A double gear pair tooth tool

Abstract

The utility model relates to duplex gear pair tooth frock technical field, specifically disclose a duplex gear pair tooth frock, including upper clamp, with the lower clamp of upper clamp integral moulding, the first alignment hole and the second alignment hole of the first alignment hole and the second alignment hole of circumferential even distribution opening in the lower clamp on the upper clamp, the upper clamp and the lower clamp integral moulding form the passageway, the first alignment hole with the second alignment hole coaxial line, still include the first mark and the second mark of delineation on the upper end tooth and the lower end tooth, the second mark is used with the second alignment hole correspondingly, and the device solves the problem that the conventional duplex gear processing aligns the artificial alignment and lacks the auxiliary alignment frock.

Description

Technical Field

[0001] This application relates to the field of double gear toothing tooling technology, and specifically discloses a double gear toothing tooling. Background Technology

[0002] A double gear is a compound gear structure composed of two coaxial gears spaced a certain distance apart. These two gears typically have the same module to ensure smooth meshing and power transmission. It generally consists of a gear ring and a gear body. The gear ring has straight teeth, and the gear body has splines. By integrating the two gears into a single unit, it achieves a compact structure and is often used in the sliding gear section of transmissions. In a transmission, different gear ratios are achieved by changing the meshing state of different gears, thereby changing the rotational speed or velocity of the output shaft.

[0003] The "tooth alignment" of double gears is a key process in gear machining and assembly. Especially given the special nature of its coaxial double gear structure, it is necessary to ensure that the tooth sequence, phase and meshing relationship of the two gears meet the design requirements. The two gears of the double gear are fixed on the same shaft, and it is necessary to ensure that the tooth grooves / tooth peaks of the two gears are strictly aligned in order to achieve precise meshing with other gears.

[0004] In actual machining: Double gears generally consist of upper and lower teeth. When made as a whole, the upper teeth are made by shaping (also known as planetary shafts), and the lower teeth are made by hobbing (also known as planetary gears). The upper teeth are aligned by inserting into the lower teeth. However, since the upper teeth made by shaping have low hardness and strength, in order to ensure hardness and strength, the upper and lower teeth are separately processed by shaping, hobbing, carburizing, etc. This brings difficulties to the assembly after machining. It is difficult to ensure the alignment between the teeth of the hobbing and shaping during the assembly process. If misalignment occurs, it will have an adverse effect on the double gear in actual application. Therefore, it is necessary to ensure alignment when pressing in the upper and lower teeth, otherwise the upper teeth will be difficult to remove.

[0005] In view of this, the present invention provides a double gear toothing fixture to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to solve the problem of the lack of auxiliary alignment fixtures for manual alignment after the traditional processing of double gears.

[0007] To achieve the above objectives, this utility model provides the following basic solution:

[0008] A double-gear tooth-aligning fixture includes an upper clamp, a lower clamp integrally formed with the upper clamp, a first alignment hole evenly distributed circumferentially on the lower clamp, and a second alignment hole evenly distributed circumferentially on the upper clamp. The upper clamp and the lower clamp are integrally formed to form a channel. The first alignment hole and the second alignment hole are coaxial. The fixture also includes a first mark and a second mark engraved on the upper and lower teeth. The second mark is used in correspondence with the second alignment hole.

[0009] Furthermore, both the upper clamp and the lower clamp have grooves on their outer sides. The grooves are used to accommodate the upper and lower teeth. The internal dimension of the groove on the lower clamp is equal to the outer diameter of the lower tooth. The distance from the second mark to the center of the lower tooth is equal to the distance from the center of the groove to the inner wall of the groove.

[0010] Furthermore, both the first and second marks are pigment marks, which are drawn uniformly around the upper and lower teeth based on the center of the upper and lower teeth before the upper and lower teeth are processed.

[0011] Furthermore, the size of the pigment mark is smaller than the size of the second alignment hole, and the size of the second alignment hole is equal to the size of the first alignment hole.

[0012] Furthermore, after the second alignment hole fully exposes the pigment mark on the lower tooth, the lower tooth stops rotating in the groove. The upper tooth aligns and installs itself with the lower tooth after seeing the position of the pigment mark in the second alignment hole based on the first alignment hole.

