CN2488632Y

CN2488632Y - Dynamoelectric thread making machine

Info

Publication number: CN2488632Y
Application number: CN 01245257
Authority: CN
Inventors: 相浦英征
Original assignee: LIKESHI ELECTROMECHANICAL INDUSTRY Co Ltd SUZHOU
Current assignee: LIKESHI ELECTROMECHANICAL INDUSTRY Co Ltd SUZHOU
Priority date: 2001-08-06
Filing date: 2001-08-06
Publication date: 2002-05-01
Anticipated expiration: 2011-08-06

Abstract

The utility model relates to an electric thread making machine, comprising a main axis table(1), a main axis(4), a front chuck(13), a guide axis(20), a reciprocating table(18) and a capstan(21). The bottom of the main axis table(1) is provided with an electric machine(2) and a reducer(3) used for driving the main axis(4) to rotate. The utility model is characterized in that the main axis(4) is at least sleeved with two bearings(5). An inner ring of the bearing(5) is fixedly connected with the main axis, and the outer ring of the bearing(5) is fixedly connected with the main axis table(1). Because the bearing is arranged between the main axis table and the main axis, the utility model has the advantages of small frictional coefficient, little wear, small power dissipation and less heat when using for a long time. When in use, dust and small particle are incapable of entering into the matching surface between the rolling element and the race. The main axis has a high rotating accuracy.

Description

Electric pipe threading machine

The utility model relates to a kind of electric pipe threading machine in the tube surface machining screw.

In the prior art, electric pipe threading machine comprises fast headstock, be arranged at main shaft in the fast headstock, be arranged at preceding chuck on the main shaft, the axis of guide that has tooth bar in the place ahead of fast headstock, be arranged at reciprocating table on the described axis of guide, be arranged at the capstan winch on the reciprocating table, the bottom of described main shaft is provided with motor and the decelerator that drive shaft is rotated, described drive axle of motor is in transmission connection mutually with decelerator, described decelerator is in transmission connection mutually with mainshaft gear on being fixed in main shaft, makes motor drive main shaft through decelerator and rotates.Being provided with main bearing shell between present main shaft and the fast headstock supports, because directly contact and friction mutually in large area between main shaft and the main bearing shell, main bearing shell adopts powder metallurgy to make in addition, and material is loose, cause both frictional force bigger, the wearing and tearing of main bearing shell are very fast.In addition, because the die head threading machine working environment is relatively poor, die head threading machine is among dust and the granule encirclement, dust and granule enter main shaft and main bearing shell contact surface, can cause lubrication circumstances to worsen, enhance faster wear influences the running accuracy of main shaft, make the increasing of beating of the relative fast headstock of main shaft, the machining accuracy of die head threading machine reduces.

The purpose of this utility model is to provide a kind of main shaft with respect to fast headstock running accuracy height, electric pipe threading machine that frictional force is little.

The technical solution of the utility model is: a kind of electric pipe threading machine comprises fast headstock, be arranged at the main shaft in the fast headstock, be arranged at the preceding chuck on the main shaft, the axis of guide that has tooth bar in the place ahead of fast headstock, be arranged at the reciprocating table on the described axis of guide, be arranged at the capstan winch on the reciprocating table, the bottom of described main shaft is provided with motor and the decelerator that drive shaft is rotated, described drive axle of motor is in transmission connection mutually with decelerator, described decelerator is in transmission connection mutually with mainshaft gear on being fixed in main shaft, at least be with two bearings on the described main shaft, the inner ring and the main shaft of described bearing are fixedly connected, and the outer ring and the fast headstock of described bearing are fixedly connected.

The utility model compared with prior art has following advantage:

Because adopted bearing between main shaft and the fast headstock, bearing mainly contains rolling friction and the sliding friction between rolling element and the raceway, so coefficient of friction is little, it is little to wear and tear, and power consumption is little, and long-time use heating is few.The quality of fit of bearing and main shaft is higher, and dust and granule can not enter the mating surface between rolling element and the raceway, so the service life of bearing is longer, the running accuracy height of main shaft.

The utility model will be further described below in conjunction with drawings and Examples:

Accompanying drawing 1 is a perspective view of the present utility model;

Accompanying drawing 2 is the structure cutaway view that be connected of main shaft with fast headstock; Wherein:

[1], fast headstock; [2], motor; [3], decelerator; [4], main shaft; [5], bearing; [6], mainshaft gear; [7], elastic cylindrical pin; [8], back watt; [9], elastic cylindrical pin; [10], send the cutter handwheel; [11], adjusting screw(rod); [12], switch; [13], preceding chuck; [14], handle; [15], cutoff knife rack; [16], cutting knife handwheel; [17], scraper; [18], reciprocating table; [19], plug cock; [20], the axis of guide; [21], capstan winch;

Embodiment: referring to accompanying drawing 1 and accompanying drawing 2, a kind of electric pipe threading machine, comprise fast headstock [1], be arranged at the main shaft [4] in the fast headstock [1], be arranged at the preceding chuck [13] on the main shaft [4], the axis of guide that has tooth bar [20] in the place ahead of fast headstock [1], be arranged at the reciprocating table [18] on the described axis of guide [20], be arranged at the capstan winch [21] on the reciprocating table [18], the bottom of described main shaft [1] is provided with motor [2] and the decelerator [3] that drive shaft [1] is rotated, the power transmission shaft of described motor [2] is in transmission connection mutually with decelerator [3], described decelerator [3] is in transmission connection mutually with mainshaft gear [6] on being fixed in main shaft [1], at least be with two bearings [5] on the described main shaft [4], in the accompanying drawing 2 two bearings [5], inner ring of described each bearing [5] and main shaft [4] are fixedly connected, and the outer ring of described bearing [5] and fast headstock [1] are fixedly connected.

Claims

1, a kind of electric pipe threading machine, comprise fast headstock [1], be arranged at the main shaft [4] in the fast headstock [1], be arranged at the preceding chuck [13] on the main shaft [4], the axis of guide that has tooth bar [20] in the place ahead of fast headstock [1], be arranged at the reciprocating table [18] on the described axis of guide [20], be arranged at the capstan winch [21] on the reciprocating table [18], the bottom of described main shaft [1] is provided with motor [2] and the decelerator [3] that drive shaft [1] is rotated, the power transmission shaft of described motor [2] is in transmission connection mutually with decelerator [3], described decelerator [3] is in transmission connection mutually with mainshaft gear [6] on being fixed in main shaft [1], it is characterized in that: be with two bearings [5] on the described main shaft [4] at least, the inner ring of described bearing [5] and main shaft [4] are fixedly connected, and the outer ring of described bearing [5] and fast headstock [1] are fixedly connected.