Horizontal Deep Hole Drilling and Boring Machine
Dec 27, 2018
Basic Info
  • Model NO.: GL-350;GL-350A

  • Coordinate Boring Machine Type: Horizontal Type

  • Controlling Mode: Artificial

  • Automatic Grade: Semiautomatic

  • Condition: New

  • Boring Diameter Range: 60-350mm

  • Max. Boring Depth: 1000-15000mm

  • Clamping Diameter of Workpiece: 120-450mm

  • Spindle Taper: 1:20

  • Valtage: 380V/50Hz or Pre-Choose

  • Specification: CE ISO9001

  • HS Code: 8459390000

  • Structure: Deep Hole Boring Machine

  • Tool Type: BTA Drilling Head

  • Precision: High Precision

  • Certification: CE, ISO 9001

  • Color: According to Customers′ Require

  • Drilling Diameter Range: 30-100mm(for a-Type)

  • Spindle Center Height: 450mm

  • Headstock Spindle Speed Range: 60-1000rpm(12steps)

  • Main Motor Power: 30kw

  • Origin: China(Mainland)

Machine Summary
*This machine is specially designed for deep hole processing of cylindrical workpiece.
*It can perform different processing, such as drilling, boring, expanding and roller burnishing, etc. *Besides machining through-hole, it can also process step hole and blind hole.
*The machine tool is suitable for production of special cylinder, coal cylinder, hydraulic machinery, high  pressure boiler tube, petroleum, military, electrics and airspace, etc.
Performance and Features
*The process adopts the mode of workpiece rotating and tools feeding, if necessary the tool can be also  rotary. With the workpiece rotating and the tool feeding.
*The cutting fluid reaches the cutting area by oil supply device or through boring bar end, the chip removal  adopts BTA type. When boring, cutting fluid pushes chips forward out of headstock end. 
*The machine can be equipped with drilling box, achieving double rotation of workpiece and tools, and the  single action is also available for meet the different processing demand. Under the conditions of lower  speed rotation of the workpiece, the processing efficiency and quality can be assured.
*The machine has a wide application according to different processing demand.
*DB-350 is equipped with workhead box, but isn't equipped with boring box or drilling box; DB-350A add to  boring box or drilling box on the basis of the DB-350, so higher efficiency machining  deep hole for  cylindrical workpieces.
*The machine consists of bed body, headstock, drilling and boring box (optional), chuck body, feed  carriage, oil feeder, cooling system, chip removal device, steady rest, hydraulic system, boring bar  support, motor and electrical system, etc.
Technical Parameters

Drilling diameter rangemm/Φ30-Φ100
Boring diameter rangemmΦ60-Φ350Φ60-Φ350
Boring depth rangemm1000-150001000-15000
Workpiece clamping dia. rangemm120-450120-450
Spindle center heightmm450450
Headstock spindle hole dia.mmΦ75Φ75
Spindle front taper hole dia.mmΦ85 1:20Φ85 1:20
Spindle speed ranger/min60-1000 (12 steps)60-1000 (12 steps)
Drill box spindle holemm/Φ75
Drill box front taper holemm/Φ85 1:20
Drill box speed ranger/min/40-670 (12 steps)
Feed speed range (stepless)mm/min5-2000 (stepless )5-2000 (stepless )
Feed carriage fast moving speedm/min22
Main motor powerkw3030
Hydraulic pump motor powerkw1.51.5
Carriage rapid motor powerkw33
Feed motor torqueN.m3636
Cooling pump motor powerkw5.5 (4 groups)5.5 (4 groups)
Cooling system rated pressureMPa2.52.5
Cooling system flowL/min100, 200, 300, 400100, 200, 300, 400
Hydraulic system rated pressureMPa6.36.3
Max. axial force of oil feeder KN6.36.3
Max. clamping force of oil feeder KN2020

*Workpiece support and steady rest
The machine has workpiece rests and closed steady rest. They are used to clamp and position the workpiece with the good stability during process.

*Drilling(boring) bar rest
Three pieces of holder are equipped in standard configuration. The holder is in
Two half-tile structure up and down, which is easy for changing of the drilling
bar. It is used to support the bar, control moving direction of the drilling bar and
remove the vibration. 

*Headstock For Clamping Workpiece
The box adopts high quality casting, with artificial aging treatment. The machine spindle head is short cone flange structure. The headstock spindle is treated by dynamic balancing, which keeps stable rotation and bearing accuracy. The headstock mainly offer powerful torque, which is used for workpiece rotation with 12steps speed. The spindle box adopts powerful oil lubrication. The spindle has the excellent rigidity, high strength, and good precision retaining ability. The chuck can choose 3-jaw chuck or 4-jaw chuck.

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