Hydraulic rotary pressing device special for heavy steering gear shell

Abstract

The invention relates to a hydraulic rotary pressing device special for a heavy steering gear shell, which comprises a cylinder body, a nut, a pressing block, a piston head, a piston rod, a rotary guide part, a steel ball, a path groove and a positioning block, a piston groove is designed in the middle of the lower end of the cylinder body, the piston head is slidably mounted in the piston groove, and the piston rod is mounted at the upper end of the piston head; the upper end of the piston rod slidably penetrates through the bottom of the upper end of a piston groove of the cylinder body, a pressing block is clamped at the upper end of the piston rod, the outer side of the pressing block is screwed at the end of the piston rod through a nut to be fixed, a plurality of positioning blocks are installed on the periphery of the upper end of the cylinder body, and the pressing block comprises a round body and trapezoid pressing heads. The device has the advantages of being ingenious in design, reasonable and compact in structure, high in universality, high in positioning accuracy, good in rigidity and capable of saving space and meeting production and machining requirements for parts of the type.

Description

Technical Field

[0001] The invention relates to the field of steering gear housing processing, and in particular to a hydraulic rotary pressing device dedicated to a heavy-duty steering gear housing. Background Art

[0002] As an important component of the steering system, the heavy-duty steering gear housing must meet high standards in design, material selection, manufacturing process and quality control. Whether using high-strength cast iron or aluminum alloy, the ultimate goal is to ensure the stability and durability of the steering system and meet the use requirements of heavy-duty vehicles under various working conditions. The manufacturing of heavy-duty steering gear housings usually adopts a casting process, in which liquid metal is cast into shape through a precision mold. It is then cooled, cleaned and machined to ensure that the housing has precise dimensions and good surface finish. In recent years, the machining industry has placed increasingly higher requirements on the machining accuracy and efficiency of heavy-duty steering gear housings, and with the continuous increase in labor costs, the traditional positioning and clamping methods have high labor intensity, and the efficiency of loading and unloading parts and the clamping force cannot meet the positioning requirements. Summary of the invention

[0003] In order to solve the above technical problems, the present invention proposes a hydraulic rotary clamping device dedicated to a heavy-duty steering gear housing, which has an ingenious design and a reasonable and compact structure and meets the production and processing requirements of such products.

[0004] The technical solution of the present invention: A hydraulic rotary clamping device specially used for a heavy-duty steering gear housing, the heavy-duty steering gear housing comprises a vertical flow channel and a transverse flow channel, the upper and lower ends of the vertical flow channel are respectively connected to the upper and lower end faces, one end of the transverse flow channel is connected to its corresponding end face, and the transverse flow channel is connected to the vertical flow channel near the middle position; a plurality of positioning grooves are arranged around the outer side of the lower port of the vertical flow channel, and a boss is arranged above the corresponding positioning groove on the inner side of the lower port of the vertical flow channel; it comprises a cylinder body, a nut, a pressure block, a piston head, a piston rod, a rotating guide part, a steel ball, a path groove, and a positioning block. A piston groove is designed in the middle of the lower end of the cylinder body, the piston head is slidably installed in the piston groove, a piston rod is installed at the upper end of the piston head, and the upper end of the piston rod slides through the upper end bottom of the piston groove of the cylinder body, a pressure block is clamped on the upper end of the piston rod, and the outer side of the pressure block is fixed to the end of the piston rod by screwing a nut, and a plurality of positioning blocks are installed around the upper end of the cylinder body, the pressure block comprises a circular body and a trapezoidal pressure head, and a plurality of trapezoidal pressure heads are designed around the circular body; the piston A circular groove is designed in the middle of the lower end of the head, and a plurality of semi-cylindrical grooves are arranged around the inner side of the lower port of the circular groove, and the bottom of the semi-cylindrical groove is set as a hemispherical bottom; the rotating guide part comprises a fixed plate and a vertical shaft, a vertical shaft is installed in the middle of the upper end of the fixed plate, and a plurality of path grooves are designed on the outer side of the vertical shaft; the vertical shaft of the rotating guide part slides in the circular groove of the piston head, half of the steel ball is located in the semi-cylindrical groove, and the other half of the steel ball is located in the path groove on the rotating guide part on the corresponding side; the path groove comprises an upper vertical semi-circular groove, a lower vertical semi-circular groove and a spiral semi-circular groove, and the lower end of the upper vertical semi-circular groove is connected to the lower vertical semi-circular groove through the spiral semi-circular groove; the upper end of the upper vertical semi-circular groove is connected to the upper end face of the vertical shaft; the positioning block is correspondingly supported in the positioning groove of the heavy-duty steering gear housing, and the trapezoidal pressure head of the pressure block is staggered with the boss of the heavy-duty steering gear housing when it extends into the vertical flow channel, and the piston rod will rotate a certain angle when it moves downward with the pressure block and the trapezoidal pressure head of the pressure block is pressed on the boss accordingly. An annular groove is also designed on the outer side of the mouth of the middle circular groove 42 at the lower end of the piston head. An annular pressing block is installed in the annular groove. The inner side of the upper end of the annular pressing block is blocked at the lower end of the semi-cylindrical groove.

