assembly instructions for cnc milling · pdf fileassembly instructions for cnc milling machine...

Baubeschreibung CNC-Rev2E.doc 19.11.02 1

Assembly Instructions for CNC Milling Machine construktion: Engineer Volker Jung, firm „CAD und Modelltechnik Jung“ Engineer Christian Jung, firm „Modelltechnik-Jung“ technical datas: travel: *

X =745 mm Y =275 mm Z =100 mm

required surface: X=1200 mm Y=800 mm * other dimension in gradation at 100 mm This drawing shall not be copied or used wholly or in part without prior written consent of the company. © All rights reserved


table of contents building specifications piece list source of supply colour prints from complete maschine and details subassembly drawings:

subassembly complete maschine subassembly X - axis subassembly Y - axis subassembly Z - axis

subassembly drawings: subassembly Anschlag X / Y / Z -Achse subassembly Spannrolle X-Achse subassembly Lagerbock X-Achse subassembly Lagerbock Y / Z-Achse part drawings: parts 01 to 71 appendix: subassembly Z-axis with router, parts Z01 to Z03 subassembly, holding device for supply of cooling liquid, parts Z10 to Z12


General The construction of the CNC milling machine is quite simple, as it is based on a large number of prefabricated parts. However, fabrication of some of the parts requires the use of a lathe. The milling machine assembly must be performed in a defined order. Otherwise, it might happen that some of the assembled parts must be disassembled again, because certain screws are not accessible. When assembling the machine sub-components, be sure not to tighten the screws with their maximum torque. The Item-profiles tend to deform when screwed together with groove stone. When this happens, a further alignment becomes quite complicated, if not impossible. Therefore, the tightening of screws should be performed in several steps using a torque wrench. The accuracy of the milling machine depends largely upon the accuracy with which the rails and guide block are aligned against one another. A dial gauge is therefore definitely required. Dimensional Adjustments to the X-, Y- or Z-Axis By lengthening or shortening (in steps of 100 mm) of the various profiles and the corresponding spindles, practically any desired dimension is possible. for a changed X-axis:

- part 1 = 2 pieces shielding cuff - part 7/8 = groundplate aluminium / plywood - part 12 = 2 pieces Item-profils 80x40 - part 19 = 2 pieces ball srew spindle - part 36 = 2 pieces THK-rails - part 59 = 1 piece T-slot profile PT25/375 - number of screws and tenon blocks for the THK-rails

= 2 pieces each 60 mm for a changed Y-axis:

- part 7/8 = groundplate aluminium / plywood - part 13 = 2 pieces Item-profils 120x40 - part 14 = 2 pieces Item-profils 160x40 - part 20 = 1 piece ball srew spindle - part 37 = 2 pieces THK-rails - part 59 = 1 piece T-slot profile PT25/375 - part 69 = 1 pieces tooth belt

number of screws and tenon blocks for the THK-rails = 2 pieces each 60 mm

for a changed Z-axis:

- part 15 = 1 piece Item-profils160x40 - part 16/17 = 2 pieces Item-profils 160x40 - part 21 = 1 piece ball srew spindle - part 35 = 2 pieces THK-rails - number of screws and tenon blocks for the THK-rails

= 2 pieces each 60 mm


When doing so, all relevant parts must be adjusted (lengthened/shortened) by the same amount as the corresponding axis. However, always keep in mind, what lengths are commercially available for the ball srew spindle. The travel distance of the Z-axis should not be selected too long, since the Z-axis might then start to vibrate during milling. Also, since the length of a milling cutter is limited, a oversized Z-axis does not make sense, as it might restrict the effectual part depth which can be machined. We recommend a maximum travel distance of 200 mm for the Z-axis, except when machining lightweight wood types or comparable materials. Subassembly Z-Axis The two THK-rails (35) are provisionally screwed to the Item-profile (15) of the Z-axis. The screws are tightened a little bit, but not with maximum torque. One of the rails should already be aligned in parallel to the Item-profile. After the guide block (65) have been lined up, the assembly plate of the Z-axis (28) is screwed to the guide blocks. The screws are again tightened a little bit, but not with maximum torque. The second rail is aligned in such a way, that the entire guide block system can easily move from one end to the other. After the assembly plate (28) has been disassembled, the relative height of both rails has to be measured and adjusted. This is done by attaching a support arm and dial gauge to one of the guide blocks. When moving this ram from one end to the other, the dial gauge will measure any differences in height of the corresponding ram on top of the second rail. Small deviations in height (2 – 3/100 mm) can be leveled out by selective tightening of the various screws. Larger deviations require the use of aluminum foil which is placed underneath the rail for leveling. The leveling procedure might require several passes, before it is successful. After leveling of the rails is complete, the remaining parts can be assembled. The screws/bolts for the bearing blocks (24, 26) are tightened a little bit, but not with maximum torque. Subassembly Y-Axis The two THK-rails (37) are aligned by means of assembly plate (28) (procedure as described for the subassembly Z-axis) and screwed to the profile (14). Only then is the assembly plate (28) screwed/bolted to the guide blocks of the Z-axis. The ball srew nut (18) of the Y-axis and the ball srew spindle is attached to the backside. Subassembly X-Base-Frame The various parts are arranged according to the drawing “Subassembly X-Base-Frame”. Subassembly XY-Portal The Y-profiles are screwed to both guide blocks on one side of the X-axis. When doing so, special care must be taken, in order to guarantee an exact perpendicular alignment.

