High-precision gear grinder electric spindle

Abstract

The utility model relates to a high-precision gear grinder electric spindle which comprises a spindle body, a main bearing device arranged on the spindle body, a grinding wheel device arranged on the main bearing device, an encoding device connected to the other end of the spindle body through an auxiliary bearing device, a rear cover device arranged at the outer end of the encoding device, and a motor device connected to the spindle body. And a shell is arranged outside the motor device. Therefore, the multiple sets of precise angular contact ball shafts are adopted to participate in transmission, stable and synchronous rotation of the front end and the rear end of the main shaft body can be achieved, motion jamming cannot be caused, and driving transmission under high-speed rotation is achieved. The grinding wheel disc is of a conical surface structure, and convenient and stable combination is achieved. The grinding wheel disc can be quickly replaced according to actual requirements in the field layout period, and it can be guaranteed that the combined end face after replacement is stable and free of gaps.

Description

TECHNICAL FIELD

[0001] The utility model relates to a transmission gear device for processing equipment, especially to a high-precision gear grinding motorized spindle. BACKGROUND

[0002] For the prior art, gear is a key component in the transmission system, which is applied to various industries. In the field of precision transmission, the precision of gear has a great influence on transmission, and the transmission precision is high, and there are requirements such as running height and low vibration.

[0003] The machining precision and surface quality of gear are closely related to these factors, therefore, how to machine the gear with precision meeting the requirements is an important topic. In the current gear machining mode, there are gear shaping, gear milling and gear grinding modes. If a gear with high precision grade is required, the last process needs to grind the gear. That is, through precision grinding, the surface quality of the gear can reach a relatively high grade, and the meshing precision of the gear can be guaranteed.

[0004] At present, the main shaft of the gear grinding is mostly a mechanical shaft, and the conventional mode has a belt drive, a motor direct drive and a gearbox drive. However, the structure of the mechanical shaft has an intermediate transmission link, can only run at low speed, has low transmission efficiency, large vibration and low gear grinding efficiency. Moreover, the surface quality precision grade of the gear grinding gear cannot meet the higher requirements.

[0005] In view of the above defects, the designer actively researches and innovates to create a high-precision gear grinding motorized spindle, so that it has more industrial utilization value. CONTENT OF THE UTILITY MODEL

[0006] To solve the above technical problems, the purpose of the utility model is to provide a high-precision gear grinding motorized spindle.

[0007] The high-precision gear grinding motorized spindle of the utility model comprises a main shaft body, wherein: a main bearing device is arranged on the main shaft body, the main bearing device is provided with a grinding wheel device, the other end of the main shaft body is connected with a coding device through a secondary bearing device, the outer end of the coding device is provided with a rear cover device, a motor device is connected to the main shaft body, a shell is arranged outside the motor device, the shell is connected with the main bearing device and the secondary bearing device respectively, the main bearing device comprises a main bearing seat, a locking assembly is arranged at one end of the main bearing seat, a main adjusting spacer is arranged at the other end of the main bearing seat, a precision combination assembly is formed between the locking assembly and the main adjusting spacer, the precision combination assembly is a plurality of main precision bearings connected in series back to back, and the main shaft body passes through the locking assembly, the main adjusting spacer and the precision combination assembly respectively.

[0008] Further, the high-precision gear grinding and electrical spindle has the advantages that the grinding wheel device comprises a grinding wheel disc connected with the spindle body, the grinding wheel disc is provided with a fixed disc, a pressure disc is sleeved on the fixed disc, and a self-balancing assembly is connected to the pressure disc through a connecting disc; the spindle body is provided with a conical surface structure, the grinding wheel disc is sleeved outside the conical surface structure; and the grinding wheel disc and the fixed disc are connected with the spindle body through positioning screws.

[0009] Further, the high-precision gear grinding and electrical spindle has the advantages that the high-precision gear grinding and electrical spindle has the advantages that the grinding wheel device comprises a grinding wheel disc connected with the spindle body, the grinding wheel disc is provided with a fixed disc, a pressure disc is sleeved on the fixed disc, and a self-balancing assembly is connected to the pressure disc through a connecting disc; the spindle body is provided with a conical surface structure, the grinding wheel disc is sleeved outside the conical surface structure; and the grinding wheel disc and the fixed disc are connected with the spindle body through positioning screws.

