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Adjustable V-shaped support Adjustable V-shaped support

Adjustable V-shaped support - PowerPoint Presentation

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Adjustable V-shaped support - PPT Presentation

for TM1 Drive Beam girder Design review V Soldatov BERFMK 03122014 General requirements PETS Short PETS DB Quad EPUCRET Girder Drift tube DB Quad Sliding support Fixed support ID: 780860

adjustable soldatov type adjustment soldatov adjustable adjustment type screw solutions rail size load support girder lock 100 ball pets

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Presentation Transcript

Slide1

Adjustable V-shaped support

for TM1 Drive Beam girder Design review

V. Soldatov, BE-RF-MK

03.12.2014

Slide2

General requirements

PETS

Short PETS

DB Quad

EPUCRET Girder

Drift tube

DB Quad

Sliding

support

Fixed

support

PETS compact coupler

Totally 5 types of clamping:

- 2 different fixed clamps;

- 3 different sliding clamps.

TM1 layout

2

V.

Soldatov

, BE-RF-MK

Slide3

General requirements. Tolerances

Tolerances on the girder

EPUCRET Girder

210

70

Ref. surface A

Ref. surface B

0.01 A B

DB axis

Ø 0.01

PETS

Perpendicularity of surfaces A and B (see picture on the left):

0.02 mm

Flatness of the contact surfaces:

0.01 mm

Roughness of the contact surfaces:

0.2 µm

3

V.

Soldatov

, BE-RF-MK

Slide4

Current solution (non-adjustable)

4

Clamping. Sliding type.Type A. Strap with ball-head screws

Type B.

Spring

Type D.

Bracket

Type E.

Strap

Type C. Strap with ball-head screws

Clamping. Fixed type.

V.

Soldatov

, BE-RF-MK

Slide5

Adjustable solutions #1 “Rail”

Adjustment

Blocking

Runner

Adjustment screw

Rail

45˚ wedge

Pin

Jaw

5

V.

Soldatov

, BE-RF-MK

Slide6

Adjustable solutions #1: Rail

Assembly

About Bosch Rexroth Ball Rail System

6

V.

Soldatov

, BE-RF-MK

Slide7

Adjustable solutions #1: Rail

7

V. Soldatov, BE-RF-MK

Sizing options

Size 15

Size 9

Size 12

Size 9

Size 15

Static load capacity

2100 N

3900 N

Stat. torsional moment load

9.6 Nm39 Nm

Slide8

8

Adjustable solutions #1: Rail

Estimation of using the solution #1

t

ogether with SAS

Slide9

Adjustable solutions #2 “Plunger”

Adjustment

Plunger

Guide (Pin, standard)

Adjustment screw

Cu hub

for low friction

304L

Set screw M4

for blocking

9

V.

Soldatov

, BE-RF-MK

Slide10

Adjustable solutions #2 “Plunger”

Assembly

Single piece machined support

10

V.

Soldatov

, BE-RF-MK

Slide11

Pros and Cons

#1 Rail#2 Plunger

The resolution of adjustment is the same (by order of magnitude): 254 μ/rev

Smooth reliable movement (due to

ind.

solution)

Comparatively easy assembly, less parts

Heavy duty capability

Need no maintenance

Maintenance (nominal at given conditions)

Almost all the

load is taken by the adjustment screw. The load capacity limit is 90 N.Comparatively

complex assemblyComparatively

complex machining11

V. Soldatov, BE-RF-MK

Slide12

Versions history

Slide13

Adjustable V-shaped Support for BPM

13

Side lock

Ball head

V.

Soldatov

, BE-RF-MK

Slide14

Adjustment Screw

14

Newport Miniature Adjustment Screws

Model

AJS8-100-0.5H

AJS254-0.5H-NL

Adjustment Screw Thread

100 TPI (254 u/rev)

254 TPI (100 u/rev)

Drive Type

Hex

Hex

Travel

0.50 in. ( 12.7 mm)

0.50 in. ( 12.7 mm)

Load Capacity

10 lb ( 45 N)

20 lb ( 90 N)

Lock

Side Lock

Side Lock

AJS8-100-0.5H

V.

Soldatov

, BE-RF-MK