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Berg Clamping systems Tool Clamping - SSKV

Application
Berg SSKV gripper are primarily designed for drawing in and ejecting steep taper tooling provided with retention knobs internationally standardized as per DIN, ANSI, MAS, JIS and ISO which allow fast automatic tool changes. Actuation is mechanical, hydraulic, electro-mechanical
or pneumatic.

Design features
SSKV clamping sets have six collets held by an annular spring which allows a rocking movement for clamping the steep taper tools. During clamping the taper of the centrally positioned drawbolt increases the actuation force, thereby generating a much higher clamping force at the collets. The special tribolic coating guarantees the highest possible
constant clamping force. The clamping set is maintenance free. A locking bolt permits infinitely variable positioning and fixation of the clamping set in the Z axis. No special tools are required for assembly and disassembly.
#workholding

CMM training programme at Chennai

CMM TRAINING PROGRAMME
GMT  training programme that is tailor made for your company. Our experienced instructor will use latest equipment and software to show what your CMM can and cannot do. We offer to train you with your own parts, drawings and inspection tooling to see how usage of CMM can be optimisied. 

TARGET AUDIENCE
Inspection personnel, Engineering personnel, Production personnel who would like to enter into the field of dimensional measurement and CMM programming. Open to companies and and individuals.
Prerequisites: Basic knowledge in the following areas:
Knowledge of Print Reading of drawings with tolerances
Knowledge of Geometric Dimensioning & Tolerancing
Knowledge of Basic Dimensional Measurement Tools
Basic knowledge of PC and Windows
So if you're looking to train your personnel for a refresher/training course on operation of coordinate measuring machine email us at esales@gmt.co.in with complete details of your company and existing CMM.

