Large diesel engine body oil duct machining equipment

Abstract

The invention discloses large diesel engine body oil duct machining equipment which comprises a numerical control sliding table, a power main shaft, a boring rod, a cutter and a tool clamp, the power main shaft is slidably connected to the numerical control sliding table, one end of the boring rod is connected to the power main shaft, the cutter comprises a cutter bar, a guide sleeve, a bearing and a blade, and one end of the cutter bar is connected to the other end of the boring rod; the blade is mounted at the other end of the cutter bar, the guide sleeve is sleeved on the periphery of the cutter bar through a bearing, and the outer diameter of the guide sleeve is smaller than that of the oil passage hole. In the general machining process, when a blade encounters a cross hole, due to the fact that the blade does not completely cut in the circumferential direction, the cutter bar deviates to the non-cutting direction under the lateral cutting force, and deflection occurs when the oil duct hole is machined, the guide sleeve can use the machined oil duct hole as a support, and due to the effect of the bearing, the cutter bar is fed in the axial direction, so that the machining precision is greatly improved. And the guide sleeve is only fed axially and does not participate in rotation, so that the machining straightness of an incomplete cutting part can be ensured, and the machining precision of the oil duct hole can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of diesel engine processing, and in particular to a large diesel engine body oil channel processing device. Background Art

[0002] For large diesel engines, the oil passages in the engine body generally run through the entire length of the engine body and are deep holes with an ultra-long-diameter ratio.

[0003] At present, the main processing method for the engine oil passage is: first cast into a solid body, and then use the ejector drilling to process. Due to the excessive wall thickness of the engine body, the casting of the solid structure is prone to defects such as loose internal structure. In addition, in the existing technology, a pre-hole is cast on the engine body, and then the pre-hole is expanded by an ordinary reaming tool to process the engine oil passage. However, the existing processing method still cannot ensure the accurate processing of the oil passage with a large aspect ratio and cross holes.

[0004] Therefore, how to improve the machining accuracy of the engine body oil channel is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0005] The purpose of the present invention is to provide a large diesel engine body oil channel processing equipment, which can effectively improve the processing accuracy of the body oil channel.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A large diesel engine body oil channel processing equipment, including: a CNC slide, a power spindle, a boring bar, a tool and a fixture, the power spindle is slidably connected to the CNC slide, one end of the boring bar is connected to the power spindle, the tool includes a tool rod, a guide sleeve, a bearing and a blade, one end of the tool rod is connected to the other end of the boring bar, the blade is installed on the other end of the tool rod, the guide sleeve is arranged on the outer periphery of the tool rod through the bearing sleeve, the fixture is used to clamp the body to be processed, the body is provided with a cross hole that intersects with the oil channel hole to be processed, the guide sleeve is used to be placed in the oil channel hole that has been processed in the body, the guide sleeve is used to support the rotation of the tool rod, and can follow the axial movement of the tool rod.

[0008] In some embodiments, the length of the guide sleeve is greater than the diameter of the cross hole.

[0009] In some embodiments, at least a portion of the outer circumference of the guide sleeve is provided with a wear-resistant layer.

[0010] In some embodiments, the end of the tool rod away from the boring bar is a mounting section, the outer diameter of the mounting section is smaller than the outer diameter of the tool rod body, the guide sleeve is arranged on the mounting section through the bearing sleeve, and the outer diameter of the guide sleeve is larger than the outer diameter of the tool rod body.

[0011] In some embodiments, a plurality of bearings distributed along the axial direction are provided between the guide sleeve and the tool rod.

[0012] In some embodiments, a bearing is respectively disposed inside each of the two ends of the guide sleeve.

[0013] In some embodiments, the tool bar and the boring bar are provided with channels for the circulation of cutting fluid.

[0014] In some embodiments, the CNC slide is provided with an auxiliary support for supporting the boring bar.

[0015] In some embodiments, the large diesel engine body oil channel processing equipment also includes a platform, the tooling fixture is installed on the platform, a guide frame is provided on the platform, a guide hole is provided on the guide frame, and the boring bar is axially slidably connected to the guide hole.

[0016] Compared with the prior art, the above technical solution has the following advantages:

[0017] The present invention provides a large diesel engine body oil channel processing equipment, including: a numerical control slide, a power spindle, a boring bar, a tool and a fixture, the power spindle is slidably connected to the numerical control slide, one end of the boring bar is connected to the power spindle, the tool includes a tool bar, a guide sleeve, a bearing and a blade, one end of the tool bar is connected to the other end of the boring bar, the blade is installed on the other end of the tool bar, the guide sleeve is arranged on the outer periphery of the tool bar through a bearing sleeve, and the outer diameter of the guide sleeve is smaller than the outer diameter of the oil channel hole. During the processing, when the blade encounters a cross hole, due to the incomplete cutting of the blade in the circumferential direction, under the action of the lateral cutting force, the tool bar will deviate to the direction of not cutting, resulting in deflection when processing the oil channel hole, and the guide sleeve of the present invention can use the processed oil channel hole as a support, and due to the effect of the bearing, with the axial feeding of the tool bar, the guide sleeve only feeds axially and does not participate in rotation, which can ensure the processing straightness of the incomplete cutting part, so the processing accuracy of the oil channel hole can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0019] Figure 1 A schematic structural diagram of a large diesel engine oil passage processing device provided by a specific embodiment of the present invention;

[0020] Figure 2 A schematic diagram of the partial structure of a tool for a large diesel engine body oil passage processing device provided in a specific embodiment of the present invention.

