Multi-shaft tapping combination machine for automobile hub shaft tube

Abstract

The invention discloses a multi-shaft tapping combination machine for an automobile hub axle tube, belongs to the technical field of automobile part machining, and aims at adjusting the overall height of a tapping combination mechanism by starting a height adjusting assembly to ensure that a drilling tool or a screw tap can be in accurate contact with a machining surface at the top of the automobile hub axle tube. According to the hole site distribution requirements of different automobile hub axle tubes, an adjusting motor of the horizontal adjusting assembly is started, the adjusting motor drives a rotating disc to rotate through a fixing shaft, an arc-shaped long-strip-shaped sliding hole in the rotating disc guides a rotating bearing of the tapping combined mechanism, and a tool apron slides in the radial direction along a sliding groove of a supporting frame through a sliding block; the four tapping combination mechanisms synchronously adjust the horizontal distance to meet the machining requirements of different hole position layouts, the traditional mode that a spindle box assembly is replaced or the positions of multiple sets of screw taps are manually and independently adjusted is abandoned, operation is convenient and fast, the adjusting precision is high, and efficient and high-precision machining operation on the automobile hub axle tube is facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile parts processing, in particular to a multi-spindle tapping combination machine for automobile hub shaft pipes. BACKGROUND

[0002] The end face threaded hole machining quality of the automobile hub shaft pipe directly affects the vehicle assembly precision and driving safety as a core load-bearing part for transmitting power and ensuring driving stability. In modern automobile manufacturing, the hub shaft pipe often needs to be machined with multiple sets of uniformly distributed or non-uniformly distributed threaded holes, and the tapping equipment is usually used to machine the automobile hub shaft pipe.

[0003] Currently, the installation reference of different specifications of hub shaft pipes is different, and the traditional fixture is usually designed for a single specification of workpiece, so that the fixture needs to be completely disassembled and replaced when the specification is changed, and the clamping and debugging time is long. Moreover, the spindle position of the traditional multi-spindle tapping equipment is usually fixed and rigidly arranged, and the machining of the threaded hole of a specific specification is realized by customizing the spindle box. When the flange diameter, threaded hole number or hole layout of the hub shaft pipe changes, the spindle box assembly needs to be completely replaced, or the position of multiple taps is manually adjusted independently, which is complex and has low adjustment accuracy, and is not conducive to efficient and high-precision machining of the automobile hub shaft pipe.

[0004] Therefore, the present application designs a multi-spindle tapping combination machine for automobile hub shaft pipes to solve the above problems. SUMMARY

[0005] The present application aims to provide a multi-spindle tapping combination machine for automobile hub shaft pipes to solve the problems of the traditional fixture being designed for a single specification of workpiece, the fixture needing to be completely disassembled and replaced when the specification is changed, and the clamping and debugging time being long. Moreover, the spindle position of the traditional multi-spindle tapping equipment is usually fixed and rigidly arranged, and when the flange diameter, threaded hole number or hole layout of the hub shaft pipe changes, the spindle box assembly needs to be completely replaced, or the position of multiple taps is manually adjusted independently, which is complex and has low adjustment accuracy.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0007] The utility model provides a kind of automobile wheel hub axle tube multi-axis tapping combination machine, including multi-axis tapping combination machine frame, the bottom of the multi-axis tapping combination machine frame is fixed with support base, support bearing is fixed on the support base, tapping combination workstation is rotatably connected in support bearing, deflection component is fixed in the inner ring of tapping combination workstation, dovetail groove is respectively opened in the both sides of the multi-axis tapping combination machine frame, sliding connection is achieved in the dovetail groove with slide, the side of the mutual far away of two slides is respectively fixed with support box, height adjusting assembly is installed in the support box, and the both ends of the height adjusting assembly are respectively fixed in the extension of the one side of multi-axis tapping combination machine frame, drive assembly is installed in the top of the support box, four transmission assemblies are installed in the bottom of the drive assembly and extend to support box, horizontal adjusting assembly is equipped in the lower position of the transmission assembly, and the horizontal adjusting assembly is fixed in the bottom of support box, support frame is equipped in the bottom of the horizontal adjusting assembly, and the support frame is fixedly installed in the lower of support box, four tapping combination mechanisms are slidably connected in the support frame, and the top of four tapping combination mechanisms penetrates horizontal adjusting assembly and is connected with the bottom of the corresponding four transmission assemblies, mounting seat is fixedly installed on the both sides of tapping combination workstation, clamping adjusting assembly is fixed on the mounting seat, and limit component is slidably connected in the clamping adjusting assembly.

