Large-aperture long-axis profile internal grinding device and machining lathe

Abstract

The utility model relates to the technical field of machining, and provides a large-aperture long-axis profile inner circle grinding device and a machining lathe, the long-axis profile inner circle grinding device comprises a base, a long arm assembly, a grinding assembly and a driving module; the base is movably mounted on a machine tool; one end of the long arm assembly is connected with the driving module, and the other end is connected with the grinding assembly; the driving module comprises a mounting seat, a motor, a motor force arm, a motor transmission arm, a gland I and a gland II; the mounting seat is detachably connected with the base, and the motor is mounted on the mounting seat and connected with the motor force arm; the driving end of the motor is connected with the motor transmission arm; the two ends of the first gland are detachably connected to the mounting base, and the first gland can be opened or closed at the joint of the motor and the motor force arm. The two ends of the second gland are detachably connected to the mounting base, and the second gland can be opened or closed at the moment arm of the motor. According to the internal grinding device, the coaxiality of the inner hole of the long-axis profile and the external reference can be ensured, so that the machining precision of the long-axis profile is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and more specifically, to a grinding device and machining lathe for a long shaft profile with a large diameter. Background Technology

[0002] In the field of large-scale high-end equipment manufacturing (such as aerospace, energy equipment, heavy machinery, and defense industry), large-diameter long-shaft profiles are key basic components. The dimensional accuracy, geometric accuracy, and surface quality of the inner hole of such long-shaft profiles directly determine the working performance, reliability, and lifespan of large equipment.

[0003] Currently, traditional internal grinding machines lack the capability to machine the inner holes of long shaft profiles. Honing equipment, on the other hand, uses a honing head that is floatingly connected to the spindle via a universal joint, its movement passively following the existing centerline of the pre-machined hole. While the floating self-centering characteristic of the honing head can effectively improve the roundness and cylindricity of the hole for machining the inner holes of large-diameter long shaft profiles, it cannot guarantee the coaxiality of the inner hole with the external datum of the long shaft profile. This coaxiality issue not only significantly affects the precision fit between the machined long shaft profile and other parts or shaft components, but also introduces additional destructive loads, especially for long shaft profiles used to transmit torque or withstand bending moments. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings and deficiencies of existing technologies and provide an internal grinding device for long shaft profiles with large diameters. This internal grinding device can perform precision grinding on the inner holes of long shaft profiles, ensuring not only the roundness of the entire inner hole and achieving the designed surface roughness, but also guaranteeing the coaxiality of the inner hole of the long shaft profile with the external reference, thereby greatly improving the machining accuracy of long shaft profiles. This invention also provides a machining lathe that can improve the machining accuracy of grinding the inner holes of long shaft profiles.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a large-diameter long-shaft profile internal grinding device, which is located at the end of the long-shaft profile and includes a base, a long arm assembly, a grinding assembly, and a drive module for driving the long arm assembly to rotate; the base is movably mounted on a machine tool; the drive module is mounted on the base; one end of the long arm assembly is connected to the drive module, and the other end is connected to the grinding assembly; during operation, the end of the long arm assembly with the grinding assembly is inserted into the fixed inner hole of the long-shaft profile, the movably mounted base drives the long arm assembly and the grinding assembly to move within the inner hole of the long-shaft profile, and the drive module drives the long arm assembly to rotate so as to drive the grinding assembly to perform grinding processing on the inner hole of the long-shaft profile;

[0006] The drive module includes a mounting base, a motor, a motor arm, a motor transmission arm, a first pressure cover, and a second pressure cover. The mounting base is detachably connected to the base, and the motor is mounted on the mounting base and connected to the motor arm. The drive end of the motor is connected to the motor transmission arm to drive the motor transmission arm to rotate. The two ends of the first pressure cover are detachably connected to the mounting base, and the first pressure cover can be opened or closed at the connection between the motor and the motor arm. The two ends of the second pressure cover are detachably connected to the mounting base, and the second pressure cover can be opened or closed at the motor arm.

[0007] The motor drive arm passes through the inside of the motor lever arm and extends out of the motor lever arm to connect with the long arm assembly. The motor drive arm is rotatably mounted inside the motor lever arm via bearings.

[0008] The long arm assembly includes an extension base and a long arm; the extension base is connected to a motor drive arm, one end of the long arm is detachably connected to the extension base, and the other end is connected to a grinding assembly.

[0009] The extension seat is a tapered extension seat with an inner conical hole, and the motor drive arm is matched and connected to the inner conical hole of the tapered extension seat. The tapered extension seat of this utility model achieves a gapless, high-rigidity and automatic centering connection with the motor drive arm through the inner conical hole, and the other end is connected to the grinding assembly to ensure the coaxiality of the grinding assembly and the motor drive arm, thereby further improving the processing accuracy of long shaft profiles.

