CN211401541U

CN211401541U - Positioning device for dynamic balance test of hollow gear

Info

Publication number: CN211401541U
Application number: CN201922176078.XU
Authority: CN
Inventors: 万成; 翁贵祥; 王小亮; 刘后祥; 李金超; 谭小龙; 何青松
Original assignee: Chongqing Gearbox Co Ltd
Current assignee: Chongqing Gearbox Co Ltd
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2020-09-01
Anticipated expiration: 2029-12-06

Abstract

The utility model discloses a positioning device for a dynamic balance test of a hollow gear, which comprises a mandrel, wherein the hollow gear can be sleeved on the mandrel and also comprises a positioning disc and a conical plate sleeved on the mandrel; be provided with the annular tang on the positioning disk, the annular tang is a plurality of, and a plurality of annular tangs are arranged along the axial of dabber, and along the direction from the positioning disk to the conical plate, the external diameter of a plurality of annular tangs reduces in proper order, and the annular tang of different diameters and the hollow gear phase-match of different internal diameters, the minor diameter terminal surface of conical plate are relative with the positioning disk, and along the axial of dabber, the different positions of the toper anchor ring face of conical plate and the hollow gear phase-match of different internal diameters. For hollow gears with different inner diameter sizes, the firm positioning can be realized by selecting the annular spigot matched with the hollow gears and the part of the conical plate matched with the annular spigot. The utility model provides a device can fix the hollow gear of multiple internal diameter size to reduce the test cost, simplified the test procedure.

Description

Positioning device for dynamic balance test of hollow gear

Technical Field

The utility model relates to a dynamic balance test field of cavity gear, more specifically say, relate to a positioner is used in cavity gear dynamic balance test.

Background

When the dynamic balance test is performed on the hollow gear, the hollow gear is usually mounted on a matched mandrel, and then a dynamic balance machine is started to perform the dynamic balance test. However, for hollow gears of different sizes, a mandrel matched with the hollow gears needs to be equipped, so that the test cost is increased. In addition, the spindle needs to be replaced when testing hollow gears of different sizes, so that the testing steps become complicated.

Therefore, how to design a positioning device for a dynamic balance test of a hollow gear, which can fix hollow gears with various sizes, thereby reducing the test cost and simplifying the test steps is a key problem to be solved urgently by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a positioner is used in test of cavity gear dynamic balance, the device can fix the cavity gear of multiple size to reduce the test cost, simplify the test procedure. In order to achieve the above object, the utility model provides a following technical scheme:

a positioning device for a dynamic balance test of a hollow gear comprises a mandrel, the hollow gear can be sleeved on the mandrel, and the positioning device further comprises a positioning disc and a conical plate sleeved on the mandrel, wherein the conical plate can be arranged on the mandrel and can be detached from the mandrel, and the positioning disc and the conical plate are coaxial with the mandrel;

be provided with the annular tang on the positioning disk, the annular tang is a plurality of, and is a plurality of the annular tang along the axial of dabber is arranged, and along the follow the positioning disk arrives the direction of conical plate, and is a plurality of the external diameter of annular tang reduces in proper order, the different diameters the annular tang with different internal diameters cavity gear phase-match, the minor diameter terminal surface of conical plate with the positioning disk is relative, along the axial of dabber, the different positions and the different internal diameters of the toper anchor ring of conical plate the cavity gear phase-match.

Preferably, the positioning plate is welded to the mandrel.

Preferably, the positioning plate is welded on the mandrel in a double-sided welding mode.

Preferably, the conical plate is in threaded connection with the mandrel, a first internal thread is arranged on the inner hole wall of the conical plate, and a first external thread matched with the internal thread is arranged on the mandrel.

Preferably, the length of the first external thread is a preset length.

Preferably, the tapered plate is locked in the inner hole of the hollow gear by a locking nut, the locking nut is provided with a second internal thread, and the mandrel is provided with a second external thread matched with the second internal thread.

Preferably, the length of the second external thread is a preset length.

Preferably, the annular spigot is machined by a cutting tool, and the conical surface of the conical plate is machined by a cutting tool.

