Shaft gear tooth part end face chamfering device

Abstract

The utility model relates to the technical field of gear chamfering, in particular to a shaft gear tooth portion end face chamfering device which comprises a sleeve, a sliding barrel is connected to the inner wall of the sleeve in a sliding mode, a shaft rod is arranged on the inner wall of the sliding barrel, a gear is fixedly arranged on the outer wall of the shaft rod in a sleeved mode, and an inner conical surface is arranged at an opening of the inner wall of the sleeve. An outer conical surface is connected to the position, corresponding to the inner conical surface, of the outer wall of the sliding barrel, a narrow groove is formed in the position, located on the outer conical surface, of the sliding barrel, and the inner conical surface makes contact with the outer conical surface when the sliding barrel slides towards the deep position of the sleeve by inserting the shaft rod connected with the gear into the sliding barrel. In the continuous sliding-in process of the sliding barrel, due to the fact that the inner wall of the inner conical surface is gradually narrowed, the outer conical surface can be extruded by the inner conical surface, the outer conical surface shrinks to clamp a shaft rod in a forming mode, due to clamping formed through extrusion of the inner conical surface, the clamping pair is automatically centered, the shaft center line is located on the same straight line, and a gear is conveniently fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of gear chamfering, in particular to a device for chamfering the end face of a shaft gear tooth portion. Background Art

[0002] In the existing gear processing process, the workpiece needs to be fixed on a gear chamfering machine, and the end face of the workpiece gear needs to be chamfered and deburred by the tool on the machine tool to ensure that the gear meshes normally without producing abnormal noise or other defects that affect performance. Chamfering is a process of removing the edges and corners of the gear to eliminate the edges and corners.

[0003] Prior art, such as publication number CN209998494U, provides a gear chamfering fixture, comprising a flange and a pressure cover, wherein the pressure cover is fixedly connected to the circular ring of the flange, a first through hole is arranged in the middle of the pressure cover, a convex portion of the flange is arranged in the first through hole and extends out of the first through hole; it also comprises a support plate, wherein the support plate is arranged below the pressure cover, and a space for placing the gear is formed between the support plate and the pressure cover. When the gear is installed in the present fixture, the two end faces of the gear are tightly fitted with the pressure cover and the support plate respectively, thereby reducing the asymmetry of the gear relative to the center axis of the fixture after installation due to manual operation of bolts to fix the gear, thereby improving the accuracy of the gear installed on the fixture, and improving the stability of the gear after installation.

[0004] The gear is pressed on the support plate by the pressure cover, and the convex part of the flange cooperates with the hole of the gear to position the gear, which reduces the asymmetry of the gear relative to the center axis of the fixture after installation due to manual bolt fixing of the gear, improves the accuracy of the gear installation on the fixture, improves the stability of the gear after installation, improves the effect of the chamfering equipment on the gear chamfering, improves the installation efficiency of the gear, and saves the installation and disassembly time of the gear. However, since the convex part needs to fully fit the inner hole of the gear, it can play a role in positioning the tooth. If there is a gap between the convex part and the inner hole of the gear, it cannot play a good role in positioning the gear, resulting in a decrease in processing accuracy. In view of this, we propose a device for chamfering the end face of the tooth part of a shaft gear. Utility Model Content

[0005] The utility model aims to provide a device for chamfering the end faces of shaft gear teeth, which solves the problem of avoiding convex positioning resulting in a smaller range of gear models that the overall fixture can adapt to.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The gear wheel of the embodiment of the present invention is a gear wheel that is fixedly mounted on the outer wall of the gear wheel, and the gear wheel is fixedly mounted on the outer wall of the gear wheel. The gear wheel is fixedly mounted on the outer wall of the gear wheel, and the gear wheel is fixedly mounted on the outer wall of the gear wheel. The gear wheel is fixedly mounted on the outer wall of the gear wheel, and the gear wheel is fixedly mounted on the outer wall of the gear wheel. The gear wheel is fixedly mounted on the outer wall of the gear wheel, and the gear wheel is fixedly mounted on the outer wall of the gear wheel. The gear wheel is fixedly mounted on the outer wall of the gear wheel, and the gear wheel is fixedly mounted on the outer wall of the gear wheel. The gear wheel is fixedly mounted on the outer wall of the gear wheel, and the gear wheel is fixedly mounted on the outer wall of the gear wheel. The gear wheel is fixedly mounted on the outer wall of the gear wheel, and the gear wheel is fixedly mounted on the outer wall of the gear wheel.

