CN218556339U

CN218556339U - Cam positioning tool

Info

Publication number: CN218556339U
Application number: CN202223065822.7U
Authority: CN
Inventors: 马淑娜; 张扬; 崔晶; 张明; 谭慧莉; 王年喜; 史瑞; 许继晶; 马思福; 赖苏楠
Original assignee: Harbin First Machinery Group Corp ltd
Current assignee: Harbin First Machinery Group Corp ltd
Priority date: 2022-11-18
Filing date: 2022-11-18
Publication date: 2023-03-03
Anticipated expiration: 2032-11-18

Abstract

The utility model relates to a cam location frock belongs to cam processing technology field. The problem of the precision control degree of difficulty is big when the cam outline is processed is solved. Including base, location axle, first location axle and second location axle, the central processing of base has the centre bore, and centre bore department processing has the second constant head tank of symmetry, fixes a position epaxial first location axle and the second location axle of installing, fixes a position the centre bore that the axle passed the base, and the both ends of second location axle are located the second constant head tank, and the center pin of first location axle and second location axle is perpendicular with A face. The utility model firstly positions the inner hole of the spline on the cam, thereby aligning the center of the part, having high positioning precision, being convenient for milling the appearance, and ensuring that the relative deviation between the inner hole center line of the spline and the cam center line is not more than 0.5 degrees; the utility model discloses simple structure, it is with low costs, the operation of being convenient for, greatly reduced the precision control degree of difficulty, guarantee finished product quality.

Description

Cam positioning tool

Technical Field

The utility model relates to a location frock belongs to cam processing technology field.

Background

The cam is a rotary or sliding part in a mechanical transmission, which is simple and compact in structure, and can conveniently design the cam profile to realize the expected motion law of the driven part, and transmits the motion to the roller moving close to the edge of the cam or the needle rod moving freely on the groove surface, or bears the force from the roller and the needle rod. The cam requires a certain position relation between the spline groove center line and the cam center line in the using process, so that higher requirements are provided for the cam machining precision, even if the cam center line and the center line of the spline internal control are arranged in a centering mode. However, the outer contour of the cam is arc-shaped, so that the positioning precision is low, the centering is difficult during processing, and the precision of a finished product is influenced.

Therefore, it is desirable to provide a cam positioning tool to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model discloses research and development solve is that the cam outline adds the big problem of the precision control degree of difficulty in man-hour. A brief summary of the present invention is provided below in order to provide a basic understanding of some aspects of the present invention. It should be understood that this summary is not an exhaustive overview of the invention. It is not intended to identify key or critical elements of the invention or to delineate the scope of the invention.

The technical scheme of the utility model:

the utility model provides a cam location frock, includes base, location axle, first location axle and second location axle, the central processing of base has the centre bore, and centre bore department processing has the second constant head tank of symmetry, fixes a position epaxial first location axle and the second location axle of installing, fixes a position the centre bore that the axle passed the base, and the both ends of second location axle are located the second constant head tank, and the center pin of first location axle and second location axle is perpendicular with the A face, and the A face is perpendicular with the base, and a perpendicular bisector of base is located the A face.

Preferably, the following components: the positioning shaft is a stepped shaft and comprises a first stage, a second stage and a third stage, the first stage, the second stage and the third stage are sequentially and coaxially arranged, connecting holes arranged in an array mode are machined in the first stage, radial through holes are machined in the second stage and the third stage, the first positioning shaft is connected with the radial through holes in the third stage, the second positioning shaft is connected with the radial through holes in the second stage, and the second bolt penetrates through the connecting holes to be connected with the base.

Preferably: the center of the cam is provided with a spline inner hole, the spline inner hole is provided with a first tooth groove and a second tooth groove which are symmetrically arranged, the cam is connected with three stages through the spline inner hole, and two ends of the first positioning shaft are respectively arranged in the first tooth groove and the second tooth groove.

Preferably: the cam is provided with through holes in a circumferential array, the center of the base is provided with a circular boss, the circular boss of the base is provided with a threaded hole corresponding to the through holes, and the first bolt penetrates through the through holes and is connected with the threaded hole.

Preferably: the number of the through holes is six.

Preferably: the base is square, and the both sides of base are processed there is the wide groove.

Preferably, the following components: the symmetry degree of the first positioning shaft and the second positioning shaft relative to the B plane is not more than 0.03.

The utility model discloses following beneficial effect has:

the utility model discloses earlier fix a position spline inner bore to the cam, aligned part center, positioning accuracy is high, is convenient for mill appearance processing, guarantees spline inner bore central line and cam central line relative offset.

The utility model discloses simple structure, it is with low costs, the operation of being convenient for, greatly reduced the accuracy control degree of difficulty, guarantee finished product quality.

Drawings

FIG. 1 is a schematic structural view of a cam positioning tool;

FIG. 2 isbase:Sub>A sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic view of the structure of the base;

FIG. 4 is a schematic view of the positioning shaft;

fig. 5 is a structural schematic view of the cam.

