Mandrel press-in device for automobile steering knuckle

Abstract

The invention relates to the technical field of automobile part machining, in particular to a mandrel press-in device for an automobile steering knuckle, which mainly comprises a mounting plate, a plurality of supporting rods are fixedly mounted on the top surface of the mounting plate, a fixing plate is fixedly mounted at the upper ends of the supporting rods, a fixing assembly is arranged on the mounting plate, and a fixing joint is arranged on the fixing assembly. A shaft core is arranged above the fixing joint, the fixing mechanism is arranged above the mounting plate, the fixing mechanism comprises a supporting plate and a limiting mechanism, the supporting plate is located above the mounting plate, and the limiting mechanism is arranged below the supporting plate. When the left side and the right side of a shaft core are limited through a fixing mechanism, a mounting block pushes a wedge-shaped strip to move downwards, the wedge-shaped strip pushes a wedge-shaped block to move and drives a moving plate and a moving frame to move, and the moving plate and the moving frame drive two arc-shaped limiting plates to get close to each other and drive a plurality of balls to limit and guide the front side and the rear side of the shaft core. In the press-in process of the shaft core, the shaft core is not easy to deviate, so that the stability and the press-in quality of the shaft core are improved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts processing, in particular to a mandrel pressing device for an automobile steering knuckle. Background Art

[0002] The steering knuckle is a key component in the vehicle steering system. Its main function is to transmit and bear the load on the front of the vehicle, and to support and drive the front wheel to rotate around the kingpin, so as to steer the vehicle. The steering knuckle is also called "ram's horn" because of its shape like a ram's horn. It is one of the important parts in the vehicle steering axle, which helps the vehicle to drive stably and transmit the driving direction sensitively. The steering knuckle has high strength and can withstand various forces and torques during the driving process of the vehicle.

[0003] In the current automobile manufacturing and assembly process, the shaft core of the existing automobile steering knuckle is installed and pressed. When the shaft core needs to be installed to the corresponding position, most of them use the method of setting limiting structures on the left and right sides to limit and guide the shaft core. Although it can guide the shaft core to accurately enter the predetermined position to a certain extent, since the two sides of the shaft core are limited by only this simple limiting structure, the stability of the shaft core will appear poor during the whole process of pressing the shaft core into the fixed joint, thereby affecting the quality of pressing. Summary of the invention

[0004] The object of the present invention is to provide a mandrel pressing device for a steering knuckle of an automobile to solve the problems raised by the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A mandrel pressing device for a steering knuckle of an automobile comprises: a mounting plate, a plurality of support rods are fixedly mounted on the top surface of the mounting plate, a fixing plate is fixedly mounted on the upper ends of the plurality of support rods, a fixing assembly is arranged on the mounting plate, a fixing section is arranged on the fixing assembly, an axle core is arranged above the fixing section, and further comprises:

[0007] A fixing mechanism is arranged above the mounting plate, and the fixing mechanism includes a support plate located above the mounting plate, a mounting block is arranged above the support plate, a fixing block is arranged on one side of the mounting block, a guide wheel is rotatably installed at the lower end of the fixing block, and the fixing mechanism is used to press the shaft core for guiding;

[0008] The limiting mechanism is arranged below the supporting plate. The limiting mechanism comprises an arc-shaped limiting plate below the supporting plate. Ball bearings are movably mounted on the inner wall of the arc-shaped limiting plate. The limiting mechanism is used for guiding and limiting the shaft core.

[0009] Preferably, a plurality of through holes are formed through the top surface of the support plate, the inner walls of the plurality of through holes are respectively slidably connected to the outer walls of the plurality of support rods, a cylinder is fixedly installed on the top surface of the fixed plate, the lower end of the cylinder slides through the top surface of the fixed plate and extends to the bottom of the fixed plate, and a pressure plate is fixedly installed on the lower end of the cylinder.

[0010] Preferably, a pressure head is fixedly installed on the middle bottom surface of the pressure plate, and the lower end of the pressure head abuts against the upper end of the shaft core. Two fixing rods are fixedly installed on the bottom surface of the pressure plate, and the lower ends of the two fixing rods are fixedly connected to the top surface of the support plate.

