WO2020253033A1

WO2020253033A1 - Turnover fixture for machining of intake manifold

Info

Publication number: WO2020253033A1
Application number: PCT/CN2019/115534
Authority: WO
Inventors: 钟建斌
Original assignee: 钟建斌
Priority date: 2019-06-21
Filing date: 2019-11-05
Publication date: 2020-12-24
Also published as: CN110238686A; CN110238686B

Abstract

A turnover fixture for machining of an intake manifold comprises a base plate (11). A pair of bilaterally symmetrical support lugs (12) are fixed on the bottom plate (11). A turnover shaft (13) is hinge-connected between the two support lugs (12). A fixture base (2) for positioning an intake manifold (9) is fixed above the turnover shaft (13). A pair of pressing mechanisms (3) are bilaterally provided on the fixture base (2). The intake manifold (9) is held between the two pressing mechanisms (3) and the fixture base (2). A driving mechanism (4) for driving the turnover shaft (13) to turn is provided on the bottom plate (11). The turnover fixture fixes the intake manifold in place and can turnover, such that a flange face for connecting the intake manifold to a cylinder head and a flange face for connecting the intake manifold to a throttle valve body can be completed in a single machining process, thereby effectively improving the efficiency of machining the intake manifold by avoiding the time-consuming processes such as multiple fixing and transferring.

Description

Turnover fixture for processing intake manifold

Technical field

The invention relates to the technical field of intake manifolds, in particular to an overturning fixture for intake manifold processing.

Background technique

The function of the intake manifold is to distribute the air and fuel mixture from the carburetor or throttle body to the intake ports of each cylinder. When the engine is working, the air pressure of the intake manifold fluctuates greatly, which affects the intake manifold. The sealing performance is required to require higher flatness and smoothness of the flange surface of the cylinder head connected with the cylinder head and the flange surface of the throttle body connected with the throttle body. However, the existing When the cylinder head is combined with the flange surface and the throttle body and the flange surface are milled, two processes are generally required, which requires two clamping and transfer, and the processing efficiency of the intake manifold is relatively low.

Summary of the invention

The purpose of the present invention is to overcome the shortcomings of the prior art and provide a turning fixture for processing the intake manifold, which can be turned over on the premise of fixing the intake manifold, and can be used to join the cylinder head of the intake manifold. The flange surface and the throttle body and the flange surface are processed at one time, which avoids the time wasted for two clamping and transfer, and effectively improves the processing efficiency of the intake manifold.

The solution of the present invention to solve the technical problem is:

An overturning fixture for processing an intake manifold includes a bottom plate on which a pair of symmetrically arranged lugs are fixed, and a turning shaft is hinged between the two lugs, and the turning shaft is fixed for positioning the intake air The clamp base of the manifold, the clamp base is provided with a pair of left and right pressing mechanisms, and the intake manifold is clamped between the two pressing mechanisms and the clamp base; the bottom plate is provided with a drive for driving the turning shaft to turn over mechanism.

The intake manifold includes a cylinder head coupling flange surface, a plurality of manifolds and a throttle body coupling flange surface, and a plurality of mounting holes are formed on the cylinder head coupling flange surface;

The fixture base includes a vertically arranged base plate. Two positioning plates are fixed on the upper end of the base plate. Each positioning plate is fixed with a positioning rod. A pair of left and right "L"s are fixed on the lower end of the base plate. Font-shaped feet, the feet are formed with shaft holes penetrating in the left and right directions, and the two shaft holes are respectively inserted and fixed at the two ends of the turning shaft;

The back of the cylinder head coupling flange surface is pressed against two positioning plates, and two positioning rods are inserted and sleeved in two of the mounting holes.

The pressing mechanism includes a vertically arranged guide shaft, a connecting sleeve is sleeved on the guide shaft, a helical gear is fixed at the lower end of the connecting sleeve, the helical gear is meshed with a helical rack, and the helical rack is connected to the cylinder through the connecting arm. The piston rod is fixedly connected, and a pressure plate is fixed on the outer wall of the upper end of the connecting sleeve, and the pressure plate is pressed against the outer wall of a corresponding outer manifold; both ends of the guide shaft are respectively fixed on the positioning plate and the supporting plate , The support plate and the cylinder are fixed on the base plate.

The driving mechanism includes a gear fixed on the outer wall of the turning shaft, the gear is meshed with a rack arranged in the front and rear direction, and two sliding blocks arranged symmetrically are fixed on the rack, and each sliding block is inserted in a corresponding sliding block. On the rail, a connecting part is fixed on one of the sliding blocks, and the connecting part is fixedly connected with the piston rod of the oil cylinder, and the oil cylinder and the sliding rail are fixed on the bottom plate.

The included angle between the connecting flange surface of the cylinder head and the connecting flange surface of the throttle body is 90°;

The lower end surface of the support foot is pressed against the bottom plate, and the distance L1 between the center of the shaft hole and the lower end surface of the support foot is equal to the distance L2 between the center of the shaft hole and the rear surface of the base plate.

A card slot is formed on the pressing plate, and the card slot is inserted and sleeved on the manifold.

