rod End Bearings

Bearing I.D. Static Load Capacity
Radial Ca (kN)
Steel Oil-Free Stainless Steel Oil Free
3 - 1.57 -
4 - 2.25 -
5 5.59 3.92 0.98
6 6.86 5 1.44
8 9.8 7.45 2.69
10 13.2 9.41 4.16
12 16.7 11 5.88
14 20.6 15.2 6.61
16 25 20.2 8.33
18 29.4 25.2 11.52
20 34.3 27.8 -
22 41.2 35.9 -

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IDEA NOTE Separation and unloading of circular workpieces

Stacked circular workpieces are separated and unloaded by a single cylinder.

  • 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.

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

Application Overview

Purpose

  • Purpose
    • To separate and unload stacked workpieces.
  • Operation
    • Claws connected with links are turned by the cylinder. As the cylinder extrudes, the lower claws unload the workpiece at the lowermost layer. At the same time, the upper claws retain the workpiece in the second layer from the bottom. As the cylinder retracts, the workpiece is detached from the upper claws and passed downward to the lower claws that have turned.

Target workpiece

  • Shape: circular flanged pallet
  • Size: Ø100 x H10mm
  • Weight: 1kg
  • Maximum number of stacked workpieces: 5

Design Specifications

Operating Conditions or Design Requirements

  • Outer dimensions: W350 x D250 x H68mm
  • Separation and unloading of workpiece
    • Claw operation angle: 45 degrees
  • Cylinder
    • Action stroke: 21mm

Required Performance

  • Workpiece weight
    • 50N (when stacked at maximum)

Selection Criteria for Main Components

  • Oil free bushing
    • Environment resistance
    • Low load
    • Low speed

Design Evaluation

Verification of main components

  • The cylinder thrust power is verified to see whether the workpiece feed motion is possible when the workpieces are stacked at maximum.
  • Check of feed motion with workpieces stacked
    • Conditional value: workpiece m = 1kg, maximum number of stacked workpieces n = 5 pieces, gravitational acceleration g = 9.8m/s², cylinder diameter = 20mm, supply pressure = 0.5MPa, link ratio (1) = cylinder-side arm:claw arm = 4 : 3, link ratio (2) = claw arm:claw = 6 : 5, cylinder thrust power = 157N, maximum angle formed by cylinder-side arm and claw arm θ = 45°, mechanical efficiency = 50%, friction coefficient µ1 = 0.2 (oil free bushing), friction coefficient µ2 = 0.2 (resin and metal)
    • Claw operating force by cylinder: P = cylinder thrust power x link ratio (1) x link ratio (2) x mechanical efficiency x cos θ, therefore, P = 157 x (4 / 3) x (6 / 5) x 0.5 x cos (45°) = 88.8N
    • Friction resistance due to workpiece weight: F = (µ1 + µ2) x m x n, therefore,
      F = (0.2 + 0.2) x 1 x 5 = 2kg = 2 x 9.8 = 19.6N
    • Effective operation force P' = P - F = 88.8N - 19.6N = 69.2N

      From the above, the effective operation power P' = 69.2N while the overall workpiece weight is 5kg (49N). Therefore, the feed motion is possible.

Other Design Consideration

  • Optimization of workpiece height and clearance between claws.
  • Link does not require maintenance because of oil free bushing.

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 Air Cylinders MSCCA20-30 1
2 Sensors for Air Cylinders ME33L1 2
3 Brackets For Air Cylinders CTKB20 1
4 Hinge Bases HGCNB8-W8-H25 1
5 Rack Gears JZW8 8
6 Rack Gears JZF8-5 16
7 Step Screws DBTS5-8-5-PC 8
8 Stepped Bolts - Extra Low Head DBTS5-12-5-PC 1
9 Rod End Bearings PHSCM8 1
10 Workpiece Guide RGHS-1.5-20-50 4
11 Flow Rate Control Valves SPSNS6-M5 2
12 Cantilever Pin SFXNAC8A-4-F20-N10-MSC6 4
  • 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).
  • 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.

    Good IDEA!

    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.

    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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