WO2018103030A1

WO2018103030A1 - Tri-axial ball bearing extrusion jig

Info

Publication number: WO2018103030A1
Application number: PCT/CN2016/108973
Authority: WO
Inventors: 杨小平; 郭再泉; 葛如海; 王霞; 赵勇
Original assignee: 无锡职业技术学院
Priority date: 2016-12-07
Filing date: 2016-12-08
Publication date: 2018-06-14
Also published as: CN106363343A; CN106363343B

Abstract

A tri-axial ball bearing extrusion jig, comprising a support frame, a rolling axle (1), and a tail clamp (6). The support frame comprises an upper frame (3), a right frame (7), a lower frame (8), and a left frame (9) connected in that order to form a hexagonal arrangement. A central portion of the left frame (9) and right frame (7) and a central portion of the upper frame (3) are all provided with a positioning hole (2). The left frame (9) and right frame (7) are respectively connected, via a rotating shaft hole (10), to the left side and right side of the upper frame (3). The tail clamp (6) is connected, via a pin shaft, to the rotating shaft hole (10) of the right frame (7). Three rolling shafts (1) are uniformly distributed around a 360° circumference to press a shaft-type work piece (4) to a central position. The rolling shaft (1) comprises a shaft rod (1-1), a shaft jacket (1-5), and a rolling ball (1-7). The rolling ball (1-7) is positioned below a bearing (1-3) and extends beyond a shaft jacket opening (11) at the bottom of the shaft jacket (1-5). The bearing (1-3) and the rolling ball (1-7) are able to freely rotate.

Description

Triaxial ball crushing fixture

Technical field

The three-axis ball pressing jig of the invention belongs to the field of machinery, and is a jig for external cylindrical extrusion and grinding of long-axis parts.

Background technique

With the development of science and technology, the processing of mechanical parts is now more and more demanding for precision and roughness. The processing of long-axis parts has always been a big problem. First, the ordinary lathe processing is easy to deform, it is difficult to meet the roughness requirements, and it is difficult to place the grinding on the grinding machine as the length of the long-axis parts increases. The conventional solution is to directly polish with fine grinding gauze, the quality controllability is relatively poor, and the roughness is difficult to meet the requirements of use. In daily operation, the risk factor is large, and if it is not noticed, it is prone to work accidents.

The appearance of the extrusion process largely solves the above problems, not only can ensure the accuracy of the processing, the long-axis parts are not easily deformed, and sufficient roughness can be ensured.

Summary of the invention

The object of the present invention is to provide a three-axis ball pressing jig for the above-mentioned deficiencies, wherein the jig of the present invention is fixed by left and right average speed by a lathe tool holder, and three rollers uniformly distributed along a circumference of 360° are used to squeeze the long axis. Parts, moving the fixture and rotating long-axis parts, the two work together to squeeze, and finally to process the parts that meet the accuracy and roughness requirements.

The invention is implemented by the following technical solutions:

The triaxial ball pressing jig includes a bracket, a roller and a tail clamp, and the bracket includes a sequential phase The upper bracket, the right bracket, the lower bracket and the left bracket form a hexagon; the left bracket and the right bracket are respectively located on two sides of the lower bracket, and one end of the left bracket and the right bracket are connected with the lower bracket, and the left bracket and the right bracket are connected. The central part is provided with a positioning hole, and the other end of the left bracket and the right bracket are provided with a rotating shaft hole; the left bracket and the right bracket are respectively connected to the left and right sides of the upper bracket through the shaft hole; the upper bracket is divided into three sections. The middle section is horizontal, and the left and right sections respectively extend obliquely downward from the middle section, and the three sections form a trapezoid; in the middle of the upper section of the upper bracket, there are positioning holes, and the left and right ends of the upper bracket are respectively provided with fixing holes, the fixing holes and the left bracket It overlaps with the shaft hole of the right bracket and is fixed by the pin shaft; the tail clip is connected to the fixing hole of the right bracket through the pin shaft; the three rollers pass through the middle portions of the left bracket, the right bracket and the upper bracket, respectively, and are installed through the positioning holes Fixed; three rollers are evenly distributed along the 360° circumference, squeezing the long shaft parts to the center position.

The roller comprises a shaft rod, a sleeve and a ball; the sleeve is hollow inside, the upper open end is provided with an internal thread, and the bottom portion is provided with a sleeve hole; the shaft rod is inserted into the sleeve, the bottom of the shaft is provided with a card slot; The sleeve is pressed against the shaft, and the shaft is fixed with the internal thread of the sleeve; the bearing is located on the slot in the middle of the shaft and is fixed relative to the shaft by the positioning pin; the ball is located below the bearing, and the sleeve from the bottom of the sleeve The holes are exposed and the bearings and balls are free to rotate.

The fixing holes and the rotating shaft holes on both sides of the upper bracket have a certain eccentricity, that is, not on a horizontal line, and are conveniently installed on the tool holder of the lathe.

The upper part of the shaft is provided with a ruler for measuring the depth of the roller extending into the bracket.

The length of the shaft deep into the sleeve can be adjusted, and the length of the sleeve is fixed by the bolt passing through the positioning hole on the bracket against the shaft.

