Chuck connector for processing pre-bent shell

Abstract

The utility model relates to the technical field of machining, in particular to a chuck connector for machining a pre-bent shell. The problems that when a pre-bent shell is clamped through an existing method, the clamping force is not uniform, consequently, machined threads do not reach the standard, the angle error of machined outer circles is large, and unqualified products are prone to occurring are solved. The connector comprises a reference surface, a positioning surface and an angle compensation surface, the reference surface is parallel to the axis of the to-be-machined thread of the pre-bent shell; the reference surface is vertical to the positioning surface; the positioning surface is clamped with a bulge on the back surface of the three-jaw chuck; an included angle is formed between the angle compensation surface and the positioning surface; and the angle compensation surface is in contact with the end surface of the pre-bending shell. According to the clamping mode, the to-be-machined end of the thread of the pre-bent shell is parallel to the axis of the three-jaw chuck, the pre-tightening force of the three jaws is the same, the stability in the machining process is improved, it is guaranteed that the positioning reference is not changed in the machining process, and therefore the product quality is improved, the clamping operation is simple, and the machining efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a chuck connector for processing a pre-bent shell. Background Art

[0002] Screw drill is a downhole power drill widely used in oil drilling. It is a tool that converts the pressure energy of the circulating medium into mechanical energy to drive the drill bit to rotate and cut the rock. When the drilling operation requires orientation, deflection, and stabilization, screw drill is often needed to provide downhole power. The pre-bent shell plays a role in orientation and deflection in the operation of the screw drill. It is connected to other working parts by threads, so the processing quality of the thread is very important. The deflection rate is achieved by the accuracy of the angle of the pre-bent shell itself.

[0003] The outer circle, inner hole and external thread of the pre-bent shell need to be processed after the angle is made, which makes it impossible to use an ordinary self-centering three-jaw chuck to clamp the workpiece. A four-jaw chuck is needed to clamp the workpiece after angle compensation. The workpiece needs to be positioned before each clamping, which is cumbersome and labor-intensive. In addition, the contact surfaces of the four jaws are of different sizes (some jaws are in surface contact, some are in line contact or point contact), resulting in uneven clamping force. The datum of the workpiece during processing will change due to insufficient clamping force, resulting in substandard threads and large pre-bending angle errors after outer circle processing, which makes it very easy to produce defective products. Utility Model Content

[0004] The utility model provides a chuck connector for processing a pre-bent shell, so as to alleviate the problem that when the pre-bent shell is clamped in the existing method, the uneven clamping force causes the processing thread to be substandard, the processing outer circle angle error is large, and defective products are easily produced.

[0005] In order to alleviate the above technical problems, the technical solution provided by the utility model is:

[0006] This solution provides a chuck connector for processing a pre-bent shell.

[0007] Including reference surface, positioning surface and angle compensation surface;

[0008] The reference plane is parallel to the axis of the pre-bent shell where the thread is to be processed;

[0009] The reference plane is perpendicular to the positioning plane;

[0010] The positioning surface is engaged with the protrusion on the back of the three-jaw chuck;

[0011] There is an included angle between the angle compensation surface and the positioning surface;

[0012] The angle compensation surface contacts the end surface of the pre-bent shell.

[0013] Furthermore,

[0014] The positioning surface is detachably connected to the three-jaw chuck.

[0015] Furthermore,

[0016] Also includes a first boss;

[0017] The first boss is arranged on a side of the chuck connector away from the pre-bent housing;

[0018] The outer diameter of the first boss is smaller than the outer diameter of the positioning surface.

[0019] Furthermore,

[0020] Also includes a second boss;

[0021] The second boss is arranged on a side of the first boss away from the pre-bent housing;

[0022] The outer diameter of the second boss is smaller than the outer diameter of the first boss.

[0023] Furthermore,

[0024] The surface of the positioning surface is provided with anti-slip grooves.

[0025] Furthermore,

[0026] The angle compensation surface includes a layer of elastic material;

[0027] The elastic material layer is arranged on the surface of the angle compensation surface and is detachably connected to the angle compensation surface.

[0028] Furthermore,

[0029] The elastic material layer is rubber or polymer.

[0030] Furthermore,

[0031] Anti-skid knurling is provided on the surfaces of the first boss and the second boss.