CNC Milling Machine www.modelltchnik-jung.dewww.cad-modelltechnik-jung.de

piece list

part-no. number designation axis a x b x l material execution, norm supplier delivery no.

01 2 shielding cuff X 40 x 60 x 1040,0 aluminium see drawing

02 1 bolt X ∅ 15 x 22,3 aluminium see drawing

03 10 mechanical stopp X / Y / Z 20 x 15 x 25,0 aluminium see drawing

04 4 spacer for bearing support X / Y / Z ∅ 20 x 4,0 Al-Cu-Mg-Pb see drawing

05 6 end switch, (micro switch) X / Y / Z - assembly units http://www.conrad.de/

06 6 set screw X / Y M 5 x 6,0 steel standard part, DIN916

07 1 groundplate aluminium X 1200 x 800 x 3,0 Al-Mg-Si see drawing

08 1 groundplate plywood X 1200 x 800 x 40,0 plywood see drawing

09 8 grommet (for wire) X / Y / Z ∅ 8 rubber assembly units http://www.conrad.de/

10 4 bracket, end switch Y / Z 15 x 22,5 x 22,0 aluminium see drawing

11 2 bracket, end switch X 20 x 2 x 60,0 aluminium see drawing

12 2 Item-profile 80x40, light X 80 x 40 x 969,25 aluminium assembly units (adapt, see drawing) Item 0.0.026.04

13 2 Item-profile 120x40, light X 120 x 40 x 675,0 aluminium assembly units (adapt, see drawing) Item 0.0.416.66

14 1 Item-profile 160x40, light Y 160 x 40 x 680,0 aluminium assembly units (adapt, see drawing) Item 0.0.418.35

15 1 Item-profile 160x40, light Z 160 x 40 x 380,0 aluminium assembly units (adapt, see drawing) Item 0.0.418.35

16 1 Item-profile 160x40, light, left Y 160 x 40 x 380,0 aluminium assembly units (adapt, see drawing) Item 0.0.418.36

17 1 Item-profile 160x40, light, right Y 160 x 40 x 380,0 aluminium assembly units (adapt, see drawing) Item 0.0.418.36

18 4 ball srew nut, 16 x 5, typ 25 X / Y / Z steel assembly units (see drawing) http://www.isel.com 213 001

19 2 ball srew spindle, 16 x 5 X ∅ 16 x 1052,0 steel assembly units (see drawing) http://www.isel.com 211 134 2105

20 1 ball srew spindle, 16 x 5 Y ∅ 16 x 552,0 steel assembly units (see drawing) http://www.isel.com 211 134 2055

21 1 ball srew spindle, 16 x 5 Z ∅ 16 x 352,0 steel assembly units (see drawing) http://www.isel.com 211 134 2035

22 13 ball bearing - 6000 2RS X / Y / Z ∅ 10 x 26 x 8,0 steel standard part Techpro

23 2 bearing support X 60 x 30 x 23,5 Al-Cu-Mg-Pb see drawing

24 2 bearing support Y / Z 60 x 30 x 23,5 Al-Cu-Mg-Pb see drawing

25 2 bearing support narrow X 60 x 30 x 15,0 Al-Cu-Mg-Pb see drawing

26 2 bearing support narrow Y / Z 60 x 30 x 15,0 Al-Cu-Mg-Pb see drawing

27 2 assembly plate Y 60 x 15 x 160,0 Al-Mg-Si see drawing

28 1 assembly plate Z 200 x 20 x 190,0 Al-Mg-Si see drawing

29 2 mounting angle step motor X / Y 100 x 50 x 5,0 aluminium see drawing

30 1 mounting angle step motor Z 100 x 50 x 5,0 aluminium see drawing

31 1 motor standard 71P2, B.3, DMA1, 0,55 kW, 2800 1/min Z - assembly units Bretzel GmbH

32 12 nut, self-locking X / Y / Z M 4 steel standard part

33 19 tenon block M5 X / Z M 5 steel assembly units Item 0.0.420.05

34 85 tenon block M6, heavy X / Y / Z M 6 steel assembly units Item 0.0.427.75

35 2 rail HSR20 Z 300,0 steel assembly units (cut to size) http://www.thk.com/

dimension

Stückliste CNC-Fräse.xls, Stückliste englisch, Rev. 6,13.08.2006

- 1 - no warranty

CNC Milling Machine www.modelltchnik-jung.dewww.cad-modelltechnik-jung.de

source of supply

firm address phone./fax internet email remark

item Industrietechnik und Maschinenbau GmbH D - 42699 Solingen Friedenstraße 107-109 http://www.item-international.com/ aluminium profils

isel automation KG D - 36132 Eiterfeld Im Leibolzgraben 16 0 66 72 / 8 98-0 http://www.isel.com spindles, aluminium profils, rails, guide block