[0005] The positioning groove is a V-shaped groove, the positioning block is configured as an isosceles trapezoidal block which is narrow at the top and wide at the bottom, and a plurality of sawtooth-shaped teeth are designed on the inclined surfaces on both sides of the upper end of the positioning block.

[0006] The positioning grooves are designed with three, the bosses are designed with three, the positioning blocks are designed with three, the steel balls are designed with three, the path grooves are designed with three, the semi-cylindrical grooves are designed with three, and the trapezoidal pressing heads of the pressing block are designed with three.

[0007] The upper end of the pressing block is designed with a hemispherical groove, and the lower end of the nut is designed to be a downwardly convex hemispherical protrusion, and the nut is locked with the hemispherical groove of the pressing block through the downwardly convex hemispherical protrusion.

[0008] The pressing block is also designed with three threaded holes around its periphery. Positioning screws are rotatably installed in the threaded holes. After the positioning screws are screwed into the threaded holes, they press against the outer side of the upper end of the piston rod.

[0009] The lower end of the cylinder body is sealed and installed on the hydraulic workbench of the machine tool machining center. A horizontal oil channel and a vertical oil channel are designed on one side of the cylinder body. The outer side of the horizontal oil channel is connected to the outer side surface of the cylinder body, and the inner side of the horizontal oil channel is connected to the upper end of the piston groove. The upper end of the vertical oil channel is connected to the horizontal oil channel near the mouth, and the lower end of the horizontal oil channel is connected to the lower end surface of the cylinder body. Two hydraulic oil holes are designed on the hydraulic workbench, one hydraulic oil hole is connected to the lower end of the horizontal oil channel, and the other hydraulic oil hole is connected to the mouth of the piston groove; the fixed plate of the rotating guide part is fixed on the hydraulic workbench.

[0010] The advantages of the present invention are ingenious design, reasonable and compact structure, strong versatility for such parts, high positioning accuracy, good rigidity, space saving, and meeting production and processing requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional schematic diagram of the present invention.

[0012] Figure 2 It is a partial cross-sectional schematic diagram of the present invention.

[0013] Figure 3 It is a top view schematic diagram of the present invention.

[0014] Figure 4 It is a bottom view schematic diagram of the present invention.

[0015] Figure 5 Schematic diagram of the rotary guide portion of the present invention.

[0016] Figure 6 It is a three-dimensional schematic diagram of the heavy-duty steering gear housing of the present invention. Figure 1 .

[0017] Figure 7 It is a three-dimensional schematic diagram of the heavy-duty steering gear housing of the present invention. Figure 2 .

[0018] Figure 8 yes Figure 6 Schematic diagram of top view cross section.

[0019] Fig. 9 It is a schematic diagram of the heavy-duty steering gear housing (blank) after clamping in the present invention. DETAILED DESCRIPTION

