Honing head structure for internal meshing gear honing and gear honing machine

Abstract

The utility model discloses a honing head structure for internal gearing gear honing and a gear honing machine, the honing head structure comprises a honing head support and a honing machine shell vertically arranged on the honing head support, a circular supporting cavity is vertically arranged in the honing machine shell, and the bottom of the supporting cavity is provided with a supporting hole coaxially arranged; a honing barrel is coaxially arranged in the supporting cavity, honing wheels which are oppositely arranged in a protruding mode are coaxially installed in the honing barrel, and the honing wheels are located at the upper end of the honing barrel. A honing shaft is coaxially arranged at the lower end of the honing cylinder, and the honing shaft is rotatably mounted in the supporting hole through a supporting bearing; and the honing cylinder or the honing shaft is connected with a rotary driving mechanism. The honing head structure and the gear honing machine have the advantages of being reasonable in structural design, capable of meeting the requirement for machining precision, capable of reducing cost and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to gear machining and manufacturing technical field, especially to a structure of honing head for internal meshing gear honing and gear honing machine. BACKGROUND

[0002] High-precision hard tooth surface gear is an indispensable mechanical transmission component in the fields of automobile, wind power generation, ship, machine tool, aerospace, high-speed rail, etc. The main purpose of hard tooth surface precision gear honing finishing process is to realize the maximum load capacity and the minimum transmission noise of the gear. High-precision hard tooth surface gear honing finishing process is an effective manufacturing technology to realize the maximum load capacity and the minimum transmission noise of high-quality gears. Traditional gear machining processes such as hobbing, gear shaping, gear shaving and heat treatment cannot meet the requirements of transmission precision, transmission noise and cost reduction of gears in high-end equipment, and the corresponding hard tooth surface gear honing finishing method has become the dominant direction of gear honing manufacturing technology research. The gear honing process can achieve high dimensional accuracy, shape accuracy and low tooth surface roughness, and has high efficiency, low cost and no tooth surface burning, so it is widely used in hard tooth surface gear machining after heat treatment.

[0003] In order to make the gear and the honing wheel mesh with each other, the existing internal meshing gear honing machine usually sets a top clamping mechanism on both ends of the honing wheel in the axial direction to clamp the gear. In this way, the honing head has a ring structure with a through middle part. The honing wheel needs to rotate in the honing head, so a support bearing is arranged between the honing wheel and the honing head. The size of the support bearing is usually larger than that of the honing wheel. In order to ensure the accuracy of gear honing, the accuracy of the support bearing is also required to be high. That is, the support bearing of the existing gear honing machine needs to meet the requirements of large size and high accuracy at the same time. Under the same accuracy requirement, the larger the size of the bearing, the higher the cost will be, which makes the overall cost and maintenance cost of the gear honing machine higher. Therefore, the applicant designs a vertical gear honing machine, which clamps the gear by an independent top clamping mechanism and then inserts the whole honing head into the honing wheel for gear honing. Although this structure avoids the top clamping mechanism penetrating the honing head, it increases the axial size of the honing head. Therefore, how to design a honing head with reasonable structure, which can meet the requirements of machining accuracy and reduce the cost, has become a problem to be solved. UTILITY MODEL CONTENTS

[0004] In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by the utility model is to provide a honing head structure and gear honing machine with reasonable structure design, which can meet the requirements of machining accuracy and reduce the cost.

[0005] In order to solve the above-mentioned technical problem, the utility model adopts the following technical scheme:

[0006] The application discloses a structure of a honing head for internal meshing gear honing, which comprises a honing head support and a honing machine shell vertically arranged on the honing head support, wherein a circular support cavity is vertically arranged in the honing machine shell, the bottom of the support cavity is provided with a support hole arranged coaxially, a honing cylinder is coaxially arranged in the support cavity, a honing wheel is coaxially arranged in the honing cylinder and protrudes oppositely, the honing wheel is located at the upper end of the honing cylinder, the lower end of the honing cylinder is provided with a honing shaft arranged coaxially, the honing shaft is rotatably arranged in the support hole through a support bearing, and a rotary driving mechanism is connected to the honing cylinder or the honing shaft.

[0007] In the structure, the honing cylinder is coaxially arranged in the vertical support cavity and is coaxially arranged in the support hole through the honing shaft at the lower end, the size of the support hole is small, the size of the support bearing between the honing shaft and the support hole is also small, compared with the support bearing of the honing head in the prior art, the support bearing with a smaller size has a lower cost under the same precision requirement, so that the equipment cost and the maintenance cost can be reduced. In addition, the honing cylinder is vertically arranged through the honing shaft, the bending moment caused by the increase of the axial size of the honing cylinder can be avoided, and the gear honing precision can be more favorably ensured.

