Presentation of the Bohle AG about Industrial Glass Cutting Technology at GLASSTECH ASIA 2017

Size: px

Start display at page:

Download "Presentation of the Bohle AG about Industrial Glass Cutting Technology at GLASSTECH ASIA 2017"

Bathsheba Hill
5 years ago
Views:

1 Presentation of the Bohle AG about Industrial Glass Cutting Technology at GLASSTECH ASIA

2 This is Bohle. The Bohle Group was founded in 1923 is family-owned in the third generation is a leading manufacturer and supplier of tools, machines and accessories for glass processing and glass finishing has over 300 employees at 13 locations 2

3 Bohle is There Our focus is on glass - But that's not all! Glass has been the focus of Bohle's activities since the founding of the company. But many of our products also find applications in other sectors. For example, products from the vacuum technology sector are also used in stoneworking, automobile manufacturing as well as other industrial enterprises - as standard products or as customized solutions. 3

Full Range One Supplier The Bohle modular principle The full product range offers everything that the glass professional needs in his daily work, all from

4 Full Range One Supplier The Bohle modular principle The full product range offers everything that the glass professional needs in his daily work, all from a single source. No matter what challenges you are faced with - the Bohle modular system offers you the elements that can advance you and your business. 4

5 Product Divisions In the founding years, the Bohle product range consisted of cutting wheels for glass cutters. Today it has grown to ten product divisions offering practically everything required for working with glass in the trade and industry. Manual Cutting Technology Automatic Glass Cutting Handling Glass Bonding Grinding, Drilling, Sawing Fittings Machinery Glazing Surface Technology 5

6 Trademarks World's largest range of products for glass cutting and breaking Lifting and carrying products from pump-activated suction lifters to industrial, quality lifting systems with a load capacity of several metric tons Special glass cutters as well as a comprehensive range of diamond tools for smaller machines From UV adhesives to positioning and dispensing aids: all the products needed to produce high quality, lasting glass bonds 6

7 Complete Solutions from One Source High precision cutting wheels made of carbide or PCD Top quality wheel holders made of plastic or steel Carbide axles for high-speed cutting Customer-specific shapes and grinds OEM for well-known cutting machine manufacturers Customised solutions on the spot 7

8 Decades of Experience Core Competence Cutting Technology Silberschnitt is one of the most important brand names in the field of flat glass cutting. A long tradition in glass cutting and high standards in production quality justify the strong position in the European market First cutting wheel for glass cutting 1933 First manual glass cutter with the brand name Silberschnitt 1952 Carbide cutting wheels for automatic cutting 2001 Cutting wheels made of polycrystalline diamond (PCD) 2006 Cutmaster Gold wheels with 10-fold service life 2007 Cutmaster Platinum microstructured wheels for high precisionthin glass cutting by significant reduction of edge damaging 8

9 Glass Cutting - Glass Breaking What happens when you cut glass? By scoring the glass surface, tensions are transmitted into the glass which can then be broken by bending it in a controlled manner either by hand or with glass breaking pliers Only when using an appropriate tool, it is guaranteed that the score is broken precisely at the desired place. 9

10 Required cutting force for different cutting angles Obtuse angles have a larger contact area than acute angles and therefore require a higher cutting force Penetration depth max. 0,2 mm 10

11 Compressive stress in the middle of the glass thickness Upper glass edge Penetration depth max. 0,2 mm Lower glass edge 11

12 Effects when cutting Cutting edge Shatter area of score Shatter area of score Side wings Cutting line Old score Fresh score Crack depth Accompanying cracks Glass Quelle: H.Jebsen-Marwedel und K.von Stösser Glastechnische Berichte 1939, Crack depth Lateral crack Inner tension 12

