Internal tooth grinding spindle

Abstract

The utility model discloses an internal tooth grinding main shaft which comprises a shell and a driving device arranged above the shell, a shaft core vertically penetrating through the bottom of the shell, an opening formed in the lower end of the shell, mounting covers arranged on the two sides of the opening respectively, a grinding wheel arranged in the middle of the shaft core in a sleeved mode, and a transmission part arranged between the grinding wheel and the shaft core. The transmission part comprises a plurality of bearings arranged in the axial direction of the shaft core and a shaft sleeve arranged on the outer sides of the bearings, a transmission part is arranged at the output end of the driving device, the other end of the transmission part is connected with the shaft sleeve, and the driving device can drive the grinding wheel to rotate through the shaft sleeve, so that the radial load bearing capacity of the shaft core is improved, and the shaft core can be fixed; and the shaft core part is taken out from the opening by dismounting the mounting cover, so that the operation of replacing the grinding wheel is completed, the bearing does not need to be dismounted, and the precision of subsequent machining operation is further ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical grinding, and more specifically relates to an internal gear grinding spindle. Background Art

[0002] Planetary reducers are widely used industrial products that can reduce the speed of motors while increasing output torque. They can be used as supporting components in industries such as lifting, excavation, transportation, and construction. They have become pillar components for promoting unmanned production and industrial automation. Therefore, high-precision production of internal gear parts used in planetary reducers is required.

[0003] However, the internal gear grinding spindle currently used to produce internal gear parts needs to remove the bearing when replacing the grinding wheel, which is not only cumbersome and inconvenient to install, but also leads to a decrease in subsequent processing accuracy. Utility Model Content

[0004] The main purpose of the utility model is to provide an internal gear grinding spindle which is convenient to install when replacing a grinding wheel and can ensure machining accuracy.

[0005] In order to achieve the above object, the technical solution of the utility model is:

[0006] An internal gear grinding spindle comprises a shell and a driving device arranged above the shell, an axis core is arranged vertically through the bottom of the shell, an opening is arranged at the lower end of the shell, mounting covers for fixing the axis core are respectively arranged on both sides of the opening, the mounting cover and the shell are detachably connected, a grinding wheel is sleeved on the middle part of the axis core, a transmission part is arranged between the grinding wheel and the axis core, the transmission part comprises a plurality of bearings arranged along the axial direction of the axis core and shaft sleeves arranged on the outside of the plurality of bearings, a transmission member is arranged at the output end of the driving device, the other end of the transmission member is connected to the shaft sleeve, and the driving device can drive the grinding wheel to rotate through the shaft sleeve.

[0007] In a specific embodiment of the present invention, a positioning piece is provided at one end of the shaft core, and the positioning piece is threadedly connected to the shaft core.

[0008] In a specific embodiment of the utility model, limiting grooves are provided at corresponding positions of the shell and the positioning member, and limiting steps are provided at corresponding positions of the shaft core and the inner wall of the shell. The limiting grooves and the limiting steps can limit the axial displacement of the shaft core.

[0009] In a specific embodiment of the present invention, a locking piece is further provided on the shaft core, and the locking piece is located between the transmission part and the inner wall of the shell.

[0010] In a specific embodiment of the present invention, the transmission part further comprises a bearing flange, and the bearing flange is located at one end of the shaft sleeve.

[0011] In a specific embodiment of the present invention, the shaft sleeve is provided with a limiting protrusion between the grinding wheel and the transmission member.

[0012] In a specific embodiment of the utility model, a grinding wheel pressure plate is correspondingly provided on one side of the grinding wheel.

[0013] One of the above technical solutions of the utility model has at least one of the following advantages or beneficial effects:

[0014] The utility model increases the radial load bearing capacity of the shaft core by vertically passing the shaft core through the bottom of the shell, arranging the grinding wheel in the middle of the shaft core, and arranging the bearing along the axial direction of the shaft core; further, by arranging the shaft sleeve on the outer side of the bearing, the driving device can drive the grinding wheel to rotate through the transmission member, and by arranging the installation covers detachably connected to the shell on both sides of the opening, not only can the shaft core be fixed, but also the shaft core part can be taken out from the opening by removing the installation cover, thereby completing the operation of replacing the grinding wheel without removing the bearing, thereby further ensuring the accuracy of subsequent processing operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments;

[0016] Attached Figure 1 This is a processing schematic diagram of an embodiment of the utility model;

[0017] Attached Figure 2 An exploded view of an embodiment of the utility model;

[0018] Attached Figure 3 A top view of an embodiment of the utility model;

[0019] Attached Figure 4 This is a cross-sectional view taken along direction BB of an embodiment of the present invention. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0021] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more features.

[0024] In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the term "connection" should be understood in a broad sense. For example, it can be a fixed connection or a movable connection, a detachable connection or a non-detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be internal connection between two elements, indirect connection, or an interactive relationship between two elements.

[0025] The following disclosure provides many different embodiments or examples for implementing different solutions of the present invention.

[0026] See attached Figure 1 To Attachment Figure 4 As shown, an internal gear grinding spindle includes a shell 1, a driving device and a shaft core 2, the shaft core 2 is arranged vertically through the bottom of the shell 1, a cavity is provided in the shell 1, and an opening is provided at the lower end of the shell 1, and mounting covers 12 for fixing the shaft core 2 are respectively provided on both sides of the opening, and a groove for clamping the shaft core 2 is provided on the upper end surface of the mounting cover 12, and mounting holes for threaded connection with the shell 1 are respectively provided on both sides of the groove, so that when replacing the grinding wheel, there is no need to remove the bearing, and the shaft core 2 can be partially taken out from the opening after removing the mounting cover 12, thereby completing the replacement operation.

