Long-axis profile concentric tool and machining lathe

Abstract

The utility model relates to the technical field of machining, and provides a long-axis profile concentric tool and a machining lathe, the long-axis profile concentric tool comprises a concentric plug sleeve, a concentric taper plug and a tip cone; one end of the long-axis profile is sleeved with the concentric plug sleeve; the concentric taper plug is mounted in an inner hole in the other end of the long-axis profile; one end of the tip cone is connected with a machining lathe, and the other end abuts against the concentric cone plug; during machining, a clamping part of a machining lathe clamps the concentric plug sleeve and drives the long-axis profile to rotate, the concentric conical plug and the tip cone rotate synchronously, and concentricity machining of the long-axis profile on the machining lathe is achieved. According to the long-axis profile concentric tool, the precise concentric reference, concentricity and straightness of secondary machining of a long-axis profile can be guaranteed, and therefore the machining quality and precision of the long-axis profile are guaranteed; the concentric tool for the long-axis profile can effectively protect the surface of the long-axis profile. According to the machining lathe, secondary machining can be conducted on the long-axis profile, and it can be guaranteed that the two ends of the long-axis profile have the same concentricity after the long-axis profile is machined.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and more specifically, to a concentric tooling for long-shaft profiles and a machining lathe. Background Technology

[0002] Long drill collars, as key load-bearing and transmission components in oil drill string systems, are typically long shaft profiles with a length of 4000–6000 mm, a large outer diameter, and an internal through-hole. During manufacturing, these long shaft profiles require sequential drilling and boring of the inner bore, followed by precision turning of the outer diameter and threads. The outer diameter surface is often required to be completed in a single continuous feed to ensure that the cylindricity, straightness, and coaxiality between various features of the entire shaft meet stringent tolerance requirements.

[0003] In the existing production process, when the long shaft profile after the inner hole is machined is positioned on the machining lathe for secondary machining, due to the large length of the long shaft profile, it is difficult to establish a stable and consistent rotation reference by simply relying on the traditional method of directly clamping the two ends of the outer circle with a chuck. As a result, the concentricity and straightness between the outer circle after secondary machining and the machined inner hole, as well as between the various sections of the shaft, cannot be guaranteed.

[0004] In addition, the traditional method of directly clamping long shaft profiles with chucks is prone to clamping damage such as indentations and scratches on the profiles, affecting the appearance and quality of the long shaft profiles. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and provide a concentric tooling for long-shaft profiles. This concentric tooling can ensure the accurate concentricity, concentricity, and straightness of the long-shaft profiles during secondary processing, thereby ensuring the quality and precision of the long-shaft profile processing. This invention also provides a concentric tooling for long-shaft profiles that can effectively protect the surface of the long-shaft profiles. This invention further provides a machining lathe equipped with the concentric tooling for long-shaft profiles.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a concentric tooling for a long shaft profile, comprising a concentric sleeve, a concentric tapered plug, and a top cone; the concentric sleeve is fitted onto one end of the long shaft profile; the concentric tapered plug is installed in the inner hole at the other end of the long shaft profile; one end of the top cone is connected to a machining lathe, and the other end abuts against the concentric tapered plug; during machining, the clamping component of the machining lathe clamps the concentric sleeve and drives the long shaft profile to rotate, and the concentric tapered plug and the top cone rotate synchronously, thereby achieving concentric machining of the long shaft profile on the machining lathe.

[0007] In the above scheme, the concentric plug sleeve at one end of the long shaft profile is clamped by the clamping component of the machining lathe, and the top cone connected to the machining lathe presses against the concentric tapered plug at the other end of the long shaft profile. By utilizing the tapered core-fixing function of the concentric tapered plug, the long shaft profile can achieve the requirements of concentricity and straightness in one pass when it is processed on the machining lathe. This ensures the accurate concentricity datum, concentricity and straightness of the long shaft profile in the secondary processing, thereby ensuring the quality and accuracy of the long shaft profile processing.

[0008] In addition, the concentric plug sleeve and concentric cone plug of this utility model play a protective role for long shaft profiles, which can solve the problems of the profile being scratched, deformed or damaged due to the method of directly clamping the two ends of the outer circle by the chuck. This concentric tooling for long shaft profiles can ensure processing and effectively protect the surface of long shaft profiles.

[0009] The concentric cone plug has a engagement hole for engaging with the top cone, and the top cone engages with the engagement hole to achieve abutment with the concentric cone plug.

[0010] The connecting hole is a tapered through hole, and the tapering of the connecting hole matches the tapering of the top cone.

[0011] The concentric cone plug includes a plug portion and a locking portion that are fixedly connected; the plug portion is inserted into the inner hole of the long shaft profile, and the locking portion abuts against the end face of the long shaft profile; the locking portion has the engagement hole.