[0008] Further, the rotary driving mechanism comprises a stator assembly coaxially embedded in the support cavity, and a permanent magnet matched with the stator assembly is embedded on the outer wall of the honing cylinder.

[0009] In this way, on one hand, the honing cylinder can be used as a rotor part of the motor for driving the honing cylinder to rotate, and on the other hand, the magnetic force between the stator assembly and the permanent magnet can be used to coaxially support the honing cylinder in the support cavity, so that the coaxial precision of the honing cylinder during rotation is higher.

[0010] Further, the honing machine shell is rotatably arranged on the honing head support through swing shafts arranged coaxially on both sides of the honing machine shell, the swing shafts are located at the upper end of the honing machine shell, and an inclination driving mechanism for driving the honing machine shell to rotate around the axis of the swing shaft is arranged between the honing machine shell and the honing head support.

[0011] In this way, the honing machine shell is rotated around the swing shaft through the inclination driving mechanism, so that the honing cylinder coaxially arranged in the support cavity of the honing machine shell is also rotated, so that different working postures can be adapted.

[0012] Further, the inclination driving mechanism comprises an arc-shaped rack arranged on the honing machine shell and arranged coaxially with the swing shaft, and an inclination driving motor is arranged on the honing head support, the output end of the inclination driving motor is in transmission connection with an inclination driving gear arranged in mesh with the arc-shaped rack.

[0013] In this way, the tilt angle driving motor drives the tilt angle driving gear to rotate, drives the arc-shaped rack to move around the axis of the swing shaft, and thus drives the honing machine shell to rotate around the axis of the swing shaft.

[0014] Further, the middle part of the honing shaft is provided with a discharging hole.

[0015] Further, the inner cavity of the honing cylinder is provided with a grinding wheel groove arranged in a ring shape along the circumference, the grinding wheel groove is located at the top of the honing wheel and is provided with an upward through hole, the diameter of the grinding wheel groove matches the outer diameter of the honing wheel, and the width of the grinding wheel groove is smaller than the width of the honing wheel, the top of the honing wheel is detachably provided with a grinding wheel pressing ring, the honing wheel is arranged in the grinding wheel groove, and the grinding wheel pressing ring is arranged on the honing wheel.

[0016] Further, the support cavity is provided with an oil receiving disc arranged in a ring shape, the inner side of the oil receiving disc is provided with a first oil blocking ring extending upward, and the first oil blocking ring is arranged close to the honing cylinder.

[0017] Further, the outer side of the grinding wheel pressing ring is provided with a second oil blocking ring extending downward, and the upper end of the first oil blocking ring is located between the honing cylinder and the second oil blocking ring.

[0018] Further, a plurality of support bearings are arranged between the honing shaft and the support hole, and a rotary encoder is arranged between the honing machine shell and the honing cylinder or the honing shaft.

[0019] A gear honing machine comprises the internal meshing gear honing honing head structure.

[0020] In conclusion, the honing head structure and the gear honing machine have the advantages of reasonable structure design, meeting the machining precision requirements, reducing the cost, etc. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the embodiment.

[0022] Figure 2 It is a schematic diagram of the structure of the honing head assembly.

[0023] Figure 3 It is a schematic diagram of the structure of the honing machine shell part.

[0024] Figure 4 It is a schematic diagram of the structure of the honing machine shell part. Figure 2

[0025] Figure 5 It is a schematic diagram of the structure of the honing machine shell part. Figure 2

[0026] Figure 6 and​​Figure 7 This is a schematic diagram of the honing feed assembly.

[0027] Figure 8 This is a schematic diagram of the gear clamping mechanism. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the embodiments.

[0029] In specific implementation: a dual-station vertical gear honing machine, such as Figure 1 As shown, the honing head assembly includes a bed 1 and a honing head assembly 2 disposed in the middle of the bed 1. The back side of the bed 1 has a vertically arranged column 3, which extends along the length of the bed 1. A honing feed assembly is disposed on each side of the honing head assembly 2. The honing feed assembly includes a Z-axis support plate 4 and an X-axis support plate 6. The X-axis support plate 6 is laterally movable on the column 3 through a laterally arranged X-axis feed mechanism and can be moved above the honing head assembly 2. The Z-axis support plate 4 is vertically movable on the X-axis support plate 6 through a vertically arranged Z-axis feed mechanism. The Z-axis support plate 4 has a vertically arranged gear clamping mechanism 5, the clamping part of which extends downward and is suspended below the Z-axis support plate 4.

