Multi-gear assembly method with phase angle requirement

Abstract

The invention relates to a multi-gear assembly method with phase angle requirements, which comprises the following steps of: S1, preparing a tool table which is provided with a positioning hole I, a positioning hole II, a positioning hole III and a positioning hole IV, and preparing a gear set to be assembled; s2, an output shaft gear is inserted into a first positioning hole, a middle shaft gear is inserted into a second positioning hole, an input shaft gear is inserted into a third positioning hole, a gear shaft of a duplex positioning gear is inserted into a fourth positioning hole, and phase marks are made on the middle shaft input gear and the middle shaft gear in advance; s3, nesting the intermediate shaft input gear and the intermediate shaft gear, and aligning the phase marks of the intermediate shaft input gear and the intermediate shaft gear; and S4, after the intermediate shaft input gear is cooled, the intermediate shaft input gear and the intermediate shaft gear are fixed, the axial positions of the intermediate shaft input gear and the intermediate shaft gear are fixed, and angle phases in the circumferential direction are fixed.

Description

Technical Field

[0001] The invention relates to the technical field of gear assembly, and in particular to a method for assembling multiple gears with phase angle requirements. Background Art

[0002] Multi-gear, also known as planetary gear transmission, is a complex transmission device composed of multiple gears meshing with each other. Its main components include the sun gear, planet gears and inner ring gear, in which the sun gear is located in the center, the planet gears rotate around the sun gear and are fixed on the planet carrier, and the inner ring gear is the outer ring of the planet carrier.

[0003] The assembly of multi-gears requires extremely high precision. Since the multi-gear system involves the meshing of multiple gears, the parameters of each gear, such as tooth shape, tooth pitch, tooth direction and relative angle, must be strictly controlled within the allowable tolerance range. Any slight deviation may lead to poor meshing between gears, thus affecting the performance of the entire transmission system.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention discloses a method for assembling multiple gears with phase angle requirements.

[0006] The technical solution adopted by the present invention is as follows:

[0007] A method for assembling a multi-gear with a phase angle requirement, characterized by comprising the following steps:

[0008] Step S1, prepare a tooling table, on which positioning holes 1, 2, 3 and 4 are opened, and prepare a gear set to be assembled, the gear set including an output shaft gear, an intermediate shaft gear, an intermediate shaft input gear, an input shaft gear and a double positioning gear;

[0009] Step S2, insert the output shaft gear into the first positioning hole, insert the intermediate shaft gear into the second positioning hole, insert the input shaft gear into the third positioning hole, insert the gear shaft of the double positioning gear into the fourth positioning hole, and make phase marks on the intermediate shaft input gear and the intermediate shaft gear in advance;

[0010] Step S3, heating the intermediate shaft input gear, thermally nesting the intermediate shaft input gear and the intermediate shaft gear, and aligning the phase marks of the two;

[0011] Step S4: After the intermediate shaft input gear is cooled, the intermediate shaft input gear and the intermediate shaft gear are fixed, and the axial positions and circumferential angular phases of the intermediate shaft input gear and the intermediate shaft gear are fixed.

[0012] Furthermore, the positioning hole one, the positioning hole two, the positioning hole three, and the positioning hole four are arranged in a cross orientation.

[0013] Further, in step S2, the output shaft gear is meshed with the intermediate shaft gear, the gear shaft of the double positioning gear is provided with external teeth, and the gear shaft of the double positioning gear is meshed with the output shaft gear.

[0014] Further, in step S2, the input shaft gear and the double positioning gear are meshed.

[0015] Furthermore, in step S3, the heating temperature ranges from 180 to 200°C.

[0016] Furthermore, in step S3, the heating time is controlled within 1 to 3 hours.

[0017] Furthermore, the positioning hole one and the positioning hole three are located on the center line of the long side of the tooling table.

[0018] Furthermore, the second positioning hole and the fourth positioning hole are located on the center line of the long side of the tooling table.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. Match the output shaft gear with positioning hole 1, the intermediate shaft gear with positioning hole 2, the input shaft gear with positioning hole 3, and the double positioning gear with positioning hole 4 to quickly complete the installation and positioning of multiple gears. Then install the intermediate shaft input gear and align the phase marks of the intermediate shaft input gear and the intermediate shaft gear to ensure smooth meshing of each gear, quickly and conveniently meet the relative angle requirements of each gear, and reduce the assembly error of multi-link gears.

[0021] 2. Use the shrink fit assembly method and select the appropriate heating range to expand the volume of the gear. Use this volume expansion effect to install the gear into the matching holes. After the gear cools down, its volume will shrink to ensure that the hole and the shaft will not slip, thus achieving a more stable interference fit. In addition, the two helical gears have a fixed axial position and a fixed angular phase in the circumferential direction, further improving the assembly accuracy.

[0022] 3. The assembly of multi-gears does not require additional proofreading work, which reduces the workload of staff and is conducive to improving the assembly efficiency of multi-gears. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural diagram of the tooling table.

[0024] Figure 2 This is a schematic diagram of the structure of the initial stage of multi-gear assembly.

[0025] Figure 3Schematic diagram of the structure of the intermediate shaft input gear phase mark.

[0026] Figure 4 This is a schematic diagram of the structure after the multi-gear assembly is completed.

[0027] In the figure: 1. workbench; 11. positioning hole one; 12. positioning hole two; 13. positioning hole three; 14. positioning hole four; 2. output shaft gear; 3. intermediate shaft gear; 31. intermediate shaft input gear; 4. input shaft gear; 5. double positioning gear. DETAILED DESCRIPTION

[0028] The specific implementation of the present invention is described below in conjunction with the accompanying drawings.

