Movable low-speed driller

Abstract

The invention belongs to the field of machining, and relates to a driller, in particular to a movable low-speed driller. A center drill rod driving reduction device (5) comprises a driving motor (5-1), a driving motor controller (5-2), a driving gear (5-3), a driving gear shaft (5-4), a driving gear bearing (5-5), a driving gear bearing pedestal (5-6), middle gears (5-7), middle gear shafts (5-8), middle gear bearings (5-9), middle gear bearing pedestals (5-10), a driven gear (5-11), a driven gear shaft (5-12), a driven gear bearing (5-13) and a driven gear bearing pedestal (5-14), and is characterized in that the driven gear shaft (5-12) is a hollow shaft; an inner hole of the driven gear shaft (5-12) is provided with a spline; and the spline inner hole is in sliding fit with a spline shaft at the upper end of a center drill rod. The movable low-speed driller has the benefits that the movable low-speed driller is high in drilling accuracy, good in movability and adjustable in rotating speed, and can be absorbed on a large workpiece for use.

Description

Technical field: [0001] The invention relates to a drilling machine, in particular to a movable low-speed drilling machine, which belongs to the field of mechanical processing. technical background: [0002] So far, the bench drills, radial drills and magnetic base drills disclosed on the market have high drilling precision and convenient operation, while the magnetic base drill has the advantages of good moving performance, etc., which are recognized and recognized by the mechanical field. is widely used. However, they have their own shortcomings in special occasions. For example, bench drills and rocker drills are generally fixed in the workshop. When drilling, the workpiece is clamped on the platform. If a large workpiece is encountered, it cannot be clamped. If it is held on its platform, it shows that the bench drill and radial drill have poor mobility. Another example is the magnetic base drill. The drilling is completed by the up and down movement of the driving mot...

AI Technical Summary

Problems solved by technology

However, they have their own shortcomings in special occasions. For example, bench drills and rocker drills are generally fixed in the workshop. When drilling, the workpiece is clamped on the platform. If a large workpiece is encountered, it cannot be clamped. It is held on its platform, which shows that the bench drill and radial drill have poor mobility

Another example is the magnetic base drill. The drilling is completed by the up and down movement of the driving motor. If the fit is too tight, the resistance during drilling will be too large. If the dovetail groove fits too loosely, the drilling accuracy will not be guaranteed if the drill bit swings left and right. This shows that the drilling accuracy of the magnetic base drill is poor.

Another example is that the speed of ordinary bench drills and magnetic base drills is too high and cannot be adjusted.

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