High-pressure pump body inclined hole processing device

Abstract

The application provides a high-pressure pump body inclined hole processing device, which comprises a positioning seat, a positioning bolt and a guide assembly. A mounting hole is arranged on the top surface of the positioning seat, a connecting shaft is arranged on the bottom surface, and the bottom of the positioning bolt is detachably inserted into the mounting hole. The guide assembly comprises a bearing seat, a first bearing lug and a second bearing lug. The bearing seat is arranged on the connecting shaft in an angle-adjustable manner, and a first bearing inclined surface and a second bearing inclined surface are arranged on the outer side wall of the bearing seat. The first bearing lug is vertically arranged on the first bearing inclined surface, a first drill hole is arranged on the first bearing lug, and a first drill sleeve is arranged in the first drill hole. The second bearing lug is vertically arranged on the second bearing inclined surface, a second drill hole is arranged on the second bearing lug, and a second drill sleeve is arranged in the second drill hole. The high-pressure pump body inclined hole processing device can reduce the processing difficulty of the inclined hole on the outer surface of the pump body and improve the processing precision of the inclined hole.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of high-pressure fuel pump machining equipment, and particularly relates to a high-pressure pump body inclined hole machining device. BACKGROUND

[0002] The high-pressure common rail system is an advanced fuel injection system, which is widely used in high-power diesel engines at the present stage due to its high fuel injection pressure and flexible control characteristics. Since the high-pressure common rail system needs to rely on a high-pressure fuel pump for fuel pumping, the machining precision of the pump body of the high-pressure fuel pump will directly affect the working effect of the high-pressure common rail system.

[0003] However, the pump body structure of the common high-pressure fuel pump is relatively complex, and the processing difficulty of the staff is great when high-precision machining of the pump body is performed. Especially when machining the oil channel holes on the outside of the pump body, since the number of oil channel holes is large and different oil channel holes are distributed on different planes, a large amount of time is often consumed when machining. At the same time, since each oil channel hole has strict angle requirements, and the existing tooling fixture cannot well guide and limit the relative position between the pump body and the drilling equipment, angle deviation is likely to occur when drilling, thereby causing the machining precision of the high-pressure fuel pump to be unable to meet the actual demand. SUMMARY

[0004] Therefore, the application aims to provide a high-pressure pump body inclined hole machining device to solve the above technical problems.

[0005] To achieve the above-mentioned purpose, the technical scheme of the application is as follows:

[0006] A high-pressure pump body inclined hole machining device comprises a positioning seat, a positioning plug and a guide assembly. The top surface of the positioning seat is provided with a mounting hole, and the bottom surface is provided with a connecting shaft. The bottom of the positioning plug is detachably inserted into the mounting hole. The guide assembly comprises a bearing seat, a first bearing lug and a second bearing lug. The bearing seat is positioned at an adjustable angle on the connecting shaft. A first bearing inclined surface and a second bearing inclined surface are arranged on the outer side wall of the bearing seat. The first bearing inclined surface and the second bearing inclined surface are respectively located on the two sides of the connecting shaft. The included angle between the first bearing inclined surface and the connecting shaft is greater than the included angle between the second bearing inclined surface and the connecting shaft. The first bearing lug is vertically arranged on the first bearing inclined surface. A first drill hole is arranged on the first bearing lug, and a first drill sleeve is arranged in the first drill hole. The second bearing lug is vertically arranged on the second bearing inclined surface. A second drill hole is arranged on the second bearing lug, and a second drill sleeve is arranged in the second drill hole.

[0007] Further, the bearing seat is provided with a connecting hole for accommodating the connecting shaft, and a positioning strip is arranged on the inner side wall of the connecting hole; a plurality of positioning grooves for accommodating the positioning strip are arranged on the outer side wall of the connecting shaft, the length direction of the positioning grooves is parallel to the axis direction of the connecting shaft, and the plurality of positioning grooves are arranged in a ring shape on the side of the axis of the connecting shaft.

[0008] Further, an outer thread is arranged on the outer side wall of the connecting shaft, and a locking sleeve is further arranged on the connecting shaft; an inner thread matched with the outer thread on the connecting shaft is arranged on the inner side wall of the locking sleeve, and the top surface of the locking sleeve abuts against the bottom surface of the bearing seat.

[0009] Further, the locking sleeve comprises an insertion section and a limiting section, and the insertion section is located on the top of the limiting section; a threaded hole is arranged on the bottom surface of the bearing seat, the insertion section is arranged inside the threaded hole, the outer diameter of the limiting section is greater than the inner diameter of the threaded hole, and an outer thread matched with the threaded hole is arranged on the outer side wall of the insertion section.