[0027] In one embodiment of the utility model, a grinding wheel 3 is sleeved on the middle part of the shaft core 2, and a grinding wheel pressure plate 9 is correspondingly arranged on one side of the grinding wheel 3. The grinding wheel 3 is installed on the shaft core 2 for internal gear grinding. The grinding wheel 3 is located in the cavity. A transmission part 4 is provided between the grinding wheel 3 and the shaft core 2. The transmission part 4 includes four bearings 41 arranged along the axial direction of the shaft core 2, a shaft sleeve 42 arranged on the outside of the bearing 41, and a bearing flange 43, wherein the bearing flange 43 is located at one end of the shaft sleeve 42, and the bearing 41 is arranged along the axial direction of the shaft core 2, thereby increasing the radial load bearing capacity of the shaft core 2.

[0028] In one embodiment of the utility model, by arranging the driving device above the shell 1, the driving device can be a motor, and the output end of the driving device is provided with a transmission member 5, and the other end of the transmission member 5 is sleeved on the outside of the shaft sleeve 42 to achieve connection with the shaft sleeve 42, wherein the transmission member 5 is not limited to a belt structure and can be a gear structure or a liquid motor structure, and then the driving device can drive the grinding wheel 3 to rotate through the shaft sleeve 42, thereby ensuring that the grinding wheel 3 is in a good stress state and can withstand a larger processing force to meet efficient production.

[0029] In one embodiment of the utility model, a positioning piece 6 is provided at one end of the shaft core 2, and the positioning piece 6 and the shaft core 2 are threadedly connected. A limiting groove is provided at the corresponding position of the shell 1 and the positioning piece 6, and a limiting step 23 is provided at the corresponding position of the shaft core 2 and the inner wall of the shell 1. The limiting groove and the limiting step 23 can limit the axial displacement of the shaft core 2.

[0030] The internal gear grinding spindle is constructed by assembling the transmission part 4 together with the grinding wheel 3 onto the shaft core 2 as a whole, and then positioning and installing them with the positioning member 6. The transmission member 5 transmits power to rotate the grinding wheel 3, and then processes the internal teeth. This realizes a fixed shaft core structure in which the shaft core 2 is fixed and the shaft sleeve 42 drives the grinding wheel 3 to rotate. In addition, there is no need to destroy the structure of the shaft core 2 when replacing the grinding wheel 3. This not only facilitates installation, but also ensures the accuracy of subsequent processing operations.

[0031] In one embodiment of the utility model, a locking piece 7 is also provided on the shaft core 2, and the locking piece 7 is arranged between the transmission part 4 and the inner wall of the shell 1, so that the structure of fixing the shaft core 2 has better rigidity during the processing of the internal tooth parts, thereby obtaining higher processing accuracy, and the overall structure of fixing the shaft core 2 can make the use and maintenance process simpler, and there is no need to disassemble the bearing 41 when replacing the grinding wheel 3, which is more conducive to accuracy assurance.

[0032] In one embodiment of the utility model, the sleeve 42 is provided with a limiting protrusion 8 between the grinding wheel 3 and the transmission member 5. The limiting protrusion 8 can separate the transmission part 4 and the transmission member 5, thereby ensuring the accuracy of subsequent processing operations.

[0033] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An internal gear grinding spindle, comprising a housing (1) and a driving device arranged above the housing (1), characterized in that: A shaft core (2) is vertically passed through the bottom of the housing (1), an opening is provided at the lower end of the housing (1), and mounting covers (12) for fixing the shaft core (2) are respectively provided on both sides of the opening, and the mounting cover (12) and the housing (1) are detachably connected, a grinding wheel (3) is sleeved on the middle of the shaft core (2), a transmission part (4) is provided between the grinding wheel (3) and the shaft core (2), and the transmission part (4) comprises a plurality of bearings (41) arranged along the axial direction of the shaft core (2) and shaft sleeves (42) arranged outside the plurality of bearings (41), a transmission member (5) is provided at the output end of the driving device, and the other end of the transmission member (5) is connected to the shaft sleeve (42), and the driving device can drive the grinding wheel (3) to rotate through the shaft sleeve (42).

2. The internal gear grinding spindle according to claim 1, characterized in that: A positioning piece (6) is provided at one end of the shaft core (2), and the positioning piece (6) is threadedly connected to the shaft core (2).

3. The internal gear grinding spindle according to claim 2, characterized in that: The housing (1) and the positioning member (6) are provided with limiting grooves at corresponding positions, and the shaft core (2) and the inner wall of the housing (1) are provided with limiting steps (23) at corresponding positions. The limiting grooves and the limiting steps (23) can limit the axial displacement of the shaft core (2).

4. The internal gear grinding spindle according to claim 1, characterized in that: A locking piece (7) is also provided on the shaft core (2), and the locking piece (7) is located between the transmission part (4) and the inner wall of the housing (1).

5. The internal gear grinding spindle according to claim 1, characterized in that: The transmission part (4) further comprises a bearing flange (43), wherein the bearing flange (43) is located at one end of the shaft sleeve (42).

6. The internal gear grinding spindle according to claim 1, characterized in that: The shaft sleeve (42) is provided with a limiting protrusion (8) between the grinding wheel (3) and the transmission member (5).

7. The internal gear grinding spindle according to claim 6, characterized in that: A grinding wheel pressing plate (9) is correspondingly provided on one side of the grinding wheel (3).

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