Gantry Milling Machine


June 1, 2017 Facebook Twitter LinkedIn Google+ milling machines



American Whitney created a horizontal milling machine in 1818; in order to milling the spiral groove of the twist drill, American Brown in 1862 created the first universal milling machine, which is the prototype of the milling machine; 1884 years ago appeared again and again Gantry milling machine; semi-automatic milling machine appeared in the 1920s, and the workbench used the stopper to complete the “feed-fast” or “fast-feed” automatic conversion.

Table of content

1.Gantry milling machine

1.1 Definitions

1.2 distinction

1.3 structure

1.4 main parameters

2. Category

2.1 form division

2.2 System division

2.3 Capacity division

3. Performance characteristics

4. Operating procedures

5. repair

6. Thermal deformation

7.Other references

8.List of gantry milling machine manufacturers

1.Gantry milling machine

1.1 Definitions

Gantry milling machine referred to as gantry milling, is a door frame and horizontal long bed milling machine. Gantry milling machine can use multiple milling cutter at the same time processing surface, processing accuracy and production efficiency are relatively high, suitable for batch and mass production in the processing of large parts of the plane and slope. CNC gantry milling machine can also be processed space surface and some special parts.

1.2 distinction

The gantry milling machine has a similar shape to the gantry planer. The difference is that its beams and columns are loaded with a cutter without a planer but with a spindle box, and the reciprocating motion of the longitudinal table of the gantry milling machine is not the main movement, To the movement, while the rotation of the milling cutter is the main movement.

1.3 structure

The gantry milling machine consists of a door frame, a bed table and an electrical control system.

The door frame consists of columns and top beams, with beams in the middle. The beams can be lifted and moved along the two column guides. There are 1 to 2 beams on the beam with a vertical spindle, which can be moved laterally along the beam guide. Two pillars can also be installed with a horizontal spindle of the milling head, it can be along the column for lifting movements. These milling heads can process several surfaces at the same time. Each milling head has a separate motor (power up to 150 kW), variable speed mechanism, operating mechanism and spindle components.

Horizontal long bed with a removable table, and covered with a shield. Processing, the workpiece is installed on the table and with the vertical feed movement.

Gantry milling machines also have some variants to accommodate different processing objects.

① gantry boring and milling machine: the beam is equipped with milling and boring milling boring head, the spindle (sleeve or ram) can be used for axial motor feed and fine-tuning device, fine-tuning speed can be as low as 5 mm / min. Can be boring and milling operations.

② gantry milling machine: beam with a power head, through the pole with a drill or cutter, to complete the drilling and milling operations.

Gantry milling machine bed is equipped with X-axis guide, gantry milling machine table across the fastening in the bed. The gantry also includes a gantry carriage and a gantry carriage moving on the X-axis guide. Z-axis guide, mounted on the gantry. And the beam is provided with a Z-axis carriage, and the beam is movably clamped on the Z-axis guide through the Z-axis carriage, and the Y-axis guide is also mounted on the beam. Milling device, gantry milling machine milling device activities installed in the Y-axis rails, so that the gantry in the control of CNC control system for X, Y, Z three-axis three-dimensional space milling. The CNC gantry milling machine with high precision milling, drilling, boring, cutting and other operations.

1.4 main parameters

Gantry milling machine main parameters for the work surface width, but also to the gantry width as a parameter.

2. Category

2.1 form division

According to the gantry whether to move, divided into gantry fixed table mobile (about 90% or more)

And gantry mobile (also known as bridge). Bridge gantry milling is characterized by small footprint, carrying capacity, gantry travel up to 20 meters, easy to process special or special weight of the workpiece.

Whether the beam on the column movement, divided into moving beam and fixed beam two; beams in the elevated bed movement known as elevated.

2.2 System division

Divided into ordinary and CNC type, as well as manufacturers to develop a common milling and CNC milling one-click conversion of digital intelligent gantry milling, more flexible and practical.

2.3 Capacity division

Divided into light, medium and heavy (super heavy) gantry milling.

3. Performance characteristics

Gantry milling machine has enough rigidity, high efficiency, easy operation, simple structure, comprehensive performance and so on.

Its specific performance characteristics according to the type, model and manufacturers have different, and the technology used has a great relationship.

4. Operating procedures

1, the work of the use of pressure plate, screws or special tools clamping. Use the general wrench are not allowed to casing, so as not to slip off wounding.

2, the tool must be clamped, or are not allowed to drive work.

3, before work, to check the operation of the machine drive part of the machine, and the machine baffle installed in order to run.

4, milling all kinds of workpieces, especially rough milling, the beginning should be slow cutting.

5, move the table and turret, you should first release the fixing screw.

