CN215788079U

CN215788079U - Hydraulic clamp for cutting machining of pump head of high-pressure fuel pump

Info

Publication number: CN215788079U
Application number: CN202121441617.9U
Authority: CN
Inventors: 庄晓伟; 田为刚; 张静; 孙伟
Original assignee: Jiangsu Longcheng Precision Forging Group Co ltd
Current assignee: Jiangsu Longcheng Precision Forging Group Co ltd
Priority date: 2021-06-28
Filing date: 2021-06-28
Publication date: 2022-02-11
Anticipated expiration: 2031-06-28

Abstract

A hydraulic clamp for cutting and machining a pump head of a high-pressure fuel pump comprises a vertical supporting part, a horizontal first clamping part, a horizontal second clamping part, a wedge pushing mechanism arranged between the horizontal first clamping part and the horizontal second clamping part, and an air tightness monitoring device arranged on the first clamping part and the second clamping part. According to the utility model, the oblique wedge flat pushing mechanism is adopted to convert the power in the vertical direction into the clamping force in the horizontal direction, so that the two products can be processed by one-time clamping, and the working efficiency is greatly improved; the air tightness detection device is arranged to improve the positioning precision of product clamping, and the low processing precision of the product caused by overlarge clamping gap is avoided; the height of the special wedge-shaped block is lower than that of the installed workpiece, so that tool collision during tool machining and switching is avoided, invalid production time is shortened, and production efficiency and stability are further improved.

Description

Hydraulic clamp for cutting machining of pump head of high-pressure fuel pump

Technical Field

The utility model belongs to the technical field of universal machinery, relates to a hydraulic tool for a numerical control machine tool, and particularly relates to a hydraulic clamp for cutting a pump head of a high-pressure fuel pump.

Background

The pump head is one of the key parts of the high-pressure fuel pump for the automobile, and is usually manufactured by a forging and cutting process, wherein the cutting process is usually carried out in a numerical control machining center.

In the prior art, a hydraulic chuck is usually adopted for machining pump head parts, only one product can be machined at a time, and the production efficiency is low. In addition, due to the limitation of the structure of the workpiece, the clamping position and the positioning requirement are high, the problems of cutter collision, low processing precision of products and the like are easy to occur.

The utility model provides a hydraulic clamp for cutting and machining a pump head of a high-pressure fuel pump, aiming at the problems of low production efficiency, easy tool collision, low product machining precision and the like of pump head parts during cutting and machining.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provides a hydraulic clamp for cutting a pump head of a high-pressure fuel pump, which can clamp two products at one time and process the two products at the same time, has high clamping reliability, and is not easy to generate the problems of cutter collision and low product processing precision.

The utility model provides the following technical scheme:

a hydraulic clamp for cutting and machining a pump head of a high-pressure fuel pump comprises a vertical supporting part, a horizontal first clamping part, a horizontal second clamping part, a wedge pushing mechanism arranged between the horizontal first clamping part and the horizontal second clamping part, and an air tightness monitoring device arranged on the first clamping part and the second clamping part.

Furthermore, the supporting part in the vertical direction comprises a workbench, a large bottom plate and a ship plate, the large bottom plate is arranged on the upper end face of the workbench, the middle of the workbench and the large bottom plate is connected through an eyebolt, and the ship plate is arranged on the large bottom plate.

Further, the inclined wedge flat pushing mechanism is composed of a straight line pushing cylinder, ejector rods, a pull rod, a sliding block, sliding block pressing heads, sub-claws, a cover plate and a supporting frame, the ejector rods are arranged on the inner side of the straight line pushing cylinder, the bottom of the pull rod is embedded in grooves of the ejector rods, the wedge-shaped sliding block is arranged on the upper end face of the pull rod, the sliding block pressing heads are arranged on two sides of the wedge-shaped sliding block, and a rectangular groove is formed in one side of each sliding block pressing head.

Further, the middle of the upper end face of the ship plate is provided with a support frame, a rectangular groove is formed in the middle of the support frame, and a cover plate is arranged on the support frame.

