CN212360532U

CN212360532U - Coupler forging

Info

Publication number: CN212360532U
Application number: CN202020999152.8U
Authority: CN
Inventors: 袁书泉; 刘生良; 魏万明; 李佳; 张建祥
Original assignee: Zhejiang 3d Datong Cold Extrusion Co ltd
Current assignee: Zhejiang Sanwei Datong Precision Forging Co.,Ltd.
Priority date: 2020-06-03
Filing date: 2020-06-03
Publication date: 2021-01-15
Anticipated expiration: 2030-06-03

Abstract

The utility model belongs to the technical field of the transmission connecting piece, especially, relate to a coupling forging. It has solved the high scheduling problem of prior art cost. The coupler forging comprises a disc, wherein a plurality of protrusions which are uniformly distributed in the circumferential direction are arranged on the outer edge of one end face of the disc, the transverse section of each protrusion is trapezoidal, the outer wall of each protrusion is provided with a circular arc convex surface, the circle center of each circular arc convex surface is coincident with the axial lead of the disc, the inner side of each protrusion is provided with an inner circular arc concave surface, the circle center of the inner circular arc concave surface on the same protrusion is coincident with that of the circular arc convex surface, the circle centers of the inner circular arc concave surfaces are coincident, the outer wall of the disc is provided with an arc weight reducing notch between two adjacent protrusions, the size of the arc weight reducing notch in the thickness direction of the disc is 1/4-1/5 of the total thickness of the disc, and the centers of the end faces of the two. The application has the advantages that: the cost is reduced.

Description

Coupler forging

Technical Field

The utility model belongs to the technical field of the transmission connecting piece, especially, relate to a coupling forging.

Background

The coupling is a common fitting used at power outputs.

The shaft coupling has flange connection and a plurality of shaft coupling structures with concave-convex matching connection structures.

The coupler is manufactured by forging generally, the structure of the existing forging piece comprises a disc and a plurality of raised claws connected to one end of the disc, the integral disc is cylindrical, and two ends of the disc are of solid structures, so that the cost is relatively high; meanwhile, as the circle centers of the inner side and the outer side of the protruding claw are not superposed with the axis of the disc, when the disc shaft hole is machined subsequently, the service life of the drill bit is greatly shortened due to the rotation and the shaking of the disc, and the design of the forged piece is unreasonable.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem, a shaft coupling forging that designs more rationally is provided.

In order to achieve the above purpose, the utility model adopts the following technical proposal: the coupler forging comprises a disc, wherein a plurality of protrusions which are uniformly distributed in the circumferential direction are arranged on the outer edge of one end face of the disc, the transverse section of each protrusion is trapezoidal, the outer wall of each protrusion is provided with a circular arc convex surface, the circle center of each circular arc convex surface is coincident with the axial lead of the disc, the inner side of each protrusion is provided with an inner circular arc concave surface, the circle center of the inner circular arc concave surface on the same protrusion is coincident with that of the circular arc convex surface, the circle centers of the inner circular arc concave surfaces are coincident, the outer wall of the disc is provided with an arc weight reducing notch between two adjacent protrusions, the size of the arc weight reducing notch in the thickness direction of the disc is 1/4-1/5 of the total thickness of the disc, and the centers of the end faces of the two.

In the coupler forging piece, two opposite surfaces of each protruding portion are planes, the two opposite surfaces are distributed in a splayed shape, the planes are connected with the arc convex surfaces through the arc chamfers I, and the planes are connected with the inner arc concave surfaces through the arc chamfers II.

In the coupler forging, a third arc chamfer is arranged at one end, far away from the disc, of each boss.

In the coupler forging piece, one end face of the disc, which is provided with the protruding part, is parallel to the other end face of the disc.

In the coupler forging piece, the number of the convex parts is 4, and the number of the arc-shaped weight-reducing notches is equal to that of the convex parts.

Compared with the prior art, the coupler forging has the advantages that:

the input of raw materials is further reduced, the cost is reduced, the subsequent machining time is shortened, the design is more reasonable, and the energy-saving production requirements of current enterprises are better met.

The centers of circles are overlapped, and the like, so that the gravity distribution balance can be ensured, and the service life of the drill bit is ensured.

Drawings

Fig. 1 is a schematic structural diagram provided by the present invention.

Fig. 2 is a schematic structural diagram of the direction a-a in fig. 1.

Fig. 3 is a schematic view of the structure in the direction B-B in fig. 1.

In the figure, a disc 1, a circular recess 10, a convex part 2, a circular arc convex surface 20, an inner circular arc concave surface 21, a circular arc weight-reducing notch 22, a circular arc chamfer I23, a circular arc chamfer II 24 and a circular arc chamfer III 25.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in figure 1, the coupler forging comprises a disc 1, a plurality of protrusions 2 which are uniformly distributed in the circumferential direction are arranged on the outer edge of the end face of one end of the disc 1, the transverse section of each protrusion 2 is trapezoidal, and the disc 1 and the protrusions 2 are integrally formed through forging, so that the overall structural strength is ensured.

