CN214109571U

CN214109571U - Connecting device for cam positioning

Info

Publication number: CN214109571U
Application number: CN202022370316.3U
Authority: CN
Inventors: 孙元坤; 曹磊; 李晓; 李姚; 吴炜
Original assignee: Shanghai Tobacco Machinery Co Ltd
Current assignee: Shanghai Tobacco Machinery Co Ltd
Priority date: 2020-10-22
Filing date: 2020-10-22
Publication date: 2021-09-03
Anticipated expiration: 2030-10-22

Abstract

The utility model relates to a connecting device for cam location for connect cam and zero point positioning disk, connecting device includes connection pad, middle pivot and locating pin, be equipped with central perforation, location pinhole, a plurality of first screw thread through-holes and a plurality of second screw thread through-holes on the connection pad front, the cam centre bore aligns with central perforation and cam locating hole aligns when the cam is laid on the connection pad front, the middle pivot is worn to establish in central perforation and cam centre bore, and with central perforation and cam centre bore all be clearance fit, the locating pin is worn to establish in cam locating hole and location pinhole, and with cam locating hole and location pinhole all be clearance fit; the first threaded through holes are arranged in an annular array around the central through hole, are aligned with the positioning through holes in the zero positioning disc and are connected by bolts; the second threaded hole is used for installing a clamp for fixing the cam on the connecting disc.

Description

Connecting device for cam positioning

Technical Field

The utility model relates to a cam processing location field, concretely relates to a connecting device for cam location.

Background

Under the hot tide of intelligent manufacturing, the zero point positioning device occupies an important position, even more and more people think that the zero point positioning device is the basis of intelligent manufacturing, and in the machining process, the zero point positioning system has many advantages in the aspects of standardization of clamping, centralized process and complex machining, so that the repeated clamping frequency of part machining and the machine tool calibration time can be greatly reduced, and the production efficiency is improved.

In the production and processing, cam parts are often encountered, the processing procedure of the cam parts is often complex, the processing is difficult to complete in one-step procedure, the processing requirement is met by frequently clamping and calibrating, the zero positioning device can just overcome the defect, the production and processing efficiency of the cam can be greatly improved, but the zero positioning disc has certain requirements on the size of a blank, and like the irregular parts of the cam, the zero positioning disc is inconvenient to position and clamp, and the zero positioning disc is difficult to directly mount on the zero positioning disc for processing.

SUMMERY OF THE UTILITY MODEL

In view of the above prior art's shortcoming, the to-be-solved technical problem of the utility model is to provide a connecting device for cam location, can connect cam and zero point positioning disk, and simple structure, connect reliably, the processing location and the installation of the cam of being convenient for.

In order to achieve the above purpose, the utility model provides a connecting device for cam positioning, which is used for connecting a cam and a zero point positioning disc, the end face of the cam is provided with a cam central hole and a cam positioning hole, the zero positioning disc is provided with positioning through holes which are arranged in an annular array, the connecting device comprises a connecting disc, a middle shaft pin and a positioning pin, wherein the front surface of the connecting disc is provided with a central through hole, a positioning pin hole, a plurality of first threaded through holes and a plurality of second threaded through holes, when the cam is arranged on the front surface of the connecting disc, the central hole of the cam is aligned with the central through hole, and the positioning hole of the cam is aligned with the positioning pin hole, the middle shaft pin penetrates through the central through hole and the cam central hole and is in clearance fit with the central through hole and the cam central hole, the positioning pin penetrates through the cam positioning hole and the positioning pin hole and is in clearance fit with the cam positioning hole and the positioning pin hole; the first threaded through holes are arranged in an annular array around the central through hole, are aligned with the positioning through holes in the zero positioning disc and are connected by bolts; the second threaded through hole is used for installing a clamp for fixing the cam on the connecting disc.

Furthermore, the connecting disc is provided with a plurality of positioning pin holes which are all positioned on a straight line passing through the center of the central through hole.

Furthermore, a counter bore is further formed in the front face of the connecting disc, the central through hole is formed in the counter bore, and the radius of the counter bore is larger than that of the central hole of the cam.

Further, the radius of the central through hole of the connecting disc is smaller than or equal to the radius of the central hole of the cam.

Further, the radius of the positioning pin hole is the same as that of the cam positioning hole.

Furthermore, the number of the positioning through holes on the zero point positioning disc is 8, and the number of the first threaded through holes is 4.