[0010] Further, a positioning bushing is arranged inside the mounting hole, the outer diameter of the positioning bushing is equal to the inner diameter of the mounting hole, and the inner diameter of the positioning bushing is equal to the outer diameter of the positioning pin.

[0011] Further, the positioning seat is provided with a positioning section, a plurality of positioning holes are arranged on the positioning section, and the axis of the positioning hole is perpendicular to the axis of the mounting hole.

[0012] Compared with the prior art, the high-pressure pump body inclined hole machining device has the following advantages:

[0013] (1) The high-pressure pump body inclined hole machining device is provided with a positioning pin on the top of the positioning seat, and a bearing seat with an adjustable positioning angle is arranged on the bottom of the positioning seat. When machining the pump body, the workers can first install the device on the pump body through the positioning pin, and then adjust the positioning angle of the bearing seat according to the position of the oil channel hole to be machined, so that the drill sleeve on the bearing seat is aligned with the oil channel hole, thereby facilitating the guidance of the drilling tool and reducing the machining difficulty of the pump body. In addition, since the two bearing ears in the guiding assembly are arranged on the two bearing inclined surfaces on the bearing seat, and the inclinations of the two bearing inclined surfaces are different, the workers can align the bearing ears with different inclinations with the oil channel hole to be machined according to actual needs, thereby meeting the machining inclination angle of the oil channel hole and improving the machining precision of the pump body.

[0014] (2) The high-pressure pump body inclined hole processing device described in this invention has a locking sleeve on the connecting shaft, and the locking sleeve includes an insertion section and a limiting section. After the positioning angle of the bearing seat is determined, the operator can rotate the locking sleeve upward to limit and fix the bearing seat. Since the inner and outer walls of the insertion section are threaded, this device has a better fastening effect compared with common locking structures, thereby preventing abnormal movement of the bearing seat during operation. Attached Figure Description

[0015] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0016] Figure 1 A schematic diagram of the high-pressure pump body inclined hole processing device described in the embodiment of the present invention;

[0017] Figure 2 A schematic diagram of the high-pressure pump body inclined hole processing device described in an embodiment of the present invention from another angle;

[0018] Figure 3 Exploded view of the high-pressure pump body inclined hole processing device described in the embodiment of the present invention;

[0019] Figure 4 A schematic diagram of the positioning seat described in an embodiment of the present invention;

[0020] Figure 5 A schematic diagram of the structure of the bearing seat described in the embodiment of the present invention;

[0021] Figure 6 This is a schematic diagram of the structure of the support base described in an embodiment of the present invention from another angle;

[0022] Figure 7 A cross-sectional view of the bearing seat described in an embodiment of the present invention.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1-Positioning seat; 11-Mounting hole; 111-Positioning bushing; 12-Connecting shaft; 121-Positioning groove; 13-Positioning cut surface; 131-Positioning hole; 2-Positioning pin; 3-Bearing seat; 31-First bearing inclined surface; 32-Second bearing inclined surface; 33-Connecting hole; 331-Positioning strip; 34-Threaded hole; 4-First bearing lug; 41-First drilled hole; 5-Second bearing lug; 51-Second drilled hole; 61-First drill sleeve; 62-Second drill sleeve; 71-Insert section; 72-Limiting section. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0026] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0027] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0028] The invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] A high-pressure pump body inclined hole machining device, the structure of which can be made of Figures 1-7 The following diagram illustrates the high-pressure pump body inclined hole machining device in this embodiment: a positioning seat 1, a positioning pin 2, and a guide assembly. The positioning seat 1 provides a mounting base for the guide assembly, the positioning pin 2 facilitates the assembly between the positioning seat 1 and the pump body to be machined, and the guide assembly guides the drilling tool, thereby facilitating the drilling tool's machining of inclined oil passage holes on the pump body.

[0030] Specifically, such as Figure 4 As shown, a mounting hole 11 is provided on the top surface of the positioning seat 1, and a connecting shaft 12 for connecting the guide assembly is provided on the bottom surface. In use, the operator can first insert the positioning pin 2 into the preset hole on the pump body to be processed, and then detachably insert the bottom of the positioning pin 2 into the mounting hole 11, thereby completing the assembly between the positioning seat 1 and the pump body to be processed.

[0031] Optionally, to improve the insertion stability of the positioning pin 2 inside the mounting hole 11, this embodiment may provide a positioning bushing 111 inside the mounting hole 11, and the outer diameter of the positioning bushing 111 should be equal to the inner diameter of the mounting hole 11, and the inner diameter should be equal to the outer diameter of the positioning pin 2.

