Gear shaping tool for deep-hole thin-wall inner gear ring

Abstract

The utility model relates to the technical field of gear machining tools, and discloses a gear shaping tool for a deep-hole thin-wall inner gear ring, which comprises a cylindrical gear shaping jacket and a plurality of groups of axial pressing components, the gear shaping jacket is arranged on the periphery of the inner gear ring in a sleeving mode, the lower end face of the gear shaping jacket is pressed on the flange face of the inner gear ring, a longitudinal adjusting opening is formed in the gear shaping jacket, mounting blocks protruding out of the gear shaping jacket are arranged at the two ends of the adjusting opening, and connecting structures for fixing the gear shaping jacket and the inner gear ring are arranged on the mounting blocks. A plurality of rows of through threaded holes are formed in the outer wall of the gear shaping jacket, radial supporting screws are installed in the threaded holes, and the end faces of the radial supporting screws make contact with the periphery of the inner gear ring; the axial pressing assembly comprises an adjusting supporting leg and a pressing plate on the adjusting supporting leg, the other end of the pressing plate is pressed on the upper end face of the gear shaping clamping sleeve, a through hole is formed in the pressing plate, a threaded rod is installed in the through hole, and the threaded rod is in threaded connection with a nut used for pressing the pressing plate. In practical application, the device effectively prevents the workpiece from deforming, and improves the machining precision and quality.

Description

TECHNICAL FIELD

[0001] The utility model relates to gear machining frock technical field, concretely relates to a kind of gear shaping frock for deep hole thin wall inner gear ring. BACKGROUND

[0002] As a kind of reducer, yaw pitch gear box is an important component of wind turbine generator unit, with the development of wind power industry, yaw pitch gear box is towards light weight, high torque density direction development, yaw pitch gear box parts are increasingly highly integrated. As an important part of yaw pitch gear box, inner gear ring is the most commonly used processing method in its gear processing.

[0003] For deep hole thin wall inner gear ring, existing clamping mode is to press the pressing plate on the end face of workpiece, and the workpiece is fixed on the machining table, since the rigidity of thin wall part is poor, the end face of workpiece is deformed under pressure;And in the process of gear shaping, workpiece is deformed under stress, leading to the phenomenon of gear shaping cutter vibration, under this condition, the tooth surface of most workpieces will appear vibration mark and precision out-of-tolerance, thereby seriously affecting the machining precision and quality of product, it is difficult to meet the demand of high standard product. UTILITY MODEL CONTENTS

[0004] The utility model intends to provide a kind of gear shaping frock for deep hole thin wall inner gear ring to improve the machining precision and quality of inner gear ring.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: a kind of gear shaping frock for deep hole thin wall inner gear ring, including the gear shaping sleeve of cylindrical and multiple axial compression components distributed along the circumferential direction of gear shaping sleeve;Gear shaping sleeve is sleeved on the outer periphery of inner gear ring and its lower end surface is pressed on the flange surface of inner gear ring, longitudinal adjusting opening is provided on gear shaping sleeve, and the both ends of adjusting opening are provided with mounting block protruding from gear shaping sleeve, and connecting structure for fixing gear shaping sleeve and inner gear ring is provided on mounting block;Multiple rows of radial through threaded holes are annularly distributed on the outer wall of gear shaping sleeve, radial support screw is installed in threaded hole, and the end surface of radial support screw is in contact with the outer periphery of inner gear ring;Axial compression component includes adjusting leg and the pressing plate thereon, the other end of pressing plate is pressed on the upper end surface of gear shaping sleeve, through hole is opened on pressing plate and screw rod is installed in through hole, and nut for compressing pressing plate is threadedly connected on screw rod.

[0006] The principle and advantages of the present scheme are:

[0007] 1. In actual application, the gear shaping sleeve of the scheme is sleeved on the outer periphery of the inner gear ring, and the lower end surface thereof is pressed on the flange surface of the inner gear ring. The pressing plate of the axial pressing assembly is pressed on the upper end surface of the gear shaping sleeve. Compared with the prior art in which the pressing force is directly applied to the end surface of the workpiece, the scheme transmits the pressing force through the gear shaping sleeve, effectively avoids deformation of the workpiece directly subjected to pressure, improves the machining precision, and prevents precision out-of-tolerance. In addition to the precision out-of-tolerance problem, more than 90% of the tooth surfaces of the workpiece will appear vibration marks during the existing gear shaping process. The vibration marks will cause changes in the micro-geometric shape of the tooth surface, reduce the contact area when the gear is engaged, and unevenly distribute the contact points, which directly affects the transmission precision of the gear. In the scheme, the gear shaping sleeve tightly fixes the outer periphery of the workpiece. The overall radial thickness of the gear shaping sleeve and the workpiece is increased, the overall rigidity of the workpiece is enhanced, the ability of the workpiece to resist impact and vibration is effectively improved, the phenomenon of gear shaping tool vibration during the gear shaping process is avoided, and the tooth surface of the product after machining is free of vibration marks, which significantly improves the product quality.

