Experimental study of surface roughness on a processed ...
The deviation from the geometric shape of the workpiece is less than 0.15μm and the deviation in terms of roughness parameters is less than 3nm. Diamond turning machine Moore Nanotech 350 FG B. Tool – A special grinding tool for a diamond turning machine made of diamond powder and resin was used to conduct the experiment.
Manufacturing of functional riblet structures by profile ...
In contrast to smooth surfaces, microstructured riblet surfaces can reduce the near-wall shear stresses of a turbulent flow by up to 10%. In the case of compressor blades, riblet structures with a width between 20 and 120 μm and a profile aspect ratio of 0.5 are required, which have to be machined directly onto the metal surface.In this paper, a profile grinding …
On modelling the interaction between two rotating bodies ...
Thus, dressing is used to generate the desired profile on the grinding wheel (i.e. truing), conditioning the surface of the same through removing clogged debris of the workpiece material from its surface and exposing new active cutting …
US4930265A - Thread grinding method and machine - Google ...
US4930265A US06/767,344 US76734485A US4930265A US 4930265 A US4930265 A US 4930265A US 76734485 A US76734485 A US 76734485A US 4930265 A US4930265 A US 4930265A Authority US United States Prior art keywords workpiece grinding peripheral machine work holder Prior art date Legal status (The legal status is an assumption and is …
Optical profile grinding machine - SEIDEL & NAUMANN AG
My present invention refers to optical profile grinding machines. These machines are used for grinding of formgauges and form-tools. During the grinding the. grinding-wheel is moved by the operator against these form-gauges or form-tools, and this motion of the grinding-wheel is observed by means of an optical system, for instance a microscope, which is fixed above the …
Grinding Wheel Profile Definition for the Manufacture of ...
Grinding Wheel Profile Definition for the Manufacture of Drill Flutes K. F. Ehmann, Mechanical Engineering Department, Northwestern University, Evanston, IL/USA - Submitted by M. F. DeVries (1) Received on January 15,1990 A R S'l R A CT A purely analytical approach, based on the principles of differential geometry and kinematics, is presented for the …
US5245264A - Real time straightness deviation measuring ...
A real time straightness deviation measuring and compensation device for a machine tool that automatically and continuously compensates for bed way deviation from a truly straight line relative to a workpiece. A wire, parallel to the workpiece or axis of workpiece rotation and perpendicular to the direction of machine tool compensation is utilized as a straightness …
Maintenance of the wheel–rail interface - ScienceDirect
A controllable transverse profile is ground using stones that rotate about an axis normal to the rail, each of which produces a facet at a specified angle (Figs 20.2 and 20.3).Grinders used on mixed-traffic railway systems typically have at least 32 grinding modules, e.g. Fig. 20.4.Grinders with as few as four modules can be used for 'special purpose' work, …
Precision and Automation Reign at Reishauer | Gear ...
Profiled diamond-discs or composite rolls mounted on a super-precision, high-speed spindle are used to dress the grinding worm profile. Different types of dressing tools can be selected that best fit the desired profile according to the customer's specific requirements. This method is very fast but not universal in its application.
APPLICATION OF MLP AND KOHONEN NETWORKS FOR …
suitable topography for the grinding wheel as well as the desired profile. The topography of the grinding wheel affects the roughness and surface layer of the workpiece through the number and shape of the cutting edges, the pore volume, and the wear behavior of the abrasive layer. The dressing process should promote a grinding process ...
DE19706867A1 - Method for profiling grinding screw ...
A rotating grinding screw carries out a repeated reciprocating motion along a disc-form rotating profiling tool. During a stroke the tool is in engagement with the helix spirals of the screw over their whole depth, and inside one section of the reciprocating travel carries out an additional movement in the form of a constant swinging motion around a first axis which is perpendicular …
Method for re-profiling at least one running surface of a ...
Before grinding of the first rail 1 is started, said grinding stone 24 is pressed against the grinding wheel 12 until the grinding wheel has adopted its profile. While rail 1 is ground, the grinding stone 24 can be lifted from the grinding wheel 12, since the grinding wheel profiles itself at the pre-profile, i.e., at the milled rail-head area ...
An investigation on high-efficiency profile grinding of ...
12%Profile grinding is an established technology for manufacturing aircraft engine components with a high surface quality and a high dimensional accuracy, for instance, the dovetails of gas turbine blades. In spite of recent advantages, the employment of profile grinding has been impeded by drastic wheel wear and thermal damage, especially …
THE VISION OF PRECISION Mid-Sized CNC Grinders
Amada Grinding Technology 1 technologies of amada grinding milling sawing With more than 70 years of industry experience, Amada Machine Tools America is committed to helping our customers deliver dependable service and top-quality work with exceptional grinding solutions. Whether you need profile, forming, surface, or rotary grinding, we have
DE19706867C5 - Profiling methods for the production of ...