[0008] As a further scheme of the utility model, the deflection component includes a gear ring fixed in the inner ring of the tapping combination workstation, a drive gear engaged in the gear ring, a first motor fixed on the drive gear, and a connecting plate fixed on the back of the multi-axis tapping combination machine frame below the first motor.

[0009] As a further scheme of the utility model, the height adjusting assembly includes a second motor, a screw rod fixed on the output shaft of the second motor, a nut threadedly connected to the screw rod, the nut is clamped in the support box, the bottom end of the screw rod penetrates the support box through the nut and is rotatably connected with a support sleeve, and the support sleeve and the second motor are fixed on the extension of the one side of the multi-axis tapping combination machine frame.

[0010] As a further scheme of the utility model, the drive assembly includes a drive motor installed on the support box, a driving gear fixed on the output shaft of the drive motor penetrating the top of the support box, four driven gears engaged with the driving gear, a connecting shaft fixedly connected in the driven gears, and the connecting shaft is rotatably connected in the support box through a shaft sleeve.

[0011] As a further scheme of the present application, the transmission assembly comprises a sliding sleeve, a sliding rod is sleeved in the sliding sleeve, a top universal joint is installed at the top end of the sliding rod, the top universal joint is movably connected with the bottom end of the connecting shaft, a bottom universal joint is installed at the bottom end of the sliding sleeve, and the bottom universal joint is movably connected with the top end of the tapping combination mechanism.

[0012] As a further scheme of the present application, the tapping combination mechanism comprises a tool holder, a tool is installed at the bottom of the tool holder, the tool comprises one of a drill or a tap, the top end of the tool holder is movably connected with the bottom universal joint, a rotary bearing is sleeved outside the tool holder, a sliding block is fixed below the outer ring of the rotary bearing, the support frame is designed in a cross shape, and sliding grooves are respectively formed at positions corresponding to the four sliding blocks, and the protruding portions on the two sides of the sliding block are slidably connected to the inner side walls of the sliding grooves.

[0013] As a further scheme of the present application, the horizontal adjustment assembly comprises a limiting bearing, the outer ring of the limiting bearing is fixed at the bottom of the support box, a rotating disc is sleeved in the limiting bearing, sliding holes are respectively formed at positions corresponding to the four tool holders on the rotating disc, the sliding holes are designed in an arc-shaped strip shape, the outermost end of the rotary bearing is slidably arranged in the sliding hole, a fixed shaft is fixed at the middle of the rotating disc, an adjustment motor is fixed at the top end of the fixed shaft, and the adjustment motor is installed inside the support box.

[0014] As a further scheme of the present application, the clamping adjustment assembly comprises a fixed frame, a worm is rotatably connected to the opening of the fixed frame through a shaft sleeve, a small motor is connected to one end of the worm, the small motor is installed outside the fixed frame, and three sliding grooves are formed in the fixed frame.

[0015] As a further scheme of the present application, the limiting assembly comprises a rotating ring, a plurality of bevel gears are arranged at positions close to the worm outside the rotating ring, the worm is meshingly connected with the bevel gears, the rotating ring is slidably arranged in the groove in the three protruding portions inside the fixed frame, a guide rod is fixed to the inner wall of the groove, through holes are respectively formed at positions corresponding to the three guide rods on the rotating ring, the through holes are designed in an arc-shaped strip shape, the guide rods are slidably arranged in the through holes, the guide rods are fixed with sliding columns outside, the sliding columns are slidably arranged in the sliding grooves, the cavities inside the sliding columns pass through the rotating ring, and the three sliding columns are fixed with a pressing plate at one end close to each other.