Furthermore, the front face of the connecting disc is provided with a first reference square, each edge of the first reference square is uniformly provided with a plurality of second threaded through holes, and the number of the second threaded through holes on each edge is the same.

Furthermore, the front face of the connecting disc is also provided with a second reference square, the second reference square is positioned outside the first reference square, each edge of the second reference square is uniformly provided with a plurality of second threaded through holes, and the number of the second threaded through holes on each edge is the same.

Further, 16 and 24 second threaded through holes are respectively arranged on the first reference square and the second reference square.

Further, the first threaded through hole radius is greater than the first threaded through hole radius.

As described above, the present invention relates to a connecting device, which has the following beneficial effects:

through setting up the connection pad, the intermediate shaft axle, and the locating pin, and set up the center perforation on the connection pad, the locating pin hole, first screw thread through-hole and a plurality of second screw thread through-hole, during the use, the cam is installed in the connection pad front, utilize cam centre bore and center perforation alignment cooperation, and cam locating hole and locating pin hole alignment cooperation, rethread center pin axle and locating pin, confirm the processing zero point and the phase place of cam, second screw thread through-hole is used for anchor clamps such as mounting clamp plate will fix the cam on the connection pad, realize pressing from both sides tightly, fix a position through first screw thread through-hole and locating through-hole alignment cooperation between connection pad and the positioning plate of zero point, and utilize bolted connection, with this with cam and positioning plate of zero point couple together, and realize the relative positioning between cam and the positioning plate of zero point through the connection pad as the intermediate structure. The utility model discloses a connecting device, simple structure connects reliably, the location and the installation on the positioning disk at zero point of the cam of being convenient for carry out multiple operation processing on the positioning disk at zero point of the cam, reduce the repeated clamping number of times that traditional cam multiple operation adds man-hour, improve the clamping and the calibration efficiency of cam processing.

Drawings

Fig. 1 is a schematic structural diagram of the front side of the connection pad of the present invention.

Fig. 2 is a schematic structural diagram of the back of the connection pad in the present invention.

Fig. 3 is a schematic structural diagram of a side surface of a connection pad according to the present invention, which is a partial cross-sectional view.

Fig. 4 is a schematic structural view of the positioning shaft pin of the present invention.

Fig. 5 is a schematic structural view of the middle shaft pin of the present invention.

Fig. 6 is a structural schematic diagram of the cam.

Fig. 7 is a schematic structural view of the zero point positioning plate.

Description of the element reference numerals

1 connecting disc

11 center hole

12 positioning pin hole

13 second threaded through hole

14 first threaded through hole

15 counter bore

16 first reference square

17 second reference square

2 locating pin

3 center axle pin

4 cam

41 cam center hole

42 cam locating hole

Zero-5 positioning disk

51 positioning through hole

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

It should be understood that the drawings of the present application are only used to match the contents disclosed in the specification, so as to be known and read by those skilled in the art, and not to limit the practical limitations of the present invention, so that the present application does not have any technical significance, and any modification of the structure, change of the ratio relationship, or adjustment of the size should still fall within the scope of the present application without affecting the function and the achievable purpose of the present application. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle", and the like used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be considered as the scope of the present invention without substantial changes in the technical content.

The utility model provides a connecting device for cam location for connect cam 4 and zero point positioning disk 5, see fig. 6 and 7, cam centre bore 41 and cam locating hole 42 have on the 4 terminal surfaces of cam, have the positioning hole 51 that the shape array was arranged on the positioning disk 5 of zero point. Referring to fig. 1 to 5, the connecting device of the present invention includes a connecting pad 1, a middle shaft pin 3, and a positioning pin 2, wherein the front surface of the connecting pad 1 is provided with a center through hole 11, a positioning pin hole 12, a plurality of first thread through holes 14, and a plurality of second thread through holes 13, a cam 4 is placed on the front surface of the connecting pad 1, a cam center hole 41 is aligned with the center through hole 11, and a cam positioning hole 42 is aligned with the positioning pin hole 12, the middle shaft pin 3 is inserted into the center through hole 11 and the cam center hole 41, and is in clearance fit with the center through hole 11 and the cam center hole 41, and the positioning pin 2 is inserted into the cam positioning hole 42 and the positioning pin hole 12, and is in clearance fit with the cam positioning hole 42 and the positioning pin hole 12; the first threaded through holes 14 are arranged in an annular array around the central through hole 11, and the first threaded through holes 14 are aligned with the positioning through holes 51 on the zero point positioning disc 5 and connected by bolts; the second threaded through hole 14 is used for mounting a jig for fixing the cam 4 to the connecting plate 1.