[0008] 2. The gear shaping sleeve is provided with an adjusting opening. The adjusting opening makes the gear shaping sleeve have a certain elasticity, and can be suitable for tightly fixing different sizes of workpieces, and has strong universality. In addition, a plurality of threaded holes are formed in the outer wall of the gear shaping sleeve. Radial support screws are installed in the threaded holes. The gear shaping sleeve is provided with an adjusting opening, and cannot be completely tightly attached to the workpiece when tightly fixing workpieces of different sizes. Therefore, the gear shaping sleeve is further pressed against the outer periphery of the workpiece through the radial support screws, so that the workpiece is uniformly stressed in the circumferential direction when clamped, and the rigidity of the workpiece is enhanced to avoid deformation.

[0009] Further, the width of the adjusting opening is 3-15 mm.

[0010] If the width of the adjusting opening is less than the above range, the adjusting range of the gear shaping sleeve will be limited, and it will be difficult to adapt to inner gear rings of different sizes, reducing the applicability and flexibility of the tool. If the width of the adjusting opening is greater than the above range, the position of the gear shaping sleeve during clamping will be unstable, affecting the positioning accuracy of the workpiece, and further affecting the machining quality. In addition, a too large opening will reduce the contact area between the gear shaping sleeve and the workpiece, resulting in insufficient support force, uneven support force of the workpiece, and local excessive stress, which is likely to cause deformation of the workpiece.

[0011] Further, the wall thickness of the gear shaping sleeve is 5-30 mm.

[0012] The above wall thickness dimension limits make the gear shaping sleeve have stronger structural rigidity, can withstand greater pressing force, ensures the stability of the workpiece under high load machining conditions, reduces workpiece loosening and deformation caused by insufficient pressing force, and also reduces vibration of the gear shaping sleeve during high-speed machining, reduces the gear shaping tool vibration phenomenon, and improves machining precision. In addition, the above size range makes the gear shaping sleeve rigid while also ensuring that the gear shaping sleeve has elasticity. If the wall thickness is too thick, the gear shaping sleeve will not have sufficient elasticity, and will not be able to effectively tightly fix workpieces of different sizes.

[0013] Furthermore, the threaded holes on the gear shear sleeve are in two rows, with 3-12 threaded holes in each row.

[0014] The above configuration ensures that the supporting force on the outer periphery of the internal gear ring is evenly distributed along the axial and circumferential directions, preventing workpiece deformation during machining and avoiding excessive radial support screws that would prolong clamping time.

[0015] Furthermore, the number of sets of the axial clamping assembly is 2-12.

[0016] Furthermore, the axial clamping assembly and the threaded holes on the gear shaping sleeve are staggered. This staggered arrangement forms a multi-point support structure, enhancing the rigidity of the entire tooling, effectively absorbing and dispersing vibrations during machining, reducing tool vibration, and improving machining accuracy.

[0017] Furthermore, the connection structure is a bolt structure, with corresponding connection holes on the two mounting blocks, and connection screws installed in the connection holes.

[0018] Furthermore, when the upper surfaces of the gear shaping sleeve and the internal gear ring are flush, the pressure plate presses down on both upper surfaces simultaneously. This increases the radial force-bearing area of ​​the internal gear ring, making the overall pressure on the internal gear ring more stable and enhancing the workpiece's resistance to impact and vibration during gear shaping. Attached Figure Description

[0019] Fig. 1 This is a cross-sectional view of an embodiment of the present utility model.

[0020] Fig. 2 This is a top view of an embodiment of the present utility model.

[0021] Fig. 3 This is a side view of an embodiment of the present utility model. Detailed Implementation

[0022] The following detailed description illustrates the specific implementation method:

[0023] The reference numerals in the accompanying drawings include: workpiece 1, gear sleeve 2, adjusting opening 3, mounting block 4, connecting hole 5, connecting screw 6, threaded hole 7, radial support screw 8, axial clamping assembly 9, adjusting leg 91, pressure plate 92, screw 93, and nut 94.

