CN2893324Y

CN2893324Y - Ball screw capable of automatic compensating gap

Info

Publication number: CN2893324Y
Application number: CN 200620100675
Authority: CN
Inventors: 夏根儿
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-01-24
Filing date: 2006-01-24
Publication date: 2007-04-25
Anticipated expiration: 2016-01-24

Abstract

The utility model relates to an automatic compensation clearance ball screw shaft that is provided to solve the current technical problems. The utility model is not only of internal circulation style, but also can automatically compensate the clearance according to the degree of wear and greatly extend the service life of the screw shaft. In addition, the utility model has the advantages of simple structure, skillful design and ease of implementation. The technical scheme to solve the problem is that: the utility model comprises a bolt and a nut that is connected to a screw of the bolt; and the utility model is characterized in that: the nut comprises a working nut and a following nut, wherein the working nut and the following nut are connected with each other through an elastic connection device clamped in the middle and a button. The utility model is mainly used for the movement of the CNC wire-cut machine and also the electrical impulse machine tool and laser carving machine and so on that require an accurate movement.

Description

The ball screw of energy automatic compensation gap

Technical field

The utility model relates to a kind of ball screw of energy automatic compensation gap.Be mainly used in moving of numerically controlled wire cutting machine working plate, also can be used for the electrical pulse lathe, on the equipment that Engraving machineslaser etc. need accurately to move.

Background technique

In numerically controlled wire cutting machine, moving of working plate finished by ball screw, the leading screw ball mostly adopts outer circulation for a long time, as shown in Figure 1, ball will be got back to initial position by the hollow Hui Zhuguan of leading screw 1 ' outside, and not only complex structure is gone back because Hui Zhuguan is exposed to the outside, do not gone with regard to returning as careless collision deformation ball, influenced the leading screw proper functioning.At this situation, engendered circuit leading screw in the ball, though solved the problems referred to above, but owing to be single nut 2 ' work, circle groove will wear and tear in time one was long, and that the precision of linear cutting machine requires is higher, generally at about several, so a rhizoid thick stick is generally used about 2 years and will be scrapped, user cost is very high.

Summary of the invention

The technical problems to be solved in the utility model is: a kind of ball screw of energy automatic compensation gap is provided, and this leading screw is not only inner circulation type, and can prolong the working life of leading screw greatly along with the degree automatic compensation gap of wearing and tearing; Simple in structure, be skillfully constructed, easy to implement.

The technological scheme that the utility model adopted is: the ball screw of energy automatic compensation gap, the nut that has screw rod and be threaded with it, it is characterized in that described nut comprises the work nut and follows nut, is formed by connecting by elastic connecting device and the key that is clipped in the middle between the two.

Described key is a flat key, is provided with at a distance of 180 ° two flat key and follow intrinsic screw between the nut.

Described elastic connecting device has the ring bush I of several open-works equably by one and is contained in the spring in the open-work and places the middle mandrel of spring to form.

Described elastic connecting device is made up of a ring bush II and a ripple bullet pad, has an annular groove on the described lining II, and ripple bullet pad is embedded in the groove.

Described elastic connecting device is made up of a ring bush III and a resilient pad, and described resilient pad equably towards several open splinters are arranged, has an annular groove on the described lining III on it ringwise, and resilient pad is embedded in the groove.

Described elastic connecting device is made up of a ring bush IV and one group of V-shaped elastic clip, has several shrinkage pools equably on the described lining IV, and elastic clip is contained in the shrinkage pool.

The beneficial effects of the utility model are: this leading screw is an inner circulation type, the not smooth existing picture of Hui Zhu can not take place, and the most significant to be nut increase to two by original one, and its advantage is can be along with the degree automatic compensation gap of wearing and tearing, prolong the working life of leading screw greatly, generally can reach 8-10; Be skillfully constructed though structure is simple, cost increases few, can promote the use of in actual production.

Description of drawings

Fig. 1 is the plan view of the utility model background technique.

Fig. 2 is the utility model embodiment 1 a plan view.

Fig. 3, Fig. 4 are work among Fig. 2 main half sectional view and the left view of nut.

Fig. 5, Fig. 6 are the main half sectional view and the left views of following nut among Fig. 2.

Fig. 7 is the plan view of key among Fig. 2.

Fig. 8 is embodiment's 1 medi-spring and mandrel and plan view.