[0012] The plug portion matches the inner hole of the long shaft profile; the outer diameter of the engaging portion is larger than the inner hole diameter of the long shaft profile.

[0013] This invention achieves stable installation of the concentric cone plug in the inner hole of the long shaft profile by inserting the plug part into the inner hole of the long shaft profile and the engaging part abutting against the end face of the long shaft profile.

[0014] The plug portion has a threaded hole for easy disassembly of the concentric cone plug; the threaded hole communicates with the mating hole. When it is necessary to disassemble the concentric cone plug, a screw or other fastener can be used to connect to the threaded hole, and then the concentric cone plug can be removed by operating the screw or other fastener with a tool.

[0015] The top cone includes a cone portion and a connecting portion; one end of the connecting portion is connected to a machining lathe, and the other end is connected to the cone portion via a bearing; the cone portion abuts against a concentric cone plug; during machining, the concentric cone plug and the cone portion of the top cone rotate synchronously.

[0016] The concentric tooling for the long-shaft profile also includes a support frame for mounting on a machining lathe 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 tooling provides support and clamping for the long-shaft profile, further ensuring that the long-shaft profile remains concentric during rotation on the machining lathe.

[0017] A machining lathe includes the aforementioned concentric tooling for long shaft profiles; the machining lathe further includes a machine tool, a spindle mechanism for clamping and rotating the long shaft profile, a cutting tool mechanism for machining the long shaft profile, and a tailstock; the spindle mechanism is mounted on the machine tool; the cutting tool mechanism and the tailstock are respectively movably connected to the machine tool;

[0018] One end of the top cone is connected to the tailstock, and the other end abuts against the concentric tapered plug; the spindle mechanism includes a spindle box, a chuck fixture, and a drive component; the spindle box is mounted on the machine tool; the chuck fixture holds the concentric plug sleeve; the drive component is located inside the spindle box and connected to the chuck fixture, thereby driving the chuck fixture to rotate and causing the long shaft profile to rotate, and the concentric tapered plug and the top cone to rotate synchronously, so that the long shaft profile can be machined concentrically on the machining lathe by the cutting tool mechanism.

[0019] The concentric tooling for the long shaft profile also includes a support frame for positioning the long shaft profile; the support frame includes a frame body, and a plurality of clamping components are arranged around the frame body; the plurality of clamping components are movably arranged 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.

[0020] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0021] 1. The concentric tooling for long shaft profiles of this utility model can ensure the accurate concentricity, concentricity and straightness of the secondary processing of long shaft profiles, thereby ensuring the quality and precision of the processing of long shaft profiles.

[0022] 2. The concentric tooling for long shaft profiles of this utility model can effectively protect the surface of long shaft profiles, thereby ensuring the appearance and quality of long shaft profiles.

[0023] 3. The machining lathe of this utility model can not only perform secondary processing on long shaft profiles, but also ensure that the two ends of the long shaft profiles have the same concentricity after processing, thereby improving the processing quality and reducing the processing cost. Attached Figure Description

[0024] Figure 1This is a schematic diagram showing the connection between the concentric cone plug and the top cone and the long shaft profile in the concentric tooling of the long shaft profile of this utility model;

[0025] Figure 2 This is a schematic diagram of the connection between the concentric cone plug and the long shaft profile in the concentric tooling of the long shaft profile of this utility model;

[0026] Figure 3 This is a schematic diagram of the connection between the concentric plug sleeve and the long shaft profile in the concentric tooling of the long shaft profile of this utility model;

[0027] Figure 4 This is a schematic diagram of the machining lathe according to this utility model;

[0028] Figure 5 This is a schematic diagram of the handrail of this utility model;

[0029] Among them, 1 is a concentric plug sleeve, 2 is a concentric tapered plug, 2.1 is a plug part, 2.2 is a locking part, 3 is a top cone, 3.1 is a tapered part, 3.2 is a connecting part, 3.3 is a bearing, 4 is a long shaft profile, 5 is a mating hole, 6 is a threaded hole, 7 is a support frame, 7.1 is a frame body, 7.2 is a clamping assembly, 7.3 is a roller, 8 is a machine tool, 9 is a main spindle mechanism, 9.1 is a main spindle box, 9.2 is a chuck fixture, 10 is a cutting tool mechanism, and 11 is a tailstock. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0031] Example

[0032] like Figures 1 to 5 As shown, the concentric tooling for long shaft profiles of this utility model includes a concentric plug sleeve 1, a concentric cone plug 2, and a top cone 3. The concentric plug sleeve 1 is fitted onto one end of the long shaft profile 4, the concentric cone plug 2 is installed in the inner hole at the other end of the long shaft profile 4, and one end of the top cone 3 is connected to a machining lathe, while the other end abuts against the concentric cone plug 2. During machining, the clamping components of the machining lathe clamp the concentric plug sleeve 1 and drive the long shaft profile 4 to rotate. The concentric cone plug 2 and the top cone 3 rotate synchronously, thereby achieving concentric machining of the long shaft profile 4 on the machining lathe.