[0020] Refer to the attached Figure 1-9A hydraulic rotary clamping device dedicated to a heavy-duty steering gear housing, the heavy-duty steering gear housing includes a vertical flow channel 101 and a transverse flow channel 102, the upper and lower ends of the vertical flow channel 101 are respectively connected to the upper and lower end faces, one end of the transverse flow channel 102 is connected to its corresponding end face, and the transverse flow channel 102 is connected to the vertical flow channel 101 near the middle position; a plurality of positioning grooves 103 are arranged around the outer side of the lower end portion of the vertical flow channel 101, and a boss 104 is arranged above the corresponding positioning groove 103 on the inner side of the lower end portion of the vertical flow channel 101; it includes a cylinder body 1, a nut 2, a pressing block 3, A piston head 4, a piston rod 5, a rotating guide part 6, a steel ball 7, a path groove 8, and a positioning block 9 are designed with a piston groove 10 in the middle of the lower end of the cylinder body 1. The piston head 4 is slidably installed in the piston groove 10. A piston rod 5 is installed on the upper end of the piston head 4. The upper end of the piston rod 5 slides through the upper bottom of the piston groove 10 of the cylinder body 1. A pressure block 3 is clamped on the upper end of the piston rod 5 and the outer side of the pressure block 3 is fixed to the end of the piston rod 5 by a nut 2. A plurality of positioning blocks 9 are installed around the upper end of the cylinder body 1. The pressure block 3 includes a circular main body and a trapezoidal pressure head 31. A plurality of trapezoidal pressure heads are designed around the circular main body. The piston head 4 is provided with a circular groove 42 in the middle of the lower end, and a plurality of semi-cylindrical grooves are arranged around the inner side of the lower end of the circular groove 42, and the bottom of the semi-cylindrical groove is arranged as a hemispherical bottom; the rotating guide part 6 comprises a fixed plate and a vertical shaft 61, a vertical shaft 61 is installed in the middle of the upper end of the fixed plate, and a plurality of path grooves 8 are arranged on the outer side of the vertical shaft 61; the vertical shaft 61 of the rotating guide part 6 is slidably located in the circular groove 42 of the piston head 4, half of the steel ball 7 is located in the semi-cylindrical groove, and the other half of the steel ball 7 is located in the path groove 8 on the rotating guide part 6 on the corresponding side; the path The groove 8 includes an upper vertical semicircular groove, a lower vertical semicircular groove and a spiral semicircular groove. The lower end of the upper vertical semicircular groove is connected to the lower vertical semicircular groove through the spiral semicircular groove; the upper end of the upper vertical semicircular groove is connected to the upper end surface of the vertical shaft 61; the positioning block 9 is supported in the positioning groove 103 of the heavy-duty steering gear housing. When the trapezoidal pressure head 31 of the pressure block 3 is inserted into the vertical flow channel 101, it is staggered with the boss 104 of the heavy-duty steering gear housing. When the piston rod 5 moves downward with the pressure block 3, it will rotate a certain angle and the trapezoidal pressure head 31 of the pressure block 3 will be pressed on the boss 104. The outer side of the mouth of the middle circular groove 42 at the lower end of the piston head 4 is also designed with an annular groove, and an annular pressure block 41 is installed in the annular groove. The inner side of the upper end of the annular pressure block 41 is blocked at the lower end of the semi-cylindrical groove. The annular pressure block design prevents the steel ball from falling off, which is a safety design.

[0021] The positioning groove 103 is a V-shaped groove, the positioning block 9 is configured as an isosceles trapezoidal block that is narrow at the top and wide at the bottom, and a plurality of sawtooth-shaped teeth are designed on the inclined surfaces on both sides of the upper end of the positioning block 9. This design ensures stable positioning.

[0022] The positioning grooves 103 are designed with three, the bosses 104 are designed with three, the positioning blocks 9 are designed with three, the steel balls 7 are designed with three, the path grooves 8 are designed with three, the semi-cylindrical grooves are designed with three, and the trapezoidal pressure heads 31 of the pressure block 3 are designed with three. All of them are designed with three, which is designed to match the structure of the heavy steering gear housing itself, and the guiding action, positioning and clamping are more accurate and stable.

[0023] The upper end of the pressing block 3 is designed with a hemispherical groove, and the lower end of the nut 2 is designed to be a downwardly convex hemispherical protrusion. The nut 2 is locked with the hemispherical groove of the pressing block 3 through the downwardly convex hemispherical protrusion. This design ensures that the nut and the upper end of the pressing block are effectively locked. The upper end of the piston rod is designed with an annular step, and the pressing block is just sleeved on the annular step. The piston rod at the upper end of the annular step is designed as a threaded rod for screwing into the nut. This is the prior art and the present invention is briefly described.

