Horizontal pressure maintaining clamp for front box body of gearbox

Abstract

The utility model discloses a gearbox front box body horizontal pressure maintaining clamp, and relates to the technical field of pressure maintaining clamps, the gearbox front box body horizontal pressure maintaining clamp comprises a bottom plate, four corresponding CSU oil pressure supporting cylinders are installed on the upper side of the bottom plate, two sequence valves are installed on the upper side of the bottom plate, and the two sequence valves are respectively connected with the four CSU oil pressure supporting cylinders. A clamp connecting valve is installed at the left end of the upper side of the bottom plate, five first CSY oil pressure supporting cylinders are installed on the upper side of the bottom plate, an energy accumulator is installed at the right end of the upper side of the bottom plate, five corresponding oil pressure lever cylinders are installed on the upper side of the bottom plate, and three corresponding rigid supporting nails are installed at the right end of the upper side of the bottom plate. The four corresponding supporting strips are fixed to the four corners of the upper side of the bottom plate, multi-face machining of the front box can be completed through one-time clamping, the number of tools and the clamping frequency are reduced, and therefore the machining precision is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure-maintaining fixtures, in particular to a horizontal pressure-maintaining fixture for a front box body of a gearbox. Background Art

[0002] The gearbox is a very important part of the car, and the front box is an important component of the gearbox. The machining size, form and position tolerance accuracy directly affect the overall quality and performance of the gearbox.

[0003] In the existing technology, the machining of the front housing of the gearbox adopts sequential processing. The workpiece processing needs to be completed on multiple sets of fixtures and manual clamping is used. The entire processing process is cumbersome and repeated clamping leads to serious deviations in dimensional accuracy and form and position tolerances, which affects product quality. Therefore, we propose a horizontal pressure-maintaining fixture for the front housing of the gearbox. Utility Model Content

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide a horizontal pressure-maintaining fixture for the front box of the gearbox, which can complete multi-faceted processing of the front box in one clamping, reducing the number of tooling and the number of clamping times, thereby ensuring processing accuracy and effectively solving the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a horizontal pressure-maintaining fixture for the front box of the gearbox, comprising a base plate, four corresponding CSU oil pressure support cylinders are installed on the upper side of the base plate, two sequence valves are installed on the upper side of the base plate, the two sequence valves are respectively connected to the four CSU oil pressure support cylinders, a fixture connecting valve is installed on the left end of the upper side of the base plate, five first CSY oil pressure support cylinders are installed on the upper side of the base plate, an accumulator is installed on the right end of the upper side of the base plate, five corresponding oil pressure lever cylinders are installed on the upper side of the base plate, three corresponding rigid support nails are installed on the right end of the upper side of the base plate, four corresponding support bars are fixed at the four corners of the upper side of the base plate, and two corresponding tensioning plates are installed on the sides of the four left and right support bars. A second CSY hydraulic support cylinder is installed on the side of the support bar, a flip arm is installed on the upper end of the support bar, and a third CSY hydraulic support cylinder is installed on the end of the flip arm. The gearbox front housing blank is placed on the upper side of the base plate, and the telescopic arms of all second CSY hydraulic support cylinders and all third CSY hydraulic support cylinders are inserted into the corresponding grooves set on the surface of the gearbox front housing blank, and the upper ends of all rigid support pins are in contact with the surface of the gearbox front housing blank. The hydraulic rod of the hydraulic lever cylinder is pressed on the surface of the gearbox front housing blank, and the telescopic arm of the first CSY hydraulic support cylinder is inserted into the corresponding groove set at the lower end of the surface of the gearbox front housing blank, and the gearbox front housing blank is supported by setting rigid support pins.

[0006] Furthermore, an elastic cylindrical pin and an elastic diamond pin are installed in the middle of the upper side of the base plate, and the surface of the gearbox front housing blank is pre-cast with pin hole positions corresponding to the elastic cylindrical pin and the elastic diamond pin, respectively. The elastic cylindrical pin and the elastic diamond pin are respectively clamped in the corresponding pin hole positions, and the gearbox front housing blank is aligned by setting the elastic cylindrical pin and the elastic diamond pin.

[0007] Furthermore, two corresponding guide plates are fixed to the right end of the upper side of the base plate, a guide shaft is fixed to the rear end of the upper side of the base plate, and the gearbox front housing blank is located between the guide shaft and the two guide plates. The gearbox front housing blank is limited by setting the guide shaft and the two guide plates.