According to the technical scheme, when the hollow gear is positioned, the hollow gear is firstly sleeved on the mandrel and sleeved on the matched annular spigot, so that the hollow gear and the annular spigot form tight fit. And then sleeving the conical plate on the mandrel from the other side of the hollow gear, pushing the conical plate into an inner hole of the hollow gear until the conical plate is tightly matched with the hollow gear, and then locking the conical plate on the mandrel. Because the two sides of the hollow gear respectively form tight fit with the positioning disc and the conical plate, the hollow gear is firmly positioned, and the testing precision can be ensured. In addition, for hollow gears with different inner diameter sizes, the positions of the annular spigot matched with the hollow gears and the conical plate matched with the hollow gears can be selected to realize firm positioning. The utility model provides a device can fix the hollow gear of multiple internal diameter size to reduce the test cost, simplified the test procedure.

Drawings

In order to illustrate the embodiments of the present invention more clearly, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained without inventive efforts.

Fig. 1 is a schematic structural view of a positioning device for a dynamic balance test of a hollow gear according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of the mandrel and the positioning plate according to an embodiment of the present invention.

Wherein, 1 is the dabber, 2 is the positioning disk, 3 is the toper board, 4 is lock nut, 5 is hollow gear, 6 is the annular tang.

Detailed Description

The utility model discloses a positioner is used in test of cavity gear dynamic balance, the device can fix the cavity gear of multiple size to reduce the test cost, simplify the test procedure.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

In an embodiment of the present invention, the positioning device for the dynamic balance test of the hollow gear 5 comprises: mandrel 1, positioning disc 2 and conical plate 3. Wherein, hollow gear 5 can be nested on dabber 1. The positioning disc 2 is sleeved on the mandrel 1 and is connected with the mandrel 1. The tapered plate 3 can be fitted onto the mandrel 1 in a connected relationship with the mandrel 1 and can be removed from the mandrel 1. The positioning disc 2 is provided with an annular spigot 6. The annular seam allowance 6 is multiple, and the annular seam allowance 6 is arranged along the axial direction of the mandrel 1. The outer diameter of the plurality of annular spigots 6 decreases in sequence in the direction from the positioning plate 2 to the conical plate 3. The different diameter ring spigots 6 match the different internal diameter hollow gears 5. The small diameter end face of the tapered plate 3 is opposed to the positioning plate 2. Or the smaller diameter end face of the conical plate 3 is located closer to the positioning disk 2 than the larger diameter end face. Along the axial direction of the mandrel 1, different positions of the conical ring surface of the conical plate 3 are matched with hollow gears 5 with different inner diameters.

When the hollow gear 5 is positioned, firstly, the hollow gear 5 is sleeved on the mandrel 1, and the hollow gear 5 is sleeved on the matched annular spigot 6, so that the hollow gear 5 and the annular spigot 6 form tight fit. Then, the tapered plate 3 is sleeved on the mandrel 1 from the other side of the hollow gear 5, the tapered plate 3 is pushed into an inner hole of the hollow gear 5 until the tapered plate forms a tight fit with the hollow gear 5, and then the tapered plate 3 is locked on the mandrel 1. Since the two sides of the hollow gear 5 respectively form a tight fit with the positioning disc 2 and the conical plate 3, the hollow gear 5 is firmly positioned, and the testing precision can be ensured. In addition, for hollow gears 5 with different inner diameter sizes, the annular spigot 6 matched with the hollow gears and the part of the conical plate 3 matched with the hollow gears can be selected to realize firm positioning. The utility model provides a device can fix the hollow gear 5 of multiple internal diameter size to reduce the test cost, simplified the test procedure.

Further, it is preferable to weld the positioning plate 2 to the mandrel 1. The welding processing mode is convenient to implement, and the firmness of the connection of the positioning disc 2 and the mandrel 1 can be ensured. Besides, the positioning plate 2 can be connected with the mandrel 1 through bolts or screws or buckles. The connection relationship between the positioning plate 2 and the mandrel 1 is not limited, and the connection between the positioning plate 2 and the mandrel 1 is within the protection scope of the present disclosure as long as the connection can be achieved. If the positioning disc 2 is welded on the mandrel 1, in the installation process, firstly, the hollow gear 5 is sleeved on the mandrel 1, the hollow gear 5 is tightly matched with the annular spigot 6 matched with the positioning disc 2, and then, the conical plate 3 is sleeved on the hollow gear 5 to position the other side of the hollow gear 5.

Further, the positioning plate 2 is welded on the mandrel 1 in a double-sided welding mode. The double-sided welding has the advantages of good forming, high welding seam quality and the like, and can effectively ensure the firmness of the connection of the positioning disc 2 and the mandrel 1.