[0024] The pressing block 3 is also designed with three threaded holes around its periphery, and positioning screws are rotatably installed in the threaded holes. After the positioning screws are screwed into the threaded holes, they press against the outer side of the upper end of the piston rod 5. There are also corresponding positioning grooves designed on the piston rod, and the positioning screws just press against the positioning grooves on the corresponding side. Ensure that the angle design of the pressure head of the pressing block is consistent with the path groove below. In the present invention, three path grooves are designed, and the pressure head can be rotated 60 degrees to achieve misalignment or a position above or below the boss position.

[0025] The lower end of the cylinder body 1 is sealed and installed on the hydraulic workbench of the machine tool machining center. A transverse oil channel and a vertical oil channel are designed on one side of the cylinder body 1. The outer side of the transverse oil channel is connected to the outer side of the cylinder body 1, and the inner side of the transverse oil channel is connected to the upper end of the piston groove 10. The upper end of the vertical oil channel is connected to the transverse oil channel near the mouth, and the lower end of the transverse oil channel is connected to the lower end surface of the cylinder body 1. Two hydraulic oil holes are designed on the hydraulic workbench, one hydraulic oil hole is connected to the lower end of the transverse oil channel, and the other hydraulic oil hole is connected to the mouth of the piston groove 10; the fixed plate of the rotating guide part 6 is fixed on the hydraulic workbench. The port where the outer side of the transverse oil channel is connected to the outer side of the cylinder body is the process port, which is usually sealed by a plug. A seal is also used between the cylinder body and the hydraulic workbench, and a seal is also used between the upper end of the piston rod and the cylinder body, and between the piston head and the piston groove in the cylinder body. Sealing rings are usually used for sealing. This is the prior art, and the present invention is briefly described. Fig. 9 In order to facilitate the placement of the heavy-duty steering gear housing on the hydraulic workbench, a positioning column is installed. The positioning column is located in the V-groove on the outside of the heavy-duty steering gear housing. A quick-positioning directional positioning column is designed according to the structure of the heavy-duty steering gear housing itself to assist operators in quickly and conveniently placing the heavy-duty steering gear housing blank to be processed.

[0026] When the present invention is used, the product of the present invention is installed on the hydraulic working table, and the hydraulic working table at the lower end of the piston groove in the cylinder body starts to supply oil to the lower part of the piston head, pushing the piston head upward. During the upward movement of the piston head, under the action of the steel ball and the path groove, the piston head moves upward and rotates at a certain angle at the same time, and the pressure block rotates and rises under the action of the piston rod. After it is in place, the vertical oil passage of the heavy-duty steering gear housing can be inserted from the pressure block. During the insertion process, the trapezoidal pressure head of the pressure block staggers the convex platform in the vertical oil passage of the heavy-duty steering gear housing, and makes the positioning groove of the heavy-duty steering gear housing engage with the positioning block; at this time, the hydraulic The pressing workbench supplies oil to the top of the piston head through the vertical oil passage and the horizontal oil passage, and at the same time, the hydraulic oil under the piston head is depressurized to control the piston head to move downward. The piston head then rotates in the opposite direction under the action of the steel ball and the path groove, and rotates the pressing block above at a set angle, so that the trapezoidal pressing head of the pressing block is pressed on the boss in the vertical oil passage of the corresponding heavy-duty steering gear housing, so as to clamp it quickly, accurately and effectively. In this way, the internal clamping of the heavy-duty steering gear housing can be completed without interfering with the processing operation on the outside of the heavy-duty steering gear housing, which is safe and reliable. Disassembly can be done by simply reversing the operation.

