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No.000232 Positioning Mechanism
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94

Manually positioning mechanism.

Related Category

Lead Screw

Lead Screw
Product name Lead Screws/Straight
Part number MTSTR16-474
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria | Available sizes | Accuracy Info | Technical calculations

Selection criteria

Converts rotary to linear motion.

Available sizes

■Lead Screw, Straight Type, Right-Hand Screw

Material Surface Treatment Compatible lead screw nut
Type Material
EN 1.1191 Equiv. - Right-hand Thread Brass
Black Oxide
EN 1.4305 Equiv. -

■Sizes and Dimensions

Screw shaft nominal Pitch Overall Length
1mm Increment 100 mm Increments
8 1.5 50 ~ 500 -
10 2 80 ~ 1000
12
14 3
16 100 ~ 1200 1300 ~ 2000
18 4 150 ~ 1200
20
22 5
25
28
32 6 200 ~ 1200
36
40
50 8 -

* Manufacturable ranges vary slightly depending on material or screw shaft nominal Dia. Please see the product pages for details.

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Accuracy Info

■Lead screw: Screw shaft runout tolerance (Max.)

(mm)

Shaft Dia. Screw shaft length
-125 126
-200 		201
-315 		316
-400 		401
-500 		501
-630 		631
-800 		801
-1000 		1001-1250 1251-1600 1601-2000
Ø8 0.1 0.14 0.21 0.27 0.35 - - - - - -
Ø10-12 0.09 0.12 0.16 0.21 0.27 0.35 0.46 0.58 - - -
Ø14 0.09 0.11 0.13 0.16 0.2 0.25 0.32 0.42 - - -
Ø16 0.09 0.11 0.13 0.16 0.2 0.25 0.32 0.42 0.55 0.73 1
Ø18-20 - 0.11 0.13 0.16 0.2 0.25 0.32 0.42 0.55 0.73 1
Ø22-32 - 0.09 0.11 0.13 0.16 0.19 0.23 0.3 0.38 0.5 0.69
Ø36-50 - 0.11 0.11 0.11 0.13 0.15 0.17 0.22 0.27 0.34 0.46

■Lead Screw Accuracy Standards

Item Content
Allowable Dimension and Tolerance JISB0217 0218
Screw Accuracy 7e Class
Nut Accuracy 7H Class
Single Pitch Error ±0.02
Accumulated Pitch Error ±0.15/300mm
Length tolerance JISB0405(Medium class)
Screw shaft end DIA. tolerance h7

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Technical calculations

■Lead screw･Lead screw nut selection steps

Calculate Contact Pressure P and Sliding Velocity V based on conditions of use to check that no abnormal wear will occur.
Plot the calculated P and V values against the PV value graph and confirm the intersection.
If the intersection falls inside of line (1) and (2), it is determined that abnormal wear would not occur.

Determine conditions of use.

↓

Lead screw･lead screw nut temporary selection

↓

Calculate (1) Contact Pressure P, (2) Sliding Velocity V,
Confirm if it is inside of (1) and (2) on PV value graph.

↓

Calculate screw efficiency η and load torque T.

(Axial load, rotational speed)


(Lead screw･lead screw nut material)

↑

(If not good)

PV Value graph

  • (1) Steel (lubricated) - Brass
  • (2) Steel (unlubricated) - Resin
PV Value graph

(1) Contact surface pressure P (N/mm²)

Contact Pressure P
  • Fs: Shaft axial load(N)
  • F 0 : Allowable Dynamic Thrust (N) -> Nuts for Lead Screw Specifications
    Thrust when contact surface pressure of the lead screw and nut becomes 9.8 (N/mm²).
  • α: 9.8(Brass)　0.98(Resin)

(2) Sliding speed V (m/min)

すべり速度V
  • d2: Screw shaft effective Dia. -> From lead screw specifications table
  • d: Screw Shaft Lead Angle (degree)　-> Lead Screw Specifications
  • n: Screw shaft rotation per minute (nim-1)

(3) Screw efficiency η

Screw efficiency η
  • μ: dynamic friction coefficient
  • d: Screw shaft lead angle (deg.)