[0008] Preferably, the inclination angle of the outer cone surface is consistent with the inclination angle of the inner cone surface. By setting the inclination angles of the outer cone surface and the inner cone surface to be consistent, the contact area when the outer cone surface contacts the outer cone surface is increased to improve the stability during extrusion.

[0009] Preferably, when the outer conical surface is in contact with and fits with the inner conical surface, the end face of the slide does not contact with the end face of the inner wall of the sleeve. By setting the inner hole depth of the slide to exceed the insertion length of the shaft rod, when the shaft rod is inserted, the surface of the gear can fit with the end face of the sleeve. The outer conical surface and the sleeve are limited in multiple directions to ensure that the fixed gear and the sleeve are in a coaxial state, and the end face of the sleeve that fits with the sleeve can provide support for the gear, so as to improve the stability of the gear during processing and ensure its processing quality.

[0010] Preferably, a through hole is provided on the end face of the sleeve, the back of the slide is connected to a connecting rod, the back of the connecting rod is connected to a threaded head, an external hydraulic cylinder is connected via the threaded head, and the connecting rod is driven by the hydraulic cylinder to pull the slide into the hole of the sleeve.

[0011] Preferably, the outer wall of the sleeve is connected to a flange, and the surface of the flange is provided with connecting holes for inserting bolts. The sleeve is conveniently fixed by inserting the bolts into the connecting holes on the flange. By calibrating the position of the sleeve on the operating table in advance, the accuracy of clamping after the subsequent slide is inserted can be guaranteed.

[0012] Preferably, the end surface of the flange and the end surface of the sleeve are arranged horizontally, so that after the end surface of the slide cylinder is in contact with the gear, good support can be provided for the gear to ensure stability during processing.

[0013] Preferably, there are six narrow grooves evenly distributed at sixty degrees, and the narrow grooves completely penetrate the outer wall of the slide tube at the position of the outer cone surface. By providing the narrow grooves, the outer wall of the slide tube at the position of the outer cone surface is divided into six groups of independent clamping arc plates to facilitate clamping of the shaft rod.

[0014] By means of the above technical solution, the utility model provides a device for chamfering the end face of a shaft gear tooth portion, which has at least the following beneficial effects:

[0015] 1. The utility model inserts the shaft connected to the gear into the slide tube so that when the slide tube slides deep into the sleeve, the inner conical surface will contact the outer conical surface. During the continuous sliding of the slide tube, the inner wall of the inner conical surface gradually narrows and the outer conical surface will be squeezed by the inner conical surface, so that the outer conical surface shrinks to clamp the shaft. Moreover, since the clamping is formed by squeezing the inner conical surface, the clamping pair is automatically centered so that the center line of the shaft is in a straight line, which is convenient for fixing the gear and facilitating processing.

[0016] Second, the utility model forms a clamping space with a certain shrinkage range because the outer cone surface is divided by narrow grooves, so as to increase the range of applicable workpiece models and facilitate the disassembly and assembly of gears. The structure is simple and easy to manufacture, which is conducive to popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application:

[0018] Figure 1 It is a partial cross-sectional view of the utility model;

[0019] Figure 2 It is a partial cross-sectional view of the central shaft and gear of the utility model;

[0020] Figure 3 It is a partial cross-sectional view of the slide cylinder in the utility model;

[0021] Figure 4 It is a partial cross-sectional view of the sleeve in the utility model.

