1、BRITISH STANDARD BS 5307:1976 Specification for Basic ball-lock punches UDC 621.963BS5307:1976 This British Standard, having been prepared under the directionof The Mechanical Engineering Industry StandardsCommittee, was published underthe authority ofthe Executive Board on 31 March1976 BSI 01-2000
2、The following BSI references relate to the work on this standard: Committee referenceMEE/97 Draft for comment74/73143DC ISBN 0 580 08719 0 Co-operating organizations The Mechanical Engineering Industry Standards Committee, under whose supervision this British Standard was prepared, consists of repre
3、sentatives from the following Government departments and scientific and industrial organizations. Associated Offices Technical Committee Association of Consulting Engineers Association of Hydraulic Equipment Manufacturers Ltd Association of Mining Electrical and Mechanical Engineers British Compress
4、ed Air Society British Electrical and Allied Manufacturers Association British Gas Corporation British Gear Manufacturers Association British Internal Combustion Engine Manufacturers Association British Mechanical Engineering Confederation British Pump Manufacturers Association British Steel Corpora
5、tion British Steel Industry Crown Agents for Oversea Governments and Administrations Department of the Environment Department of Industry Department of Trade Electricity Supply Industry in England and Wales Engineering Equipment Users Association Federation of Manufacturers of Construction Equipment
6、 and Cranes Health and Safety Executive (HM Factory Inspectorate) Institution of Gas Engineers Institution of Heating and Ventilating Engineers Institution of Mechanical Engineers* Institution of Plant Engineers Institution of Production Engineers* London Transport Executive Machine Tool Trades Asso
7、ciation Ministry of Defence National Coal Board National Engineering Laboratory Department of Trade Process Plant Association Railway Industry Association of GreatBritain Royal Institute of British Architects Society of Motor Manufacturers and Traders* Telecommunication Engineering and Manufacturing
8、 Association The organizations marked with an asterisk in the above list, together with the following, were directly represented on the committee entrusted with the preparation of this British Standard. Amalgamated Union of Engineering Workers British Power Press Manufacturers Association Engineerin
9、g Industries Association Gauge and Tool Makers Association Amendments issued since publication Amd. No. Date of issue CommentsBS5307:1976 BSI 01-2000 i Contents Page Co-operating organizations Inside front cover Foreword ii 1 Scope 1 2 References 1 3 Nomenclature 1 4 Material 1 5 Hardness 1 6 Markin
10、g 1 Figure 1 Terminology 2 Table 1 Basic ball-lock punches, light and heavy duty 3 Table 2 Basic ball-lock light duty perforating punch, round 4 Table 3 Basic ball-lock light duty perforating punch blank, round 5 Table 4 Basic ball-lock light duty pilot punch, round 5 Table 5 Basic ball-lock light d
11、uty ejector perforating punch, round 6 Table 6 Basic ball-lock light ejector perforating punch blank, round 7 Table 7 Basic ball-lock light duty perforating punch, oblong 8 Table 8 Basic ball-lock light duty perforating punch, square 8 Table 9 Basic ball-lock light duty perforating punch, rectangula
12、r 9 Table 10 Basic ball-lock light duty ejector perforating punch, oblong 10 Table 11 Basic ball-lock light duty ejector perforating punch, square 11 Table 12 Basic ball-lock light duty ejector perforating punch, rectangular 12 Table 13 Basic ball-lock heavy duty perforating punch, round 13 Table 14
