1、E 5; n o 2 02 5 S c 5% p .- Y a E: FjE: n mm4 CtEZ -2;: SG-6 om,“ L 50 s 15 0: al -5!= 0- m“ zm E - Werkzeugmaschinen; Drehmaschinen mit erhhter Genauigkeit; Umlaufdurchmesser bis 500 mm, Drehlnge bis 1500 mm; Abnahmebedingungen For connection with the International Standard IS0 1708-1975 published
2、by the International Organization for Standardization (ISO), see Explanations. Dimensions in mm Machine Tools Swing up to 500mm, Turning Length up to 1500 mm Acceptance Conditions DIN 8605 Lathes of High Accuracy Type: Recipient: Machine number: Order number: - i Customer: Date: I 1 Purpose and appl
3、ication This Standard defines technical acceptance conditions for precision lathes with swing up to 500 mm and turning length up to 1500 mm. They comprise preparatory measures, geometrical testings on the machine (manufacturing accuracy) and practical testings on workpieces (working accuracy). The t
4、est conditions conform to DIN 8601 (successor issue at present circulating as draft), see Explanations. If some of the testings are not to be carried out or if additional testings are necessary, this is to be separately agreed between manufacturer and customer. The relevant German specifications are
5、 to be observed for testing the safety of the machine. The test procedures only state the test principle and the recommended test apparatus usuallyto be found in the majority of firms. Other test procedures corresponding to DIN 8601 (successor issue at present circulating as draft) and of equivalent
6、 accuracy are permissible. In the column headed “Test instructions“ the section number from DIN 8601 (successor issue at present circulating as draft) is shown at the end in cases where the testing concerned corresponds to the stipulations contained therein. 2 Preparatory measures Object of test i n
7、g Verifi- cation of level ling a in longi- tud na I direction Diagram a w Test apparatus Precision le ve I Optical or other methods Acces- sories (para I le Is, measuring bridge etc.) suited to the type of slide- way Test instructions Carriage at middle of bed. Make the measure- ments at a number of
8、 positions equally spaced along the entire length of the bed. a Place the level on the front or rear slideways. Variations per missi ble a 0.01 mm LI) up to 500 mm (convex) 0.01 5 mm L over 500 up to 1000 mm (convex13) Loca I toierance2): 0.005 mm over 250 mm 0.02 mm L over 1000 up to 1500 mm (CO n
9、vex) 3) Loca I tolerance: 0.005 mm over 250 rnm measured a . L =Turning length 2) Permissible variation which is referred to a specified length and can be measured at any point. 3) At the two ends the local tolerance can be twice as large over the length-. 4 L Continued on pages 2 to 7 Explanations
10、on page 7 7 Alleinverkauf der Normen durch Beuth Verlag GmbH. Berlin 30 und Kln 1 08.85 DIN 8605 engl. Preisgr. 6 Vertr.-Nr. O106 Page 2 DIN 8605 _ Variations Test apparatus Diagram Object of testing Test instructions permissible measured _ b in transverse direction b Place level on measuring bridge
11、 (straightedge). For both measurements the level may also be placed on the transverse slide or carriage. 3.1.1 5.2.1.2.2.1 5.2.1.2.2.2 b 0.03mm/m change in inclination b See01 a I 3 Geometrical testinas Straightnes of carriage movement in the hor izonta I plane or in the plane defined by the axis of
12、 the centres and the tool point a Dial indicator according to DIN 879 Test mandrel or straight- edge 300 mm long b forany turning length Test wire and micro- scope or optical methods a Mount test mandre between centres. Dial indicator on carriage. Stylus bearing in the hori- zontal plane against the