[0022] In the figure: 1, sleeve; 11, flange; 12, connecting hole; 13, through hole; 14, inner cone; 2, slide; 21, outer cone; 211, narrow groove; 22, connecting rod; 221, threaded head; 3, shaft; 31, gear. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example 1

[0025] A device for chamfering the end face of a shaft gear tooth portion, such as Figure 1 - Figure 4 As shown, it includes a sleeve 1, the inner wall of the sleeve 1 is slidably connected with a slide 2, the inner wall of the slide 2 is provided with a shaft 3, the outer wall of the shaft 3 is fixedly sleeved with a gear 31, an inner conical surface 14 is provided at the opening of the inner wall of the sleeve 1, the outer wall of the slide 2 is connected with an outer conical surface 21 at a position corresponding to the inner conical surface 14, and the slide 2 is provided with a narrow groove 211 at the position of the outer conical surface 21, and the shaft 3 connected with the gear 31 is inserted into the inner part of the slide 2, so that when the slide 2 slides deep into the sleeve 1, the inner conical surface 21 is The outer conical surface 14 will contact the outer conical surface 21. During the continuous sliding of the slide 2, the inner wall of the inner conical surface 14 gradually narrows, and the outer conical surface 21 will be squeezed by the inner conical surface 14, so that the outer conical surface 21 shrinks to clamp the shaft 3. Since the clamping is formed by the squeezing of the inner conical surface 14, the clamping is automatically centered, so that the shaft center line is in a straight line, so that the gear 31 can be fixed and processed conveniently. In addition, since the outer conical surface 21 is divided by the narrow groove 211, The outer cone 21 and the inner cone 14 are provided with a plurality of conical surfaces 21 and 24, respectively, which ...

[0026] In this embodiment, by inserting the shaft rod 3 connected to the gear 31 into the inner part of the slide cylinder 2, when the slide cylinder 2 slides deep into the sleeve 1, the inner cone surface 14 and the outer cone surface 21 will contact each other. During the continuous sliding of the slide cylinder 2, the inner wall of the inner cone surface 14 gradually narrows and the outer cone surface 21 will be squeezed by the inner cone surface 14, so that the outer cone surface 21 shrinks to clamp the shaft rod 3. Moreover, since the clamping is formed by the squeezing of the inner cone surface 14, the clamping is automatically centered so that the center line of the shaft is in a straight line, so as to facilitate the fixing of the gear 31 and facilitate the processing. When the shaft rod 3 is inserted, the surface of the gear 31 fits the end face of the sleeve 1, and the outer cone surface 21 and the end face of the sleeve 1 are limited in multiple directions to ensure that the fixed gear 31 and the sleeve 1 are in a coaxial state, and the end face fitting the sleeve 1 can provide support for the gear 31 to improve the stability of the gear 31 during processing and ensure its processing quality.

[0027] Example 2

[0028] like Figure 1 , Figure 3 , Figure 4 As shown, a through hole 13 is provided on the end face of the sleeve 1, a connecting rod 22 is connected to the back of the slide 2, a threaded head 221 is connected to the back of the connecting rod 22, an external hydraulic cylinder is connected through the threaded head 221, and the connecting rod 22 is driven by the hydraulic cylinder to pull the slide 2 to be inserted into the hole of the sleeve 1, and a flange 11 is connected to the outer wall of the sleeve 1, and a connecting hole 12 for inserting a bolt is provided on the surface of the flange 11, and the sleeve 1 is conveniently fixed by inserting a bolt into the connecting hole 12 on the flange 11, and the position of the sleeve 1 on the operating table is advanced After calibration, the accuracy of clamping after the subsequent slide 2 is inserted can be guaranteed. The end face of the flange 11 and the end face of the sleeve 1 are set horizontally, so that after the end face of the slide 2 is in contact with the gear 31, it can provide good support for the gear 31 to ensure stability during processing. There are six narrow grooves 211, which are evenly distributed at sixty degrees, and the narrow grooves 211 completely penetrate the outer wall of the slide 2 at the outer conical surface 21. By providing the narrow grooves 211, the outer wall of the slide 2 at the outer conical surface 21 is divided into six groups of independent clamping arc plates to facilitate clamping of the shaft 3.