Cutting Technology Today Technology Bohle has been developing

different applications are produced in the company-owned

13 Cutting Technology Today Technology Bohle has been developing and producing complete solutions for cutting machines for many years. In cooperation with customers, cutting wheels for many different applications are produced in the company-owned Research and Development Centre. One of the latest developments is the structured cutting wheel with extraordinarily long service life. 13

14 Characteristic of grinds (roughness values) Active Basic Contact Plus 14

15 Cutting Glass Manual Cutting Automatic Cutting Picture IHegla Picture IHegla Picture Intermac Picture Lisec 15

16 Choosing the right glass cutter, holder and cutting wheel depending on the glass thickness and type of cut (straight or shaped cut) Manual Cutting Choice of glass cutter Handling, function, appearance Automatic Cutting Existing cutting head Selection of wheel holder 16

17 Online Cutting / Offline Cutting Depending on the existing cutting head Selection of wheel holder (insert) 17

18 It all comes down to the wheel!! Carbide wheels are made of especially selected carbide ymaterial and guarantee a long service life For the use in machines, carbide wheels are available in different sizes, thicknesses and cutting angles Excellent performance on specialized machinery Each cutting wheel is subject to careful inspection 18

19 Types of Cutting wheels Tungsten Carbide PCD Polycristalline Diamond 19

20 Online Cutting Float production Down drow process Up drow process Glass Cutting Process Offline Cutting Automotive Cutting laminated glass Standard cutting table 20

21 Online cutting Picture Grenzebach / Bottero 21

22 Pillar posts for float lines Pillar posts to fit plastic clips are also available from Bohle 22

23 Popular float lines in the marked Grenzebach er Bottero L er Iscan L Triumph, Tuscheng and other er 23

24 Automotive cutting Picture Benteler Picture Bystronic 24

25 Automotive Application Different type of machines in the market Bystronic Benteler Bando Olbricht

26 Cutting of laminated glass Picture Lisec 26

27 Cutting on Standard Cutting Tables Picture Lisec Picture Bystronic Picture Macotec Picture Intermac 27

28 Typical result, incorrect break 28

29 Typical result, incorrect break 29

30 Typical result, incorrect break 30

31 Typical result, incorrect break 31

32 Typical result, incorrect break Oversize for grinding process will be required! Cost for grinding will increase! 32

33 Correct cutting application, perfect break Time saving for grinding > cost saving!! 33

34 Correct cutting application, perfect break Perfect breaking edge > cost saving!! 34

35 Correct cutting application, perfect break 35

Article No. Cutting wheels - at a glance Dimensions in mm Outer Ø Thickness Inner Ø Tolerances 06 2,5 0.65 0.80 66 3.0 0.65 0.80 05 3.0 1.00 1.30 04 4.0 1.00 1.30 12 4.1 1.08 1.42 02 5.0 1.00 1.30 03 5.

36 Article No. Cutting wheels - at a glance Dimensions in mm Outer Ø Thickness Inner Ø Tolerances 06 2, If you need special tolerances, we can manufacture these for you on request 36

37 Cutting wheels - at a glance Wheel type 03, 12 and 02 Any kind of angle can be delivered in packing unit 10 and 100 pc 37

38 Important Parameters when cutting glass Shape of the cut Wheel diameter Cutting angle Cutting force Cutting speed Cutting fluid Type of Glass 38

39 Guidelines for choosing the right cutting angle Straight cuts on standard cutting tables Shaped cuts on standard cutting tables Open cuts for automotive process 39

40 Guidelines for choosing the right cutting angle For straight cuts Float glass Wheel type 03 Ø 5,6 x 1,08 x Ø 1,42 mm Glassthickness Cutting angle Grinding 0,8-1,0 mm 110 Basic 1,0-1,5 mm 120 Basic 1,5-2,0 mm 127 Basic 3,0-4,0 mm 135 Active 5,0-8,0 mm 145 Active 10 mm 150 Active 12 mm 155 Active 15 mm 155 Active 19 mm 160 Active 40

