Automobile assembly part reaming equipment

Abstract

The invention discloses automobile assembly part reaming equipment, and belongs to the technical field of reaming equipment.The automobile assembly part reaming equipment comprises a base, a supporting assembly and an auxiliary assembly are arranged on the base, a position adjusting unit and a limiting unit are further arranged on an annular supporting frame, and by arranging the supporting assembly, the positions of four electromagnets can be adjusted according to the shape of an automobile assembly part to be machined; by arranging the clamping unit, supporting and fixing of the assembly part are achieved, the clamp does not need to be replaced repeatedly, the machining cost is reduced, by arranging the limiting unit, locking of the positions of the square sliding plate ring and the square long rod can be achieved, the position of the automobile assembly part is prevented from deviating in the machining process, and the stability of equipment is improved; through mutual cooperation of the supporting assembly and the auxiliary assembly, reaming work of the automobile assembly part can be rapidly completed, manual intervention and waiting time are reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of hole expanding equipment, in particular to a hole expanding equipment for automobile assembly parts. Background Art

[0002] In the traditional hole expansion processing of automobile assembly parts, the selection and replacement of fixtures is a time-consuming and tedious process. Assemblies of different shapes and sizes require different fixtures for fixation, which not only increases the processing cost, but also reduces production efficiency. Moreover, each replacement of the fixture requires a lot of time and effort. Although the existing hole expansion equipment can automatically adjust the support position, the adjustment range is limited, and the accuracy and flexibility of the automatic adjustment are still insufficient, and it cannot adapt to assemblies of different shapes and sizes. Therefore, the present invention provides a hole expansion equipment for automobile assembly parts. Summary of the invention

[0003] In view of the defects in the prior art, the present invention provides an automobile assembly hole expanding device, which overcomes the problems of limited adjustment range, insufficient precision and flexibility of automatic adjustment, and inability to adapt to assemblies of different shapes and sizes.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a kind of automobile assembly hole reaming equipment, comprising a base, on which a supporting assembly and an auxiliary assembly are arranged, the supporting assembly comprising an annular support frame, four square slides are slidably mounted in a circular array on the annular support frame, shift slides are slidably mounted on the square slides, square long rods are slidably mounted on the shift slides, electromagnets are fixedly mounted on the ends of the square long rods farthest from the shift slides, four shift circular plates are rotatably mounted in a circular array on the annular support frame, shift racks are slidably mounted on the shift circular plates, the ends of the shift racks closest to the axis of the annular support frame are slidably matched with the corresponding square long rods, a positioning unit and a limiting unit are also arranged on the annular support frame, the positioning unit is used to adjust the positions of the square slides and the square long rods, the limiting unit is used to limit the positions of the square slides and the square long rods, the auxiliary assembly comprises an reaming drill bit, and the reaming drill bit is used to reame holes in assembly parts.

[0005] Furthermore, the annular support frame is fixedly mounted on the base, and four adjusting screws are rotatably mounted on the annular support frame in a circular array. The adjusting screws and the corresponding square slides form a spiral pair, and the end of the adjusting screw closest to the base is rotatably connected to the base.

[0006] Furthermore, the shift slide on the same square slide is perpendicular to the direction of movement of the square slide and the direction of movement of the square long rod relative to the shift slide. A shift gear is rotatably installed on the shift circular plate. When the shift gear is engaged with the corresponding shift rack, a gear rack pair is formed. There is friction between the shift circular plate and the annular support frame, and there is friction between the shift rack and the corresponding shift circular plate.

[0007] Furthermore, the positioning unit includes a transposition ring plate rotatably mounted on the annular support frame, on which positioning gear 1, positioning gear 2 and positioning gear 3 are rotatably mounted, a driven gear is fixedly mounted on the shift gear, and when the driven gear and the positioning gear 2 are engaged, a gear pair is formed, a linkage gear is fixedly mounted on the shift circular plate, and when the linkage gear and the positioning gear 1 are engaged, a gear pair is formed, a transmission gear is fixedly mounted on the positioning screw rod, and when the positioning gear 3 and the transmission gear are engaged, a gear pair is formed, and the axes of the shift circular plate, shift gear, driven gear and linkage gear corresponding to the same square long rod are on the same straight line.

