MKS1350-4000 Large CNC External Grinding Machine

1、 Grinding machinebrief introduction

The MKS1350 large CNC cylindrical grinder adopts a rear moving structure, which means that the grinding wheel frame moves parallel to the centerline of the head frame and tail frame spindle, and the grinding wheel frame moves vertically forward and backward along the centerline of the head frame and tail frame spindle; This structural form avoids the disadvantage of slight changes in the worktable guide rail caused by changes in the weight of the workpiece when using a static pressure guide rail worktable for movement, which can affect the grinding accuracy of the workpiece; It has the advantages of lightweight moving parts, minimal weight variation, low inertia of moving parts, and high efficiency and energy saving.

2、 Grinding machineMain specifications and parameters

3、 Grinding machineMain functions and structural features

3.1Bed frame

The bed is a rectangular structure, with the front serving as the installation base for the worktable and the rear as a parallel (Z-axis) moving guide rail

the base level. The bed is made of high-strength wear-resistant cast iron cast with resin sand, and the interior is densely covered with cross shaped ribs

Reasonable structure, smooth and even casting surface. The bed frame casting has undergone two artificial aging treatments to ensure sufficient internal stress

Release to ensure the stability of the precision of the motion guide rail. The base surface of the guide rail is ground and processed to connect the guide rail after installation

Smooth contact, utilizing the superior working accuracy and rigidity characteristics of linear guides.

3.2Head frame

The headstock adopts a fixed spindle, which is supported by high-precision and high rigidity rolling bearings to drive the workpiece to rotate

Turn around. The headstock adopts an imported AC spindle motor for speed reduction transmission through a pulley, and is controlled by a variable frequency speed regulation system

The current workpiece has a stepless high-precision rotary spindle that does not rotate, while the dial rotates to drive the workpiece to rotate for machining.

3.3Tail frame

The tailstock sleeve slides inside the tailstock box hole, which is precision machined with a diamond grinding rod,

The roundness and cylindricity of the inner hole can reach a high level, and the clearance between the outer circle of the sleeve and the box hole during grinding is controlled within

In the optimal state, the lubrication of the tailstock sleeve adopts timed and quantitative lubrication. Hydraulic drive cylinder connected to tailstock sleeve

The method is a split floating connection, which eliminates the eccentricity between the cylinder movement and the sleeve, and extends the precision of the tailstock sleeve to maintain it

Time. It can automatically tighten the workpiece.

3.4.workbenches

The workbench is fixed and does not move, and the grinding wheel holder moves in both directions to complete the machining action. The head and tail supports are stable,

Eliminate the impact of motion inertia on workpiece rotation accuracy and feed system. The workbench has angle adjustment

The function is used to correct the machining taper of workpieces.

3.5. Grinding wheel holder

Both the lateral and longitudinal feed movements of the grinding wheel rack are guided by linear guides. Low sports load

Accurate grinding wheel shaping and fast grinding feed response speed. The grinding wheel rotation axis is parallel to the workpiece rotation axis.

The cross slide seat is located behind the worktable and moves left and right along the linear roller guide parallel to the worktable on the bed

Move to achieve Z-axis movement of the machine tool; The top surface of the cross slide seat is equipped with a straight guide rail that forms a vertical angle with the bed guide rail

Linear roller guide rail, the grinding wheel holder moves forward and backward along the top guide rail of the cross slide seat to achieve the X-axis movement of the machine tool.

The feed motion is driven by an AC servo motor connected to a pre loaded high-precision ball screw.

3.6．grinding wheel spindle

The grinding wheel spindle bearings are produced using patented technology from Beijing Oriental Lean Company,Radial support at both ends

Inter axial thrust static pressure bearing structureThis technology was once listed as a major national special project. Rotation accuracy

The rigidity and service life shall not be lower than that of imported spindles. The static pressure spindle is equipped with an independent static pressure oil tank

Install a constant temperature device for oil products.

After the diameter of the grinding wheel decreases due to wear, the linear velocity of the grinding wheel automatically increases in three stages to maintain a high grinding capacity.

3.7.V-shaped workpiece support, trimmer

Configure two dedicated setsV-shaped workpiece bracket, with a thickness of 20mm, installed on the workbench to support the workpiece. Easy to support and adjust the workpiece during loading and unloading. The manual height adjustment device for the bracket is installed at the front end of the operating position for easy adjustment.

The grinding wheel dressing adopts a single point diamond pen dressing, and the dressing device is installed on the workbench.

Grinding wheel dressing is achieved through macro program control in a numerical control system. When the grinding wheel needs to be corrected to a pre-set value, it will be automatically trimmed according to the pre-set value. After finishing, the grinding size will be compensated automatically, and then it will cycle automatically according to this cycle.

3.8Online measurement

This feature is an optional itemUsing the Italian Marposs radial measuring device to achieve online measurement of workpieces.

3.9.Automatic balancing of grinding wheel

This feature is an optional itemThe automatic balancing device uses the P7WB type grinding wheel automatic balancing instrument from the Italian Marposs company. By continuously detecting the balance status of the grinding wheel and automatically compensating to balance when the wheel is unbalanced, the surface quality of the grinding workpiece can be appropriately improved and the service life of the grinding wheel spindle can be extended.

3.10.Cooling water tank

The cooling water tank consists of two stages: a settling tank and a filtering tank. The cooling water flows back into the sedimentation tank water tank, and then enters the filtered water tank through the cooling water pump. The filtering box is a secondary filtering water tank with paper tape filtration and magnetic separation. Install a liquid level display device on the water tank. There are four moving wheels under the water tank for easy cleaning and maintenance. The sedimentation tank has a simple structure that is easy to transport and clean. The machine tool adopts water-based emulsion cooling.

3.11Grinding machineprotection

The machine tool protection is full protection, and the moving parts of the machine tool are all inside the protective cover.Install double sliding protective doors in the front-end operation area, with transparent observation windows on the protective doors. The observation window is made of high-strength PC board (bulletproof polyester). The operation box is installed at the front of the machine tool, and the box body can rotate at an angle for easy operation.

3.12.Numerical Control System

The grinder adopts a German Siemens 828D Chinese display two axis CNC system, driven by an AC servo motor and driven by a ball screw. The fixed bearings at both ends are supported by dedicated screw bearings, and the motor and screw are directly connected for transmission. The AC servo motor is equipped with an absolute position encoder. The machine tool has the ability to ensure the accuracy and consistency of grinding dimensional accuracy through a single clamping process; The grinding program and grinding wheel dressing program can be automatically converted. The machine tool has manual single step operation or CNC automatic grinding cycle function, and the automatic cycle time can be adjusted by modifying the relevant parameters in the program.

QLCT fully connected machine tool warm reminder: Due to continuous design improvement, the above machine tool technical parameters are for reference only. If there are any changes in paint color, no further notice will be given. We apologize for any inconvenience caused and thank you for your cooperation!