[0010] Further, the high-precision gear grinding and electrical spindle has the advantages that the high-precision gear grinding and electrical spindle has the advantages that the grinding wheel device comprises a grinding wheel disc connected with the spindle body, the grinding wheel disc is provided with a fixed disc, a pressure disc is sleeved on the fixed disc, and a self-balancing assembly is connected to the pressure disc through a connecting disc; the spindle body is provided with a conical surface structure, the grinding wheel disc is sleeved outside the conical surface structure; and the grinding wheel disc and the fixed disc are connected with the spindle body through positioning screws.

[0011] Further, the high-precision gear grinding and electrical spindle has the advantages that the high-precision gear grinding and electrical spindle has the advantages that the grinding wheel device comprises a grinding wheel disc connected with the spindle body, the grinding wheel disc is provided with a fixed disc, a pressure disc is sleeved on the fixed disc, and a self-balancing assembly is connected to the pressure disc through a connecting disc; the spindle body is provided with a conical surface structure, the grinding wheel disc is sleeved outside the conical surface structure; and the grinding wheel disc and the fixed disc are connected with the spindle body through positioning screws.

[0012] Further, the high-precision gear grinding and electrical spindle has the advantages that the high-precision gear grinding and electrical spindle has the advantages that the grinding wheel device comprises a grinding wheel disc connected with the spindle body, the grinding wheel disc is provided with a fixed disc, a pressure disc is sleeved on the fixed disc, and a self-balancing assembly is connected to the pressure disc through a connecting disc; the spindle body is provided with a conical surface structure, the grinding wheel disc is sleeved outside the conical surface structure; and the grinding wheel disc and the fixed disc are connected with the spindle body through positioning screws.

[0013] Further, the high-precision gear grinding and electrical spindle has the advantages that the high-precision gear grinding and electrical spindle has the advantages that the grinding wheel device comprises a grinding wheel disc connected with the spindle body, the grinding wheel disc is provided with a fixed disc, a pressure disc is sleeved on the fixed disc, and a self-balancing assembly is connected to the pressure disc through a connecting disc; the spindle body is provided with a conical surface structure, the grinding wheel disc is sleeved outside the conical surface structure; and the grinding wheel disc and the fixed disc are connected with the spindle body through positioning screws.

[0014] Further, the high-precision gear grinding and electrical spindle has the advantages that the high-precision gear grinding and electrical spindle has the advantages that the grinding wheel device comprises a grinding wheel disc connected with the spindle body, the grinding wheel disc is provided with a fixed disc, a pressure disc is sleeved on the fixed disc, and a self-balancing assembly is connected to the pressure disc through a connecting disc; the spindle body is provided with a conical surface structure, the grinding wheel disc is sleeved outside the conical surface structure; and the grinding wheel disc and the fixed disc are connected with the spindle body through positioning screws.

[0015] Further, the high-precision gear grinding and electrical spindle has the advantages that the high-precision gear grinding and electrical spindle has the advantages that the grinding wheel device comprises a grinding wheel disc connected with the spindle body, the grinding wheel disc is provided with a fixed disc, a pressure disc is sleeved on the fixed disc, and a self-balancing assembly is connected to the pressure disc through a connecting disc; the spindle body is provided with a conical surface structure, the grinding wheel disc is sleeved outside the conical surface structure; and the grinding wheel disc and the fixed disc are connected with the spindle body through positioning screws.

[0016] The high-precision gear grinding and electrical spindle has the advantages that

[0017] 1. The use of multiple sets of precision angular contact ball bearings for transmission can realize the stable synchronous rotation of the front and rear ends of the main shaft body, and will not cause movement jamming, realizing driving transmission under high speed operation.

[0018] 2. Through the cooperation of the front and rear distributed main bearing device and auxiliary bearing device, the rigidity of the main shaft body can be effectively assisted to improve.

[0019] 3. The grinding disc utilizes a conical surface structure to realize convenient and stable combination. During on-site layout, the grinding disc can be quickly replaced according to actual needs, and the combined end surface after replacement can be ensured to be stable and gapless.

