4+6 spindle combined type special multi-spindle drilling machine for riser bus bar groups of aluminum electrolysis cells

Abstract

The invention discloses a 4+6 spindle combined type special multi-spindle drilling machine for riser bus bar groups of aluminum electrolysis cells. The drilling machine comprises a door type machine frame, wherein the machine frame comprises a bottom plate, a top plate and side vertical plates on the two sides, a polished shaft supporting plate is fixedly connected to the inner sides of the side vertical plates, a set of guiding polished shafts are installed between the front of the machine frame and the polished shaft supporting plate, another set of guiding polished shafts are installed between the top plate in the back of the machine frame and the polished shaft supporting plate, and a set of the guiding polished shafts in the front of the machine frame and a set of the guiding polished shafts in the back of the machine frame are provided with gear case supports; a four-shaft gear case and a six-shaft gear case are installed in the gear case supports from the lower part and are fixed to the gear case supports through connecting bolts, and the position layouts of working shafts of the four-shaft gear case and the six-shaft gear case are identical with hole sites of the riser bus bar groups; the six-shaft gear case can be installed in the mode of being turned by 45 degrees; and drill bits are installed at the lower ends of the working shafts, power motors driving the working shafts are arranged on the gear case supports, and a feeder driving the gear case supports to move up and down is arranged on the top plate. The drilling machine is compact in structure and can realize continuous machining, and the gear cases are easy to replace and are good in universality.

Description

technical field [0001] The invention belongs to the field of non-ferrous metal processing and manufacturing, and is applied to the drilling of column busbar groups in the production and installation of large-scale prebaked anode aluminum electrolytic cells. Dedicated multi-spindle drilling machine. Background technique [0002] An electrolytic aluminum plant generally has hundreds of prebaked anode aluminum electrolytic cells, and the power supply side of a large prebaked anode aluminum electrolytic cell is generally installed with 6 to 7 sets of column busbar groups. Each set of column busbars contains 2 pieces of column busbars (type A and type B, material: aluminum), 2 pieces of plywood busbars (type A and type B, material: aluminum) and 2 pieces of short-circuit busbars (material: aluminum), these 6 pieces Bolt connection holes need to be processed on the busbar, and they are assembled together by connecting bolts, and then installed on the power supply side of the alum...

AI Technical Summary

Problems solved by technology

The disadvantages of this method are: 1. The work of aligning the holes (the drill bit is aligned with the designed hole position) is cumbersome, and the number of upper and lower processing stations of the workpiece is many (a workpiece with two specifications of holes needs to be changed between different drilling machine processing stations. position, or it is necessary to continuously replace drill bits of different specifications on the same radial drilling machine), it takes a long time to lift the lifting equipment, not only the production efficiency is extremely low, but also the hole position accuracy is low, the shape and position error is high, and directly affect the follow-up (It often happens that the connecting bolts between the workpieces cannot pass through the connecting bolt holes smoothly); Second, the structure of the radial drilling machine is relatively complicated, coupled with the poor construction site conditions, rough operation and maintenance of the equipment If it is not in place, the failure rate of the radial drilling machine will rise sharply after a period of use, which will not only greatly increase the maintenance cost (generally, it is necessary to invite professional maintenance personnel to enter the site for maintenance), but also seriously affect the progress of the project

When there are multiple radial drilling machines (generally more than 4) operating at the same time on the job site, the maintenance of the radial drilling machine has become the norm in daily work; 3. Due to the low production efficiency, it is necessary to use more The drilling equipment must work at the same time to meet the requirements of the construction progress, which leads to high investment in equipment, a large occupation of the work site, a large number of operators, and high labor costs.

[0007] In very few cases, the practical application of 4-axis drilling can be seen, but the device is too simple, and most of them belong to the secondary transformation of other old waste machine tools. Not only the processing accuracy is low, but also there is only one fixed processing station. So far, it is only suitable for single-piece processing of short-circuit busbars, column busbars and splint busbars still need to be processed by radial drilling machines, and the improvement of the situation of low production efficiency is very limited.

[0008] In the prior art, there are also practical applications of six-axis drilling machines in the processing of column busbars of electrolytic cells, but they have not been able to simultaneously process column busbars (type A, type B), splint busbars (type A, type B) and short-circuit busbars. Multi-axis drilling machine for multi-axis drilling, and the existing six-axis drilling machine cannot easily replace the gearbox, and cannot adapt to the drilling of electrolytic cell column busbar groups with different specifications. The versatility is poor, and the existing six-axis drilling machine does not have matching The feeding mechanism cannot avoid the hole alignment process, the hole position accuracy cannot be effectively improved, the labor intensity of the operator is also high, and the hoisting equipment still occupies a lot during the processing

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