As shown in fig. 1 and 3, the outer wall of each convex part 2 is provided with a circular arc convex surface 20, the center of the circular arc convex surface 20 coincides with the axial lead of the disc 1, the inner side of each convex part 2 is provided with an inner circular arc concave surface 21, and the center of the inner circular arc concave surface 21 on the same convex part 2 coincides with the center of the circular arc convex surface 20.

The centers of the inner circular concave surfaces 21 are overlapped, and the structure can facilitate the processing and manufacturing of the whole structure and simultaneously ensure the balance of the circumferential gravity distribution. Secondly, because the centers of the inner circular concave surfaces 21 are overlapped, when the drill bit is used for finish machining the shaft hole, the cutting amount is uniform, and the machining precision of the shaft hole can be ensured.

The arc-shaped lightening gap 22 between two adjacent convex parts 2 is arranged on the outer wall of the disc 1, the size of the arc-shaped lightening gap 22 along the thickness direction of the disc 1 is 1/4-1/5 of the total thickness of the disc 1, the arc-shaped lightening gap 22 can save the input amount of raw materials and reduce the manufacturing cost, and meanwhile, the structure can also meet the requirements of strength and service performance.

The end face of one end of the disc 1 provided with the protruding part 2 is parallel to the other end face of the disc 1, circular recesses 10 formed by forging are respectively arranged in the centers of the end faces of the two ends of the disc 1, and the circular recesses 10 are blind holes. The depth of each circular recess 10 is 1/5 of the total thickness of the disc 1, and the design of the circular recess 10 can further reduce the material input cost, and simultaneously, the subsequent drilling process can be facilitated, because the reserved circular recess 10 can be used as a guide function for the drill bit to extend into the disc before the drilling process.

The axis of the circular recess 10 coincides with the disc axis.

Secondly, the junction of each boss 2 and the disc is provided with a fillet (excluding the outer side of the circular arc convex surface 20), which can improve the structural strength of the junction and facilitate demolding.

Two opposite surfaces of each convex part 2 are planes, the two opposite surfaces are distributed in a splayed shape, the planes are connected with the arc convex surfaces 20 through arc chamfers I23, and the planes are connected with the inner arc concave surfaces 21 through arc chamfers II 24. The design of the arc chamfer can facilitate die opening and subsequent demoulding.

And the plane can be convenient for the mutual muff coupling of two shaft couplings (a groove is formed between two adjacent convex parts 2, the convex part on one shaft coupling is inserted into the groove of the other shaft coupling), so as to prevent interference.

Next, as shown in fig. 2, a circular-arc chamfer three 25 is provided at one end of each boss 2 away from the disc 1. The structure can prevent sharp edges from scratching operators and is convenient for demoulding.

Preferably, the number of the convex parts 2 is 4, and the number of the arc-shaped weight-reducing notches 22 is equal to that of the convex parts 2.

The two form an angle of 45 deg..

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A coupler forging comprises a disc (1), wherein a plurality of convex parts (2) which are uniformly distributed in a circumferential manner are arranged on the outer edge of one end face of the disc (1), and the transverse section of each convex part (2) is trapezoidal, and is characterized in that the outer wall of each convex part (2) is provided with a circular arc convex surface (20), the circle center of each circular arc convex surface (20) is superposed with the axial lead of the disc (1), the inner side of each convex part (2) is provided with an inner circular arc concave surface (21), the circle center of each inner circular arc concave surface (21) on the same convex part (2) is superposed with the circle center of each circular arc convex surface (20), the circle centers of the inner circular arc concave surfaces (21) are superposed, the outer wall of the disc (1) is provided with an arc weight reducing notch (22) positioned between two adjacent convex parts (2), and the size of the arc weight reducing notch (22) along the thickness direction of the disc (1) is 1/4-1/5 of the total, circular depressions (10) formed by forging are respectively arranged at the centers of the end faces of the two ends of the disc (1).

2. A coupling forging according to claim 1, characterized in that two opposite faces of each projection (2) are plane and arranged in a splayed configuration, the plane and the convex arc surface (20) being connected by a first arc chamfer (23) and the plane and the concave inner arc surface (21) being connected by a second arc chamfer (24).

3. A coupling forging according to claim 1, characterised in that a rounded chamfer three (25) is provided at the end of each boss (2) remote from the disc (1).

4. A coupling forging according to claim 1, characterized in that the end surface of the disc (1) provided with the protrusions (2) is parallel to the other end surface of the disc (1).

5. The coupler forging of claim 1, wherein the number of the convex portions (2) is 4, and the number of the arc-shaped lightening gaps (22) is equal to that of the convex portions (2).