[0008] Compared with the prior art, the beneficial effects of the present invention are as follows: the horizontal pressure-maintaining fixture for the front box of the gearbox has the following advantages:

[0009] This fixture is energy-efficient, flexible, easy to install, and offers strong, stable, and efficient clamping force. It avoids workpiece deformation caused by uneven manual clamping force, saving manpower and significantly improving processing efficiency. It also significantly enhances tooling positioning accuracy and stability, ensuring product quality. It also reduces the number of fixtures used, shortens manufacturing cycles, and enhances competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0011] Figure 2 This is a structural diagram of the front housing blank of the gearbox of the present invention.

[0012] In the figure: 1 sequence valve, 2 fixture connecting valve, 3 base plate, 4 CSU hydraulic support cylinder, 5 elastic cylindrical pin, 6 first CSY hydraulic support cylinder, 7 accumulator, 8 hydraulic lever cylinder, 9 rigid support pin, 10 second CSY hydraulic support cylinder, 11 flip arm, 12 third CSY hydraulic support cylinder, 13 tensioning plate, 14 guide plate, 15 guide shaft, 16 elastic diamond pin, 17 gearbox front housing blank, 18 support bar. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0014] See also Figure 1-2, this embodiment provides a technical solution: a horizontal pressure-maintaining fixture for the front box of the gearbox, including a base plate 3, four corresponding CSU oil pressure support cylinders 4 are installed on the upper side of the base plate 3, two sequence valves 1 are installed on the upper side of the base plate 3, and the two sequence valves 1 are respectively connected to the four CSU oil pressure support cylinders 4, a fixture connection valve 2 is installed on the left end of the upper side of the base plate 3, five first CSY oil pressure support cylinders 6 are installed on the upper side of the base plate 3, an accumulator 7 is installed on the right end of the upper side of the base plate 3, five corresponding oil pressure lever cylinders 8 are installed on the upper side of the base plate 3, and three are installed on the right end of the upper side of the base plate 3. Corresponding rigid support nails 9, four corresponding support bars 18 are fixed at the four corners of the upper side of the base plate 3, and two corresponding lacing plates 13 are installed on the sides of the four left and right support bars 18. The second CSY hydraulic support cylinder 10 is installed on the side of the support bar, and the upper end of the support bar 18 is installed with a flip arm 11. The end of the flip arm 11 is installed with a third CSY hydraulic support cylinder 12. The gearbox front housing blank 17 is placed on the upper side of the base plate 3. The telescopic arms of all the second CSY hydraulic support cylinders 10 and all the third CSY hydraulic support cylinders 12 are plugged into the gearbox front housing The upper ends of all the rigid support pins 9 are in contact with the surface of the gearbox front housing blank 17 in the corresponding grooves provided on the surface of the body blank 17. The hydraulic rod of the hydraulic lever cylinder 8 is pressed on the surface of the gearbox front housing blank 17. The telescopic arm of the first CSY hydraulic support cylinder 6 is inserted into the inner part of the corresponding groove provided on the lower end of the surface of the gearbox front housing blank 17. The middle part of the upper side of the bottom plate 3 is installed with an elastic cylindrical pin 5 and an elastic diamond pin 16. The surface of the gearbox front housing blank 17 is precast with pin holes corresponding to the elastic cylindrical pin 5 and the elastic diamond pin 16 respectively. The elastic cylindrical pin 5 and the elastic diamond pin 16 are respectively clamped in the corresponding pin hole positions. Two corresponding guide plates 14 are fixed to the right end of the upper side of the base plate 3. The rear end of the upper side of the base plate 3 is fixed with a guide shaft 15. The gearbox front housing blank 17 is located between the guide shaft 15 and the two guide plates 14. The gearbox front housing blank 17 is limited by setting the guide shaft 15 and the two guide plates 14. The gearbox front housing blank 17 is supported by setting the rigid support nail 9. The gearbox front housing blank 17 is supported by setting the elastic cylindrical pin 5 and the elastic diamond pin 16.