<Dynamic friction coefficient reference value >

Thread Shaft Nuts for Lead Screws Dynamic friction coefficient μ
Steel (Lubricated) Brass 0.21
Steel (Unlubricated) Polyacetal / PPS Resin
with Sliding Property		 0.13

(4) Load torque (N･cm)

Load torque
  • Fs: Shaft axial load
  • η: Screw efficiency
  • R: Lead (cm)

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Knurled Handwheels - Aluminum

Knurled Handwheels - Aluminum
Product name Knurled Handwheels/Aluminum
Part number HOKW63
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria ｜ Available sizes

Selection criteria

Consider the operability, and select the one with appropriate O.D.

Available sizes

■Aluminum Knurling with Standard Handle

Handle Handle Handle Thread Tapped
Material Surface Treatment Material Material Surface Treatment
EN AW-5056 Equiv. Black anodize Nylon 6(Black) EN 1.0715 Equiv. Black Oxide Tapped Hole
Without Tap
Clear Anodize Nylon 6(White) Tapped Hole
Without Tap
EN 1.4301 Equiv. - EN 1.4301 Equiv. EN 1.4301 Equiv. - Tapped Hole
Without Tap

■Sizes and Dimensions

Knob
O.D. 		Shaft Bore Dia. Handle Height Handle Set Screw Dia.
(Black Handle, Black Grip,
Tapped) 		Mounting height Width Diameter Length
Ø40 Ø8 Ø6 ･ Ø8 25 12 Ø13 18.8 M5
Ø50 Ø10 Ø8 ･ Ø10 28 13
Ø63 Ø12 Ø10 ･ Ø12 32 14 Ø14 20.8
Ø80 Ø16 Ø12 ･ Ø16 40 15 Ø16 23.8 M6

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IDEA NOTE Simplified positioning (alignment) mechanism

Linear positioning is performed by utilizing a lead screw. Lead screw converts rotary motion from the handwheel to linear movement.

  • 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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    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.
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      Each sub-assembly unit can be used as it is or can be edited.

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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

  • Workpiece is roughly set on the manual presser. Using urethane mold bearings and lead screw mechanism, workpiece can be aligned against the presser.

Points for use

  • Manual unit is operated by aluminum knurled handwheel mounted on lead screws.

Target workpiece

  • Material: Resin
  • Shape: thin plate
  • Outer dimensions: W140 x D165 x t3mm
  • Workpiece weight: 150g

Design Specifications

Operating Conditions or Design Requirements

  • Alignment stroke: 19.5mm (for different workpieces, it can be extended up to 45mm)
  • Outer dimensions: W183 x D430 x H136mm

Required Performance

  • Required accuracy: 0.1mm

Selection Criteria for Main Components

  • Lead screw/nut
    • The rotary movement is converted to linear movement for manual positioning.
  • Urethane Molded Bearings
    • Selected to prevent workpieces from being damaged.

Design Evaluation

Other Design Consideration

  • For different size workpieces, a scale can be added to visually confirm proper positioning.
  • When pushing a workpiece against the presser, the operator has to confirm workpiece final position and avoid excessive handwheel rotation.

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
2 Resin Lead Screw Nuts MTSFJR16 1
3 Aluminum Knurled Handwheels HOKW63 1
4 Bearing Holder HBRS12 2
5 Linear Shaft PSSFG15-395 2
6 Shaft Collars SSCSM15-12 4
7 Shaft Collars SSCSPD15 4
8 Oil Free Bushings JZB15-10 4
9 Rundstangen SETK10-26-M5-N4 2
10 Ball Bearing UMSB6-20 2
11 Clamp Levers CLMS5-20-B 1
12 Point Plate PPS12 1
13 Scale Tape TMEPN-2000 1
14 Hex Posts SLSBWRK10-100 6
15 Socket Head Cap Screws-with Washer SCBS4-15 4
16 Socket Head Cap Screws-with Washer SCBS5-20 14
17 Socket Head Cap Screws-with Washer SCBS5-25 8
18 Socket Head Cap Screws-with Washer SCBS6-20 10
19 Phillips Pan Head Screws - with Washer Set SCBJ2-5 2
  • 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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