[0008] Furthermore, the limiting unit includes a limiting ring plate slidably mounted on the annular support frame, a limiting rack is rotatably mounted on the annular support frame, the limiting rack and the limiting ring plate constitute a spiral pair, and four sector-shaped friction strips are fixedly arranged in a circular array on the limiting ring plate, the axis of the sector-shaped friction strips and the corresponding displacement circular plate are in the same straight line, and friction exists between the sector-shaped friction strips and the corresponding displacement rack when the two are in contact.

[0009] Furthermore, four annular friction plates are fixedly arranged in a circular array on the limiting ring plate, the axis of the positioning motor 1 and the corresponding transmission gear are on the same straight line, the annular friction plate is not in contact with the corresponding positioning screw rod, and there is friction between the annular friction plate and the corresponding transmission gear when they are in contact.

[0010] Furthermore, the auxiliary component also includes a T-shaped slide, which is slidably mounted on the base, and a transverse screw is rotatably mounted on the T-shaped slide. The base and the transverse screw constitute a spiral pair. An auxiliary slide is also slidably mounted on the T-shaped slide, and a longitudinal screw is rotatably mounted on the T-shaped slide. The longitudinal screw and the auxiliary slide constitute a spiral pair.

[0011] Furthermore, a transverse rotating plate is rotatably installed on the auxiliary slide, a vertical sliding plate is slidably installed on the transverse rotating plate, a vertical screw rod is rotatably installed on the transverse rotating plate, the end of the vertical sliding plate farthest from the lower surface of the base forms a spiral pair with the vertical screw rod, the end of the vertical sliding plate closest to the lower surface of the base is fixedly installed with a driving motor, and the reaming drill bit is fixedly installed on the output shaft of the driving motor.

[0012] Compared with the prior art, the present invention has the following advantages: (1) By setting a support assembly, the present invention can adjust the positions of four electromagnets according to the shape of the automobile assembly to be processed, thereby achieving support and fixation of the assembly, thereby eliminating the need to repeatedly replace the fixture and reducing processing costs. (2) By setting a limit unit, the present invention can lock the position of the square slide ring and the square long rod, thereby preventing the position of the automobile assembly from shifting during processing, that is, improving the stability of the equipment. (3) By the mutual cooperation of the support assembly and the auxiliary assembly, the present invention can quickly complete the hole expansion work of the automobile assembly, reduce manual intervention and waiting time, and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0014] Figure 2 It is a side view of the overall structure of the present invention.

[0015] Figure 3 It is a schematic structural diagram of the support assembly of the present invention.

[0016] Figure 4 for Figure 3 A local enlarged schematic diagram of point A in the middle.

[0017] Figure 5 for Figure 3 A local enlarged schematic diagram of point B in the middle.

[0018] Figure 6 It is a structural schematic diagram of the square slide plate of the present invention.

[0019] Figure 7 for Figure 6 A partial enlarged schematic diagram of point C in the middle.

[0020] Figure 8 It is a schematic diagram of the structure of the transposition ring plate of the present invention.

[0021] Fig. 9 for Figure 8 A partial enlarged schematic diagram of point D in the middle.

[0022] Fig.10 It is a top view of the structure of the shift rack of the present invention.

[0023] Fig.11 for Fig.10 A partial enlarged schematic diagram of point E in the middle.

[0024] Fig.12 It is a schematic structural diagram of the limiting ring plate of the present invention.

[0025] Fig.13 for Fig.12A partial enlarged schematic diagram of point F in the middle.

[0026] Fig.14 It is a schematic diagram of the structure of the auxiliary components of the present invention.

[0027] Figure numerals: 101-base; 102-annular support frame; 103-T-shaped slide plate; 104-reaming drill bit; 105-transverse screw rod; 106-transverse motor; 107-auxiliary slide seat; 108-transverse rotating plate; 109-auxiliary motor; 110-driving motor; 111-longitudinal screw rod; 112-longitudinal motor; 113-vertical screw rod; 114-vertical motor; 115-vertical slide plate; 116-transposition ring plate; 117-transposition gear ring; 118-square slide plate; 119-square long rod; 120-electromagnet; 121-limiting ring Plate; 122-limiting motor; 123-limiting rack; 124-shifting motor; 125-shifting gear; 126-shifting slide plate; 127-shifting rack; 128-sector friction strip plate; 129-shifting circular plate; 130-shifting gear; 131-driven gear; 132-linkage gear; 133-adjusting gear one; 134-adjusting gear two; 135-adjusting screw rod; 136-transmission gear; 137-annular friction plate; 138-adjusting motor one; 139-adjusting motor two; 140-adjusting motor three; 141-adjusting gear three. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0029] Example: Reference Figure 1-Figure 14 A hole expanding device for automobile assembly parts includes a base 101, on which a supporting assembly is arranged, and the supporting assembly includes an annular support frame 102, which is fixedly mounted on the base 101, and four square slides 118 are slidably mounted in a circular array on the annular support frame 102, and four adjusting screws 135 are rotatably mounted in a circular array on the annular support frame 102, and the adjusting screws 135 and the corresponding square slides 118 form a spiral pair, and the end of the adjusting screw 135 closest to the base 101 is rotatably connected to the base 101, and there is friction between the adjusting screw 135 and the annular support frame 102, and the adjusting screw 135 cannot rotate when not subjected to external force.