41 Guidelines for choosing the right cutting angle For shaped cuts When cutting shapes, a smaller wheel diameter should be chosen in general, e.g. type 12, (Ø 4,1 mm) for a glass thickness up to 8 mm. For 10 mm glass thickness or more, wheel type 03, (Ø 5,6 mm) is recommended. Glassthickness Angle Grinding 0,8-1,0 mm 115 Basic 1,0-1,5 mm 125 Basic 1,5-2,0 mm 130 Basic 3,0-4,0 mm 145 Active 5,0-8,0 mm 155 Active 10,0 mm 158 Active 12,0 mm 160 Active 15,0 mm 163 Active mm 165 Active 41

42 Guidelines for choosing the right cutting angle For open cuts To obtain an open cut, a smaller wheel diameter should be chosen in general, e.g. type 12, (Ø 4,1 mm) for a glass thickness up to 8 mm. For 10 mm glass thickness wheel type 03, (Ø 5,6 mm) is recommended. Glassthickness Angle Grinding 2,0 mm 148 Active 3,0 mm Active 4,0 mm Active 5,0 mm Active 6,0 mm 160 Active 8,0 mm 163 Active 10,0 mm 163 Active 42

43 Lifespan of a wheel Lifetime in km Plastik Clip Metal Holder Metal Holder Plastik Clip Lifetime in km

44 Choosing the right cutting angle: Following basic rules apply The thinner the glass, the more acute (sharp) the cutting angle should be ( ) The thinner the glass, the finer the grind The thinner the glass and the more acute the cutting angle, the lower the required cutting pressure (60 N 10 N) 44

45 Vice Versa: The thicker the glass, the more obtuse (blunt) the cutting angle aashould be ( ) The thicker the glass, the coarser the grind should be The thicker the glass and the more obtuse the cutting angle, bbthe higher the required cutting pressure. (60 N 250 N) 45

46 Polarization screen photo of a glass edge Snapshot right after cutting and holding time Glass thickness 8 mm Glass thickness 8 mm Glass thickness 8 mm 145 F = 35 N 145 F = 35 N after 15 min 145 F = 35 N after 30 min 46

47 Polarization screen photo of a glass edge Snapshot right after cutting. With different cutting angles and corresponding cutting pressure. Glass thickness 8 mm Glass thickness 8 mm Glass thickness 8 mm 120 F= 25 N 145 F= 35 N 157 F= 150 N 47

Edge quality using the same cutting angle but

with good breaking appearance and only smallest

cutting edge with prominent notches and break-outs

48 Edge quality using the same cutting angle but different cutting force (straight cutting) Clean edge with good breaking appearance and only smallest notches caused by the cutting wheel Low quality cutting edge with prominent notches and break-outs Very bad quality cutting edge with prominent notches, break-outs and scallops 48

Cutting angle to sharp, improvement only with blunter cutting angle and higher

49 Setup for the cutting machine, best breaking performances with the correct cutting angle Incorrect break (152 6 mm Glass) Excellent break (156 6 mm Glass) Cutting angle to sharp, improvement only with blunter cutting angle and higher cutting force Perfect rectangular edge easy work in the following grinding process 49

50 Positive effects when using cutting fluid The cutting fluid lubricates the cutting wheel at the axle and the sides. The smoother the run of the wheel, the better the quality of the cut. The cutting fluid penetrates into the smallest micro-fissures and stabilizes the built-up tensions for a longer period of time. By wetting the cutting wheel with cutting fluid (with machines by continuous flushing), part of the glass dust is bound and flushed away. The cutting fluid binds small glass chips and stops them from moving onto the glass surface scratching the same. 50

51 Development of fissure after holding time a ) 2 minutes b) 4 minutes c) 6 minutes d) 8 minutes e) 10 minutes 51

52 Polarization screen photo of a glass edge Snapshot right after cutting and holding time Side wings Glasdicke 8 mm Glasdicke 8 mm Glasdicke 8 mm 145 F = 35 N 145 F = 35 N after 15 min 145 F = 35 N after 30 min 52

