Natural gas high-pressure common rail milling machine finish machining clamp

Abstract

The utility model discloses a natural gas high-pressure common rail milling machine finish machining clamp which comprises a bottom plate, the upper end face of the bottom plate is provided with two end pressing rods, and the two end pressing rods are located at the two ends of the bottom plate and driven by end air cylinders to ascend and descend; the number of the limiting columns is consistent with that of side holes in the two sides of the natural gas high-pressure common rail, at least one limiting column in each row is provided with a positioning pin, and the positioning pins are driven by a positioning air cylinder to ascend and descend; the number of the side pressing rods is consistent with that of the limiting columns, the side pressing rods are driven by side air cylinders to ascend and descend, and the side pressing rods correspond to the limiting columns up and down; and the multiple supporting bases are located between the two rows of limiting columns, each supporting base is provided with an upper jacking column, and the upper jacking columns are driven by jacking cylinders to ascend and descend. The natural high-pressure gas common rail positioning device can position the natural high-pressure gas common rail and is beneficial to milling machine machining.

Description

Technical Field

[0001] This utility model relates to milling machine fixtures, and more particularly to a precision milling fixture for a natural gas high-pressure common rail milling machine. Background Technology

[0002] The key to the natural gas high-pressure common rail 10 system is to design a device that can provide stable pressure and minimize pressure fluctuations during natural gas injection. The natural gas common rail is irregularly shaped, and the natural gas high-pressure common rail 10 has end holes 11 at both ends, multiple slots 12 on its surface, and side holes 13 on both sides, all of which need to be machined. How to fix the natural gas common rail is a technical problem that urgently needs to be solved. Utility Model Content

[0003] To overcome the above-mentioned shortcomings, the purpose of this utility model is to provide a precision machining fixture for a natural gas high-pressure common rail milling machine that can position the natural gas high-pressure common rail without affecting the milling machine operation.

[0004] To achieve the above objectives, one technical solution adopted by this utility model is: a precision machining fixture for a natural gas high-pressure common rail milling machine, comprising a base plate, wherein the upper end surface of the base plate is provided with:

[0005] Two end pressure rods are located at both ends of the base plate and are driven to rise and fall by end cylinders;

[0006] Two rows of limiting posts, the number of which is the same as the number of side holes on both sides of the natural gas high-pressure common rail. At least one of the limiting posts in each row is provided with a positioning pin, which is driven to rise and fall by a positioning cylinder.

[0007] Two rows of side pressure rods, the number of which is the same as the number of limiting posts, and are driven to rise and fall by side cylinders. The side pressure rods correspond vertically to the limiting posts.

[0008] Multiple support bases are located between two rows of limiting columns. Each support base is provided with an upper top column, which is driven to rise and fall by a top cylinder.

[0009] The beneficial effects of this utility model of a high-pressure common rail milling machine finishing fixture for natural gas are:

[0010] This application places a high-pressure common rail for natural gas on multiple support bases. The high-pressure common rail is limited by positioning pins, and the two ends of the high-pressure common rail are pressed down by two end pressure rods. The bottom of the high-pressure common rail is pressed upward by an upper top column, and the top of the high-pressure common rail is pressed downward by a side pressure rod to fix it in place. The slots of the high-pressure common rail are exposed to the outside, and a milling machine can process them, as well as the end holes at both ends of the high-pressure common rail. Then the positioning pins move down to make room for the side holes, and the milling machine then processes the side holes. This positioning method does not hinder the processing of multiple holes in the high-pressure common rail.

[0011] Preferably, the positioning cylinder is disposed on the lower end face of the base plate.

[0012] Preferably, when the side pressure rod presses against the side hole, the side pressure rod is in a horizontal state, and a machining hole is provided on the side pressure rod, the machining hole corresponding vertically to the side hole. During milling, the machining center passes through the machining hole to machine the side hole.

[0013] Preferably, the base plate has countersunk mounting holes at its four corners for locking onto the machining center of a milling machine.

[0014] Preferably, mounting plates are provided at both ends of the base plate, the mounting plates are locked and fixed through the countersunk mounting holes, the mounting plates are perpendicular to the base plate, and the mounting plates are provided with multiple locking holes.

[0015] Preferably, each row of limiting posts is provided with only one positioning pin, with one positioning pin located on the left end of one row and the other positioning pin located on the right end of another row. This staggered arrangement effectively positions the high-pressure common rail for natural gas, reducing the need for positioning cylinders.