Fig. 9 is the plan view of ring bush I among the embodiment 1.

Figure 10 is the utility model embodiment 2 a plan view.

Figure 11, Figure 12 are plan view and the left views of ring bush II among the embodiment 2.

Figure 13, Figure 14 are the plan view and the left views of ripple bullet pad among the embodiment 2.

Figure 15 is the utility model embodiment 3 a plan view.

Figure 16, Figure 17 are plan view and the left views of ring bush III among the embodiment 3.

Figure 18, Figure 19 are the plan view and the left views of resilient pad among the embodiment 3.

Figure 20 is the plan view of embodiment 4 in the utility model.

Figure 21, Figure 22 are plan view and the left views of ring bush IV among the embodiment 4.

Figure 23 is the plan view of elastic clip among the embodiment 4.

Embodiment

Embodiment 1, shown in Fig. 2,3,4,5,6,7,8,9, present embodiment has screw rod 1 and the work nut 2-1 that is threaded with it and follows nut 2-2, the work nut promptly is original nut, following nut increases newly, link to each other by 180 ° two flat keys 4 of being separated by between two nuts and drive rotation synchronously, flat key 4 and follow intrinsic screw 11 between the nut 2-2.Work nut and follow and also accompany an elastic connecting device 3 between the nut, this routine elastic connecting device have the ring bush I3-1 of 8 open-works equably by one and are contained in the helical spring 3-2 in the open-work and place the mandrel 3-3 in the middle of the spring to form.Similar screw of the shape of mandrel or rivet.

Embodiment 2, shown in Figure 10,11,12,13,14, this routine basic structure is identical with example 1, difference is that described elastic connecting device 3 is made up of a ring bush II 5 and a ripple bullet pad 6, described lining II adopts nylon to make, have an annular groove on it, ripple bullet pad 6 is embedded in the groove.

Embodiment 3, shown in Figure 15,16,17,18,19, this routine basic structure is identical with example 1, difference is that described elastic connecting device 3 is made up of a ring bush III7 and a resilient pad 8, described resilient pad ringwise, dashing equably on it has 8 open splinter 8-1, described lining III adopts nylon to make, have an annular groove on it, resilient pad 8 is embedded in the groove.

Embodiment 4, shown in Figure 20,21,22,23, this routine basic structure is identical with example 1, difference is that described elastic connecting device 3 is made up of a ring bush IV9 and one group of V-shaped elastic clip 10, described ring bush IV adopts nylon to make, have some each and every one shrinkage pools on it equably, elastic clip 10 is contained in the shrinkage pool, and its opening end is at the bottom of the hole.

Claims

1, a kind of ball screw of energy automatic compensation gap, the nut (2) that has screw rod (1) and be threaded with it, it is characterized in that: described nut (2) comprises work nut (2-1) and follows nut (2-2), is formed by connecting by elastic connecting device (3) and the key (4) that is clipped in the middle between the two.

2, ball screw that can automatic compensation gap according to claim 1, it is characterized in that: described key (4) be a flat key, is provided with apart 180 ° two, flat key and follow intrinsic screw (11) between the nut (2-2).

3, the ball screw of energy automatic compensation gap according to claim 1 and 2 is characterized in that: described elastic connecting device (3) has the ring bush I (3-1) of several open-works equably by one and is contained in the spring (3-2) in the open-work and places the middle mandrel (3-3) of spring to form.

4, the ball screw of energy automatic compensation gap according to claim 1 and 2, it is characterized in that: described elastic connecting device (3) is made up of a ring bush II (5) and a ripple bullet pad (6), have an annular groove on the described lining II (5), ripple bullet pad (6) is embedded in the groove.

5, the ball screw of energy automatic compensation gap according to claim 1 and 2 is put, it is characterized in that: described elastic connecting device (3) is made up of a ring bush III (7) and a resilient pad (8), described resilient pad ringwise, dash equably on it several open splinters (8-1) are arranged, have an annular groove on the described lining III (7), resilient pad (8) is embedded in the groove.

6, the ball screw of energy automatic compensation gap according to claim 1 and 2, it is characterized in that: described elastic connecting device (3) is made up of a ring bush IV (9) and one group of V-shaped elastic clip (10), have several shrinkage pools equably on the described lining IV (9), elastic clip (10) is contained in the shrinkage pool.