Learn about various honing heads

Honing head type

In order to adapt to the honing requirements of different types of holes, honing heads can be divided into the following types.

1.1 Single sand strip honing rod

(Figure 1) As the name suggests, a single sand bar honing rod has only one sand bar that can be honed and cut. Therefore, there is only one sand strip groove on the honing rod, so the tool is particularly rigid. In addition, the top cone surface of the sand strip is supported by the top cone over the entire length.

The two independent systems coupled together 'top cone/feed' ensure that the honing bars are automatically forced to retreat. The asymmetrically arranged diamond or carbide guide strips on the honing rod can guide and support the honing rod.

For particularly small micro-holes, there is no need for a guide bar on the honing rod but a wear-resistant coating is applied to the back of the honing rod, thereby performing the guiding function.

1.2 Double sand strip honing rod

(Figure 2) The double sand strip honing rod is equipped with two sand strips that can be expanded. The top cone surface of the sand strip is supported by the top cone over the entire length. The two independent systems coupled together 'top cone/feed' ensure that the honing bars are automatically forced to retreat.

The double-strip honing rod with a wear-resistant coating at the lower end is guided by a lower guide sleeve. Even for small holes, double sand strip honing rods have a large honing and cutting contact area, and sometimes wide slotted honing strips are used according to processing needs.

It is mainly used in small holes and hinge honing processing, such as jet pump parts, control valve sleeves, etc.

1.3 Multi-strip honing head

(Figure 3) shows a honing head with 6 sand strips with 2 supporting top cones. The retraction of the sand strip is achieved by the retraction coil. It is mainly used in engine cylinder bore honing, hydraulic cylinder, etc.

A prominent feature of a multi-strip honing head is its versatility. Since the sand bar seat is supported by a plurality of top cones, a honing head can be used to process holes with aperture deviations up to 10 mm.

According to different needs, different numbers of sand strips can be installed on the honing head to a more or less arrangement. Because it is a multi-sand honing head, the overall cutting area of ​​the sand strip is large, so this tool can be capable of processing with large cutting amounts (such as rough honing).

1.4 Multi-sand honing head with online pneumatic measuring device

(Figure 4) Multi-sand honing heads with in-line pneumatic measurement devices are mainly used in engine cylinder bore precision honing, sliding bearings, holes with no steps with diameters greater than 13 mm, etc.

According to different needs, different number of sand strips can be installed on the honing head to a more or less arrangement, and at the same time, multiple carbide guide strips and two measurement strips with measuring nozzles can be installed on the honing head according to the different number of sand strips and the honing hole diameter.

The retraction of the sand strip is achieved by the retraction coil.

1.5 double feed platform honing head

(Figure 5) The main advantages of this tool are: one station, one spindle, and one clamping, and two different honing processes can be performed.

In addition to its obvious economic advantages, it can also ensure a stable platform surface. It is mainly used in engine cylinder bore platform honing, sliding bearings, etc.