Shot peening process and equipment for high-stress lightweight suspension springs

Abstract

The application discloses a shot blasting process and equipment for a high-stress lightweight suspension spring and relates to the technical field of suspension spring production. The application comprises a mounting seat, one end of the mounting seat is provided with a mounting rack, the outer wall of the mounting seat is provided with a transverse sliding table, the outer wall of the transverse sliding table is provided with a vertical sliding table, the outer wall of the vertical sliding table is provided with a movable table, and the application further comprises a clamping mechanism and a blanking mechanism. In the process of clamping the spring, the clamping mechanism and the blanking mechanism are used, the clamping block is in contact with the spur gear, the supporting block is fixed, the supporting block is prevented from loosening in the process of shot blasting, and the spring is prevented from sliding off; after the shot blasting is completed, the lower pressing block moves away from the supporting block, the spring is loosened, the movable plate moves upwards, the movable frame is pushed to move, the supporting block is driven to rotate, the spring falls into the collecting box for collection, the push plate slides in the placing groove, the steel shots in the placing groove are pushed out, and the steel shots are prevented from accumulating in the placing groove.

Description

Technical Field

[0001] This invention relates to the field of suspension spring manufacturing technology, specifically to shot peening process and equipment for high-stress lightweight suspension springs. Background Technology

[0002] Automotive suspension springs are the elastic elements in a car suspension system, providing an elastic connection between the axle and the frame or body. They bear and transmit vertical loads, and mitigate and suppress impacts caused by uneven road surfaces. The automotive suspension is a general term for all force-transmitting connections between the frame (or monocoque chassis) and the axle (or wheels). The main function of the suspension is to transmit the vertical reaction forces (support forces), longitudinal reaction forces (driving and braking forces), and lateral reaction forces exerted on the wheels by the road surface, as well as the torques formed by these reaction forces, to the frame (or monocoque chassis) to ensure the normal driving of the vehicle. When manufacturing car suspension springs, shot peening is required. Shot peening is a widely used surface strengthening process in factories. It involves using shot to bombard the surface of a workpiece and implant residual compressive stress, thereby improving the fatigue strength of the workpiece. It is widely used to improve the mechanical strength, wear resistance, fatigue resistance, and corrosion resistance of parts. The advantages of shot peening are simple equipment, low cost, no limitation on workpiece shape and position, and convenient operation. The disadvantages are a harsh working environment, low unit output, and lower efficiency than shot blasting. Types of shot used for shot peening include steel shot, cast iron shot, glass shot, and ceramic shot.

[0003] When shot peening springs, the springs need to be fixed in place. A circular placement groove is usually provided for the springs to be placed in. However, steel shot can easily accumulate in the placement groove during the shot peening process, which will affect the subsequent placement of the springs. In order to avoid the accumulation of steel shot in the placement groove, a shot peening process and equipment for high-stress lightweight suspension springs are provided. Summary of the Invention

[0004] The purpose of this invention is to provide a shot peening process and equipment for high-stress, lightweight suspension springs in order to avoid the accumulation of steel shot in the placement tank.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a shot peening treatment device for high-stress lightweight suspension springs, comprising a mounting base, a mounting frame at one end of the mounting base, a transverse slide table mounted on the outer wall of the mounting base, a vertical slide table mounted on the outer wall of the transverse slide table, a movable platform mounted on the outer wall of the vertical slide table, the movable platform moving via the transverse slide table and the vertical slide table, a nozzle mounted on the outer wall of the movable platform, the movable platform driving the nozzle to move, a collection box at one end of the mounting frame for collecting the shot-peened springs, the mounting frame clamping and fixing the springs via a clamping mechanism, and the mounting frame automatically unloading the shot-peened springs via a feeding mechanism.

[0006] The clamping mechanism includes a hydraulic cylinder mounted on the top of the mounting frame. The output end of the hydraulic cylinder is connected to a movable plate, and a lower pressure block is fixedly connected to the bottom end of the movable plate. A connecting column is rotatably connected to the inner cavity of the mounting frame, and a support block is fixedly connected to the outer wall of the connecting column. A placement groove is provided at the top of the support block for placing the spring. The hydraulic cylinder is used to drive the lower pressure block to move through the movable plate. The lower pressure block moves downward and together with the support block clamps and fixes the spring.

