CN201189607Y

CN201189607Y - Floor milling and boring heads of milling shaft built-in boring bar

Info

Publication number: CN201189607Y
Application number: CNU200820070714XU
Authority: CN
Inventors: 宋保通
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-05-26
Filing date: 2008-05-26
Publication date: 2009-02-04
Anticipated expiration: 2018-05-26

Abstract

The utility model relates to a floor type boring and milling head for a boring rod provided with a milled spindle inside, which can effectively solve the problems that the floor type boring and drilling head is difficult to manufacture and the machining accumulated error is great. The technical proposal for solving the problems is as follows: the floor type boring and milling head comprises a ram seat, the boring rod, a square ram and the milled spindle, wherein the square ram is arranged on the ram seat; the milled spindle is supported in two ends of the boring rod through a bearing; the right end of the milled spindle is provided with an end gear engaged with a transmission gear on a transmission splined shaft; the end gear rotates performs boring, milling and cutting through rotation of the milled spindle and the transmission splined shaft; a screw rod is arranged on the boring rod through a nut; and end parts of the boring rod and the milled spindle are respectively provided with a boring rod feeding assembly, so as to form linear cutting and feeding transmission of the boring rod and the milled spindle. The floor type boring and milling head has the advantages of novel and unique structure, easy production, low cost, high efficiency, and the improvement of machining efficiency and machining precision, and is an innovation of the floor type boring and milling head.

Description

A kind of boring spindle built-in milled spindle floor type boring and milling head

One, technical field

The utility model relates to mechanical field, particularly a kind of boring spindle built-in milled spindle floor type boring and milling head.

Two, background technology

The large floor boring and milling machine is the basic equipment of mechanical industry, along with the great development of Chinese national economy, demand was more and more prosperous in recent years, and China has only state-owned heavy duty machine tools enterprise of original a few family to produce, limited because of the design of original production ability, all put into high gear also not satisfy the market demand.These several years lathe distributors also do not satisfy the market demand from very most of old floor-type milling ﹠ boring machine of coming in abroad again.Because the boring bar manufacture difficulty of large floor boring and milling machine boring head is too big, too complicated, most of large-scale private enterprises are entered several times and fail, the technical specialist of national this respect also has only ten, all serves as important position in large-scale state-owned enterprise.The boring and milling head outer milling spindle of existing floor-type milling ﹠ boring machine is the boring bar external, boring bar had both been rotated also do the straight-line feed motion, the machining accuracy of machine part all concentrates on the boring bar, because it is too big that back-up roller dynamic bearing restriction boring bar diameter can not be done, so intensity is little, low precision, efficient is low, cumulative errors are difficult to guarantee, are difficult to produce and maintenance, have influenced Development in Machine Industry greatly.

Three, utility model content

At above-mentioned situation, the purpose of the utility model just provides novel a kind of boring spindle built-in milled spindle floor type boring and milling head, can effectively solve difficult manufacturing of boring and milling head outer and the big problem of processing cumulative errors of landing, the technical scheme of its solution is, include the ram seat, boring bar, side's ram and milling spindle, side's ram places on the ram seat, milling spindle by bearings in the boring bar two ends, the milling spindle right-hand member have with the drive splines axle on the end tooth wheel that is meshed of travelling gear, by milling spindle and the rotation of drive splines axle, carry out the boring and milling cutting, screw mandrel is contained on the boring bar by nut, boring bar feeding assembly (propulsion electric machine) is equipped with in boring bar and milling spindle end, the linear interpolation that constitutes boring bar and milling spindle feeds transmission, the utility model novel structure uniqueness, easily produce, cost is low, the efficient height, particularly the boring head milling spindle rotates in boring bar, a boring bar feeding is not rotated, and milling spindle is all the time in boring bar one end rotation, and in fact boring bar and square ram have become a fulcrum of milling spindle equally, thereby greatly reduce the manufacture difficulty of boring bar, the boring bar external diameter is easy to do greatly owing to there is not the restriction of milling spindle bearing, can improve 3 grades of intensity and cutting output, and raise the efficiency and machining accuracy, be to land the innovation greatly of one on the boring and milling head outer.