[0016] Compared with the prior art, the present application has the following advantages:

[0017] 1. This invention activates the second motor of the height adjustment component, which drives the lead screw to rotate. The nut threaded to the lead screw causes the support box to slide up and down along the dovetail groove on one side of the multi-axis tapping assembly frame, thereby adjusting the overall height of the tapping assembly mechanism. This ensures that the drill bit or tap can accurately contact the machining surface at the top of the automotive wheel hub axle tube. For different hole distribution requirements of automotive wheel hub axle tubes, the adjustment motor of the level adjustment component is activated. The adjustment motor drives the turntable to rotate via a fixed shaft. The arc-shaped elongated sliding hole on the turntable guides the rotating bearing of the tapping assembly mechanism, causing the tool holder to slide radially along the sliding groove of the support frame via a slider. Four... The tapping assembly mechanism synchronously adjusts the horizontal spacing. During the horizontal movement of the four tapping assemblies, their tops pull the sliding sleeves through the bottom universal joints, allowing the sliding rods inside the sleeves to extend. With the combined action of the top universal joints on the sliding rods and the bottom universal joints connected to the sliding sleeves, the positions of the four tapping assemblies can be adjusted synchronously without adjusting the position of the drive components. This adapts to the processing requirements of different hole layouts, eliminating the need for the traditional method of replacing the spindle box assembly or manually adjusting the positions of multiple sets of taps independently. The operation is convenient and the adjustment accuracy is high, which is beneficial for efficient and high-precision machining of automotive wheel hub tubes.

[0018] 2. This invention utilizes a small motor in the clamping adjustment assembly to drive a worm gear to rotate. Due to the meshing of the worm gear with the helical teeth on the outside of the rotating ring, the worm gear's rotational motion is converted into the rotating ring's circumferential deflection motion within the fixed frame. As the rotating ring deflects, its arc-shaped elongated through-hole slides along the guide rod inside the fixed frame's groove. The through-hole guides the sliding columns, causing them to move radially along the sliding groove of the fixed frame. The three sliding columns synchronously move towards the center, pushing the end pressure plate to tightly adhere to the workpiece surface, thus achieving centering and clamping of hub shafts of different diameters and preventing workpiece damage during processing. Offset; When adjusting the position of the automobile wheel hub axle tube, the first motor of the deflection assembly is started. The first motor drives the drive gear to rotate, and the drive gear meshes with the gear ring of the inner ring of the tapping assembly worktable, causing the tapping assembly worktable to rotate around the support bearing. The machining angle of the automobile wheel hub axle tube is adjusted, and it is transferred to the direct under the tapping assembly mechanism on the other side. Because the drill bit or tap is installed in the tool holder, the alternating cooperation of the tapping assembly mechanisms on both sides of the multi-axis tapping assembly frame achieves the combined machining purpose of drilling and tapping the automobile wheel hub axle tube, ensuring the continuity and efficiency of the machining operation. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the connection between the multi-axis tapping assembly frame and the support base of the present invention;

[0022] Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A;

[0023] Figure 4 This is a schematic diagram of the clamping adjustment assembly of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of the limiting component of the present invention;

[0025] Figure 6 This is a schematic diagram of the connection between the support box and the height adjustment component of the present invention;

[0026] Figure 7 This is a schematic diagram of the cross-section of the support box of the present invention;

[0027] Figure 8 This is a schematic diagram of the transmission component of the present invention;

[0028] Figure 9 This is a schematic diagram of the tapping assembly mechanism of the present invention.

[0029] The attached diagram lists the components represented by each number as follows:

[0030] 1. Multi-axis tapping assembly frame; 2. Support base; 3. Support bearing; 4. Tapping assembly worktable; 5. Deflection assembly; 501. Gear ring; 502. Drive gear; 503. First motor; 504. Connecting plate; 6. Dovetail groove; 7. Slide; 8. Support box; 9. Height adjustment assembly; 901. Second motor; 902. Lead screw; 903. Support sleeve; 904. Nut; 10. Drive assembly; 101. Drive motor; 102. Drive gear; 103. Driven gear; 104. Connecting shaft; 11. Transmission assembly; 111. Slide sleeve; 112. Slide rod; 113. Top universal joint; 114. 12. Bottom universal joint; 12. Horizontal adjustment assembly; 121. Limit bearing; 122. Turntable; 123. Fixed shaft; 124. Adjustment motor; 125. Sliding hole; 13. Support frame; 14. Tapping assembly; 141. Tool holder; 142. Tool; 143. Rotary bearing; 144. Slider; 15. Sliding groove; 16. Mounting base; 17. Clamping adjustment assembly; 171. Fixed frame; 172. Worm gear; 173. Small motor; 174. Sliding groove; 18. Limit assembly; 181. Rotary ring; 182. Helical gear; 183. Through hole; 184. Guide rod; 185. Sliding column; 186. Pressure plate. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figures 1-9 The present invention provides a technical solution:

