Video Library. Welcome to the Precitech video library. Below you can find videos of many of the ultra-precision machining processes available with our machines. If you find these useful please subscribe to our YouTube channel.

Hirofumi SUZUKI, Toshiro HIGUCHI, Naoshi WAHMA, Takayuki KITAJIMA, Shigeki OKUYAMA and Hiroshi YAMAZAKI This paper deals with the precision grinding of micro fresnel shape with some micro grooves. Fresnel lenses are useful for the next generation type of optical devices because of its thin structure and excellent optical characteristics.

Precision Grinding of Micro Fresnel Shape and Precision . Request PDF On Jan 1, 2001, H Suzuki and others published Precision Grinding of Micro Fresnel Shape and Precision Glass Molding of Micro Fresnel Lens Find, read and cite all the research you ULTRAPRECISION GRINDING OF MICRO FRESNEL SHAPE, Abstract: This paper deals with the precision grinding of micro fresnel shape …

his paper deals with the precision grinding of micro fresnel shape with some micro grooves. Fresnel lenses are useful for the next generation type of optical devices because of its thin structure and excellent optical characteristics. In the conventional machining method, the lens materials were restricted to plastics, because the cutting tool ...

VERTEX Precision End Mill Grinder VEG-13A HAS THE MOST EASIET DESIGN THAN EXISTING MODEL! Features INCLUDE NOT ONLY High Efficiency BUT ALSO High Quality Grinding Slip. Good Grinding Results Assurance: ±0.02mm,Easy Operation STEP,For Urgent Need, NO NEED TO GO TO THE CUTTER GRINDING MASTER.

Request PDF | On Jan 1, 2001, H. Suzuki and others published Precision Grinding of Micro Fresnel Shape and Precision Glass Molding of Micro Fresnel Lens | Find, read and cite all the research you ...

4. Ultra-precision grinding. Although the evolution of diamond machining has not yet reached its final stage, the main concern today is an improvement in productivity rather than an increase in flexibility and accuracy. In ultra-precision grinding, the situation is different . In fact, similar ultra-precision machining equipment is used for ...

micro injection molding and micro-grinding technology to realize mass production and low-cost manufacturing of LED lamps with excellent lighting performance. Firstly, the micro-structured mold core with controllable shape accuracy and surface quality was …

precision machining and the basic ideas are illustrated in Figure 4. Miyashita6 has made a very fine analysis of the transition from conventional grinding to ductile mode grinding where the boundary between the two is known as micro-crack grinding (semi-ductile grinding). This is exemplified in Figure 4 where material removal rates

MANUFACTURING FRESNEL LENSES. The first Fresnel lenses were made by tediously grinding and polishing glass by hand. Eventually, molten glass was poured into molds, but it was only with the development of optical-quality plastics and injection-molding technology in the 20 th-century that the use of Fresnel lenses in many industrial and commercial applications became practical.

grinding method, and it was clarified that ultra-precision micro Fresnel shape could be ground using a diamond wheel with sharp edge. In this paper, in order to improve the form accuracy, a new truing method with rare metal truer is proposed and the effects of the molybdenum truer are tested.

dark field systems for automobiles. Ultra-precision grinding technology of ceramic molds and dies has become a core technology, by virtue of its high accuracy. The authors have successfully developed a simultaneous 2-axes (Y, Z) controlled grinding method, and their study has clarified that an ultra-precision micro Fresnel shape can be ground by

Y, Suzuki. H, et al., Study on grinding of micro Fresnel lens mold (2nd report) - precision truing of grinding wheel that having sharp edge with truer is made of Mo, and high precision grinding of Fresnel shape-, Japan Society for Precision Engineering, 73, 6, (2006). DOI: 10.2493/jjspe.73.688

The word "Nano Technology" is now generally acknowledged, and it has spread from the fields of genetic medical treatment and semiconductor manufacturing to more universal fields like machining. Assuming 1 nanometer is equal to the total length of 5 to 10 atoms laid in a line, you can imagine how precise nanometer processing is. Application of this technology has already started in various ...

A schematic illustration of the newly developed micro Fresnel grinding method is shown in Fig. 3. As a wheel, a disk shape of diamond grinding wheel, whose edge is trued as a sharp knife-edge, is used and the wheel scans along the workpiece radial position vertically.

Glebar Co. announces its new CAM.3 micro grinder. The CAM.3 represents the next generation in Glebar's 68-year history of providing precision grinding solutions to the medical device industry. Designed from the ground up, the CAM.3 features faster speeds and feeds, larger diameter wheel, increased capability and connection to the IIoT.

Micro grinding tool for manufacture of complex structures, Know More. This paper presents a novel micro shaft grinding tool with cylindrical tool tip diameter between 13 μm and 100 μm The manufacturing of the tool its...

