Grinding wheel head for numerically controlled form grinding of gear ring inner tooth

Abstract

This application discloses a grinding wheel head for CNC forming grinding of internal gear rings. The grinding wheel head is connected to a grinding machine via a drive shaft and includes: a grinding wheel; a grinding surface, on which the grinding wheel grinds the internal gear teeth; a mounting groove, on one side of the grinding wheel; a connecting plate, which is installed in the mounting groove and connected to the grinding wheel; a cylindrical body, connected to the connecting plate; and multiple transmission grooves, spaced apart on the inner circumferential surface of the cylindrical body, which are adapted to engage with corresponding protrusions on the drive shaft to receive torque from the drive shaft. The grinding wheel and the connecting plate are connected to form the grinding wheel head. The engagement of the transmission grooves and the protrusions ensures that the torque from the drive shaft is stably transmitted to the grinding wheel, maintaining a stable grinding wheel speed. Two flat flanges are mounted on the drive shaft to clamp the grinding wheel head. Maintaining a stable grinding wheel speed results in moderate grinding force, reduces the likelihood of vibration marks on the workpiece surface, and achieves high machining accuracy.

Description

Technical Field

[0001] This application relates to the field of grinding wheel technology, and in particular to grinding wheel heads for CNC forming grinding of internal gear rings. Background Technology

[0002] During the grinding process of the internal teeth of a gear, a high-speed rotating grinding wheel needs to be inserted into the internal gear ring to grind the internal teeth of the gear through the grinding surface of the grinding wheel.

[0003] In the existing technology, the grinding wheel is clamped onto the drive shaft by a flat flange. However, because the grinding wheel rotates at a very high speed, the power transmission between the flat flange and the grinding wheel is unstable, resulting in unstable grinding wheel speed, which in turn affects the machining accuracy and the precision of the machine tool.

[0004] Therefore, it is necessary to propose a grinding wheel head for CNC forming grinding of internal gear rings, and improve the stability of the grinding wheel speed, which has become an important technical problem that needs to be solved urgently. Utility Model Content

[0005] This application provides a grinding wheel head for CNC forming grinding of internal gear rings, aiming to solve the problem in the prior art where the power transmission between the flat flange and the grinding wheel is unstable, resulting in unstable grinding wheel speed, which in turn affects the machining accuracy and machine tool precision.

[0006] To achieve the above objectives, this application proposes a grinding wheel head for CNC forming grinding of internal gear rings. The grinding wheel head is connected to a grinding machine via a drive shaft and includes: a grinding wheel; a grinding surface, on which the grinding wheel grinds the internal gear teeth; a mounting groove, on one side of the grinding wheel; a connecting plate, which is installed in the mounting groove and connected to the grinding wheel; a cylindrical body, on which the connecting plate is connected; and multiple transmission grooves, which are spaced apart on the inner circumferential surface of the cylindrical body and are adapted to engage with corresponding protrusions on the drive shaft to receive torque from the drive shaft.

[0007] In some embodiments, the system further includes: a connecting through hole, wherein both the connecting disc and the grinding wheel are provided with connecting through holes; a bolt, wherein the bolt passes through the connecting through holes on the connecting disc and the grinding wheel; and a clamping nut, wherein a clamping nut is screwed onto the bolt and the clamping nut abuts against the grinding wheel.

[0008] In some embodiments, the device further includes a gasket, wherein a gasket is disposed between the clamping nut and the grinding wheel.

[0009] In some embodiments, it further includes: a limiting surface, wherein a limiting surface is provided inside the cylindrical portion.

[0010] In some embodiments, it further includes: a first abutting end, wherein the first abutting end is provided on the side of the cylinder portion away from the connecting plate.

[0011] In some embodiments, it also includes: The second abutment end is provided on the other side of the grinding wheel.

