our products

D&Q Mining is a high-tech company integrating R&D, production and sales. It provides mature products and solutions such as crushers, sand making, milling equipment, mobile crushing stations, etc., for aggregate, mining and waste recycling.

active length and grinding length

Discrete-element modelling of the grinding contact length

Discrete-element modelling of the grinding contact length combining the wheel-body structure and the surface-topography models J.L. Osaa,n, J.A. Sáncheza, N. Ortegaa, I. Iordanoffb, J.L. Charlesb a Mechanical Engineering Department, University of the Basque Country UPV/EHU, Spain b Arts et Métiers ParisTech, I2M-DuMAS, UMR 5295 CNRS F-33405, Talence, France

More

INTERNAL AND UNIVERSAL GRINDING MACHINE ILD

Max. internal grinding diameter 420 mm 420 mm 500 mm 450 mm Max. internal grinding length 400 mm 400 mm 400 mm 400 mm Max. external grinding length 150 mm 150 mm 400 mm 400 mm Max. workpiece swing diameter 600 mm 600 mm 700 mm 760 mm Max. workpiece length incl. clamping system 800 mm 1300 mm 500 mm 500 mm

More

The Art of Grinding. A member of the UNITED GRINDING Group

Internal grinding attachment Length positioning facility Wheelhead The turret wheelhead can be used for both ex-ternal and internal grinding; it can be equipped with an external grinding wheel (right) and an internal grinding spindle for this purpose. With extreme precision, the user can manually (2.5°) index the turret wheelhead in a Hirth gear within a swiveling range of -15° / +195

More

The Real Contact Length between Grinding Wheel and

01/01/1992· The Real Contact Length between Grinding Wheel and Workpiece A New Concept I. and a New Measuring Method Z. X. Zhou, C. A. van Lutterwelt (1); Laboratory for Flexible Production Automation, Technical University Delft/Netherlands Received on January 6,1992 Summary Research on the contact length in grinding is needed to understand the grinding mechanism and for analysis of grinding

More

A method for prediction of active grits count in surface

15/07/2017· A method was developed for predicting active grits count in surface grinding. The number of grits on the wheel surface per unit length (S grits) on surface grinding wheel is given by Eq. (5) S grits = (Vol ume fraction of abrasives) 1 / 3 d g where ‘d g ’ is mean grit diameter. From the number of grits per unit length, number of grits per unit area (N grits) can be calculated as (6) N

More

Grinding machine Schenker Maschinen AG

In accordance with a feature of the invention, the grinding machine further comprises a gauge or monitoring means 25 which measures the length of finished workpieces 16, i.e., the length of those workpieces whose end portions were treated by the active surfaces 1' and 8' during travel in the space 15 between the grinding wheels 1 and 8. To this end, the gauge 25 is installed adjacent to the

More

Used Cylin. grinding mach. from 2100mm grind. length for

grinding diameter 355 mm grinding length 3000 mm centre height 180 mm workpiece weight max. 500 kg grinding wheel dia. x width 630 x 125 mm spindle speed: 1080 UpM number of turns of spindle head 12 / 11,2 500 U/min spindle taper MK 6 spindle head drive 1,5 kW spindle headstock 90° / 15° table speed longitudinal 0,05 5 m/min. table travel longitudinal 3180 mm table swivable

More

Analysis of Grinding Force and Elastic Deformation in

Considering the grinding geometry of the thread grinding dynamic contact arc length, a dynamic numerical thread grinding model has been set up on the basis of study of a single grit grinding model. The properties of grinding force and dynamic contact arc-length have been studied by means of the developed numerical model. The results have shown that the angle of helix has little effect on the

More

The Real Contact Length between Grinding Wheel and

01/01/1992· The Real Contact Length between Grinding Wheel and Workpiece A New Concept I. and a New Measuring Method Z. X. Zhou, C. A. van Lutterwelt (1); Laboratory for Flexible Production Automation, Technical University Delft/Netherlands Received on January 6,1992 Summary Research on the contact length in grinding is needed to understand the grinding mechanism and for analysis of grinding

More

The Art of Grinding. A member of the UNITED GRINDING Group

Internal grinding attachment Length positioning facility Wheelhead The turret wheelhead can be used for both ex-ternal and internal grinding; it can be equipped with an external grinding wheel (right) and an internal grinding spindle for this purpose. With extreme precision, the user can manually (2.5°) index the turret wheelhead in a Hirth gear within a swiveling range of -15° / +195

More

(PDF) Applications of Contact Length Models in Grinding

It is found that the measured contact length le in grinding is considerably longer than the geometric contact length lg and the contact length due to wheel-workpiece deflection If. The orthogonal

More

Regular Grinding is the Key to Long Rail Life Global

30/07/2007· Thus, professional turnout grinding cuts life cycle costs of the track noticeably. Each of these high-duty turnout grinding trains consists of two power units (locomotives) and a centre trailer with an overall length of approx. 42 meters and disposes of 20 grinding units each. Currently, both trains are mainly in service at Deutsche Bahn AG.

More

(PDF) A method for prediction of active grits count in

represent the number of static grits per unit length, per unit. surface area, and per unit volume respectively. However, active grits (grits which are participating in the cutting process) count

More

Measuring and Modeling of Grinding Wheel Topography

Graduate Studies for acceptance a thesis entitled “Measuring and Modeling of Grinding Wheel Topography” by Abdalslam Darafon in partial fulfilment of the requirements for the degree of Doctor of Philosophy. Dated: April 1, 2013 External Examiner: _____ Research Supervisor: _____ Examining Committee: _____ _____ Departmental Representative: _____ iii DALHOUSIE UNIVERSITY DATE:

More

Grinding machine Schenker Maschinen AG

In accordance with a feature of the invention, the grinding machine further comprises a gauge or monitoring means 25 which measures the length of finished workpieces 16, i.e., the length of those workpieces whose end portions were treated by the active surfaces 1' and 8' during travel in the space 15 between the grinding wheels 1 and 8. To this end, the gauge 25 is installed adjacent to the

More

Used Cylin. grinding mach. from 2100mm grind. length

grinding diameter 355 mm grinding length 3000 mm centre height 180 mm workpiece weight max. 500 kg grinding wheel dia. x width 630 x 125 mm spindle speed: 1080 UpM number of turns of spindle head 12 / 11,2 500 U/min spindle taper MK 6 spindle head drive 1,5 kW spindle headstock 90° / 15° table speed longitudinal 0,05 5 m/min. table travel longitudinal 3180 mm table swivable

More

Landis LT2HHe Fives in Grinding

Crankshaft grinder for heavy industrial applications Specifically designed for grinding crankpins and journals on crankshafts up to 4.5m in length, the Landis LT2HHe is the world’s largest-capacity fully automatic, twin wheel head CBN grinding machine. Designed around proven Landis technology utilizing linear motors and fully hydrostatic linear and rotary axes, the Landis LT2HHe brings the

More