[0013] Furthermore, it also includes a snap-fit ​​block, which is used to reinforce the alignment and installation of the upper and lower teeth.

[0014] The principle and effect of this solution are as follows:

[0015] 1. Compared with existing technologies, this device is a tooling for double gears, used for aligning the upper and lower teeth. The core features are two points: 1. Markings before machining the upper and lower teeth, which can determine the initial machining teeth of the upper and lower teeth; 2. Alignment holes set on the tooling. After the alignment holes are aligned, the initial machining teeth of the upper and lower teeth are aligned, thus achieving the alignment of the upper and lower teeth. This ultimately solves the problem of the lack of auxiliary alignment tooling for manual alignment after machining of traditional double gears. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This paper shows a schematic diagram of the structure of a double gear tooth-pairing tool according to an embodiment of this application;

[0018] Figure 2 The diagram shows a planar schematic of the upper and lower teeth in a double-gear toothing fixture according to an embodiment of this application. Detailed Implementation

[0019] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0020] The reference numerals in the accompanying drawings include: upper tooth 1, lower tooth 2, first mark 3, second mark 4, upper clamp 5, snap-fit ​​block 6, first alignment hole 7, groove 9, channel 10, lower clamp 11, and second alignment hole 12.

[0021] Implementation, for example Figure 1 and Figure 2 As shown:

[0022] A double-gear tooth-aligning fixture includes an upper clamp 5, a lower clamp 11 integrally formed with the upper clamp 5, first alignment holes 7 evenly distributed circumferentially on the lower clamp 11, and second alignment holes 12 evenly distributed circumferentially on the upper clamp 5. The upper clamp 5 and the lower clamp 11 form a channel 10 after being integrally formed. The first alignment holes 7 and the second alignment holes 12 are coaxial. The fixture also includes a first mark 3 and a second mark 4 engraved on the upper end tooth 1 and the lower end tooth 2. The second mark 4 is used in correspondence with the second alignment hole 12.

[0023] like Figure 2 As shown, Figure 2 This is a planar schematic diagram of a double gear, including an upper gear 1 and a lower gear 2. Typically, the lower gear 2 is the larger gear, and the upper gear 1 is the smaller gear. The upper gear 1 is a through gear, meaning it has a connecting groove. The larger gear is a shaft tooth. A double gear is formed by inserting the connecting groove into the shaft tooth to achieve assembly. One of the core aspects of this design is that before machining the upper gear 1 and lower gear 2, a first mark 3 and a second mark 4 are directly marked on the upper gear 1 and lower gear 2. The first mark 3 and the second mark 4 are evenly distributed based on the respective centers of the upper gear 1 and lower gear 2. Figure 2 As shown, there are four of each of the first mark 3 and the second mark 4; both the first mark 3 and the second mark 4 are pigment marks, which are drawn uniformly around the upper tooth 1 and the lower tooth 2 based on the center of the upper tooth 1 and the lower tooth 2 before the upper tooth 1 and the lower tooth 2 are processed.

[0024] After marking, perform gear hobbing and gear shaping processes on the upper tooth 1 and lower tooth 2 respectively. After the teeth are cut, the upper tooth 1 and lower tooth 2 are assembled. At this time, this tooth-setting fixture is used to ensure accurate tooth alignment.

[0025] The upper clamp 5 and the lower clamp 11 both have grooves 9 on their outer sides. The grooves 9 are used to accommodate the upper tooth 1 and the lower tooth 2. The internal dimension of the groove 9 on the lower clamp 11 is equal to the outer diameter of the lower tooth 2. The distance from the second mark 4 to the center of the lower tooth 2 is equal to the distance from the center of the groove 9 to the inner wall of the groove 9.