[0032] The beneficial effects of the utility model are analyzed as follows:

[0033] This clamping method makes the end of the pre-bent shell thread to be processed parallel to the axis of the three-jaw chuck, and the preload force of the three jaws is the same, which improves the stability during the processing and ensures that the positioning reference remains unchanged during the processing, thereby improving product quality. In addition, the clamping operation is simple and the processing efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the related technologies, the drawings required for use in the specific implementation methods or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0035] Figure 1 This is a schematic diagram of the installation of the chuck connector;

[0036] Figure 2 It is a schematic diagram of the axial side of the chuck connector;

[0037] Figure 3 A cross-sectional schematic diagram of a chuck connector.

[0038] icon:

[0039] 100-reference plane;

[0040] 200- positioning surface;

[0041] 300-angle compensation surface;

[0042] 400-pre-bent shell;

[0043] 500-three-jaw chuck;

[0044] 600-first boss;

[0045] 700-Second boss. DETAILED DESCRIPTION

[0046] When using a four-jaw chuck to clamp the pre-bent shell 400, the positioning of the workpiece is complicated, the operating steps are cumbersome, and the contact surface of each jaw is of different sizes, resulting in uneven clamping force. During the processing, the reference of the workpiece will change due to insufficient clamping force, resulting in substandard threads and large angle errors after external circle processing, which easily leads to defective products.

[0047] In view of this, if Figures 1 to 3 As shown, the present solution provides a chuck connector for machining a pre-bent shell, comprising a reference surface 100, a positioning surface 200 and an angle compensation surface 300;

[0048] The reference plane 100 is parallel to the axis of the pre-bent shell 400 where the threads are to be processed;

[0049] The reference surface 100 is perpendicular to the positioning surface 200;

[0050] The positioning surface 200 is engaged with the protrusion on the back of the three-jaw chuck 500;

[0051] There is an included angle between the angle compensation surface 300 and the positioning surface 200;

[0052] The angle compensation surface 300 contacts the end surface of the pre-bent housing 400 .

[0053] Specifically, after the three-jaw chuck 500 is engaged with the positioning surface 200, the end of the pre-bent shell 400 away from the thread to be processed is inserted into the three-jaw chuck 500, and connected with the angle compensation surface 300, the end of the pre-bent shell 400 that cooperates with the angle compensation surface 300 is rotated to make the end of the pre-bent shell 400 with the thread to be processed parallel to the reference surface 100, and subsequent processing operations can be carried out; the angle of the angle compensation surface 300 is set according to the bending angle of the pre-bent shell 400, and no specific numerical value is limited in this scheme.

[0054] This clamping method makes the threaded end of the pre-bent shell 400 to be processed parallel to the axis of the three-jaw chuck 500, and the pre-tightening force of the three jaws is the same, which improves the stability during the processing and ensures that the positioning reference remains unchanged during the processing, thereby improving product quality. In addition, the clamping operation is simple and the processing efficiency is improved.

[0055] Preferably, the positioning surface 200 and the three-jaw chuck 500 are detachably connected. On the one hand, during long-term use, the angle compensation surface 300 will wear and affect the accuracy of the angle, and needs to be replaced regularly. On the other hand, for pre-bent shells 400 with different angles, the angle compensation surface 300 of the corresponding angle can be replaced to cooperate with the processing, without the need to prepare multiple three-jaw chucks 500 and chuck connectors for splicing and backup, which saves the use of equipment and reduces costs.

[0056] like Figure 3 As shown, it also includes a first boss 600;

[0057] The first boss 600 is disposed on a side of the chuck connector away from the pre-bent housing 400;

[0058] The outer diameter of the first boss 600 is smaller than the outer diameter of the positioning surface 200;

[0059] Also includes a second boss 700;

[0060] The second boss 700 is disposed on a side of the first boss 600 away from the pre-bending housing 400;

[0061] The outer diameter of the second boss 700 is smaller than the outer diameter of the first boss 600 .

[0062] Specifically, the first boss 600 and the second boss 700 are used to connect to external equipment, such as a machine tool spindle. The first boss 600 and the second boss 700 have different outer diameters. A suitable chuck can be selected according to the size of the machine tool to connect to the first boss 600 or the second boss 700. Of course, in order to adapt to the size of the chucks of more processing equipment, more bosses can be set.