For precision grinding, it should be carried out on the corresponding CNC precision parts processing grinders. 1.The grinding machine should have high precision. In the rotation accuracy of the grinding wheel spindle, the radial runout should be <0.001 mm, and the axial runout should be <0.005 mm. The main shaft bearing should be a dynamic ...

Precision ceramic grinding, ceramic drilling, lapping, micro hole drilling, slicing, slotting, and dicing. From prototype to production with technical advanced ceramic machining and grinding, we render the highest quality precision ceramic machined products while …

Hirofumi SUZUKI, Toshiro HIGUCHI, Naoshi WAHMA, Takayuki KITAJIMA, Shigeki OKUYAMA and Hiroshi YAMAZAKI This paper deals with the precision grinding of micro fresnel shape with some micro grooves.

Precision Grinding of Micro Fresnel Lens Molding Die (2nd Report) ... (Y, Z) controlled grinding method, and it was clarified that ultra-precision micro Fresnel shape could be ground using a diamond wheel with sharp edge. In this paper, in order to improve the form accuracy, a new truing method with rare metal truer is proposed and the effects ...

controlled ultra precision machining/grinding technologies and the on-machine measurement technologies become important. 2. Micro Fresnel grinding Fig. 1 shows a view and a schematic diagram of developed micro Fresnel-grinding process. A disk shape of resinoid bonded diamond wheel was trued on the machine, and the wheel edge was sharpened.

Cite this article: ZHANG Jian-hua,TIAN Fu-qiang,ZHANG Ming-lu, et al. Review of Studies on Micro-grinding and Ultrasonic Assisted Machining[J]. JOURNAL OF …

[5] S. Yamamoto, M. Hirano, K. Nakamoto, T. Ishida, and Y. Takeuchi, "Study on Precision Machining of Glass Lens Mold with Minute Structures (2nd Report) – Ultraprecision Machining of Non-Axisymmetric Aspheric Glass Lens Mold with Micro Fresnel Shape –," J. of the Japan Society for Precision Engineering, Vol.76, , pp. 85-89. 2010.

A schematic illustration of the newly developed micro Fresnel grinding method is shown in Fig. 3.As a wheel, a disk shape of diamond grinding wheel, whose edge is trued as a sharp knife-edge, is used and the wheel scans along the workpiece radial position vertically.

This paper deals with the precision grinding of micro fresnel shape with some micro grooves. A grinding system of 4-axes (X,Y,Z,C) control, a new grinding method with vertically controlled grinding spindle and the disk type wheel of knife-edged shape were developed. In a feasibility study of the fresnel shape grinding, the molding die of ...

Firstly, the micro-structured mold core with controllable shape accuracy and surface quality was machined by the precision trued V-tip grinding wheel. Then, the micro-structured LED diffusion plate was rapidly fabricated by the micro injection molding technology. Finally, the influences of micro injection molding process parameters on the ...

With multiple high speed multi-axis milling machines, we can manufacture the complex shapes and close tolerances required by many industries for high precision parts and devices. 30,000 rpm spindles for high speed precision micro-milling. Laser tool setting for high precision applications. For high-volume production of small, high-precision 3D ...

Hirofumi SUZUKI, Toshiro HIGUCHI, Naoshi WAHMA, Takayuki KITAJIMA, Shigeki OKUYAMA and Hiroshi YAMAZAKI This paper deals with the precision grinding of micro fresnel shape with some micro grooves. Fresnel lenses are useful for the next generation type of optical devices because of its thin structure and excellent optical characteristics.

Abstract: This paper deals with the precision grinding of micro fresnel shape with some micro grooves. A grinding system of 4-axes (X,Y,Z,C) control, a new grinding method with vertically controlled grinding spindle and the disk type wheel of knife-edged shape were developed.In a feasibility study of the fresnel shape grinding, the molding die of tungsten carbide for glass lens were ground in ...

A polygonal Fresnel lens structure with a maximum side length of 1.7 mm and a feature depth of 10 μm was fabricated on a 60.316-mm diameter roller mold by an ultra-precision 5-axis ultra-precision machine system, which demonstrates the feasibility of the diamond micro-scraping method.

PRECISION GRINDING OF MICRO FRESNEL SHAPE . The grinding results show that a form accuracy of about 0.1 ... new grinding method and a disk type ... ultra-precision grinding of micro fresnel shape could ... Inquire Now; Hi-Accuracy The Future of Centerless Grinding. With our modern Hi-Accuracy system, we talk sub micron tolerances.

There is provided a precision roll turning lathe includes: a bed 10; a headstock 12, mounted on the bed 10, for rotating a roll-shaped workpiece while holding one end of the workpiece by means of a chuck, said headstock having an indexing axis (C axis) for performing circumferential indexing of the workpiece; a tail stock 14, mounted on the bed 10 and disposed opposite the headstock 12, for ...