[0012] This application provides a grinding wheel head for CNC forming grinding of internal gear rings. The grinding wheel head is connected to a grinding machine via a drive shaft and includes: a grinding wheel; a grinding surface, on which the grinding wheel grinds the internal gear teeth; a mounting groove, on one side of the grinding wheel; a connecting plate, installed in the mounting groove and connected to the grinding wheel; a cylindrical body, connected to the connecting plate; and multiple transmission grooves, spaced apart on the inner circumferential surface of the cylindrical body, adapted to engage with corresponding protrusions on the drive shaft to receive torque from the drive shaft. The grinding wheel and the connecting plate are connected to form the grinding wheel head. During the installation of the grinding wheel head, the grinding wheel and the connecting plate are fitted onto the drive shaft, and the transmission grooves on the cylindrical body engage with the protrusions on the drive shaft. The engagement of the transmission grooves and the protrusions ensures that the torque of the drive shaft is stably transmitted to the grinding wheel, maintaining the stability of the grinding wheel speed. The grinding wheel head is then clamped by two flat flanges mounted on the drive shaft. Maintaining a stable grinding wheel speed ensures moderate grinding force, making it less likely to produce vibration marks on the workpiece surface and resulting in high machining accuracy. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein: Figure 1 This is a three-dimensional structural diagram of a grinding wheel head used for CNC forming grinding of an internal gear ring in one embodiment of this application, viewed from one perspective. Figure 2 for Figure 1 A magnified view of a section at point A in the middle; Figure 3 This is a three-dimensional structural diagram of a grinding wheel head used for CNC forming grinding of an internal gear ring in one embodiment of this application, viewed from another perspective. Figure 4 This is a cross-sectional view of a grinding wheel head used for CNC forming grinding of an internal gear ring in one embodiment of this application; Figure 5 This is a schematic diagram of the grinding wheel structure in a grinding head used for CNC forming grinding of the internal gear ring of a gear in one embodiment of this application.

[0014] In the figure: grinding wheel 1, connecting plate 2, grinding surface 4, bolt 5, transmission groove 6, cylinder 7, limiting surface 8, first abutting end 9, clamping nut 10, second abutting end 11, gasket 12, wire groove 13, mounting groove 14, connecting through hole 15. Detailed Implementation

[0015] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0016] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0017] It should also be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.

[0018] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0019] See Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, this application proposes a grinding wheel head for CNC forming grinding of internal gear rings. The grinding wheel head is connected to a grinding machine via a drive shaft and includes: a grinding wheel 1; a grinding surface 4, which is provided on the grinding wheel 1, and the grinding wheel 1 grinds the internal gear teeth through the grinding surface 4; a mounting groove 14, which is provided on one side of the grinding wheel 1; a connecting plate 2, which is installed in the mounting groove 14 and connected to the grinding wheel 1; a cylindrical part 7, which is connected to the connecting plate 2; and a plurality of transmission grooves 6, which are spaced apart on the inner circumferential surface of the cylindrical part 7 and are adapted to engage with corresponding protrusions on the drive shaft to receive torque from the drive shaft.

[0020] Among them, grinding wheel 1 is the structural basis of the grinding wheel head used for CNC forming grinding of the internal gear ring. Other structures on the grinding wheel head used for CNC forming grinding of the internal gear ring are directly or indirectly mounted on grinding wheel 1. Grinding wheel 1 grinds the internal gear teeth through grinding surface 4.

[0021] The connecting disc 2, the cylindrical body 7, and the transmission groove 6 are the core structures of the grinding wheel head used for CNC forming grinding of internal gear rings. The mounting groove 14 helps to reduce the axial length of the grinding wheel head. The connecting disc 2 and the cylindrical body 7 are integrally formed. When the grinding wheel head is installed on the drive shaft, the transmission groove 6 on the cylindrical body 7 engages with the protrusion on the drive shaft. Through the cooperation between the transmission groove 6 and the protrusion, the torque of the drive shaft can be stably transmitted to the grinding wheel 1, maintaining the stability of the grinding wheel 1's rotational speed.

[0022] Specifically, the grinding wheel 1 is connected to the connecting disc 2 to form a grinding wheel head. During the installation of the grinding wheel head, the grinding wheel 1 and the connecting disc 2 are fitted onto the drive shaft, and the transmission groove 6 on the cylinder 7 engages with the protrusion on the drive shaft. The engagement between the transmission groove 6 and the protrusion ensures that the torque of the drive shaft can be stably transmitted to the grinding wheel 1, maintaining the stability of the grinding wheel 1's rotational speed. Two flat flanges are then installed on the drive shaft to clamp the grinding wheel head. Maintaining a stable rotational speed of the grinding wheel 1 results in moderate grinding force, reduces the likelihood of vibration marks on the workpiece surface, and ensures high machining accuracy.

[0023] Among them, grinding wheel 1 is a brown corundum grinding wheel. In this application, grinding wheel 1 of different specifications can be replaced according to the specifications of the gear internal teeth to better adapt to the gear internal teeth and improve the practicality of the grinding wheel head for CNC forming grinding of gear internal gear rings.

[0024] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, in some embodiments, the system further includes: a connecting through hole 15, both the connecting disc 2 and the grinding wheel 1 are provided with connecting through holes 15, and multiple connecting through holes 15 are provided, spaced apart circumferentially; a bolt 5, the bolt 5 passing through the connecting through holes 15 on the connecting disc 2 and the grinding wheel 1, the bolt 5 including a threaded section and an enlarged head, the threaded section passing through the connecting through holes 15 on the connecting disc 2 and the grinding wheel 1 and partially extending out of the connecting through holes 15, the enlarged head abutting against the connecting disc 2; and a clamping nut 10, the clamping nut 10 being screwed onto the bolt 5, the clamping nut 10 abutting against the grinding wheel 1. The clamping nut 10 abuts against the grinding wheel 1, and the enlarged head of the bolt 5 abuts against the connecting disc 2, thereby achieving the connection between the connecting disc 2 and the grinding wheel 1.