[0011] Preferably, a power assembly is fixedly installed on the side of the support plate, a bidirectional screw is fixedly installed on one end of the power assembly, two threaded sleeves are threadedly installed on the outer wall of the bidirectional screw, two mounting blocks are provided, and the sides of the two threaded sleeves are respectively fixedly connected to the sides of the two mounting blocks.

[0012] Preferably, two fixed blocks and two guide wheels are provided, the outer walls of the two guide wheels are rollingly connected to the outer wall of the shaft core, the top surfaces of the two mounting blocks are respectively provided with grooves, the upper side surfaces of the two fixed blocks are respectively provided with fixing grooves, and the inner walls of the two fixing grooves are movably connected to the outer wall of the shaft core.

[0013] Preferably, connecting shafts are respectively installed on the sides of the two fixed blocks, and the two connecting shafts are movably connected to the inner walls of the two fixed grooves respectively. Connecting blocks are respectively fixedly installed on the upper and lower sides of the two mounting blocks, and the sides of the connecting blocks close to each other are movably connected to the sides of the fixed blocks and the outer walls of the connecting shafts.

[0014] Preferably, the bottom surfaces of the two mounting blocks are respectively fixedly mounted with limit shells, the top surface of the support plate is fixedly mounted with a slide bar, and the inner walls of the two limit shells are slidably connected to the outer walls of the slide bar.

[0015] Preferably, two fixed boxes are fixedly installed on the bottom surface of the support plate, wedge blocks are slidably installed on the inner walls of the two fixed boxes, wedge strips are fixedly installed on the top surfaces of the two wedge blocks, the upper ends of the two wedge strips slide through the upper inner walls of the two fixed boxes and the bottom surface of the support plate and extend to above the support plate, and the side surfaces of the two wedge strips are slidably connected to the bottom surfaces of the two mounting blocks.

[0016] Preferably, a movable plate and a movable frame are slidably mounted on the inner walls of the two fixed boxes respectively, the top surface of the movable plate and the top surface of one end of the movable frame are slidably connected to the side surfaces of the two wedge blocks respectively, the side surfaces of the movable plate and the side surfaces of the movable frame are fixedly mounted with elastic parts respectively, and the other ends of the multiple elastic parts are fixedly connected to the inner walls of one side of the two fixed boxes respectively.

[0017] Preferably, the two fixed box sides are respectively provided with through grooves, the inner walls of the two through grooves are respectively slidably connected to the side of the movable plate and the side of the movable frame, two limit rods are respectively slidably installed on the side of the movable plate and the side of the movable frame, the two ends of the multiple limit rods are respectively fixedly connected to the inner walls on both sides of the two through grooves, two arc-shaped limit plates are provided, and the outer walls of the two arc-shaped limit plates are respectively fixedly connected to the side of the movable plate and the side of the movable frame by bolts, and multiple ball bearings are provided, and the outer walls of the multiple ball bearings are rollingly connected to the outer wall of the shaft core.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] When the present invention limits the left and right sides of the shaft core through the fixing mechanism, the installation block pushes the wedge-shaped strip to move downward, the wedge-shaped strip pushes the wedge-shaped block to move and drives the moving plate and the moving frame to move, the moving plate and the moving frame drive the two arc-shaped limiting plates to approach each other, and drive a plurality of balls to limit and guide the front and rear sides of the shaft core, and during the pressing process of the shaft core, it is not easy to deviate, thereby improving the stability of the shaft core and the pressing quality;

[0020] By turning on the power assembly, the bidirectional screw is driven to rotate, and the two threaded sleeves are driven to approach each other, thereby driving the two mounting blocks to approach each other, and driving the fixed blocks to approach each other. The fixing groove on the fixed block supports and limits the shaft core, and the guide wheel on the fixed block limits and guides the shaft core. The upper end of the shaft core is pressed by the pressure head, so that the shaft core is pressed into the fixed section, ensuring that the shaft core is not easily offset or skewed during the pressing process, thereby improving the quality of the shaft core pressing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 It is a schematic bottom view of the three-dimensional structure of the present invention;

[0023] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the mounting block of the present invention;

[0025] Figure 5 It is an exploded view of the three-dimensional structure of the limiting shell of the present invention;

[0026] Figure 6 It is an exploded view of the three-dimensional structure of the connecting shaft of the present invention;

[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of the arc-shaped limiting plate of the present invention;

[0028] Figure 8It is an exploded view of the three-dimensional structure of the wedge block of the present invention;

[0029] Fig. 9 It is a schematic cross-sectional view of the three-dimensional structure of the fixing box of the present invention.