[0030] In the initial position, the four square slides 118 are all located at the farthest position from the lower surface of the base 101. At this time, the upper surfaces of the four square slides 118 are on the same plane, and the adjustment screw rods 135 are driven to rotate respectively, so that the square slides 118 move up and down relative to the annular support frame 102, thereby realizing the adjustment of the position of the square slides 118.

[0031] A shift slide 126 is slidably mounted on the square slide 118, and a square long rod 119 is slidably mounted on the shift slide 126. The shift slide 126 on the same square slide 118 is perpendicular to the direction of movement of the square slide 118 and the direction of movement of the square long rod 119 relative to the shift slide 126. An electromagnet 120 is fixedly mounted on the end of the square long rod 119 farthest from the shift slide 126. Four shift circular plates 129 are rotatably mounted in a circular array on the annular support frame 102. A shift rack 127 is slidably mounted on the shift circular plates 129. The end of the shift rack 127 closest to the axis of the annular support frame 102 is slidably matched with the corresponding square long rod 119. A shift gear 130 is rotatably mounted on the shift circular plate 129. When the shift gear 130 is engaged with the corresponding shift rack 127, a gear rack pair is formed.

[0032] There is friction between the shift circular plate 129 and the annular support frame 102, and the shift circular plate 129 cannot rotate relative to the annular support frame 102 without external force. There is friction between the shift rack 127 and the corresponding shift circular plate 129, and the shift rack 127 cannot slide relative to the shift circular plate 129 without external force.

[0033] In the initial position, the shift slide 126 is located on the corresponding square slide 118 at the position closest to the axis of the annular support frame 102, and the square long rod 119 is located on the corresponding shift slide 126 at the position closest to the axis of the annular support frame 102. When the square slide 118 moves up and down relative to the annular support frame 102, under the action of the shift slide 126, the square long rod 119 slides relative to the corresponding shift rack 127.

[0034] The shift gear 130 is driven to rotate. Under the action of the friction force between the shift circular plate 129 and the annular support frame 102, the shift gear 130 rotates relative to the shift circular plate 129, so that the shift rack 127 overcomes the friction force between the shift rack 127 and the shift circular plate 129 and slides, thereby causing the shift slide 126 to slide relative to the square slide 118, and the square long rod 119 to slide relative to the shift slide 126, thereby realizing the adjustment of the distance between the square long rod 119 and the axis of the corresponding shift circular plate 129.

[0035] The shift circular plate 129 is driven to rotate relative to the annular support frame 102. Under the action of the friction force between the shift rack 127 and the shift circular plate 129, the shift rack 127 rotates synchronously, thereby causing the square long rod 119 to rotate synchronously. The shift slide 126 also slides relative to the square slide 118, and the square long rod 119 also slides relative to the shift slide 126, so that the position of the square long rod 119 relative to the axis of the shift circular plate 129 is adjusted, that is, under the action of the shift rack 127, the shift circular plate 129 and the shift gear 130, the position of the square long rod 119 on the square slide 118 is adjusted, so that the square long rod 119 can be moved to the specified position on the square slide 118.

[0036] A positioning unit is provided on the annular support frame 102, and the positioning unit is used to adjust the positions of the square slide 118 and the square long rod 119. The positioning unit includes a transposition ring plate 116 rotatably mounted on the annular support frame 102, and a transposition gear ring 117 is fixedly mounted on the transposition ring plate 116. The axes of the annular support frame 102, the transposition ring plate 116, and the transposition gear ring 117 are in the same straight line. A transposition motor 124 is also fixedly mounted on the annular support frame 102, and a transposition gear 125 is fixedly mounted on the output shaft of the transposition motor 124. The transposition gear 125 and the transposition gear ring 117 are meshed to form a gear pair.