[0026] Place the lower end tooth 2 into the groove 9 on the outside of the lower clamp 11, and then rotate the lower end tooth 2 so that the second mark 4 on the lower end tooth 2 is aligned with the second alignment hole 12, so that the second mark 4 can be seen from the second alignment hole 12. In order to ensure that the second mark 4 can be seen from the second alignment hole 12, the size of the pigment mark is smaller than the size of the second alignment hole 12. The size of the second alignment hole 12 is equal to the size of the first alignment hole 7. Since the first alignment hole 7 and the second alignment hole 12 are coaxial, the second mark 4 can also be seen from the first alignment hole 7. At this time, stop rotating the lower end tooth 2. As mentioned above, the lower end tooth 2 is a shaft tooth. The shaft of the lower end tooth 2 is located in the channel 10. The top of the shaft of the lower end tooth 2 passes through the top of the channel 10. At this time, the upper end tooth 1 is installed based on the shaft of the lower end tooth 2.

[0027] The first mark 3 on the upper tooth 1 is manually located. After the upper tooth 1 sees the position of the pigment mark in the second alignment hole 12 based on the first alignment hole 7, the upper tooth 1 is aligned and installed with the lower tooth 2. This is equivalent to the first mark 3 being located inside the second mark 4 and each being on its corresponding center line. At this time, the alignment and installation only involves placing the upper tooth 1 on the lower tooth 2, and the connecting groove and the shaft of the end tooth are not fully engaged. At this time, the operator manually reconfirms whether the first mark 3 and the second mark 4 correspond one-to-one. After confirmation, the snap-fit ​​block 6 is used. The snap-fit ​​block 6 is used to reinforce the alignment and installation of the upper tooth 1 and the lower tooth 2, mainly to control the upper clamp. The extra space in groove 9 in section 5 prevents wobbling during the alignment of the upper tooth 1 and the lower tooth 2, ensuring complete engagement between the connecting groove and the shaft of the end tooth. For the first mark 3 and the second mark 4, the gear cutting machine has an initial point and a stop point, which can be controlled by the machine. Therefore, the teeth cut based on the first mark 3 and the second mark 4 as the initial point are consistent. Subsequently, the alignment of the upper tooth 1 and the lower tooth 2 can be completed through the first mark 3 and the second mark 4. The disadvantage of this design is that it is dedicated to a specific purpose, and one tooling can only correspond to the alignment of one type of double gear. However, this tooling has a low cost and can be mass-produced.

[0028] This device solves the problem of traditional double gear alignment after machining, where manual alignment is required and there is a lack of auxiliary alignment fixtures.

[0029] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A double-gear tooth-pairing tooling, characterized in that, It includes an upper clamp, a lower clamp integrally formed with the upper clamp, a first alignment hole evenly distributed on the lower clamp and a second alignment hole evenly distributed on the upper clamp. The upper clamp and the lower clamp are integrally formed to form a channel. The first alignment hole and the second alignment hole are coaxial. It also includes a first mark and a second mark engraved on the upper end teeth and the lower end teeth. The second mark is used in correspondence with the second alignment hole.

2. The double gear tooth-pairing tooling according to claim 1, characterized in that, Both the upper clamp and the lower clamp have grooves on their outer sides. The grooves are used to accommodate the upper and lower teeth. The internal dimension of the groove on the lower clamp is equal to the outer diameter of the lower tooth. The distance from the second mark to the center of the lower tooth is equal to the distance from the center of the groove to the inner wall of the groove.

3. The double gear tooth-pairing tooling according to claim 2, characterized in that, Both the first and second marks are pigment marks, which are drawn uniformly around the upper and lower teeth based on the center of the upper and lower teeth before the upper and lower teeth are processed.

4. The double gear tooth-pairing tooling according to claim 3, characterized in that, The size of the pigment mark is smaller than the size of the second alignment hole, and the size of the second alignment hole is equal to the size of the first alignment hole.

5. A double gear tooth-pairing tooling according to claim 4, characterized in that, After the second alignment hole fully exposes the pigment mark on the lower tooth, the lower tooth stops rotating in the groove. The upper tooth aligns and installs itself with the lower tooth after seeing the position of the pigment mark in the second alignment hole based on the first alignment hole.

6. A double gear tooth-pairing tooling according to claim 5, characterized in that, It also includes a snap-fit ​​block, which is used to reinforce the alignment of the upper and lower teeth during installation.

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