13、 Basic ball-lock heavy duty perforating punch blank, round 14 Table 15 Basic ball-lock heavy duty pilot punch, round 14 Table 16 Basic ball-lock heavy duty ejector perforating punch, round 15 Table 17 Basic ball-lock heavy duty ejector perforating punch blank, round 16 Table 18 Basic ball-lock heavy
14、 duty perforating punch, oblong 17 Table 19 Basic ball-lock heavy duty perforating punch, square 17 Table 20 Basic ball-lock heavy duty perforating punch, rectangular 18 Table 21 Basic ball-lock heavy duty ejector perforating punch, oblong 19 Table 22 Basic ball-lock heavy duty ejector perforating p
15、unch, square 20 Table 23 Basic ball-lock heavy duty ejector perforating punch, rectangular 21 Publications referred to 22BS5307:1976 ii BSI 01-2000 Foreword This British Standard has been prepared under the authority of the Mechanical Industry Standards Committee. This standard is one of a series fo
16、r interchangeable punches and accessories for precision stamping dies. It comprises a group of punches primarily intended for use in various stamping dies, as built by die makers, for long-run production of specific and individual metal parts in many different kinds of punch presses. Retention of th
17、ese punches requires precision, ball-lock retainers incorporating a spring loaded hardened retainer ball in an angular hole which locks into a detent provided in the punches. The punch can normally be released from the retainer allowing punch replacement without dismounting the retainer. An examinat
18、ion of existing practice in several countries was made prior to development of this standard. Metric modules and engineering systems are incorporated, such as the ISO system for preferred numbers and limits and fits. The functional requirements and economy of usage and punch manufacturing were also
19、considered. Certification. Attention is drawn to the certification facilities described on the inside back cover of this standard. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Comp
20、liance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1 to22, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have
21、had amendments incorporated. This will be indicated in the amendment table on the inside front cover.BS5307:1976 BSI 01-2000 1 1 Scope This British Standard specifies dimensions for basic ball-lock light and heavy duty punches. Light duty interchangeable punches are standard in round, oblong, square
22、 and rectangular shapes with punches available in6.3mm to25.0mm overall diameter shank sizes. Size of the locking ball in the retainer, ranges from6.0mm to10.0mm diameter. The light duty series will pierce up to3.2mm stock. Heavy duty interchangeable punches are standard in round, oblong, square and
23、 rectangular shapes, with punches available in13.0mm to32.0mm overall diameter shank sizes. Size of the locking ball in the retainer is12.0mm diameter. NOTEThe heavy duty series generally will pierce up to9.0mm stock in all but a few of the larger sizes. 2 References The titles of the British Standa
24、rds referred to in this standard are listed on the inside back cover. 3 Nomenclature For the purposes of this British Standard the following nomenclature applies. 3.1 punch. The male force element of a stamping die that contacts the stock to perforate, bend, draw or shape the desired work piece. It
25、generally consists of a working end and a retaining portion. 3.2 working end (point). The working end produces the desired hole, form, or shape in the part. In the case of a perforating punch, the point shape is constant for a length to provide for passage through the stock and for sharpening. The p