The utility model discloses a connecting device's basic operating principle does: the cam 4 is arranged on the front surface of the connecting disc 1, the processing zero point and the phase of the cam 4 are determined by aligning and matching the cam central hole 41 with the central through hole 11 and aligning and matching the cam positioning hole 42 with the positioning pin hole 12, and the second threaded through hole 14 is used for installing a clamp such as a pressing plate and the like to fix the cam 4 on the connecting disc 1 so as to realize clamping. The connecting disc 1 and the zero point positioning disc 5 are positioned by matching the first threaded through hole 14 and the positioning through hole 51, and are connected by using a bolt. Thus, the cam 4 and the zero point positioning plate 5 are connected by the connection plate 1, the center shaft pin 3, and the positioning pin 2, and the relative positioning between the cam 4 and the zero point positioning plate 5 is realized by the connection plate 1 as an intermediate structure. And through the relative rotation between the zero point positioning disk 5 and the connecting disk 1, different first threaded through holes 14 are switched to be aligned with the positioning through holes 51, so that the relative position between the cam 4 and the zero point positioning disk 5 can be switched, and the clamping frequency of the cam 4 is reduced. The utility model discloses a connecting device, simple structure connects reliably, and the location and the installation on zero point positioning disk 5 of cam 4 of being convenient for carry out the multiple operation processing on cam 4 can zero point positioning disk 5, reduce the repeated clamping number of times that traditional cam 4 multiple operation adds man-hour, improve the clamping and the calibration efficiency of cam 4 processing.

Referring to fig. 1 to 7, the connecting device of the present invention will be further described with an embodiment.

In the embodiment, referring to fig. 1, two or more positioning pin holes 12 are formed in the connecting disc 1 and are located on a radial straight line passing through the center of the central through hole 11, so that the connecting disc 1 can be connected with cams 4 of various specifications. The radius of the positioning pin hole 12 is the same as that of the cam positioning hole 42, so that the positioning pin 2 inserted into the positioning pin hole 12 and the cam positioning hole 42 can have the same diameter, and the processing and the positioning are convenient.

In this embodiment, referring to fig. 1, 2 and 3, the radius of the central through hole 11 on the connecting disc 1 is smaller than the radius of the cam central hole 41, and correspondingly, the middle shaft pin 3 is a stepped shaft pin, and passes through from the cam central hole 41 to the central through hole 11 during positioning, and is conveniently taken out when the cam central hole 41 is machined, but the radius of the central through hole 11 may also be equal to the radius of the cam central hole 41. The front surface of the connecting disc 1 is further provided with a counter bore 15, the central through hole 11 is arranged in the counter bore 15, the radius of the counter bore 15 is larger than that of the cam central hole 41, the depth of the counter bore 15 is preferably larger than 1/5 of the thickness of the connecting disc 1, when the cam central hole 41 is ground, the middle shaft pin 3 is taken out, the grinding wheel extends into the cam central hole 41, and the counter bore 15 can prevent the grinding wheel from interfering with the connecting disc 1 and plays a role in avoiding.

In this embodiment, referring to fig. 1, the number of the positioning through holes 51 on the zero point positioning plate 5 is 8, and the number of the first threaded through holes 14 on the connecting plate 1 is 4, so that the connecting plate 1 rotates by 45 ° and by multiples of 45 ° with respect to the zero point positioning plate 5, as a matter of convenience, the relative position of the cam 4 and the positioning plate.

In this embodiment, referring to fig. 1, a first reference square 16 is disposed on the front surface of the connecting disc 1, a plurality of second threaded through holes 13 are uniformly distributed on each side of the first reference square 16, and the number of the second threaded through holes 13 on each side is the same, specifically, 4 on each side in this embodiment, so that the connecting disc can be mounted on different orientations according to actual conditions to facilitate clamping of the cam 4. Further, the front surface of the connecting disc 1 is further provided with a second reference square 17, the second reference square 17 is located outside the first reference square 16, the centers of the second reference square 17 and the first reference square 16 coincide, the sides of the second reference square 17 are parallel to each other, a plurality of second threaded through holes 13 are uniformly distributed on each side of the second reference square 17, the number of the second threaded through holes 13 on each side is the same, specifically, each side is 6 in the embodiment, and therefore the clamp is convenient to mount. The first reference square 16 and the second reference square 17 are respectively positioned at the outer sides of the two positioning pin holes 12, the second threaded through hole 13 on the first reference square 16 is matched with the pin hole at the outer side for use, and the second threaded through hole 13 on the second reference square 17 is matched with the pin hole at the inner side for use. The radii of the second threaded through holes 13 may all be the same, improving versatility,