[0033] A multi-axis tapping assembly machine for automobile wheel hub tubes includes a multi-axis tapping assembly frame 1, a support base 2 fixed at the bottom of the multi-axis tapping assembly frame 1, a support bearing 3 fixed on the support base 2, and a tapping assembly worktable 4 rotatably connected inside the support bearing 3. The support bearing 3 supports and limits the tapping assembly worktable 4, thereby improving the stability of the tapping assembly worktable 4 in moving the automobile wheel hub tube.

[0034] A deflection assembly 5 is fixed in the inner ring of the tapping assembly worktable 4. The deflection assembly 5 includes a gear ring 501, which is fixed in the inner ring of the tapping assembly worktable 4. A drive gear 502 meshes inside the gear ring 501. A first motor 503 is fixed on the drive gear 502. A connecting plate 504 is fixed outside the first motor 503 and is fixed below the back of the multi-axis tapping assembly frame 1. The drive gear 502 meshes with the gear ring 501 in the inner ring of the tapping assembly worktable 4, causing the tapping assembly worktable 4 to rotate around the support bearing 3. This adjusts the machining angle of the automobile wheel hub axle tube and transfers it to the area directly below the tapping assembly mechanism 14 on the other side. Through the alternating operation of the tapping assembly mechanisms 14 on both sides of the multi-axis tapping assembly frame 1, the combined machining of drilling and tapping of the automobile wheel hub axle tube is achieved.

[0035] Two dovetail grooves 6 are respectively opened on both sides of the multi-axis tapping assembly frame 1. Slide seats 7 are slidably connected in the two dovetail grooves 6. Support boxes 8 are fixed on the side of the two slide seats 7 that are far apart from each other. The mutual insertion between the dovetail grooves 6 and the side walls of the slide seats 7 plays a role in limiting and guiding the support boxes 8, preventing deviation, and ensuring that the support boxes 8 always move in the vertical direction, thereby improving the stability of subsequent processing.

[0036] A height adjustment component 9 is installed through the support box 8. Both ends of the height adjustment component 9 are fixed to the extension on one side of the multi-axis tapping assembly frame 1. The height adjustment component 9 includes a second motor 901. A lead screw 902 is fixed to the output shaft of the second motor 901. A nut 904 is threaded onto the lead screw 902. The nut 904 is engaged in the support box 8, and the bottom end of the lead screw 902 passes through the support box 8 via the nut 904 and is rotatably connected to a support sleeve 903. The support sleeve 903 and the second motor 901 are fixed to the extension on one side of the multi-axis tapping assembly frame 1. When the second motor 901 of the height adjustment component 9 is activated, it drives the lead screw 902 to rotate. The nut 904, threaded onto the lead screw 902, causes the support box 8 to slide up and down along the dovetail groove 6 on one side of the multi-axis tapping assembly frame 1, thereby adjusting the overall height of the tapping assembly 14 to ensure that the drill bit or tap can accurately contact the machining surface at the top of the automotive wheel hub tube.

[0037] As a further embodiment of the present invention, a drive assembly 10 is installed through the top of the support box 8. The drive assembly 10 includes a drive motor 101, which is mounted on the support box 8. The output shaft of the drive motor 101 passes through the top of the support box 8 and is fixed with a drive gear 102. The drive gear 102 is externally meshed with four driven gears 103. A connecting shaft 104 is fixedly connected to the driven gears 103. The connecting shaft 104 is rotatably connected to the support box 8 through a bushing.

[0038] Four transmission components 11 are mounted on the bottom of the connecting shaft 104. Each transmission component 11 includes a sliding sleeve 111, inside which a sliding rod 112 is fitted. A top universal joint 113 is mounted on the top of the sliding rod 112, and the top universal joint 113 is movably connected to the bottom end of the connecting shaft 104. A bottom universal joint 114 is mounted on the bottom end of the sliding sleeve 111, and the bottom universal joint 114 is movably connected to the top end of the tapping assembly 14. After the drive motor 101 starts, it drives the drive gear 102 to rotate. The drive gear 102 meshes and drives the four driven gears 103 to rotate synchronously. The driven gears 103 transmit power to the transmission components 11 through the connecting shaft 104, enabling the multiple transmission components 11 to drive the corresponding tapping assembly 14 below to work synchronously, thereby improving machining stability.