Further, the connection relationship of the tapered plate 3 and the mandrel 1 is as follows: conical plate 3 and 1 threaded connection of dabber, be provided with first internal thread on the inner hole wall of conical plate 3. The mandrel 1 is provided with a first external thread matched with the first internal thread. After the hollow gear 5 is sleeved on the mandrel 1, one side of the hollow gear 5 is pressed on the matched annular spigot 6, then the conical plate 3 is installed, and the conical plate 3 is screwed until the hollow gear 5 and the matched position on the conical surface of the conical plate 3 form a tight fit.

Further, the first external thread is a section of thread on the mandrel 1, and the length of the first external thread in the axial direction of the mandrel 1 is set so as to enable different parts of the conical surface of the conical plate 3 to be in tight fit with the hollow gears 5 with different inner diameter sizes. The first external thread is only a section of the thread on the spindle 1. Along the direction from the positioning disc 2 to the conical plate 3, the part of the mandrel 1 from one end of the first external thread far away from the positioning disc 2 to the end part of the mandrel 1 is in clearance fit with the conical plate 3. So set up, can make things convenient for tapered plate 3's installation and dismantlement.

Further, the connection relationship of the tapered plate 3 and the mandrel 1 can also be as follows: tapered plate 3 is locked in the inner bore of hollow gear 5 by lock nut 4. The lock nut 4 has a second internal thread. And a second external thread matched with the second internal thread is arranged on the mandrel 1. The lock nut 4 is located on the side of the large end face of the tapered plate 3. When the lock nut 4 is screwed, the lock nut 4 pushes the tapered plate 3 to move toward the inside of the hollow gear 5 until the tapered plate 3 and the hollow gear 5 form a tight fit.

Further, the length of the second external thread in the axial direction of the mandrel 1 is a predetermined length, and is only one thread on the mandrel 1. The design criteria of the second external thread are similar to the design criteria of the first external thread in principle, and all the design criteria are based on the fact that different parts of the conical surface of the conical plate 3 can be tightly matched with the hollow gears 5 with different inner diameter sizes. The second external thread is only a section of the thread on the mandrel 1. Along the direction from the positioning disc 2 to the conical plate 3, the part of the mandrel 1 from the end of the second external thread far away from the positioning disc 2 to the end of the mandrel 1 is in clearance fit with the locking nut 4. So set up, can make things convenient for lock nut 4's installation and dismantlement.

In the present invention, the annular seam allowance 6 on the positioning plate 2 has a higher coaxiality with the inner hole of the hollow gear 5. The conical surface of the conical plate 3 is to have a high degree of coaxiality with the corresponding hollow gear 5. Thus, in one embodiment of the present invention, the cutting tool is selected to machine the annular spigot 6 and the tapered surface of the tapered plate 3.

After the hollow gear 5 is positioned by the positioning device, the positioning device is placed on a dynamic balancing machine for testing. The dynamic balancing machine can automatically find the weight removing position of the hollow gear 5, then calculate the weight removing mass according to a weight removing formula, and finally remove the weight of the hollow gear 5.

Finally, it should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A positioning device for a dynamic balance test of a hollow gear comprises a mandrel, wherein the hollow gear can be sleeved on the mandrel, and the positioning device is characterized by further comprising a positioning disc and a conical plate sleeved on the mandrel, wherein the conical plate can be detached from the mandrel, and the positioning disc and the conical plate are coaxial with the mandrel;

2. The positioning device for testing the dynamic balance of a hollow gear according to claim 1, wherein the positioning plate is welded on the mandrel.

3. The positioning device for testing the dynamic balance of the hollow gear according to claim 2, wherein the positioning plate is welded to the mandrel by double-sided welding.

4. The positioning device for the dynamic balance test of the hollow gear according to claim 1, wherein the tapered plate is in threaded connection with the mandrel, a first internal thread is provided on an inner hole wall of the tapered plate, and a first external thread matched with the first internal thread is provided on the mandrel.

5. The positioning device for the dynamic balance test of the hollow gear according to claim 4, wherein the length of the first external thread in the axial direction of the mandrel is a predetermined length.

6. The positioning device for the dynamic balance test of the hollow gear according to claim 1, wherein the tapered plate is locked in the inner hole of the hollow gear by a locking nut, the locking nut has a second internal thread, and the mandrel is provided with a second external thread matched with the second internal thread.

7. The positioning device for the dynamic balance test of the hollow gear according to claim 6, wherein the length of the second external thread in the axial direction of the mandrel is a predetermined length.

8. The positioning device for the dynamic balance test of the hollow gear according to claim 1, wherein the annular spigot is machined by a cutting tool, and the tapered surface of the tapered plate is machined by a cutting tool.