13、 test mandrel. Traverse carriage along the test mandrel. b Attach test wire at headstock, pass it over a pulley at the end of the bed and tension with a weight. Microscope on carriage. Line up the test wire at c and d by means of the cross wires of the microscope. Traverse carriage along the test wi
14、re. a 5.2.3.2.5 or 5.2.3.2.1 b 5.2.1.3.3 5.2.3.2.3 a and b 0.01 mm L upto 500 mm 0.01 5 mm L over 500 up to 1000 mm 0.02 mm L over 1000 up to 1500 mm a 1 A 2 Variation Test wire / Parallelism of carriage movement and tailstock guides a in the horizonta I plane b in the vertical plane Dial indicator
15、according to DIN 879 Dial indicator on carriage; stylus in contact with tailstock sleeve. The tailstock sleeve must be run out to a sufficient distance and locked as under normal working conditions. Traverse carriage and tailstock jointly over the full length of the bed. 5.4.2.2.5 a 0.02 mm Loca I t
16、olerance: 0.01 mm over 500 mm b 0.03 mm Local tolerance: 0.02 mm over 500 mm a TiE“. constant b DIN 8605 Page 3 Object of testing I Period- cal axial .lip of ,pindle I Camminc If shoulder Run-out Of spindle nose centring taper Run-out of i nt er na I taper of spindle a at the spindle nose b ata dist
17、ance equal to half the maximum turning diameter, subject to i maximum of 300 mm Diagram -F Test apparatus Dial indicator according to DIN 879 (Auxiliary measure- ment aid) Dial indicator according to DIN 879 Dial indicator according to DIN 879 Test mandrel with mounting taper Test instructions al nd
18、icator I on spindle axis on spindle shouldei jlowly rotate spindle. n the event of play n the thrust bearings, ipply Constant orce F. The value of F is to )e specified by the nanufacturer. 5.6.2 5.6.3 ipply the dial idicator at right ngles to the circum- xence of the taper. 810wly rotatespindle. n t
19、he event of play i the thrust bearings, pply constant force F he value of F is to le specified by the ianufacturer. 5.6.1.2.2 Test mandrel in internal taper. Apply dial indicator to circumference of test mandrel. Rotate spindle. Measure at a, then at b. 5.6.1.2.3 Variations permissible 4 0.005 mm 3
20、0.01 mm including periodical axial slip) 0.007 mm a 0.007 mm b 0.015 mm for a measuring length of 300 mm measured 3. . 3 . a . b . Page 4 DIN 8605 Variations Object of testing arallelism )f spindle ixis with arriage novement )ver a lengtb rqual to half he maxi- num turning iiameter, ,ubject to a nax
21、imum If 300 mm 1 inthe iorizontal dane I in the lerti ca I lane arallelism If tailstock ;leeve axis Nith carriage nove ment i in the 7orizontal dane 3 inthe dertical dane Parai le1 ism of receiving taper in ta Istock with carriage movement a in the horizontal plane b in the vertical plane Headstock
22、and tail- stock centres for same height above refer- ence plane D iagram - b 1 Test apparatus Dial indicator according to DIN 879 Test mandrel with mounting taper Dial indicator according to DIN 879 Dial indicator according to DIN 879 Test mandrel with mou nt i ng taper Dial indicator according to D
23、IN 879 Test mandrel for moun ti ng between centres Test instructions Test mandrel in inter- nal taper. Bring to mid-way position of run-out. Bring stylus into contact with circum- ference of test man- drel. Traverse carriage through the test distance; sequence of measurements as for G5. 5.4.1.2.1 5.
