阅读说明：本技术 一种分度头抱紧装置 (Dividing head holding device ) 是由 吴长江 张树财 黄耀明 于跃 林文森 何庆洋 于 2019-10-22 设计创作，主要内容包括：本发明公开一种分度头抱紧装置,所述的装置包括套接在分度头主轴上的刹车盘,所述刹车盘通过涨套与分度头主轴固定,同时涨套的一侧还设置有螺纹连接在分度头主轴上的备紧螺母,所述分度头主轴通过轴承转动支撑在外套内,所述刹车盘的外缘处设置有多个在圆周方向上均匀分布的抱紧机构,且所述的抱紧机构设置在外套上,所述抱紧机构包括分别活动连接在工作腔中的两个活塞,这两个活塞朝向刹车盘的一侧都设置有顶柱,所述工作腔的端部还固定设置有端盖,所述顶柱活动穿接在开设于端盖上的过孔中,在顶柱外还套接有弹簧,所述弹簧的两端分别顶在活塞和端盖上,所述外套内还开设有油路,所述油路将工作腔和开设在外套外壁上的进油口相互连通起来。(The invention discloses a dividing head holding device, which comprises a brake disc sleeved on a main shaft of a dividing head, wherein the brake disc is fixed with the main shaft of the dividing head through an expansion sleeve, one side of the expansion sleeve is also provided with a standby nut in threaded connection with the main shaft of the dividing head, the main shaft of the dividing head is rotatably supported in a jacket through a bearing, the outer edge of the brake disc is provided with a plurality of holding mechanisms which are uniformly distributed in the circumferential direction, the holding mechanisms are arranged on the jacket, each holding mechanism comprises two pistons respectively and movably connected in a working cavity, one sides of the two pistons facing the brake disc are both provided with ejection columns, the end part of the working cavity is also fixedly provided with an end cover, the ejection columns are movably penetrated in through holes opened in the end covers, springs are sleeved outside the ejection columns, and the two ends of the springs are respectively ejected on the pistons and the end covers, an oil path is further formed in the outer sleeve and communicates the working cavity with an oil inlet formed in the outer wall of the outer sleeve.)

1. The utility model provides a dividing head cohesion device which characterized in that: the device comprises a brake disc (2) sleeved on a dividing head main shaft (1), the brake disc (2) is fixed with the dividing head main shaft (1) through an expansion sleeve (3), a tightening nut (4) in threaded connection with the dividing head main shaft (1) is further arranged on one side of the expansion sleeve (3), the dividing head main shaft (1) is rotatably supported in an outer sleeve (6) through a bearing (5), a plurality of tightening mechanisms which are uniformly distributed in the circumferential direction are arranged at the outer edge of the brake disc (2), and the tightening mechanisms are arranged on the outer sleeve (6),

hold mechanism tightly including two pistons (7) of difference swing joint in the working chamber, these two pistons (7) all are provided with fore-set (8) towards one side of brake disc (2), the tip of working chamber still fixedly is provided with end cover (9), fore-set (8) activity is worn to connect in seting up the via hole on end cover (9), has still cup jointed spring (10) outside fore-set (8), the both ends of spring (10) are pushed up respectively on piston (7) and end cover (9), oil circuit (11) have still been seted up in overcoat (6), oil circuit (11) communicate working chamber and oil inlet (12) of seting up on overcoat (6) outer wall each other.

Technical Field

The invention relates to an auxiliary device for machining, in particular to a dividing head holding device.

Background

In the use process of the dividing head, even if the dividing head is in a stop state, external force acting on a workpiece can be conducted to a main shaft of the dividing head, and when the main shaft of the dividing head bears radial force, the force can be directly transmitted to the motor, so that the service life of the motor is influenced, and unnecessary loss is caused. There is therefore a need for a method or apparatus that addresses the above-mentioned problems.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides the holding device which is simple in structure, ingenious in design and reasonable in layout, and can hold a brake disc tightly through a friction plate after shutdown, so that an external force is prevented from being transmitted to a motor shaft by a main shaft of a dividing head.