[0030] In the figure:

[0031] 1. Mounting plate; 101. Support rod; 102. Fixing plate; 103. Fixing assembly; 4. Fixing section; 5. Shaft core;

[0032] 2. Fixing mechanism; 201. Cylinder; 202. Pressing plate; 203. Supporting plate; 204. Fixing rod; 205. Power assembly; 206. Bidirectional screw rod; 207. Threaded sleeve; 208. Mounting block; 209. Limiting shell; 210. Sliding bar; 211. Groove body; 212. Fixing block; 213. Connecting shaft; 214. Connecting block; 215. Fixing groove; 216. Guide wheel; 217. Press head;

[0033] 3. Limiting mechanism; 301. Fixed box; 302. Wedge strip; 303. Wedge block; 304. Moving plate; 305. Elastic member; 306. Through slot; 307. Limiting rod; 308. Moving frame; 309. Arc-shaped limiting plate; 310. Ball. DETAILED DESCRIPTION

[0034] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0036] like Figure 1-Figure 9 As shown, the present application provides a mandrel pressing device for a steering knuckle of an automobile, comprising: a mounting plate 1, a plurality of support rods 101 are fixedly mounted on the top surface of the mounting plate 1, a fixing plate 102 is fixedly mounted on the upper ends of the plurality of support rods 101, a fixing assembly 103 is arranged on the mounting plate 1, a fixing section 4 is arranged on the fixing assembly 103, an axle core 5 is arranged above the fixing section 4, and further comprising:

[0037] The fixing mechanism 2 is arranged above the mounting plate 1. The fixing mechanism 2 includes a support plate 203 located above the mounting plate 1. A mounting block 208 is arranged above the support plate 203. A fixing block 212 is arranged on one side of the mounting block 208. A guide wheel 216 is rotatably installed at the lower end of the fixing block 212. The fixing mechanism 2 is used to press the shaft core 5 for guiding;

[0038] Specifically, Figure 1-Figure 6 As shown, a plurality of through holes are formed on the top surface of the support plate 203, and the inner walls of the plurality of through holes are respectively slidably connected to the outer walls of the plurality of support rods 101, a cylinder 201 is fixedly installed on the top surface of the fixed plate 102, and the lower end of the cylinder 201 slides through the top surface of the fixed plate 102 and extends to the bottom of the fixed plate 102, and a pressure plate 202 is fixedly installed on the lower end of the cylinder 201.

[0039] In this embodiment: the pressure plate 202 is driven to move by the provided cylinder 201, and the provided support rod 101 limits the support plate 203, so that the movement of the support plate 203 is more stable.

[0040] Specifically, Figure 1-Figure 6 As shown, a pressing head 217 is fixedly installed on the middle bottom surface of the pressing plate 202, and the lower end of the pressing head 217 abuts against the upper end of the shaft core 5. Two fixing rods 204 are fixedly installed on the bottom surface of the pressing plate 202, and the lower ends of the two fixing rods 204 are fixedly connected to the top surface of the support plate 203.

[0041] In this embodiment, the upper end of the shaft core 5 is pressed by the provided pressing head 217 , so that the shaft core 5 is pressed into the fixing section 4 .

[0042] Specifically, Figure 1-Figure 6 As shown, a power assembly 205 is fixedly installed on the side of the support plate 203, a bidirectional screw rod 206 is fixedly installed on one end of the power assembly 205, two threaded sleeves 207 are threadedly installed on the outer wall of the bidirectional screw rod 206, and two mounting blocks 208 are provided. The sides of the two threaded sleeves 207 are fixedly connected to the sides of the two mounting blocks 208 respectively.

[0043] In this embodiment: the power assembly 205 is provided to drive the bidirectional screw rod 206 to rotate, and the bidirectional screw rod 206 drives the two threaded sleeves 207 to move closer to or away from each other, thereby driving the two mounting blocks 208 to move closer to or away from each other.