Pull studs AZB

Application
Pull studs are designed for screwing into steep taper tool shanks, workpiece holders and pallets. In conjunction with SSK grippers they are intended for drawing in and ejecting the above mentioned machine elements. Design features AZB pull studs correspond to the values prescribed in the DIN, ANSI, ISO, MAS and JIS standards with regards to their dimensions, surface quality, hardness and strength values. Abbreviation FS max kN Clamping force Ordering example AZB 40 DIN Delivery scope Pull studs as per data sheet Comments Special designs are available for machine specific applications. #workholding
Pull studs
Technical data
Type d1 -0,1 d2 -0,1 d3 -0,2 d4 g6 d5 d6 +0,1 l1 l2 ±0,1 l3 ±0,1 l4 l5 S -0,1 FS max kN AZB 30/1 DIN 13 9 17 13 M 12 - 44 24 19 15 4 14 10 AZB 40 DIN 19 14 23 17 M 16 7,0 54 26 20 21 4 19 18 AZB 45 DIN 23 17 30 21 M 20 9,5 65 30 23 27 5 24 25 AZB 50 DIN 28 21 36 36 M 24 11,5 74 34 25 30 5 30 35 AZB 60/1 DIN 40 30 52 52 M 30 14,0 90 40 30 37 6 46 70
For modifications all rights reserved
Pull studs
Technical data
Type d1 0 -0,3 d2 0 -0,3 d3 d4 h6 d5 d6 l1 l2 0 -0,3 l3 0 -0,3 l4 l5 0 -0,5 l7 0 -0,5 S FS max kN AZB 30 ISO-B 13,35 9,30 17,0 - 0,5 13 M 12 4,00 34,0 11,80 8,15 17,20 2,75 1,25 14 - 0,27 10 AZB 40 ISO-B 18,95 12,95 22,5 - 1,0 17 M 16 7,35 44,5 16,40 11,15 21,10 3,25 1,75 18 - 0,33 18 AZB 45 ISO-B 24,05 16,30 30,0 - 1,0 21 M 20 9,25 56,0 20,95 14,85 27,05 4,25 2,25 24 - 0,39 25 AZB 50 ISO-B 29,10 19,60 37,0 - 1,0 25 M 24 11,55 65,5 25,55 17,95 29,95 5,25 2,75 30 - 0,65 35 AZB 60/1 ISO-B 37,25 24,95 50,0 - 2,0 32 M 30 14,00 88,0 38,15 27,65 37,00 7,75 3,75 36 - 0,75 70
Pull studs
Technical data
Type α ± 15' d1 -0,1 d2 -0,1 d3 -0,2 d4 h7 d5 l1 l2 -0,1 l3 -0,1 l4 l5 -0,1 l6 l7 R S -0,35 FSmax KN AZB P30T-I 45° 11 7,0 16,5 12,5 M 12 43 23 18,0 16 5 3,5 2,5 2 13 10 AZB P30T-II 30° 11 7,0 16,5 12,5 M 12 43 23 18,0 16 5 3,5 2,5 2 13 10 AZB P35T-I 45° 13 8,5 20,0 12,5 M 12 48 28 22,5 16 5 3,5 2,5 2 17 12 AZB P35T-II 30° 13 8,5 20,0 12,5 M 12 48 28 22,5 16 5 3,5 2,5 2 17 12 AZB P40T-I 45° 15 10,0 23,0 17,0 M 16 60 35 28,0 20 6 4,0 4,0 3 19 18 AZB P40T-II 30° 15 10,0 23,0 17,0 M 16 60 35 28,0 20 6 4,0 4,0 3 19 18 AZB P45T-I 45° 19 14,0 31,0 21,0 M 20 70 40 31,0 24 8 6,0 5,0 4 24 25 AZB P45T-II 30° 19 14,0 31,0 21,0 M 20 70 40 31,0 24 8 6,0 5,0 4 24 25 AZB P50T-I 45° 23 17,0 38,0 25,0 M 24 85 45 35,0 32 10 8,0 5,0 5 30 35 AZB P50T-II 30° 23 17,0 38,0 25,0 M 24 85 45 35,0 32 10 8,0 5,0 5 30 35 AZB P55T-I 45° 32 24,0 48,0 31,0 M 30 115 65 53,0 40 14 11,0 7,0 5 41 50 AZB P55T-II 30° 32 24,0 48,0 31,0 M 30 115 65 53,0 40 14 11,0 7,0 5 41 50 AZB P60T-I 45° 32 24,0 56,0 31,0 M 30 115 65 53,0 40 14 11,0 7,0 5 46 50 AZB P60T-II 30° 32 24,0 56,0 31,0 M 30 115 65 53,0 40 14 11,0 7,0 5 46 50
Type d1 -0,1 d2 -0,1 d3 -0,2 d4 h7 d5 d6 l1 l2 -0,1 l3 -0,1 l4 l5 -0,1 l6 l7 R S -0,35 FS max kN AZB 30JIS 12 8 16,5 12,5 M 12 4,0 43 23,4 18,4 15,6 5 2 3,5 2 13 10 AZB 35JIS 15 11 20,0 12,5 M 12 5,0 44 24,0 19,0 16,0 5 2 3,5 2 17 12 AZB 40JIS 19 14 23,0 17,0 M 16 7,0 54 29,0 23,0 20,0 7 3 5,0 3 19 18 AZB 45JIS 23 17 31,0 21,0 M 20 8,5 60 30,0 23,0 24,0 7 4 5,0 4 24 25 AZB 50JIS 28 21 38,0 25,0 M 24 10,0 74 34,0 25,0 32,0 7 5 5,0 5 30 35 AZB 55JIS 36 27 48,0 31,0 M 30 12,0 98 48,0 36,0 40,0 11 5 8,0 5 41 70 AZB 60JIS 36 27 48,0 31,0 M 30 12,0 98 48,0 36,0 40,0 11 5 8,0 5 41 70
Type α d1 -0,1 d2 -0,1 d3 -0,2 d4 -0,025 d5 l1 l2 -0,1 l3 -0,1 l4 l5 l6 R S -0,1 FS max kN AZB 10JBS-I 15° 6,0 4 8,5 5,5 M 5 20 10,5 7,5 7,5 2,0 1,7 1,0 7 1,2 AZB 10JBS-II 0° 6,0 4 8,5 5,5 M 5 20 10,5 7,5 7,5 2,0 1,7 1,0 7 1,2 AZB 15JBS-I 45° 7,0 5 10,0 7,0 M 6 23 12,0 8,5 9,0 3,0 2,0 1,2 9 1,7 AZB 15JBS-II 0° 7,0 5 10,0 7,0 M 6 23 12,0 8,5 9,0 3,0 2,0 1,2 9 1,7 AZB 20JBS-I 45° 8,5 6 11,0 7,0 M 6 25 14,0 10,0 9,0 3,5 2,2 1,2 9 3,0 AZB 20JBS-II 0° 8,5 6 11,0 7,0 M 6 25 14,0 10,0 9,0 3,5 2,2 1,2 9 3,0 AZB 25JBS-I 45° 10,0 7 12,0 9,0 M 8 28 16,0 11,5 10,0 3,5 2,2 1,6 10 3,0 AZB 25JBS-II 0° 10,0 7 12,0 9,0 M 8 28 16,0 11,5 10,0 3,5 2,2 1,6 10 3,0