[0007] As a further embodiment of the present invention: the clamping mechanism further includes a spur gear, which is fixedly connected to one end of the connecting column. A pressing plate extending into the inner cavity of the mounting frame is slidably connected inside the mounting frame. The pressing plate is located below the movable plate. A protrusion is fixedly connected to the outer wall of the pressing plate. A locking block is slidably connected to one end of the protrusion inside the mounting frame. The movement of the pressing plate pushes the locking block to move through the protrusion. A return spring is connected between the locking block and the mounting frame. The return spring is used to reset the locking block.

[0008] As a further embodiment of the present invention: the feeding mechanism includes a movable frame, which is slidably connected to the interior of the mounting frame. The movable frame is in contact with the spur gear. A connecting spring is connected between the movable frame and the mounting frame, and the connecting spring is used to reset the movable frame. A fixed rod extending into the interior of the support block is fixedly connected inside the mounting frame. A first bevel gear is fixedly connected to one end of the fixed rod. A second bevel gear is rotatably connected to the interior of the support block, located on the outer wall of the first bevel gear. A lead screw is fixedly connected to one end of the second bevel gear. A push plate is slidably connected to the inner wall of the placement groove. The push plate is used to push out the steel shot in the placement groove. A displacement rod is fixedly connected to the bottom end of the push plate. The lead screw extends into the interior of the displacement rod and is used to drive the displacement rod to move. The movement of the displacement rod drives the push plate to move.

[0009] As a further embodiment of the present invention: the outer wall of the movable plate matches the inner wall of the mounting bracket, and the bottom shape of the locking block engages with the spur gear.

[0010] As a further embodiment of the present invention: the extrusion plate is provided with a first inclined surface at one end of the inner cavity of the mounting frame, the outer wall of the card block is provided with a second inclined surface, and one end of the protrusion is in contact with the second inclined surface.

[0011] As a further embodiment of the present invention: the movable frame is L-shaped, and one end of the movable frame extends above the movable plate.

[0012] As a further embodiment of the present invention: the outer wall of the movable frame is provided with a toothed groove, which meshes with the spur gear.

[0013] As a further embodiment of the present invention: the first bevel gear meshes with the second bevel gear, and the bottom end of the displacement rod is provided with a threaded hole, which matches the lead screw.

[0014] The processing steps of shot peening equipment for high-stress lightweight suspension springs are as follows:

[0015] Step 1: Place the spring into the inner cavity of the placement slot, start the hydraulic cylinder, the hydraulic cylinder rotates and drives the movable plate to move, the movable plate moves and drives the lower pressure block to move downward, the lower pressure block and the support block together clamp and fix the spring;

[0016] Step 2: The movable table is moved by the horizontal slide and the vertical slide, and the movement of the movable table moves the nozzle, which then performs shot peening on the spring.

[0017] Step 3: After completion, the pressing block moves away from the support block, releasing the spring. During this process, the support block rotates, and the spring falls into the collection box for collection. At the same time, the push plate slides in the placement groove, pushing out the steel shot in the placement groove.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] By setting up a clamping mechanism and a feeding mechanism, during the clamping process of the spring, the clamping block contacts the spur gear to fix the support block and prevent the support block from loosening and causing the spring to slip during shot peening. After shot peening is completed, the pressing block moves away from the support block, releases the spring, the movable plate moves upward, pushes the movable frame to move, drives the support block to rotate, and the spring falls into the collection box for collection. At the same time, the push plate slides in the placement groove to push out the steel shot in the placement groove, which helps to prevent the steel shot from accumulating in the placement groove. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the mounting bracket of the present invention;

[0022] Figure 3 This is a cross-sectional view of the mounting bracket of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of the pressure block of the present invention;

[0024] Figure 5 This is a cross-sectional view of the connecting column of the present invention;

[0025] Figure 6 For the present invention Figure 5 Enlarged view of point A in the middle;

[0026] Figure 7 This is a schematic diagram of the installation of the movable frame of the present invention.

