CN219293572U

CN219293572U - Tool for cam grinding

Info

Publication number: CN219293572U
Application number: CN202320311646.6U
Authority: CN
Inventors: 陈敬; 尚波; 刘洋; 邓毅; 周强; 陈明建
Original assignee: Chongqing Yuejin Machinery Co ltd
Current assignee: Chongqing Yuejin Machinery Co ltd
Priority date: 2023-02-24
Filing date: 2023-02-24
Publication date: 2023-07-04
Anticipated expiration: 2033-02-24

Abstract

The utility model relates to a tool for cam grinding. The tool comprises a mandrel body, an elastic sleeve and a positioning disc, wherein the mandrel body, the elastic sleeve and the positioning disc are used for being connected with a machine tool lifting cam, the elastic sleeve is sleeved on the mandrel body, the elastic sleeve is externally used for being sleeved with the cam, one end of the mandrel body is in threaded connection with the positioning disc, and the elastic sleeve is tightly matched with the cam through rotating the mandrel body, so that grinding processing of the cam meets the set requirement. The cam grinding device can be used for fixing the cam during cam grinding, and can assist in improving coaxiality of base circle and inner hole grinding of the cam.

Description

Tool for cam grinding

Technical Field

The utility model relates to the technical field of part machining, in particular to a tool for cam grinding.

Background

The coaxiality of the base circle and the inner hole of the cam is about 0.01mm, and the existing clamp for fixing the cam is in clearance fit positioning with the cam, so that a clearance exists between the inner hole of the cam and the mandrel of the clamp, and the coaxiality of the base circle and the inner hole of the cam in grinding is difficult to meet the set requirement.

Disclosure of Invention

The utility model aims to provide a tool for cam grinding, which is used for fixing a cam during cam grinding so as to assist in improving the coaxiality of base circle and inner hole grinding of the cam.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a frock for cam grinding, is including being used for dabber body, elastic sleeve and the positioning disk that links to each other with the lathe, the elastic sleeve cover is established on the dabber body, the elastic sleeve is used for the suit cam outward, the one end spiro union of dabber body is in on the positioning disk, through rotatory dabber body, realize the tight fit of elastic sleeve and cam for the abrasive machining of cam satisfies the settlement requirement.

According to the technical means, the elastic sleeve is arranged outside the mandrel body, the positioning disc is arranged at one end of the mandrel body, and the elastic sleeve is expanded and contracted by screwing the mandrel body, so that the elastic sleeve and the cam sleeved outside the elastic sleeve are effectively and tightly matched, and the coaxiality of the inner hole profile and the base circle of the cam can meet the set requirement in the grinding process of the cam.

Preferably, the elastic sleeve and the mandrel body are in taper fit.

The elastic sleeve and the mandrel body are in taper fit, so that the fit between the elastic sleeve and the cam can be further improved in the process of rotating the mandrel body.

Preferably, one side of the positioning disk is provided with a driving pin, and the other side of the positioning disk is in threaded connection with the mandrel body.

Through setting up the drive round pin in one side of positioning disk, stir the drive round pin for the cam can rotate along with the frock, thereby realizes the grinding of the hole profile and the base circle of cam, has made things convenient for the operation.

Preferably, the elastic sleeve is of a circular ring structure, and the diameter of the elastic sleeve gradually decreases from one end close to the positioning disc to one end far away from the positioning disc.

Preferably, the mandrel body is of cylindrical configuration.

Preferably, the two ends of the mandrel body are provided with center holes which are respectively used for being matched with a machine tool spindle center and a tailstock center to fix the tool.

Preferably, the driving pin and the positioning disc are in threaded connection and fixed.

Preferably, an assembly through hole for installing the mandrel body is formed in the center of the positioning disc along the axis, and an assembly blind hole for installing the driving pin is formed in the position, close to the assembly through hole, of the positioning disc along the axis direction.

Through set up the assembly through-hole that is used for installing the dabber body at the center of positioning disk along the axis to the accessible adaptability sets up the external screw thread length of dabber body, realizes the fixed of the cam to different specifications, has effectively improved the commonality of frock.

The utility model has the beneficial effects that:

according to the tool for grinding the cam, the elastic sleeve is arranged outside the mandrel body, the positioning disc is arranged at one end of the mandrel body, and the elastic sleeve expands and contracts through screwing the mandrel body, so that the elastic sleeve is effectively and tightly matched with the cam sleeved outside the elastic sleeve, the coaxiality of the inner hole profile of the cam and the base circle can meet the set requirement in the grinding process of the cam, and the tool has the advantages of being simple in structure, convenient to operate and low in cost, and has popularization and application values in the technical field of part machining.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

the device comprises a 1-core shaft body, a 11-center hole, a 2-elastic sleeve, a 3-positioning disc, a 4-driving pin and a 5-cam.

Detailed Description

Further advantages and effects of the present utility model will become readily apparent to those skilled in the art from the disclosure herein, by referring to the accompanying drawings and the preferred embodiments. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be understood that the preferred embodiments are presented by way of illustration only and not by way of limitation.

It should be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present utility model by way of illustration, and only the components related to the present utility model are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.

Example 1

As shown in fig. 1, a tool for cam grinding comprises a mandrel body 1, an elastic sleeve 2 and a positioning disc 3, wherein the mandrel body 1, the elastic sleeve 2 and the positioning disc 3 are connected with a machine tool, the elastic sleeve 2 is sleeved on the mandrel body 1, the elastic sleeve 2 is externally used for sleeving a cam 5, one end of the mandrel body 1 is in threaded connection with the positioning disc 3, and the elastic sleeve 2 is tightly matched with the cam 5 through rotating the mandrel body 1, so that grinding processing of the cam 5 meets set requirements.