[0030] like Figures 2 to 5 As shown, the honing head assembly 2 includes a honing head support 21 and a honing housing 22 vertically mounted on the honing head support 21. A circular support cavity 221 is vertically arranged inside the honing housing 22, and the bottom of the support cavity 221 has a coaxially arranged support hole. A honing cylinder 23 is coaxially arranged inside the support cavity 221, and a honing wheel 24 is coaxially mounted inside the honing cylinder 23, with relatively protruding honing wheels. The wheel 24 is located at the upper end of the honing cylinder 23; the lower end of the honing cylinder 23 has a honing shaft 25 coaxially arranged, and the honing shaft 25 is rotatably installed in the support hole through the support bearing 251; a rotary drive mechanism 27 is connected to the honing cylinder 23 or the honing shaft 25; the maximum outer circle diameter of the clamping part of the gear clamping mechanism 5 is smaller than the minimum inner diameter of the honing wheel 24, and can extend into the honing cylinder 23.

[0031] With the above structure, the gear is clamped by the downwardly suspended clamping part of the gear clamping mechanism. Since the maximum circumscribed circle diameter of the clamping part is smaller than the minimum inner diameter of the honing wheel, the clamped gear can be sent into the honing barrel together with the clamping part by the Z-axis feeding mechanism, and is matched with the honing wheel for gear honing. The structure does not need to set the gear clamping mechanism on both sides of the honing wheel, so the honing head does not need to be set as a through annular structure, but only needs to set a relatively deep honing barrel to accommodate the extension length of the clamping part. Meanwhile, the honing barrel is coaxially arranged in the vertical support cavity, and the honing shaft at the lower end is coaxially arranged on the support hole. Since the size of the support hole is small, the size of the support bearing between the honing shaft and the support hole is also small. Compared with the support bearing of the existing structure of the honing head, the smaller support bearing has lower cost under the same precision requirement, so that the equipment cost and maintenance cost can be reduced. In addition, the honing barrel is vertically arranged through the honing shaft, which can avoid the bending moment caused by the increase of the axial size of the honing barrel, and is more conducive to ensuring the gear honing precision. Meanwhile, the two groups of honing feeding assemblies can work alternately. When one group is working, the other group can be used for loading and unloading, so that the processing efficiency can be greatly improved.

[0032] In implementation, the rotating driving mechanism 27 includes a stator assembly 271 coaxially arranged in the support cavity 221, and a permanent magnet 272 arranged on the outer wall of the honing barrel 23 and matched with the stator assembly 271.

[0033] In this way, on the one hand, the entire honing barrel can be used as a rotor part of the motor to drive the honing barrel to rotate, and on the other hand, the magnetic force between the stator assembly and the permanent magnet can be used to coaxially support the honing barrel in the support cavity, so that the coaxial precision of the honing barrel during rotation is higher.

[0034] As shown in Figure 4 and Figure 5 , the honing machine shell 22 is rotatably arranged on the honing head support 21 through the coaxially arranged swing shaft 222, and the swing shaft 222 is located at the upper end of the honing machine shell 22. An inclination driving mechanism 28 is arranged between the honing machine shell 22 and the honing head support 21 to drive the honing machine shell 22 to rotate around the axis of the swing shaft 222. In this way, the honing barrel coaxially arranged in the support cavity of the honing machine shell is also rotated by rotating the honing machine shell around the swing shaft through the inclination driving mechanism, so that different working postures can be adapted.

[0035] Specifically, as shown in Figure 3 and Figure 5As shown, the tilt drive mechanism 28 includes an arc-shaped rack 281 mounted on the honing machine housing 22, the arc-shaped rack 281 being coaxially arranged with the swing shaft 222; a tilt drive motor 282 is mounted on the honing head bracket 21, and the output end of the tilt drive motor 282 is connected to a tilt drive gear 283 meshing with the arc-shaped rack 281. Thus, the tilt drive motor drives the tilt drive gear to rotate, causing the arc-shaped rack to move around the axis of the swing shaft, thereby causing the entire honing machine housing to rotate around the axis of the swing shaft.

[0036] In this embodiment, the inner cavity of the honing cylinder 23 has a grinding wheel groove arranged in a ring along the circumference. The grinding wheel groove is located at the top of the honing wheel 24 and extends upward. The diameter of the grinding wheel groove matches the outer diameter of the honing wheel 24, and its width is smaller than the width of the honing wheel 24. A grinding wheel pressure ring 29 is detachably installed on the top of the honing wheel 24. The honing wheel 24 is disposed in the grinding wheel groove, and the grinding wheel pressure ring 29 is pressed onto the honing wheel 24. An annular oil receiving plate 291 is installed in the support cavity 221. The inner side of the oil receiving plate 291 has a first oil-blocking ring 292 extending upward, and the first oil-blocking ring 292 is disposed close to the honing cylinder 23. The outer side of the grinding wheel pressure ring 29 has a downwardly extending second oil baffle ring 293, and the upper end of the first oil baffle ring 292 is located between the honing cylinder 23 and the second oil baffle ring 293. The honing shaft 25 has a through-hole for unloading in the middle.