[0037] The shift ring plate 116 is rotatably mounted with a shift gear 133, a shift gear 2 134, and a shift gear 3 141. The shift ring plate 116 is fixedly mounted with a shift motor 138, a shift motor 2 139, and a shift motor 3 140. The output shaft of the shift motor 138 is fixedly connected to the shift gear 133, the output shaft of the shift motor 2 139 is fixedly connected to the shift gear 3 141, the output shaft of the shift motor 3 140 is fixedly connected to the shift gear 2 134, and a driven gear is fixedly mounted on the shift gear 130. 131, the driven gear 131 and the adjusting gear 2 134 form a gear pair when they are engaged, the shift circular plate 129 is fixedly mounted with a linkage gear 132, and the linkage gear 132 and the adjusting gear 1 133 form a gear pair when they are engaged, the adjusting screw rod 135 is fixedly mounted with a transmission gear 136, and the adjusting gear 3 141 and the transmission gear 136 form a gear pair when they are engaged, and the axes of the shift circular plate 129, the shift gear 130, the driven gear 131, and the linkage gear 132 corresponding to the same square long rod 119 are on the same straight line.

[0038] Start the transposition motor 124 to drive the transposition gear 125 to rotate. Under the action of the transposition gear ring 117, the transposition ring plate 116 rotates relative to the annular support frame 102, and the adjustment gear 1 133, the adjustment gear 2 134, and the adjustment gear 3 141 on the transposition ring plate 116 rotate synchronously. When the adjustment gear 1 133, the adjustment gear 2 134, and the adjustment gear 3 141 are not subjected to the force of the corresponding motors, when the adjustment gear 1 133 contacts the corresponding linkage gear 132, the adjustment gear 1 133 rotates on its own, when the adjustment gear 2 134 contacts the corresponding driven gear 131, the adjustment gear 2 134 rotates on its own, and when the adjustment gear 3 141 contacts the corresponding transmission gear 136, the adjustment gear 3 141 rotates on its own.

[0039] When the positioning gear 133 is engaged with the linkage gear 132 corresponding to the rectangular long rod 119 to be adjusted, the positioning gear 2 134 is also engaged with the driven gear 131 corresponding to the rectangular long rod 119. At this time, the positioning gear 3 141 is not engaged with the corresponding annular friction plate 137. The positioning motor 138 is started to drive the positioning gear 133 to rotate, so that the linkage gear 132 rotates, and then the shift circular plate 129 rotates. The positioning motor 3 140 is started to drive the positioning gear 2 134 to rotate, so that the driven gear 131 rotates, and then the shift gear 130 rotates, so that the shift rack 127 slides. That is, under the action of the positioning motor 138 and the positioning motor 3 140, the position of the rectangular long rod 119 on the square slide 118 is adjusted.

[0040] When the positioning gear three 141 and the transmission gear 136 are engaged, the positioning motor two 139 is started to drive the positioning gear three 141 to rotate, that is, the transmission gear 136 is rotated, and then the corresponding positioning screw rod 135 is rotated, so that the square slide 118 moves relative to the annular support frame 102. When adjusting the position of the square long rod 119, the positioning gear three 141 is first engaged with the transmission gear 136, and then the position of the square slide 118 relative to the annular support frame 102 is adjusted, and then the positioning gear one 133 and the positioning gear two 134 are engaged with the driven gear 131 and the linkage gear 132 of the square slide 118, that is, the position of the square long rod 119 relative to the square slide 118 is adjusted again, so as to prevent the shift rack 127 from affecting the position of the positioning gear three 141.

[0041] A limiting unit is also provided on the annular support frame 102, and the limiting unit is used to limit the position of the square slide 118 and the square long rod 119. The limiting unit includes a limiting ring plate 121 slidably mounted on the annular support frame 102, and a limiting rack 123 is rotatably mounted on the annular support frame 102. The limiting rack 123 and the limiting ring plate 121 constitute a spiral pair. A limiting motor 122 is also fixedly installed on the annular support frame 102, and the output shaft of the limiting motor 122 is fixedly connected to the limiting rack 123. There are 4 fans fixedly arranged on the circumferential array of the limiting ring plate 121. The fan-shaped friction strip 128, the axis of the fan-shaped friction strip 128 and the corresponding shift circular plate 129 are in the same straight line, and there is friction between the fan-shaped friction strip 128 and the corresponding shift rack 127 when they are in contact. Four annular friction plates 137 are fixedly arranged in a circular array on the limiting ring plate 121, the axis of the positioning motor 138 and the corresponding transmission gear 136 are in the same straight line, the annular friction plate 137 is not in contact with the corresponding positioning screw rod 135, and there is friction between the annular friction plate 137 and the corresponding transmission gear 136 when they are in contact.

