CN218504202U

CN218504202U - Eccentric blind hole honing device

Info

Publication number: CN218504202U
Application number: CN202222293211.1U
Authority: CN
Inventors: 周兴伟
Original assignee: CSG TRW Chassis Systems Co Ltd
Current assignee: CSG TRW Chassis Systems Co Ltd
Priority date: 2022-08-30
Filing date: 2022-08-30
Publication date: 2023-02-21
Anticipated expiration: 2032-08-30

Abstract

The utility model relates to an eccentric blind hole honing device belongs to mechanical equipment technical field, including adapter sleeve and casing, the inboard of adapter sleeve is equipped with the ejector pin, the upper wall of adapter sleeve is equipped with the through-hole, the outside cover of ejector pin is equipped with return spring, the casing passes through the downside of threaded connection at the adapter sleeve, the outside of casing is connected with footstep bearing and lock nut, there is the cone through threaded connection after the ejector pin passes the casing, the inboard of casing is located to the cone, the cone joint has the oilstone seat, the downside of casing is equipped with the U type groove of mutually supporting with the oilstone seat, the casing still is connected with the pressure spring piece, pressure spring piece and oilstone seat fixed connection, the oilstone seat is connected with the honing oilstone that is used for honing the hole. The honing device has simple structure and convenient use, can be used for honing the through hole and is also suitable for honing the blind hole with higher precision requirement; the honing machine has the advantages of low manufacturing cost, convenient adjustment and no need of other special reconstruction, and can be used for honing the blind holes and the through holes by utilizing the conventional common honing machine.

Description

Eccentric blind hole honing device

Technical Field

The utility model belongs to the technical field of mechanical equipment, a eccentric blind hole honing device is related to.

Background

Honing is a low-speed grinding method, and is widely applied to the finishing degree and the finish machining of holes with various shapes due to good surface quality characteristics, high machining precision and economic process. The conventional common vertical hydraulic honing machine cannot effectively ensure the honing depth dimension of the blind hole due to poor reciprocating motion axial limiting precision; moreover, because the front end of the honing head needs to be structurally fixed with honing oilstones, a certain distance exists between the front end of the oilstones and the front end of the honing head, and the honing blind holes interfere with the bottom of a workpiece, so that the precision of the conventional vertical hydraulic honing machine and the conventional honing head for honing the blind holes is low, and even the conventional vertical hydraulic honing machine and the conventional honing head cannot be used for honing the blind holes.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing an eccentric blind hole honing device, the honing machine main shaft passes through the adapter sleeve and drives honing head and make rotary motion and reciprocating motion, and realize axial accurate positioning through the laminating of footstep bearing and work piece terminal surface, the hydro-cylinder piston rod in the honing machine tool main shaft promotes the ejector pin, promote the cone again and make axial motion downwards, thereby realize that the cone promotes oilstone seat and oilstone through the slide wedge and makes radial feed motion, after honing head withdraws from the work piece, along with the withdrawal of the hydro-cylinder piston rod in the machine tool main shaft, the ejector pin spring can drive the cone and upwards move axially, the pressure spring can force oilstone seat to the central withdrawal, avoid the fish tail work piece, this honing device does not need other special transformation, can implement the blind hole honing to current ordinary honing machine and ordinary honing head, and the precision of honing blind hole is high.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides an eccentric blind hole honing device, includes adapter sleeve and casing, the inboard of adapter sleeve is equipped with the ejector pin, the top of ejector pin with the last inner wall butt of adapter sleeve, the upper wall of adapter sleeve is equipped with and is used for promoting the through-hole of ejector pin, the outside cover of ejector pin is equipped with return spring, return spring's top with the ejector pin butt, return spring's lower extreme with the up end butt of casing, the casing passes through threaded connection in the downside of adapter sleeve, the outside of casing is connected with footstep bearing, the outside of casing still has the restriction through threaded connection the lock nut of footstep bearing motion, the ejector pin passes there is the cone behind the casing through threaded connection, the cone is located the inboard of casing, the cone joint has the oilstone seat, the oilstone seat with the oblique wedge face butt of cone, the downside of casing be equipped with the U type groove of oilstone seat mutually supporting, the casing still is connected with the indentation piece, the indentation piece with oilstone seat fixed connection, the oilstone seat is connected with the honing hole that is used for honing.