The outer diameter of the positioning pin is identical to the diameter of the inner bore of the bearing, and the positioning pin is fixed to the bearing through the shaft and the sleeve.

The sleeve hole at the bottom of the sleeve is a tapered opening, and the height of the sleeve exposed by the ball is 1/5 of the diameter of the ball.

Advantages of the Invention: The present invention mainly fixes the left and right average speed by the lathe tool holder, and the three clamps uniformly distributed on the 360° circumference of the clamp squeezing the long shaft type parts, and moving the clamp and the rotating long shaft type parts. The two work together to squeeze and finally machine the parts that meet the accuracy and roughness requirements. The core part is a roller, and the roller that can be adjusted according to the ruler can satisfy the outer circle processing of different parts. At the same time, the 360° distribution can be well supported evenly in actual machining without causing dimensional errors of the parts. The invention fundamentally solves the processing method of the conventional solution grinding with fine grinding gauze, the different parts adopt different speeds to match the pressure, the whole quality is controllable, and there is no hidden trouble of the work accident. The processing process can ensure the accuracy and roughness of the processing, and the work efficiency is high, which is worthy of popularization.

DRAWINGS

The invention will be further described below in conjunction with the accompanying drawings:

1 is a schematic structural view of a three-axis ball pressing jig of the present invention;

Figure 2 is a schematic view showing the structure of the roller of the present invention.

In Figure 1: 1, roller, 2, positioning hole, 3, upper bracket, 4, long shaft parts, 5, fixing holes, 6, tail clip, 7, right bracket, 8, lower bracket, 9, left bracket , 10, shaft hole, 11, shaft sleeve hole;

Figure 2: 1-1, shaft, 1-2, threaded sleeve, 1-3, bearing, 1-4, ruler, 1-5, bushing, 1-6, locating pin, 1-7, ball .

detailed description

Referring to Figures 1-2, the triaxial ball press fixture of the triaxial ball press fixture of the present invention comprises a bracket, a roller 1 and a tail clamp 6, the bracket comprising an upper bracket 4, a right bracket 7, and a lower bracket 8 which are sequentially connected. And the left bracket 9 forms a hexagon; the left bracket 9 and the right bracket 7 are respectively located at two sides of the lower bracket 8, and one ends of the left bracket 9 and the right bracket 7 are connected with the lower bracket 8 at the left bracket 9 and the right bracket 7 The central portion is provided with a positioning hole 2, and the other ends of the left bracket 9 and the right bracket 7 are respectively provided with a rotating shaft hole 10; the left bracket 9 and the right bracket 7 are respectively connected to the left and right sides of the upper bracket 3 through the rotating shaft hole 10; The upper bracket 3 is divided into three sections, the middle section is horizontal, the left and right sections respectively extend obliquely downward from the middle section, and the three sections form a trapezoid; in the middle of the middle section of the upper bracket 3, there are positioning holes 2, and the left and right ends of the upper bracket 3 are respectively opened There is a fixing hole 5 which overlaps with the rotating shaft hole 10 of the left bracket 9 and the right bracket 7 and is fixed by a pin shaft; the tail clip 6 is connected to the fixing hole 5 of the right bracket 7 through the pin shaft; three rollers 1 passing through the middle of the left bracket 9, the right bracket 7 and the upper bracket 3, respectively, and being fixed by the positioning hole 2; three rollers 1 Uniformly distributed along the 360° circumference, the long shaft type part 4 is pressed to the center position.

The roller 1 includes a shaft 1-1, a sleeve 1-5 and a ball 1-7; the sleeve 1-5 is hollow inside, the upper open end is provided with an internal thread, and the bottom is provided with a sleeve hole 11; the shaft 1 -1 is inserted into the inside of the sleeve 1-5, the bottom of the shaft 1-1 is provided with a card slot; the shaft 1-1 is pressed by the threaded sleeve 1-2, and the shaft 1-1 is matched with the internal thread of the sleeve 1-5 Fixed; bearing 1-3 is located in the middle of shaft 1-1 The card slot is fixed relative to the shaft 1-1 by the positioning pin 1-6; the ball 1-7 is located below the bearing 1-3, and is exposed from the sleeve hole 11 at the bottom of the sleeve 1-5, the bearing 1 3 and the balls 1-7 are free to rotate.

The fixing holes 5 and the shaft holes 10 on both sides of the upper bracket 3 have a certain eccentricity, that is, not on a horizontal line.

The upper portion of the shaft 1-1 is provided with a ruler 1-4 for measuring the depth of the roller 1 extending into the bracket.

The length of the shaft 1-1 deep into the sleeve 1-5 can be adjusted, and the shaft 1-1 is supported by the bolt through the positioning hole 2 on the bracket, so that the fixed shaft 1-1 extends into the length of the sleeve 1-5. .

The outer diameter of the positioning pin 1-6 is the same as the inner diameter of the bearing 1-3, and the positioning pin 1-6 is fixed to the bearing 1-3 through the shaft 1-1 and the sleeve 1-5.

