Reference platform machining tool for deep hole drilling machining inclined hole

Abstract

The utility model relates to a reference platform machining frock for deep hole drilling and processing inclined hole, relates to deep hole drilling technical field, including tool bar, tool bar rotation is supported in positioning sleeve, the position fixed setting of positioning sleeve is equipped with the needle bearing of supporting tool bar and straight line guide sleeve, the end of tool bar is out to positioning sleeve and is connected with milling cutter, the utility model solves the problem that the traditional technology utilizes five -axis machining center to process reference surface, and then transfers work piece to deep hole drilling to process deep hole, not only has a step procedure, causes to lengthen processing period, and processing cost also increases along with it.

Description

Technical Field

[0001] This utility model relates to the field of deep hole drilling technology, specifically to a reference platform machining tooling for deep hole drilling of inclined holes. Background Technology

[0002] When drilling inclined holes (such as inclined deep holes in industrial parts) in deep hole drilling, because the inclined hole has an angular deviation (not perpendicular to the workpiece surface), it is necessary to first machine a flat reference platform (yellow surface) in the area to be machined on the workpiece as the alignment reference for subsequent inclined hole machining.

[0003] The cutting force direction and tool structure of drilling and milling are completely different. The original deep hole drill tool cannot bear the transverse cutting force of milling. Therefore, a five-axis machining center is needed to process this datum. After machining the datum surface with the five-axis machining center, the workpiece is transferred to the deep hole drill for machining the deep hole.

[0004] As existing devices are used, the shortcomings of this technology have gradually become apparent, mainly in the following aspects:

[0005] Because machining the reference surface using a five-axis machining center and then transferring the workpiece to a deep hole drill for machining deep holes adds an extra step, which prolongs the machining cycle and increases the machining cost.

[0006] As can be seen from the above, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0007] To address the shortcomings of existing technologies, this utility model provides a reference platform machining fixture for deep hole drilling of inclined holes. This solves the problem that in traditional technologies, after machining the reference surface using a five-axis machining center, the workpiece is transferred to a deep hole drill for machining deep holes, which not only adds an extra step but also prolongs the machining cycle and increases the machining cost.

[0008] To achieve the above objectives, the present invention provides the following technical solution.

[0009] A reference platform for machining inclined holes in deep hole drilling includes a tool holder, which is rotatably supported on a positioning sleeve.

[0010] The positioning sleeve is fixedly positioned, and the positioning sleeve contains a needle roller bearing and a linear guide sleeve to support the tool holder.

[0011] The end of the tool holder extends into the positioning sleeve and is connected to a milling cutter.

[0012] As an optimized solution, the needle roller bearing and the linear guide sleeve are arranged side by side along the axial direction of the positioning sleeve.

[0013] As an optimized solution, the outer ring of the needle roller bearing and the inner ring of the positioning sleeve are interference-fitted.

[0014] As an optimized solution, the outer ring of the linear guide sleeve and the inner ring of the positioning sleeve are interference-fitted.

[0015] As an optimized solution, the needle roller bearing is located at one end close to the milling cutter.

[0016] As an optimized solution, a connecting plate is provided on the outer wall of the positioning sleeve.

[0017] As an optimized solution, the connecting plate is provided with several fixing holes.

[0018] As an optimized solution, a fixing groove is coaxially formed on the end of the tool holder, and the milling cutter is inserted into the fixing groove.

[0019] As an optimized solution, a threaded hole communicating with the fixing groove is provided on the outer wall of the tool holder, and a screw plug is threaded into the threaded hole, with the end of the screw plug abutting against the milling cutter.

[0020] As an optimized solution, two threaded holes are arranged side by side along the axial direction of the tool holder, and each threaded hole is threaded with a plug.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] By removing the original drill bit from the tool holder and replacing it with this tooling structure, milling of the platform can be achieved. This expands the single drilling function of the deep hole drill to the function of a "milling reference platform", eliminating the extra steps of the five-axis machining center and achieving cost reduction and efficiency improvement.