[0024] The basic implementation examples are as follows: Figs. 1-3 As shown: A gear-shaping tool for a deep-hole thin-walled internal gear ring includes a cylindrical gear-shaping sleeve 2 and multiple sets of axial clamping components 9 distributed circumferentially along the gear-shaping sleeve. In this embodiment, the number of sets of axial clamping components 9 is 2-12. In this embodiment, the number of sets of axial clamping components 9 is 6. The installation angle between two adjacent axial clamping components 9 is 60 degrees.

[0025] The gear shaping sleeve 2 is sleeved on the outer periphery of the inner gear ring, i.e., the workpiece 1, and is in clearance fit with the inner gear ring, and the clearance is 0.5-4 mm. The lower end surface of the gear shaping sleeve 2 is pressed on the flange surface of the inner gear ring. The wall thickness of the gear shaping sleeve 2 is 5-30 mm, and the gear shaping sleeve 2 is suitable for workpieces 1 with an outer diameter of 100-600 mm. This size range makes the gear shaping sleeve 2 have stronger structural rigidity, can withstand greater pressing force, ensures the stability of the workpiece 1 under high load machining conditions, reduces the loosening and deformation of the workpiece 1 caused by insufficient pressing force, and also reduces the vibration of the gear shaping sleeve 2 during high-speed machining, reduces the tool vibration of the gear shaping cutter, and improves the machining precision. Secondly, this size range makes the gear shaping sleeve 2 have rigidity while also ensuring that the gear shaping sleeve 2 has elasticity. If the wall thickness is too thick, the gear shaping sleeve 2 will not have enough elasticity, and it will not be able to effectively hold and fix workpieces 1 of different sizes. Preferably, the thickness of the gear shaping sleeve 2 in the embodiment is 20 mm.

[0026] The gear shaping sleeve 2 is provided with a longitudinal adjusting opening 3. The two ends of the adjusting opening 3 are provided with mounting blocks 4 protruding from the gear shaping sleeve 2. The mounting blocks 4 are integrally formed with the gear shaping sleeve 2 or are welded and fixed on the gear shaping sleeve 2. The mounting blocks 4 are provided with a connecting structure for fixing the gear shaping sleeve and the inner gear ring. The connecting structure is a bolt structure. Corresponding connecting holes 5 are formed in the two mounting blocks 4. The connecting holes 5 are vertically and uniformly distributed. Connecting screws 6 are installed in the connecting holes 5. The width of the adjusting opening 3 is 3-15 mm. If the width is less than this range, the adjusting range of the gear shaping sleeve 2 will be limited, and it will be difficult to adapt to inner gear rings of different sizes, reducing the applicability and flexibility of the tool. If the width is greater than this range, the gear shaping sleeve 2 will be unstable in position during clamping, affecting the positioning accuracy of the workpiece 1 and thus affecting the machining quality. Moreover, a too wide opening will reduce the contact area between the gear shaping sleeve 2 and the workpiece 1, resulting in insufficient support force, uneven support force of the workpiece 1, and excessive local stress, which can easily cause deformation of the workpiece 1. Preferably, the width of the adjusting opening 3 in the embodiment is 10 mm.

[0027] A plurality of rows of radially penetrating threaded holes 7 are annularly distributed on the outer wall of the gear shaping sleeve 2. Radial support screws 8 are installed in the threaded holes 7. The end surface of the radial support screw 8 is in contact with the outer periphery of the inner gear ring. Preferably, in the embodiment, the threaded holes 7 on the gear shaping sleeve 2 are two rows, and the number of threaded holes 7 in each row is 3-12. The gear shaping sleeve 2 is provided with an adjusting opening 3 and cannot be completely tightly held when holding workpieces 1 of different sizes. Therefore, the gear shaping sleeve 2 is further pressed against the outer periphery of the workpiece 1 by the radial support screws 8, so that the workpiece 1 is uniformly stressed in the circumferential direction when clamped, thereby enhancing the rigidity and avoiding deformation.

[0028] The axial compression assembly 9 comprises an adjusting leg 91 and a pressing plate 92 on the adjusting leg 91, the adjusting leg 91 can adjust the height of the pressing plate 92 according to the size of the inner ring, and the other end of the pressing plate 92 is pressed on the upper end surface of the pinion sleeve 2; when the upper end surfaces of the pinion sleeve 2 and the inner ring are flush, the pressing plate 92 is pressed on the upper end surfaces of the two at the same time, so that the radial stress area of the inner ring is increased, the inner ring is more stable as a whole, and the impact and vibration resistance of the workpiece 1 in the pinion machining process is enhanced; a through hole is formed in the pressing plate 92, and a screw rod 93 is arranged in the through hole; the bottom of the screw rod 93 is in contact with the workbench on which the inner ring is placed, and a nut 94 for pressing the pressing plate 92 is threadedly connected to the screw rod 93.

