CN212429676U

CN212429676U - Combined gear

Info

Publication number: CN212429676U
Application number: CN202020785779.3U
Authority: CN
Inventors: 肖元创; 陈建能; 刘春建; 亢汉宁; 郭鹏; 梁小华; 林李健; 郑洁澜; 田季
Original assignee: Shenzhen Longde Technology Co ltd
Current assignee: Huizhou Longde Technology Co ltd
Priority date: 2020-05-12
Filing date: 2020-05-12
Publication date: 2021-01-29
Anticipated expiration: 2030-05-12

Abstract

The utility model discloses a composite gear, composite gear includes piece tooth and axle tooth, the axle tooth passes through interference fit and is connected with the piece tooth, the axle tooth includes the axial region, the teeth of a cogwheel and tooth's socket, the one end of axle tooth is a plurality of teeth of a cogwheel, the tooth's socket is seted up and is located between two adjacent teeth of a cogwheel along the axial of axle tooth, the axial region inserts in the shaft hole of tooth piece, be cooperation portion on the axial region between two adjacent tooth's sockets, the contact of the shaft hole inner wall of cooperation portion and piece tooth, the piece tooth is equipped with the riveting hole in the axial region periphery, cooperation portion corresponds the riveting hole department and extends towards the tooth's socket of both sides and forms. Through the cooperation position area of contact between increase piece tooth and the axle tooth, reach the purpose that increases axial sliding force, solve under the condition that the atress was used the combination gear can appear the cooperation position problem of skidding the inefficacy.

Description

Combined gear

Technical Field

The utility model relates to a gear machining technical field especially relates to a combination gear.

Background

The gear combination used in the industry at present is interference fit, is limited by the size of the outside diameter of the shaft tooth reference circle, has small selectable range of a matching position shaft and a hole (shown in figures 6 and 7), can bear small circumferential torque force, has great limitation on the use of occasions with large torque force output, can generate the phenomenon of slipping failure of the matching position under the condition of stressed use, and enables the combined gear not to work normally.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a composite gear carries out the ring riveting outward through the cooperation position to chip tooth and axle tooth and processes, and the cooperation position area of contact between increase chip tooth and the axle tooth solves under the condition that the atress used composite gear can appear the phenomenon that cooperation position skidded inefficacy.

The utility model provides a technical scheme does: the utility model provides a combined gear, including piece tooth and axle tooth, the axle tooth passes through interference fit and is connected with the piece tooth, the axle tooth includes the axial region, the teeth of a cogwheel and tooth's socket, the one end of axle tooth is a plurality of teeth of a cogwheel, the tooth's socket is seted up and is located between two adjacent teeth of a cogwheel along the axial of axle tooth, the axial region inserts in the shaft hole of tooth piece, be cooperation portion on the axial region between two adjacent tooth's sockets, cooperation portion and the contact of the shaft hole inner wall of piece tooth, the piece tooth is equipped with the riveting hole in the axial region periphery, cooperation portion corresponds the riveting hole department and extends towards the tooth's. Through the cooperation position area of contact between increase piece tooth and the axle tooth, reach the purpose that increases axial sliding force, solve under the condition that the atress was used the combination gear can appear the cooperation position problem of skidding the inefficacy.

Further, the riveting hole is arc-shaped, and a plurality of riveting holes are equidistantly distributed on the same circumference.

Further, the plurality of extending portions are connected with each other, and the plurality of extending portions and the plurality of matching portions form a ring shape.

According to the ring riveting method of the combined gear, the ring riveting device is adopted to rivet and press the sheet teeth on the periphery of the shaft part to form the riveting holes, the riveting pressure at the riveting holes on the sheet teeth is transferred towards the matching part in the riveting process, and the matching part is extruded by the riveting pressure and extends towards the tooth grooves on two sides to form the extending part.

The ring riveting device comprises an upper die, a plurality of riveting teeth are arranged on the end face of the upper die and are arc-shaped, the riveting teeth are distributed on the same circumference at equal intervals, the axis of the upper die is aligned with the axis of the combination gear, the riveting teeth of the upper die are used for riveting the end face of the sheet tooth from top to bottom, and a plurality of riveting holes are formed in the periphery of the matching surface of the riveting teeth and the shaft teeth of the riveting teeth.

The ring riveting device further comprises a lower die provided with a die core hole, and the shaft teeth are accommodated in the die core hole for positioning.

The ring riveting device further comprises a positioning mold core, the positioning mold core is located in the mold core hole and comprises a main body part and an inserting part, the diameter of the main body part is larger than that of the shaft hole of the shaft tooth, and the inserting part is used for inserting into the shaft hole of the shaft tooth to position the combined gear.