6, loading and unloading tool, you should use the copper hammer or mallet tapping, to prevent the debris from flying out of the tool.

7, in the cutting, are not allowed to speed and adjust the tool, prohibit hand touch or measure the workpiece.

5. repair

Gantry milling machine guide repair: machine tool rails are mostly made of steel or cast iron, such rails scratched, should be repaired, or will make scratches to expand, and even affect the use of machine tools. Machine tool rails and other friction pairs, in the long-term use of the process, due to the existence of different degrees of friction between the two contact surfaces, so that the friction surface to produce varying degrees of wear and tear, serious impact on the machine tool processing accuracy and production efficiency. Repair of machine tools and other wear parts, usually using metal plate and polymer materials such as inlay or replacement methods, not only need a lot of precision manufacturing, and often need to manually scan the processing surface, repair work processes, duration long.

Solution: the use of international advanced polymer 2211F metal repair materials to repair the gantry milling machine rail scratches, just a few hours to track the parts of the track repair is completed, put into use. Practice has proved that this method is simple to operate, save time, repair quality, low cost. The use of its unique adhesion, excellent compressive strength and oil resistance, wear resistance, can provide a long-term protection for the components, can effectively solve the large equipment can not be disassembled by the traditional maintenance methods can not solve the problem, so that Equipment performance has been improved to improve the parts with the gap, to maximize the production of the normal operation of the customer to save a lot of time and money for the normal operation of enterprise equipment to provide a long-term good guarantee.

Repair principle: polymer composite material is a polymer, metal or ceramic ultrafine powder, fiber and other materials, in the curing agent, curing accelerator under the effect of composite materials. Various materials in the performance of each other learn from each other, resulting in synergistic effect, so that the overall performance of composite materials is better than the original composition of materials. It is widely used in the repair of metal equipment such as mechanical wear, scratches, pits, cracks, leakage, casting and so on. It is widely used in the repair of metal equipment such as mechanical strength, mechanical properties, chemical resistance and chemical resistance. , Chemical tank, chemical protection and repair of pipeline.

Repair process:

1, with oxygen – acetylene flame baked scratches the site (master the temperature, to avoid surface annealing), the perennial oily metal surface of the oil baked out, roasted no spark splashing.

2, the scratches with angle grinder surface treatment, grinding depth of 1 mm or more, and grinding along the guide groove, preferably the dovetail groove (Figure). Scratches at both ends of the drill hole to deepen, change the force situation.

3, with absorbent cotton dipped in acetone or anhydrous ethanol to clean the surface.

4, will be harmonized 2211F evenly applied to the scratch surface; the first layer is thin, to be uniform and all cover the scratch surface to ensure that the material and the metal surface of the best bonding, and then the material applied to the entire repair site after repeated Press to ensure that the material is filled and the desired thickness is made to be slightly higher than the rail surface.

5, the material at 24oC fully meet the performance takes 24 hours, in order to save time, you can improve the temperature through the tungsten halogen lamp, the temperature of each upgrade 11oC, curing time will be shortened by half, the best curing temperature of 70oC.

6, the material after curing, with fine grindstone or scraper, will be higher than the surface of the material to repair the surface, the construction is completed.

6. Thermal deformation

Reason: Under the influence of internal and external heat source, the gantry milling machine parts will be different degree of thermal deformation, so that the relative movement between the workpiece and the tool was broken ring, for the gantry milling machine, because all the processing process is the calculation of the instructions Control, the impact of thermal deformation is even more serious.

In order to reduce the thermal deformation, in the gantry milling machine structure usually use the following measures.

1: control the temperature rise in the take a series of measures to reduce the heat, the thermal deformation of the situation will be improved. But to completely eliminate the gantry milling machine inside and outside the heat source is usually very difficult, or even impossible. So must be through a good cooling and cooling to control the temperature rise, in order to reduce the heat source. The more effective method is to force the cooling part of the gantry milling machine. It can also make the temperature of the gantry milling machine coincide by the heating method in the low temperature part of the gantry milling machine, which can reduce the warping deformation caused by the temperature difference.

2: reduce the heat gantry milling machine internal heat generated when the main heat source, should be as much as possible from the host to separate the heat.

3: the improvement of the spindle box For the gantry milling machine spindle box, should try to make the spindle thermal deformation occurs in the vertical direction of cutting the tool. This minimizes the effect of hot deformation of the spindle on the machining diameter. In the structure should also be as much as possible to reduce the spindle center and the spindle to the ground distance, in order to reduce the total amount of thermal deformation, and should make the spindle box before and after the temperature rise to avoid deformation after the spindle tilt.