The technical solution of the invention is as follows: the utility model provides a dividing head cohesion device which characterized in that: the device comprises a brake disc 2 sleeved on a dividing head main shaft 1, the brake disc 2 is fixed with the dividing head main shaft 1 through an expansion sleeve 3, a tightening nut 4 in threaded connection with the dividing head main shaft 1 is further arranged on one side of the expansion sleeve 3, the dividing head main shaft 1 is rotatably supported in an outer sleeve 6 through a bearing 5, a plurality of tightening mechanisms which are uniformly distributed in the circumferential direction are arranged at the outer edge of the brake disc 2, the tightening mechanisms are arranged on the outer sleeve 6,

the clasping mechanism comprises two pistons 7 which are respectively movably connected in a working cavity, a top post 8 is arranged on one side of each piston 7 facing the brake disc 2, an end cover 9 is fixedly arranged at the end part of the working cavity, the top post 8 is movably connected in a through hole formed in the end cover 9 in a penetrating mode, a spring 10 is further sleeved outside the top post 8, two ends of the spring 10 are respectively propped against the pistons 7 and the end cover 9, an oil way 11 is further formed in the outer sleeve 6, and the oil way 11 is used for mutually communicating the working cavity and an oil inlet 12 formed in the outer wall of the outer sleeve 6.

Compared with the prior art, the invention has the following advantages:

this kind of structural style's dividing head cohesion device, a structure is simple, design benefit, and reasonable in layout, it can receive the external force of being transmitted by the main shaft to traditional dividing head in the use, and lead to the problem that life-span reduces even direct damage, design one kind can be directly with dividing head main shaft cohesion structure after shutting down, it lets the fore-set closely compress tightly with the brake disc of connection on the main shaft through hydraulic pressure, through this kind of mode with main shaft and overcoat fixed connection, even if so the main shaft atress, strength also can be undertaken by the overcoat, can not influence the main shaft of motor. The device has the advantages of simple manufacturing process and low manufacturing cost, so the device has various advantages, is particularly suitable for popularization and application in the field, and has very wide market prospect.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a side view of an embodiment of the present invention.

Fig. 3 is an enlarged view of a portion a in fig. 1.

Detailed Description

The following description will explain embodiments of the present invention with reference to the accompanying drawings. As shown in fig. 1, 2, and 3: a dividing head holding device comprises a brake disc 2 sleeved on a dividing head main shaft 1, the brake disc 2 is fixed with the dividing head main shaft 1 through an expansion sleeve 3, a standby tightening nut 4 in threaded connection with the dividing head main shaft 1 is further arranged on one side of the expansion sleeve 3, the dividing head main shaft 1 is rotatably supported in an outer sleeve 6 through a bearing 5, a plurality of holding mechanisms uniformly distributed in the circumferential direction are arranged at the outer edge of the brake disc 2, the holding mechanisms are arranged on the outer sleeve 6,

the clasping mechanism comprises two pistons 7 which are respectively movably connected in a working cavity, a top post 8 is arranged on one side of each piston 7 facing the brake disc 2, an end cover 9 is fixedly arranged at the end part of the working cavity, the top post 8 is movably connected in a through hole formed in the end cover 9 in a penetrating mode, a spring 10 is further sleeved outside the top post 8, two ends of the spring 10 are respectively propped against the pistons 7 and the end cover 9, an oil way 11 is further formed in the outer sleeve 6, and the oil way 11 is used for mutually communicating the working cavity and an oil inlet 12 formed in the outer wall of the outer sleeve 6.

The working process of the dividing head holding device provided by the embodiment of the invention is as follows: when the dividing head main shaft 1 stops rotating, a hydraulic system fills hydraulic oil into an oil path 11 through a plurality of oil inlets 12, the hydraulic oil enters a working cavity through the oil path 11 and pushes a piston 7 to move towards the direction of a brake disc 2, the end part of a top post 8 is in contact with the side surface of the brake disc 2 (a spring 10 is compressed) under the driving of the piston 7, all the clasping mechanisms act simultaneously, the brake disc 2 is fastened under the action of a plurality of pairs of top posts 8, and at the moment, if the dividing head main shaft 1 bears external force, the external force can be transmitted to an outer sleeve 6 under the action of the plurality of clasping mechanisms, so that a motor connected with the dividing head main shaft 1 is protected;

when the dividing head main shaft 1 needs to work, a hydraulic system controls hydraulic oil to be discharged from a working cavity and an oil way 10, a spring 10 in a compressed state can push a piston 7 to move reversely, the section of a top column 8 is separated from a brake disc 2, and after the brake disc 2 recovers the degree of freedom, the dividing disc main shaft 1 can rotate again.