Furthermore, the cone and the oilstone seat are clamped by a double inclined plane of 20 degrees.

Furthermore, three oilstone seats are uniformly arranged on one circle of the cone and are connected with honing oilstones.

Furthermore, the three honing oilstones are eccentrically arranged with the axis of the shell along the reverse direction of the rotation direction of the honing head, and the eccentric distance is 2mm.

Further, the oilstone seat is T-shaped, the T-shaped front end of the oilstone seat is arranged on the inner side of the shell, and the T-shaped rear end of the oilstone seat penetrates through the U-shaped groove of the shell in a sliding mode.

The beneficial effects of the utility model reside in that:

the honing device has simple structure and convenient use, can be used for honing the through hole and is also suitable for honing the blind hole with higher precision requirement; the honing device has low manufacturing cost and convenient adjustment, does not need other special transformation, and can realize the honing of the blind holes and the through holes by utilizing the prior common honing machine. The cone and the oilstone seat adopt a 20-degree double-bevel mode, the honing oilstone is stressed more uniformly in the axial direction, and the cylindricity after honing is improved; three oilstone seats are uniformly arranged, honing is carried out by utilizing the principle of three-point circle, and the roundness and cylindricity of a honed part are ensured; the three honing oilstones are eccentric by 2mm along the reverse direction of the rotation direction of the honing head relative to the central line of the honing head, so that component force consistent with the rotation direction of the honing head is generated in the honing process of the honing oilstones, and the oilstone surface is more attached to the honing surface, thereby reducing the vibration in the honing process and improving the honing precision; the oilstone seat is T-shaped, the front end of the oilstone seat is nested in the shell, and the rear end of the oilstone seat penetrates through the U-shaped groove in a sliding mode, so that the honing oilstone 8 can reach the front end of the shell directly, the bottommost part of a workpiece to be ground is machined, and the honing precision of a blind hole is improved.

Practice proves that for a hydraulic pump cylinder made of HT250, the cylindricity of a blind hole machined by the honing device can stably reach 0.01mm, the size precision reaches H6 level, and the surface roughness can reach Ra0.4.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.

Drawings

For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:

fig. 1 is an exploded view of an eccentric blind hole honing device of the present invention;

fig. 2 is a sectional view of the eccentric blind hole honing device of the present invention;

fig. 3 is a cross-sectional view of the eccentric arrangement of three honing oilstones of the eccentric blind hole honing device of the utility model;

the device comprises a connecting sleeve 1, a mandril 2, a return spring 3, a locking nut 4, a thrust bearing 5, a shell 6, an oilstone base 7, honing oilstones 8, a pressure spring piece 9 and a cone 10.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the features in the following embodiments and examples may be combined with each other without conflict.

Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in any way limiting the scope of the invention; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numbers in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.

Please refer to fig. 1 to 3, which are an eccentric blind hole honing device, including a connecting sleeve 1 and a housing 2, an ejector rod 2 is disposed inside the connecting sleeve 1, a top end of the ejector rod 2 abuts against an upper inner wall of the connecting sleeve 1, a through hole for pushing the ejector rod 2 is disposed on an upper wall of the connecting sleeve 1, a return spring 3 is sleeved outside the ejector rod 2, a top end of the return spring 3 abuts against the ejector rod 2, a lower end of the return spring 3 abuts against an upper end face of the housing 6, the housing 6 is connected to a lower side of the connecting sleeve 1 through a thread, a thrust bearing 5 is connected to an outer side of the housing 6, a lock nut 4 for limiting movement of the thrust bearing 5 is further connected to an outer side of the housing 6 through a thread, the ejector rod 2 penetrates through the housing 6 and is connected to a cone 10, the cone 10 is disposed inside the housing 6, three oilstone seats 7 are uniformly clamped around the cone 10, the cone 7 and three oilstone seats 7 are clamped together through a double inclined plane of 20 °, the U-shaped grooves mutually matched with the oilstone seats 7 are disposed on the lower side of the housing 6, the oilstone seats 7 are respectively connected to a honing head, the three springs 9, and the housings are connected to a spring leaf spring 8 which are rotatably mounted in a manner along a direction of the eccentric honing seat, and are connected to the eccentric honing seat, and connected to the housing 6, and a spring 8 of the housing 6.