4: to improve the gantry milling machine mechanism in the same heat conditions, gantry milling machine mechanism also has a great impact on thermal deformation. Such as gantry milling machine used in the past single column institutions may be replaced by double column institutions. Due to the symmetry, the vertical axis of the double column mechanism is heated in the vertical direction, the deformation in the other direction is small, and the vertical axis movement can be easily compensated by the correction amount of a coordinate.

7.Other references

Milling Cutter
CNC Turning Machine
Universal Milling Machine
Horizontal Milling Machine
Vertical Milling Machine
Tapping Machine
Water Jet Cutting Machine
Plasma Cutting Machine
EDM – Electrical Discharge Machining
ERP – Enterprise Resource Planning
CAM – Computer Aided Manufacturing
CAD(Computer Aided Design)
cnc-milling-machine
cnc router
cnc-lathe-machine-buyers
3d-printer
cnccomputer-numerical-control
cnc-grinding-machine
cnc-drilling-machine
cnc-machining-center
5-axis-cnc-machine
cnc-machining

8.List of gantry milling machine manufacturers

ManufacturerHQSizeV/HAxisU/SSpecialModelPriceNote
Grizzly Industrial Inc.USAmicrovertical3universal
Micro-MarkUSAmicrovertical3universal
SIEG Industrial GroupChinamicrovertical3universal
Nano CorpJapanmicrohorizontal3universal
TORMACHUSAsmallvertical5universal
Kugler GmbHGermanysmallhorizontal5bothflycutting
DATRON AGGermanymediumvertical5bothdental
HURCOGermanymediumboth5universal
HAAS CNCUSAmediumboth5universal
MAZAKJapanmediumboth5universal
DMG MoriGermanymediumboth5universal
HellerGermanylargeboth5bothcrankshaft, camshaft
DANOBOTSpainlargeboth5universal
PAMA MachineItalylargehorizontal5universal
CNC MastersUSAsmallvertical3universalCNC Baron$6,250.00
SaporitiItalymediumvertical3specialthread, worm
Liechti EngineeringSwitzerlandmediumhorizontal5special3D Profile
GFSwitzerlandmediumvertical5universalMicron
Waldrich CoburgGermanylargevertical5universalChina Owned
Shanghai SunmoreChinasmallvertical3universal
Weihai Huadong AutomationChinalargeboth3universal
WZChinalargeboth3bothrail, aluminum ingotaluminum ingot
Qinghai HuadingChinalargeboth3universal
CR OnsrudUSAmediumvertical5universal
Newway CNCChinamediumboth5universal
Victor MachineryUSAmediumvertical3universal
Shandong Weida HeavyChinamediumboth3universal
Nantong No.5 Machine ToolsChinamediumvertical3universal
Beijing Red FlagChinamediumvertical3specialauger attack, valve catheter, deep hole
Kasuga SeikiTaiwanmediumvertial5universal
WMW MachineryUSAmediumboth3universal
Dalian Machine ToolsChinamediumboth3bothcrankshaft, piston
Starrag GroupSwitzerlandlargeboth5both
Microlution IncUSAmicroboth5bothdeep hole
Crankshaft MachineUSAlargeboth3specialcrankshaft, camshaft
Clausing IndustrialUSAsmallboth3universal
Cincinnati GilbertUSAlargehorizontal3universal
American GFMUSAlargeboth3bothcrankshaft, camshaft
Acer SpringwoodUSAmediumvertical3universalTaiwan made
Weiss MachineryChinasmallboth3universal
Tacchi GiacomoItalylargeboth3bothdeep hole
SpinnerGermanymediumvertical3universal
SchiessGermanylargeboth5universalChina Owned
RafametPolandlargevertical3universal
KrewemaGermanymediumvertical3bothtube
Heinrich GeorgGermanylargevertical5bothsheet metal, slitting
Dalian FulltonChinamediumboth3universal
FramagAustriamediumboth3special
ChevalierTaiwanmediumboth3universal
Pietro CarnaghiItalylargevertical5universal
Ace MicromaticIndiamediumboth3universal
Accut MachineryChinalargeboth3universal
SordoniItalylargeboth3bothtransfer, thread, slot
Famar GroupItalymediumboth3bothtransfer
Ching Hung MachineryTaiwanmediumvertical3universalhigh speed
Tenzhou Tri UnionChinasmallvertical3universal
FermatCzechmediumhorizontal3universal
EGWGermanymediumvertical3universal
AZ SpaItalymediumvertical3universal
MpvosaItalymediumvertical3universal
Nantong JiarongChinamediumvertical3universal
Maschinen WagnerGermanymediumvertical5universal
