阅读说明：本技术 一种同时调整涡轮蜗杆与齿轮齿条间隙的偏心机构 (Eccentric mechanism capable of adjusting clearance between worm gear and worm and gear rack simultaneously ) 是由 于建斌 于 2021-08-03 设计创作，主要内容包括：本发明提供一种同时调整涡轮蜗杆与齿轮齿条间隙的偏心机构,属于机械技术领域,包括齿轮、齿条、进给传动涡轮、进给传动蜗杆以及偏心套筒,所述进给传动涡轮与所述齿轮通过偏心套筒进行连接,所述齿轮与齿条之间进行齿啮合,所述进给传动涡轮与进给传动蜗杆之间进行齿啮合,所述进给传动涡轮与进给传动蜗杆的运行通过伺服电机经过进给机构进行控制。本发明的齿轮齿条间隙与进给传动蜗杆涡轮间隙是靠安装在托板上的偏心套筒同时调整,此项结构简单易懂,安装调试方便；差速器安装在两进给传动蜗杆中间,两进给传动蜗杆涡轮不同步时差速器来弥补微量间隙。(The invention provides an eccentric mechanism capable of adjusting gaps between a worm gear and a worm and a gear rack simultaneously, which belongs to the technical field of machinery and comprises a gear, a rack, a feeding transmission worm gear, a feeding transmission worm and an eccentric sleeve, wherein the feeding transmission worm gear is connected with the gear through the eccentric sleeve, the gear and the rack are in tooth meshing, the feeding transmission worm gear and the feeding transmission worm are in tooth meshing, and the operation of the feeding transmission worm gear and the feeding transmission worm is controlled through a servo motor through a feeding mechanism. The gear rack clearance and the feeding transmission worm and worm wheel clearance are simultaneously adjusted by the eccentric sleeve arranged on the supporting plate, the structure is simple and easy to understand, and the installation and the debugging are convenient; the differential mechanism is arranged between the two feeding transmission worms, and the differential mechanism is used for compensating the micro clearance when the two feeding transmission worm worms and the worm wheel are asynchronous.)

1. The utility model provides an eccentric mechanism in simultaneous adjustment worm gear and rack and pinion clearance which characterized in that: including gear (8), rack (9), feed drive worm wheel (5), feed drive worm (6) and install eccentric sleeve (10) on the layer board, feed drive worm wheel (5) with gear (8) are connected through eccentric sleeve (10), carry out the tooth meshing between gear (8) and rack (9), feed drive worm wheel (5) and feed and carry out the tooth meshing between drive worm (6), the operation of feeding drive worm wheel (5) and feeding drive worm (6) is controlled through servo motor (1) through feed mechanism.

2. The eccentric mechanism for simultaneously adjusting the clearance between the worm gear and the rack as claimed in claim 1, wherein: the feeding mechanism comprises a gear shaft, a speed reducing shaft, a differential structure (7) and two sets of feeding systems; the servo motor (1) is connected with a gear shaft and controls the rotation of the gear shaft, a gear shaft gear (2) is arranged on the gear shaft in a matching mode, two ends of the speed reducing shaft are respectively matched with and provided with a speed reducing wheel (3), the gear shaft gear (2) is in gear meshing with one of the speed reducing wheels (3), the other speed reducing wheel (3) is in gear meshing with a gear on a differential structure (7), two ends of the differential structure are respectively connected with a feeding transmission worm (6), and the feeding transmission worm (6) is in matched meshing with a feeding transmission turbine (5).

3. The eccentric mechanism for simultaneously adjusting the clearance between the worm gear and the rack as claimed in claim 2, wherein: the turbines (5) and the worms (6) of the two feeding systems are in left-handed and right-handed rotation.

4. The eccentric mechanism for simultaneously adjusting the clearance between the worm gear and the rack as claimed in claim 1, wherein: the servo motor (1) is a stepless speed regulation servo motor.

5. The eccentric mechanism for simultaneously adjusting the clearance between the worm gear and the rack as claimed in claim 4, wherein: the stepless speed regulation servo motor selects 0-5 m feeding stepless speed regulation.