The specific implementation mode is as follows:

when the honing device is used, the upper end of the connecting sleeve 1 is connected with a main shaft of the honing machine, the main shaft of the honing machine drives a honing head to make rotary motion and reciprocating motion through the connecting sleeve 1, and the axial accurate positioning is realized through the attachment of the thrust bearing 5 and the end surface of a workpiece, an oil cylinder piston rod in the main shaft of a honing machine tool pushes the ejector rod 2 and then pushes the cone 10 to make axial motion downwards, so that the cone 10 pushes the oilstone seat 7 and the honing oilstone 8 to make radial feeding motion through the wedge surface; when the honing head withdraws from the workpiece, the return spring 3 drives the ejector rod 2 and the cone 10 to axially move upwards along with the return of the piston rod of the oil cylinder in the main shaft of the machine tool, and the pressure spring piece 9 forces the oilstone seat 7 to retract towards the center, so that the workpiece is prevented from being scratched. The honing oilstone 8 is eccentric downwards along the central line of the honing head by 2mm, so that the area of the oilstone below the central line of the honing head is larger than that of the upper part, the honing oilstone 8 generates component force consistent with the rotation direction of the honing head in the honing process, the oilstone is enabled to be more attached to the surface of a workpiece, the vibration of the honing process is reduced, and the honing precision is improved.

Practice proves that for a hydraulic pump cylinder made of HT250 materials, the cylindricity of a blind hole machined by the honing device can stably reach 0.01mm, the size precision reaches H6 level, and the surface roughness can reach Ra0.4.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.

Claims

1. An eccentric blind hole honing device which characterized in that: including adapter sleeve (1) and casing (6), the inboard of adapter sleeve (1) is equipped with ejector pin (2), the top of ejector pin (2) with the last inner wall butt of adapter sleeve (1), the upper wall of adapter sleeve (1) is equipped with and is used for promoting the through-hole of ejector pin (2), the outside cover of ejector pin (2) is equipped with return spring (3), the top of return spring (3) with ejector pin (2) butt, the lower extreme of return spring (3) with the up end butt of casing (6), casing (6) pass through threaded connection in the downside of adapter sleeve (1), the outside of casing (6) is connected with footstep bearing (5), the outside of casing (6) still has the restriction through threaded connection lock nut (4) of footstep bearing (5) motion, ejector pin (2) pass through threaded connection behind casing (6) have cone (10), cone (10) are located the inboard of casing (6), cone (10) joint has whetstone seat (7), whetstone seat (7) with the wedge butt of whetstone (10) there is equipped with the casing (6) the inclined surface of shell body (6) the cooperation of oil stone, the casing (6) the downside still is connected with the oil stone seat (7) the reed type groove (7), the pressure reed (9) is fixedly connected with the oilstone seat (7), and the oilstone seat (7) is connected with a honing oilstone (8) for honing the blind hole.

2. The eccentric blind hole honing device according to claim 1, wherein: the cone (10) and the oilstone seat (7) are clamped by double inclined planes of 20 degrees.

3. The eccentric blind hole honing device according to claim 2, wherein: the circumference of the cone (10) is uniformly provided with three oilstone seats (7), and the three oilstone seats (7) are connected with honing oilstones (8).

4. An eccentric blind hole honing device according to claim 3, wherein: the three honing oilstones (8) are eccentrically arranged along the reverse direction of the rotation direction of the honing head and the axis of the shell (6), and the eccentric distance is 2mm.

5. An eccentric blind hole honing device according to claim 1, wherein: the oilstone seat (7) is T-shaped, the T-shaped front end of the oilstone seat (7) is arranged on the inner side of the shell (6), and the T-shaped rear end of the oilstone seat (7) slides to penetrate through the U-shaped groove of the shell (6).