[0044] Specifically, Figure 1-Figure 6 As shown, two fixed blocks 212 and two guide wheels 216 are provided, the outer walls of the two guide wheels 216 are rollingly connected to the outer wall of the shaft core 5, the top surfaces of the two mounting blocks 208 are respectively provided with grooves 211, the upper end sides of the two fixed blocks 212 are respectively provided with fixed grooves 215, and the inner walls of the two fixed grooves 215 are movably connected to the outer wall of the shaft core 5.

[0045] In this embodiment: the installation block 208 and the groove body 211 are provided to limit the shaft core 5 and play a role of back-pulling. The guide wheel 216 is provided to further limit and guide the shaft core 5, making the shaft core 5 more stable.

[0046] Specifically, Figure 1-Figure 6 As shown, connecting shafts 213 are respectively installed through the sides of the two fixed blocks 212, and the two connecting shafts 213 are respectively movably connected to the inner walls of the two fixed grooves 215, and connecting blocks 214 are respectively fixedly installed on the upper and lower sides of the two mounting blocks 208, and the connecting blocks 214 are movably connected to the sides of the fixed blocks 212 and the outer walls of the connecting shafts 213 at the sides close to each other.

[0047] In this embodiment, the fixing block 212 and the connecting shaft 213 are limited by the provided connecting block 214 .

[0048] Specifically, Figure 1-Figure 6 As shown, the bottom surfaces of the two mounting blocks 208 are respectively fixedly mounted with limit shells 209 , the top surface of the support plate 203 is fixedly mounted with a slide bar 210 , and the inner walls of the two limit shells 209 are slidably connected with the outer walls of the slide bar 210 .

[0049] In this embodiment, the position-limiting shell 209 is limited by the provided sliding bar 210 , thereby limiting the position of the mounting block 208 .

[0050] The limiting mechanism 3 is arranged below the support plate 203 . The limiting mechanism 3 includes an arc-shaped limiting plate 309 below the support plate 203 . A ball 310 is movably mounted on the inner wall of the arc-shaped limiting plate 309 . The limiting mechanism 3 is used to guide and limit the shaft core 5 .

[0051] Specifically, Figure 7-Figure 9 As shown, two fixed boxes 301 are fixedly installed on the bottom surface of the support plate 203, wedge blocks 303 are slidably installed on the inner walls of the two fixed boxes 301, and wedge strips 302 are fixedly installed on the top surfaces of the two wedge blocks 303. The upper ends of the two wedge strips 302 slide through the upper inner walls of the two fixed boxes 301 and the bottom surface of the support plate 203 and extend to the top of the support plate 203, and the side surfaces of the two wedge strips 302 are slidably connected to the bottom surfaces of the two mounting blocks 208.

[0052] In this embodiment, the wedge-shaped bar 302 is provided, and when the mounting block 208 moves, the wedge-shaped bar 302 is pushed to move downward, thereby driving the wedge-shaped block 303 to move.

[0053] Specifically, Figure 7-Figure 9As shown, a movable plate 304 and a movable frame 308 are slidably installed on the inner walls of the two fixed boxes 301 respectively, the top surface of the movable plate 304 and the top surface of one end of the movable frame 308 are slidably connected to the side surfaces of the two wedge blocks 303 respectively, and elastic members 305 are fixedly installed on the side surfaces of the movable plate 304 and the side surfaces of the movable frame 308 respectively, and the other ends of the multiple elastic members 305 are fixedly connected to the inner walls of one side of the two fixed boxes 301 respectively.

[0054] In this embodiment, when the two wedge blocks 303 move downward, they push the moving plate 304 and the moving frame 308 to move and squeeze the elastic member 305. When the wedge blocks 303 move upward, the moving frame 308 and the moving plate 304 return to their original positions.

[0055] Specifically, Figure 7-Figure 9 As shown, two fixed boxes 301 have through grooves 306 on their sides, the inner walls of the two through grooves 306 are respectively slidably connected to the side of the movable plate 304 and the side of the movable frame 308, two limit rods 307 are slidably installed on the side of the movable plate 304 and the side of the movable frame 308, and both ends of the plurality of limit rods 307 are respectively fixedly connected to the inner walls on both sides of the two through grooves 306, two arc-shaped limit plates 309 are provided, and the outer walls of the two arc-shaped limit plates 309 are respectively fixedly connected to the side of the movable plate 304 and the side of the movable frame 308 by bolts, and a plurality of ball bearings 310 are provided, and the outer walls of the plurality of ball bearings 310 are rollingly connected to the outer wall of the shaft core 5.