[0037] To enable the honing shaft 25 to rotate more stably, a plurality of support bearings 251 are provided between the honing shaft 25 and the support hole; a rotary encoder is provided between the honing machine housing 22 and the honing cylinder 23 or the honing shaft 25.

[0038] like Figures 6 to 8 As shown, the gear clamping mechanism 5 includes a honing spindle 51 vertically arranged on the Z-axis support plate 4, with a headstock portion at the lower end of the honing spindle 51; a tailstock pad 52 is arranged side by side on one side of the honing spindle 51, with the lower end of the tailstock pad 52 extending downward and suspended below the Z-axis support plate 4; a tailstock support plate 53 is mounted on the tailstock pad 52 via a vertically arranged tailstock feed mechanism, with a tailstock portion coaxially arranged with the headstock portion on the side of the lower end of the tailstock support plate 53 facing the honing spindle 51, and a gear clamping space is formed between the headstock portion and the tailstock portion.

[0039] like Figure 8As shown, the tailstock feeding mechanism comprises a tailstock guide rail 54 vertically arranged on the tailstock base plate 52, and the tailstock support plate 53 is slidably mounted on the tailstock guide rail 54 through a sliding block; the tailstock base plate 52 and the tailstock support plate 53 are provided with a vertical screw rod 55 therebetween, the upper end of the screw rod 55 is drivingly connected with a tailstock driving motor 56, and a screw rod nut on the screw rod 55 is connected with the tailstock support plate 53. Specifically, the side of the tailstock base plate 52 facing the honing spindle 51 is provided with a vertical through guide groove, the tailstock support plate 53 is located in the guide groove, and the tailstock guide rail 54 is arranged between the two sides of the tailstock support plate 53 and the corresponding groove walls.

[0040] In implementation, the X-axis feeding mechanism comprises an X-axis bearing support guide rail 61 and an X-axis auxiliary guide rail 62 transversely mounted on the column 3, the X-axis bearing support guide rail 61 is located at the top of the column 3, the X-axis auxiliary guide rail 62 is located on the side of the column 3 facing the honing head assembly 2, the upper end of the X-axis support plate 4 is provided with a support block 63 protruding towards the column 3, the bottom of the support block 63 is mounted on the sliding block of the X-axis bearing support guide rail 61, the side of the X-axis support plate 4 facing the column 3 is mounted on the sliding block of the X-axis auxiliary guide rail 62, and the X-axis support plate 6 and the column 3 are provided with a linear driving mechanism transversely arranged therebetween. In this way, the protruding support block forms a "7" shaped structure, the X-axis bearing support guide rail is arranged between the bottom of the support block and the top of the column, so that the weight of the X-axis support plate and the components mounted thereon is mainly applied to the column through the support block, which can greatly improve the service life of the X-axis auxiliary guide rail and the X-axis bearing support guide rail, and improve the overall rigidity, which is conducive to ensuring the honing precision.

[0041] In this embodiment, the side of the X-axis support plate 6 away from the column 3 is vertically and extendingly provided with a relatively protruding guide block, the Z-axis feeding mechanism comprises Z-axis guide rails 41 vertically mounted on the two sides of the guide block, the two sides of the X-axis support plate 6 are both provided with support blocks 42 protruding towards the X-axis support plate 6, the opposite sides of the two support blocks 42 are respectively mounted on the sliding blocks of the corresponding Z-axis guide rails 41, and the X-axis support plate 4 and the Z-axis support plate 6 are provided with a linear driving mechanism vertically arranged therebetween. In this way, the two support blocks of the Z-axis support plate form a "[" shape, on the one hand, the two Z-axis guide rails can be wrapped inside, so that the guide rails are in a relatively closed space, which is conducive to improving the working environment of the guide rails; on the other hand, the force of the Z-axis support plate in the front-rear direction is limited and supported by the width direction of the guide rails and the sliding blocks, and the force of the Z-axis support plate in the left-right direction is limited and supported by the support blocks and the guide blocks, so that the Z-axis support plate can be reliably vertically moved. The linear driving mechanism is a screw rod nut mechanism (not shown in the figure), and a driving motor (not shown in the figure) is connected to the screw rod nut mechanism.

