Oil transportation path cover inclined hole machining clamp

Abstract

The invention provides an oil transportation path cover inclined hole machining clamp which comprises a clamp body, an inclined workpiece positioning part is arranged on the clamp body, a drill bushing is arranged at the position, corresponding to the upper portion of the workpiece positioning part, of the clamp body, one end of the drill bushing is arranged on the clamp body, and the other end of the drill bushing penetrates through the workpiece positioning part. The obliquely upward end of the workpiece positioning part is provided with a positioning ring used for positioning the oil conveying path cover, the obliquely downward end of the workpiece positioning part is provided with a limiting assembly used for positioning the oil conveying path cover, and the workpiece positioning part is further provided with a pressing assembly used for pressing the oil conveying path cover. The oil transportation path cover inclined hole machining clamp has the advantages of being simple in structure, low in cost, easy and convenient to operate and easy to use and assemble, inclined hole drilling work can be completed through common equipment, high cost caused by using numerical control equipment can be avoided, the oil transportation path cover inclined hole machining clamp is used for machining oil transportation path cover inclined holes, and the machining efficiency is improved. And the inclined hole machining precision and the engine use requirement can be ensured.

Description

Technical Field

[0001] The present invention belongs to the technical field of engine part processing, and in particular relates to a fixture for machining inclined holes of an oil delivery cover. Background Art

[0002] The oil delivery cover is a key part of the lubrication system of a diesel engine. Its function is to distribute the engine oil supplied by the oil pump to the oil channels of the crankshaft and the upper and lower crankcases. The accuracy of its oil holes is related to the flow distribution of the lubricating oil in the diesel engine. Therefore, the machining accuracy of the hole position and angle directly affects the lubrication effect. However, when using the existing fixture to machine the inclined holes of the oil delivery cover, there are problems of poor positioning and clamping reliability and inconvenient operation, which is not conducive to improving the machining efficiency of the inclined holes of the oil delivery cover. Summary of the Invention

[0003] In view of this, the present invention aims to provide a fixture for machining inclined holes of an oil delivery cover to solve the problems of poor positioning and clamping reliability and inconvenient operation when using the existing fixture to machine the inclined holes of the oil delivery cover.

[0004] To achieve the above object, the technical solution of the present invention is realized as follows:

[0005] A fixture for machining inclined holes of an oil delivery cover includes a fixture body. An inclined workpiece positioning part is provided on the fixture body. A drill bushing is provided above the workpiece positioning part on the fixture body. One end of the drill bushing is arranged on the fixture body, and the other end passes through the workpiece positioning part. A positioning ring for positioning the oil delivery cover is provided at the obliquely upward end of the workpiece positioning part, and a limiting component for positioning the oil delivery cover is provided at the obliquely downward end. A pressing component for pressing the oil delivery cover is further provided on the workpiece positioning part.

[0006] Further, the positioning ring is detachably installed on the workpiece positioning part through fixing screws, and at least four fixing screws are evenly arranged along the circumference of the positioning ring.

[0007] Further, a receiving groove is provided at the position corresponding to the drill bushing on the positioning ring, and the end of the drill bushing passing through the workpiece positioning part extends into the receiving groove.

[0008] Further, an inclined surface parallel to the workpiece positioning part is provided at the end of the drill bushing extending into the receiving groove.

[0009] Further, a limiting groove is provided at the position corresponding to the drill bushing on the fixture body.

[0010] Further, an assembly hole for installing the drill bushing is provided on the fixture body, and the drill bushing is in interference fit with the assembly hole.

[0011] Further, the limiting component includes a plug pin, and the plug pin is detachably installed on the workpiece positioning part.

[0012] Furthermore, a bushing for installing a plug pin is provided at a position on the fixture body corresponding to the upper part of the workpiece positioning portion. A fixing nut is provided at one end of the plug pin passing through the bushing, and a plugging portion capable of cooperating with the hole position of the oil delivery road cover is provided at the other end.

[0013] Furthermore, the limiting component further includes a positioning key which is detachably installed at a position on the workpiece positioning portion corresponding to the lower part of the plug pin, and a positioning groove cooperating with the positioning key is provided on the plug pin.

[0014] Furthermore, the pressing component includes a pressing plate and a pressing block. One end of the pressing plate is rotatably installed on the workpiece positioning portion, and the other end is detachably installed on the workpiece positioning portion through a connecting screw. A threaded sleeve cooperating with the connecting screw is provided on the workpiece positioning portion; the pressing block is installed on the pressing plate through an adjusting screw, and there is a clamping gap between the pressing block and the workpiece positioning portion. A threaded hole cooperating with the adjusting screw is provided on the pressing plate. One end of the adjusting screw passing through the threaded hole is rotatably connected to the pressing block, and a handle part is provided at the other end.