The ring riveting device further comprises an elastic piece, a movable cavity is further formed in the lower die, the movable cavity is communicated with the outside through a die core hole, a step portion is arranged on the lower die in the protruding portion of the die core hole, a clamping portion is further arranged on the positioning die core, the two ends of the main body portion are connected with the inserting portion and the clamping portion respectively, the diameter of the clamping portion is larger than that of the main body portion, the clamping portion is located in the movable cavity, the diameter of the clamping portion is larger than that of the die core hole in the step portion, the elastic piece is located in the movable cavity, one end of the elastic piece is abutted to the clamping portion, and the. Through setting up the elastic component, can pop out the convenient operation smoothly at gear ring riveting back auxiliary gear.

The ring riveting device further comprises a machine-meter screw, the machine-meter screw is installed at the bottom of the lower die, one end of the machine-meter screw is located in the movable cavity, the other end of the machine-meter screw is exposed to the outside, one end of the elastic piece is abutted to the clamping portion, and the other end of the elastic piece is abutted to the machine-meter screw. According to the magnitude of the actual using force, the screw can be effectively advanced and retreated from top to bottom, and the effect to be achieved by ring riveting can be conveniently controlled and realized.

The elastic piece is a spring.

The ring riveting device further comprises a base, the lower die comprises an upper cylinder and a lower cylinder, the diameter of the upper cylinder is larger than that of the lower cylinder, a through hole is formed in the base, the diameter of the through hole is matched with that of the lower cylinder, and the lower cylinder is embedded into the through hole. The lower die and the base are designed in such a way that the detachability of the tool and the replaceability of parts are considered, and the tool is simple and convenient to operate, safe and reliable.

Compared with the prior art, the utility model discloses the beneficial effect who brings:

the utility model discloses a composite gear carries out the riveting through the fitting surface periphery to composite gear's piece tooth and axle tooth, forms a plurality of riveting holes, and the cooperation portion corresponds the riveting hole department and extends towards the tooth's socket of both sides and form the extension, the shaft hole inner wall of extension butt piece tooth. Through the cooperation position area of contact between increase piece tooth and the axle tooth, reach the purpose that increases axial sliding force, solve under the condition that the atress was used the combination gear can appear the cooperation position problem of skidding the inefficacy.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.

Fig. 1 is an exploded view of the composite gear of the present invention.

Fig. 2 is a sectional view of the composite gear of the present invention.

Fig. 3 is an end view of the composite gear of the present invention.

Fig. 4 is an exploded view of the ring riveting device of the present invention.

Fig. 5 is a sectional view of the ring riveting device of the present invention.

Fig. 6 is an exploded view of a prior art combination gear.

Fig. 7 is an end view of a prior art combination gear.

The die comprises an upper die 1, riveting teeth 11, a lower die 2, an upper cylinder 21, a lower cylinder 22, a die core hole 23, a movable cavity 24, a step part 25, a positioning die core 3, a main body part 31, an inserting part 32, a clamping part 33, an elastic part 4, a machine-meter screw 5, a base 6, a through hole 61, a combined gear 7, sheet teeth 71, shaft teeth 72, a shaft part 73, gear teeth 74, a tooth groove 75, a matching part 76, a riveting hole 77 and an extending part 78.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described in more detail with reference to the accompanying drawings and embodiments. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "upper", "lower", "left", "right", "inner", "outer" and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Examples

The present embodiment provides a composite gear 7 including plate teeth 71 and shaft teeth 72.

As shown in fig. 1, fig. 2 and fig. 3, the axle tooth passes through interference fit and is connected with the sheet tooth, the axle tooth includes axial region 73, teeth of a cogwheel 74 and tooth's socket 75, the one end of axle tooth is a plurality of teeth of a cogwheel, the tooth's socket is seted up along the axial of axle tooth and is located between two adjacent teeth of a cogwheel, the axial region inserts in the shaft hole of tine piece, be cooperation portion 76 on the axial region between two adjacent tooth's sockets, cooperation portion and the contact of the shaft hole inner wall of sheet tooth, the sheet tooth is equipped with riveting hole 77 in axial region periphery, cooperation portion corresponds riveting hole department and extends towards the tooth's socket of both sides and forms extension portion 78, the shaft hole inner wall of extension portion butt sheet tooth. Through the cooperation position area of contact between increase piece tooth and the axle tooth, reach the purpose that increases axial sliding force, solve under the condition that the atress was used the combination gear can appear the cooperation position problem of skidding the inefficacy. In this embodiment, the riveting hole is arc, and four riveting holes equidistance distribute on same circumference.

As shown in fig. 4 and 5, the ring riveting device comprises an upper die 1, a lower die 2, a positioning die core 3, an elastic piece 4, a machine meter screw 5 and a base 6.