Method for profiling a grinding worm for diagonal generating grinding, in which a rotating, disk-shaped profiling tool executes a repeated stroke movement along a worm flight of a rotating grinding worm or vice versa, a rotating grinding worm executes a repeated stroke movement along a rotating profiling tool, the disc-shaped profiling tool with the grinding worm gear …
High Precision Rack and Pinion - APEX DYNA
-Layer Thickness of Hardened Teeth grinding ... which leads to pitting and damage the teeth profile. • Smooth running • Preserve accuracy and long life-time ... Module No. Deviation Q4 Q5 / Q5+ Q6 Q6M Q8H / Q8 Q9 Q10 3 Pressure Angle Deviation (µm) …
METHOD FOR THE MACHINING OF GEAR TEETH, WORK PIECE …
The profile-grinding wheel provided for this operation is designed in such a way that in order to generate the desired final flank geometry of the gear wheel 2, the grinding wheel will need to work at a tilt angle of −27° in the last grinding pass, which means that the profile-grinding wheel is configured with a design angle or nominal angle ...
The Effects of Wear upon the Axial Profile of a Grinding ...
The article describes the effects of wear upon the axial profile of a grinding wheel in the axial cylindrical grinding processes. This mechanism was used to develop a grinding wheel with zone diversified structure made of microcrystalline sintered corundum abrasive grains and vitrifies bond. Such a grinding wheel is characterized by the conical rough grinding zone that is …
Automatic search for wheel position in flute grinding of ...
The given shape of the helical flute, the profile of one or more grinding wheels and the intervals of search space are used for optimization of parameter combinations that allow the grinding of helical flutes with minimal deviation. The automatic search enables to analyse the possible geometrical parameter combinations.
Study on surface generation mechanism and roughness ...
Fig.1 schematically shows the gear profile grinding process. The grinding tool has a rotation speed of ω and the gear workpiece is traversed at a radial cutting depth of a r and a speed of v w.Due to the geometric conditions of the tool and workpiece, the surface generation rule possess different characteristics compared with surface grinding and can be listed by:
Error compensation in radial profile grinding
Abstract of Dissertation Presented to the Graduate School of the University of Florida in Partial Fulfi ll ment of the Requirements for the Degree of Doctor of Philosophy ERROR COMPENSATION IN RADIAL PROFILE GRINDING By T i mothy Mark Dalrymple August 1997 Chairman : John C Z i egert Major Department: Mechanical Enginee r ing To take advantage ...
Analytical modeling of grinding process in rail profile ...
The grinding angle α is defined as the angular value of the normal direction with respect to the vertical direction at the pre-set point of the rail head; a value is used here to represent the working location of the grinding wheel. The "grinding pattern" is a combination of series of variables including grinding angle, applied pressure, and the running speed of the …
Wear Monitoring on Microcrystalline Aluminum Oxide ...
The localized wear on grinding wheel edges is a common phenomenon on profile grinding since the abrasive grains are less attached to the bond. The grinding wheel wear depends heavily on the process parameters, workpiece and wheel composition, causing changes on the process and profile deviation behaviors. In order to cope with these uncertainties, many …
(PDF) Effects of Different Hard Finishing Processes on ...
generating grinding, polish grinding and gear skiving. The effects on gear excitation of the different manufacturing processes is discussed using the application force level L …
Optimization of Tool Path for Uniform Scallop-Height in ...
The machining of free-form surfaces is performed on an ultra-precision grinding machine (Moore Nanotech 450UPL). The grinding machine makes use of a rotational table (B axis) to hold the wheel spindle and the workpiece is mounted on an air bearing, in which the workpiece spindle is rotated and fed over a high-speed spinning wheel to remove excess …
Generating- and profile-grinding mnes haicLGG 180 / 280
Grinding spindle drive power kW 35 28.5 Max. grindable module hob grinding mm 6 5 Max. grindable module profile grinding mm 12 10 Galvanically coated CBN tools yes yes Dimensions of worm grinding wheel (DxLxW) mm 275(320) x 160 x 160 220(240) x 200 x 76.2 Workpiece diameter mm max. 280(400*) max. 280(400*)
PLANOMAT HP | UNITED GRINDING
The PLANOMAT HP combines reproducible precision and powerful speed with high flexibility – the ideal combination for efficient profile grinding. The robust, inherently stiff design with 3-point installation ensures the exactness of the modular PLANOMAT HP machines. A driving power of up to 24 kW combined with high-precision, digitized ball ...
Monitoring grinding effectiveness | Request PDF
The required profile can be obtained by 3~4 passes of a grinding train with 48 grinding modules, and 2 passes of a grinding train with 96 grinding modules. Read more Article
All about Tools
manufacture and regrind profile and planer knives for any desired profile. Fast, exact and reasonably priced. Tool measuring and display systems complete our tool grinding systems. This complete solution guarantees you the highest profile precision and at the same time enormous savings in set-up time. As the worldwide leader in moulders
Powder Metal Through the Process Steps - Gear Technology
Figure 7 Lead profile form deviation; the poor geometry in green, sintered and case hardened is an artifact created by powder particles stuck on the flanks. Figure 8 Lead total profile deviation; within tolerances after grinding; deviations before grinding are partly due to powder particles