[0016] Preferably, at least one row of the side pressure bars is arranged at an angle to provide clearance for the machining center of the milling machine.

[0017] Preferably, a rotating shaft is connected to the middle of the side pressure rod, and a pair of support plates are provided on one side of the upper end face of the side cylinder body. The two ends of the rotating shaft are respectively rotatably mounted on the pair of support plates. The telescopic shaft of the side cylinder is arranged upward and parallel to the support plates, and the telescopic shaft of the side cylinder is rotatably connected to the end of the side pressure rod. Driven by the side cylinder, the side pressure rod is rotated, thereby achieving the side pressure rod pressing against the high-pressure common rail of natural gas. Attached Figure Description

[0018] Figure 1 This is a perspective view of the integration of this embodiment with a high-pressure common rail system for natural gas;

[0019] Figure 2 This is a first-view perspective perspective of this embodiment;

[0020] Figure 3 This is a partial perspective view of this embodiment;

[0021] Figure 4 This is a perspective view from the second angle of this embodiment.

[0022] In the picture:

[0023] 1. Base plate; 2. End pressure rod; 3. End cylinder; 4. Limiting post; 5. Positioning pin; 6. Side pressure rod; 7. Side cylinder; 8. Support base; 9. Top column; 10. Natural gas high-pressure common rail; 11. End hole; 12. Slot hole; 13. Side hole; 14. Countersunk mounting hole; 15. Mounting plate; 16. Positioning cylinder; 17. Rotating shaft; 18. Support plate. Detailed Implementation

[0024] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0025] See Figures 1 to 4 As shown, this embodiment discloses a precision machining fixture for a natural gas high-pressure common rail milling machine, including a base plate 1, the upper surface of which is provided with:

[0026] Two end pressure rods 2 are located at both ends of the base plate 1 and are driven to lift by end cylinders 3;

[0027] Two rows of limiting posts 4, the number of limiting posts 4 is the same as the number of side holes 13 on both sides of the natural gas high-pressure common rail 10, and at least one limiting post 4 in each row is provided with a positioning pin 5, which is driven to rise and fall by a positioning cylinder 16; in this embodiment, there are two limiting posts 4 in each row, and the positioning cylinder 16 is located on the lower end face of the base plate 1.

[0028] There are two rows of side pressure rods 6, the number of which is the same as the number of limiting posts 4, and they are driven to rise and fall by side cylinders 7. The side pressure rods 6 and the limiting posts 4 are vertically aligned. In this embodiment, there are two side pressure rods 6 in each row.

[0029] Multiple support bases 8 are provided. In this embodiment, four support bases 8 are provided. The four support bases 8 are located between two rows of limit columns 4. Each support base 8 is provided with an upper top column 9, which is driven to rise and fall by a top cylinder.

[0030] When the side pressure rod 6 presses against the side hole 13, the side pressure rod 6 is in a horizontal state. The side pressure rod 6 is provided with a machining hole, which corresponds vertically to the side hole 13. During milling, the machining center passes through the machining hole to machine the side hole 13.

[0031] The base plate 1 has countersunk mounting holes 14 at each of its four corners for locking onto the machining center of the milling machine. More specifically, in this embodiment, the base plate 1 has mounting plates 15 at both ends. The mounting plates 15 are locked and fixed by countersunk mounting holes 14. The mounting plates 15 are perpendicular to the base plate 1 and have multiple locking holes.

[0032] In some embodiments, each of the four limiting posts 4 may be provided with a positioning pin 5, which is driven by a positioning cylinder 16.

[0033] In other embodiments, each row of limiting posts 4 is provided with only one positioning pin 5, with one positioning pin 5 located on the left end of one row of limiting posts 4 and the other positioning pin 5 located on the right end of another row. By staggering the positions, the high-pressure common rail 10 of natural gas can be positioned better, reducing the need for positioning cylinders 16.

[0034] At least one row of side pressure bars 6 is inclined to provide clearance for the machining center of the milling machine. In some embodiments, one row of side pressure bars 6 is inclined, and in other embodiments, two rows of side pressure bars 6 may also be inclined.