[0010] The grinding assembly includes a grinding disc and a threaded pressure plate; the grinding disc is mounted on the long arm assembly, and the threaded pressure plate is threadedly connected to the long arm assembly and presses the grinding disc tightly.

[0011] The internal grinding device for long-shaft profiles also includes a support frame for mounting on the machine tool and positioning the long-shaft profile. The support frame includes a frame body with several clamping components arranged circumferentially on the frame body. These clamping components are movably mounted on the frame body, and the space enclosed by them serves as a clamping station for the long-shaft profile. Rollers are provided at the ends of the clamping components facing the clamping station. This device's support frame provides clamping support for the long-shaft profile, further ensuring that the long-shaft profile remains coaxial during machining on the lathe.

[0012] A machining lathe includes the aforementioned internal grinding device for large-diameter long shaft profiles; the machining lathe also includes the machine tool and a spindle mechanism for clamping the long shaft profile; the spindle mechanism is mounted on the machine tool and includes a chuck fixture for clamping the long shaft profile;

[0013] The base is located at the end of the long shaft profile, enabling the long arm assembly and grinding assembly to extend into and move within the inner hole of the long shaft profile.

[0014] The long shaft profile internal grinding device also includes a support frame for mounting on the machine tool and positioning the long shaft profile; the support frame includes a frame body, and a plurality of clamping components are arranged circumferentially on the frame body; the plurality of clamping components are movably mounted on the frame body, and the space enclosed by the plurality of clamping components serves as a clamping station for the long shaft profile; rollers are provided at the ends of the plurality of clamping components facing the clamping station; the frame body is movably connected to the machine tool.

[0015] The spindle mechanism also includes a spindle box and a drive component; the spindle box is installed on the machine tool, and the drive component is installed inside the spindle box and connected to the chuck fixture to drive the chuck fixture to rotate and drive the long shaft profile to rotate.

[0016] This utility model relates to an internal grinding device for long-shaft profiles. A drive module and a long arm assembly serve as the working arm for large-diameter long-shaft profiles, while the rotating motor-driven arm's stability is greatly improved by the support of the motor lever arm. During operation, the drive module and long arm assembly extend into the inner hole of the long-shaft profile. The motor in the drive module drives the motor-driven arm, which in turn rotates the grinding assembly, achieving stable grinding of the inner hole of the long-shaft profile. This not only ensures the roundness of the entire inner hole, achieving the designed surface roughness, but also guarantees the coaxiality of the inner hole of the long-shaft profile with the external reference, thereby significantly improving the processing accuracy of the long-shaft profile.

[0017] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0018] 1. The large-diameter long shaft profile internal grinding device and machining lathe of this utility model can perform precision grinding on the internal hole of the long shaft profile. It can not only ensure the roundness of the entire internal hole and achieve the designed surface roughness, but also ensure the coaxiality of the internal hole of the long shaft profile with the external reference, thereby greatly improving the machining accuracy of the long shaft profile.

[0019] 2. The design of the first and second pressure covers of this utility model allows the motor and motor arm to be securely mounted on the mounting base, ensuring the processing progress of the inner hole of the long shaft profile; at the same time, the first and second pressure covers also serve as safety protection. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the internal grinding device of this utility model;

[0021] Figure 2 This is an internal schematic diagram of the internal grinding device of this utility model;

[0022] Figure 3 This is a schematic diagram of the machining lathe according to this utility model;

[0023] Figure 4 This is a schematic diagram of the handrail of this utility model;

[0024] Among them, 1 is the base, 2 is the mounting base, 3 is the motor, 4 is the motor lever arm, 5 is the motor transmission arm, 6 is the bearing, 7 is the first pressure cover, 8 is the second pressure cover, 9 is the extension seat, 10 is the long arm, 11 is the grinding disc, 12 is the threaded pressure plate, 13 is the support frame, 13.1 is the frame body, 13.2 is the clamping assembly, 13.3 is the roller, 14 is the machine tool, 15 is the main spindle mechanism, 15.1 is the chuck fixture, 15.2 is the main spindle box, and 16 is the long shaft profile. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0026] Example

[0027] like Figures 1 to 4 As shown, the large-diameter long-shaft profile internal grinding device of this utility model is located at the end of the long-shaft profile 16 and includes a base 1, a long arm assembly, a grinding assembly, and a drive module for driving the long arm assembly to rotate. The base 1 is movably mounted on the machine tool 14, the drive module is mounted on the base 1, one end of the long arm assembly is connected to the drive module, and the other end is connected to the grinding assembly. During operation, the end of the long arm assembly with the grinding assembly is inserted into the fixed inner hole of the long-shaft profile 16. The movably mounted base 1 drives the long arm assembly and the grinding assembly to move within the inner hole of the long-shaft profile 16. The drive module drives the long arm assembly to rotate so that the grinding assembly can perform grinding processing on the inner hole of the long-shaft profile 16.