[0020] 4. It has better combination integrity and no large resonance during operation.

[0021] 5. The overall structure is simple, easy to manufacture and use, and can adapt to the grinding wheel shaft driving needs of various processing equipment.

[0022] The above description is only a summary of the technical scheme of the present application. In order to more clearly understand the technical means of the present application, and can be implemented in accordance with the content of the specification, the following is a detailed description of the preferred embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0023] Fig. 1 is a cross-sectional structure diagram of a high-precision gear grinding and electrical main shaft.

[0024] Fig. 2 is a schematic diagram of the overall structure of the high-precision gear grinding and electrical main shaft.

[0025] The meanings of the various reference signs in the drawings are as follows.

[0026] 1. Self-balancing assembly 2. Adapter disc

[0027] 3. Pressing disc 4. Fixed disc

[0028] 5. Grinding disc 6. Locking nut

[0029] 7. End cover 8. Main bearing seat

[0030] 9. Inner spacer 10. Outer spacer

[0031] 11. Main adjustment spacer 12. Housing

[0032] 13. Cooling water jacket 14. Motor body

[0033] 15. Main shaft body 16. Auxiliary adjustment spacer

[0034] 17. Auxiliary bearing seat 18. Encoder

[0035] 19 rear cover assembly 20 bearing gland

[0036] 21 sealing ring 22 protective cover

[0037] 23 encoding gear 24 fixed seat

[0038] 25 main precision bearing 26 secondary precision bearing

[0039] 27 quick connector 28 power line socket

[0040] 29 signal line socket 30 31 32 33 34 DETAILED DESCRIPTION

[0043] The specific embodiments of the utility model will be described in further detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but are not used to limit the scope of the utility model.

[0044] As Figs. 1-2 The high-precision gear grinding motorized spindle comprises a spindle body 15, which is different in that the spindle body 15 is provided with a main bearing device, the main bearing device is located at the position where the spindle body 15 is provided with a grinding wheel device, and is used for realizing stable driving transmission. Meanwhile, the other end of the spindle body 15 is connected with an encoding device through a secondary bearing device, so as to improve the running angle of the whole spindle. In addition, the outer end of the encoding device is provided with a rear cover device, considering the need of subsequent power supply and cooling medium import. In order to meet the driving needs during operation, the spindle body 15 is connected with a motor device. Furthermore, the motor device is provided with a shell 12 outside, the shell 12 is connected with the main bearing device and the secondary bearing device respectively, has better integrity, and can realize effective isolation protection of the internal various devices and components. During implementation, the main bearing device comprises a main bearing seat 8, one end of the main bearing seat 8 is provided with a locking assembly, the other end of the main bearing seat 8 is provided with a main adjusting spacer 11, and the locking assembly and the main adjusting spacer 11 constitute a precision combination assembly. Considering the effective filling of the possible assembly tolerance, the tail end of the main bearing seat 8 is connected with an end cover 7 through a locking nut 6, and the end cover 7 and the locking nut 6 are respectively sleeved on the spindle body 15.

[0045] In order to realize effective high-precision rotary guidance, the precision combination assembly is a plurality of main precision bearings 25 connected in series back to back, and the spindle body 15 respectively passes through the locking assembly, the main adjusting spacer 11 and the precision combination assembly.

[0046] In combination with the preferred embodiment of the utility model, the auxiliary bearing device comprises an auxiliary bearing seat 17, and the auxiliary bearing seat 17 is respectively provided with an auxiliary adjusting spacer 16 and a fixed seat 24. Meanwhile, an auxiliary combination assembly is arranged between the auxiliary adjusting spacer 16 and the fixed seat 24, and the auxiliary combination assembly is a plurality of auxiliary precision bearings 26 connected in series back to back. In order to meet the stability of combination, the auxiliary adjusting spacer 16, the fixed seat 24 and the auxiliary precision bearings 26 are all sleeved on the main shaft body 15. In consideration of the proper contact limit of the end surface of the main shaft body 15, a limiting step can be arranged on the main shaft body 15, and the limiting step is in contact with the auxiliary adjusting spacer 16. Furthermore, in consideration of the need of overall positioning, one end of the shell 12 is screw-connected with the auxiliary bearing seat 17.