[0032] As an optional implementation of this embodiment, to improve the assembly accuracy between the positioning seat 1 and the pump body to be processed, a positioning surface 13 may also be provided on the positioning seat 1, and a plurality of positioning holes 131 with the axis perpendicular to the axis of the mounting hole 11 are provided on the positioning surface 13. When assembling the positioning seat 1 and the pump body to be processed, the operator can first insert the positioning protrusion on the pump body into the positioning hole 131 on the positioning surface 9, and then insert the positioning pin 2 into the preset hole on the pump body. Since the axis of the positioning hole 131 is perpendicular to the axis of the mounting hole 11, after the positioning pin 2 is assembled, the positioning seat 1 and the pump body to be processed will obtain two mutually perpendicular limiting constraints. In this way, the assembly accuracy between the positioning seat 1 and the pump body to be processed can be improved, and the guiding component can accurately guide the drilling tool to the preset inclined hole processing position.

[0033] Figures 5-7 As shown in the figure, the guiding component in this embodiment includes a support base 3, a first support ear 4, and a second support ear 5. The outer wall of the support base 3 has a first support inclined surface 31 and a second support inclined surface 32. The first support ear 4 is vertically disposed on the first support inclined surface 31, and has a first drill hole 41 with a first drill sleeve 61 inside. The second support ear 5 is vertically disposed on the second support inclined surface 32, and has a second drill hole 51 with a second drill sleeve 62 inside.

[0034] It should be noted that in this embodiment, the first bearing inclined surface 31 and the second bearing inclined surface 32 should be located on both sides of the connecting shaft 12, and the angle formed by the first bearing inclined surface 31 and the connecting shaft 12 should be greater than the angle formed by the second bearing inclined surface 32 and the connecting shaft 12. Since the two bearing ears for installing the first drill sleeve 61 and the second drill sleeve 62 are respectively located on the two bearing inclined surfaces, the first drill sleeve 61 and the second drill sleeve 62 will form different inclination angles with the connecting shaft 12. When the operator guides the drilling tool using the first drill sleeve 61 or the second drill sleeve 62, the drilling tool will form oil passage holes with different inclinations on the pump body to be processed, thereby meeting various processing requirements.

[0035] During assembly of this device, the operator can adjust the positioning angle of the bearing seat 3 on the connecting shaft 12. When using this device to process inclined holes, the operator can select the first drill sleeve 61 and the second drill sleeve 62 according to the inclination requirements of the inclined hole to be processed, and then adjust the positioning angle of the bearing seat 3 so that the selected drill sleeve is aligned with the preset inclined hole processing position, thereby improving the flexibility of the device.

[0036] Optionally, to adjust the positioning angle of the bearing seat 3, a connecting hole 33 may be provided on the bearing seat 3, and a positioning strip 331 may be provided on the inner wall of the connecting hole 33. Correspondingly, multiple positioning grooves 121 should be provided on the outer wall of the connecting shaft 12, the length direction of each positioning groove 121 should be parallel to the axial direction of the connecting shaft 12, and the multiple positioning grooves 121 should be arranged in a ring around the circumference of the axial direction of the connecting shaft 12. When adjusting the positioning angle of the bearing seat 3, the operator can insert the positioning strip 331 inside the connecting hole 33 into the positioning groove 121 of the corresponding positioning angle, thereby restricting the circumferential position of the bearing seat 3 by means of the cooperation of the positioning strip 331 and the positioning groove 121, so that the positioning angle of the bearing seat 3 matches the actual requirements.

[0037] Furthermore, to prevent the bearing seat 3 from axially moving along the connecting shaft 12 during use, this embodiment may also provide an external thread on the outer wall of the connecting shaft 12, and a locking sleeve is also provided on the connecting shaft 12, with an internal thread on the inner wall of the locking sleeve that mates with the external thread on the connecting shaft 12. Once the positioning angle of the bearing seat 3 is determined, the operator can rotate the connecting sleeve upwards so that the top surface of the locking sleeve abuts against the bottom surface of the bearing seat 3, thereby restricting the axial position of the bearing seat 3 with the help of the locking sleeve.

[0038] Optionally, to enhance the limiting capability of the locking sleeve, the locking sleeve may include an insertion section 71 and a limiting section 72, and a threaded hole 34 for accommodating the insertion section 71 is provided on the bottom surface of the bearing seat 3. Specifically, the insertion section 71 should be located at the top of the limiting section 72, and an external thread that mates with the threaded hole 34 is provided on the outer wall of the insertion section 71, and the outer diameter of the limiting section 72 is larger than the inner diameter of the threaded hole 34. When the operator rotates the locking sleeve upward, the insertion section 71 will enter the threaded hole 34, and the top surface of the limiting section 72 will abut against the bottom surface of the bearing seat 3. Since both the inner and outer walls of the insertion section 71 are threaded, after the insertion section 71 enters the threaded hole 34, the locking sleeve can achieve a stronger fastening effect between the bearing seat 3 and the connecting shaft 12, thus preventing abnormal movement of the bearing seat 3 during operation and improving the accuracy of the inclined hole machining.

