1、USA STANDARD SPINDLE NOSES USAS B5.9 - 1967 For Tool Room Lathes, Engine Lathes, Turret lathes, and Automatic lathes REAFFIRMED 1986 .- . _. _ _- -_ REAFFIRMED 1998 FOR CURRENT COMMITTEE PERSONNEL PLEASE SEE ASME MANUAL AS-11 American Society of Tool and Manufacturing Engineers Society of Automotive
2、 Engineers National Machine Tool Builders Association The American Society of Mechanical Engineers THE AMERICAN SOCtETY OF MECHANICAL ENGINEERS United Engineering Center 345 East 47th Street New York , N. Y. 10017 USAS 85.9-1967 (R-1972) 12 DECEMBER 1978 ACCEPTANCE NOTICE The above nonGovernment doc
3、ument was adopted on 12 December 1978 and is approved for use by the DoD. The indicated industry group has furnished the clearance required by existing regulation. Copies of the document are stocked by the DoD Single Stock Point, Naval Publications and Forms Center, Philadel- phia, PA 19120 for issu
4、e to DoD activities only. Contractors and industry groups must order directly from ASME, 345 East 47th Street, New York, NY 10017. Title of Document: Spindle Noses for Tool Room Lathes, Engine Lathes, Turret Lathes, and Automatic Lathes Date of Specific Issue Adopted: 1967; Reaffirmed 1972 Releasing
5、 Industry Group: American Society of Mechanical Engineers custodians: ArmY-AL Navy - SH Air Force - 99 Review activities: Navy - SH Air Force - 99 Army - AR, ME User activities: Army - GL Air Force - 99 Military Coordinating Activity: DLA - IP (Project 34GP-0005) No pan of this document may be repro
6、duced in any form, in an electronic retrieval system or otherwise, without the prior written permission of the publisher. THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS Copyright, 0, 1967 by Printed in U.S.A. Fore word T HE first edition of this standard, known as B5.9-1936, was developed by Technical
7、 Committee No. 4 on Spindle Noses of Sectional Committee B5 on the Standardization of Small Tools and Machine Tool Elements. The second edition, known as B5.9-1948, broadened the scope of the standard to include five sizes of Type L spindle noses, two smaller sizes of Types A, B and D spindle noses,
8、 namely, the 2 in. and 3 in., and a new spindle nose larger than the 20 in. for Types A and B, now known as the 28-in. nose. Similar changes were made in the American Standard for Chucks and Chuck Jaws (ASA B5.8). The third edition, known as B5.9-1954, incorporated Unified Screw Threads jointly agre
9、ed upon by the American Standards Association, the British Standards Institution,and the Canadian Standards Association. For thread designations and specifications see USA Standard for Unified and American Screw Threads (USAS Bl.1-1960). Other minor changes were also incorporated to clarify applicat
10、ion of certain tolerances for plug gages, and a new paragraph was added to the text to provide balancing instructions. In the fourth edition, approved by ASA on February 5, 1960 as B5.9-1960, tolerances for length of pilot and depth of pilot holes for the Type A-1 and B-1 spindles were de- creased s
11、lightly to reflect current actual practice in order to reduce the possibility of dis- torting the chuck or face plate when mounted on the spindle. For the same reason, .pilot bore diameters for some sizes of these chucks, and corresponding gage dimensions, were changed to reduce interference between
12、 chuck and spindle pilot diameters. In addition, the method of dimensioning radial hole locations was changed to follow the practice set forth in American Drafting Standards Manual on Dimensioning and Notes (ASA Y14.5-1957) to insure interchangeability. This Revision supersedes ASA B5.9-1960. Master
13、 ring gage inside diameters were slightly increased for some Types A, B and D spindle nose sizes, to coincide with the 1960 master plug gage change made to suit the increased chuck pilot diameters. Counter- bores for socket head screws were also changed to provide clearance for the “1960 Series” cap
14、 screws. Tables showing assembly of face plates to Type A and B spindles were eliminated, and tables and pages renumbered. Tables 35, 36 and 37 in this edition, reflect the 1963 revision of Handbook H28 - Screw-thread Standards for Federal Services, and the recent USA Standard Gages and Gaging for U
15、nified Screw Threads, USAS BU- 1966, in changing “NOT GO threaded plug gages” to “HI thread plug gages” and “NOT GO thread ring gages” to “LO thread ring gages.” Following approval by the USA Standards Committee B5 and the sponsors, the revision was approved by the USA Standards Institute on April 2
16、1, 1967. USA STANDARD This USA Standard is one of nearly 3000 standards approved as American Standards by the American Standards Association. On August 24, 1966, the ASA was reconstituted as the United States of America Standards Institute. Standards approved as American Standards are now desig- nat
17、ed USA Standards. There is no change in their index identification or technical content. UDC 621.941-229.3 111 . Intentionally left blank USA STANDARDS COMMITTEE B5 STANDARDIZATION OF SMALL TOOLS AND MACHINE TOOL ELEMENTS OFFICERS W. H. Seacord, Chairman F. Steel Blackall, Ill, Vice-Chairman t C. T.