6. The eccentric mechanism for simultaneously adjusting the clearance between the worm gear and the rack as claimed in claim 1, wherein: an encoder is installed on the rack (9), and the servo motor (1) is controlled by an external encoder.

7. The eccentric mechanism for simultaneously adjusting the clearance between the worm gear and the rack as claimed in claim 2, wherein: the differential structure (7) is selected from a differential.

Technical Field

The invention belongs to the technical field of mechanical equipment, and particularly relates to an eccentric mechanism capable of adjusting the clearance between a worm gear and a worm and a gear rack simultaneously.

Background

The TK series numerical control intelligent deep hole machine tool is a brand new intelligent deep hole machine tool, unmanned operation of the machine tool can be achieved through an intelligent management system in a factory, a lead screw feeding system of the existing T21 series deep hole machine tool is in lead screw transmission, a lead screw rotates to drive a supporting plate to move during cutting to achieve cutting of a cutter, a lead screw nut rotates at a high speed to achieve quick cutter withdrawal during cutter withdrawal, the nut is made of 6-6-3 copper, the nut is damaged quickly after being used for a long time, and replacement is troublesome, so the feeding system is usually selected to be gear transmission, but the gear transmission cannot achieve the same precision due to the fact that worm and turbines of the gear transmission are fed, and the defect of transmission errors can occur.

Disclosure of Invention

In order to solve the above technical problems, an object of the present invention is to provide an eccentric mechanism for simultaneously adjusting a gap between a worm gear and a rack gear, so as to solve the above problems, the gap between the rack gear and the worm gear of a feed driving worm according to the present invention is simultaneously adjusted by an eccentric sleeve mounted on a supporting plate, and the structure is simple and easy to understand, and is convenient to install and debug; the feeding system is a double-rack transmission controlled by an external encoder, a servo motor drives a supporting plate to move to realize the cutting function of a cutter, the servo motor is transmitted to a feeding transmission worm after being decelerated by a gear, the feeding transmission worms on two sides are of a differential structure, the differential is used for solving the problem that two racks are asynchronous, two sets of feeding transmission worm turbines with the same design cannot have the same precision, the precision cannot be the same due to the addition of the gear and the rack, the error is increased when the feeding transmission worm turbines are added together, the creeping phenomenon can occur when a machine tool dragging plate is used for a long time, the differential is installed between the two feeding transmission worms, and the differential compensates for a micro gap when the two feeding transmission worm turbines are asynchronous.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides an eccentric mechanism in simultaneous adjustment turbine worm and rack and pinion clearance, includes gear, rack, feeds the drive turbine, feeds drive worm and eccentric sleeve, feed the drive turbine with the gear is connected through eccentric sleeve, carry out the tooth meshing between gear and the rack, feed the drive turbine and feed and carry out the tooth meshing between the drive worm, the operation of feeding the drive turbine and feeding the drive worm is controlled through servo motor through feed mechanism.

Preferably, the feeding mechanism comprises a gear shaft, a speed reduction shaft, a differential structure and two sets of feeding systems; the servo motor is connected with a gear shaft and controls rotation of the gear shaft, a gear shaft gear is arranged on the gear shaft in a matching mode, speed reducing wheels are arranged at two ends of the speed reducing shaft in a matching mode respectively, the gear shaft gear is in gear meshing with one of the speed reducing wheels, the other speed reducing wheel is in gear meshing with a gear on a differential structure, two ends of the differential structure are connected with feed transmission worms respectively, and the feed transmission worms are in matching meshing with the feed transmission turbines.

Preferably, the worm wheels and the worms of the two feeding systems rotate leftwards and rightwards respectively.

Preferably, the servo motor is a stepless speed regulation servo motor.

Preferably, the stepless speed regulation servo motor selects the stepless speed regulation of feeding of 0-5 meters.

Preferably, an encoder is mounted on the rack, and the servo motor is controlled by an external encoder.

Preferably, the differential structure is selected from a differential.

The invention has the beneficial effects that:

1) the gear rack clearance and the feeding transmission worm and gear clearance are simultaneously adjusted by the eccentric sleeve arranged on the supporting plate, and the structure is simple and easy to understand and is convenient to install and debug.