Claims

1. A hydraulic rotary clamping device dedicated to a heavy-duty steering gear housing, the heavy-duty steering gear housing comprises a vertical flow channel and a transverse flow channel, the upper and lower ends of the vertical flow channel are respectively connected to the upper and lower end faces, one end of the transverse flow channel is connected to its corresponding end face, and the transverse flow channel is connected to the vertical flow channel near the middle position; a plurality of positioning grooves are arranged around the outer side of the lower end portion of the vertical flow channel, and a boss is arranged above the corresponding positioning groove on the inner side of the lower end portion of the vertical flow channel; characterized in that, It includes a cylinder body, a nut, a pressure block, a piston head, a piston rod, a rotating guide part, a steel ball, a path groove, and a positioning block. A piston groove is designed in the middle of the lower end of the cylinder body, and the piston head is slidably installed in the piston groove. A piston rod is installed on the upper end of the piston head. The upper end of the piston rod slides through the upper end bottom of the piston groove of the cylinder body. A pressure block is clamped on the upper end of the piston rod, and the outer side of the pressure block is fixed to the end of the piston rod by screwing the nut. A plurality of positioning blocks are installed around the upper end of the cylinder body. The pressure block includes a circular main body and a trapezoidal pressure head, and a plurality of trapezoidal pressure heads are designed around the circular main body; a circular groove is designed in the middle of the lower end of the piston head, and a plurality of semi-cylindrical grooves are arranged around the inner side of the lower end of the circular groove, and the bottom of the semi-cylindrical groove is arranged as a hemispherical bottom; the rotating guide part includes a fixed plate and a vertical shaft, a vertical shaft is installed in the middle of the upper end of the fixed plate, and a plurality of path grooves are designed on the outer side of the vertical shaft; the rotating guide part The vertical shaft slides in the circular groove of the piston head, half of the steel ball is located in the semi-cylindrical groove, and the other half of the steel ball is located in the path groove on the rotating guide part on the corresponding side; the path groove includes an upper vertical semi-circular groove, a lower vertical semi-circular groove and a spiral semi-circular groove, the lower end of the upper vertical semi-circular groove is connected to the lower vertical semi-circular groove through the spiral semi-circular groove; the upper end of the upper vertical semi-circular groove is connected to the upper end surface of the vertical shaft; the positioning block is correspondingly supported in the positioning groove of the heavy-duty steering gear housing, and the trapezoidal pressure head of the pressure block is staggered with the boss of the heavy-duty steering gear housing when it extends into the vertical flow channel. When the piston rod moves downward and presses down with the pressure block, it will rotate a certain angle and the trapezoidal pressure head of the pressure block will be pressed on the boss accordingly; an annular groove is also designed on the outside of the middle circular groove mouth at the lower end of the piston head, and an annular pressure block is installed in the annular groove, and the inner side of the upper end of the annular pressure block is blocked at the lower port of the semi-cylindrical groove.

2. A hydraulic rotary clamping device for a heavy-duty steering gear housing according to claim 1, characterized in that: The positioning groove is a V-shaped groove, the positioning block is configured as an isosceles trapezoidal block which is narrow at the top and wide at the bottom, and a plurality of sawtooth-shaped teeth are designed on the inclined surfaces on both sides of the upper end of the positioning block.

3. A hydraulic rotary clamping device for a heavy-duty steering gear housing according to claim 1, characterized in that: The positioning grooves are designed with three, the bosses are designed with three, the positioning blocks are designed with three, the steel balls are designed with three, the path grooves are designed with three, the semi-cylindrical grooves are designed with three, and the trapezoidal pressing heads of the pressing block are designed with three.

4. A hydraulic rotary clamping device for a heavy-duty steering gear housing according to claim 1, characterized in that: The upper end of the pressing block is designed with a hemispherical groove, and the lower end of the nut is designed to be a downwardly convex hemispherical protrusion, and the nut is locked with the hemispherical groove of the pressing block through the downwardly convex hemispherical protrusion.

5. The hydraulic rotary clamping device for a heavy-duty steering gear housing according to claim 1, characterized in that: The pressing block is also designed with three threaded holes around its periphery. Positioning screws are rotatably installed in the threaded holes. After the positioning screws are screwed into the threaded holes, they press against the outer side of the upper end of the piston rod.

6. A hydraulic rotary clamping device for a heavy-duty steering gear housing according to claim 1, characterized in that: The lower end of the cylinder body is sealed and installed on the hydraulic workbench of the machine tool machining center. A horizontal oil channel and a vertical oil channel are designed on one side of the cylinder body. The outer side of the horizontal oil channel is connected to the outer side surface of the cylinder body, and the inner side of the horizontal oil channel is connected to the upper end of the piston groove. The upper end of the vertical oil channel is connected to the horizontal oil channel near the mouth, and the lower end of the horizontal oil channel is connected to the lower end surface of the cylinder body. Two hydraulic oil holes are designed on the hydraulic workbench, one hydraulic oil hole is connected to the lower end of the horizontal oil channel, and the other hydraulic oil hole is connected to the mouth of the piston groove; the fixed plate of the rotating guide part is fixed on the hydraulic workbench.

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