53 Latest Developments of Bohle Cutmaster Platinum The perfect solution for glass cutting Precise glass penetration perfect edge quality. 53

54 Competitive Comparison What is different compared to standard cutting wheels? This new cutting wheel achieves excellent cutting results due to its unique microstructure. The special structure displays a continuously sharp cutting edge over the entire circumference across the peaks as well as the recess areas. 1:500 1:

55 Penetration in the glass by Cutmaster Platinum Unit : Micron 55

56 Cutting Wheels in Comparison Cut Quality Cutting pattern of the fissure at a cutting pressure of 12 N. 1:200 1:200 Silberschnitt Cutmaster Platinum Standard Tungsten Carbide 56

57 Cutting Wheels in Comparison Presentation of achieved Fractures Appearance of fissures on a 1.1 mm thin glass panel mm 0.03 mm 1:60 1:60 1:60 1:20 1:20 1:20 Silberschnitt Cutmaster Platinum Standard Tungsten Carbide 57

of 145.. 0.020 mm 0.034 mm 1:60 0.10 mm 1:60 0.

58 Cutting Wheels in Comparison Presentation of achieved Fractures Appearance of demmages in 8 mm float glass using a cutting angle of mm mm 1: mm 1: mm 1:60 Silberschnitt Cutmaster Platinum 1:20 Standard Tungsten Carbide 1:60 58

$Close-up of the different fractures on 8 mm float glass$ using a cutting angle of 145.

59 Competitive Comparison Presentation of achieved fissures Close-up of the different fractures on 8 mm float glass using a cutting angle of :500 1:750 1:500 1:750 Silberschnitt Cutmaster Platinum Normal Tungsten Carbide 59

Precise penetration into the glass. Minimal damage of the cutting edge.

60 Competitive Comparison Close-up Fissures - Cutmaster Platinum Highly accurate cutting pattern without splinter formation. Precise penetration into the glass. Minimal damage of the cutting edge. Regular, controlled intersection cuts in cutting direction mm 1:750 1:1000 1:500 60

Serrated cutting edge. Erratic cutting fissure.

61 Competitive Comparison Close-up Fissures - Tungsten Carbide Wheel Regular but rough cutting pattern. Serrated cutting edge. Erratic cutting fissure. Severe damage of cutting edge. Excessive splinter formation mm 1:500 1:

62 Applications of Cutmaster Platinum Floatglass Straight cutting mm Shape cuts mm Special Glass Types Medical Glass Optical Glass Straight cutting of borosilicate glass up to 25 mm Straight cutting of diverse special glass type Shape cuts over diverse special glass from mm Thinglass Shape cuts mm Straight cutting mm 62

63 Application cross cut, standard cutting wheel scale up 60 x 63

64 Application cross cut, Cutmaster Platinum scale up 60 x 64

65 Application cross cut, Cutmaster Platinum scale up 250 x scale up 750 x 65

66 Applications of Cutmaster Platinum Cutmaster Platinum Standard Cutmaster Platinum Standard 66

67 Applications of Cutmaster Platinum CMP cutting edge Standard cutting edge 67

68 CMP cutting edge Standard cutting edge Applications of Cutmaster Platinum 68

69 Comparison CMP and standard wheels Side wings No Side wings No splinters (glass chips) 69

70 Approved applications of Cutmaster Platinum Application Glass Thickness Typ of Wheel Float / Borofloat Substrate 0,5-1,2 mm 66B125P, 66B130P Float / Borofloat Substrate 0,5-1,2 mm 66B120P D 263 Substrate 0,05-0,21 mm 66B100P, 66B 110P Borofloat Offline straight cutting 3-25 mm 66B125-66B140 Float Offline straight cutting 3-19 mm 03A000P*