[0056] In this embodiment: the movable plate 304 and the movable frame 308 are limited by the set limit rod 307, and the movable plate 304 and the movable frame 308 can mobilize the two arc-shaped limit plates 309 to approach each other, and the multiple balls 310 on the two arc-shaped limit plates 309 limit and guide the shaft core 5, further improving the stability of the installation of the shaft core 5.

[0057] The specific solution is as follows: the fixing section 4 is fixed by the fixing assembly 103, and the power assembly 205 is turned on to drive the bidirectional screw rod 206 to rotate, drive the two threaded sleeves 207 to approach each other, thereby drive the two mounting blocks 208 to approach each other, drive the fixing blocks 212 to approach each other, the fixing groove 215 on the fixing block 212 supports and limits the shaft core 5, and the guide wheel 216 on the fixing block 212 limits and guides the shaft core 5, and when the mounting block 208 moves, the mounting block 208 pushes the wedge strip 302 to move downward, and the wedge strip 302 pushes the wedge block 303 to move and drive The movable plate 304 and the movable frame 308 move, and the movable plate 304 and the movable frame 308 drive the two arc-shaped limit plates 309 to approach each other, and drive multiple balls 310 to limit and guide the front and rear sides of the shaft core 5. During the pressing process of the shaft core 5, it is not easy to deviate, thereby improving the stability of the shaft core 5 and the quality of pressing. By opening the cylinder 201, the pressure plate 202, the fixed rod 204 and the support plate 203 are driven to move downward, and the pressure head 217 presses the upper end of the shaft core 5, so that the shaft core 5 is pressed into the fixed node 4, ensuring that the shaft core 5 is not easy to deviate and skew during the pressing process, thereby improving the quality of pressing the shaft core 5.

[0058] A person skilled in the art should understand that the discussion of any of the above embodiments is only exemplary; within the scope of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0059] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A mandrel pressing device for a steering knuckle of an automobile, comprising: A mounting plate (1), wherein a plurality of support rods (101) are fixedly mounted on the top surface of the mounting plate (1), a fixing plate (102) is fixedly mounted on the upper ends of the plurality of support rods (101), a fixing assembly (103) is arranged on the mounting plate (1), a fixing section (4) is arranged on the fixing section (103), and an axis core (5) is arranged above the fixing section (4), characterized in that it further comprises: A fixing mechanism (2), the fixing mechanism (2) being arranged above the mounting plate (1), the fixing mechanism (2) comprising a support plate (203) located above the mounting plate (1), a mounting block (208) being arranged above the support plate (203), a fixing block (212) being arranged on one side of the mounting block (208), a guide wheel (216) being rotatably mounted on the lower end of the fixing block (212), and the fixing mechanism (2) being used for guiding and pressing the shaft core (5); A limiting mechanism (3), the limiting mechanism (3) being arranged below the support plate (203), the limiting mechanism (3) comprising an arc-shaped limiting plate (309) located below the support plate (203), a ball bearing (310) being movably mounted on the inner wall of the arc-shaped limiting plate (309), and the limiting mechanism (3) being used for guiding and limiting the shaft core (5).

2. A mandrel pressing device for a steering knuckle of an automobile according to claim 1, characterized in that: The top surface of the support plate (203) is provided with a plurality of through holes, the inner walls of the plurality of through holes are respectively slidably connected to the outer walls of the plurality of support rods (101), the top surface of the fixed plate (102) is fixedly mounted with a cylinder (201), the lower end of the cylinder (201) slides through the top surface of the fixed plate (102) and extends to the bottom of the fixed plate (102), and the lower end of the cylinder (201) is fixedly mounted with a pressure plate (202).

3. A mandrel pressing device for a steering knuckle of an automobile according to claim 2, characterized in that: A pressure head (217) is fixedly mounted on the middle bottom surface of the pressure plate (202), the lower end of the pressure head (217) is in contact with the upper end of the shaft core (5), and two fixing rods (204) are fixedly mounted on the bottom surface of the pressure plate (202), the lower ends of the two fixing rods (204) are fixedly connected to the top surface of the support plate (203).