Further, the first clamping portion in the horizontal direction is composed of a turntable connecting disc, a first positioning seat base, a first new seat gold, a first pre-positioning block and a first deburring seat gold. The inner side of the turntable connecting disc is provided with a first positioning seat base, the upper end surface of the first positioning seat base is provided with a first new seat gold, a rectangular groove between the first positioning seat base and the first new seat gold is provided with a positioning key, the inner side of the first new seat gold is provided with a first deburring seat gold, two sides of the first deburring seat gold are provided with two first pre-positioning blocks which are connected with the first deburring seat gold through bolts and used for positioning the pump head body in the horizontal direction, one side of the first new seat gold is provided with four supporting legs, the inner sides of the supporting legs are provided with arc surfaces for preventing the pump head from horizontally sliding, the arc surfaces of the two supporting legs on the lower end surface of the first new seat gold are respectively provided with a side edge air tightness detection hole for detecting the positioning of the pump head body in the horizontal direction, one side of the first deburring seat gold is provided with a monitoring device, and the monitoring device consists of a first air supply pipe and a plug, and the bottom of the first deburring seat is provided with a bottom air tightness detection hole, and a pressure sensor, a drilling cutter and a deburring cutter are arranged above the workbench.

Further, the second clamping portion in the horizontal direction is composed of a tailstock connecting disc, a second positioning seat base, a second new seat metal, a second pre-positioning block and a second deburring seat metal. The novel tailstock connecting plate is characterized in that a second positioning seat base is arranged on the inner side of the tailstock connecting plate, a second new base is arranged on the upper end face of the second positioning seat base, a positioning key is arranged in a rectangular groove between the second positioning seat base and the second new base, a second deburring base is arranged on the inner side of the second new base, two second pre-positioning blocks are arranged on two sides of the second deburring base, the second pre-positioning blocks are connected with the second deburring base through bolts and used for positioning of a pump head body in the horizontal direction, four supporting legs are arranged on one side of the second new base, arc surfaces preventing the pump head from sliding horizontally are arranged on the inner sides of the supporting legs, and side air tightness detecting holes are formed in the arc surfaces of the two supporting legs on the lower end face of the second new base respectively and used for detecting the positioning of the pump head body in the horizontal direction. The second deburring seat gold one side is equipped with monitoring devices, monitoring devices comprises second air supply pipe and end cap, and second deburring seat gold bottom is equipped with bottom gas tightness inspection hole, the workstation top is equipped with pressure sensor, drilling sword and deburring sword.

Furthermore, the turntable connecting disc and the tailstock connecting disc are respectively arranged at two ends of the ship plate and are connected with the ship plate through bolts, and four anti-falling blocks are arranged at the bottom of the ship plate. And a second air inlet is formed in one side of the turntable connecting disc, and a first air inlet is formed in one side of the tailstock connecting disc.

Further, the sub-claw is embedded in the rectangular groove of the sliding block pressing head, two supporting legs are arranged on one side of the sub-claw, and arc surfaces for preventing the pump head body from sliding horizontally are arranged on the inner sides of the supporting legs.

Further, be equipped with the wedge recess on the wedge face of slider pressure head, the sliding block both sides are equipped with the wedge arch, and the wedge arch inlays in the wedge recess, pushes away under the effect of jar at the straight line, drives the sliding block and slides from top to bottom in the wedge recess, and the slider pressure head of both sides makes reciprocating motion along the horizontal direction for the clamping of two station unilateral is tight and loosen.

Further, the hydraulic fixture for machining the high-pressure fuel pump head further comprises an air blowing cleaning device, wherein the air blowing cleaning device is composed of a bent pipe, air blowing heads, a third air supply pipe, a pressing buckle, an air pipe support and a three-way pipe fitting, the third air supply pipe is connected with the three-way pipe fitting through the bent pipe, the air blowing heads are fixedly installed on two sides of the large bottom plate through the pressing buckle and the air pipe support, four air blowing heads are arranged on each side of the large bottom plate, and the air blowing heads are connected with the bent pipe and the three-way pipe fitting through nuts.

The utility model has the technical effects and advantages that:

(1) the oblique wedge flat pushing mechanism is adopted to convert the power in the vertical direction into the clamping force in the horizontal direction, so that the two products can be processed by one-time clamping, and the working efficiency is greatly improved.