[0039] During the horizontal movement of the four tapping assembly mechanisms 14, their tops pull the sliding sleeve 111 through the bottom universal joint 114, allowing the sliding rod 112 inside the sliding sleeve 111 to extend. With the combined action of the top universal joint 113 on the sliding rod 112 and the bottom universal joint 114 connected to the sliding sleeve 111, the positions of the four tapping assembly mechanisms 14 can be adjusted synchronously without adjusting the drive assembly 10.

[0040] As a further embodiment of the present invention, a horizontal adjustment component 12 is provided below the transmission component 11, and the horizontal adjustment component 12 is fixed to the bottom of the support box 8; a support frame 13 is provided at the bottom of the horizontal adjustment component 12, and the support frame 13 is fixedly installed below the support box 8. Four tapping combination mechanisms 14 are slidably connected in the support frame 13, and the top ends of the four tapping combination mechanisms 14 pass through the horizontal adjustment component 12 and are connected to the bottom ends of the corresponding four transmission components 11.

[0041] The tapping assembly mechanism 14 includes a tool holder 141, with a tool 142 mounted on the bottom of the tool holder 141. The tool 142 includes either a drill bit or a tap. Because the tool holder 141 is equipped with a drill bit or a tap, the alternating operation of the tapping assembly mechanisms 14 on both sides of the multi-axis tapping assembly frame 1 enables drilling and tapping of automobile wheel hub tubes, ensuring the continuity of the machining operation. The top and bottom universal joints 114 of the tool holder 141 are movably connected. A rotary bearing 143 is sleeved on the outside of the tool holder 141, and a slider 144 is fixed below the outer ring of the rotary bearing 143. The support frame 13 has a cross-shaped design and grooves 15 are respectively opened at the positions of the four sliders 144. The protruding parts on both sides of the sliders 144 are slidably connected in the inner wall of the grooves 15. The grooves 15 limit the protruding parts on both sides of the sliders 144, improving the stability of the horizontal movement of the tool holder 141.

[0042] The top universal joint 113, slide rod 112, slide sleeve 111 and bottom universal joint 114 of the transmission assembly 11 form a flexible transmission structure, which not only ensures that the power is stably transmitted to the tool holder 141, but also adapts to the positional deviation of the tool holder 141 during the horizontal adjustment process.

[0043] The horizontal adjustment assembly 12 includes a limiting bearing 121. The outer ring of the limiting bearing 121 is fixed to the bottom of the support box 8. A turntable 122 is sleeved inside the limiting bearing 121. Sliding holes 125 are respectively opened on the turntable 122 at the positions corresponding to the four tool holders 141. The sliding holes 125 are designed as arc-shaped elongated strips. A rotary bearing 143 slides through the outermost end of the sliding hole 125. A fixed shaft 123 is fixed in the middle of the turntable 122. An adjustment motor 124 is fixed at the top of the fixed shaft 123. The adjustment motor 124 is installed inside the support box 8. The adjustment motor 124 drives the turntable 122 to rotate through the fixed shaft 123. The arc-shaped elongated sliding holes 125 on the turntable 122 guide the rotary bearings 143 of the tapping assembly mechanism 14, so that the tool holders 141 slide radially along the sliding grooves 15 of the support frame 13 through the sliders 144. The four tapping assembly mechanisms 14 adjust the horizontal spacing synchronously to adapt to the processing requirements of different hole layouts.

[0044] As a further embodiment of the present invention, mounting bases 16 are fixedly installed on both sides of the tapping assembly workbench 4. A clamping adjustment assembly 17 is fixed on the mounting base 16. The clamping adjustment assembly 17 includes a fixing frame 171. The fixing frame 171 is circular and has an opening on its outside that is rotatably connected to a worm gear 172 via a bushing. One end of the worm gear 172 is connected to a small motor 173. The small motor 173 is installed on the outside of the fixing frame 171. Three sliding grooves 174 are provided on the protruding part of the fixing frame 171.