in the present embodiment, the radius of the first threaded through hole 14 is greater than the radius of the second threaded through hole 13, so that the connection strength between the connection disc 1 and the zero point positioning disc 5 can be greater than the connection strength between the connection disc 1 and the cam 4, and the stability of the installation of the cam 4 is ensured. Meanwhile, since the connection between the connection disc 1 and the zero point positioning disc 5 may use only a part of the first threaded through hole 14, other first threaded through holes 14 not used may also be used for mounting a jig, and may be used for a jig of a different specification from that mounted in the second threaded through hole 13.

By last, the connecting device in this embodiment, its sound construction is reliable, and the location is accurate, and the clamping is convenient, and the location is accurate, conveniently connects positioning disk 5 and cam 4 at zero point, ensures cam 4's location simultaneously for cam 4 can carry out multiple operation processing on positioning disk 5 at zero point, can reduce the time of the repeated clamping and the location between different processes by a wide margin, be convenient for process and installation.

To sum up, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. A connecting device for cam positioning, which is used for connecting a cam (4) and a zero point positioning disc (5), wherein the end face of the cam (4) is provided with a cam central hole (41) and a cam positioning hole (42), the zero point positioning disc (5) is provided with positioning through holes (51) which are arranged in an annular array, and the connecting device is characterized in that: the connecting device comprises a connecting disc (1), a middle shaft pin (3) and a positioning pin (2), wherein a center through hole (11), a positioning pin hole (12), a plurality of first thread through holes (14) and a plurality of second thread through holes (13) are formed in the front surface of the connecting disc (1), a cam center hole (41) is aligned with the center through hole (11) when the cam (4) is placed on the front surface of the connecting disc (1), a cam positioning hole (42) is aligned with the positioning pin hole (12), the middle shaft pin (3) penetrates through the center through hole (11) and the cam center hole (41) and is in clearance fit with the center through hole (11) and the cam center hole (41), and the positioning pin (2) penetrates through the cam positioning hole (42) and the positioning pin hole (12) and is in clearance fit with the cam positioning hole (42) and the positioning pin hole (12); the first threaded through holes (14) are arranged in an annular array around the central through hole (11), and the first threaded through holes (14) are aligned with the positioning through holes (51) on the zero point positioning disc (5) and are connected by bolts; the second threaded through hole (13) is used for installing a clamp for fixing the cam (4) on the connecting disc (1).

2. The connection device of claim 1, wherein: the positioning pin holes (12) on the connecting disc (1) are multiple and are all positioned on a straight line passing through the center of the central through hole (11).

3. The connection device of claim 1, wherein: the front surface of the connecting disc (1) is further provided with a counter bore (15), the central through hole (11) is arranged in the counter bore (15), and the radius of the counter bore (15) is larger than that of the cam central hole (41).

4. The connection device of claim 1, wherein: the radius of a central through hole (11) of the connecting disc (1) is smaller than or equal to that of a cam central hole (41).

5. The connection device of claim 1, wherein: the radius of the positioning pin hole (12) is the same as that of the cam positioning hole (42).

6. The connection device of claim 1, wherein: positioning through holes (51) on the zero point positioning disc (5) are 8, and the number of the first threaded through holes (14) is 4.

7. The connection device of claim 1, wherein: the front face of the connecting disc (1) is provided with a first reference square (16), each edge of the first reference square (16) is uniformly provided with a plurality of second threaded through holes (13), and the number of the second threaded through holes (13) on each edge is the same.

8. The connection device of claim 7, wherein: the front face of the connecting disc (1) is further provided with a second reference square (17), the second reference square (17) is located outside the first reference square (16), each edge of the second reference square (17) is evenly provided with a plurality of second threaded through holes (13), and the number of the second threaded through holes (13) on each edge is the same.

9. The connection device of claim 8, wherein: 16 and 24 second threaded through holes (13) are respectively arranged on the first reference square (16) and the second reference square (17).

10. The connection device of claim 1, wherein: the radius of the first threaded through hole (14) is larger than that of the first threaded through hole (14).