CN2587565Y

CN2587565Y - Mainshaft box for threading/drilling two-purpose machine

Info

Publication number: CN2587565Y
Application number: CN 02288555
Authority: CN
Inventors: 赵敏知; 翁奇鸣; 胡龙彬; 韩宝兴
Original assignee: HANGZHOU WEST LAKE DRILLING MACHINE Co Ltd
Current assignee: HANGZHOU WEST LAKE DRILLING MACHINE Co Ltd
Priority date: 2002-11-22
Filing date: 2002-11-22
Publication date: 2003-11-26
Anticipated expiration: 2012-11-22

Abstract

The utility model relates to a main shaft box for a threading/drilling two-purpose machine. The utility model is the threading/drilling two-purpose machine for threading or drilling metal work pieces, particularly the main shaft box on the machine. The utility model comprises a set of driving devices connected with a motor output shaft (3), a main shaft (9) on the upper end of which a spline is arranged, and a spline sleeve (1) connected in a loop mode to the spline of the main shaft. The spline sleeve is characterized in that power is transmitted from the driving devices for driving the main shaft to move, wherein, the upper end of the spline sleeve is arranged in a rolling bearing seat (2) of a box cover (5). The middle part of the spline sleeve is provided with a gear (7) which is driven in an engaging mode by the driving devices. The lower end of the spline sleeve is provided with an oil sealing piece (6a). The utility model is characterized in that a rolling bearing (6b) arranged at the lower end of the spline sleeve is added in a shaft seat (6) of a box body (4) in which the oil sealing piece is arranged. Thereby, the problems of processing break due to gear escaping, decrease of main shaft accuracy due to mutual squeeze between the spline sleeve and the spline, great work noises, etc. of the existing threading/drilling two-purpose machine in a processing process can be solved.

Description

Attack the main spindle box that bores dual-purpose machine

Technical field

The utility model relates to a kind of main spindle box that bores on dual-purpose machine, especially this lathe of attacking that is used for carrying out metal works tapping or boring.

Background technology

The dual-purpose machine of brill of attacking of existing band gear drive main spindle box, but it includes the gear train of one group of band gear shift shifting slide gear that is connected with motor output shaft, its upper end is had with gear train meshed gears, lower end kink by roller bearings, middle part and to be connected the spline housing in the oil seal, and kink is in spline housing and obtain the main shaft of power from spline housing.Can make main shaft obtain multiple rotating speed by the gear shift shifting slide gear, attack the required rate request of brill to satisfy difference.Its shortcoming is: 1) oil seal that is connected because of the spline housing lower end is not a rigid member, but the flexible piece of making by flexible material, so from stressed angle analysis, spline housing is a cantilever Beam part that has only the upper end to support; Therefore, when the gear in the middle part of spline housing is imported when power and motion, the reason of pressure angle makes spline housing middle part bearing radial force during owing to gear drive, this radial load also becomes unavoidably because of the existence of rolling bearing play, thereby cause spline housing crooked, especially when the gears engaged at shifting slide gear and spline housing middle part, can make progressively slip away gear on the spline housing of shifting slide gear, " escaping shelves " phenomenon that produces in the process causes cutting to be interrupted; 2) flexible structure of spline housing lower end has caused the inner spline groove of spline housing and the crowded wiping between the external splines on the main shaft, thereby has caused main shaft precise decreasing, operating noise to strengthen.

Summary of the invention

The purpose of this utility model is to overcome the shortcoming that exists in the above-mentioned prior art, the good rigidly, bearing capacity that a kind of main shaft is provided is strong attacks the main spindle box that bores dual-purpose machine so that machining accuracy is high, also makes it have characteristics such as simple and reasonable, that cutting is reliable continuously and noise is little simultaneously.

The utility model is attacked the main spindle box that bores dual-purpose machine, it includes on the spline that main shaft that transmission device, one that a cover is connected with motor output shaft have spline on it, kink be connected main shaft and from transmission device imports the spline housing of power with the drive motion of main shaft into, oil seal is equipped with in gear, lower end that wherein the upper end of spline housing is installed in the rolling bearing pedestal of case lid, the middle part has makes engaged transmission with transmission device, is characterized in: set up the bearing that is loaded on the spline housing lower end in the axle bed of the casing at oil seal place.

The utility model is attacked the main spindle box that bores dual-purpose machine, also have limit device in its feed drive gearing, this device includes a dial, the microswitch of band haptic element that casing is installed on the gear shaft that is connected pinion and rack on the position at dial place, and kink on the gear shaft and its endoporus have spring handle set, be separately positioned on the external cylindrical surface of dial and handle set and the projection that in rotation, can contact with haptic element.

The beneficial effects of the utility model are: 1) the utility model makes spline housing be changed into after the dual-gripper with upper/lower terminal by single the support, strengthened greatly spline housing at radially rigidity and bearing capacity, prevented that spline housing is crooked, thereby effectively avoid the existing phenomenon of rig work in-process of attacking because of easily " escaping shelves " and interrupt to cut; 2) effectively avoid crowded wiping between the spline on spline housing and the main shaft, thereby improved the precision of main shaft and reduced the noise that adds man-hour.