[0045] The clamping adjustment assembly 17 is internally slidably connected to a limiting assembly 18. The limiting assembly 18 includes a rotating ring 181. Several helical teeth 182 are provided on the outside of the rotating ring 181 near the worm gear 172, and the worm gear 172 meshes with the helical teeth 182. The rotating ring 181 slides within a groove in one of the three protruding parts inside the fixed frame 171. A guide rod 184 is longitudinally fixed to the inner wall of the groove. Through holes 183 are respectively opened on the rotating ring 181 corresponding to the positions of the three guide rods 184. The through holes 183 are arc-shaped and elongated, and the guide rods 184 slide through them. A sliding column 185 is fixed through the outside of the guide rod 184. The sliding column 185 slides within the sliding groove 174, and the cavity inside the sliding column 185 passes through the rotating ring 181. A pressure plate 186 is fixed to one end of each of the three sliding columns 185 that is close to each other.

[0046] The worm gear 172 is driven to rotate by a small motor 173. Since the worm gear 172 meshes with the helical teeth 182 on the outside of the rotating ring 181, the rotational motion of the worm gear 172 is converted into the circumferential deflection motion of the rotating ring 181 inside the fixed frame 171. When the rotating ring 181 deflects, the arc-shaped through hole 183 on its surface slides along the guide rod 184 in the groove of the fixed frame 171. Through the guiding action of the through hole 183, the sliding column 185 is driven to move radially along the sliding groove 174 of the fixed frame 171. The three sliding columns 185 move towards the center at the same time, pushing the pressure plate 186 at the end to fit tightly against the surface of the workpiece, thereby achieving centering and clamping of hub shaft tubes of different diameter specifications.

[0047] Working principle of this invention:

[0048] In use, place the automotive wheel hub tube to be processed in the mounting seat 16 on the tapping assembly worktable 4, with the flange component of the automotive wheel hub tube facing upwards, ensuring that the processing part of the automotive wheel hub tube is aligned with the lower area of ​​the tapping assembly mechanism 14. Start the small motor 173 of the clamping adjustment assembly 17. The small motor 173 drives the worm gear 172 to rotate. Since the worm gear 172 meshes with the helical teeth 182 on the outside of the rotating ring 181, the rotational motion of the worm gear 172 is converted into the circumferential deflection motion of the rotating ring 181 inside the fixed frame 171. When the rotating ring 181 deflects, the arc-shaped through hole 183 on its surface slides along the guide rod 184 in the groove of the fixed frame 171. Through the guiding action of the through hole 183, the sliding column 185 is driven to move radially along the sliding groove 174 of the fixed frame 171. The three sliding columns 185 move towards the center simultaneously, pushing the end pressure plate 186 to tightly fit against the workpiece surface, realizing the centering and clamping of wheel hub tubes of different diameter specifications.

[0049] According to the machining height requirements of the automobile wheel hub tube, the second motor 901 of the height adjustment component 9 is activated. The second motor 901 drives the lead screw 902 to rotate. The nut 904, which is threaded to the lead screw 902, drives the support box 8 to slide up and down along the dovetail groove 6 on one side of the multi-axis tapping assembly frame 1, thereby adjusting the overall height of the tapping assembly mechanism 14 to ensure that the drill bit or tap can accurately contact the machining surface at the top of the automobile wheel hub tube.

[0050] To accommodate the different hole distribution requirements of automotive wheel hub tubes, the adjusting motor 124 of the horizontal adjusting assembly 12 is activated. The adjusting motor 124 drives the turntable 122 to rotate via the fixed shaft 123. The arc-shaped elongated sliding hole 125 on the turntable 122 guides the rotating bearing 143 of the tapping assembly 14, causing the tool holder 141 to slide radially along the sliding groove 15 of the support frame 13 via the slider 144. The four tapping assemblies 14 synchronously adjust their horizontal spacing to adapt to the processing requirements of different hole layouts. During the horizontal movement of the four tapping assemblies 14, their tops pull the sliding sleeve 111 via the bottom universal joint 114, allowing the sliding rod 112 inside the sliding sleeve 111 to extend. With the combined action of the top universal joint 113 on the sliding rod 112 and the bottom universal joint 114 connected to the sliding sleeve 111, the positions of the four tapping assemblies 14 can be adjusted synchronously without adjusting the drive assembly 10.