THK GmbH D - 40878 Ratingen Hubert-Wollenberg-Str. 15021 02 74 25-0 021 02 74 25-2 99 http://www.thk.com/ spindles, rails, guide block

Bretzel GmbH D - 65760 Eschborn Industriestraße 26 0 61 96 / 403 19 - 0 http://www.bretzel-gmbh.de/ Elektromotoren, frequency converter

Mädler GmbH D - 70573 Stuttgart Tränkerstraße 80711/ 720 95-0 0711/ 720 95-33 http://www.maedler.de tooth belt, toothed looked washer

Format Werkzeuge D - 76142 Karlsruhe Am Zinken 207 21/78 08-0 07 21/ 80 81 00 collet bush, milling cutter

NC-Step Thorsten Ostermann D - 52078 Aachen Ringstraße 46 http://www.nc-step.de [email protected] Schrittmotorkarte, step motors, Netzteilplatine

MIR-ELEKTRONIK VERTRIEBS GMBH D- 80336 MÜNCHEN Landwehrstraße 28 http://www.mir-elektronik.de/ Schrittmotorkarte, step motors

Omega-Elektronik D - 79115 Freiburg Eschholzstr. 58 07 61/27 47 77 inexpensive step motors

Conrad Elektronic D - 92249 Hirschau Klaus-Conrad-Str. 10180/53 12 111 0180/53 12 110 http://www.conrad.com/ elektronic parts

Burkhard Lewetz D-88071 Meckenbeuren Postfach 1221075 42/2 18 86 0 75 42/38 89 http://www.lewetz.de/ [email protected] software PCNC

CNC & Datentechnik Frank Thiemig D - 22763 Hamburg040/ 880 72 68 040/ 880 72 69 http://www.thiemig.com/ Schrittmotorkarte, step motors, software

Hard und Software Entwicklung Matthias Potthoff 51766 Engelskirchen Oststraße 13 022/ 63 95 21 70 http://www.pcdreh.de [email protected] Schrittmotorkarte,step motors, Netzteile, wires

other Software (only Internet-links):Software

http://users.andara.com/~fenerty/master.htmhttp://www.thegallos.com/stepster.htmhttp://kellyware.com/kcam/kcam.htmlhttp://metalworking.com/shareware.htmlhttp://www.deskam.com/

Konvertierungsprogrammehttp://Werner.Stratmann.bei.t-online.de/ ACAD-Dateien(=*.dwg), oder Postscript(=*.ps) aufbereiten (Vektoren drehen, verketten, Radiuskorrektur)http://www.deskproto.com/ erzeugt aus 3-D Modellen G-Code Befehle. Diese Befehle versteht dann die Steuersoftware http://www.filou.de/software/ ACAD-Dateien(=*.dwg), oder Postscript(=*.ps) aufbereiten. CNC-Programme schreiben

software Master 5

Stückliste CNC-Fräse.xls, Bezugsquellennachweis englisch, Rev.3, 18.11.2002 - 4 - no warranty

rev. 2

CNC-Milling Machine complete, isometric view

sh. 1/2

CAD und Modell-technik Jung CNC Milling Machine

This drawing shall not be copied or usedwholly or in part without prior written consentof the company. (C) All rights reserved

-

AA

rev. 1M 1 : 1

subassembly belt tensioning pulley, X-axis

sh. 1/1

SCHNITT A-A

541

431

621

021

221

331



rev. 2sc. 1 : 2

shielding cuff, X-axis

sh. 1/1Al-Mg-Si part 01This drawing shall not be copied or usedwholly or in part without prior written consentof the company. (C) All rights reserved

CAD und Modell-technik Jung

8

203032

15,5

36

55

15,5

65

93

60

40

3

O 5,5 O 8 O 8 O 5,5

1040

35 35

M3

CNC Milling Machine

1 x manufacture in conformance with drawing1 x manufacture without thread M3 and without boring 8mm (cable bushing)

rev. 1sc. 2 : 1

bolt

sh. 1/1Al-Cu-Mg-Pb part 02



5O

10 +0,01O

8O

3

22,25

12O

15O

80,2

5

380

40

160

rev. 2sc. 1 : 2

Item-profile 160 x 40 light, Z-axis

sh. 1/1Al part 15

63 9

O8

40

CAD und Modell-technik Jung

190

O10

,5

46,5

67

by alternative assembly bythe router:cut here thread M8 x 30 mm

CNC Milling Machine

x)x)

y)

y)


x) boring for cable bushing (only one-sided)y) assembly boring (through milling)

290* L thread = / 490 / 990 (L - 62 mm)

352* L = / 552 / 1052

rev. 2sc. 1 : 2

ball srew spindle, 16 x 5, X/Y/Z-axis

sh. 1/1St part 19-21

52 10

10O

10O

10M

x 1,2

5

8O

assembly units

16O

thread pitch 5 mm


* lenght from ball srew spindlesX-axis: L = 352 mmY-axis: L = 552 mmZ-axis: L = 1052 mm


16

26

28

assembly instructions for cnc milling · pdf fileassembly instructions for cnc milling machine...

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