71 Approved applications of Cutmaster Platinum Application Glass Thickness Typ of Wheel Borofloat Substrate 1,1 mm 66B110P Borofloat Offline straight cutting 5-7 mm 66B125, 66B135 Solarglass Solar-Panels 3-4 mm 66B125P Schott B 270 Offline straight cutting 0,7-10 mm 66B125P Ceran / Neoceran Offline straight cutting 3-6 mm 66B125P / 12A135P Quarzglass Tubes 2 mm 66B140P 71

72 Approved applications of Cutmaster Platinum Application Glass Thickness Typ of Wheel Float Offline straight cutting 1,6-2,5 mm 66A135P Float Online 4-8 mm 12A135P, 12A145P Float Substrate 1,2 mm 66B120P, 85D120P Float Substrate 1,2 mm 66B120, 66B125P, 66B135P 72

73 Advantages at a glance from Cutmaster Platinum Excellent edge quality Minimal cutting force (thin glass cutting) Minimal splintering Longer service life Dry cutting Improved edge stability 73

74 Influences of cutting force dependent on the trim 74

75 Guidelines for choosing the right cutting angle in straight cutting CMP Cutmaster Platinum Application Glass thickness CMP application standard 1,5-2,5 mm ,6-3,5 mm mm mm mm mm mm mm

price, colour-coded Disadvantages: Deficient precision Axle can move

76 Choosing the wheel holder Plastic wheel holders for float glass cutting online as well as for cutting tables offline Advantages: Low price, colour-coded Disadvantages: Deficient precision Axle can move out the holder Inadequate stability when high cutting pressure is required 76

77 Disadvantages: Choosing the wheel holder Metal holders in the automotive industry, standard cutting Advantages: Precise guidance, minimal tolerances, high stability with high cutting pressures Cutting wheels and axles are exchangeable Choosing the optimal wheel diameter. Dry cutting of coated glass panes or panes with a film Cost factor, no color code for the cutting angle 77

78 Position of the wheel in the wheel holder 78

Position of the wheel in the wheel holder BO 438.114 Test pin With the test pin Ø 1.

79 Position of the wheel in the wheel holder BO Test pin With the test pin Ø 1.14 mm it is possible to check the play in the slot dimensions of wheel holders 432.0/ /

80 Automotive Application Other types of machines in the market Bottero, Rohmer & Stimpfig, Billco, AGC, others Suitable System Bohle always has the correct product available 80

81 Automotive Application Silberschnitt Quick Exchange Wheel Holders Standard Version Quick Exchange 81

Automotive Application Silberschnitt Quick Exchange Wheel Holders High precision, minimal tolerances, inherent stability under high cutting pressure Easy

82 Automotive Application Silberschnitt Quick Exchange Wheel Holders High precision, minimal tolerances, inherent stability under high cutting pressure Easy exchange of cutting wheels and axles Optimized cutting wheel diameter Dry cutting of glass with films or other coatings Quick exchange, minimal set-up times 82

83 432.0 / / Wheel holders and corresponding wheels 03Xxxx Ø 5,6 x 1,08 x Ø 1,42 12Xxxx Ø 4,1 x 1,08 x Ø 1,42 Axle F Ø 1,39 x 4,2 83

Wheel holders and suitable wheels for thinn glass 432.6 432.3 66Xxxx Ø 3,0 x 0,65 x Ø 0,80 Axle 496.

84 Wheel holders and suitable wheels for thinn glass Xxxx Ø 3,0 x 0,65 x Ø 0,80 Axle Ø 0,80 x 4,2 06Xxxx Ø 2,5 x 0,65 x Ø 0,80 05Xxxx Ø 3,0 x 1,00 x Ø1,30 Axle Ø1,30 x 4,2 84

Wheel holders and suitable wheels 422.0 422.