Berg Gripper SSKE - KH

						SSK gripper are primarily designed for drawing in and ejecting steep taper tooling provided with retention knobs internationally standardized as per DIN, ANSI, MAS, JIS and ISO which allow fast automatic tool changes. SSK gripper are not only suitable for clamping tools, but also workpieces or workpiece holders and pallets on machining centres milling machines boring machines grinding centres special purpose machines and handling systems Grippers in special designs are available for other shapes in addition to the types for standardized clamping bolts. Actuation is mechanical, hydraulic, electro-mechanical or pneumatic. Design features SSK gripper comprise four clamping segments which are captively connected to the draw bolt to ensure easy assembly. They transfer the clamping force positively from the draw bolt to the retention knob. It is possible to clamp tool shanks of the same steep taper with retention knobs of different standards using different gripper in a uniformly designed spindle. Refer to the following table detailing the assignments. The version SSKS.. was developed for very high spindle rotational speeds. Their external design is identical to that of the SSK version of the same type. Gripper of the series SSK..JBS I(II) are always designed for the high-speed version. In comparison to the very high clamping forces of the SSK, SSKE and SSKF series, the SSKE - KH series are designed in favour of a considerably shorter axial stroke according to the generally common values. For new spindle designs the gripper style SSKF is recommended.. #workholding

Berg Gripper SSKFI

Application SSK gripper are primarily designed for drawing in and ejecting steep taper tooling provided with retention knobs internationally standardized as per DIN, ANSI, MAS, JIS and ISO which allow fast automatic tool changes. SSK gripper are not only suitable for clamping tools, but also workpieces or workpiece holders and pallets on machining centres, milling machines, boring machines, grinding centres, special purpose machines, handling systems Grippers in special designs are available for other shapes in addition to the types for standardized clamping bolts. Actuation is mechanical, hydraulic, electro-mechanical or pneumatic. Design features SSK gripper comprise four clamping segments which are captively connected to the draw bolt to ensure easy assembly. They transfer the clamping force positively from the draw bolt to the retention knob. It is possible to clamp tool shanks of the same steep taper with retention knobs of different standards using different gripper in a uniformly designed spindle. Refer to the following table detailing the assignments.
The version SSKS.. was developed for very high spindle rotational speeds. Their external design is identical to that of the SSK version of the same type. Gripper of the series SSK..JBS I(II) are always designed for the high-speed version. In comparison to the very high clamping forces of the SSK, SSKE and SSKF series, the SSKE - KH series are designed in favour of a considerably shorter axial stroke according to the generally common values. For new spindle designs the gripper style SSKF is recommended.

Berg Clamping systems Tool Clamping - HSH

Application
For HSC workpiece machining the clamping forces according to DIN 69893 are frequently no longer sufficient. The idea to create an extremely rigid connection between the tool and spindle by placing the clamping element directly against the internal spindle contour, reached its design limits, due to the cross sections and surfaces available for the force transmission. With their HSH-gripper, BERG-Spanntechnik have met the requirements for clamping forces notably exceeding the values specified in DIN 69893. HSH-gripper are intended for the clamping of hollow shank tooling with central cooling lubricant supply.

Design features
HSH-gripper consist of six sturdy clamping claws, which, held by means of an annular spring, execute a tilting movement when the hollow shank tooling is changed and removed. During clamping, the centrally arranged draw-bolt transfers the actuation force onto the clamping segments, where it acts as a direct clamping force without further force deviation. The generously dimensioned face of the draw-bolt has been provided for tool ejection. The constructive design of the clamping element offers a large clamping reserve. The internal spindle contour is easy to manufacture.

GMT REPRESENTATIVE IN INDIA FOR BERG SPANNTECHNIK , GERMANY

Berg clamping systems SK-Steep Taper Tooling

TOOL Clamping systems and release systems Depending on the selected clamping set type and the machine requirements complete clamping and chucking systems are available in combination with the various actuation elements. The following chart is provided for the purpose of allocation and selection. The actuation devices are described and depicted in detail in the specific data sheets. Please contact us for more information for clamping and release systems which are not detailed.

Gripper Clamping cylinder, rotating Multi-energy supply, stationary Spindle speed nmax. <4000 rpm <15000 rpm > 15000 rpm Features / Type ESK OHLK OHL SEK SE Clamping Electrical Hydraulic Hydraulic Mechanic Mechanic Releasing Electrical Hydraulic Hydraulic Mechanic Mechanic Spindle bearing relieved Position control Compressed air supply Cooling lubricant supply

Gripper Clamping cylinder, rotating Spindle speed nmax. > 15 000 rpm Features / Type HDZ HLZ HLZE Clamping Mechanic Mechanic Mechanic Releasing Hydraulic Hydraulic Hydraulic Spindle bearing relieved Position control Optional Optional Optional Cooling lubricant supply Optional Optional Optional

GMT Electro-Mechanical Actuators – U

Electro-Mechanical Actuators – U are meant primarily for use on rotating work spindles where there are restrictions on the use of pneumatic or hydraulic rotating cylinders for the actuation of power chucks, expanding mandrels, collets etc.