18、 Blake, Vice-Chairman Harold Cooper, Vice-Chairman J. E. Rotchford, Vice-Chairman COMMITTEE MEMBERS THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS F. Steele Blackall, Ill, The Taft-Peirce Manufacturing Company, Woonsocket, Rhode Island C. T. Blake, The Warner namely, with 11 tapped holes in the outer
19、bolt circle and 8 tapped holes in the inner bolt circle, equipped with a driving button held in place with a driving screw. 2.4 To clearly identify any spindle nose of Type L, the terminology used should include first - the word “Type,” second - the symbol. indicating the type and size, third - the
20、words USA Standard Spindle Nose.” For example, a “Type LOO USA Standard Spindle Nose” designates the smallest size of Type L nose of the dimensions given on Table 28. 2.5 A detailed description of each type of spindle nose is given below. 2.6 The Type A1 spindle nose is provided with two rows of tap
21、ped holes and a driving button as explained in Tables 1, 2, and 3. The inner row of tapped holes provides means for attaching certain sizes of scroll chucks by the use of socket- head cap screws which pass inside the scroll plate between the chuck jaws as shown in Table 4. The outer row of tapped ho
22、les provides means for attaching face plates, fixtures and other chucks by the use of socket-head cap screws. Table 4 gives the mating dimensions of chucks and face plates. The Type A1 nose is not available in the 2-in., 3-in. and 4-in. sizes. 2.7 The Type A2 spindle nose is the same as Type A1 exce
23、pt that holes in the inner bolt circle are omitted. The Type A2 may be used when the hole in the spindle is so large that there is no space left for the inner bolt circle and where the class of the work which the machine is to do is so restricted that the inner bolt circle is not required. 2.8 The T
24、ype B1 spindle nose is exactly the same as Type A1 except the holes in the outer 1 USA STANDARD bolt circle are clearance holes for through bolts or studs so that chucks or fixtures may be at- tached by the use of bolts or studs passing through the flange and employing nuts on rhe back side of the f
25、lange. The Type B1 nose will take any of the chucks, face plates or fixtures that may be mounted on the Type A1 nose, but the Type B1 necessitates extra overhang from the front spindle bearing of the machine to allow room for the nuts on the back of the flange. The Type B1 nose is provided with the
26、tapped holes in the inner bolt circle exactly like the Type A1 nose. The Type B1 nose is available in seven sizes from 5 in. to 28 in. inclusive, and the dimensions are given in Tables 2 and 3, while Table 4 gives mating dimensions of chucks and face plates which may be attached by socket-head cap s
27、crews or Type B studs. The dimensions of Type B studs are given in Table 14. 2.9 The Type B2 spindle nose is the same as Type B1 except the holes in the inner bolt circle are omitted. The Type B2 spindle is available in ten sizes from 2 in. to 28 in. inclusive, and . the dimensions are given in Tabl
28、es 1, 2, and 3, while the backs of mating chucks, face plates, and fixtures are given in Table 4. 2.10 The Type Dl spindle nose is equipped with three equally spaced clearance holes in the outer bolt circle in sizes 2 in., 3 in., and 4 in., arid six equally spaced clearance holes in the outer bolt c
29、ircle in sizes 5 in. to 20 in. inclusive. Each such hole is provided with a cam, cam spring and other elements as shown on Tables 6, 8, 10, and 12 and as shown in the assembled posi- tion in Table 20. The cams are for the purpose of engaging and locking the cam lock studs mounted in the back of the
30、face plate or chuck as dimensioned in Tables 7, 9, 11, and 13 and shown in assembled position in Table 20. This type of nose is intended for use on machines where the saving of time in changing face plates and chucks is of considerable importance. A por tion of a turn of each of the cams releases th
31、e cam lock studs and allows the instant removal of the chuck or face plate. Similarly, when mounting chucks on the spindle, the chuck can be locked in place very quickly and easily by turning each cam a portion of a turn. Where the construction permits, chucks or face plates may also be mounted on t
32、he Type Dl spindle noses by the use of cam lock nuts as shown on Table 14. The cam lock nuts are first locked in position in the spindle nose with the cams, and the chuck or face plate is then attached to the spindle with socket head cap screws of the proper length as shown in Table 14. 2.11 The Typ
33、e L spindle nose is provided with a long, steep taper for locating and centering chucks and face plates, with a key for driving, and with a flanged nut for holding the chuck or face plate on the spindle. This spindle is avail- able in five sizes and is dimensioned in Tables 28 and 30 and shown in as