[0021] The reference numerals are as follows:

[0022] 100-machine body, 101-oil channel hole, 102-cross hole;

[0023] 10-CNC slide, 11-auxiliary support;

[0024] 20-power spindle;

[0025] 30-boring bar;

[0026] 40-tool, 41-tool bar, 411-installation section, 412-channel, 42-guide sleeve, 421-wear-resistant layer, 43-bearing, 44-blade;

[0027] 50-Fixture and fixture;

[0028] 60- platform, 61- guide frame. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Please refer to Figure 1 and Figure 2 .

[0031] The embodiment of the present invention provides a large diesel engine body oil channel processing equipment, including: a CNC slide 10, a power spindle 20, a boring bar 30, a tool 40 and a fixture 50, the power spindle 20 is slidably connected to the CNC slide 10, one end of the boring bar 30 is connected to the power spindle 20, the power spindle 20 can drive the boring bar 30 to rotate, and the CNC slide 10 can realize the forward and backward movement of the power spindle 20 to realize the feeding and retracting operation of the tool 40. Figure 2As shown, the tool 40 includes a tool bar 41, a guide sleeve 42, a bearing 43 and a blade 44. One end of the tool bar 41 is connected to the other end of the boring bar 30. One end of the tool bar 41 is preferably detachably connected to the other end of the boring bar 30, for example, it can be clamped. The blade 44 is installed on the other end of the tool bar 41, for example, connected by bolts, so as to facilitate the replacement of the blade 44. The guide sleeve 42 is sleeved on the outer periphery of the tool bar 41 through the bearing 43, and the outer diameter of the guide sleeve 42 is smaller than the outer diameter of the oil passage hole 101. Before processing, the machine body 100 to be processed is first clamped by the fixture 50, and then the oil passage hole 101 is gradually processed in the reserved hole on the machine body 100 by the blade 44, that is, the blade 33 can realize the expansion of the reserved hole during processing to form the oil passage hole 101. The guide sleeve 42 can move axially with the tool bar 41. With the feeding of the tool bar 41, the guide sleeve 42 will move into the oil passage hole 101 that has been processed in the machine body 100. In the specific processing process, when the blade 44 encounters the cross hole 102, the blade 44 does not completely cut in the circumferential direction, and the tool bar 41 will deviate to the direction of not cutting, resulting in deflection when processing the oil passage hole 101, so that the outer wall of the guide sleeve 42 and the inner wall of the processed oil passage hole 101 are in contact with each other. At this time, the guide sleeve 42 will not rotate with the tool bar 41. Therefore, the guide sleeve 42 can support the rotation of the tool bar 41 under the action of the bearing 43, thereby preventing the tool bar 41 from further swinging, so that the processing accuracy of the oil passage hole 101 can be improved. That is, the guide sleeve 42 of the present invention can use the processed oil passage hole 101 as a support, and due to the effect of the bearing 43, as the tool bar 41 is axially fed, the guide sleeve 42 is only axially fed and does not participate in rotation, which can ensure the straightness of the incomplete cutting part, so as to improve the processing accuracy of the oil passage hole 101. In the process of processing, since the guide sleeve 42 mainly moves axially, the friction between the guide sleeve 42 and the inner wall of the processed oil passage hole 101 is small, which can ensure the processing quality of the oil passage hole 101 and the service life of the tool 40.

[0032] In some embodiments, the length of the guide sleeve 42 is greater than the diameter of the cross hole 102. For example, the length of the guide sleeve 42 is preferably between 1.5 times and 2 times the diameter of the cross hole 102, so that the guide sleeve 42 can completely cover the cross hole 102 when passing through the cross hole 102, thereby ensuring the support stability of the guide sleeve 42.

[0033] In some embodiments, at least part of the outer circumference of the guide sleeve 42 is provided with a wear-resistant layer 421. For example, a circle of wear-resistant layer 421 can be respectively provided in the middle section, the front section and the rear section of the outer circumference of the guide sleeve 42. The wear-resistant layer 421 is preferably made of polytetrafluoroethylene. The wear-resistant layer 421 can be integrally formed with the guide sleeve 42, and can also be embedded in the annular groove provided on the outer circumference of the guide sleeve 42.