[0047] During implementation, in order to meet the stable and cooperative operation of the two ends of the main shaft body 15, the main precision bearings 25 are four, which are stacked two by two and respectively form bearing groups, and the bearing groups are provided with inner spacers 9 and outer spacers 10. In this way, the main precision bearings 25 can be used in groups, and have proper spacing gaps, so that no interference occurs. Meanwhile, in order to cooperate with the operation of the main precision bearings 25, two auxiliary precision bearings 26 can be used. Furthermore, in the more optimized implementation mode, the main precision bearings 25 and the auxiliary precision bearings 26 can be selected as precision angular contact ball bearings.

[0048] Further, the utility model adopts the grinding wheel device which comprises the grinding wheel disc 5 connected with the main shaft body 15, the grinding wheel disc 5 is provided with the fixed disc 4, the fixed disc 4 is sleeved with the pressure disc 3. Meanwhile, the pressure disc 3 is connected with the self-balancing assembly 1 through the adapter disc 2. In this way, according to actual needs, the self-balancing assembly 1 with proper counterweight and shape can be selected to reduce the vibration caused by the operation of the main shaft body 15. Furthermore, the main shaft body 15 is provided with a conical surface structure, and the grinding wheel disc 5 is sleeved outside the conical surface structure. Thus, the grinding wheel disc 5 can be better attached to the main shaft body 15. Furthermore, in consideration of the need of combination confidentiality, the grinding wheel disc 5 and the fixed disc 4 are connected with the main shaft body 15 through the positioning screw.

[0049] In combination with the actual implementation, the coding device comprises the coding gear 23 connected with the fixed seat 24 of the auxiliary bearing device. Meanwhile, the coding gear 23 is provided with the encoder 18, and the encoder 18 is provided with the protective cover 22. In this way, according to actual needs, the coding configuration of the coding gear 23 can be carried out. Furthermore, in order to facilitate the stable driving of the main shaft body 15, the motor device comprises the motor body 14 connected with the main shaft body 15, the motor body 14 and the shell 12 are distributed with the cooling water jacket 13, and the shell 12 is connected with the main bearing device and the auxiliary bearing device through the locking screw. In this way, the cooling needs of long-time operation can be met.

[0050] Further, the rear cover device comprises a bearing gland 20 screw-connected with the main shaft body 15, and the bearing gland 20 is sleeved with a rear cover assembly 19, which is connected with the auxiliary bearing seat 17 of the auxiliary bearing device through screws. Meanwhile, the rear cover assembly 19 is provided with a plurality of quick connectors 27, a power line socket 28 and a signal line socket 29. In this way, the unified interface distribution can be realized, and the same side wiring can be performed according to the needs. During the implementation, the preset interfaces of the motor body 14, the encoder 18 and the like are connected, and the quick connector 27 can also be connected with the cooling jacket 13 to realize the import and exchange of the cooling medium.

[0051] During the manufacturing, in order to improve the overall sealing effect and better fill the possible tolerance gap, the main bearing device, the housing 12, the auxiliary bearing device and the rear cover device are all provided with a sealing ring 21.

[0052] The working principle of the utility model is as follows:

[0053] The user adjusts the encoding device according to the actual needs. Then, the utility model is inserted into the corresponding equipment preset mechanical shaft connection end. Then, the quick connector 27, the power line socket 28 and the signal line socket 29 are connected with the corresponding pipelines. Then, the equipment is started, and the utility model is driven to participate in the transmission.

[0054] Through the above text description and combined with the drawings, it can be seen that after adopting the utility model, the following advantages are obtained:

[0055] 1. A plurality of precision angular contact ball bearings are used to participate in transmission, which can realize stable and synchronous rotation of the front and rear ends of the main shaft body, and will not cause movement jamming, and realize driving transmission under high speed operation.

[0056] 2. The front and rear distributed main bearing device and auxiliary bearing device cooperate with each other, which can effectively assist to improve the rigidity of the main shaft body.

[0057] 3. The grinding disc utilizes the conical surface structure to realize convenient and stable combination. During the on-site layout, the grinding disc can be quickly replaced according to the actual needs, and the combined end surface after replacement can be ensured to be stable and gapless.