[0039] The effects of the above solution are explained below:

[0040] This embodiment provides a high-pressure pump body inclined hole machining device. Through the cooperation of the positioning seat and positioning pin, the device can be accurately assembled onto the pump body to be machined. It can also guide the drilling tool through a guiding component, thereby reducing the machining difficulty of the inclined oil passage hole on the outside of the pump body. Secondly, the two bearing ears in this device have different inclination angles, and the position of the bearing ears can be changed by adjusting the positioning angle of the bearing seat, thus making it suitable for machining oil passage holes with different inclination requirements. Furthermore, the locking sleeve of this device includes an insertion section, and both the inner and outer walls of the insertion section are threaded, thus providing better limiting effect for the bearing seat and preventing abnormal movement of the bearing seat during use, thereby improving the machining accuracy of the inclined hole.

[0041] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for machining oblique holes in a high-pressure pump body, characterized in that, include: The positioning base (1), positioning pin (2), and guide assembly are provided. The top surface of the positioning base (1) has a mounting hole (11), and the bottom surface has a connecting shaft (12). The bottom of the positioning pin (2) is detachably inserted into the mounting hole (11). The guide assembly includes a bearing base (3), a first bearing ear (4), and a second bearing ear (5). The bearing base (3) is positioned at an adjustable angle on the connecting shaft (12). A first bearing inclined surface (31) and a second bearing inclined surface (32) are provided on the outer side wall of the bearing base (3). The first bearing inclined surface (31) and the second bearing inclined surface (32) are respectively... The first bearing ear (31) is located on both sides of the connecting shaft (12), and the angle formed by the first bearing inclined surface (31) and the connecting shaft (12) is greater than the angle formed by the second bearing inclined surface (32) and the connecting shaft (12); the first bearing ear (4) is vertically arranged on the first bearing inclined surface (31), and a first drill hole (41) is provided on the first bearing ear (4), and a first drill sleeve (61) is provided inside the first drill hole (41); the second bearing ear (5) is vertically arranged on the second bearing inclined surface (32), and a second drill hole (51) is provided on the second bearing ear (5), and a second drill sleeve (62) is provided inside the second drill hole (51).

2. The high-pressure pump body inclined hole processing device according to claim 1, characterized in that: The bearing seat (3) is provided with a connecting hole (33) for accommodating the connecting shaft (12), and a positioning strip (331) is provided on the inner side wall of the connecting hole (33); a plurality of positioning grooves (121) for accommodating the positioning strip (331) are provided on the outer side wall of the connecting shaft (12), the length direction of the positioning groove (121) is parallel to the axial direction of the connecting shaft (12), and the plurality of positioning grooves (121) are arranged in a ring around the circumference of the axial direction of the connecting shaft (12).

3. The high-pressure pump body inclined hole processing device according to claim 1, characterized in that: The outer side wall of the connecting shaft (12) is provided with an external thread, and a locking sleeve is also provided on the connecting shaft (12); the inner side wall of the locking sleeve is provided with an internal thread that matches the external thread on the connecting shaft (12), and the top surface of the locking sleeve abuts against the bottom surface of the bearing seat (3).

4. The high-pressure pump body inclined hole processing device according to claim 3, characterized in that: The locking sleeve includes an insertion section (71) and a limiting section (72), with the insertion section (71) located at the top of the limiting section (72). A threaded hole (34) is provided on the bottom surface of the bearing seat (3), and the insertion section (71) is placed inside the threaded hole (34). The outer diameter of the limiting section (72) is larger than the inner diameter of the threaded hole (34), and an external thread that mates with the threaded hole (34) is provided on the outer side wall of the insertion section (71).

5. The high-pressure pump body inclined hole processing device according to claim 1, characterized in that: The mounting hole (11) is provided with a positioning bushing (111). The outer diameter of the positioning bushing (111) is equal to the inner diameter of the mounting hole (11), and the inner diameter of the positioning bushing (111) is equal to the outer diameter of the positioning pin (2).

6. The high-pressure pump body inclined hole processing device according to claim 1, characterized in that: The positioning seat (1) is provided with a positioning cut surface (13), and a plurality of positioning holes (131) are provided on the positioning cut surface (13), and the axis of the positioning hole (131) is perpendicular to the axis of the mounting hole (11).

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