(2) The air tightness detection device is arranged to improve the positioning precision of product clamping, and the low machining precision of the product caused by overlarge clamping gap is avoided.

(3) The height of the special wedge-shaped block is lower than that of the installed workpiece, so that tool collision during tool machining and switching is avoided, invalid production time is shortened, and production efficiency and stability are further improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model.

FIG. 1 is a schematic diagram of the novel overall structure of the present invention;

FIG. 2 is a schematic view of a novel partial structure of the present invention;

FIG. 3 is a schematic view of the clamping portion of the pump head of the present invention;

FIG. 4 is a schematic view of a pump head hole machining structure according to the present invention;

FIG. 5 is a schematic diagram of a pump head deburring structure of the present invention.

Reference numbers in the figures: 1. a work table; 2. a large bottom plate; 3. a boat deck; 4. a turntable connecting disc; 5. a pump head body; 6. a sub-claw; 7. a slide block pressure head; 8. a cover plate; 9. a support frame; 10. a tailstock connecting disc; 11. a first air intake hole; 12. a first new seat gold; 13. a first positioning seat base; 14. a first pre-positioning block; 15. a first deburring base gold; 16. a first gas supply pipe; 17. bending the pipe; 18. a blowing head; 19. a third gas supply pipe; 20. a linear cylinder is pushed; 21. pressing and buckling; 22. a tracheal stent; 23. a tee pipe fitting; 24. an eye bolt; 25. a second air intake hole; 26. a top rod; 27. a pull rod; 28. a plug; 29. a bottom air tightness detection hole; 30. side air tightness detection holes; 31. a slider; 32. a positioning key; 33. an anti-falling block; 34. a pressure sensor; 35. a drilling cutter; 36. a deburring knife.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

As shown in fig. 1 and fig. 2, a hydraulic clamp for cutting and processing a high-pressure fuel pump head comprises a vertical support part, a horizontal first clamping part, a horizontal second clamping part, a wedge pushing mechanism arranged between the horizontal first clamping part and the horizontal second clamping part, and an air tightness monitoring device arranged on the first clamping part and the second clamping part, wherein a large bottom plate 2 is arranged on the upper end surface of a workbench 1, the middle of the workbench 1 and the large bottom plate 2 are connected through a lifting eye bolt 24, a boat plate 3 is arranged on the large bottom plate 2, a support frame 9 is arranged in the middle of the upper end surface of the boat plate 3, a rectangular groove is arranged in the middle of the support frame 9, the wedge pushing mechanism is arranged in the groove, the wedge pushing mechanism is composed of a linear pushing cylinder 20, a push rod 26, a pull rod 27, a slide block 31, a slide block pressure head 7, a cover plate 8 and the support frame 9, the push rod 26 is arranged on the inner side of the linear pushing cylinder 20, the bottom of a pull rod 27 is embedded in a groove of a mandril 26, the upper end surface of the pull rod 27 is provided with a wedge-shaped sliding block 31, two sides of the wedge-shaped sliding block 31 are provided with sliding block pressure heads 7, one side of each sliding block pressure head 7 is provided with a rectangular groove, a supporting frame 9 is provided with a cover plate 8, one side of a wedge-shaped horizontal pushing mechanism is provided with a clamping device, the clamping device comprises a sub claw 6, a rotary table connecting disc 4, a new seat metal 12, a positioning seat base 13, a pre-positioning block 14, a deburring seat metal 15 and a tail seat connecting disc 10, the rotary table connecting disc 4 and the tail seat connecting disc 10 are respectively arranged at two ends of a ship plate 3, one side of the rotary table 4 is provided with a second air inlet 25, one side of the tail seat connecting disc 10 is provided with a first air inlet 11, the inner sides of the rotary table connecting disc 4 and the tail seat connecting disc 10 are provided with a positioning seat base 13, the upper end surface of the positioning seat base 13 is provided with the new seat metal 12, the rectangular groove between the positioning seat base 13 and the new seat metal 12 is provided with a positioning key 32, the inner side of the new seat metal 12 is provided with a deburring seat metal 15, two sides of the deburring seat metal 15 are provided with two pre-positioning blocks 14, the pump head body 5 is fixedly clamped in a clamping device and an inclined wedge flat pushing mechanism, one side of the deburring seat metal 15 is provided with a monitoring device, and the monitoring device consists of a first air supply pipe 16 and a plug 28.