[0033] Specifically, the concentric cone plug 2 has a mating hole 5 for engaging with the top cone 3. The top cone 3 engages with the mating hole 5 to achieve abutment with the concentric cone plug 2. The mating hole 5 is a tapered through hole, and the taper of the mating hole 5 matches the taper of the top cone 3.

[0034] Furthermore, the concentric cone plug 2 includes a plug portion 2.1 and a engaging portion 2.2 that are fixedly connected. The plug portion 2.1 is inserted into the inner hole of the long shaft profile 4, and the engaging portion 2.2 abuts against the end face of the long shaft profile 4. The engaging portion 2.2 has the aforementioned engagement hole 5. The plug portion 2.1 matches the inner hole of the long shaft profile 4, and the outer diameter of the engaging portion 2.2 is larger than the inner hole diameter of the long shaft profile 4. The plug portion 2.1 of this invention has a threaded hole 6 for easy disassembly of the concentric cone plug 2, and the threaded hole 6 communicates with the engagement hole 5. When it is necessary to disassemble the concentric cone plug 2, fasteners such as screws can be used to connect to the threaded hole 6, and then tools can be used to operate the fasteners to remove the concentric cone plug 2.

[0035] The top cone 3 of this utility model includes a cone portion 3.1 and a connecting portion 3.2. One end of the connecting portion 3.2 is connected to a machining lathe, and the other end is connected to the cone portion 3.1 through a bearing 3.3. The cone portion 3.1 abuts against the concentric cone plug 2. During machining, the concentric cone plug 2 and the cone portion 3.1 of the top cone 3 rotate synchronously.

[0036] The concentric tooling for the long-shaft profile also includes a support frame 7 for mounting on a machining lathe and positioning the long-shaft profile 4. The support frame 7 includes a frame body 7.1, on which several clamping components 7.2 are circumferentially arranged. These clamping components 7.2 are threadedly connected to the frame body 7.1, and can be movably mounted on the frame body 7.1 by thread adjustment. The space enclosed by the clamping components 7.2 serves as a clamping station for the long-shaft profile 4. Rollers 7.3 are provided at the ends of the clamping components 7.2 facing the clamping station. The support frame 7 of this invention provides clamping support for the long-shaft profile 4, further ensuring that the long-shaft profile 4 remains concentric during rotation on the machining lathe.

[0037] The machining lathe of this utility model includes the above-mentioned long shaft profile concentric tooling; the machining lathe also includes a machine tool 8, a spindle mechanism 9 for clamping the long shaft profile 4 and driving the long shaft profile 4 to rotate, a cutting tool mechanism 10 for machining the long shaft profile 4, and a tailstock 11, wherein the spindle mechanism 9 is mounted on the machine tool 8, the cutting tool mechanism 10, the support frame 7 and the tailstock 11 are respectively movably connected to the machine tool 8, and one end of the top cone 3 of the long shaft profile concentric tooling is connected to the tailstock 11, and the other end abuts against the concentric cone plug 2.

[0038] In this invention, the machine tool 8 is equipped with a linear guide rail. The cutting tool mechanism 10, the support frame 7, and the tailstock 11 are each equipped with a drive assembly. Each drive assembly is mounted on the machine tool 8 and connected to the cutting tool mechanism 10, the support frame 7, and the tailstock 11, respectively. The drive assemblies corresponding to the cutting tool mechanism 10, the support frame 7, and the tailstock 11 respectively drive the cutting tool mechanism 10, the support frame 7, and the tailstock 11 to move and connect with the machine tool 8 along its length. Specifically, the drive assemblies are all conventional lead screw assemblies, each including a drive motor, a lead screw, and a nut. The cutting tool mechanism 10, the support frame 7, and the tailstock 11 are slidably connected to the linear guide rail and connected to their respective drive assemblies. In the drive assembly corresponding to the cutting tool mechanism 10, the nut is sleeved on the lead screw and connected to the cutting tool mechanism 10. The drive motor is mounted on the machine tool 8 and connected to the lead screw, thereby driving the lead screw to rotate and move the cutting tool mechanism 10 on the machine tool 8. In the drive assembly corresponding to the support frame 7, a nut is sleeved on the lead screw and connected to the support frame 7. A drive motor is mounted on the machine tool 8 and connected to the lead screw, thereby driving the lead screw to rotate and moving the support frame 7 on the machine tool 8. In the drive assembly corresponding to the tailstock 11, a nut is sleeved on the lead screw and connected to the tailstock 11. A drive motor is mounted on the machine tool 8 and connected to the lead screw, thereby driving the lead screw to rotate and moving the tailstock 11 on the machine tool 8.