26、oint shape is blended into the shank by a smooth radius (radii) tangent to the point shape to resist fatigue in transmitting the punching forces to the shank. 3.3 retaining portion (shank). The shank is cylindrical to fit a round hole in the punch retainer. The fit of the shank to the retainer hole
27、provides the location of the punch (relative to other punches) in the stamping die. The forces applied to the punch are transmitted by the shank to the retainer and the retainer backing plate or punch holder. 3.4 ball seat. The locking detent in the shank provides the locking and alignment function
28、of the ball-lock punch. The ball in the retainer fits into this area to provide the retention of the punch in the retainer. When the ball in the retainer is forced back from the detent, the punch is free to be removed from the retainer and die. The ball seat also serves to radially locate the punch
29、in respect to the retainer and other punches in the die. Ball-lock punches are divided into two basic categories: light and heavy duty. The ball seat size determines the classification of these two categories. Light duty punches are intended for light to moderate stampings. Thick materials require t
30、he heavy duty punch ranges. 4 Material Ball-lock punches complying with the requirements of this British Standard shall be manufactured from steel complying with the requirements ofBS4659 or from any steel having equivalent or better mechanical properties. 5 Hardness The scale and hardness value of
31、the material used for the point and shank (seeTable 2 toTable 23) shall be60HRC to63HRC complying with the requirements ofBS891. 6 Marking Ball-lock punches shall be plainly and indelibly marked with the following. a) The number of this British Standard i.e.BS5307. b) The manufacturers name or trade
32、 mark.BS5307:1976 2 BSI 01-2000 Figure 1 TerminologyBS5307:1976 BSI 01-2000 3 Table 1 Basic ball-lock punches, light and heavy duty Light duty punch Heavy duty punch D A D A Diameter of punch shank Ball diameter Diameter of punch shank Ball diameter 6.3 6.0 13.0 16.0 20.0 25.0 32.0 12.0 10.0 13.0 16
33、.0 8.0 20.0 25.0 8.0 All dimensions are in mm.BS5307:1976 4 BSI 01-2000 Table 2 Basic ball-lock light duty perforating punch, round Nominal shank Diameter D Range of Point P Point length B Overall length L Tolerance Tolerance +0.01 0.00 Tolerance +1.5 0.0 Tolerance +1.0 0.0 h5 a 6.3 1.6 to6.2 13.0 5
34、0 56 63 71 80 10.0 3.2 to9.9 16.0 50 56 63 71 80 13.0 5.0 to 12.9 19.0 50 56 63 71 80 16.0 8.0 to 15.9 25.0 50 56 63 71 80 20.0 12.5 to 19.9 50 56 63 71 80 25.0 18.0 to 24.9 50 56 63 71 80 All dimensions are inmm. Concentricity point P to shank D 0.010 max.total identical radius. a SeeBS4500BS5307:1
35、976 BSI 01-2000 5 Table 3 Basic ball-lock light duty perforatingpunch blank, round Table 4 Basic ball-lock light duty pilot punch, round NOTEDimensions are the same as inTable 2 unless otherwise shown Nominal shank Diameter D Overall length L Tolerance Tolerance +1.0 0.0 h5 6.3 50 56 63 71 80 10.0 5
36、0 56 63 71 80 13.0 50 56 63 71 80 16.0 50 56 63 71 80 20.0 50 56 63 71 80 25.0 50 56 63 71 80 All dimensions are inmm. NOTEDimensions are the same as inTable 2 unless otherwise shown. Nominal shank diameter D Range of point P Point length B Nominal length L Tolerance Tolerance +0.01 0.00 Tolerance +
37、1.5 0.0 Tolerance +1.0 0.0 h5 6.3 1.59 to6.20 13.0 50 56 63 71 80 10.0 3.19 to9.90 16.0 50 56 63 71 80 13.0 4.99 to 12.90 19.0 50 56 63 71 80 16.0 7.99 to 15.90 25.0 50 56 63 71 80 20.0 12.49 to 19.90 50 56 63 71 80 25.0 17.99 to 24.90 50 56 63 71 80 All dimensions are inmm.BS5307:1976 6 BSI 01-2000