[0042] The limit motor 122 is started to drive the limit rack 123 to rotate, that is, the limit ring plate 121 moves up and down relative to the annular support frame 102, and the fan-shaped friction strip plate 128 and the annular friction plate 137 on the limit ring plate 121 move synchronously. When the limit ring plate 121 makes the lower surface of the fan-shaped friction strip plate 128 contact the upper surface of the shift rack 127, under the action of the friction force between the shift rack 127 and the fan-shaped friction strip plate 128, the shift rack 127 cannot move relative to the annular support frame 102, that is, the position of the rectangular long rod 119 is locked, and at this time, the lower surface of the annular friction plate 137 It contacts the upper surface of the corresponding transmission gear 136. Under the action of the friction force between the transmission gear 136 and the annular friction plate 137, the transmission gear 136 cannot rotate relative to the annular support frame 102, that is, the position of the square slide 118 is locked. When it is necessary to adjust the position of the square slide 118 and the square long rod 119, the limit motor 122 is started to make the limit ring plate 121 move downward, so that the fan-shaped friction strip plate 128 is out of contact with the shift rack 127 and the annular friction plate 137 is out of contact with the transmission gear 136, that is, the restriction on the position of the square slide 118 and the square long rod 119 is released.

[0043] An auxiliary component is also provided on the base 101, and the auxiliary component includes a reaming drill bit 104, which is used for reaming the assembly parts. The auxiliary component also includes a T-shaped slide 103, which is slidably mounted on the base 101, and a transverse screw rod 105 is rotatably mounted on the T-shaped slide 103, and the base 101 and the transverse screw rod 105 constitute a spiral pair, and a transverse motor 106 is fixedly mounted on the T-shaped slide 103, and the output shaft of the transverse motor 106 is fixedly connected to the transverse screw rod 105, and an auxiliary slide 107 is also slidably mounted on the T-shaped slide 103, and a longitudinal screw rod 111 is rotatably mounted on the T-shaped slide 103, and the longitudinal screw rod 111 and the auxiliary slide 107 constitute a spiral pair, and a longitudinal motor 112 is also fixedly mounted on the T-shaped slide 103, and the output shaft of the longitudinal motor 112 is fixedly connected to the longitudinal screw rod 111.

[0044] A transverse rotating plate 108 is also rotatably installed on the auxiliary slide 107, an auxiliary motor 109 is fixedly installed on the auxiliary slide 107, the output shaft of the auxiliary motor 109 is fixedly connected to the transverse rotating plate 108, a vertical slide 115 is slidably installed on the transverse rotating plate 108, a vertical screw rod 113 is rotatably installed on the transverse rotating plate 108, the end of the vertical slide 115 farthest from the lower surface of the base 101 forms a spiral pair with the vertical screw rod 113, a vertical motor 114 is fixedly installed on the transverse rotating plate 108, the output shaft of the vertical motor 114 is fixedly connected to the vertical screw rod 113, a driving motor 110 is fixedly installed on the end of the vertical slide 115 closest to the lower surface of the base 101, and the reaming drill bit 104 is fixedly installed on the output shaft of the driving motor 110, when the transverse rotating plate 108 is in a vertically upward position, the axis of the vertical screw rod 113, the axis of the transverse screw rod 105, and the axis of the longitudinal screw rod 111 are perpendicular to each other.

[0045] Start the transverse motor 106 to drive the transverse screw rod 105 to rotate, so that the T-shaped slide 103 moves along the axis of the transverse screw rod 105 relative to the base 101; start the longitudinal motor 112 to drive the longitudinal screw rod 111 to rotate, so that the auxiliary slide 107 moves along the axis of the longitudinal screw rod 111 relative to the T-shaped slide 103; start the vertical motor 114 to drive the vertical screw rod 113 to rotate, so that the vertical slide 115 moves along the axis of the vertical screw rod 113 relative to the transverse rotating plate 108; start the auxiliary motor 109 to drive the transverse rotating plate 108 to rotate, so as to adjust the angle of the reaming drill bit 104; start the drive motor 110 to drive the reaming drill bit 104, so that the reaming drill bit 104 can operate.