The sleeve hole 11 at the bottom of the sleeve 1-5 is a tapered opening, and the height of the ball 1-7 exposing the sleeve hole is 1/5 of the diameter of the ball.

In normal use: according to the size of the long-axis type component 4, the depth of the roller 1 extending into the bracket is measured by the ruler 1-4 on the roller 1 to ensure that the three rollers 1 extend into the same length and pass through the positioning hole 2 Fixing the upper bracket 3 and the right bracket 7 through the fixing hole 5; such that one end of the long shaft type component 4 is located at the center of the three rollers 1 and is clamped by the lathe cutter disc, and the lathe cutter holder clamps the tail clip 6 The clamp can be moved at a uniform speed; the long shaft type part 4 is rotated by one end of the lathe cutter, and the two work together to extrude, and finally the parts that meet the requirements of precision and roughness are processed, and the bearings 1-3 In contact with the balls 1-7 on the roller 1, the bearings 1-3 and the balls 1-7 can be freely rotated, so that any rotation speed of the long-axis type parts 4 can be satisfied without affecting the machining effect.

The invention mainly fixes the left and right average speed by the lathe tool holder, and the three clamps uniformly distributed around the 360° circumference of the clamp squeezing the long shaft type parts, moving the clamp and rotating the long shaft type parts, and the two interacting together Extrusion, the final processing of parts that meet the accuracy and roughness requirements. The core part is a roller, and the roller that can be adjusted according to the ruler can satisfy the outer circle processing of different parts. At the same time, the roller uniformly distributed along the circumference of 360° can well support evenly in the actual processing, and does not cause dimensional error of the part.

The above embodiment shows a three-axis ball extrusion jig, focusing on the solution of the high-precision and roughness of the part by squeezing the long-axis parts through three uniform rollers. The present invention is directed to a device for producing a similar to achieve the objects and features of the present invention by the present invention. The three-axis ball press jig of the present invention avoids the conventional method of grinding parts and improves the controllability of the part quality. And the security, the integrated solution to meet the modern production efficiency, the above implementation is only a specific embodiment of the present invention, and should not be construed as limiting the description of the embodiments. Since a person skilled in the art can make a number of simple modifications and variations on the basis of the present invention, the present invention is not limited to the details of the structure, the operation and the description, and the equivalent modifications and equivalents are within the scope of the appended claims.

Claims

A three-axis ball pressing fixture, comprising: a bracket, a roller and a tail clamp, the bracket comprising an upper bracket, a right bracket, a lower bracket and a left bracket connected in sequence to form a hexagon; a left bracket and a right The brackets are respectively located on two sides of the lower bracket, one end of the left bracket and the right bracket are connected with the lower bracket, and a positioning hole is arranged in the middle of the left bracket and the right bracket, and the other end of the left bracket and the right bracket are provided with a rotating shaft hole; The bracket and the right bracket are respectively connected to the left and right sides of the upper bracket through the shaft hole; the upper bracket is divided into three sections, the middle section is horizontal, the left and right sections respectively extend obliquely downward from the middle section, and the three sections form a trapezoid; The middle portion of the middle portion is provided with a positioning hole, and the left and right ends of the upper bracket are respectively provided with fixing holes, and the fixing holes overlap with the shaft holes of the left bracket and the right bracket, and are fixed by the pin shaft; the tail clip passes through the pin shaft and the right bracket The fixing holes are connected; the three rollers pass through the middle of the left bracket, the right bracket and the upper bracket, respectively, and are fixed by the positioning holes; the three rollers are evenly distributed along the 360° circumference, and the long shaft parts are pressed to the center position. .
The three-axis ball pressing jig according to claim 1, wherein the roller comprises a shaft rod, a sleeve and a ball; the sleeve is hollow inside, the upper open end is provided with an internal thread, and the bottom portion is provided with a sleeve hole. The shaft rod is inserted into the sleeve, and the bottom of the shaft rod is provided with a card slot; the shaft rod is pressed by the thread sleeve, and the shaft rod is fixed with the internal thread of the sleeve; the bearing is located on the card slot in the middle of the shaft rod, and passes through the positioning pin and The shaft is relatively fixed; the ball is located below the bearing and is exposed from the sleeve hole at the bottom of the sleeve, and the bearing and the ball can rotate freely.
The three-axis ball pressing jig according to claim 1, wherein the fixing holes and the rotating shaft holes on both sides of the upper bracket have a certain eccentricity, that is, not on a horizontal line.
The three-axis ball press jig according to claim 1, wherein the upper portion of the shaft is provided with a ruler.
The three-axis ball pressing jig according to claim 1, wherein the length of the shaft is adjustable deep into the sleeve, and the shaft is inserted through the positioning hole on the bracket to support the shaft, thereby fixing the shaft into the sleeve. length.
The three-axis ball pressing jig according to claim 1, wherein the outer diameter of the positioning pin is identical to the diameter of the inner bore of the bearing, and the positioning pin is fixed to the bearing through the shaft and the sleeve.
The three-axis ball pressing jig according to claim 1, wherein the sleeve hole at the bottom of the sleeve is a tapered opening, and the height of the sleeve exposed by the ball is 1/5 of the diameter of the ball.