Horizontal Deep Hole Honing Machine With PLC

一,Machine Tool Performance Overview：

1.The main functions of the machine tool：

This machine tool is used for precision processing of various cylindrical deep-hole parts such as hydraulic cylinders and pistons.

It can perform either overall honing or local honing; during local honing, the taper, ellipticity and local hole diameter errors of the workpiece can be corrected.

The expansion and contraction of the honing head is controlled by a servo motor, which can achieve both constant pressure feed of the honing head and quantitative feed of the honing head.

The total feed pressure of constant pressure feed remains unchanged, but during the honing process, the roughness of the processed surface continuously decreases, and the contact points between the oilstone (also known as the honing bar) and the surface continuously increase. Thus, the unit pressure exerted by the oilstone on the surface decreases accordingly, causing the cutting effect of the oilstone to continuously decline. During the processing, when encountering high points, it processes in a constant pressure manner, thus avoiding a sudden increase in the load on the spindle motor. During the controlled uniform distribution of pressure during processing, a very excellent processing surface can be achieved, with the highest precision reaching Ra0.2.

The oilstone with quantitative feed always expands and feeds at a predetermined speed. After the honing head enters the hole, it rapidly expands close to the workpiece surface and then forces the oilstone to expand. The oilstone will generate self-sharpening effect. This feed method not only achieves a lower surface roughness but also has the ability to correct the geometric shape errors of the hole.

The combined feed method of constant pressure feed and quantitative feed can effectively improve the honing accuracy and efficiency.

All castings of the machine tool are made of high-strength cast iron and resin sand molding. All castings undergo normalizing treatment after casting to eliminate the internal stress generated during the casting process. After rough processing, they undergo normalizing treatment again to further eliminate the internal stress generated during the casting process and the processing stress generated during rough processing, so as to have good precision stability.

 

2.Machine tool processing and tool lubrication methods：

This machine tool adopts the processing method of fixing the workpiece, rotating the tool and performing feed. The workpiece is placed on the V-shaped workpiece fixing frame and locked with a pipe wrench chain; the V-shaped workpiece fixing frame can be manually adjusted to accommodate the clamping of workpieces of different diameters.

Tool oil supply method: external oil spraying, internal oil supply. For honing processing, the internal and external oil supply are respectively transported to the workpiece through the oil pump. The external oil supply directly enters the workpiece wall; the internal oil supply flows out along the gap inside the tool rod and through the honing tool to ensure that the honing oilstone has sufficient contact and achieves better lubrication and cooling effects.

 

二,Overview of the overall layout of the machine tool and the structure of its main components：

The overall layout of this machine tool: The machine tool is composed of main components such as the bed, the spindle box, the workpiece fixing frame, the honing rod support, the honing rod support bracket, the feed system, the cooling system, and the control system.

1.Lathe bed：

The bed frame is a split-type assembly. It is assembled together using high-strength bolts and is positioned by conical pins.

The spindle box is installed on the bed frame and is equipped with linear guides. The inner side of the bed frame has a rack for the reciprocating movement of the spindle box, meeting the requirements for high-speed movement in grinding.

The workpiece uses the two guide rails of the bed frame as rectangular guides. After quenching treatment, they have high wear resistance.

A protective cover is added to the outside of the guide rails, providing excellent leakage prevention performance.

 

2.Spindle box：

 

 

 

 

 

 

 

 

 

 

 

 

The spindle box is used to drive the tool to rotate and provides strong torque. The spindle box transmission system consists of a motor, transmission mechanism, etc.

The spindle box is equipped with a servo feed system for controlling the expansion and contraction of the honing tool. The servo feed system is composed of a servo motor, precision planetary reducer, ball screw, etc. The expansion and contraction of the honing head is controlled by the servo motor, which can achieve constant pressure feed of the honing head as well as quantitative feed of the honing head.

 

3.Workpiece Fixing Frame：

The workpiece holder is used for clamping the workpiece. It adopts a V-shaped structure and is controlled by a screw to move up and down.

After the workpiece is placed on the holder, it is manually locked using a pipe chain.

 

4.Honing rod support：

The honing‑rod bracket shares linear guideways with the headstock, to support the honing rod during machining.

 

5.Honing rod support bracket：

The honing-rod bracket is fixed on the workpiece bed and serves to support the honing rod during machining and measurement.

 

6.Cooling system：

The cooling system mainly uses circulating liquid media to lubricate and cool the cutting area, and at the same time remove the chips.

 

 

 

 

 

 

 

 

 

7.Main Technical Parameters of the Machine Tools

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

If you are interested, please get in touch with me.
Wendy
📧Email：deepholedrilling@dzguanlu.com
📞WhatsApp：+86 15550468204
📞WeChat：+86 18353451737

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