[0058] 4. It has better combination integrity, and there is no large resonance during operation.

[0059] 5. The overall structure is simple, and it is convenient to manufacture and use, and can adapt to the grinding wheel shaft driving needs of various processing equipment.

[0060] In addition, the indicated direction or position relationship described in the utility model is the direction or position relationship shown based on the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or structure must have a specific direction or be operated in a specific direction, so it cannot be understood as a limitation on the utility model.

[0061] The above is only the preferred embodiment of the utility model, and is not used to limit the utility model, and it should be pointed out that, for ordinary skilled in the art, under the premise of not departing from the technical principle of the utility model, a number of improvements and modifications can be made, and these improvements and modifications should be regarded as the protection scope of the utility model.

Claims

1. A high-precision gear grinding spindle, comprising a spindle body, characterized in that: The main shaft body is provided with a main bearing device, the main bearing device is provided with a grinding wheel device, the other end of the main shaft body is connected with an encoding device through a secondary bearing device, the outer end of the encoding device is provided with a rear cover device, the main shaft body is connected with a motor device, the motor device is provided with a shell, the shell is connected with the main bearing device and the secondary bearing device respectively, the main bearing device comprises a main bearing seat, one end of the main bearing seat is provided with a locking assembly, the other end of the main bearing seat is provided with a main adjusting spacer, the locking assembly and the main adjusting spacer form a precision combination assembly, the precision combination assembly is a plurality of main precision bearings connected in series back to back, the main shaft body passes through the locking assembly, the main adjusting spacer and the precision combination assembly respectively.

2. The high-precision gear grinding spindle according to claim 1, characterized in that: The grinding wheel device comprises a grinding wheel disc connected with the main shaft body, the grinding wheel disc is provided with a fixed disc, the fixed disc is sleeved with a pressure disc, the pressure disc is connected with a self-balancing assembly through a adapter disc; the main shaft body is provided with a conical surface structure, the grinding wheel disc is sleeved outside the conical surface structure; the grinding wheel disc and the fixed disc are connected with the main shaft body through positioning screws.

3. The high-precision gear grinding spindle according to claim 1, characterized in that: The secondary bearing device comprises a secondary bearing seat, the secondary bearing seat is provided with a secondary adjusting spacer and a fixed seat respectively, an auxiliary combination assembly is arranged between the secondary adjusting spacer and the fixed seat, the auxiliary combination assembly is a plurality of secondary precision bearings connected in series back to back; the secondary adjusting spacer, the fixed seat and the secondary precision bearings are all sleeved on the main shaft body; the main shaft body is provided with a limiting step, the limiting step is in contact with the secondary adjusting spacer; one end of the shell is screw-connected with the secondary bearing seat.

4. The high-precision gear grinding spindle according to claim 1, characterized in that: The encoding device comprises an encoding gear connected with the secondary bearing device, the encoding gear is provided with an encoder, the encoder is provided with a protective cover outside.

5. The high-precision gear grinding spindle of claim 1, wherein: The motor device comprises a motor body connected with the main shaft body, cooling water jackets are distributed between the motor body and the shell, the shell is connected with the main bearing device and the secondary bearing device through locking screws respectively.

6. The high-precision gear grinding spindle of claim 1, wherein: The main precision bearings are four, which are stacked two by two and form bearing groups, inner spacers and outer spacers are arranged between the bearing groups.

7. The high-precision gear grinding spindle of claim 1, wherein: The tail end of the main bearing seat is connected with an end cover through a locking nut, the end cover and the locking nut are sleeved on the main shaft body respectively.

8. The high-precision gear grinding spindle of claim 1, wherein: The rear cover device comprises a bearing gland screw-connected with the main shaft body, the bearing gland is sleeved with a rear cover assembly, the rear cover assembly is connected with the secondary bearing device through screws; a plurality of quick connectors, power line sockets and signal line sockets are arranged on the rear cover assembly.

9. The high-precision gear grinding spindle of claim 1, wherein: The main bearing device, the shell, the secondary bearing device and the rear cover device are all provided with sealing rings.

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