LazzatiItalylargehorizontal5universal
Kunming Machine ToolsChinalargeboth3universal
Cheto CorpPortugalmediumvertical5specialdeep hole
Holroyd PrecisionUKmediumhorizontal3specialrotor
HabramaGermanymediumvertical3specialprofile, gear
ZimmermannGermanymediumboth5universal
ZayerSpainlargeboth5universal
Yih ChuanTaiwanmediumboth5universal
WitechSwitzerlandsmallvertical5universalengraving
WissnerGermanymediumvertical5universal
Willemin MacodelSwitzerlandmicrovertical5bothdental, watch, jewelry, medical
WFL MillturnAustriamediumvertical5universal
WemasGermanymediumboth5universal
WeingaertnerAustrialargevertical5bothwhirling
VHF CamfactureGermanymediumvertical5universal
Urban MaschinenbauAustriamediumvertical3universal
Union ChemnitzGermanymediumboth3universal
TrimillCzechmediumboth5universal
TOS VarnsdorfCzechmediumvertical3both
TOS KurimCzechlargehorizontal5universal
Tongtai SeikiTaiwanmediumboth3universal
SuginoJapanmediumboth3universal
Skoda Machine ToolCzechlargehorizontal3universal
SHWGermanylargehorizontal5universal
Shin Nippon KokiJapanlargeboth5bothrail, crankshaft, aluminum slab
Shenq Fang YuanTaiwanmediumvertical5universal
SchmollGermanymediumvertical3universal
Rong FuTaiwansmallvertical3universal
RoedersGermanysmallvertical5bothdie, mold, opticals
Rich YoungTaiwanmediumboth3universal
Reiden TechnikSwitzerlandsmallvertical5universal
RechermannGermanymediumboth3universal
RambaudiItalylargeboth5universal
RaisBulgariramediumboth5universal
PromacItalymediumvertical5universal
PrimaconGermanysmallvertical5specialwatch, jewelry
MB PortatecGermanymediumvertical5universal
PinnacleTaiwanmediumvertical5universal
Ping Jeng MachineryTaiwanmediumvertical5universal
PF MachinesSwitzerlandsmallvertical5specialjewelry,diamond
OptimumGermanysmallvertical3universal
OPS IntersollGermanymediumboth5universalhigh speed
Gruppo ParpasItalymediumboth5universal
OKK CorpJapanmediumboth5universal
Niles SimmonsGermanylargeboth5bothcrankshaft, camshaft
Nicolas CorreaSpainlargeboth5universal
NamsunKoreamediumvertical3universal
MuegaGermanymediumboth5universal
MTESpainlargehorizontal3universal
Mitsui Seiki KogyoJapanmediumboth5universal
MikromatGermanymediumvertical5universal
MetromGermanymediumvertical5both
MatecGermanymediumvertical5universal
LilianTaiwanmediumvertical3universal
LangGermanysmallvertical5specialengraving
KunzmannGermanymediumvertical5universal
KovosvitCzechmediumvertical5universal
KnuthGermanymediumvertical5universal
Keppler MaschinenbauGermanymediumhorizontal5bothcylinder head
KekeisenGermanylargeboth5both
Kao MingTaiwanmediumvertical5universal
Kao FongTaiwanmediumboth5universal
JuaristiSpainlargehorizontal5universal
JobsItalylargeboth3universal
Innse BerardiItalylargeboth5bothslot
IMES ICOREGermanysmallvertical5bothdental
Huron GraffenstadenFrancemediumboth5universal
HeyligenstaedtGermanylargeboth5universal
She HongTaiwanmediumboth3universal
HamuelGermanymediumboth5universal
GoratuSpainmediumhorizontal5universal
GoglioItalymediumboth5universal
FrejothTaiwanmediumboth5universal
FPT IndustryItalylargeboth5universal
FPSGermanymediumvertical3universal
FookeGermanymediumvertical5universal
FlexicamGermanymediumvertical5universalrouter
Fives GroupFrancemediumboth5universalprofile, router
First Long ChangTaiwanmediumvertical3universal
FidiaItalylargevertical5universal
FehlmannSwitzerlandsmallvertical5universal
ExeronGermanysmallvertical5universal
EumachTaiwanmediumboth3universal
EmissaSwitzerlandsmallvertical3bothwatch
EmcoAustriamediumvertical5universal
ElhaGermanymediumboth3both
EIMAGermanymediumvertical5universal
DufieuxFrancelargeboth5bothmulti spindle
ColgarItalylargeboth3universal
CMI DurangoSpainlargevertical3universal
CB FerrariItalymediumvertical5universal
BumotecSwitzerlandmediumvertical5universal
AlzmetallGermanylargevertical5universal
Agie CharmillesSwitzerlandmediumvertical5universal
AbeneSwedenmediumboth3universal
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