The helical rack is formed with a guide limit protrusion, the guide limit protrusion is inserted into the guide limit seat, and the guide limit seat is fixed on the base plate.

The outstanding effect of the present invention is that compared with the prior art, it can be turned over on the premise of fixing the intake manifold, and can connect the flange surface of the cylinder head of the intake manifold and the flange of the throttle body. The surface is processed at one time, avoiding the wasted time of two clamping and transferring, and effectively improving the processing efficiency of the intake manifold.

Description of the drawings

Figure 1 is a schematic diagram of the structure of the present invention;

Figure 2 is a schematic diagram of the structure of Figure 1 with the intake manifold hidden;

Figure 3 is a top view of the present invention;

Figure 4 is a left side view of the present invention;

Figure 5 is a schematic diagram of the assembly of components such as the rack and slider of the present invention;

Figure 6 is a front view of the clamp base of the present invention.

Detailed ways

For example, as shown in Figures 1 to 6, a turning fixture for processing an intake manifold includes a bottom plate 11 on which a pair of symmetrically arranged lugs 12 are fixed, one of the two lugs 12 A turning shaft 13 is hinged in between. The turning shaft 13 is fixed with a clamp base 2 for positioning the intake manifold 9. A pair of left and right pressing mechanisms 3 are provided on the clamp base 2, and the intake manifold 9 is clamped. Between the two pressing mechanisms 3 and the clamp base 2; the bottom plate 11 is provided with a driving mechanism 4 that drives the turning shaft 13 to turn over.

Furthermore, the intake manifold 9 includes a cylinder head coupling flange surface 91, a plurality of manifolds 92, and a throttle body coupling flange surface 93. The cylinder head coupling flange surface 91 is formed with a plurality of installations. Hole 94;

The clamp base 2 includes a vertically arranged base plate 21. Two positioning plates 22 are fixed on the upper end of the base plate 21. Each positioning plate 22 is fixed with a positioning rod 23. The lower end of the base plate 21 is fixed with a pair of positioning plates 22. L-shaped supporting legs 24 are provided on the left and right sides, and the supporting legs 24 are formed with shaft holes 241 penetrating in the left and right directions, and the two shaft holes 241 are respectively inserted and fixed at both ends of the turning shaft 13;

The back of the cylinder head coupling flange surface 91 is pressed against the two positioning plates 22, and the two positioning rods 23 are inserted and sleeved in the two mounting holes 94.

Furthermore, the pressing mechanism 3 includes a vertically arranged guide shaft 31, a connecting sleeve 32 is sleeved on the guide shaft 31, a helical gear 33 is fixed at the lower end of the connecting sleeve 32, and the helical gear 33 engages with a helical gear. The rack 34, the helical rack 34 is fixedly connected to the piston rod of the cylinder 36 through the connecting arm 35, a pressure plate 37 is fixed on the outer wall of the upper end of the connecting sleeve 32, and the pressure plate 37 is pressed against a corresponding outer manifold 92 The two ends of the guide shaft 31 are respectively fixed on the positioning plate 22 and the supporting plate 38, and the supporting plate 38 and the air cylinder 36 are fixed on the base plate 21.

Furthermore, the driving mechanism 4 includes a gear 41 fixed on the outer wall of the turning shaft 13, and the gear 41 is engaged with a rack 42 arranged in the front and rear direction. Two sliding blocks 43 arranged symmetrically are fixed on the rack 42. Each slider 43 is inserted and sleeved on a corresponding slide rail 44, one of the sliders 43 is fixed with a connecting portion 45, the connecting portion 45 is fixedly connected with the piston rod of the cylinder 46, and the cylinder 46 and the slide rail 44 are fixed on the bottom plate 11 on.

Furthermore, the included angle between the connecting flange surface 91 of the cylinder head and the connecting flange surface 93 of the throttle body is 90°;

The lower end surface of the leg 24 is pressed against the bottom plate 11, and the distance L1 between the center of the shaft hole 241 and the lower end surface of the leg 24 is equal to the distance L2 between the center of the shaft hole 241 and the rear side surface of the base plate 21.

Furthermore, a slot 371 is formed on the pressing plate 37, and the slot 371 is inserted and sleeved on the manifold 92.

Furthermore, the helical rack 34 is formed with a guiding and limiting protrusion 341, the guiding and limiting protrusion 341 is inserted into the guiding and limiting seat 39, and the guiding and limiting seat 39 is fixed on the base plate 21.

