1、 Reference number ISO 23848-1:2009(E) ISO 2009INTERNATIONAL STANDARD ISO 23848-1 First edition 2009-11-15 Machine tools Ball splines Part 1: General characteristics and requirements Machines-outils Guidages cannels billes Partie 1: Exigences et caractristiques gnrales ISO 23848-1:2009(E) PDF disclai
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5、ED DOCUMENT ISO 2009 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs memb
6、er body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2009 All rights reservedISO 23848-1:2009(E) ISO 2009 All rights reserved iiiContents Pa
7、ge Foreword iv Introduction.v 1 Scope1 2 Normative references1 3 Terms and definitions .1 4 Classification and grade.2 5 Characteristics.4 5.1 Groove twist of the spline shaft.4 5.2 Spline shaft accuracy4 5.3 Spline outer race mounting accuracy .4 5.4 Total radial runout of the spline shaft in relat
8、ion to the axis of the support journals .5 5.5 Hardness 5 6 Shapes and dimensions .10 7 Test methods .10 7.1 Test environment.10 7.2 Groove twist.10 7.3 Accuracy of the spline shaft 11 7.4 Accuracy of the spline outer race mounting 13 7.5 Total radial runout of the spline shaft in relation to the ax
9、is of the support journals .13 7.6 Hardness 15 8 Inspection.15 9 Designation 15 10 Marking.16 Annex A (normative) Shapes and dimensions of the spline outer races .17 ISO 23848-1:2009(E) iv ISO 2009 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide fe
10、deration of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that com
11、mittee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accord
12、ance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard require
13、s approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 23848-1 was prepared by Technica
14、l Committee ISO/TC 39, Machine tools. ISO 23848 consists of the following parts, under the general title Machine tools Ball splines: Part 1: General characteristics and requirements Part 2: Dynamic and static load ratings and rating life ISO 23848-1:2009(E) ISO 2009 All rights reserved vIntroduction
15、 The ball spline is a power transmission component based on recirculating balls, which is designed to translate axially while transmitting torque by an anti-friction means. The ball spline is selected for its smooth operation, high speed capability, low friction and high-radial and high-torsional lo
16、ad capacity. This part of ISO 23848 specifies and standardizes the following characteristics of ball splines: the shapes and dimensions; the test methods; the inspection; the designation; the marking. ISO 23848-2 specifies and standardizes the following properties of ball splines: the basic static a
17、nd dynamic load ratings; the basic static and dynamic torque ratings; the rating life. INTERNATIONAL STANDARD ISO 23848-1:2009(E) ISO 2009 All rights reserved 1Machine tools Ball splines Part 1: General characteristics and requirements 1 Scope This part of ISO 23848 specifies and standardizes the fo
18、llowing characteristics for ball splines: the shapes and dimensions; the test methods; the inspection; the designation; the marking. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies.
19、 For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 554, Standard atmospheres for conditioning and/or testing Specifications ISO 6507-1, Metallic materials Vickers hardness test Part 1: Test method ISO 6507-2, Metallic materials Vickers hard
20、ness test Part 2: Verification and calibration of testing machines 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. NOTE See Figure 1. 3.1 ball spline machine element consisting of the spline shaft, spline outer race, balls and recirculation devic
21、es and seals, for providing smooth relative axial motion between the shaft and the outer race, while preventing their relative rotation for the purpose of transmitting torque ISO 23848-1:2009(E) 2 ISO 2009 All rights reserved3.2 effective spline length actual available length of axial travel for the
22、 spline outer race on the spline shaft 3.3 groove twist of the ball spline value of rotational deviation of the spline outer race over the effective travel length 3.4 nominal diameter of the spline shaft outer diameter of the spline shaft representing the size of the ball spline without tolerance, s