As shown in fig. 1 and 2, a hydraulic clamp for cutting and machining a pump head of a high-pressure fuel pump is characterized in that a workbench 1 is fixed on a four-axis through bolts, a turntable connecting disc 4 and a tailstock connecting disc 10 are respectively arranged at two ends of a ship plate 3 and are connected with the ship plate 3 through bolts, four anti-falling blocks 33 are arranged below the ship plate 3, a positioning seat base 13 is arranged at the inner sides of the turntable connecting disc 4 and the tailstock connecting disc 10, a new seat metal 12 is arranged on the positioning seat base 13, four supporting legs are arranged on one side of the new seat metal 12, and an arc surface for preventing a pump head body 5 from horizontally sliding is arranged on the inner sides of the supporting legs; the arc surfaces of the two supporting legs at the lower end surface of the new metal base 12 are respectively provided with a side edge air tightness detection hole 30 for detecting the positioning of the pump head body 5 in the horizontal direction; the sub-claw 6 is embedded in a rectangular groove of the sliding block pressure head 7, two supporting legs are arranged on one side of the sub-claw 6, and arc surfaces for preventing the pump head body 5 from sliding horizontally are arranged on the inner sides of the supporting legs; two pre-positioning blocks 14 are arranged on two sides of the deburring seat gold 15, are connected with the deburring seat gold 15 through bolts and are used for positioning the pump head body 5 in the horizontal direction; a wedge-shaped groove is formed in the wedge-shaped surface of the sliding block pressing head 7, wedge-shaped protrusions are arranged on two sides of the sliding block 31 and embedded in the wedge-shaped groove, and the sliding block 31 is driven to slide up and down in the wedge-shaped groove under the action of the linear pushing cylinder 20, so that the sliding block pressing heads 7 on the two sides are driven to move back and forth along the horizontal direction, and positioning and clamping on one side of two stations are achieved; the tail seat connecting disc 10 and one side of the rotary table connecting disc 4 are respectively provided with a first air inlet 11 and a second air inlet 25, air is supplied through an external air source, a pressure sensor 34 detects the air pressure between the pump head body 5 and the bottom air tightness detecting hole 29 and the side air tightness detecting hole 30, the horizontal and vertical positioning of the pump head body 5 is realized, the air blowing cleaning device is composed of a bent pipe 17, air blowing heads 18, a second air supply pipe 19, a press buckle 21, an air pipe support 22 and a three-way pipe fitting 23, the second air supply pipe 19 is connected with the three-way pipe fitting 23 through the bent pipe 17, the press buckle 21 and the air pipe support 22 are fixedly arranged on two sides of the large bottom plate 2, four air blowing heads 18 are arranged on each side, the air blowing heads 18 are connected with the bent pipe 17 and the three-way pipe fitting 23 through nuts, redundant iron chips in the machining process are blown away, and the influence of the machining of products by the residual iron chips is avoided.

For the convenience of understanding the technical solutions of the present invention, the following detailed description will be made on the working principle or the operation mode of the present invention in the practical process.