Working principle: First, fix the bottom plate 11 on the processing equipment (such as a machining center); second, press the cylinder head coupling flange surface 91 of the intake manifold 9 against the positioning plate 22, with two mounting holes 94 is inserted into the positioning rod 23 as a positioning hole; third, the extension of the piston rod of the cylinder 36 drives the helical rack 34 to move forward, the helical rack 34 drives the helical gear 33 to rotate, and the helical gear 33 drives the connecting sleeve 32 to rotate and connect The sleeve 32 drives the pressure plate 37 to rotate and press against the outer wall of the intake manifold 92. When the pressure plate 37 is blocked by the intake manifold 92 and cannot continue to rotate, the helical rack 34 continues to move forward to drive the helical gear 33 along the guide The shaft 31 moves forward, so that the pressure plate 37 provides a backward pressure force on the intake manifold while providing a downward pressure force, thereby effectively fixing the intake manifold on the fixture base; fourth, the tool of the processing equipment Process the cylinder head coupling flange surface 91. When the cylinder head coupling flange surface 91 is processed, the piston rod of the cylinder 46 stretches to drive the connecting part 45 forward, and the connecting part 45 drives the rack 42 along the slide rail through the slider 43 44 moves forward, the rack 42 drives the gear 41 to rotate, and the gear 41 drives the fixture base and the intake manifold to flip through the flip shaft. When the back side of the base plate 21 is flipped and pressed against the bottom plate 11, it just flips 90 degrees. And at this time, the throttle body joint flange surface 93 is set just upwards, and then the tool of the processing equipment processes the throttle body joint flange surface 93, so that the intake manifold is clamped once to complete the cylinder head joint method The flange surface 91 and the throttle body are combined with the processing of the flange surface 93.

Finally, the above embodiments are only used to illustrate the present invention, but not to limit the present invention. Those of ordinary skill in the relevant technical field can also make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions also belong to the scope of the present invention, and the patent protection scope of the present invention should be defined by the claims.

Claims

An overturning fixture for processing an intake manifold, comprising a bottom plate (11), characterized in that: a pair of symmetrical lugs (12) are fixed on the bottom plate (11), between the two lugs (12) A turning shaft (13) is hinged, and a fixture base (2) for positioning the intake manifold (9) is fixed on the turning shaft (13). The fixture base (2) is provided with a pair of left and right pressing mechanisms ( 3) The intake manifold (9) is clamped between the two pressing mechanisms (3) and the clamp base (2); the bottom plate (11) is provided with a driving mechanism for driving the turning shaft (13) to turn over (4).
A turnover fixture for processing an intake manifold according to claim 1, wherein the intake manifold (9) includes a cylinder head coupling flange surface (91), a plurality of manifolds (92) and The throttle body joint flange surface (93), and the cylinder head joint flange surface (91) is formed with multiple mounting holes (94);

The clamp base (2) includes a substrate (21) arranged vertically, and two positioning plates (22) arranged left and right are fixed on the upper end of the substrate (21), and a positioning rod (22) is fixed on each positioning plate (22). 23), the lower end of the base plate (21) is fixed with a pair of left and right "L" shaped legs (24), the legs (24) are formed with a shaft hole (241) penetrating in the left and right directions, and two shaft holes (241) Insert sleeves and fix them on both ends of the turning shaft (13);

The back of the cylinder head coupling flange surface (91) is pressed against the two positioning plates (22), and the two positioning rods (23) are inserted and sleeved in the two mounting holes (94).
A turnover fixture for processing intake manifolds according to claim 2, characterized in that: the pressing mechanism (3) comprises a guide shaft (31) arranged vertically, and the guide shaft (31) is sleeved with The connecting sleeve (32), the lower end of the connecting sleeve (32) is fixed with a helical gear (33), the helical gear (33) is meshed with a helical rack (34), and the helical rack (34) is connected with the connecting arm (35) The piston rod of the cylinder (36) is fixedly connected, and a pressure plate (37) is fixed on the outer wall of the upper end of the connecting sleeve (32), and the pressure plate (37) is pressed against the outer wall of a corresponding outer manifold (92) The two ends of the guide shaft (31) are respectively fixed on the positioning plate (22) and the supporting plate (38), and the supporting plate (38) and the air cylinder (36) are fixed on the base plate (21).
A turnover fixture for processing intake manifolds according to claim 1, characterized in that: the driving mechanism (4) comprises a gear (41) fixed on the outer wall of the turnover shaft (13), and the gear (41) meshes There is a rack (42) arranged in the front and rear directions, two sliding blocks (43) arranged symmetrically on the rack (42) are fixed, and each sliding block (43) is inserted and sleeved on a corresponding slide rail (44) Above, one of the sliders (43) is fixed with a connecting part (45), the connecting part (45) is fixedly connected with the piston rod of the oil cylinder (46), the oil cylinder (46) and the slide rail (44) are fixed on the bottom plate (11) on.
The turnover fixture for processing the intake manifold according to claim 2, characterized in that: the angle between the connecting flange surface (91) of the cylinder head and the connecting flange surface (93) of the throttle body Is 90°;

The lower end surface of the leg (24) is pressed against the bottom plate (11), and the distance L1 between the center of the shaft hole (241) and the lower end surface of the leg (24) is equal to the center of the shaft hole (241) and the base plate (21) The distance L2 between the rear sides.
The overturning fixture for processing an intake manifold according to claim 3, characterized in that: a clamping slot (371) is formed on the pressure plate (37), and the clamping slot (371) is inserted into the manifold (92) on.
A turnover fixture for processing intake manifolds according to claim 4, characterized in that: the helical rack (34) is formed with a guide limit protrusion (341), and the guide limit protrusion (341) is inserted The guide limit seat (39) is sleeved on the guide limit seat (39), and the guide limit seat (39) is fixed on the base plate (21).