[0023] The positioning sleeve ensures that the tool holder is perpendicular to the workpiece surface through needle roller bearings and linear guide sleeves, providing an initial reference for milling.

[0024] The machine tool drives the tool holder to move downward along the Z-axis, and the milling cutter contacts the workpiece surface. By controlling the Z-axis feed, the initial depth of the reference platform is milled out.

[0025] X / Y translation (area expansion): After milling to the preset depth in the Z direction, the machine tool drives the entire device to translate along the X and Y axes, and the milling cutter mills a flat platform on the workpiece surface;

[0026] During operation, the linear guide sleeve restricts the radial offset of the tool holder, while the needle roller bearing bears the lateral torque generated by milling, preventing the tool holder from bending due to lateral forces. The front end of the tool holder cooperates with the needle roller bearing and the linear guide sleeve, and the needle roller bearing can achieve a larger lateral torque.

[0027] After the reference platform milling is completed, the machine tool drive device is reset upward along the Z-axis, the device is removed and the original deep hole drill bit is replaced;

[0028] Using the newly milled platform as the alignment reference, the deep hole drill can machine the inclined hole at a preset angle, eliminating the need for a five-axis machining center, thus shortening the overall machining cycle and reducing costs. Attached Figure Description

[0029] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0030] Figure 1 This is a schematic diagram of the structure of this utility model;

[0031] Figure 2 This is a schematic diagram of the exploded structure of this utility model.

[0032] In the diagram: 1-tool holder; 2-locating sleeve; 3-linear guide sleeve; 4-milling cutter; 5-workpiece; 6-reference platform; 7-milling cutter; 8-threaded hole; 9-fixed groove; 10-needle roller bearing; 11-connecting plate; 12-fixed hole. Detailed Implementation

[0033] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0034] like Figure 1 and Figure 2 As shown, the deep hole drilling rig for inclined holes uses a reference platform machining fixture, including a tool holder 1, which is rotatably supported on a positioning sleeve 2.

[0035] The positioning sleeve 2 is fixedly positioned, and the positioning sleeve 2 contains a needle roller bearing 10 and a linear guide sleeve 3 to support the tool holder 1.

[0036] The end of the tool holder 1 extends into the positioning sleeve 2 and is connected to a milling cutter.

[0037] The needle roller bearing 10 and the linear guide sleeve 3 are arranged side by side along the axial direction of the positioning sleeve 2.

[0038] The outer ring of the needle roller bearing 10 is interference-fitted with the inner ring of the locating sleeve 2.

[0039] The outer ring of the linear guide sleeve 3 and the inner ring of the positioning sleeve 2 are interference-fitted.

[0040] The needle roller bearing is located at the end closest to the milling cutter.

[0041] The outer wall of the positioning sleeve 2 is provided with a connecting plate 11, which is connected to the workpiece 5 positioning assembly on the worktable of the deep hole drilling machine.

[0042] The upper circumference of the connecting plate 11 is provided with several fixing holes 12.

[0043] A fixing groove 9 is coaxially provided on the end of the tool holder 1, and the milling cutter is inserted into the fixing groove 9.

[0044] The outer wall of the tool holder 1 is provided with a threaded hole 8 that connects to the fixing groove 9. A screw plug is connected to the threaded hole 8 by a thread, and the end of the screw plug abuts against the milling cutter.

[0045] Two threaded holes 8 are provided side by side along the axial direction of the tool holder 1, and each threaded hole 8 is threaded with a plug.

[0046] The structure of the deep hole drill body is common knowledge to those skilled in the art and is not an innovation of this solution, so it will not be elaborated here.

