CN104196884A - Repairing method of sliding bearing bush of cylindrical grinding machine - Google Patents

Abstract

The invention discloses a repairing method of a sliding bearing bush of a cylindrical grinding machine. The repairing method comprises the following steps: (1) one layer of a sliding copper layer surface of a waste bearing bush is removed on a slotting machine; one part of the copper layer is remained without being removed; and 2 mm of the copper layer at the final part is not required to be removed; (2) the removed surface is cleaned, and is bonded and filled with a polyfluortetraethylene plate; and (3) the bearing bush bonded and filled with the polyfluortetraethylene plate is normally scraped to achieve the technical requirements. The repairing method of the bearing bush, provided by the invention, can be applied to the novel equipment production, so that the cost is reduced, the shaft abrasion is relieved, the service life is prolonged, and the production efficiency is largely improved.

Description

A kind of restorative procedure of external cylindrical grinding machine Sliding bush

Technical field

The present invention relates to a kind of restorative procedure of external cylindrical grinding machine Sliding bush.

Background technique

The bush material using on round grinding machine that is out at present is bronze.The long-term use of cu bearing liner most common failure (1) produces wearing and tearing, and axle there is excessive gap simultaneously, surface of contact is inhomogeneous, causes bearing shell distortion; (2) because of insufficient lubrication or oily inferior, make can not form oil film between axle and bearing shell, produce dry friction, make bearing shell locking or burn; (3) lubricant oil is unclean, contains metal or impurity, makes bearing shell grind out groove etc.; (4) assemble improper cause mechanical deterioration or damage.Need to change so have a lot of bearing shells in device maintenance process, these bearing shell expenses are very high, also waste a large amount of non-ferrous metals, and affect manufacturing efficiency.In new machine manufacture process, use equally some new bearing shells, the self-lubricating property of these bearing shells does not reach desirable job requirement.To the serious wear of axle.

Summary of the invention

The technical problem to be solved in the present invention is, in order to overcome some shortcomings of existing bearing shell, to enhance productivity, a kind of restorative procedure of external cylindrical grinding machine Sliding bush is provided, and can use in new device fabrication, not only cost-saving, manufacturing efficiency also significantly improves simultaneously.

The technological scheme adopting is:

A restorative procedure for external cylindrical grinding machine Sliding bush, comprises the following steps:

Step 1 is inserted waste and old bearing shell to remove one deck by slip copper aspect on slotting machine, retain a part of copper layer and do not insert, and in the end portion stays 2mm copper layer to insert;

Step 2 will be inserted the surface treatment of the going filled polytetrafluoroethylene plate that totally bonds;

The bearing shell normal scraping of step 3 to bonding filled polytetrafluoroethylene plate, reaches technical requirements.

Above-mentioned restorative procedure also can be used in new device fabrication.

The invention has the beneficial effects as follows:

The restorative procedure technique of this kind of bearing shell is simple, cost-saving, and reliability is high, long service life, and reduced the wearing and tearing of axle, and reduce maintenance frequency, enhance productivity.

Brief description of the drawings

Fig. 1 is restorative procedure schematic diagram of the present invention.

Embodiment

A restorative procedure for external cylindrical grinding machine Sliding bush, comprises the following steps: (see figure 1)

Step 1 is inserted waste and old bearing shell 1 to remove one deck by slip copper aspect 3 on slotting machine, retain a part of copper layer and do not insert, and in the end portion stays 2mm copper layer to insert, and inserting and going the surface roughness of part is 25;

Step 2 will be inserted the surface treatment of the going filled polytetrafluoroethylene plate 2 that totally bonds, thickness of slab 0.6mm;

The bearing shell normal scraping of step 3 to bonding filled polytetrafluoroethylene plate, reaches technical requirements.

Because filled polytetrafluoroethylene is commonly called as " plastics prince ", high low temperature resistance range is wide, and chemical inertness and friction factor are little.Self-lubricating property is good, so because the very thin thickness of filling has overcome the large shortcoming of linear expansion coeffcient.Like this wearing and tearing of axle are weakened greatly the working life of extending shaft.(as shown in Figure 1).

Claims (2)

1. a restorative procedure for external cylindrical grinding machine Sliding bush, is characterized in that comprising the following steps:

Step 1 is inserted waste and old bearing shell to remove one deck by slip copper aspect on slotting machine, retain a part of copper layer and do not insert, and in the end portion stays 2mm copper layer to insert;

Step 2 will be inserted the surface treatment of the going filled polytetrafluoroethylene plate that totally bonds;

The bearing shell normal scraping of step 3 to bonding filled polytetrafluoroethylene plate, reaches technical requirements.

2. the restorative procedure of a kind of external cylindrical grinding machine Sliding bush according to claim 1, is characterized in that described restorative procedure also can be used in new device fabrication.