24、4.2.2.3 Bring dial indicator into contact with retracted and locked tailstock sleeve at c. Advance sleeve through 100 mm and re-lock. Traverse carriage to d. Measure at position c, then at d. 5.4.2.2.3 Test mandrel in retracted and locked tailstock sleeve. per missi ble a 0.01 mm over 300 mm directe
25、d towards tool point b 0.02 mm over 300 mm directed upwards a 0.01 mm over 100 mm directed towards tool point b 0.015 mm over 100 mm directed upwards a 0.02 mm over 300 mm directed Bring dial indicator towards tool into contact at c and I point traverse carriage along test mandrel. 5.4.2.2.3 Tailsto
26、ck and tail- stock sleeve locked. Bring dial indicator into contact with top generatrix of the test mandrel. Measure at both ends of the mandrel. 3.2.2 5.4.2.2.3 b 0.02 mrn over 300 mm directed upwards 0.02 mm (Tailstock centre higher) me - a b ._ ., a . . . b . a . . . . . . . b . . . . . . . . DIN
27、 8605 Page 5 Object of testing Parallelism Df spindle axis with longitudina movement Df upper slide Squareness of spindle axis to movement of cross- slide Periodical axial slip of leadscrew Measure- ment of pitch accuracy a generate( by lead- screw b measurec on lead- screw Diagram t-300 m.i.4 w MI
28、M2 Test apparatus Dial indicator according to DIN 879 Test mandrel with mounting taper Dial indicator according to DIN 879 Test plate or straight- edge Dial indicator according to DIN 879 Steel ba I I according to DIN 5401 a Dial indica tor according to DIN 879 and master leadscrew b Precision measu
29、ring instrument to choice (but use nut or nut segment) Test instructions Align upper slide guides parallel with spindle axis in the horizontal plane. Lock carriage. Mount test mandrel in internal taper and bring to mid-way position of run-out. Traverse upper slide, with dial indicator attached there
30、to, along the test mandre according to the travel provided. 5.4.2.2.3 Dial indicatormounteIN 879 Ctraight- edge (of suitable length for the diam- Iter of the test work- piece) 3 nd Clip gauge Slip gauges traigh tedg6 est instructions a Two-point or three-point measurement. The largest diameter diffe
31、rence determined is the amount of the variation. b Thediffer- ence in the two diameters turned is the amount of the variation. 3.1 3.2.2 4.1 4.2 Place straight- edge on the faced surface of the test workpiece, either direct or on two slip gauges of the same thickness. Determine distance be- tween st
32、raight- edge and test workpiece by introducing slip gauges over the whole diameter. 3.1 3.2.2 4.1 4.2 Variations per missi b le a 0.007 mm b 0.02 mm 1 = 300mm - 0.015 mm cl = 300 mm The surface is allowed concave only. measured a b 1 . . d DIN 8605 Page 7 Accuracy of pitch on screw- cutting Object o
33、f 0 I tes, I - 300 +- Diagram 3 - The screwcutting accuracy is determined by the geometrical testing G13. The practical testing P3 is therefore carried out only when specially agreed. Machining 1 Test conditions apparatus Theworkpiece Precision is to be measur i ng mounted instrument between centres
34、 and finish-cut in a single set- ting. The thread may start at any point on the leadscrew. I Variations permissible rest instructions The test instruction can be specified according to the type of precision measuring instrument used by the manufacturer. 0.03 mm over 300 mn Local to lerance : 0.01 mm
35、 over 60 mm measured atany point. 3.1,3.2.2 4.1,4.2.2 6.1,6.2 I measured . . . . . Explanations This Standard relates mainly to the incorporation of the Standard IS0 1708-1975, issued by the International Organization for Standardization (ISO). E: Test conditions for general purpose parallel lathes
36、- F: Conditions dessai des tours paralleles dusage The IS0 Standard distinguishes 3 types of lathe for which the following standards DIN 8605 - Lathes of high accuracy; swing up to 500 mm; turning length up to 1500 mm; acceptance conditions. DIN 8606 - Lathes of normal accuracy; swing up to 800 mm;
37、acceptance conditions. DIN 8607 - Lathes of normal accuracy; swing above 800 up to 1600 mm; acceptance conditions have been issued. Testing of the accuracy general - Contrle de la precision Compared with the July 1941 issue of DIN 8605, the testings have been supplemented as follows: G IO: Paralleli
38、sm of spindle axis with longitudinal movement of upper slide and G 11 : Squareness of spindle axis to movement of cross-slide. The following practical testings have been added: Testing P 1: Cylindricity and Testing P3 Accuracy of pitch on screwcutting. The test methods in the Standard correspond with IS0 Recommendation ISO/R 230 E: Machine Tool Test Code F: Code dEssais des Machines-Outils on the basis of which DIN 8601 “Acceptance conditions for machine tools for the machining of metals; general rules“ (successor issue at present circulating as draft) has been prepared.