[0051] After the drive motor 101 of the drive assembly 10 starts, it drives the drive gear 102 to rotate. The drive gear 102 meshes and drives the four driven gears 103 to rotate synchronously. The driven gears 103 transmit power to the transmission assembly 11 through the connecting shaft 104. The top universal joint 113, slide rod 112, slide sleeve 111 and bottom universal joint 114 of the transmission assembly 11 form a flexible transmission structure, which not only ensures that the power is stably transmitted to the tool holder 141, but also adapts to the positional deviation of the tool holder 141 during the horizontal adjustment process, ensuring that the drill bit or tap continues to rotate. Next, the second motor 901 in the height adjustment assembly 9 continues to work. The second motor 901 drives the lead screw 902 to rotate. The nut 904 threadedly connected to the lead screw 902 drives the support box 8 to move down. The tapping assembly 14 in the support box 8 moves down synchronously, so that the rotating drill bit or tap contacts the workpiece surface and begins drilling or tapping. Four tapping combination mechanisms 14 operate synchronously, greatly improving processing efficiency. During the processing, the rotary bearing 143 outside the tool holder 141 ensures the stable rotation of the tool holder 141. The sliding cooperation between the slider 144 and the slide groove 15 in the support frame 13 restricts the movement trajectory of the tool holder 141, avoids processing deviations, and ensures hole position accuracy.

[0052] When adjusting the position of the car wheel hub axle tube, the first motor 503 of the deflection assembly 5 is started. The first motor 503 drives the drive gear 502 to rotate. The drive gear 502 meshes with the gear ring 501 of the inner ring of the tapping assembly worktable 4, causing the tapping assembly worktable 4 to rotate around the support bearing 3. The machining angle of the car wheel hub axle tube is adjusted, and it is transferred to the other side directly below the tapping assembly mechanism 14. Because the drill bit or tap is installed in the tool holder 141, the combined machining of drilling and tapping of the car wheel hub axle tube is achieved through the alternating operation of the tapping assembly mechanisms 14 on both sides of the multi-axis tapping assembly frame 1. After the machining of the car wheel hub axle tube is completed, the height adjustment assembly 9 drives the support box 8 to reset upward, the tapping assembly mechanism 14 disengages from the workpiece, and the small motor 173 of the clamping adjustment assembly 17 rotates in reverse, driving the pressure plate 186 to release the workpiece. The operator takes out the machined workpiece.

Claims

1. A multi-axis tapping assembly machine for automobile wheel hub tubes, comprising a multi-axis tapping assembly frame (1), characterized in that: The bottom of the multi-axis tapping assembly frame (1) is fixed with a support base (2), and a support bearing (3) is fixed on the support base (2). A tapping assembly worktable (4) is rotatably connected inside the support bearing (3). A deflection component (5) is fixed in the inner ring of the tapping assembly worktable (4). Dovetail grooves (6) are respectively opened on both sides of the multi-axis tapping assembly frame (1). A slide block (7) is slidably connected inside the dovetail groove (6). A support box (8) is fixed on the side of the two slide blocks (7) that are far apart from each other. A height adjustment component (9) is installed through the support box (8). The two ends of the height adjustment component (9) are respectively fixed to the extension on one side of the multi-axis tapping assembly frame (1). A drive component (10) is installed through the top of the support box (8). The bottom of the drive component (10) extends to the support box (1). 8) Four transmission components (11) are installed. A horizontal adjustment component (12) is provided below the transmission component (11). The horizontal adjustment component (12) is fixed to the bottom of the support box (8). A support frame (13) is provided at the bottom of the horizontal adjustment component (12). The support frame (13) is fixedly installed below the support box (8). Four tapping combination mechanisms (14) are slidably connected in the support frame (13). The top of the four tapping combination mechanisms (14) passes through the horizontal adjustment component (12) and is connected to the bottom of the corresponding four transmission components (11). Mounting seats (16) are fixedly installed on both sides of the tapping combination workbench (4). A clamping adjustment component (17) is fixed on the mounting seat (16). A limit component (18) is slidably connected inside the clamping adjustment component (17).

2. The multi-axis tapping combination machine for automobile wheel hub tubes according to claim 1, characterized in that: The deflection assembly (5) includes a gear ring (501), which is fixed in the inner ring of the tapping assembly worktable (4). A drive gear (502) is meshed inside the gear ring (501). A first motor (503) is fixed on the drive gear (502). A connecting plate (504) is fixed outside the first motor (503). The connecting plate (504) is fixed below the back of the multi-axis tapping assembly frame (1).