Through setting up the elastic sleeve outside the dabber body to set up the positioning disk in the one end of dabber body, then through screwing up the dabber body, make the dabber body spin in the assembly through-hole of positioning disk, the elastic sleeve takes place to expand and shrink, thereby make elastic sleeve and cover establish the cam outside the elastic sleeve realize effectual close fit, and then guarantee that the cam can satisfy the settlement requirement in the abrasive machining in-process, the hole profile of cam and the axiality of base circle.

In order to improve the fit between the elastic sleeve 2 and the cam 5, the elastic sleeve 2 and the mandrel body 1 are in taper fit.

For convenient operation, set up drive round pin 4 in one side of positioning disk 3, opposite side spiro union dabber body 1, stir and drive the round pin for the cam can rotate along with the frock, thereby realize the grinding of the hole profile and the base circle of cam, rotatory dabber body 1 makes dabber body 1 be close to drive round pin 4 direction and remove, makes elastic sleeve 2 radially outwards expand, realizes the tight fit with cam 5, rotatory dabber body 1 makes dabber body 1 to keeping away from drive round pin 4 direction and remove, makes elastic sleeve 2 radially inwards shrink, easy to assemble and take off cam 5.

The elastic sleeve 2 is of a circular ring structure, and the diameter gradually decreases from one end close to the positioning disc 3 to one end far away from the positioning disc 3, so that the elastic sleeve 2 and the mandrel body 1 are in taper fit.

The mandrel body 1 is of a cylindrical structure.

The two ends of the mandrel body 1 are respectively provided with a central hole 11 which is respectively matched with the center of the main shaft of the machine tool and the center of the tailstock, so that the tool can be fixed on the grinding machine tool, and the grinding processing of the cam is facilitated.

The driving pin 4 is in threaded connection with the positioning disk 3.

In order to improve the universality of the tool, the tool can be used for grinding more cams, so that the center of the positioning disc 3 is provided with an assembly through hole for installing the mandrel body 1 along the axis, the external thread length of the mandrel body can be adaptively set, the cams with different specifications can be fixed, and the positioning disc 3 is provided with an assembly blind hole for installing the driving pin 4 along the axis direction at a position close to the assembly through hole.

In the tool for cam grinding in the embodiment, in the actual assembly and use process, one end of the mandrel body 1 with external threads is screwed in a rotating through hole of the positioning disc 3, the driving pin 4 is screwed in an assembly blind hole on one side of the positioning disc 3 away from the mandrel body 1, the elastic sleeve 2 is sleeved on the middle cylindrical part of the mandrel body 1, the cam 5 to be machined is sleeved on the elastic sleeve 2 from right to left, the mandrel body 1 is rotated to drive the pin 4 to approach, the elastic sleeve 2 is enabled to expand outwards, tight fit with the cam 5 to be machined is achieved, two ends of the mandrel body 1 are respectively matched with a main shaft center and a tailstock center of a machine tool, integral fixing of the tool and the cam 5 is achieved, the driving pin 4 is stirred, the cam 5 rotates along with the tool, so that grinding machining of an inner hole profile and a base circle of the cam 5 can be achieved, after the cam 5 is fixed through experiments, the effect that the coaxiality of the base circle and the inner hole of the cam 5 is about 0.005mm can be achieved through grinding the cam 5, the tool is simple in structure, practicability is high, and the tool is suitable for the application in the field of grinding parts.

The above embodiments are merely preferred embodiments for fully explaining the present utility model, and the scope of the present utility model is not limited thereto. Equivalent substitutions and modifications will occur to those skilled in the art based on the present utility model, and are intended to be within the scope of the present utility model.

Claims

1. The utility model provides a frock for cam grinding, its characterized in that, including being used for dabber body (1) that links to each other with the lathe, elastic sleeve (2) and positioning disk (3), elastic sleeve (2) cover is established on dabber body (1), elastic sleeve (2) are used for suit cam (5) outward, the one end spiro union of dabber body (1) is in on positioning disk (3).

2. Tool for cam grinding according to claim 1, characterized in that the elastic sleeve (2) is in taper fit with the spindle body (1).

3. Tool for cam grinding according to claim 1, characterized in that one side of the positioning disc (3) is provided with a driving pin (4), and the other side is screwed with the spindle body (1).

4. Tool for cam grinding according to claim 2, characterized in that the elastic sleeve (2) is of circular configuration and gradually reduces in diameter along the end close to the positioning disc (3) towards the end distant from the positioning disc (3).

5. Tool for cam grinding according to claim 2, characterized in that the spindle body (1) is of cylindrical construction.

6. Tool for cam grinding according to claim 1, characterized in that the two ends of the spindle body (1) are provided with central holes (11) for respectively matching with the spindle center and the tailstock center of the machine tool to fix the tool.

7. A tool for cam grinding according to claim 3, characterized in that the driving pin (4) is screw-fixed with the positioning disc (3).

8. Tool for cam grinding according to claim 7, characterized in that the centre of the positioning disc (3) is provided with an assembly through hole along the axis for mounting the spindle body (1), and the positioning disc (3) is provided with an assembly blind hole along the axis direction for mounting the driving pin (4) at a position close to the assembly through hole.