[0027] In the diagram: 1. Mounting base; 2. Horizontal slide table; 3. Vertical slide table; 4. Movable table; 5. Nozzle; 6. Mounting frame; 7. Collection box; 8. Clamping mechanism; 801. Hydraulic cylinder; 802. Movable plate; 803. Lower pressure block; 804. Connecting column; 805. Support block; 806. Placement slot; 807. Spur gear; 808. Extrusion plate; 809. Protrusion; 810. Locking block; 811. Return spring; 9. Feeding mechanism; 901. Movable frame; 902. Connecting spring; 903. Push plate; 904. Displacement rod; 905. Fixed rod; 906. First bevel gear; 907. Second bevel gear; 908. Lead screw. Detailed Implementation

[0028] 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.

[0029] Please see Figures 1-7In this embodiment of the invention, the shot peening equipment for high-stress lightweight suspension springs includes a mounting base 1, with a mounting frame 6 at one end of the mounting base 1. A transverse slide 2 is mounted on the outer wall of the mounting base 1, a vertical slide 3 is mounted on the outer wall of the transverse slide 2, and a movable platform 4 is mounted on the outer wall of the vertical slide 3. The movable platform 4 moves via the transverse slide 2 and the vertical slide 3. A nozzle 5 is mounted on the outer wall of the movable platform 4, which drives the nozzle 5 to move. A collection box 7 is provided at one end of the mounting frame 6, which collects the shot-peened springs. The mounting frame 6 clamps and fixes the springs via a clamping mechanism 8, and automatically unloads the shot-peened springs via a feeding mechanism 9. The clamping mechanism 8 includes a hydraulic cylinder 801, which is mounted on the top of the mounting frame 6. The output end of the hydraulic cylinder 801 is connected to a movable plate 802, and a lower pressure block 803 is fixedly connected to the bottom end of the movable plate 802. A connecting column 80 is rotatably connected to the inner cavity of the mounting frame 6. 4. A support block 805 is fixedly connected to the outer wall of the connecting column 804. A placement groove 806 is provided at the top of the support block 805 for placing the spring. The hydraulic cylinder 801 is used to drive the lower pressure block 803 to move through the movable plate 802. The lower pressure block 803 moves downward and clamps and fixes the spring together with the support block 805. The clamping mechanism 8 also includes a spur gear 807, which is fixedly connected to one end of the connecting column 804. A pressing plate 808 extending into the inner cavity of the mounting frame 6 is slidably connected inside the mounting frame 6. The pressing plate 808 is located below the movable plate 802. A protrusion 809 is fixedly connected to the outer wall of the pressing plate 808. A locking block 810 is slidably connected to one end of the protrusion 809 inside the mounting frame 6. The movement of the pressing plate 808 pushes the locking block 810 to move through the protrusion 809. A return spring 811 is connected between the locking block 810 and the mounting frame 6. The return spring 811 is used to reset the locking block 810.

[0030] In this embodiment: the spring is placed into the inner cavity of the placement slot 806, the hydraulic cylinder 801 is activated, the hydraulic cylinder 801 rotates and drives the movable plate 802 to move, the movable plate 802 moves and drives the lower pressure block 803 to move downward, the lower pressure block 803 and the support block 805 together clamp and fix the spring.

[0031] During this process, the movable plate 802 moves downward and contacts the extrusion plate 808, pushing the extrusion plate 808 to move. The movement of the extrusion plate 808 causes the protrusion 809 to move, and the movement of the protrusion 809 pushes the locking block 810 to move, which in turn squeezes the reset spring 811. The locking block 810 contacts the spur gear 807, fixing the spur gear 807, and then fixing the support block 805 to prevent the support block 805 from loosening during shot peening and causing the spring to slip off.

[0032] The movable table 4 is moved by the horizontal slide 2 and the vertical slide 3. The movement of the movable table 4 moves the nozzle 5, and the nozzle 5 performs shot peening on the spring.