[0063] Preferably, the surface of the positioning surface 200 is provided with anti-slip grooves or other anti-slip structures to facilitate the installation of the three-jaw chuck 500 and improve the convenience of workers' operation; the surfaces of the first boss 600 and the second boss 700 are provided with anti-slip knurling, which can increase the friction of the contact surface and avoid loosening when connected to the machine tool, thereby improving the stability during machining; in addition, in order to improve the service life of the chuck connector, the angle compensation surface 300 is also provided with an elastic material layer, and the elastic material layer is rubber or polymer. Each time it is docked with the pre-bent shell 400, the elastic material layer is in direct contact with the pre-bent shell 400 to avoid damage to the angle compensation surface 300. Of course, the service life of the elastic material layer itself is lower than that of the angle compensation surface 300, but its price is much lower than that of the chuck connector. Therefore, the elastic material layer can be set on the surface of the angle compensation surface 300 in a detachable connection manner such as a set or plug-in, and replaced in time after damage occurs.

[0064] This solution has at least the following beneficial effects:

[0065] 1. Improve processing accuracy:

[0066] The use of a three-jaw chuck 500 and a specific angle compensation surface 300 can ensure that the pre-bent shell 400 is parallel to the axis of the chuck. This alignment method effectively reduces substandard thread processing and angle errors in external circle processing caused by uneven clamping.

[0067] The design of the reference surface 100 , the positioning surface 200 and the angle compensation surface 300 ensures stability during the machining process, thereby maintaining consistent machining quality.

[0068] 2. Easy to operate:

[0069] By simplifying workpiece positioning and reducing operation complexity, clamping efficiency is improved, which is particularly critical for saving time costs in mass production.

[0070] The detachable design allows for quick replacement or adjustment of the chuck connector to accommodate pre-bent housings 400 of different angles, thereby increasing operational flexibility and adaptability.

[0071] 3. Cost-effectiveness:

[0072] The replaceable design of the angle compensation surface 300 reduces the replacement cost of the entire equipment. Only the consumable parts need to be replaced. This modular design reduces long-term maintenance costs.

[0073] The introduction of the elastic material layer further protects the angle compensation surface 300 and prolongs its service life. At the same time, due to the low material cost, the overall replacement cost is kept low.

[0074] 4. Improve device compatibility and stability:

[0075] The design of the first boss 600 and the second boss 700 allows connection with machine tool spindles of different sizes, providing better equipment compatibility.

[0076] The anti-slip groove and knurling design increase the stability of the device when connected to the machine tool, avoiding the impact of looseness on processing accuracy.

[0077] In summary, this solution not only improves processing quality and efficiency, but also reduces operation and maintenance costs through design innovation, and improves the flexibility and stability of mechanical processing.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of each embodiment of the utility model.

Claims

1. A chuck connector for processing a pre-bent shell, characterized in that: It comprises a reference surface (100), a positioning surface (200) and an angle compensation surface (300); The reference plane (100) is parallel to the axis of the pre-bent shell (400) where the thread is to be processed; The reference surface (100) is perpendicular to the positioning surface (200); The positioning surface (200) is engaged with a protrusion on the back of the three-jaw chuck (500); An included angle is formed between the angle compensation surface (300) and the positioning surface (200); The angle compensation surface (300) contacts the end surface of the pre-bent shell (400).

2. The chuck connector for processing a pre-bent shell according to claim 1, characterized in that: The positioning surface (200) is detachably connected to the three-jaw chuck (500).

3. The chuck connector for processing a pre-bent housing according to claim 2, characterized in that: Also includes a first boss (600); The first boss (600) is arranged on a side of the chuck connector away from the pre-bent housing (400); The outer diameter of the first boss (600) is smaller than the outer diameter of the positioning surface (200).

4. The chuck connector for processing a pre-bent housing according to claim 3, characterized in that: Also includes a second boss (700); The second boss (700) is arranged on a side of the first boss (600) away from the pre-bending housing (400); The outer diameter of the second boss (700) is smaller than the outer diameter of the first boss (600).

5. The chuck connector for processing a pre-bent housing according to claim 4, characterized in that: The surface of the positioning surface (200) is provided with anti-slip grooves.

6. The chuck connector for processing a pre-bent housing according to claim 5, characterized in that: The angle compensation surface (300) comprises an elastic material layer; The elastic material layer is arranged on the surface of the angle compensation surface (300) and is detachably connected to the angle compensation surface (300).

7. The chuck connector for processing a pre-bent housing according to claim 6, characterized in that: The elastic material layer is rubber or polymer.

8. The chuck connector for processing a pre-bent housing according to claim 7, characterized in that: Anti-slip knurling is provided on the surfaces of the first boss (600) and the second boss (700).

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