[0028] Specifically, the drive module includes a mounting base 2, a motor 3, a motor arm 4, and a motor transmission arm 5. The mounting base 2 is detachably connected to the base 1. The motor 3 is mounted on the mounting base 2 and connected to the motor arm 4. The drive end of the motor 3 is connected to the motor transmission arm 5 to drive the motor transmission arm 5 to rotate. The motor transmission arm 5 passes through the motor arm 4 and extends out of the motor arm 4 to connect to the long arm assembly. The motor transmission arm 5 is rotatably mounted inside the motor arm 4 via a bearing 6.

[0029] The drive module also includes a first pressure cover 7 and a second pressure cover 8. The two ends of the first pressure cover 7 are detachably connected to the mounting base 2, and the first pressure cover 7 can be opened or closed at the connection between the motor 3 and the motor arm 4. The two ends of the second pressure cover 8 are detachably connected to the mounting base 2, and the second pressure cover 8 can be opened or closed at the motor arm 4.

[0030] The long arm assembly of this utility model includes an extension seat 9 and a long arm 10. The extension seat 9 is a tapered extension seat with an inner tapered hole. The motor drive arm 5 is matched and connected to the inner tapered hole of the tapered extension seat. One end of the long arm 10 is detachably connected to the extension seat 9, and the other end is connected to the grinding assembly. The tapered extension seat of this utility model achieves a gapless, high-rigidity, and self-centering connection with the motor drive arm 5 through the inner tapered hole. The other end is connected to the grinding assembly, ensuring the coaxiality of the grinding assembly and the motor drive arm 5, thereby further improving the processing accuracy of the long shaft profile 16. In addition, the grinding assembly includes a grinding disc 11 and a threaded pressure plate 12. The grinding disc 11 passes through the long arm 10 of the long arm assembly, and the threaded pressure plate 12 is threadedly connected to the long arm 10 of the long arm assembly and presses the grinding disc 11 tightly.

[0031] The internal grinding device for long-shaft profiles of this utility model also includes a support frame 13 for positioning the long-shaft profile 16 on the machine tool 14. The support frame 13 includes a frame body 13.1, on which a plurality of clamping components 13.2 are circumferentially arranged. The clamping components 13.2 are movably mounted on the frame body 13.1, and the space enclosed by the clamping components 13.2 serves as a clamping station for the long-shaft profile 16. During operation, the clamping components 13.2 can be adjusted to change the size of the clamping space to accommodate long-shaft profiles 16 of different sizes. Rollers 13.3 are provided at the ends of the clamping components 13.2 facing the clamping station. The support frame 13 of this utility model provides clamping support for the long-shaft profile 16, further ensuring that the long-shaft profile 16 remains coaxial during machining on the lathe.

[0032] The machining lathe of this utility model includes the aforementioned internal grinding device for large-diameter long shaft profiles. The machining lathe also includes the aforementioned machine tool 14 and a spindle mechanism 15 for clamping the long shaft profile 16. The spindle mechanism 15 is mounted on the machine tool 14 and includes a chuck clamp 15.1, a spindle box 15.2, and a drive component for clamping the long shaft profile 16. The spindle box 15.2 is mounted on the machine tool 14, and the drive component is located inside the spindle box 15.2 and connected to the chuck clamp 15.1, thereby driving the chuck clamp 15.1 to rotate and thus rotate the long shaft profile 16. When the internal grinding device of this utility model grinds the inner hole of the long shaft profile 16, the chuck clamp 15.1 only fixes the long shaft profile 16; when the long shaft profile 16 requires additional processing, the chuck clamp 15.1 can be driven to rotate, thus rotating the long shaft profile 16 for additional processing. The base 1 of this utility model is located at the end of the long shaft profile 16, enabling the long arm assembly and grinding assembly to extend into the inner hole of the long shaft profile 16 and move.

[0033] In this invention, the base 1 and the support frame 13 are movably connected to the machine tool 14. The machine tool 14 is equipped with a linear guide rail, and the base 1 and the support frame 13 are each equipped with a drive assembly. These drive assemblies are mounted on the machine tool 14 and connected to the base 1 and the support frame 13, respectively. The corresponding drive assemblies of the base 1 and the support frame 13 can respectively drive the base 1 and the support frame 13 to move along the length of the machine tool 14. Specifically, the drive assemblies are all conventional lead screw assemblies, each including a drive motor, a lead screw, and a nut. The base 1 and the support frame 13 are slidably connected to the linear guide rail and connected to their respective drive assemblies. In the drive assembly corresponding to the base 1, the nut is sleeved on the lead screw and connected to the base 1. The drive motor is mounted on the machine tool 14 and connected to the lead screw, thereby driving the lead screw to rotate and move the base 1 on the machine tool 14. In the drive assembly corresponding to the support frame 13, a nut is sleeved on the lead screw and connected to the support frame 13, and a drive motor is mounted on the machine tool 14 and connected to the lead screw, so as to drive the lead screw to rotate and drive the support frame 13 to move on the machine tool 14.