[0015] Compared with the prior art, the oil delivery road cover inclined hole processing fixture of the present invention has the following advantages:

[0016] The oil delivery road cover inclined hole processing fixture of the present invention has the advantages of simple structure, low cost, simple operation, easy use and assembly. Drilling inclined holes can be completed with ordinary equipment, which can avoid the high cost caused by using numerical control equipment. Moreover, using this fixture to process the inclined holes of the oil delivery road cover can also ensure the machining accuracy of the inclined holes and the use requirements of the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings forming a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0018] Figure 1 is a schematic structural diagram of an oil delivery road cover inclined hole processing fixture according to an embodiment of the present invention;

[0019] Figure 2 is Figure 1 a schematic structural diagram in the A direction in;

[0020] Figure 3 is Figure 2 a sectional view taken along the line B-B in.

[0021] Description of the reference numerals:

[0022] 1. Fixture body; 2. Workpiece positioning part; 3. Positioning ring; 4. Oil delivery road cover; 5. Limiting groove; 6. Drill bushing; 7. Inclined surface part; 8. Plug pin; 9. Fixed nut; 10. Bushing; 11. Positioning key; 12. Adjusting screw; 13. Pressing block; 14. Pressing plate; 15. Handle part; 16. Connecting screw; 17. Fixed screw; 18. Threaded sleeve; 19. Clamping clearance. Detailed implementation manner

[0023] The present invention will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. In addition, it should be noted that for the convenience of description, only parts related to the present invention rather than all structures are shown in the drawings.

[0024] An inclined hole machining fixture for an oil delivery road cover, as Figures 1 to 3 shown, includes a fixture body 1, an inclined workpiece positioning part 2 is provided on the fixture body 1, a drill bushing 6 is provided on the fixture body 1 at a position corresponding to the upper part of the workpiece positioning part 2, one end of the drill bushing 6 is arranged on the fixture body 1, and the other end passes through the workpiece positioning part 2; a positioning ring 3 for positioning the oil delivery road cover 4 is provided at the obliquely upward end of the workpiece positioning part 2, and a limiting component for positioning the oil delivery road cover 4 is provided at the obliquely downward end, and a pressing component for pressing the oil delivery road cover 4 is provided at the position corresponding to the positioning ring 3 on the workpiece positioning part 2.

[0025] Exemplarily, the workpiece positioning part 2 can be made into a plane at a certain angle with the horizontal plane, such as 60°, so that when the workpiece is drilled, the drill bit direction is perpendicular to the horizontal plane, and the angle of the inclined hole of the workpiece (i.e., the oil delivery road cover 4) can be guaranteed after drilling, which is beneficial to improving the machining accuracy of the inclined hole of the workpiece. Those skilled in the art can also adjust the inclination angle of the workpiece positioning part 2 according to the inclined hole angle to ensure that the drill bit direction is perpendicular to the horizontal plane, which will not be elaborated here.

[0026] Preferably, the positioning ring 3 is detachably installed on the workpiece positioning part 2 through fixed screws 17, and at least four fixed screws 17 are evenly arranged along the circumferential direction of the positioning ring 3. Exemplarily, four, six or more fixed screws 17 can be evenly arranged. By arranging a plurality of fixed screws 17 to install the positioning ring 3, the stability of the positioning ring 3 on the workpiece positioning part 2 can be ensured, so that the positioning ring 3 can continuously and stably position the upper end of the oil delivery road cover 4 during the machining process.

[0027] In the actual application process, a receiving groove is provided at the position on the positioning ring 3 corresponding to the drill bushing 6, and one end of the drill bushing 6 passing through the workpiece positioning portion 2 extends into the receiving groove. By installing the positioning ring 3 with the fixing screw 17, the operator can also select a suitable positioning ring 3 for installation according to the oil delivery cover 4 to be machined, and the operation is very simple. Among them, by providing the receiving groove, not only can the drill bushing 6 be received and a certain protection effect can be exerted on the end of the drill bushing 6, but also an anti-misoperation effect can be achieved, which is convenient for the operator to align and assemble the positioning ring 3, and reduces the assembly and adjustment difficulty of this fixture.