38、 Table 5 Basic ball-lock light duty ejector perforating punch, round NOTEDimensions are the same as inTable 2 unless otherwise shown. Nominal shank diameter D Range of point P Point length B F min. Overall length L Tolerance Tolerance +0.01 0.00 Tolerance +1.5 0.0 Tolerance +1.0 0.0 h5 6.3 1.6 to6.2
39、 13.0 14.0 50 56 63 71 80 10.0 3.2 to9.9 16.0 17.0 50 56 63 71 80 13.0 5.0 to 12.9 19.0 20.0 50 56 63 71 80 16.0 8.0 to 15.9 25.0 26.0 50 56 63 71 80 20.0 12.5 to 19.9 50 56 63 71 80 25.0 18.0 to 24.9 50 56 63 71 80 All dimensions are inmm.BS5307:1976 BSI 01-2000 7 Table 6 Basic ball-lock light ejec
40、tor perforating punch blank, round NOTEDimensions are the same as inTable 2 unless otherwise shown. Nominal shank diameter D F min. Overall length L Tolerance Tolerance +1.0 0.0 h5 6.3 14.0 50 56 63 71 80 10.0 17.0 50 56 63 71 80 13.0 20.0 50 56 63 71 80 16.0 26.0 50 56 63 71 80 20.0 50 56 63 71 80
41、25.0 50 56 63 71 80 All dimensions are in mm.BS5307:1976 8 BSI 01-2000 Table 7 Basic ball-lock light duty perforating punch, oblong Table 8 Basic ball-lock light duty perforating punch, square NOTEDimensions are the same as inTable 2 unless otherwise shown. Nominal shank diameter D Range of point Po
42、int length B Overall length L Tolerance Tolerance Tolerance +1.5 0.0 Tolerance +1.0 0.0 h5 P max. W min. 6.3 6.2 1.6 13.0 50 56 63 71 80 10.0 9.9 3.2 16.0 50 56 63 71 80 13.0 12.9 5.0 19.0 50 56 63 71 80 16.0 15.9 6.3 25.0 50 56 63 71 80 20.0 19.9 8.0 50 56 63 71 80 25.0 24.9 10.0 50 56 63 71 80 All
43、 dimensions are in mm. Any flat on a shaped punch shall not exceed0.02 total indicated radius within the shank diameter in relationship to the ball seat. Concentricity: point to shank,0.02max.total indicated radius. NOTEDimensions are the same as inTable 2 unless otherwise shown. Nominal shank diame
44、ter D Range of point P Point length B Overall length L Tolerance Tolerance Tolerance Tolerance h5 0.01 +1.5 0.0 +1.0 0.0 6.3 2.0 to4.4 13.0 50 56 63 71 80 10.0 3.2 to7.0 16.0 50 56 63 71 80 13.0 5.0 to9.1 19.0 50 56 63 71 80 16.0 6.3 to 11.2 25.0 50 56 63 71 80 20.0 8.0 to 14.1 50 56 63 71 80 25.0 1
45、0.0 to 17.6 50 56 63 71 80 All dimensions are in mm. Any flat on a shaped punch shall not exceed0.02 total indicated radius within the shank diameter in relationship to the ball seat. Concentricity: point to shank,0.02 max.total indicated radius.BS5307:1976 BSI 01-2000 9 Table 9 Basic ball-lock ligh
46、t duty perforating punch, rectangular NOTE 1Dimensions are the same as inTable 2 unless otherwise shown. NOTE 2P (larger dimension) should be calculated to stay within the limiting diameter (G max.)for a given W dimension. Nominal shank diameter D Range of point Point length B Overall length L Toler
47、ance Tolerance Tolerance Tolerance h5 G max. W min. +1.5 0.0 +1.0 0.0 6.3 6.2 1.6 13.0 50 56 63 71 80 10.0 9.9 3.2 16.0 50 56 63 71 80 13.0 12.9 5.0 19.0 50 56 63 71 80 16.0 15.9 6.3 25.0 50 56 63 71 80 20.0 19.9 8.0 50 56 63 71 80 25.0 24.9 10.0 50 56 63 71 80 All dimensions are in mm. Any flat on
48、a shaped punch shall not exceed0.02 total indicated radius within the shank diameter in relationship to the ball seat. Concentricity: point to shank,0.02 total indicated radius.BS5307:1976 10 BSI 01-2000 Table 10 Basic ball-lock light duty ejector perforating punch, oblong NOTEDimensions are the sam
49、e as inTable 2 unless otherwise shown. Nominal shank diameter D Range of point Point length B F min. Overall length L Tolerance Tolerance Tolerance +1.5 0.0 Tolerance +1.0 0.0 h5 P max. W min. 6.3 6.2 1.6 13.0 14.0 50 56 63 71 80 10.0 9.9 3.2 16.0 17.0 50 56 63 71 80 13.0 12.9 5.0 19.0 20.0 50 56 63 71 80 16.0 15.9 6.3 25.0 26.0 50 56 63 71 80 20.0 19.9 8.0 50 56 63 71 80 25.0 24.9 10.0 50 56 63 71 80 All dimensions are in mm. Any flat on a shaped punch shall not exceed