[0046] Working principle: first start the limit motor 122 to adjust the position of the limit ring plate 121, so that the fan-shaped friction strip plate 128 is out of contact with the shift rack 127, and the annular friction plate 137 is out of contact with the transmission gear 136, that is, the restriction on the position of the square slide 118 and the square long rod 119 is released, and then according to the appearance of the automobile assembly to be processed, start the transposition motor 124 to adjust the position of the transposition ring plate 116, first make the adjustment gear three 141 engage with the four transmission gears 136 in sequence, when the adjustment gear three 141 is engaged with the transmission gear 136, start the adjustment motor two 139 to drive the adjustment gear three 141 to rotate, that is, make the adjustment screw rod 135 rotate, and then make the four adjustment screw rods 135 rotate respectively, that is, make the four square slides 118 move relative to the annular support frame 102 respectively, and the square long rod 119 slides synchronously relative to the shift rack 127.

[0047] After completing the adjustment of the positions of the four square slides 118, continue to drive the transposition ring plate 116 to rotate, so that the adjustment gear 1 133 is engaged with the four linkage gears 132 in sequence. When the adjustment gear 1 133 is engaged with the linkage gear 132, the adjustment gear 2 134 is engaged with the driven gear 131 corresponding to the linkage gear 132. Then, under the action of the adjustment motor 138 and the adjustment motor 3 140, the position of the rectangular long rod 119 relative to the square slide 118 is adjusted. After completing the position adjustment of the four square long rods 119 in sequence, start the limit motor 122, so that the fan-shaped friction strip plate 128 is re-engaged with the shift rack 127. At this time, the annular friction plate 137 is re-engaged with the transmission gear 136, that is, the locking of the positions of the square slide 118 and the square long rod 119 is achieved, that is, the adjustment of the support position of the assembly is completed, and at this time, the four electromagnets 120 form a supporting fixture.

[0048] The assembly is then placed on the support position formed by the four electromagnets 120, and then the four electromagnets 120 are started. Under the action of the four electromagnets 120, the assembly is fixed, and then the transverse motor 106, the auxiliary motor 109, and the longitudinal motor 112 are started to adjust the position of the reaming drill bit 104, so that the axis of the reaming drill bit 104 and the axis of the position to be reamed of the assembly are in the same straight line, and then the vertical motor 114 is started to make the vertical slide 115 move downward along the axis of the vertical screw rod 113, so that the reaming drill bit 104 reams the position to be reamed of the assembly.

[0049] After completing the hole expansion of the assembly, turn off the electromagnet 120 and remove the assembly. When the position of the square slide 118 and the square long rod 119 needs to be adjusted, perform the above steps in reverse. First, return the square long rod 119 to the initial position, then return the square slide 118 to the initial position, and then repeat the above steps to adjust the position of the square slide 118 and the square long rod 119.

[0050] The present invention is not limited to the above-mentioned specific implementation modes. Various changes made by technicians in the relevant technical field based on the above-mentioned conception without creative work all fall within the protection scope of the present invention.

Claims

1. An automobile assembly hole expanding device, comprising a base (101), characterized in that: The base (101) is provided with a support assembly and an auxiliary assembly, the support assembly comprising an annular support frame (102), four square slides (118) are slidably mounted in a circular array on the annular support frame (102), a shift slide (126) is slidably mounted on each of the square slides (118), a square long rod (119) is slidably mounted on each of the shift slides (126), an electromagnet (120) is fixedly mounted on the end of the square long rod (119) farthest from the shift slide (126), four shift circular plates (129) are rotatably mounted in a circular array on the annular support frame (102), A shifting rack (127) is slidably mounted on each of the shifting circular plates (129); the end of the shifting rack (127) closest to the axis of the annular support frame (102) is slidably matched with the corresponding rectangular long rod (119); a positioning unit and a limiting unit are also provided on the annular support frame (102); the positioning unit is used to adjust the position of the square slide plate (118) and the square long rod (119); the limiting unit is used to limit the position of the square slide plate (118) and the square long rod (119); the auxiliary component comprises a hole reaming drill bit (104); and the hole reaming drill bit (104) is used to reame holes in the assembly parts.