[0034] In some embodiments, the end of the tool rod 41 away from the boring bar 30 is a mounting section 411, and the outer diameter of the mounting section 411 is smaller than the outer diameter of the body of the tool rod 41, that is, the front section of the tool rod 41 is a stepped shaft structure, and the guide sleeve 42 is sleeved on the mounting section 411 through a bearing 43. The outer diameter of the guide sleeve 42 is larger than the outer diameter of the body of the tool rod 41. The shoulder structure of the stepped shaft can play an axial limiting role on the guide sleeve 42 to prevent the guide sleeve 42 from axially moving relative to the tool rod 41, thereby ensuring the accuracy of the installation position of the guide sleeve 42.

[0035] In some embodiments, a plurality of bearings 43 distributed along the axial direction are provided between the guide sleeve 42 and the knife rod 41 to ensure the rotation stability of the knife rod 41 relative to the guide sleeve 42. For example, a bearing 43 is provided inside each of the two ends of the guide sleeve 42.

[0036] In some embodiments, a channel 412 for the circulation of cutting fluid is provided in the tool rod 41 and the boring bar 30. The cutting fluid transported by the cooling device can enter the interior of the boring bar 30 through the power spindle 20, and then enter the cutting part of the blade 44 through the interior of the tool rod 41. The cutting chips can be taken away by the cutting fluid and the tool 40 can be cooled.

[0037] In some embodiments, Figure 1 As shown, the CNC slide 10 is provided with an auxiliary support 11 for supporting the boring bar 30, wherein the auxiliary support 11 includes a bracket installed on the CNC slide 10, the bracket is provided with a support hole, the boring bar 30 is passed through the support hole, and the boring bar 30 can rotate and move axially relative to the support hole to ensure the operating stability of the boring bar 30.

[0038] In some embodiments, Figure 1 As shown, the large diesel engine body 100 oil channel processing equipment also includes a platform 60, the tooling fixture 50 is installed on the platform 60, a guide frame 61 is provided on the platform 60, a guide hole is provided on the guide frame 61, the boring bar 30 is axially slidably connected to the guide hole, the guide hole and the support hole are coaxially arranged, and the boring bar 30 can be further supported by the guide hole to further ensure the running stability of the boring bar 30.

[0039] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0040] The above is a detailed introduction to a large diesel engine oil channel processing equipment provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, the present invention can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A large diesel engine oil channel processing equipment, characterized in that: include: A numerical control slide (10), a power spindle (20), a boring bar (30), a tool (40) and a fixture (50), wherein the power spindle (20) is slidably connected to the numerical control slide (10), one end of the boring bar (30) is connected to the power spindle (20), the tool (40) comprises a tool rod (41), a guide sleeve (42), a bearing (43) and a blade (44), one end of the tool rod (41) is connected to the other end of the boring bar (30), and the blade (44) is mounted on the other end of the tool rod (41). The guide sleeve (42) is sleeved on the outer circumference of the tool rod (41) through the bearing (43); the fixture (50) is used to clamp the machine body (100) to be processed; a cross hole (102) is provided in the machine body (100) and intersects with the oil channel hole (101) to be processed; the guide sleeve (42) is used to be placed in the oil channel hole (101) that has been processed in the machine body (100); the guide sleeve (42) is used to support the rotation of the tool rod (41) and can move axially with the tool rod (41).

2. The large diesel engine oil passage processing equipment according to claim 1, characterized in that: The length of the guide sleeve (42) is greater than the diameter of the cross hole (102).

3. The large diesel engine oil channel processing equipment according to claim 1, characterized in that: At least a partial section of the outer circumference of the guide sleeve (42) is provided with a wear-resistant layer (421).

4. The large diesel engine oil passage processing equipment according to claim 1, characterized in that: The end of the tool rod (41) away from the boring bar (30) is a mounting section (411), the outer diameter of the mounting section (411) is smaller than the outer diameter of the body of the tool rod (41), the guide sleeve (42) is sleeved on the mounting section (411) via the bearing (43), and the outer diameter of the guide sleeve (42) is larger than the outer diameter of the body of the tool rod (41).

5. The large diesel engine oil passage processing equipment according to claim 1, characterized in that: A plurality of bearings (43) distributed along the axial direction are provided between the guide sleeve (42) and the knife rod (41).

6. The large diesel engine oil passage processing equipment according to claim 5, characterized in that: A bearing (43) is respectively disposed inside each of the two ends of the guide sleeve (42).

7. The large diesel engine oil passage processing equipment according to claim 1, characterized in that: The tool bar (41) and the boring bar (30) are provided with a channel (412) for the circulation of cutting fluid.

8. The large diesel engine oil passage processing equipment according to claim 7, characterized in that: An auxiliary support (11) for supporting the boring bar (30) is provided on the numerical control slide (10).

9. The large diesel engine oil passage processing equipment according to claim 8, characterized in that: The large diesel engine body oil passage processing equipment further comprises a platform (60), the fixture (50) is mounted on the platform (60), a guide frame (61) is provided on the platform (60), a guide hole is provided on the guide frame (61), and the boring bar (30) is axially slidably connected to the guide hole.

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