[0029] In this embodiment, the sleeve 1 is conveniently fixed by inserting bolts into the connecting hole 12 on the flange 11. By calibrating the position of the sleeve 1 on the operating table in advance, the accuracy of clamping after the subsequent insertion of the slide 2 can be ensured. The external hydraulic cylinder is connected through the threaded head 221, and the connecting rod 22 is driven by the hydraulic cylinder to pull the slide 2 into the hole of the sleeve 1.

[0030] When the utility model is used, a device for chamfering the end face of a shaft gear tooth portion is used, by inserting bolts into the connecting hole 12 on the flange 11, so as to facilitate the fixing of the sleeve 1. By calibrating the position of the sleeve 1 on the operating table in advance, the accuracy of clamping after the subsequent slide 2 is inserted can be guaranteed. The external hydraulic cylinder is connected through the threaded head 221, and the connecting rod 22 is driven by the hydraulic cylinder to pull the slide 2 to be inserted into the hole of the sleeve 1. By inserting the shaft rod 3 of the connecting gear 31 into the slide 2, when the slide 2 slides deep into the sleeve 1, the inner conical surface 14 and the outer conical surface 21 will contact each other. During the continuous sliding of the slide 2, the outer conical surface 21 is pressed against the inner conical surface. The inner wall of 14 gradually becomes narrower and will be squeezed by the inner conical surface 14, so that the outer conical surface 21 shrinks to clamp the shaft rod 3. Moreover, since the clamping is formed by squeezing the inner conical surface 14, the clamping is automatically centered so that the center line of the shaft is in a straight line, so as to facilitate the fixation of the gear 31 and facilitate the processing. When the shaft rod 3 is inserted, the surface of the gear 31 fits the end face of the sleeve 1, and the outer conical surface 21 and the end face of the sleeve 1 are limited in multiple directions to ensure that the fixed gear 31 and the sleeve 1 are in a coaxial state, and the end face of the sleeve 1 can provide support for the gear 31, so as to improve the stability of the gear 31 during processing and ensure its processing quality.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art 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 appended claims and their equivalents.

Claims

1. A device for chamfering the end face of a shaft gear tooth, comprising a sleeve (1), characterized in that: The inner wall of the sleeve (1) is slidably connected to a slide cylinder (2), the inner wall of the slide cylinder (2) is provided with a shaft (3), the outer wall of the shaft (3) is fixedly sleeved with a gear (31), an inner conical surface (14) is provided at the opening of the inner wall of the sleeve (1), an outer conical surface (21) is connected to the outer wall of the slide cylinder (2) at a position corresponding to the inner conical surface (14), and a narrow groove (211) is provided on the slide cylinder (2) at the position of the outer conical surface (21).

2. The device for chamfering the end face of a shaft gear tooth according to claim 1, characterized in that: The cone surface inclination angle of the outer cone surface (21) is consistent with the cone surface inclination angle of the inner cone surface (14).

3. The device for chamfering the end face of a shaft gear tooth according to claim 1, characterized in that: When the outer conical surface (21) is in contact with the inner conical surface (14), the end surface of the slide cylinder (2) does not contact the end surface of the inner wall of the sleeve (1).

4. The device for chamfering the end face of a shaft gear tooth according to claim 1, characterized in that: The end surface of the sleeve (1) is provided with a through hole (13), the back surface of the slide cylinder (2) is connected to a connecting rod (22), and the back surface of the connecting rod (22) is connected to a threaded head (221).

5. The device for chamfering the end face of a shaft gear tooth according to claim 1, characterized in that: The outer wall of the sleeve (1) is connected to a flange (11), and a connection hole (12) for inserting a bolt is provided on the surface of the flange (11).

6. The device for chamfering the end face of a shaft gear tooth according to claim 5, characterized in that: The end surface of the flange (11) and the end surface of the sleeve (1) are arranged horizontally.

7. The device for chamfering the end face of a shaft gear tooth according to claim 1, characterized in that: There are six narrow grooves (211) which are evenly distributed at 60 degrees, and the narrow grooves (211) completely penetrate the outer wall of the slide tube (2) and are located at the outer conical surface (21).

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