[0029] In order to make the purpose, technical scheme and advantages of the present invention clearer, the device proposed by the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the present invention will be clearer. It should be noted that the accompanying drawings adopt a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, please refer to the accompanying drawings. It should be noted that the structure, proportion, size, etc. illustrated by the accompanying drawings of this specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect that the present invention can produce and the purpose that can be achieved, should still fall within the scope of the technical content disclosed by the present invention.

[0030] Embodiment 1:

[0031] A tooling table 1, such as Figure 1 As shown, there are positioning holes 11, 12, 13, and 14 on it. The positioning holes 11, 12, 13, and 14 are arranged in a cross orientation, and the positioning holes 11 and 13 are located on the center line of the long side of the tooling table 1, and the positioning holes 2 and 14 are located on the center line of the long side of the tooling table 1. Each positioning hole plays the role of locating the gear installation position one by one.

[0032] Embodiment 2:

[0033] A method for assembling a multi-gear with a phase angle requirement comprises the following steps:

[0034] Step S1, prepare a tooling table 1, prepare a gear set to be assembled, the gear set includes an output shaft gear 2, an intermediate shaft gear 3, an intermediate shaft input gear 31, an input shaft gear 4, and a double positioning gear 5.

[0035] Step S2: Figure 2 As shown, the output shaft gear 2 is inserted into the positioning hole 11, the intermediate shaft gear 3 is inserted into the positioning hole 2 12, the input shaft gear 4 is inserted into the positioning hole 3 13, the gear shaft of the double positioning gear 5 is inserted into the positioning hole 4 14, the output shaft gear 4 and the intermediate shaft gear are meshed 3, the gear shaft of the double positioning gear 5 is provided with external teeth, the gear shaft of the double positioning gear 5 is meshed with the output shaft gear 2, and the input shaft gear 4 is meshed with the double positioning gear 5.

[0036] like Figure 3 As shown, phase marks are made on the intermediate shaft input gear 31 and the intermediate shaft gear 3. The output shaft gear and the intermediate shaft gear are meshed, and the gear shaft of the double positioning gear is provided with external teeth. The phase marks are used to facilitate the staff to quickly find the set assembly position between the two gears, ensure the assembly accuracy, and do not need to perform additional position calibration work, thereby improving the convenience of assembly.

[0037] Step S3, heat the intermediate shaft input gear 31, and heat-fit the intermediate shaft input gear 31 and the intermediate shaft gear 3, the heating temperature range is 180-200°C, and the heating time is controlled within 1-3 hours. During assembly, the staff aligns the phase marks of the intermediate shaft input gear 31 and the intermediate shaft gear 3. The shrink sleeve assembly method is adopted, and the appropriate heating range is selected to expand the volume of the gear. After the gear cools, its volume will shrink, ensuring that the hole and the shaft will not slip, and a more stable interference fit is achieved.

[0038] Step S4: Figure 4 As shown, after the intermediate shaft input gear 31 is cooled, the intermediate shaft input gear 31 and the intermediate shaft gear 3 are fixed, and the axial positions and circumferential angle phases of the two are fixed. At this time, each gear meshes smoothly, and the relative angle requirements of each gear are quickly and conveniently met, reducing the assembly error of the multi-gear and improving the assembly accuracy.

[0039] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0040] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A method for assembling multiple gears with phase angle requirements, characterized in that: The following steps are involved: Step S1, prepare a tooling table, on which positioning holes 1, 2, 3 and 4 are opened, and prepare a gear set to be assembled, the gear set including an output shaft gear, an intermediate shaft gear, an intermediate shaft input gear, an input shaft gear and a double positioning gear; Step S2, insert the output shaft gear into the first positioning hole, insert the intermediate shaft gear into the second positioning hole, insert the input shaft gear into the third positioning hole, insert the gear shaft of the double positioning gear into the fourth positioning hole, and make phase marks on the intermediate shaft input gear and the intermediate shaft gear in advance; Step S3, heating the intermediate shaft input gear, thermally nesting the intermediate shaft input gear and the intermediate shaft gear, and aligning the phase marks of the two; Step S4: After the intermediate shaft input gear is cooled, the intermediate shaft input gear and the intermediate shaft gear are fixed, and the axial positions and circumferential angular phases of the intermediate shaft input gear and the intermediate shaft gear are fixed.

2. A method for assembling multiple gears with phase angle requirements according to claim 1, characterized in that: The positioning hole one, the positioning hole two, the positioning hole three and the positioning hole four are arranged in a cross orientation.

3. The method for assembling multiple gears with phase angle requirements according to claim 1, characterized in that: In step S2, the output shaft gear is meshed with the intermediate shaft gear, the gear shaft of the double positioning gear is provided with external teeth, and the gear shaft of the double positioning gear is meshed with the output shaft gear.

4. A method for assembling multiple gears with phase angle requirements according to claim 3, characterized in that: In step S2, the input shaft gear and the duplex positioning gear are meshed.

5. The method for assembling multiple gears with phase angle requirements according to claim 1, characterized in that: In step S3, the heating temperature ranges from 180 to 200°C.

6. The method for assembling multiple gears with phase angle requirements according to claim 1, characterized in that: In step S3, the heating time is controlled within 1 to 3 hours.

7. The method for assembling multiple gears with phase angle requirements according to claim 2, characterized in that: The first positioning hole and the third positioning hole are located on the center line of the long side of the tooling table.

8. The method for assembling multiple gears with phase angle requirements according to claim 2, characterized in that: The second positioning hole and the fourth positioning hole are located on the center line of the long side of the tooling table.

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