[0025] In this embodiment, multiple grooves 13 are provided circumferentially in the mounting groove 14 of the grinding wheel 1, and vertical protrusions adapted to the grooves 13 are provided on the connecting plate 2. The torque is transmitted to the grinding wheel 1 through the cooperation of the vertical protrusions and the grooves 13, so as to avoid excessive stress on the bolt 5 and improve the service life of the bolt 5.

[0026] See Figure 3 and Figure 4 As shown, in some embodiments, a gasket 12 is further included, with the gasket 12 disposed between the clamping nut 10 and the grinding wheel 1. The gasket 12 can effectively prevent the clamping nut 10 from loosening, improving the stability of the connection between the connecting disc 2 and the grinding wheel 1. The gasket 12 is preferably made of rubber, which can effectively protect the grinding wheel 1 and prevent the surface of the grinding wheel 1 from being damaged by the clamping nut 10.

[0027] See Figure 1 , Figure 2 and Figure 4 As shown, in some embodiments, it further includes a limiting surface 8, which is provided inside the cylindrical portion 7. The limiting surface 8 is used to limit the insertion depth of the protrusion. When the end of the protrusion abuts against the limiting surface 8, it indicates that the grinding wheel head has reached the preset installation position.

[0028] See Figure 1 and Figure 2 As shown, in some embodiments, it further includes a first abutment end 9, which is provided on the side of the cylindrical portion 7 away from the connecting plate 2. The first abutment end 9 is used to increase the abutment area between the cylindrical portion 7 and the one-sided flat flange, thereby enhancing the stability of the connection between the cylindrical portion 7 and the flat flange.

[0029] See Figure 3 As shown, in some embodiments, it further includes a second abutment end 11, which is provided on the other side of the grinding wheel 1. The second abutment end 11 is used to abut against the flat flange on the other side. The second abutment end 11 can enhance the structural strength of the grinding wheel 1 and prevent the opening of the mounting groove 14 from affecting the structural strength of the grinding wheel 1.

[0030] The above description is only a part or preferred embodiment of this application. Neither the text nor the drawings should limit the scope of protection of this application. All equivalent structural transformations made using the content of this application's specification and drawings under the overall concept of this application, or direct / indirect applications in other related technical fields, are included within the scope of protection of this application.

Claims

1. A grinding wheel head for numerically controlled form grinding of a gear ring, said grinding wheel head being connected to a grinding apparatus by means of a drive shaft, characterized in that include: Grinding wheel (1); Grinding surface (4), the grinding wheel (1) is provided with the grinding surface (4), the grinding wheel (1) grinds the internal teeth of the gear through the grinding surface (4); Mounting groove (14) is provided on one side of the grinding wheel (1). Connecting disc (2), the connecting disc (2) is installed in the mounting groove (14), and the connecting disc (2) is connected to the grinding wheel (1); The cylindrical part (7) is connected to the connecting plate (2); Multiple transmission grooves (6) are spaced apart on the inner circumferential surface of the cylindrical part (7), and the multiple transmission grooves (6) are adapted to engage with corresponding protrusions on the drive shaft to receive torque from the drive shaft.

2. The grinding wheel head for CNC forming grinding of internal gear rings according to claim 1, characterized in that, Also includes: The connecting through hole (15) is provided on both the connecting disc (2) and the grinding wheel (1); Bolt (5), the bolt (5) passes through the connecting through hole (15) on the connecting disc (2) and the grinding wheel (1); A clamping nut (10) is screwed onto the bolt (5), and the clamping nut (10) abuts against the grinding wheel (1).

3. The grinding wheel head for CNC forming grinding of internal gear rings according to claim 2, characterized in that, Also includes: A gasket (12) is provided between the clamping nut (10) and the grinding wheel (1).

4. The grinding wheel head for CNC forming grinding of internal gear rings according to claim 1, characterized in that, Also includes: The limiting surface (8) is provided inside the cylindrical part (7).

5. The grinding wheel head for CNC forming grinding of internal gear rings according to claim 1, characterized in that, Also includes: The first abutting end (9) is provided on the side of the cylindrical part (7) away from the connecting plate (2).

6. The grinding wheel head for CNC forming grinding of internal gear rings according to claim 1, characterized in that, Also includes: The second abutment end (11) is provided on the other side of the grinding wheel (1).

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