To and contrast accompanying drawing by embodiment below, the utility model will be further described below.

Description of drawings

Fig. 1 is the main cutaway view that the utility model is attacked the main spindle box that bores dual-purpose machine;

Fig. 2 is the A-A cutaway view among Fig. 1;

Fig. 3 is that B among Fig. 2 is to view.

Label declaration among the figure is as follows: the 1-spline housing; The 2-rolling bearing pedestal; The 3-motor output shaft; The 4-casing; The 5-case lid; The 6-axle bed; The 6a-oil seal; The 6b-rolling bearing; The 7-gear; The 8-sleeve; The 9-main shaft; The 9a-endoporus; The 9b-guard shield; The 10-gear shaft; The 11-dial; Projection on the 12a-dial; Projection on the 12b-handle set; The 13-handle set; The 14-handle; The 15-microswitch; The 16-haptic element; The 17-spring.

The specific embodiment

Embodiment 1. present embodiments are attacked the main spindle box that bores dual-purpose machine, its structure can see from Fig. 1, and it includes on the spline that main shaft 9 that transmission device that a cover is connected with motor output shaft 3, its upper end have spline, kink be connected the main shaft upper end and from transmission device imports the spline housing 1 of power with the rotation of drive main shaft into; Wherein the upper end of spline housing 1 is installed in the rolling bearing pedestal 2 of case lid 5, the middle part has makes the gear 7 of engaged transmission with transmission device, oil seal 6a is equipped with in the lower end of spline housing, and sets up a rolling bearing 6b who is loaded on the spline housing lower end in the axle bed 6 on the casing 4 at this oil seal place.This rolling bearing 6b is an annular bearing with rolling contact, and it makes the upper/lower terminal of spline housing that radial support all be arranged after install the lower end of spline housing, thereby strengthens the rigidity and the bearing capacity of spline housing.

The case lid 5 of main spindle box and casing 4 are connected with bolt, and transmission device all is installed in the casing; The spline of main shaft 9 is overhanging from the case lid upper end, and have guard shield 9b on the overhanging end, the lower end of main shaft has can supply machine tool accessories or cutter, drill bit for example, by sleeve 8 two thrust bearings are installed on the interlude of its interior endoporus 9a of sleeve, main shaft, are produced axial float at work to prevent spline housing.

The utility model main spindle box is when work, its power and motion are from motor output shaft 3 inputs, at this moment each gear in the transmission device is made engaged transmission successively, its middle gear 7 by with the main shaft of spline housing 1 kink on spline drive main shaft 9 and rotate, thereby make machine tool accessories or the cutter of sleeve in main shaft endoporus 9a do to bore the motion of attacking workpiece.

Embodiment 2. present embodiments are attacked the main spindle box that bores dual-purpose machine, its structure can be seen from Fig. 1～Fig. 3, also have limit device in its feed drive gearing, this device can further be seen from Fig. 2～Fig. 3, it includes a dial 11 on the gear shaft 10 that is connected pinion and rack, the microswitch 15 of the band haptic element 16 that casing is installed on the position at dial place, and kink has the handle set 13 of spring 17 on gear shaft 10 and in it, be separately positioned on the external cylindrical surface of dial and handle set and the projection 12 that in rotation, can contact with haptic element 16.When with gear shaft 10 during, when inner conical surface on the dial 11 and the male cone (strobilus masculinus) on the handle set 13 are compressed, dial 11 rotates with handle set 13, bore stroke to attack against each other and set with the ripple handle 14 clamping lever seats 13 that are threaded; As unscrew ripple handle 14, then can the inside and outside conical surface separates, dial 11 can freely rotate on gear shaft 10 making under the effect of spring 17, at this moment projection 12a on the dial and the projection 12b on the handle set promote two haptic elements 16, turn-on control circuit respectively and realize main shaft 9 positive and negative rotation, carry out deciding journey and attack the brill operation.

Claims

1, a kind of main spindle box that bores dual-purpose machine of attacking, it includes the transmission device that a cover is connected with motor output shaft (3), its upper end has the main shaft (9) of spline, kink is connected on the spline of main shaft and from transmission device and imports power into to drive the spline housing (1) of motion of main shaft, wherein the upper end of spline housing is installed in the rolling bearing pedestal (2) of case lid (5), the middle part has the gear (7) of making engaged transmission with transmission device, oil seal (6a) is equipped with in the lower end, it is characterized in that: set up the rolling bearing (6b) that is loaded on the spline housing lower end in the axle bed (6) of the casing (4) at oil seal place.

2, the main spindle box that bores dual-purpose machine of attacking according to claim 1, it is characterized in that: also have limit device in the said feed drive gearing, this device includes a dial (11), the microswitch (15) of the band haptic element (16) installed on the gear shaft (10) that is connected pinion and rack on the casing of dial position, and kink gear shaft (10) go up and its endoporus have spring (17) handle set (13), be separately positioned on the external cylindrical surface of dial and handle set and the projection (12) that in rotation, can contact with haptic element (16).