3. The multi-axis tapping combination machine for automobile wheel hub tubes according to claim 1, characterized in that: The height adjustment assembly (9) includes a second motor (901), the output shaft of which is fixed with a lead screw (902). The lead screw (902) is externally threaded with a nut (904), which is snapped into the support box (8). The bottom end of the lead screw (902) passes through the support box (8) through the nut (904) and is rotatably connected to a support sleeve (903). The support sleeve (903) and the second motor (901) are fixed on an extension on one side of the multi-axis tapping assembly frame (1).

4. The multi-axis tapping combination machine for automobile wheel hub tubes according to claim 1, characterized in that: The drive assembly (10) includes a drive motor (101), which is mounted on the support box (8). The output shaft of the drive motor (101) passes through the top of the support box (8) and is fixed with a drive gear (102). The drive gear (102) is externally meshed with four driven gears (103). A connecting shaft (104) is fixedly connected in the driven gears (103). The connecting shaft (104) is rotatably connected to the support box (8) through a bushing.

5. The multi-axis tapping combination machine for automobile wheel hub tubes according to claim 4, characterized in that: The transmission assembly (11) includes a sliding sleeve (111), inside which a sliding rod (112) is fitted. A top universal joint (113) is installed at the top of the sliding rod (112), and the top universal joint (113) is movably connected to the bottom end of the connecting shaft (104). A bottom universal joint (114) is installed at the bottom end of the sliding sleeve (111), and the bottom universal joint (114) is movably connected to the top end of the tapping assembly mechanism (14).

6. The multi-axis tapping combination machine for automobile wheel hub tubes according to claim 5, characterized in that: The tapping assembly (14) includes a tool holder (141), a tool (142) is installed at the bottom of the tool holder (141), and the tool (142) includes either a drill bit or a tap. The top of the tool holder (141) is movably connected to the bottom universal joint (114). A rotary bearing (143) is sleeved on the outside of the tool holder (141). A slider (144) is fixed below the outer ring of the rotary bearing (143). The support frame (13) is designed in a cross shape and has grooves (15) respectively opened at the positions of the four sliders (144). The protruding parts on both sides of the slider (144) are slidably connected in the inner wall of the groove (15).

7. The multi-axis tapping combination machine for automobile wheel hub tubes according to claim 6, characterized in that: The horizontal adjustment assembly (12) includes a limiting bearing (121), the outer ring of which is fixed to the bottom of the support box (8). A turntable (122) is fitted inside the limiting bearing (121). Sliding holes (125) are respectively opened on the turntable (122) at the positions corresponding to the four tool holders (141). The sliding holes (125) are designed as arc-shaped strips. The rotary bearing (143) slides through the outermost end of the sliding hole (125). A fixed shaft (123) is fixed in the middle of the turntable (122). An adjustment motor (124) is fixed at the top of the fixed shaft (123). The adjustment motor (124) is installed inside the support box (8).

8. The multi-axis tapping combination machine for automobile wheel hub tubes according to claim 1, characterized in that: The clamping adjustment assembly (17) includes a fixed frame (171). A worm gear (172) is rotatably connected to the opening outside the fixed frame (171) via a bushing. One end of the worm gear (172) is connected to a small motor (173). The small motor (173) is installed outside the fixed frame (171). Three sliding grooves (174) are provided in the fixed frame (171).

9. A multi-axis tapping combination machine for automobile wheel hub tubes according to claim 8, characterized in that: The limiting component (18) includes a rotating ring (181). Several helical teeth (182) are provided on the outer side of the rotating ring (181) near the worm gear (172). The worm gear (172) meshes with the helical teeth (182). The rotating ring (181) slides within a groove in one of the three protruding parts inside the fixed frame (171), and guide rods (184) are fixed to the inner wall of the groove. The rotating ring (181) has corresponding guide rods (184). Through holes (183) are provided at the positions respectively. The through holes (183) are arc-shaped and elongated. The guide rod (184) slides through the through holes (183). A sliding column (185) is fixed through the outside of the guide rod (184). The sliding column (185) slides in the sliding groove (174). The cavity inside the sliding column (185) passes through the rotating ring (181). A pressure plate (186) is fixed at one end of the three sliding columns (185) that are close to each other.

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