[0028] Preferably, one end of the drill bushing 6 extending into the receiving groove is provided with an inclined surface portion 7 parallel to the workpiece positioning portion 2. By extending the drill bushing 6 into the receiving groove, the distance between the drill bushing 6 and the workpiece can be shortened, which is beneficial to better guiding the drill bit to align with the drilling position of the workpiece for drilling.

[0029] Preferably, a limiting groove 5 is provided at the position on the fixture body 1 corresponding to the drill bushing 6. Specifically, an assembly hole for installing the drill bushing 6 is provided on the fixture body 1, and the drill bushing 6 is in interference fit with the assembly hole. By providing the limiting groove 5, a good guiding and limiting effect can be exerted on the drill bit, which is convenient for the drill bit to extend into the drill bushing 6. And by adopting the interference fit between the drill bushing 6 and the assembly hole for assembly, the assembly and maintenance difficulty of the drill bushing 6 is also reduced.

[0030] Preferably, the limiting component includes a plug pin 8, and the plug pin 8 is detachably installed on the workpiece positioning portion 2. Exemplarily, a bushing 10 for installing the plug pin 8 is provided at the position on the fixture body 1 corresponding to the upper part of the workpiece positioning portion 2. One end of the plug pin 8 passing through the bushing 10 is provided with a fixing nut 9, and the other end is provided with a plug-in portion capable of being matched with the hole position of the oil delivery cover 4. Among them, an installation hole for installing the bushing 10 can also be provided on the fixture body 1, and an interference fit can also be adopted between the bushing 10 and the installation hole to reduce the assembly difficulty.

[0031] In the actual application process, one end of the plug pin 8 passing through the bushing 10 is provided with an external thread for cooperating with the fixing nut 9, and the plug-in portion at the other end can adopt a shape design for cooperating with the corresponding hole position on the oil delivery cover 4. By adopting the detachable plug pin 8, the operator can also replace a suitable plug pin 8 for assembly according to needs, which is beneficial to improving the applicability of this fixture.

[0032] Preferably, the limiting component further includes a positioning key 11, which is detachably installed at a position corresponding to the lower part of the pin 8 on the workpiece positioning part 2, and a positioning groove cooperating with the positioning key 11 is provided on the pin 8. Exemplarily, the positioning member can be installed on the workpiece positioning part 2 by screws, screw holes cooperating with the screws are provided on the workpiece positioning part 2, and two screws can be arranged corresponding to the left and right sides of the positioning key 11. By installing the positioning key 11 on the workpiece positioning part 2 and using the cooperation between the positioning member and the positioning groove on the pin 8, the positioning of the pin 8 can be realized, and the loosening caused by the rotation of the pin 8 can be prevented, so as to ensure that the pin 8 can continuously and stably position the lower end of the oil delivery road cover 4.

[0033] Preferably, the pressing component includes a pressing plate 14 and a pressing block 13. One end of the pressing plate 14 is rotatably installed on the workpiece positioning part 2, and the other end is detachably installed on the workpiece positioning part 2 through a connecting screw 16. A threaded sleeve 18 cooperating with the connecting screw 16 is provided on the workpiece positioning part 2; the pressing block 13 is installed on the pressing plate 14 through an adjusting screw 12, and a clamping gap 19 exists between the pressing block 13 and the workpiece positioning part 2. A threaded hole cooperating with the adjusting screw 12 is provided on the pressing plate 14. One end of the adjusting screw 12 passing through the threaded hole is rotatably connected to the pressing block 13, and a handle member 15 is provided at the other end.

[0034] Exemplarily, one end of the pressing plate 14 can be installed on the workpiece positioning part 2 by conventional means such as a rotating shaft, and the pressing block 13 can also be installed on the adjusting screw 12 by conventional means such as a rotating shaft. The pressing block 13 and the adjusting screw 12 are coaxially arranged. Among them, the handle member 15 can adopt an existing star-shaped nut, and the star-shaped nut can be installed on the adjusting screw 12 by conventional means such as a pin to drive the adjusting screw 12 to cooperate with the threaded hole, drive the pressing block 13 to move, and then realize the adjustment of the size of the clamping gap 19.

[0035] In the actual application process, the fixture body 1 can be first installed and fixed on the machine tool, and after the workpiece positioning part 2 is cleaned, the workpiece is installed on the workpiece positioning part 2; at this time, the pin 8 and the positioning ring 3 are used to position the workpiece. At the same time, the pressing plate 14 is rotated, and after the pressing plate 14 is fixed by using the connecting screw 16, the adjusting screw 12 is used to drive the pressing block 13 to press and fix the workpiece on the workpiece positioning part 2. Finally, the workpiece can be drilled according to reasonable cutting parameters. After drilling is completed, the pressing of the pressing component on the workpiece is released, and the workpiece is taken off.