The working principle of the utility model is as follows: when the device is used, firstly, the roughly machined pump head body 5 is placed on the double-station deburring base metal 15, one side surface of the pump head body 5 is tightly attached to the arc surfaces of the four supporting legs of the new base metal 12, the linear pushing cylinder 20 moves downwards under the control of a hydraulic system, at the moment, the ejector rod 26 and the pull rod 27 drive the sliding block 31 to move downwards along the wedge-shaped groove of the sliding block pressure head 7, the sliding block pressure heads 7 on the two sides are subjected to extrusion forces towards the two sides in the downward movement process of the sliding block 31, the sliding block pressure head 7 moves towards the two sides along the horizontal direction so as to clamp the other side edge of the pump head body 5, secondly, after an external air source passes through the monitoring device, a first air passage enters the inside of the deburring base metal 15 on the two sides through the plug 28 along the second air inlet hole 25 on one side of the turntable connecting disc 4, and then passes through the bottom air tightness detecting hole 29 at the bottom of the deburring base metal 15 along the internal air passage, detecting whether the bottom of the pump head body 5 is qualified; the second air passage passes through the side air tightness detection holes 30 of the two supporting legs at the lower end along the air passage inside the new metal base 12 to detect whether the placement of the pump head body 5 is qualified, when the placement of the pump head body 5 has a problem, the pressure sensor 34 gives an alarm at the moment, the pump head body 5 needs to be placed again until no alarm is given, then the cutter head sequentially replaces the cutters to a drilling cutter 35 and a deburring cutter 36, the workbench 1 moves along the vertical and horizontal directions to process, meanwhile, the air blowing cleaning device blows away scrap iron on double stations through eight air blowing heads 18 in the processing process, finally, the hydraulic control system returns oil to the linear push cylinder 20, the push rod 26 and the pull rod 27 drive the sliding block 31 to move upwards, the sliding block pressure heads 7 at the two sides move towards the middle to be close to restore to the initial position, and the product is taken down, thereby completing the processing of holes and deburring of the pump head body 5, the utility model can fix six degrees of freedom of the pump head through the clamping device and the monitoring device according to the shape of the pump head, completes the processes of deburring and drilling, has strong flexibility and good universality, and can meet the requirements of a plurality of fine machining occasions.

The above embodiments are preferred embodiments of the present invention, and those skilled in the art can make variations and modifications to the above embodiments, therefore, the present invention is not limited to the above embodiments, and any obvious improvements, substitutions or modifications made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims

1. The utility model provides a high pressure fuel pump head hydraulically operated fixture for cutting process which characterized in that: the air tightness monitoring device comprises a vertical supporting part, a horizontal first clamping part, a horizontal second clamping part, a wedge pushing mechanism arranged between the horizontal first clamping part and the horizontal second clamping part, and an air tightness monitoring device arranged on the first clamping part and the second clamping part.

2. The hydraulic clamp for cutting the pump head of the high-pressure fuel pump according to claim 1, wherein: the supporting part of vertical direction includes workstation (1), big bottom plate (2) and deck (3), the up end of workstation (1) is equipped with big bottom plate (2), be connected through eyebolt (24) in the middle of workstation (1) and big bottom plate (2), be equipped with deck (3) above big bottom plate (2).

3. The hydraulic clamp for cutting the pump head of the high-pressure fuel pump according to claim 1, wherein: the oblique wedge flat pushing mechanism is composed of a straight line pushing cylinder (20), an ejector rod (26), a pull rod (27), a sliding block (31), a sliding block pressure head (7), sub claws (6), a cover plate (8) and a supporting frame (9), wherein the ejector rod (26) is arranged on the inner side of the straight line pushing cylinder (20), the bottom of the pull rod (27) is embedded in a groove of the ejector rod (26), the upper end face of the pull rod (27) is provided with the wedge-shaped sliding block (31), the two sides of the wedge-shaped sliding block (31) are provided with the sliding block pressure head (7), and one side of the sliding block pressure head (7) is provided with a rectangular groove.

4. The hydraulic clamp for cutting the pump head of the high-pressure fuel pump according to claim 2, wherein: the middle of boat deck (3) up end is equipped with support frame (9), be equipped with the rectangle recess in the middle of support frame (9), be equipped with apron (8) on support frame (9).

5. The hydraulic clamp for cutting the pump head of the high-pressure fuel pump according to claim 2, wherein: the first clamping part in the horizontal direction consists of a turntable connecting disc (4), a first locating seat base (13), a first new seat metal (12), a first pre-locating block (14) and a first deburring seat metal (15), the first locating seat base (13) is arranged on the inner side of the turntable connecting disc (4), the first new seat metal (12) is arranged on the upper end face of the first locating seat base (13), a locating key (32) is arranged in a rectangular groove between the first locating seat base (13) and the first new seat metal (12), the first deburring seat metal (15) is arranged on the inner side of the first new seat metal (12), two first pre-locating blocks (14) are arranged on two sides of the first deburring seat metal (15) and connected with the first deburring seat metal (15) through bolts for locating the pump head body (5) in the horizontal direction, and four supporting legs are arranged on one side of the first new seat metal (12), the inboard of supporting legs is equipped with the arc surface that prevents the pump head horizontal slip, be equipped with side gas tightness inspection hole (30) on the arc surface of two supporting legs of terminal surface under first new seat gold (12) respectively for detect pump head body (5) horizontal direction's location, first deburring seat gold (15) one side is equipped with monitoring devices, monitoring devices comprises first air supply pipe (16) and end cap (28), and is equipped with bottom gas tightness inspection hole (29) first deburring seat gold (15) bottom, workstation (1) top is equipped with pressure sensor (34), drilling cutter (35) and deburring cutter (36).