[0039] The spindle mechanism 9 includes a spindle box 9.1, a chuck fixture 9.2, and a drive component. The spindle box 9.1 is mounted on the machine tool 8. The chuck fixture 9.2 holds the concentric plug sleeve 1. The drive component is located inside the spindle box 9.1 and connected to the chuck fixture 9.2, thereby driving the chuck fixture 9.2 to rotate and causing the long shaft profile 4 to rotate. The concentric tapered plug 2 and the top taper 3 rotate synchronously, enabling the long shaft profile 4 to be concentrically machined on the machining lathe by the cutting tool mechanism 10.

[0040] 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 long axis profile concentric tooling, characterized by: The long shaft profile concentric tooling includes a concentric plug sleeve, a concentric plug cone and a top cone; the concentric plug sleeve is sleeved on one end of the long shaft profile; the concentric plug cone is installed in the inner hole of the other end of the long shaft profile; one end of the top cone is connected with the lathe, and the other end is in abutment with the concentric plug cone; during machining, the clamping part of the lathe clamps the concentric plug sleeve and drives the long shaft profile to rotate, the concentric plug cone and the top cone rotate synchronously, and the concentricity of the long shaft profile is machined on the lathe.

2. A long axis profile concentric tooling as claimed in claim 1 characterised in that: The concentric plug cone is provided with an engagement hole for engaging with the top cone, and the top cone is engaged with the engagement hole to abut against the concentric plug cone.

3. A long axis profile concentric tooling as claimed in claim 2, characterised in that: The engagement hole is a through hole with a taper, and the taper of the engagement hole matches the taper of the top cone.

4. A long axis profile concentric tooling as claimed in claim 2, wherein: The concentric plug cone includes a plug part and a clamping part which are fixedly connected; the plug part is inserted into the inner hole of the long shaft profile, and the clamping part abuts against the end face of the long shaft profile; the clamping part is provided with the engagement hole.

5. A long axis profile concentric tooling as claimed in claim 4, characterised in that: The plug part matches the inner hole of the long shaft profile; the outer diameter of the clamping part is greater than the hole diameter of the inner hole of the long shaft profile.

6. A long axis profile concentric tooling as claimed in claim 4, wherein: The plug part is provided with a threaded hole for facilitating dismounting of the concentric plug cone; the threaded hole is communicated with the engagement hole.

7. The long axis profile concentric tooling of claim 1, wherein: The top cone includes a cone part and a connecting part; one end of the connecting part is connected with the lathe, and the other end is connected with the cone part through a bearing; the cone part abuts against the concentric plug cone; during machining, the concentric plug cone and the cone part of the top cone rotate synchronously.

8. The long axis profile concentric tooling of claim 1, wherein: The long shaft profile concentric tooling further includes a support frame for being arranged on the lathe and positioning the long shaft profile; the support frame includes a frame body, and a plurality of clamping assemblies are circumferentially arranged on the frame body; 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 of the long shaft profile; rollers are arranged on end portions of the plurality of clamping assemblies which face the clamping station.

9. A machine tool lathe characterized by: The lathe includes the long shaft profile concentric tooling according to any one of claims 1 to 7; the lathe further includes a machine tool, a spindle mechanism for clamping the long shaft profile and driving the long shaft profile to rotate, a tool mechanism for machining the long shaft profile and a tailstock; the spindle mechanism is arranged on the machine tool; the tool mechanism and the tailstock are movably connected with the machine tool, respectively; one end of the top cone is connected with the tailstock, and the other end abuts against the concentric plug cone; the spindle mechanism includes a spindle box, a chuck clamp and a driving part; the spindle box is arranged on the machine tool; the chuck clamp clamps the concentric plug sleeve; the driving part is arranged inside the spindle box and connected with the chuck clamp, so as to drive the chuck clamp to rotate and drive the long shaft profile to rotate, the concentric plug cone and the top cone rotate synchronously, and the long shaft profile is machined in the concentricity on the lathe through the tool mechanism.

10. The machine lathe of claim 9, wherein: The long shaft profile concentric tooling further includes a support frame for positioning the long shaft profile; the support frame includes a frame body, and a plurality of clamping assemblies are circumferentially arranged on the frame body; 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 of the long shaft profile; rollers are arranged on end portions of the plurality of clamping assemblies which face the clamping station; the frame body is movably connected with the machine tool.

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