34、sembled position in Table 33. Dimensions of the backs of mating chucks and face plates are shown in Table 29. 3. Gages and Gaging for Types A, B, and D, 3.1 Master gages of the ring and plug type are recommended for inspecting the taper pilots of Types A, B, and D spindle noses and the taper holes i
35、n the mating face plates and chucks. Dimensions of such master gages for each size of spindle are given in the accompanying tables. 3.2 The master plug gages, Table 23, are so made that the point at which the taper, if ex- tended, would intersect the flat face, is of dimen- sions B, Table 23. For co
36、nvenience in checking these gages, the table lists the correct dimen- sions over accurate plug gages 0.250 in. in diam eter resting against the flat face. Spindle Noses 3.3 Each of the master ring gages, Table 22, is made so that the dimensions B corresponds with the dimension B of the mating master
37、 plug gage, Table 23, and so that surfaces W and X of the ring gage are a good Prussian blue fit on surfaces Y and Z of the mating plug gage. 3.4 Taper pilots on the spindles may be in- spected with a master ring gage either by using depth gages registering from one face of the gage, or by using fee
38、lers of thickness Y, Tables 1 and 2, or thickness 526, Table 12. Three feelers of minimum dimensions Y or S26 should be used as “go” feelers and three feelers of the maximum dimension Y or S26 should be used as “not go” feelers. These feelers should be approximately equally spaced around the flange.
39、 3.5 The taper hole in chucks and face plates, Table 4 and Table 13, may be inspected either by depth gages or by using the proper size master plug gage, Table 23. The plug gage should fit the taper hole without shake if the surface Y of the plug gage strikes the face of the chuck or face plate and
40、should not stand away from the face of the chuck or face plate more than the amount of the gage clearance Y of Table 4 or P17, Table 13. This gage clearance may be in- 2 SPINDLE NOSES FOR TOOL ROOM LATHES spected with three feelers equally spaced around the flange. 3.6 Micrometer working gages, Tabl
41、es 24, 25, 26, and 27, will be found convenient for manu- facturing spindle noses as well as chucks or face plates. These gages should be set to the proper master ring and plug gage as explained in Tables 24, 25, 26, and 27 and will then read the pilot diameters direct. 4. Gages and Gaging for Type
42、L Spindle Noses 4.1 Table 34 gives dimensions of plug and ring taper gages for inspecting the long taper pilots of Type L spindle noses and for inspecting the long taper holes in mating chucks and face plates. Tolerance B applies to dimension A only. Dimen- sion A is the theoretical diameter of the
43、taper at a plane intersecting the face of the large end of the gage. Tolerance E applies to the rate of taper ody. On all taper plug gages the rate of taper shall not be less than 3% in. per foot, and shall not be more than 3% in. per foot plus E in the length C of the gage. 4.2 The master ring gage
44、s, Table 34, should be a good Prussian blue fit on the long taper of the spindle noses, Table 28, and the face of the gage marked *gage line” in Table 34 should stand away from the flange on the spindle an amount equal to the gage clearance CC, Table 28. This gage clearance may be inspected with “g0
45、” feelers of the minimum amount of the gage clearance CC and with “not go” feelers of the maximum amount of this gage clearance. 4.3 The location of the key and the height of the key in each spindle nose, Table 28, may be inspected by using this same ring gage, Table 34. Dimension N on this ring gag
46、e is made to clear the maximum permissible height G of the key in the spindle nose. The minimum height G, Table 28, may be checked by using the proper feeler between the top of the key and the slot in the ring gage. 4.4 The location and depth of the keyway in the chuck or face plate may be inspected
47、 by means of the “go” and “not go” gage blocks, Table 34. The “go” gage block should fit freely the full depth in the keyway of the plug gage when in- serted in the taper hole in the chuck or face plate. The “not go” gage either should not enter 01 should enter without shake. 4.5 The threads on the
48、draw nuts for Type L spindle noses, Table 30, may be inspected by means of the “go” and “not go” HI thread plug gages, Table 35. The “go” gage should screw into the nut the full distance freely. The “not go” HI gage either should not enter or should screw in without shake. 4.6 The thread on the back
49、s of chucks and face plates for Type L spindle noses, Table 29,. may be inspected with a “go” and “not go” LO thread ring gage, Table 37. The “go” gage should screw on freely all the way while the “not go” LO thread gage either should not start or should be on without shake. 4.7 The “go” and “not go” LO thread ring gages, Table 37, may be checked and set proper ly by means of the setting plugs for thread ring gages, Table 36. 5 Chucks 5.1 The dimensions of standard chucks to fit Types A, B, D and L spindle noses are given by USA Standard Chucks and Chuck Jaws (USAS B5.8-1954, R