Four, description of drawings

Fig. 1 is a structural front view of the present utility model.

Fig. 2 be among the utility model Fig. 1 A-A to view.

Five, the specific embodiment

Below in conjunction with accompanying drawing the specific embodiment of the present utility model is elaborated.

Provide by Fig. 1, Fig. 2, its structure of the utility model is, include ram seat, boring bar, square ram and milling spindle, side's ram 1 places on the ram seat 14, milling spindle 4 is supported in boring bar 2 two ends by bearing 6,7, milling spindle 4 right-hand members have with drive splines axle 10 on the end tooth wheel 9 that is meshed of travelling gear 8, by milling spindle and the rotation of drive splines axle, carry out the boring and milling cutting, screw mandrel 12 is contained on the boring bar 2 by nut 13, boring bar feeding assembly 11 (propulsion electric machine) is equipped with in boring bar and milling spindle end, and the linear interpolation that constitutes boring bar and milling spindle feeds transmission.

In order to guarantee result of use, device has fixture 5 between said side's ram 1 and the boring bar 2; Said boring bar 2 is on boring bar splicing sleeve 3 side's of being contained in rams 1.

Working condition of the present utility model is, the boring head milling spindle rotates in boring bar, a boring bar feeding is not rotated, milling spindle is all the time in boring bar one end rotation, and in fact boring bar and square ram have become a fulcrum of milling spindle equally, greatly reduces the manufacture difficulty of boring bar from face, the boring bar external diameter is not owing to there is the restriction of milling spindle bearing, be easy to do greatly, thereby improve 3 grades of intensity and cutting output, raise the efficiency and machining accuracy.

Show by above-mentioned situation, novel boring spindle built-in milled spindle floor type boring and milling head and traditional boring bar external milling spindle are different fully, in onesize square ram 1, can enlarge 3 grades of boring bar diameter and improve 2 grades of boring bar precision, improve boring bar intensity, improve boring and milling efficient more than 3 times.Tradition boring and milling head outer boring bar had both rotated in milling spindle the inside and had also made the feeding straight line.Because it is too big that back-up roller dynamic bearing restriction boring bar diameter can not be done, so intensity is little, low precision, efficient is low, and boring bar manufacturing and repairing are very complicated, and the whole nation has only large enterprise of a few family can produce this boring bar.Novel boring bar spindle built-in milled spindle floor type boring boring and milling head outer boring bar does not rotate only does the straight-line feed motion, so the boring bar precision ensures easily, mechanical processing quality is good, the precision height, for mechanical retrofit provides advanced equipment, be that one on the machining equipment innovated greatly, remarkable economical and social benefit are arranged.

Claims

1, a kind of boring spindle built-in milled spindle floor type boring and milling head, include the ram seat, boring bar, side's ram and milling spindle, it is characterized in that, side's ram (1) places on the ram seat (14), milling spindle (4) is by bearing (6,7) be supported in boring bar (2) two ends, milling spindle (4) right-hand member have with drive splines axle (10) on the end tooth wheel (9) that is meshed of travelling gear (8), by milling spindle and the rotation of drive splines axle, carry out the boring and milling cutting, screw mandrel (12) is contained on the boring bar (2) by nut (13), boring bar feeding assembly (11) is equipped with in boring bar and milling spindle end, and the linear interpolation that constitutes boring bar and milling spindle feeds transmission.

2, a kind of boring spindle built-in milled spindle floor type boring and milling head according to claim 1 is characterized in that, device has fixture (5) between said side's ram (1) and the boring bar (2).

3, a kind of boring spindle built-in milled spindle floor type boring and milling head according to claim 1 is characterized in that, said boring bar (2) is on boring bar splicing sleeve (3) side's of being contained in ram (1).