[0015] The working principle of the horizontal pressure-maintaining fixture for the front box of the gearbox provided by the present invention is as follows: first, the gearbox front housing blank 17 is placed on the base plate 3. At this time, the guide shaft 15 and the two guide plates 14 located on the base plate 3 limit it, which is convenient for finding the positioning point. At the same time, the gearbox front housing blank 17 has pre-cast pin hole positions, and the tooling positioning adopts this pin hole position. The elastic cylindrical pin 5 and the elastic diamond pin positioning 16 are used to limit the gearbox front housing blank 17 in the X direction, Y direction, X direction rotation, Y direction rotation, and Z direction rotation. Three rigid support pins 90 support the workpiece to limit the gearbox front housing blank 17 in the Z direction. By degrees, the gearbox front housing blank 17 is completely positioned. After the gearbox front housing blank 17 is positioned, the pressing rods of the five oil hydraulic lever cylinders 8 press its surface downward to press it in and out for preliminary fixation. After preliminary fixation, the four rotating arms 11 are turned to the working position. After the rotation is completed, they are fixed with bolts. After fixation, the four third CSY oil hydraulic support cylinders 12 installed at their ends are controlled to work so that the telescopic arms of the four third CSY oil hydraulic support cylinders 12 are inserted into the corresponding grooves set on the surface of the gearbox front housing blank 17. In this case, the gearbox front housing blank 17 can be further fixed, and then the four The second CSY hydraulic support cylinder 10 makes its telescopic arm also enter the corresponding groove set on the surface of the gearbox front housing blank 17. In this way, the fixed positioning of the gearbox front housing blank 17 can be completed. After fixed positioning, cutting can be carried out. When the workpiece is released, all the first CSY hydraulic support cylinders 6, the second CSY hydraulic support cylinders 10, and the third CSY hydraulic support cylinders are retracted, and all the hydraulic lever cylinders are loosened and tightened. The fastening bolts of the four sets of flip arms 11 are loosened, and the workpiece is flipped back to the initial position. The workpiece is lifted and lifted away from the top. A ribbed plate 13 is provided on the side of the fixture to enhance the rigidity of the fixture. This set of fixtures It is designed as a hydraulic pressure-maintaining clamp. When in use, a zero-leakage connection, a zero-leakage quick-plug connector, and a pressure gauge are provided on the top of the clamp to cooperate with the accumulator 7. At the same time, an external hydraulic station is used when in use. Each time the clamp is clamped or loosened, the hydraulic hose needs to be connected to the clamp connection valve 2. The external hydraulic station is started, and the hydraulic oil enters the clamp and then enters each oil cylinder and support cylinder to perform the action. At the same time, it also enters the accumulator 7 to store a part of the hydraulic oil. Its function is to pressurize the oil stored in the accumulator 7 into the inside of the clamp when there is a slight leakage in the clamp, so as to ensure the stability of the internal pressure of the clamp, thereby stabilizing the clamping force and supporting force.

[0016] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. The horizontal pressure-maintaining fixture for the front box of the gearbox is characterized by: The invention comprises a base plate (3), four corresponding CSU oil pressure support cylinders (4) are installed on the upper side of the base plate (3), two sequence valves (1) are installed on the upper side of the base plate (3), and the two sequence valves (1) are respectively connected to the four CSU oil pressure support cylinders (4), a fixture connection valve (2) is installed on the left end of the upper side of the base plate (3), five first CSY oil pressure support cylinders (6) are installed on the upper side of the base plate (3), an accumulator (7) is installed on the right end of the upper side of the base plate (3), five corresponding oil pressure lever cylinders (8) are installed on the upper side of the base plate (3), three corresponding rigid support nails (9) are installed on the right end of the upper side of the base plate (3), four corresponding support bars (18) are fixed at the four corners of the upper side of the base plate (3), and two corresponding tensioning plates (13) are installed on the sides of the four left and right support bars (18). A second CSY oil pressure support cylinder (10) is installed on the side of the gearbox, a flip arm (11) is installed on the upper end of the support bar (18), and a third CSY oil pressure support cylinder (12) is installed on the end of the flip arm (11). A gearbox front housing blank (17) is placed on the upper side of the base plate (3). The telescopic arms of all the second CSY oil pressure support cylinders (10) and all the third CSY oil pressure support cylinders (12) are inserted into the corresponding grooves set on the surface of the gearbox front housing blank (17). The upper ends of all the rigid support pins (9) are in contact with the surface of the gearbox front housing blank (17). The oil pressure rod of the oil pressure lever cylinder (8) is pressed on the surface of the gearbox front housing blank (17). The telescopic arm of the first CSY oil pressure support cylinder (6) is inserted into the inside of the corresponding groove set at the lower end of the surface of the gearbox front housing blank (17).

2. The horizontal pressure-maintaining fixture for the front housing of the gearbox according to claim 1, characterized in that: An elastic cylindrical pin (5) and an elastic diamond pin (16) are installed in the middle of the upper side of the base plate (3); a surface of the gearbox front housing blank (17) is precast with pin hole positions corresponding to the elastic cylindrical pin (5) and the elastic diamond pin (16); and the elastic cylindrical pin (5) and the elastic diamond pin (16) are respectively clamped in the corresponding pin hole positions.

3. The horizontal pressure-maintaining fixture for the front housing of the gearbox according to claim 1, characterized in that: Two corresponding guide plates (14) are fixed to the right end of the upper side of the base plate (3), a guide shaft (15) is fixed to the rear end of the upper side of the base plate (3), and the gearbox front housing blank (17) is located between the guide shaft (15) and the two guide plates (14).

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