CN112548705A

CN112548705A - Grinding tool for thin-wall circular ring part

Info

Publication number: CN112548705A
Application number: CN202011394149.4A
Authority: CN
Inventors: 钟志伟; 杨华; 毛江; 付黎明
Original assignee: Jiujiang Precision Measuring Technology Research Institute
Current assignee: Jiujiang Precision Measuring Technology Research Institute
Priority date: 2020-12-03
Filing date: 2020-12-03
Publication date: 2021-03-26

Abstract

A grinding tool for a thin-wall circular ring part comprises an outer circle machining assembly and an inner circle machining assembly, wherein the outer circle machining assembly comprises a grinding wheel for grinding the outer circle of the thin-wall circular ring part and a taper core rod for fixing the thin-wall circular ring part, and the end faces of two ends of the taper core rod are provided with center holes for being fixedly connected with the tip of an external grinding machine; the inner circle machining assembly comprises an inner circle grinding wheel and a hollow base, the inner circle grinding wheel is used for grinding the inner circle of the thin-wall circular ring part, the hollow base is fixed on a sucker of the inner circle grinding machine, a fixing groove used for installing the thin-wall circular ring part is formed in the upper end of the inner side of the hollow base, and a locking nut is arranged at the upper end of the thin-wall circular ring part and fixedly connected with the hollow base through a thread pair. The invention effectively solves the problem of clamping deformation of the thin-wall circular ring part when the inner circle and the outer circle of the thin-wall circular ring part are ground.

Description

Grinding tool for thin-wall circular ring part

Technical Field

The invention relates to a grinding tool for a thin-wall circular ring part.

Background

In the mechanical industry, a plurality of structures of a dense-bead shafting are provided, wherein a key part is a dense-bead bearing seat. Due to structural limitation, a plurality of dense-ball bearing seats are thin-walled, the hardness is high, the cylindricity requirement of parts is high, and clamping deformation is easy to occur in the grinding process of inner and outer circles.

The axial and radial limiting of the part is realized by utilizing the taper core rod, and the deformation problem in the process of cylindrical grinding can be effectively reduced without the constraint of clamping force. And the locking nut is connected with the base through the threads, so that the nut is stressed uniformly when pressing the part. And because the contact area is increased, the local stress concentration in part clamping is reduced, and the deformation problem in the inner circle grinding process can be effectively reduced.

Disclosure of Invention

The invention aims to provide a grinding tool for a thin-wall circular ring part, so as to solve the problems in the background technology.

The technical scheme adopted for achieving the purpose is that the grinding tool for the thin-wall circular ring part comprises an outer circle machining assembly and an inner circle machining assembly, wherein the outer circle machining assembly comprises a grinding wheel for grinding the outer circle of the thin-wall circular ring part and a taper core rod for fixing the thin-wall circular ring part, and the end faces of two ends of the taper core rod are respectively provided with a central hole for being fixedly connected with the tip of an external grinding machine; the inner circle machining assembly comprises an inner circle grinding wheel and a hollow base, the inner circle grinding wheel is used for grinding the inner circle of the thin-wall circular ring part, the hollow base is fixed on a sucker of the inner circle grinding machine, a fixing groove used for installing the thin-wall circular ring part is formed in the upper end of the inner side of the hollow base, and a locking nut is arranged at the upper end of the thin-wall circular ring part and fixedly connected with the hollow base through a thread pair.

The depth of the fixing groove is smaller than the thickness of the thin-wall circular ring part, and the thin-wall circular ring part is pressed and fixed in the fixing groove through the locking nut.

Advantageous effects

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

1. The invention effectively solves the problem of clamping deformation when the inner circle and the outer circle of the thin-wall circular ring part are ground;

2. the grinding machine has a simple structure, is economical and feasible, and is suitable for grinding the inner circle and the outer circle of thin-wall circular ring parts with various thicknesses.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

FIG. 1 is a schematic structural view of an internal grinding tool of the present invention;

FIG. 2 is a schematic structural view of the cylindrical grinding tool of the present invention;

FIG. 3 is a schematic diagram of the cylindrical grinding process of the present invention;

FIG. 4 is a schematic view of the internal grinding process of the present invention.

Detailed Description

The invention is further described with reference to the following examples and the accompanying drawings.