It can rotate maximum upto 3000 rpm.

GMT - Electro Mechanical Actuator - UF

Electro Mechanical Actuator - UF have been developed as a time saver for quick and efficient clamping and de-clamping of arbors on machines (milling machines, boring machines etc.) which have steep, self-releasing taper on the spindle. 

Where a number of tools are to be used for an operation, GMT EMA enables the work to be completed in a single set-up. Use of this Electro Mechanical Actuator ensures fast and quick change of tool and cuts non-productive time drastically. Since the operation on the work piece is finished in one set-up, in process inventory is reduced.

History of GMT - Our association with M/S. Techno Valves.

This company manufacture different kinds of non ferrous valves for gas industries. They have a number of ACE CNC Lathes fitted with GMT 2 Jaw Power Chucks. Sometime in Feb 2010 our Mr. Mahendran and Mr. Karthikeyan visited them and met Mr. Rohit Behani, Exec. Mfg. & Sales, Techno Valves and created enquiry for  200 mm dia. Power Operated Power Indexing chuck suitable for ACE CNC Lathe. However, in early July 10 customer decided to order for Mazak CNC Lathe Model Quick Turn Star and asked for fresh quotation for 200 mm dia Power Operated Power Indexing chuck. Mr, Sengupta who retired from LMW as GM and joined Mazak India Kolkatta interacted with GMT. Since he had several interactions with GMT during his tenure at LMW,  he understood the products thoroughly and helped GMT, Techno and Mazak   to initiate discussions and sort out several technical issues viz. dedicated Power Pack for Power Operated Power Indexing chuck, hydraulic and electrical circuit and logic write up ( Interfacing for indexing chuck). The details were sent to Mazak Singapore.  Order for  2B 200 Power Operated Power Indexing chuck complete package including Power Pack and all accessories including special jaws was placed upon us on 17^th Aug. 10.

On receipt of the order further finalization of jaw design took place. We had difficulty in one particular component for offering special jaws. We overcame the difficulty and offered modified jaw design. Received Spindle details and the Chuck with accessories were manufactured. Component trials were done on our LMW Rigi 25 CNC Lathe. The chuck with accessories were dispatched on 20^th Feb. 10.

The Mazak Machine was installed in the new factory of Techno Valves and our team visited on 20^th Apr. 10 to commission the chuck. The chuck successfully commissioned with electrical interface with the Mazak Engineer and our Mr. Kandan. Final trials were taken and obtained report from Techno valves that the chuck is working satisfactorily.

About the author : Shri. K Jagannathan - Executive Director – Sales & Marketing, GMT.
Sri.K.Jagannathan is synonymous with lathe chucks in the Indian machine tool industry. He has been with Guindy Machine Tools for over 5 decades. His vast experience and immense knowledge of workholding products is evident in some of the most complex workholding solutions provided by GMT.  

History of GMT - Our association with M/S. Associated Toolings Kolkatta-2

Early Nov. 08 Associated Toolings decided to repeat the order. This time Associated Toolings informed LMW to order for the total package including hydraulic power pack upon GMT. Machine Rigi 25 CNC Lathe.

Certain improvements were requested by Associated Toolings and LMW details are as under.

• Safety Valve for clamping cylinder. 
• Centrifugal Force Compensating.
• Sensing Unit.
• Interfacing with machine controls.

After a detailed discussions with GMT the above features were incorporated in the design. Offer sent by GMT to LMW,  on 28th. Nov. 08. Order received from LMW on 6th Feb. 09. Chuck was dispatched to LMW on 20-03-09. On receipt of the chuck at LMW our team visited and commissioned the chuck including interfacing with CNC controls so that the machine is capitalised before 31st March 10.

Support and confidence of the customer viz. Associated Toolings on GMT is unique. To this date they continue their support on our products and introduced several of their friends in Kolkatta  who own industries and ancillaries to GMT for Power Operated Hand Indexing chuck and other products. It is a unique relationship.

About the author : Shri. K Jagannathan - Executive Director – Sales & Marketing, GMT.
Sri.K.Jagannathan is synonymous with lathe chucks in the Indian machine tool industry. He has been with Guindy Machine Tools for over 5 decades. His vast experience and immense knowledge of workholding products is evident in some of the most complex workholding solutions provided by GMT.