[0042] In implementation, one side of the X-axis supporting plate 6 is provided with a vertical balance cylinder 7 through a supporting base, the Z-axis supporting plate 4 is provided with a pushing base vertically opposite to the supporting base, and the telescopic rod of the balance cylinder is connected to the pushing base. In this way, the balance cylinder balances and supports the weight of the Z-axis supporting plate and its accessories, so that the Z-axis will not produce additional errors due to load changes when moving, thereby improving the positioning accuracy of the Z-axis. At the same time, the Z-axis feeding mechanism only needs to provide the power required for feeding, without the need to overcome the weight of the parts, thereby reducing the burden of the Z-axis feeding mechanism.

[0043] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An internal meshing gear honing head structure characterized by, The application relates to a honing machine, which comprises a honing head support (21) and a honing machine shell (22) vertically arranged on the honing head support (21), wherein a circular support cavity (221) is vertically arranged in the honing machine shell (22), the bottom of the support cavity (221) is provided with a coaxially arranged support hole, a honing barrel (23) is coaxially arranged in the support cavity (221), a honing wheel (24) is coaxially arranged in the honing barrel (23), the honing wheel (24) is arranged at the upper end of the honing barrel (23), the lower end of the honing barrel (23) is provided with a coaxially arranged honing shaft (25), the honing shaft (25) is rotatably arranged in the support hole through a support bearing (251), and a rotary driving mechanism (27) is connected to the honing barrel (23) or the honing shaft (25).

2. The honing head structure for internal meshing gear tooth honing according to claim 1, wherein The rotary driving mechanism (27) comprises a stator assembly (271) coaxially embedded in the support cavity (221), and a permanent magnet (272) matched with the stator assembly (271) is embedded on the outer wall of the honing barrel (23).

3. The honing head structure for internal spline gear cutting as set forth in claim 1 or 2, wherein The two sides of the honing machine shell (22) are rotatably arranged on the honing head support (21) through coaxially arranged swing shafts (222), the swing shafts (222) are arranged at the upper end of the honing machine shell (22), and an inclination driving mechanism (28) for driving the honing machine shell (22) to rotate around the axis of the swing shaft (222) is arranged between the honing machine shell (22) and the honing head support (21).

4. The honing head structure for internal spline gear as claimed in claim 3, wherein The inclination driving mechanism (28) comprises an arc-shaped rack (281) arranged on the honing machine shell (22), the arc-shaped rack (281) is coaxially arranged with the swing shaft (222), an inclination driving motor (282) is arranged on the honing head support (21), and an inclination driving gear (283) meshed with the arc-shaped rack (281) is drivingly connected to the output end of the inclination driving motor (282).

5. The honing head structure for internal spline gear as set forth in claim 1 or 2, wherein The middle part of the honing shaft (25) is provided with a through arranged discharging hole.

6. The honing head structure for internal spline gear as set forth in claim 1 or 2, wherein The inner cavity of the honing barrel (23) is provided with a ring-shaped grinding wheel groove arranged along the circumference, the grinding wheel groove is arranged at the top of the honing wheel (24) and is arranged in a through manner upwards, the diameter of the grinding wheel groove is matched with the outer diameter of the honing wheel (24), and the width of the grinding wheel groove is smaller than the width of the honing wheel (24), a grinding wheel pressing ring (29) is detachably arranged at the top of the honing wheel (24), the honing wheel (24) is arranged in the grinding wheel groove, and the grinding wheel pressing ring (29) is pressed on the honing wheel (24).

7. The honing head structure for internal spline gear as claimed in claim 6, wherein An annular oil receiving disc (291) is arranged in the support cavity (221), the inner side of the oil receiving disc (291) is provided with a first oil blocking ring (292) extending upwards, and the first oil blocking ring (292) is arranged close to the honing barrel (23).

8. The honing head structure for internal spline gear as claimed in claim 7, wherein The outer side of the grinding wheel pressing ring (29) is provided with a second oil blocking ring (293) extending downwards, and the upper end of the first oil blocking ring (292) is located between the honing barrel (23) and the second oil blocking ring (293).

9. The honing head structure for internal spline gear cutting as set forth in claim 1 or 2, wherein A plurality of support bearings (251) are arranged between the honing shaft (25) and the support hole; a rotary encoder is arranged between the honing machine shell (22) and the honing barrel (23) or honing shaft (25).

10. A gear honing machine characterized by, The honing head structure for internal meshing gear honing comprises the honing head structure as claimed in any one of claims 1 to 9.

Images