2) The feeding system is a double-rack transmission controlled by an external encoder, a servo motor drives a supporting plate to move to realize the cutting function of a cutter, the servo motor is transmitted to a feeding transmission worm after being decelerated by a gear, the feeding transmission worms on two sides are of a differential structure, the differential is used for solving the problem of asynchronism of two racks, two sets of feeding transmission worm turbines with the same design cannot have the same precision, the same precision cannot be realized by adding gear racks, the error is increased when the gear racks and the gear racks are added together, the creeping phenomenon can occur when a lathe dragging plate is used for a long time, a differential is arranged between the two feeding transmission worms, and the differential is asynchronous between the two feeding transmission worm turbines to compensate for a micro gap.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

fig. 1 is a perspective view of the overall structure of the present invention.

Fig. 2 is a front view of the overall structure of the present invention.

Fig. 3 is a schematic structural view of an eccentric structural portion.

In the figure, 1, a servo motor, 2, a gear shaft gear, 3, a speed reducing wheel, 4, an end cover, 5, a feed transmission turbine, 6, a feed transmission worm, 7, a differential structure, 8, a gear, 9, a rack, 10 and an eccentric sleeve.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Embodiment 1, an eccentric mechanism of adjusting simultaneously worm gear and rack and pinion clearance, includes gear 8, rack 9, feeds transmission worm wheel 5, feeds transmission worm 6 and eccentric sleeve 10, feed transmission worm wheel 5 with gear 8 is connected through eccentric sleeve 10, carry out the tooth meshing between gear 8 and the rack 9, carry out the tooth meshing between feed transmission worm wheel 5 and the feed transmission worm 6, the operation of feed transmission worm wheel 5 and feed transmission worm 6 is controlled through servo motor 1 through feed mechanism.

In this embodiment, the feeding mechanism includes a gear shaft, a speed reduction shaft, a differential structure 7, and two sets of feeding systems; the servo motor 1 is connected with a gear shaft and controls rotation of the gear shaft, a gear shaft gear 2 is arranged on the gear shaft in a matching mode, two ends of the speed reducing shaft are respectively provided with a speed reducing wheel 3 in a matching mode, the gear shaft gear 2 is in gear meshing with one speed reducing wheel 3, the other speed reducing wheel 3 is in gear meshing with a gear on a differential structure 7, two ends of the differential structure are respectively connected with a feeding transmission worm 6, and the feeding transmission worm 6 is in matching meshing with a feeding transmission turbine 5.

In this embodiment, the worm wheel 5 and the worm 6 of the two feeding systems are a left-handed worm and a right-handed worm.

In this embodiment, the servo motor 1 is a stepless speed-regulating servo motor.

In the embodiment, the stepless speed regulation servo motor selects the stepless speed regulation of feeding of 0-5 meters.

In this embodiment, an encoder is installed on the rack 9, and the servo motor 1 is controlled by an external encoder.

In the present embodiment, the differential structure 7 is selected as a differential.

The gear rack clearance and the feeding transmission worm and gear clearance are simultaneously adjusted by the eccentric sleeve arranged on the supporting plate, and the structure is simple and easy to understand and is convenient to install and debug.

The feeding system is a double-rack transmission controlled by an external encoder, a servo motor drives a supporting plate to move to realize the cutting function of a cutter, the servo motor is transmitted to a feeding transmission worm after being decelerated by a gear, the feeding transmission worms on two sides are of a differential structure, the differential is used for solving the problem of asynchronism of two racks, two sets of feeding transmission worm turbines with the same design cannot have the same precision, the same precision cannot be realized by adding gear racks, the error is increased when the gear racks and the gear racks are added together, the creeping phenomenon can occur when a lathe dragging plate is used for a long time, a differential is arranged between the two feeding transmission worms, and the differential is asynchronous between the two feeding transmission worm turbines to compensate for a micro gap.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Other technical features than those described in the specification are known to those skilled in the art, and are not described herein in detail in order to highlight the innovative features of the present invention.