[0035] A rotating shaft 17 is connected to the middle of the side pressure rod 6. A pair of support plates 18 are provided on one side of the upper end face of the cylinder body of the side cylinder 7. The two ends of the rotating shaft 17 are respectively rotatably mounted on the pair of support plates 18. The telescopic shaft of the side cylinder 7 is set upward and parallel to the support plates 18. The telescopic shaft of the side cylinder 7 is rotatably connected to the end of the side pressure rod 6. Driven by the side cylinder 7, the side pressure rod 6 is rotated, thereby enabling the side pressure rod 6 to press against the high-pressure common rail 10 of natural gas.

[0036] The working principle of this embodiment is as follows: The high-pressure natural gas rail 10 is placed on multiple support bases 8. The high-pressure natural gas rail 10 is limited by the positioning pin 5. The two ends of the high-pressure natural gas rail 10 are pressed by the two end pressure rods 2. The bottom of the high-pressure natural gas rail 10 is pressed upward by the upper top column 9. The top of the high-pressure natural gas rail is pressed downward by the side pressure rod 6 to fix it. The slot 12 of the high-pressure natural gas rail 10 is exposed to the outside, and the milling machine can process it. The end holes 11 at both ends of the high-pressure natural gas rail 10 are also processed. Then the positioning pin 5 is moved down to make room for the side holes 13. The milling machine then processes the side holes 13. After processing, the end pressure rods 2 and the side pressure rods 6 are released from the upper end face of the high-pressure natural gas rail 10. The upper top column pushes it out. The robot or operator can then remove the processed high-pressure natural gas rail 10.

[0037] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They cannot be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A precision machining fixture for a natural gas high-pressure common rail milling machine, comprising a base plate (1), characterized in that: The upper surface of the base plate (1) is provided with: Two end pressure rods (2) are located at both ends of the base plate (1) and are driven to rise and fall by end cylinders (3); Two rows of limiting posts (4), the number of the limiting posts (4) is the same as the number of side holes (13) on both sides of the natural gas high pressure common rail (10), and at least one of the limiting posts (4) in each row is provided with a positioning pin (5), which is driven to rise and fall by a positioning cylinder (16). Two rows of side pressure rods (6), the number of which is the same as the number of limiting posts (4), and are driven to rise and fall by side cylinders (7). The side pressure rods (6) and the limiting posts (4) are vertically corresponding. Multiple support bases (8) are located between two rows of limiting columns (4). Each support base (8) is provided with an upper top column (9), which is driven to rise and fall by a top cylinder.

2. The high-pressure common rail milling machine finishing fixture for natural gas as described in claim 1, characterized in that: The positioning cylinder (16) is located on the lower end face of the base plate (1).

3. The high-pressure common rail milling machine finishing fixture for natural gas according to claim 1, characterized in that: When the side pressure rod (6) presses against the side hole (13), the side pressure rod (6) is in a horizontal state. The side pressure rod (6) is provided with a machining hole, which corresponds vertically to the side hole (13).

4. The high-pressure common rail milling machine finishing fixture for natural gas as described in claim 1, characterized in that: The base plate (1) has countersunk mounting holes (14) at its four corners for locking onto the machining center of the milling machine.

5. The high-pressure common rail milling machine finishing fixture for natural gas as described in claim 4, characterized in that: Mounting plates (15) are provided at both ends of the base plate (1). The mounting plates (15) are locked and fixed through the countersunk mounting holes (14). The mounting plates (15) are perpendicular to the base plate (1). Multiple locking holes are provided on the mounting plates (15).

6. The high-pressure common rail milling machine finishing fixture for natural gas as described in claim 1, characterized in that: Each row of the limiting posts (4) is provided with only one positioning pin (5), one of the positioning pins (5) is located on the left end of one row of the limiting posts (4), and the other positioning pin (5) is located on the right end of another row.

7. The high-pressure common rail milling machine finishing fixture for natural gas as described in claim 1, characterized in that: At least one row of the side pressure bars (6) are arranged at an angle.

8. The high-pressure common rail milling machine finishing fixture for natural gas as described in claim 1, characterized in that: The middle part of the side pressure rod (6) is connected to a rotating shaft (17). A pair of support plates (18) are provided on one side of the upper end face of the cylinder body of the side cylinder (7). The two ends of the rotating shaft (17) are respectively rotatably mounted on the pair of support plates (18). The telescopic shaft of the side cylinder (7) is set upward and parallel to the support plates (18). The telescopic shaft of the side cylinder (7) is rotatably connected to the end of the side pressure rod (6).

Images