[0033] Please refer to this carefully. Figures 2-7 The unloading mechanism 9 includes a movable frame 901, which is slidably connected to the interior of the mounting frame 6. The movable frame 901 is in contact with a spur gear 807. A connecting spring 902 connects the movable frame 901 and the mounting frame 6, and the connecting spring 902 is used to reset the movable frame 901. A fixed rod 905 extending into the interior of the support block 805 is fixedly connected inside the mounting frame 6. One end of the fixed rod 905 is fixedly connected to a first bevel gear 906. The interior of the support block 805 is located at the first... A second bevel gear 907 is rotatably connected to the outer wall of a bevel gear 906. A lead screw 908 is fixedly connected to one end of the second bevel gear 907. A push plate 903 is slidably connected to the inner wall of the placement groove 806. The push plate 903 is used to push out the steel shot in the placement groove 806. A displacement rod 904 is fixedly connected to the bottom end of the push plate 903. The lead screw 908 extends into the interior of the displacement rod 904. The lead screw 908 is used to drive the displacement rod 904 to move. The movement of the displacement rod 904 drives the push plate 903 to move.

[0034] In this embodiment: after shot peening is completed, the lower pressure block 803 moves away from the support block 805, the spring is released, the movable plate 802 separates from the extrusion plate 808, the locking block 810 is reset by the elastic force of the reset spring 811 and separates from the spur gear 807, so that the connecting column 804 can rotate.

[0035] The movable plate 802 continues to move upward, pushing the movable frame 901 to move, which compresses the connecting spring 902. The movement of the movable frame 901 drives the spur gear 807 to rotate, the rotation of the spur gear 807 drives the connecting column 804 to rotate, and the rotation of the connecting column 804 drives the support block 805 to rotate, causing the spring to fall into the collection box 7 for collection.

[0036] As the support block 805 rotates, the second bevel gear 907 moves along the outer wall of the first bevel gear 906, thereby causing the second bevel gear 907 to rotate and drive the lead screw 908 to rotate. The rotation of the lead screw 908 causes the displacement rod 904 to move, and the movement of the displacement rod 904 causes the push plate 903 to slide in the placement groove 806, pushing out the steel shot in the placement groove 806.

[0037] Please refer to this carefully. Figure 3 The outer wall of the movable plate 802 matches the inner wall of the mounting frame 6, the bottom shape of the locking block 810 engages with the spur gear 807, the pressing plate 808 is provided with a first inclined surface at one end of the inner cavity of the mounting frame 6, the outer wall of the locking block 810 is provided with a second inclined surface, and one end of the protrusion 809 is in contact with the second inclined surface.

[0038] In this embodiment: the movable plate 802 moves downward and contacts the extrusion plate 808, pushing the extrusion plate 808 to move. The movement of the extrusion plate 808 drives the protrusion 809 to move, and the movement of the protrusion 809 pushes the locking block 810 to move, causing compression on the reset spring 811. The locking block 810 contacts the spur gear 807, fixing the spur gear 807, and then fixing the support block 805 to prevent the support block 805 from loosening during shot peening and causing the spring to slip off.

[0039] Please refer to this carefully. Figure 2 , Figure 3 and Figure 7 The movable frame 901 is L-shaped, with one end extending above the movable plate 802. The outer wall of the movable frame 901 is provided with toothed grooves that mesh with the spur gear 807.

[0040] In this embodiment: the movable plate 802 continues to move upward, pushing the movable frame 901 to move, which compresses the connecting spring 902. The movement of the movable frame 901 drives the spur gear 807 to rotate, the rotation of the spur gear 807 drives the connecting column 804 to rotate, and the rotation of the connecting column 804 drives the support block 805 to rotate, causing the spring to fall into the collection box 7 for collection.

[0041] Please refer to this carefully. Figure 5 and Figure 6 The first bevel gear 906 meshes with the second bevel gear 907, and the bottom end of the displacement rod 904 is provided with a threaded hole that matches the lead screw 908.

[0042] In this embodiment: when the support block 805 rotates, the second bevel gear 907 moves along the outer wall of the first bevel gear 906, thereby the rotation of the second bevel gear 907 drives the lead screw 908 to rotate, the rotation of the lead screw 908 drives the displacement rod 904 to move, and the movement of the displacement rod 904 drives the push plate 903 to slide in the placement groove 806, pushing out the steel shot in the placement groove 806.

[0043] Please refer to this carefully. Figures 1-7 The processing technology of shot peening equipment for high-stress lightweight suspension springs, and the specific steps are as follows:

[0044] Step 1: Place the spring into the inner cavity of the placement slot 806, start the hydraulic cylinder 801, the hydraulic cylinder 801 rotates and drives the movable plate 802 to move, the movable plate 802 moves and drives the lower pressure block 803 to move downward, the lower pressure block 803 and the support block 805 together clamp and fix the spring.