422 Ø1,39 x 9,0 12Xxxx Ø 4,1 x 1,08 x Ø1,42

85 Wheel holders and suitable wheels Xxxx Ø 5,6 x 1,08 x Ø1,42 Axle Ø1,39 x 9,0 12Xxxx Ø 4,1 x 1,08 x Ø1,42 63Xxxx Ø 6,0 x 3,00 x Ø1,60 Axle Ø1,60 x 9,0 85

86 Module complete assembled 432.XXX1 432.XXX2 432.XXX3 432.XXX6 Wheel type03 Wheel type12 Wheel type 05 Wheel type 66 Ø 5,6 x 1,08 x Ø 1,42 Ø 4,1 x 1,08 x Ø 1,42 Ø 3,0 x 1,00 x Ø 1,30 Ø 3,0 x 0,65 x Ø 0,80 Dimension in mm 86

87 Available wheel holders (inserts) Completely assembled Following assembled inserts with cutting angle insription are available wheel type 03 Ø 5,6 x 1,08 x Ø 1,42 cutting angle 135 Dimesions in mm wheel type 12 Ø 4,1 x 1,08 x Ø 1,42 cutting angle

88 Advantages of the Bohle Technology Compatible» Can be used on all machines «Smaller wheel diameter» Less cutting pressure and excellent edge quality «Quick exchange wheel holders» Shorter machine downtime «88

89 References Silberschnitt as OEM Silberschnitt products are used for processing float glass and thin glass. Leading companies of the flat glass industry use Bohle products as OEM. 89

90 Thank you for your attention. Bohle AG Dieselstraße 10 D Haan Peter Pokoern T F peter.pokoern@bohle.de 90

91 Find your next Bohle location. Worldwide. Germany Bohle AG Dieselstraße 10 D Haan T F info@bohle.de Austria Bohle GmbH Lemböckgasse 63/2/1 A-1230 Wien T F info@bohle.at UK and Ireland Bohle Ltd. Fifth Avenue Tameside Park Dukinfiled Cheshire SK14 4PP T F info@bohle.ltd.uk Estonia Bohle OÜ Punane EE Tallinn Tel.: Fax: info@bohle.ee 91

92 Find your next Bohle location. Worldwide. France Département français Dieselstraße 10 D Haan T F france@bohle.de Hungary Bohle GmbH - Forgalmazás HU Lemböckgasse 63/2/1 A-1230 Wien T F hungary@bohle.de Italy Bohle Italia s.r.l. Via Cavallotti 28 I Abbiategrasso T F info@bohle.it Netherlands Bohle Benelux B.V. Nieuweweg Noord 314 B-20 NL-3905 LX Veenendaal T F info@bohle.nl 92

93 Find your next Bohle location. Worldwide. Spain Bohle Complementos del Vidrio S.A.U. Mare de Deu de Bellvitge, 312 E L'Hospitalet Barcelona T F info@bohle.es Russia 000 Bohle - Moskau Leninsky Rayon Business Center Rumjanzevo Bldg. 1, Block A, Office 721 A, RU Moscow Tel.: Fax info@bohle.ru Russia 000 Bohle St. Petersburg Ul. Bumazhnaya 9, korp. 1/A Office 422 RU St. Petersburg Tel.: Fax: info@bohle.spb.ru 93

94 Find your next Bohle location. Worldwide. Sweden Bohle Scandinavia AB Pyramidbacken 3 SE Kungens Kurva T F info@bohle.se USA Bohle America, Inc Ballantyne Corporate Place Suite 500 Charlotte, NC T F info@bohle-america.com South Africa Bohle Glass Equipment (Pty) Ltd. Unit 3, Graphite Industrial Park Fabriek Street, Strijdom Park 2125, Gauteng T F info@bohle.co.za 94

Everything for Glass Professionals Company Presentation

Everything for Glass Professionals Company Presentation 1 Bohle is always at the forefront We are working with glass - but that s not all Bohle has been involved with glass since the company was founded.