23、ometimes expressed as the pitch circle diameter without tolerance NOTE The pitch circle diameter, D p , refers to the diameter specifying the location of the rolling ball centres in the ball spline assembly with their theoretical contacts on the groove surfaces of both the spline shaft and the splin
24、e outer race. 3.5 spline groove groove ground or rolled along the axial direction on the shaft periphery or the inner surface of the spline outer race to facilitate the smooth rolling of balls inside the assembly 3.6 spline outer race assembly comprising the body with internal spline grooves, balls,
25、 recirculation devices and/or additional embodiments 3.7 spline shaft shaft consisting of axial spline grooves, which are matched with the grooves of a compatible spline outer race and can accommodate recirculating balls 4 Classification and grade Ball splines shall be classified as type A (angular)
26、 or type R (radial), as shown in Figure 1 and Table 1. Each ball spline type shall be divided into three grades, C1, C3 and C5, according to the quality and precision and may be represented by symbols such as: P for C1; H for C3; no symbol for C5. ISO 23848-1:2009(E) ISO 2009 All rights reserved 3a)
27、 Type AI b) Type AII c) Type R Key 1 seal 2 keyway 3 spline shaft 4 spline outer race 5 balls 6 retainer and/or end cap NOTE These drawings are examples of a construction. Figure 1 Names of the parts of typical ball splines ISO 23848-1:2009(E) 4 ISO 2009 All rights reservedTable 1 Type and symbol of
28、 ball splines Name Type Flange on the spline outer race Seal without one side (U) awithout with both sides (UU) awithout one side (U) aBall spline AI AII R with (F) awith both sides (UU) aaLetters in parentheses in this table are indication symbols, the application of which is given in Clause 9. 5 C
29、haracteristics 5.1 Groove twist of the spline shaft The tolerance on the groove twist of a ball spline, when measured by the method given in 7.2, shall meet the requirement of Table 2 with respect to 100 mm taken at random within the effective spline length. In cases where it is impossible to take 1
30、00 mm or more relative travel distance between the spline shaft and spline outer race, apply a converted value of Table 2 in proportion to the travel distance. Table 2 Groove twist of the ball spline Dimensions in micrometres Grade C1 C3 C5 Twist tolerance (max.) 6 13 33 NOTE See Figure 3. 5.2 Splin
31、e shaft accuracy The radial runout of the spline grooves, part mounting journals and the axial runout of the end face of the spline shaft in relation to the axis of support journals of the spline shaft, when measured by the methods given in 7.3.1 to 7.3.3, shall meet the specifications in Tables 3 t
32、o 5, respectively (see Figures 2, 4, 5 and 6). 5.3 Spline outer race mounting accuracy The axial runout of the spline outer race reference face or the flange mounting face of the flange, and the radial runout of the spline outer race in relation to the axis of the spline shaft, when measured using t
33、he methods given in 7.4.1 and 7.4.2, shall meet the specifications in Tables 6 and 7, respectively (see Figures 2, 7 and 8). NOTE Figures 2 to 9 typically show type AI, as an example. ISO 23848-1:2009(E) ISO 2009 All rights reserved 5Key 1 part mounting journal 2 spline groove 3 spline outer race 4
34、support journal 5 spline shaft NOTE 1 The support journals refer to the portions, where bearings will support the spline shaft. NOTE 2 The part mounting journals refer to the portions intended for mounting a gear wheel or other machine elements. NOTE 3 Not applicable to those without support journal
35、s and/or part mounting journal. Figure 2 Accuracy of the ball spline 5.4 Total radial runout of the spline shaft in relation to the axis of the support journals The tolerance on the total radial runout of the spline shaft in relation to the axis of the support journals, when measured using the metho