[0036] The inclined hole processing fixture for the oil delivery road cover of the present invention has the advantages of simple structure, low cost, simple operation, easy use and assembly. The work of drilling inclined holes can be completed by using ordinary equipment, the high cost caused by using numerical control equipment can be avoided, and the use of this fixture to process the inclined holes of the oil delivery road cover can also ensure the processing accuracy of the inclined holes and the use requirements of the engine.

[0037] Note that the above are only the preferred embodiments of the present invention and the technical principles applied. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments only. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A fixture for machining inclined holes of oil delivery line cover, characterized in that: The invention comprises a fixture body (1), wherein the fixture body (1) is provided with an inclined workpiece positioning portion (2), and a drill sleeve (6) is provided on the fixture body (1) at a position corresponding to the upper portion of the workpiece positioning portion (2), wherein one end of the drill sleeve (6) is arranged on the fixture body (1), and the other end passes through the workpiece positioning portion (2); a positioning ring (3) for positioning an oil delivery line cover (4) is provided at the inclined upward end of the workpiece positioning portion (2), and a limit assembly for positioning the oil delivery line cover (4) is provided at the inclined downward end; and a clamping assembly for clamping the oil delivery line cover (4) is also provided on the workpiece positioning portion (2).

2. The oil delivery line cover inclined hole machining fixture according to claim 1, characterized in that: The positioning ring (3) is detachably mounted on the workpiece positioning portion (2) via fixing screws (17), and at least four fixing screws (17) are evenly arranged along the circumference of the positioning ring (3).

3. The oil delivery line cover inclined hole machining fixture according to claim 2, characterized in that: A receiving groove is provided on the positioning ring (3) at a position corresponding to the drill sleeve (6), and the drill sleeve (6) passes through one end of the workpiece positioning portion (2) and extends into the receiving groove.

4. The oil delivery line cover inclined hole machining fixture according to claim 3, characterized in that: One end of the drill sleeve (6) extending into the receiving groove is provided with an inclined portion (7) parallel to the workpiece positioning portion (2).

5. The oil delivery line cover inclined hole machining fixture according to claim 3 or 4, characterized in that: A limiting groove (5) is provided on the clamp body (1) at a position corresponding to the drill sleeve (6).

6. The oil delivery line cover inclined hole machining fixture according to claim 5, characterized in that: The clamp body (1) is provided with an assembly hole for mounting a drill sleeve (6), and the drill sleeve (6) is interference-fitted with the assembly hole.

7. The oil delivery line cover inclined hole machining fixture according to claim 1, characterized in that: The limiting assembly comprises a latch (8), and the latch (8) is detachably mounted on the workpiece positioning portion (2).

8. The oil delivery line cover inclined hole machining fixture according to claim 7, characterized in that: A bushing (10) for mounting a latch (8) is provided at a position on the fixture body (1) corresponding to the position above the workpiece positioning portion (2); one end of the latch (8) passing through the bushing (10) is provided with a fixing nut (9), and the other end is provided with a plug-in portion that can cooperate with a hole in the oil delivery channel cover (4).

9. The oil delivery line cover inclined hole machining fixture according to claim 8, characterized in that: The limit assembly also includes a positioning key (11), which is detachably mounted on the workpiece positioning portion (2) at a position corresponding to the position below the latch (8), and the latch (8) is provided with a positioning groove that cooperates with the positioning key (11).

10. The oil delivery line cover inclined hole machining fixture according to claim 1, characterized in that: The clamping assembly comprises a clamping plate (14) and a clamping block (13); one end of the clamping plate (14) is rotatably mounted on the workpiece positioning portion (2), and the other end is detachably mounted on the workpiece positioning portion (2) via a connecting screw (16); a threaded sleeve (18) cooperating with the connecting screw (16) is provided on the workpiece positioning portion (2); the clamping block (13) is mounted on the clamping plate (14) via an adjusting screw (12); a clamping gap (19) exists between the clamping block (13) and the workpiece positioning portion (2); a threaded hole cooperating with the adjusting screw (12) is provided on the clamping plate (14); one end of the adjusting screw (12) passes through the threaded hole and is rotatably connected to the clamping block (13), and the other end is provided with a handle (15).

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