[0029] The axial compression assembly 9 is staggered with the threaded holes 7 on the pinion sleeve 2, a multi-point support structure is formed by staggered arrangement, the rigidity of the whole tooling is enhanced, the vibration in the machining process is effectively absorbed and dispersed, the tool vibration phenomenon of the pinion cutter is reduced, and the machining precision is improved.

[0030] Through the above arrangement, the pinion sleeve 2 is sleeved on the outer periphery of the inner ring and the lower end surface thereof is pressed on the flange surface of the inner ring, and the pressing plate 92 of the axial compression assembly 9 is pressed on the upper end surface of the pinion sleeve 2; compared with the prior art in which the pressing force is directly applied to the end surface of the workpiece 1, the pressing force is transmitted through the pinion sleeve 2 in the present application, the deformation of the workpiece 1 caused by direct pressing is effectively avoided, the machining precision is improved, and the precision is prevented from being out of tolerance; secondly, the pinion sleeve 2 tightly fixes the outer periphery of the workpiece 1, the overall radial thickness of the pinion sleeve 2 and the workpiece 1 is increased, the overall rigidity of the workpiece 1 is enhanced, the impact and vibration resistance of the workpiece 1 is effectively improved, the tool vibration phenomenon in the pinion machining process is avoided, the tooth surface of the product machined does not have vibration marks, and the product quality is significantly improved; furthermore, the adjusting opening 3 is formed in the pinion sleeve 2, the pinion sleeve 2 has a certain elasticity due to the adjusting opening 3, the pinion tooling is suitable for tightly fixing workpieces 1 of different sizes, and the tooling has high universality and flexibility.

[0031] The above is only an embodiment of the present application, and the well-known specific technical solutions and / or common knowledge in the scheme are not described in detail. It should be noted that, for those skilled in the art, without departing from the technical scheme of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicality of the present application. The protection scope of the present application should be subject to the content of the claims, and the specific embodiments and the like in the specification can be used to explain the content of the claims.

Claims

1. A gear shaping tool for a deep hole thin wall inner ring, characterized in that: The application relates to a gear shaping sleeve and axial compression assembly, which comprises a cylindrical gear shaping sleeve and a plurality of axial compression assemblies distributed along the circumference of the gear shaping sleeve; the gear shaping sleeve is sleeved on the outer periphery of an inner gear ring and the lower end surface of the gear shaping sleeve is pressed on the flange surface of the inner gear ring; a longitudinal adjusting opening is arranged on the gear shaping sleeve, and two mounting blocks protruding from the gear shaping sleeve are arranged at the two ends of the adjusting opening; a connecting structure for fixing the gear shaping sleeve and the inner gear ring is arranged on the mounting blocks; a plurality of rows of radial threaded holes are annularly distributed on the outer wall of the gear shaping sleeve, radial supporting screws are arranged in the threaded holes, and the end surface of the radial supporting screw is in contact with the outer periphery of the inner gear ring; the axial compression assembly comprises an adjusting leg and a pressing plate arranged on the adjusting leg, the other end of the pressing plate is pressed on the upper end surface of the gear shaping sleeve, a through hole is arranged on the pressing plate, a screw rod is arranged in the through hole, and a nut for pressing the pressing plate is threadedly connected on the screw rod.

2. The gear shaping tool for a deep hole thin-walled inner ring according to claim 1, characterized in that: The width of the adjusting opening is 3-15 mm.

3. The gear shaping tool for a deep hole thin-walled inner ring according to claim 1, characterized in that: The wall thickness of the gear shaping sleeve is 5-30 mm.

4. The gear shaping tool for a deep hole thin-walled inner ring as claimed in any one of claims 1-3, characterized in that: The threaded holes on the gear shaping sleeve are two rows, and the number of threaded holes in each row is 3-12.

5. The gear shaping tool for a deep hole thin-walled ring gear as set forth in claim 4, wherein: The number of the axial compression assemblies is 2-12.

6. The gear shaping tool for a deep hole thin-walled ring gear as set forth in claim 5, wherein: The axial compression assemblies and the threaded holes on the gear shaping sleeve are staggered.

7. The gear shaping tool for a deep hole thin-walled ring gear as set forth in claim 6, wherein: The connecting structure is a bolt structure, corresponding connecting holes are arranged on the two mounting blocks, and connecting screws are arranged in the connecting holes.

8. The gear shaping tool for a deep hole thin-walled ring gear as set forth in claim 7, wherein: When the upper end surfaces of the gear shaping sleeve and the inner gear ring are flush, the pressing plate is simultaneously pressed on the upper end surfaces of the two.

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