36、d given in 7.5, shall meet the specifications in Table 8 (see Figures 2 and 9). 5.5 Hardness The hardness of spline groove surfaces, when determined according to the method given in 7.6, shall be at least W 653 HV (W 58 HRC). ISO 23848-1:2009(E) 6 ISO 2009 All rights reservedTable 3 Radial runout of
37、 the spline grooves in relation to the axis of the support journals Runout tolerance m max. aNominal diameter, d 0mm Grade Over Up to and including C1 C3 C5 8 8 14 33 8 12 10 17 41 12 20 12 19 46 20 32 13 22 53 32 50 15 25 62 50 80 17 29 73 80 125 20 34 86 NOTE See Figure 4. aAs the influence of the
38、 runouts of the axis of the spline shaft is included in this value, a correction is needed. For the correction, obtain the correction value from Table 8 for the total runout tolerance on the shaft support journals corresponding to the ratio of the total shaft length to the measured distance between
39、the points of support and add it to the tolerance in Table 3 to apply. Table 4 Radial runout of the part mounting journals in relation to the axis of the support journals Runout tolerance m max. Nominal diameter, d 0mm Grade Over Up to and including C1 C3 C5 8 8 14 33 8 12 10 17 41 12 20 12 19 46 20
40、 32 13 22 53 32 50 15 25 62 50 80 17 29 73 80 125 20 34 86 NOTE See Figure 5. ISO 23848-1:2009(E) ISO 2009 All rights reserved 7Table 5 Axial runout of the end faces of the spline shaft in relation to the axis of the support journals Runout tolerance m max. Nominal diameter, d 0mm Grade Over Up to a
41、nd including C1 C3 C5 8 6 9 22 8 12 6 9 22 12 20 8 11 27 20 32 9 13 33 32 50 11 16 39 50 80 13 19 46 80 125 15 22 54 NOTE See Figure 6. Table 6 Axial runout of the spline outer race reference face or the flange mounting face in relation to the axis of the spline shaft Runout tolerance m max. Nominal
42、 diameter of the spline outer race, D 1mm Grade Over Up to and including C1 C3 C5 18 8 11 27 18 30 9 13 33 30 50 11 16 39 50 80 13 19 46 80 120 15 22 54 120 180 18 25 63 180 250 20 29 72 NOTE See Figure 7. ISO 23848-1:2009(E) 8 ISO 2009 All rights reservedTable 7 Radial runout of the spline outer ra
43、ce in relation to the axis of the spline shaft Runout tolerance m max. Nominal diameter of the spline outer race, D 1mm Grade Over Up to and including C1 C3 C5 18 5 11 27 18 30 6 13 33 30 50 7 16 39 50 80 8 19 46 80 120 10 22 54 120 180 12 25 63 180 250 14 29 72 NOTE See Figure 8. ISO 23848-1:2009(E
44、) ISO 2009 All rights reserved 9Table 8 Total radial runout of the spline shaft in relation to the axis of the support journals Grade C1 C3 C5 Over 8 12 20 32 50 80 8 12 20 32 50 80 8 12 20 32 50 80 Nominal diameter, d 0mm Up to and including 8 12 20 32 50 80 125 8 12 20 32 50 80 125 8 12 20 32 50 8
45、0 125 Nominal length of the spline shaft mm Over Up to and including Runout tolerances m max. Runout tolerances m max. Runout tolerances m max. 200 26 20 18 18 16 16 16 46 36 34 32 32 30 30 72 59 56 53 53 51 51 200 315 57 32 25 21 19 17 17 89 54 45 39 36 34 32 133 83 71 58 58 55 53 315 400 82 41 31
46、25 21 19 17 126 68 53 44 39 36 34 185 103 83 70 63 58 55 400 500 108 51 38 29 24 21 19 163 82 62 50 43 38 35 236 123 95 78 68 61 57 500 630 65 46 34 27 23 20 102 75 57 47 41 37 151 112 88 74 65 60 630 800 85 58 42 32 26 22 130 92 68 54 45 40 190 137 103 84 71 64 800 1 000 75 52 38 30 24 115 83 63 51
47、 43 170 124 97 79 69 1 000 1 250 65 47 35 28 102 76 59 48 151 114 90 76 1 250 1 600 85 59 43 33 130 93 70 55 190 139 106 86 1 600 2 000 77 54 40 118 86 65 173 128 99 2 000 2 500 68 49 106 78 156 117 2 500 3 150 88 61 134 96 190 143 NOTE See Figure 9. ISO 23848-1:2009(E) 10 ISO 2009 All rights reserv
48、ed6 Shapes and dimensions For ball splines, the nominal diameter of the spline shaft and the shape and boundary dimensions of various spline outer races are given in Annex A. 7 Test methods 7.1 Test environment Use 20 C as the standard temperature condition specified in ISO 554, with the tolerance s
49、pecified as class 15. 7.2 Groove twist With the spline shaft fixed at the support journals and the test dial indicator placed on the side surface of the key of the outer race, or on the notched side surface of the measuring attachment mounted on the spline outer race perpendicular to the shaft axis, as shown in Figure 3, apply a suitable torque in one direction to the sp