As shown in fig. 4 and 5, the end surface of the upper die is provided with a plurality of riveting teeth 11, the riveting teeth are arc-shaped, and the plurality of riveting teeth are equidistantly distributed on the same circumference. In the present embodiment, the rivet teeth are four in number.

As shown in fig. 4 and 5, the lower mold includes an upper cylinder 21 and a lower cylinder 22, the diameter of the upper cylinder is larger than that of the lower cylinder, a through hole 61 is formed in the base, the diameter of the through hole matches with that of the lower cylinder, and the lower cylinder is embedded into the through hole.

As shown in fig. 4 and 5, a core hole 23 and a movable cavity 24 are formed inside the lower die, the positioning core is located in the core hole, the movable cavity is communicated with the outside through the core hole, the lower die is provided with a step portion 25 protruding from the core hole, the positioning core comprises a main body portion 31, an inserting portion 32 and a clamping portion 33, two ends of the main body portion are respectively connected with the inserting portion and the clamping portion, the diameter of the main body portion is larger than that of the inserting portion, the diameter of the clamping portion is larger than that of the main body portion, the clamping portion is located in the movable cavity, the diameter of the clamping portion is larger than that of the core hole at the step portion, the elastic piece is located in the movable cavity, one end of the elastic piece abuts against the clamping portion, the other end of the elastic piece abuts against the bottom of the movable cavity, the diameter of the main body portion. In this embodiment, the elastic member is a spring. Through setting up the elastic component, can pop out the convenient operation smoothly at gear ring riveting back auxiliary gear.

As shown in fig. 4 and 5, the machine-meter screw is installed at the bottom of the lower die, one end of the machine-meter screw is located in the movable cavity, the other end of the machine-meter screw is exposed to the outside, one end of the elastic piece is abutted to the clamping portion, and the other end of the elastic piece is abutted to the machine-meter screw. According to the magnitude of the actual using force, the screw can be effectively advanced and retreated from top to bottom, and the effect to be achieved by ring riveting can be conveniently controlled and realized.

The ring riveting method of the ring riveting device comprises the steps that firstly, shaft teeth of the combined gear are placed in the mold core holes, the inserting parts are inserted into the shaft holes of the combined gear, the end faces of the shaft teeth of the combined gear abut against the main body part to complete positioning of the combined gear, then, the shaft center of the upper mold is aligned with the shaft center of the combined gear, the end faces of the sheet teeth are riveted by the rivet teeth of the upper mold from top to bottom, the periphery of the matching faces of the rivet teeth and the shaft teeth is riveted to form a plurality of riveting holes, in the riveting process, along with downward pressing of the sheet teeth by the upper mold, the positioning mold core axially moves downwards in the mold core holes and the movable cavity until the end faces of the sheet teeth abut against the top face of the lower mold, after riveting is completed, the upper mold is removed, the elastic piece restores to deform to push the positioning mold core to axially move upwards until the end. Through the cooperation position area of contact between increase piece tooth and the axle tooth of riveting ring, reach the purpose that increases axial sliding force, can appear the problem that cooperation position skidded the inefficacy under the condition of solving the composite gear atress and using.

It should be noted that the preferred embodiments of the present invention are described in the specification and the drawings, but the present invention can be realized in many different forms, and is not limited to the embodiments described in the specification, and these embodiments are not provided as additional limitations to the present invention, and are provided for the purpose of making the understanding of the disclosure of the present invention more thorough and complete. Moreover, the above technical features are combined with each other to form various embodiments which are not listed above, and all the embodiments are regarded as the scope of the present invention; further, modifications and variations will occur to those skilled in the art in light of the foregoing description, and it is intended to cover all such modifications and variations as fall within the true spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a combined gear, a serial communication port, including piece tooth and axle tooth, the axle tooth passes through interference fit and is connected with the piece tooth, the axle tooth includes the axial region, the teeth of a cogwheel and tooth's socket, the one end of axle tooth is a plurality of teeth of a cogwheel, the tooth's socket is seted up and is located between two adjacent teeth of a cogwheel along the axial of axle tooth, the axial region inserts in the shaft hole of tooth piece, be cooperation portion on the axial region between two adjacent tooth's sockets, cooperation portion and the contact of the shaft hole inner wall of piece tooth, the piece tooth is equipped with the riveting hole in the axial region periphery, cooperation portion corresponds riveting hole department and extends towards the tooth's.

2. The composite gear of claim 1, wherein the rivet holes are arcuate, and the plurality of rivet holes are equidistantly spaced about the same circumference.

3. The composite gear of claim 1, wherein the plurality of extending portions are connected to each other, and the plurality of extending portions and the plurality of engaging portions form a ring shape.