معرفی شرکت ZPS ( زد پی اس ) چک
نماینده فروش محصولات ZPS ( زد پی اس ) چک
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ZPS-FRÉZOVACÍ NÁSTROJE a.s.
History and present
Tradition of manufacture of milling cutters dates back to the 30th of the 20th century when production of tools was of the parts of engineering production of the Baťa concern. Production of tools made of high-speed steels (HSS) was commenced on the basis of preceding experience in the early 50s. This production already came under Závody přesného strojírenství (Precise Engineering Works) company known under the abbreviation ZPS world-famous in particular for production of machine tools. The subsidiary company ZPS-FRÉZOVACÍ NÁSTROJE a.s. was established within ZPS a.s.. ZPS–FRÉZOVACÍ NÁSTROJE a.s. has been an independent company since June 2001. The company consists of two manufacturing divisions: Division Cutters and Division Heat treatment.
Long-term tradition and experience, high quality of products, dense distribution network and favourable prices help to maintain a high share of the domestic market and continuing growth of export in demanding, mainly European markets. ZPS – FRÉZOVACÍ NÁSTROJE a.s. is the biggest czech manufacturer of milling cutters made of high-speed steels. Germany is a dominant export region nowadays. The offer of services in the field of thermal processing of tool steels and other metals that includes in particular hardening, tempering and ion (plasma) nitriding has a great importance in the scope of regional activities of the company.
Cooperation with educational institutions
ZPS-FRÉZOVACÍ NÁSTROJE a.s. collaborates with several universities and secondary schools. Close cooperation has been established with Secondary Technical School of the Polytechnic - training center in Zlín, where among other things we financially support the best students of selected engineering disciplines and we also provide tools for schooling.
Production of milling cutters developed from the historically oldest part of the company. Its head office is situated in the building No. 71 of the industrial premises in Zlín.
Milling cutters made of standard high-speed steels such as HSS, HSSCo5, HSSCo8 and HSSE-PM are a subject of production. To improve a use value of our milling cutters, we offer the TiAlN universal coat as a standard part of our production range. The milling cutters comply with DIN and ČSN or potentially PN standards.
The production range includes a wide offer of not only shank milling cutters (plain, slotting, copying ones) but also cutters with Morse taper, steep taper, form cutters with both shank and hole, disk cutters and last but not the least, special customized milling cutters.
Division Heat treatment
We are doing heat treatment of all air hardenable materials - high-speed steel, tool steel for hot work and cold, stainless steel. We use the vacuum furnaces made by Schmetz and Kopp. In these furnaces we can also perform all types of annealing, also we can do soldering. In 2014 we purchased new technology of cryogenic treatment of steels, so we can cool materials down to -160 °C. We also do ion nitriding, carbonitriding an oxidation in Rübig furnace. We process materials from structural steels through the tool and stainless steel to HSS.
Certificate ISO 9001:2015
High-speed steel of medium performance, suitable for milling cutters of smaller diameters and for milling of materials with strength of up to 900 MPa with respect to its toughness.
Cast high-performance high-speed steel with good toughness suitable in particular for tools of larger dimensions and disk cutters.
High-performance high-speed steel with good toughness for milling cutters and milling of materials with strength of up to 1200 MPa.
High-performance steel with good toughness and excellent thermal resistance. It is suitable in particular for milling of highly tough materials, austenitic steels, steels for hot forming etc.
Extra high performance high speed steel produced by powder metallurgy. It has a homogeneous structure resulting in higher dimension stability and longer tool life. It is applicable for machining of materials with very high strength and materials hard to machine, such as Titanium and its alloys. The milling cutters made from this material are delivered with AlTiN coating as a standard.
Coatings used to increase durability and productivity of cutters
Main benefit of PVD coats consists in the extension of service life and increase of productivity of milling cutters at chip machining. The coats are known for:
- High surface hardness
- High abrasion resistance
- Friction coeficient reduction
- Reduction of tranfer of heat in the tool
ZPS-Frézovací nástroje has the supplier of the coat. This coat will be offered as a standard coat that will be maintained in stock for catalogued plain face milling cutters (DIN 844) and slotting cutters (DIN 327) in the future period. The aim is to shorten delivery terms of coated tools and to simplify selection of the correct coat for the end users.
To be said shortly, it is possible to increase the standard cutting speed of an uncoated tool 1.3 times (in case of TiN), 1.4 times (TiCN) and 1.5 times (TiAlN, AlTiN). These values are only approximate as they depend on many factors such as cooling, suitable machine, correct selection of coat for the material being machined etc.
The technology of cathode arc steaming that is most frequently used method in the world is utilized for application of hard abrasion resistant coats. Coating is made using the Platit Swiss technology.
A universal coat for machining of a wide range of materials with medium and higher strength at medium and higher cutting speeds. It has excellent hardness – toughness ratio thanks to a multi-layer structure. Thanks to higher oxidation resistance and hardness at higher temperatures, it does not require perfect cooling.
A coat with very high oxidation resistance suitable for demanding applications such as milling at high cutting speeds or milling without cooling. The coat is suitable for machining of e.g. nodular cast iron, steels with high strength or steels for forging.
Coating with very high wear resistance and excellent hot hardness.
Universal usage. Suitable for materials up to strength 900 MPa.
For roughing operation and materials of lower and medium strength (up to 700 MPa), surface roughness Ra 12,5 and more.
For machining of materials of lower and medium strength (up to 700 MPa), surface roughness Ra 3,2 and more, in common application can be applied as roughing and finishing tool at the same time.
Designed for milling (finishing) of materials of medium and higher strength (up to 1200 MPa). Surface roughness Ra 3,2; exceptionally even 1,6.
For roughing operation and materials of medium and higher strength (up to 1200 MPa), surface roughness Ra 6,3 and more.
For machining of materials of medium and higher strength (up to 1200 MPa), surface roughness Ra 3,2 and more, in common application can be applied as roughing and finishing tool at the same time.
For machining of soft materials, for example aluminium and non-ferrous metals.
For roughing operation and materials of lower and medium strenght.
Chip Breaker – universal application for roughing.
The cutting conditions are approximate only. They can change depending on the technological conditions.
The cutting conditions are set up for milling (conventional) with cooling.
The conditions for optimum machining:
- Riding enough connection machine tool - cutting tool - workpiece
- Good condition of maching tool, constant feeds
- Well chosen cutting tool, eventually coating
- The machined material has to be of constant structure
- The appropriate choise of tho cooling fluid
- Enough cooling
- Enoug chip removal
Diameter of milling cutters
D - [mm]
Number of teeth
D x π x n
v = ------------- [m/min]
v x 1000
n = ------------ [1/min]
D x π
Rate of feed
s = fz x n x z [mm/min]
Feed per tooth
fz = ------- [mm]
z x n
Metal removal rate
Ap x Ae x s
Q = ---------------- [mm3/min]