A grinding tool for a thin-wall circular ring part comprises an outer circle machining component 2 and an inner circle machining component 3, as shown in figures 1-4, the outer circle machining component 2 comprises a grinding wheel 4 for grinding the outer circle of the thin-wall circular ring part 1 and a taper core rod 21 for fixing the thin-wall circular ring part 1, and the end faces of two ends of the taper core rod 21 are respectively provided with a central hole 22 for being fixedly connected with a tip 23 of an external grinding machine; the internal machining component 3 comprises an internal grinding wheel 5 for grinding the inner circle of the thin-wall circular ring part 1 and a hollow base 31 fixed on the internal grinding machine sucker 6, a fixing groove 32 for installing the thin-wall circular ring part 1 is formed in the upper end of the inner side of the hollow base 31, a locking nut 33 is arranged at the upper end of the thin-wall circular ring part 1, and the locking nut 33 is fixedly connected with the hollow base 31 through a thread pair 34.

The depth of the fixing groove 32 is smaller than the thickness of the thin-wall ring part 1, and the thin-wall ring part 1 is pressed and fixed in the fixing groove 32 through a locking nut 33.

In the invention, the taper core rod 21 selects proper taper, the thin-wall circular ring part 1 is placed on the taper core rod 21, the outer circular surface of the thin-wall circular ring part 1 is ground, the upper end surface is ground, and then the lower end surface of the thin-wall circular ring part 1 is ground by flat grinding; then the thin-wall ring part 1 is placed in a fixing groove 32 in the hollow base 31, the locking nut 33 is screwed on the hollow base 3, and the upper end face of the thin-wall ring part 1 is tightly pressed through the inner end face of the locking nut 4; and then the inner circle surface of the thin-wall circular ring part 1 is processed by an inner circle grinding wheel 5.

In the specific implementation of the invention, firstly, the taper core rod 21 selects a proper taper, the thin-wall ring part 1 is placed on the taper core rod 21, on an excircle grinder, as shown in fig. 3, an excircle grinder tip 23 is used for fixing through central holes 22 at two ends of the taper core rod 21, an excircle surface of the thin-wall ring part 1 is ground by a grinding wheel 4, and the end surface of the upper end is ground.

And then positioning by using the ground upper end face, and grinding the lower end face of the thin-wall circular ring part 1 by flat grinding to ensure the perpendicularity of the excircle and the end face of the part and the parallelism of the two end faces.

Finally, on an inner circle grinding machine, the hollow base 31 is adsorbed on the suction disc 6 of the inner circle grinding machine, the hollow inner hole of the base 31 is calibrated by striking a meter, the axis of the base is ensured to coincide with the rotation center of the suction disc, and then the thin-wall circular ring part 1 is placed in the hollow base 3; and then the locking nut 33 is screwed on the hollow base 31, the inner end surface of the locking nut 33 is tightly pressed on the upper end surface of the thin-wall circular ring part 1, and the inner circle of the thin-wall circular ring part 1 is ground by the inner circle grinding wheel 5.

Claims

1. A grinding tool for a thin-wall circular ring part comprises an outer circle machining component (2) and an inner circle machining component (3), and is characterized in that the outer circle machining component (2) comprises a grinding wheel (4) used for grinding the outer circle of the thin-wall circular ring part (1) and a taper core rod (21) used for fixing the thin-wall circular ring part (1), and the end faces of two ends of the taper core rod (21) are provided with center holes (22) fixedly connected with a top (23) of an outer circle grinding machine; the inner circle machining assembly (3) comprises an inner circle grinding wheel (5) used for grinding the inner circle of the thin-wall ring part (1) and a hollow base (31) fixed on a suction disc (6) of the inner circle grinding machine, wherein the upper end of the inner side of the hollow base (31) is provided with a fixing groove (32) used for installing the thin-wall ring part (1), the upper end of the thin-wall ring part (1) is provided with a locking nut (33), and the locking nut (33) is fixedly connected with the hollow base (31) through a thread pair (34).

2. The grinding tool for the thin-wall ring part according to claim 1, characterized in that the depth of the fixing groove (32) is smaller than the thickness of the thin-wall ring part (1), and the thin-wall ring part (1) is pressed and fixed in the fixing groove (32) through a locking nut (33).