In the figure: 1-base, 2-positioning shaft, 3-first positioning shaft, 4-second positioning shaft, 5-first bolt, 6-second bolt, 7-cam, 11-second positioning groove, 12-wide groove, 13-threaded hole, 21-first stage, 22-second stage, 23-third stage, 71-spline inner hole, 711-first tooth groove and 712-second tooth groove.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described below with reference to specific embodiments shown in the accompanying drawings. It should be understood that the description is illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The first specific implementation way is as follows: the embodiment is described with reference to fig. 1 to 5, and the cam positioning tool of the embodiment includes a base 1, a positioning shaft 2, a first positioning shaft 3 and a second positioning shaft 4, wherein a central hole is processed in the center of the base 1, symmetrical second positioning grooves 11 are processed in the central hole, the first positioning shaft 3 and the second positioning shaft 4 are installed on the positioning shaft 2, the positioning shaft 2 passes through the central hole of the base 1, two ends of the second positioning shaft 4 are located in the second positioning grooves 11, central axes of the first positioning shaft 3 and the second positioning shaft 4 are perpendicular to a plane a, the plane a is perpendicular to a plane of the base 1 in fig. 1, and a perpendicular bisector of the base 1 is located on the plane a; the device firstly positions the spline inner hole 71 to the cam 7, so that the center of a part is aligned, the positioning precision is high, the milling shape processing is convenient, and the relative deviation between the center line of the spline inner hole 71 and the center line of the cam 7 is not more than 0.5 degree; the device has the advantages of simple structure, low cost and convenient operation, greatly reduces the precision control difficulty and ensures the quality of finished products.

Still include second bolt 6, location axle 2 is the step shaft, and location axle 2 includes stage 21, two-stage 22 and three-stage 23, stage 21, two-stage 22 and three-stage 23 coaxial setting in order, the processing has the axial connecting hole that the array was arranged on stage 21, all processes radial through hole on two-stage 22, the three-stage 23, first location axle 3 is connected with the radial through hole of three-stage 23, second location axle 4 is connected with the radial through hole of two-stage 22, and second bolt 6 passes the connecting hole and is connected with base 1.

The center of the cam 7 is provided with a spline inner hole 71, the spline inner hole 71 is provided with a first tooth groove 711 and a second tooth groove 712 which are symmetrically arranged, the cam 7 is connected with the three stages 23 through the spline inner hole 71, and two ends of the first positioning shaft 3 are respectively arranged in the first tooth groove 711 and the second tooth groove 712.

A circumferential array of through holes 72 are formed in the cam 7, a circular boss is arranged at the center of the base 1, a threaded hole 13 corresponding to the through holes is formed in the circular boss of the base 1, and the first bolt 5 penetrates through the through holes 72 to be connected with the threaded hole 13;

the number of the through holes 72 is six.

The base 1 is square, and wide grooves 12 are machined on two sides of the base 1; fix this device with the lathe through wide groove 12, to the A face, the B face is fixed a position, utilize the cooperation of second location axle 4 and second constant head tank 11, make location axle 2 perpendicular with the A face, thereby realize the location of first location axle 3, the first tooth's socket 711 of cam 7, second tooth's socket 712 and the cooperation of first location axle 3, realize the location of cam 7, make the central line of spline hole 71 accomplish the cooperation with the B face, through the central line of location spline hole 71, realize the accurate location of cam 7, the milling cutter of rethread lathe is processed the outline of cam 7, make the central line of cam 7 and the central line centering of spline hole 71 set up.

The symmetry degree of the first positioning shaft 3 and the second positioning shaft 4 relative to the plane B is not more than 0.03, the plane B is vertical to the plane of the base 1 in the figure 1, the other perpendicular bisector of the base 1 is located on the plane B, and the intersection point of the two perpendicularly arranged perpendicular bisectors is the center of the center hole.

It should be noted that, in the above embodiments, as long as the technical solutions can be aligned and combined without contradiction, those skilled in the art can exhaust all possibilities according to the mathematical knowledge of the alignment and combination, and therefore the present invention does not describe the technical solutions after alignment and combination one by one, but it should be understood that the technical solutions after alignment and combination have been disclosed by the present invention.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a cam location frock which characterized in that: including base (1), location axle (2), first location axle (3) and second location axle (4), the center processing of base (1) has the centre bore, and centre bore department processing has second constant head tank (11) of symmetry, installs first location axle (3) and second location axle (4) on location axle (2), and the centre bore of base (1) is passed in location axle (2), and the both ends of second location axle (4) are located second constant head tank (11), and the center pin of first location axle (3) and second location axle (4) is perpendicular with the A face, and the A face is perpendicular with base (1), and a perpendicular bisector of base (1) is located the A face.

2. The cam positioning tool according to claim 1, characterized in that: still include second bolt (6), location axle (2) are the step shaft, and location axle (2) include one stage (21), two-stage (22) and three-stage (23), one stage (21), two-stage (22) and three-stage (23) coaxial setting in order, processing has the connecting hole that the array was arranged on one stage (21), all has processed radial through-hole on two-stage (22), the three-stage (23), first location axle (3) are connected with the radial through-hole of three-stage (23), second location axle (4) are connected with the radial through-hole of two-stage (22), and second bolt (6) pass the connecting hole and are connected with base (1).

3. The cam positioning tool according to claim 2, characterized in that: the center of the cam (7) is provided with a spline inner hole (71), the spline inner hole (71) is provided with a first tooth groove (711) and a second tooth groove (712) which are symmetrically arranged, the cam (7) is connected with the three stages (23) through the spline inner hole (71), and two ends of the first positioning shaft (3) are respectively arranged in the first tooth groove (711) and the second tooth groove (712).

4. The cam positioning tool according to claim 3, characterized in that: through holes (72) in a circumferential array are processed on the cam (7), a circular boss is arranged at the center of the base (1), a threaded hole (13) corresponding to the through holes is processed on the circular boss of the base (1), and the first bolt (5) penetrates through the through holes (72) to be connected with the threaded hole (13).

5. The cam positioning tool according to claim 4, characterized in that: the number of the through holes (72) is six.

6. The cam positioning tool according to claim 2, characterized in that: the base (1) is square, and wide grooves (12) are machined on two sides of the base (1).

7. The cam positioning tool according to claim 6, characterized in that: the symmetry degree of the first positioning shaft (3) and the second positioning shaft (4) relative to the B surface is not more than 0.03, the B surface is vertical to the base (1), and the other perpendicular bisector of the base (1) is positioned on the B surface.