2. The hole expanding device for automobile assembly parts according to claim 1, characterized in that: The annular support frame (102) is fixedly mounted on the base (101), and four adjusting screw rods (135) are rotatably mounted on the annular support frame (102) in a circular array. The adjusting screw rods (135) and corresponding square slide plates (118) form a spiral pair, and the end of the adjusting screw rod (135) closest to the base (101) is rotatably connected to the base (101).

3. The hole expanding device for automobile assembly parts according to claim 2, characterized in that: The shifting slide plate (126) on the same square slide plate (118) is perpendicular to the direction in which the square slide plate (118) moves and the direction in which the square long rod (119) moves relative to the shifting slide plate (126). A shifting gear (130) is rotatably mounted on the shifting circular plate (129). When the shifting gear (130) is meshed with a corresponding shifting rack (127), a gear rack pair is formed. There is friction between the shifting circular plate (129) and the annular support frame (102), and there is friction between the shifting rack (127) and the corresponding shifting circular plate (129).

4. The hole expanding device for automobile assembly parts according to claim 3, characterized in that: The positioning unit comprises a transposition ring plate (116) rotatably mounted on the annular support frame (102); a first positioning gear (133), a second positioning gear (134), and a third positioning gear (141) are rotatably mounted on the transposition ring plate (116); a driven gear (131) is fixedly mounted on the shift gear (130); when the driven gear (131) and the second positioning gear (134) are engaged, a gear pair is formed; and a coupling gear (141) is fixedly mounted on the shift circular plate (129). The driven gear (132), the linkage gear (132) and the adjustment gear 1 (133) form a gear pair when they are engaged, the adjustment screw rod (135) is fixedly mounted with a transmission gear (136), the adjustment gear 3 (141) and the transmission gear (136) form a gear pair when they are engaged, and the axes of the shifting circular plate (129), the shifting gear (130), the driven gear (131) and the linkage gear (132) corresponding to the same square long rod (119) are on the same straight line.

5. The hole expanding device for automobile assembly parts according to claim 4, characterized in that: The limiting unit comprises a limiting ring plate (121) slidably mounted on the annular support frame (102); a limiting rack (123) is rotatably mounted on the annular support frame (102); the limiting rack (123) and the limiting ring plate (121) form a spiral pair; four sector-shaped friction strips (128) are fixedly arranged in a circular array on the limiting ring plate (121); the axes of the sector-shaped friction strips (128) and the corresponding displacement circular plates (129) are on the same straight line; and friction exists between the sector-shaped friction strips (128) and the corresponding displacement racks (127) when the two are in contact.

6. The hole expanding device for automobile assembly parts according to claim 5, characterized in that: Four annular friction plates (137) are fixedly arranged in a circumferential array on the limiting ring plate (121); the axes of the positioning motor 1 (138) and the corresponding transmission gear (136) are on the same straight line; the annular friction plate (137) and the corresponding positioning screw rod (135) are not in contact; when the annular friction plate (137) and the corresponding transmission gear (136) are in contact, friction exists between the two.

7. The hole expanding device for automobile assembly parts according to claim 6, characterized in that: The auxiliary component further comprises a T-shaped slide plate (103), the T-shaped slide plate (103) being slidably mounted on the base (101), a transverse screw rod (105) being rotatably mounted on the T-shaped slide plate (103), the base (101) and the transverse screw rod (105) forming a spiral pair, an auxiliary slide seat (107) being slidably mounted on the T-shaped slide plate (103), a longitudinal screw rod (111) being rotatably mounted on the T-shaped slide plate (103), the longitudinal screw rod (111) and the auxiliary slide seat (107) forming a spiral pair.

8. The hole expanding device for automobile assembly parts according to claim 7, characterized in that: A transverse rotating plate (108) is also rotatably mounted on the auxiliary slide (107), a vertical slide plate (115) is slidably mounted on the transverse rotating plate (108), a vertical screw rod (113) is rotatably mounted on the transverse rotating plate (108), an end of the vertical slide plate (115) farthest from the lower surface of the base (101) and the vertical screw rod (113) form a spiral pair, and a drive motor (110) is fixedly mounted on the end of the vertical slide plate (115) closest to the lower surface of the base (101), and the reaming drill bit (104) is fixedly mounted on the output shaft of the drive motor (110).

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