[0034] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. A large bore, long axis profile internal cylindrical grinding apparatus characterized by: The long axis profile inner circle grinding device is located at the end of the long axis profile, and comprises a base, a long arm assembly, a grinding assembly and a driving module for driving the long arm assembly to rotate; the base is movably installed on a machine tool; the driving module is installed on the base; one end of the long arm assembly is connected with the driving module, and the other end is connected with the grinding assembly; during work, the end of the long arm assembly, on which the grinding assembly is installed, extends into the fixed inner hole of the long axis profile, the movably installed base drives the long arm assembly and the grinding assembly to move in the inner hole of the long axis profile, and the driving module drives the long arm assembly to rotate to drive the grinding assembly to grind the inner hole of the long axis profile; The driving module comprises a mounting seat, a motor, a motor force arm, a motor transmission arm, a gland one and a gland two; the mounting seat is detachably connected with the base, the motor is installed on the mounting seat and connected with the motor force arm; the driving end of the motor is connected with the motor transmission arm to realize the rotation of the motor transmission arm; the two ends of the gland one are detachably connected on the mounting seat, and the gland one can be opened or covered at the connection between the motor and the motor force arm; the two ends of the gland two are detachably connected on the mounting seat, and the gland two can be opened or covered at the motor force arm.

2. A long-hole, long-axis profile internal cylindrical grinding apparatus according to claim 1, characterized in that: The motor transmission arm is arranged inside the motor force arm and extends out of the motor force arm to be connected with the long arm assembly, and the motor transmission arm is rotatably arranged inside the motor force arm through a bearing.

3. A long-hole, long-axis profile internal cylindrical grinding apparatus according to claim 1, characterized in that: The long arm assembly comprises an extension seat and a long arm; the extension seat is connected with the motor transmission arm, one end of the long arm is detachably connected with the extension seat, and the other end is connected with the grinding assembly.

4. A long-hole, long-axis profile internal cylindrical grinding apparatus according to claim 3, characterized in that: The extension seat is provided with a tapered extension seat with an inner tapered hole, and the motor transmission arm is matched and connected with the inner tapered hole of the tapered extension seat.

5. The long-hole, long-axis profile internal cylindrical grinding apparatus according to claim 1, characterized by: The grinding assembly comprises a grinding disc and a threaded pressing plate; the grinding disc is arranged on the long arm assembly, and the threaded pressing plate is threadedly connected with the long arm assembly and presses the grinding disc.

6. A long-hole, long-axis profile internal cylindrical grinding apparatus according to claim 1, characterized in that: The long axis profile inner circle grinding device further comprises a support frame for being arranged on the machine tool and positioning the long axis profile; the support frame comprises a frame body, and a plurality of clamping assemblies are arranged on the frame body in a circumferential direction; the plurality of clamping assemblies are movably arranged on the frame body, and a space surrounded by the plurality of clamping assemblies serves as a clamping station for the long axis profile; rollers are arranged at the ends of the plurality of clamping assemblies towards the clamping station.

7. A machine tool lathe characterized by: The long axis profile inner circle grinding device comprises the large-diameter long axis profile inner circle grinding device according to any one of claims 1 to 5; the processing lathe further comprises the machine tool and a spindle mechanism for clamping the long axis profile; the spindle mechanism is arranged on the machine tool and comprises a chuck clamp for clamping the long axis profile; The base is located at the end of the long axis profile to drive the long arm assembly and the grinding assembly to extend into the inner hole of the long axis profile and move.

8. The machine lathe of claim 7, wherein: The long axis profile inner circle grinding device further comprises a support frame for being arranged on the machine tool and positioning the long axis profile; the support frame comprises a frame body, and a plurality of clamping assemblies are arranged on the frame body in a circumferential direction; the plurality of clamping assemblies are movably arranged on the frame body, and a space surrounded by the plurality of clamping assemblies serves as a clamping station for the long axis profile; rollers are arranged at the ends of the plurality of clamping assemblies towards the clamping station; and the frame body is movably connected with the machine tool.

9. The machine lathe of claim 7, wherein: The spindle mechanism further comprises a spindle box and a driving component; the spindle box is arranged on the machine tool, and the driving component is arranged inside the spindle box and connected with the chuck clamp to drive the chuck clamp to rotate and drive the long-shaft profile to rotate.

Images