6. The hydraulic clamp for cutting the pump head of the high-pressure fuel pump according to claim 2, wherein: the second clamping part in the horizontal direction consists of a tailstock connecting disc, a second positioning seat base, a second new seat metal, second pre-positioning blocks and a second deburring seat metal, the second positioning seat base is arranged on the inner side of the tailstock connecting disc, the second new seat metal is arranged on the upper end face of the second positioning seat base, a positioning key (32) is arranged in a rectangular groove between the second positioning seat base and the second new seat metal, the second deburring seat metal is arranged on the inner side of the second new seat metal, two second pre-positioning blocks are arranged on two sides of the second deburring seat metal and connected with the second deburring seat metal through bolts for positioning the pump head body (5) in the horizontal direction, four supporting legs are arranged on one side of the second new seat metal, arc faces for preventing the horizontal sliding of the pump head are arranged on the inner sides of the supporting legs, side edge air tightness detection holes (30) are respectively arranged on the arc faces of the two supporting legs on the lower end face of the second new seat metal, a location for detecting pump head body (5) horizontal direction, second deburring seat gold one side is equipped with monitoring devices, monitoring devices comprises second air supply pipe and end cap (28), and second deburring seat gold bottom is equipped with bottom gas tightness inspection hole (29), workstation (1) top is equipped with pressure sensor (34), drilling cutter (35) and deburring cutter (36).

7. The hydraulic clamp for cutting the pump head of the high-pressure fuel pump according to claim 5, wherein: revolving stage connection pad (4) and tailstock connection pad set up respectively at deck (3) both ends, are connected with deck (3) through the bolt, and deck (3) the below is equipped with four anticreep landing blocks (33), revolving stage connection pad (4) one side is equipped with second inlet port (25), tailstock connection pad one side is equipped with first inlet port (11).

8. The hydraulic clamp for cutting the pump head of the high-pressure fuel pump according to claim 3, wherein: the sub-claw (6) is embedded in a rectangular groove of the sliding block pressure head (7), two supporting legs are arranged on one side of the sub-claw (6), and arc surfaces for preventing the pump head body (5) from sliding horizontally are arranged on the inner sides of the supporting legs.

9. The hydraulic clamp for cutting the pump head of the high-pressure fuel pump according to claim 3, wherein: be equipped with the wedge recess on the wedge face of slider pressure head (7), sliding block (31) both sides are equipped with the wedge arch, and the wedge arch inlays in the wedge recess, pushes away under the effect of jar (20) at the straight line, drives sliding block (31) and slides from top to bottom in the wedge recess, and slider pressure head (7) of both sides do reciprocating motion along the horizontal direction for the clamping of two station unilateral is tight and loosen.

10. The hydraulic clamp for cutting the pump head of the high-pressure fuel pump according to claim 1, wherein: the hydraulic fixture for the cutting machining of the high-pressure fuel pump head further comprises a blowing cleaning device, the blowing cleaning device is composed of a bent pipe (17), blowing heads (18), a third air supply pipe (19), a press buckle (21), an air pipe support (22) and a three-way pipe fitting (23), the third air supply pipe (19) is connected with the three-way pipe fitting (23) through the bent pipe (17), the press buckle (21) and the air pipe support (22) are fixedly installed on two sides of the large bottom plate (2), four blowing heads (18) are arranged on each side, and the blowing heads (18) are connected with the bent pipe (17) and the three-way pipe fitting (23) through nuts.