[0047] The working principle of this device is as follows:

[0048] The original drill bit is removed from the tool holder 1 and replaced by this tooling structure, which enables milling of the platform. This expands the single drilling function of the deep hole drill to the function of "milling reference platform 6", eliminating the extra process of the five-axis machining center and achieving cost reduction and efficiency improvement.

[0049] The positioning sleeve 2 ensures that the tool holder 1 is perpendicular to the surface of the workpiece 5 through the needle roller bearing 10 and the linear guide sleeve 3, providing an initial reference for milling;

[0050] The machine tool drives the tool holder 1 to move downward along the Z-axis, and the milling cutter contacts the surface of the workpiece 5. By controlling the Z-axis feed, the initial depth of the reference platform 6 is milled out.

[0051] X / Y translation (area expansion): After milling to the preset depth in the Z direction, the machine tool drives the entire device to translate along the X and Y axes, and the milling cutter mills a flat platform on the surface of the workpiece 5.

[0052] During the operation, the linear guide sleeve 3 restricts the radial displacement of the tool holder 1, and the needle roller bearing 10 bears the lateral torque generated by milling, preventing the tool holder 1 from bending due to lateral force; the front end of the tool holder 1 cooperates with the needle roller bearing 10 and the linear guide sleeve 3, and the needle roller bearing 10 can achieve a large lateral torque;

[0053] After the reference platform 6 is milled, the machine tool drive device is reset upward along the Z-axis, the device is removed and the original deep hole drill bit is replaced;

[0054] Using the newly milled platform as the alignment reference, the deep hole drill can machine the inclined hole at a preset angle, eliminating the need for a five-axis machining center, thus shortening the overall machining cycle and reducing costs.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A reference platform for machining inclined holes using deep hole drilling, characterized in that: Includes a tool holder (1), which is rotatably supported on a positioning sleeve (2). The positioning sleeve (2) is fixedly positioned, and the positioning sleeve (2) is provided with a needle roller bearing (10) and a linear guide sleeve (3) to support the tool bar (1). The end of the tool holder (1) extends to the positioning sleeve (2) and is connected to a milling cutter.

2. The reference platform machining fixture for deep hole drilling of inclined holes according to claim 1, characterized in that: The needle roller bearing (10) and the linear guide sleeve (3) are arranged side by side along the axial direction of the positioning sleeve (2).

3. The reference platform machining fixture for deep hole drilling of inclined holes according to claim 1, characterized in that: The outer ring of the needle roller bearing (10) and the inner ring of the positioning sleeve (2) are interference-fitted.

4. The reference platform machining fixture for deep hole drilling of inclined holes according to claim 1, characterized in that: The outer ring of the linear guide sleeve (3) and the inner ring of the positioning sleeve (2) are interference-fitted.

5. The reference platform machining fixture for deep hole drilling of inclined holes according to claim 1, characterized in that: The needle roller bearing is located at one end near the milling cutter.

6. The reference platform machining fixture for deep hole drilling of inclined holes according to claim 1, characterized in that: The outer wall of the positioning sleeve (2) is provided with a connecting plate (11).

7. The reference platform machining fixture for deep hole drilling of inclined holes according to claim 6, characterized in that: The connecting plate (11) is provided with a number of fixing holes (12) around its upper perimeter.

8. The reference platform machining fixture for deep hole drilling of inclined holes according to claim 1, characterized in that: A fixing groove (9) is coaxially provided on the end of the tool holder (1), and the milling cutter is inserted into the fixing groove (9).

9. The reference platform machining fixture for deep hole drilling of inclined holes according to claim 8, characterized in that: The outer wall of the tool holder (1) is provided with a threaded hole (8) that connects to the fixed groove (9). A screw plug is threaded into the threaded hole (8), and the end of the screw plug abuts against the milling cutter.

10. The reference platform machining fixture for deep hole drilling of inclined holes according to claim 9, characterized in that: Two threaded holes (8) are arranged side by side along the axial direction of the tool holder (1), and each threaded hole (8) is threaded with a plug.

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