4. A mandrel pressing device for a steering knuckle of an automobile according to claim 3, characterized in that: A power assembly (205) is fixedly mounted on the side of the support plate (203); a bidirectional screw rod (206) is fixedly mounted on one end of the power assembly (205); two threaded sleeves (207) are threadedly mounted on the outer wall of the bidirectional screw rod (206); two mounting blocks (208) are provided; and the sides of the two threaded sleeves (207) are respectively fixedly connected to the sides of the two mounting blocks (208).

5. A mandrel pressing device for a steering knuckle of an automobile according to claim 4, characterized in that: Two of the fixed blocks (212) and guide wheels (216) are provided, and the outer walls of the two guide wheels (216) are rollingly connected to the outer wall of the shaft core (5). The top surfaces of the two mounting blocks (208) are respectively provided with groove bodies (211). The upper end side surfaces of the two fixed blocks (212) are respectively provided with fixed grooves (215), and the inner walls of the two fixed grooves (215) are movably connected to the outer wall of the shaft core (5).

6. A mandrel pressing device for a steering knuckle of an automobile according to claim 5, characterized in that: The two fixing blocks (212) are respectively provided with connecting shafts (213) penetrating the side surfaces thereof, and the two connecting shafts (213) are respectively movably connected to the inner walls of the two fixing grooves (215), and the two mounting blocks (208) are respectively provided with connecting blocks (214) fixedly installed on the upper and lower side surfaces thereof, and the connecting blocks (214) are movably connected to the side surfaces of the fixing blocks (212) and the outer walls of the connecting shafts (213) at the sides close to each other.

7. A mandrel pressing device for a steering knuckle of an automobile according to claim 6, characterized in that: The bottom surfaces of the two mounting blocks (208) are respectively fixedly mounted with a limiting shell (209), the top surface of the support plate (203) is fixedly mounted with a sliding bar (210), and the inner walls of the two limiting shells (209) are slidably connected to the outer walls of the sliding bar (210).

8. The mandrel pressing device for a steering knuckle of an automobile according to claim 1, characterized in that: Two fixing boxes (301) are fixedly installed on the bottom surface of the support plate (203), and wedge blocks (303) are slidably installed on the inner walls of the two fixing boxes (301), and wedge strips (302) are fixedly installed on the top surfaces of the two wedge blocks (303). The upper ends of the two wedge strips (302) slide through the inner walls of the upper ends of the two fixing boxes (301) and the bottom surface of the support plate (203) and extend to the top of the support plate (203), and the side surfaces of the two wedge strips (302) are slidably connected to the bottom surfaces of the two mounting blocks (208).

9. A mandrel pressing device for a steering knuckle of an automobile according to claim 8, characterized in that: A movable plate (304) and a movable frame (308) are slidably mounted on the inner walls of the two fixed boxes (301), respectively; the top surface of the movable plate (304) and the top surface of one end of the movable frame (308) are slidably connected to the side surfaces of the two wedge blocks (303), respectively; elastic members (305) are fixedly mounted on the side surfaces of the movable plate (304) and the side surfaces of the movable frame (308), respectively; the other ends of the plurality of elastic members (305) are fixedly connected to the inner walls of one side of the two fixed boxes (301), respectively.

10. A mandrel pressing device for a steering knuckle of an automobile according to claim 9, characterized in that: The two sides of the two fixed boxes (301) are respectively provided with through grooves (306), the inner walls of the two through grooves (306) are respectively slidably connected to the side of the movable plate (304) and the side of the movable frame (308), and two limit rods (307) are respectively slidably installed on the side of the movable plate (304) and the side of the movable frame (308), and the two ends of the plurality of limit rods (307) are respectively fixedly connected to the inner walls of both sides of the two through grooves (306), two arc-shaped limit plates (309) are provided, and the outer walls of the two arc-shaped limit plates (309) are respectively fixedly connected to the side of the movable plate (304) and the side of the movable frame (308) by bolts, and a plurality of balls (310) are provided, and the outer walls of the plurality of balls (310) are rollingly connected to the outer wall of the shaft core (5).

Images