[0045] Step 2: The movable table 4 is moved by the horizontal slide table 2 and the vertical slide table 3. The movement of the movable table 4 moves the nozzle 5, and the nozzle 5 performs shot peening on the spring.

[0046] Step 3: After completion, the pressing block 803 moves away from the support block 805, releasing the spring. During this process, the support block 805 rotates, and the spring falls into the collection box 7 for collection. At the same time, the push plate 903 slides in the placement groove 806, pushing out the steel shot in the placement groove 806.

[0047] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A shot peening device for high-stress lightweight suspension springs, comprising a mounting base (1), a mounting frame (6) provided at one end of the mounting base (1), a transverse slide (2) mounted on the outer wall of the mounting base (1), a vertical slide (3) mounted on the outer wall of the transverse slide (2), a movable platform (4) mounted on the outer wall of the vertical slide (3), the movable platform (4) moving via the transverse slide (2) and the vertical slide (3), a nozzle (5) mounted on the outer wall of the movable platform (4), the movable platform (4) used to drive the nozzle (5) to move, and a collection box (7) provided at one end of the mounting frame (6), the collection box (7) used to collect the shot-peened springs, characterized in that, The mounting bracket (6) clamps and fixes the spring through the clamping mechanism (8), and the mounting bracket (6) automatically unloads the shot-peened spring through the unloading mechanism (9); The clamping mechanism (8) includes a hydraulic cylinder (801), which is mounted on the top of the mounting frame (6). The output end of the hydraulic cylinder (801) is connected to a movable plate (802), and the bottom end of the movable plate (802) is fixedly connected to a lower pressure block (803). The inner cavity of the mounting frame (6) is rotatably connected to a connecting column (804), and the outer wall of the connecting column (804) is fixedly connected to a support block (805). The top end of the support block (805) is provided with a placement groove (806), which is used to place the spring. The hydraulic cylinder (801) is used to drive the lower pressure block (803) to move through the movable plate (802). The lower pressure block (803) moves downward and together with the support block (805) clamps and fixes the spring. The clamping mechanism (8) also includes a spur gear (807), which is fixedly connected to one end of the connecting column (804). The mounting bracket (6) is slidably connected to a pressing plate (808) extending into the inner cavity of the mounting bracket (6). The pressing plate (808) is located below the movable plate (802). The outer wall of the pressing plate (808) is fixedly connected to a protrusion (809). The mounting bracket (6) is slidably connected to a locking block (810) at one end of the protrusion (809). The pressing plate (808) moves by pushing the locking block (810) through the protrusion (809). A return spring (811) is connected between the locking block (810) and the mounting bracket (6). The return spring (811) is used to reset the locking block (810).

2. The shot peening equipment for high-stress lightweight suspension springs according to claim 1, characterized in that, The feeding mechanism (9) includes a movable frame (901), which is slidably connected to the interior of the mounting frame (6). The movable frame (901) is in contact with the spur gear (807). A connecting spring (902) is connected between the movable frame (901) and the mounting frame (6). The connecting spring (902) is used to reset the movable frame (901). A fixed rod (905) extending into the interior of the support block (805) is fixedly connected inside the mounting frame (6). One end of the fixed rod (905) is fixedly connected to a first bevel gear (906). The interior of the support block (805) is located in... The outer wall of the first bevel gear (906) is rotatably connected to the second bevel gear (907), and one end of the second bevel gear (907) is fixedly connected to the lead screw (908). The inner wall of the placement groove (806) is slidably connected to the push plate (903), which is used to push out the steel shot in the placement groove (806). The bottom end of the push plate (903) is fixedly connected to the displacement rod (904), and the lead screw (908) extends into the interior of the displacement rod (904). The lead screw (908) is used to drive the displacement rod (904) to move, and the movement of the displacement rod (904) drives the push plate (903) to move.

3. The shot peening equipment for high-stress lightweight suspension springs according to claim 1, characterized in that, The outer wall of the movable plate (802) matches the inner wall of the mounting bracket (6), and the bottom end of the locking block (810) engages with the spur gear (807).

4. The shot peening equipment for high-stress lightweight suspension springs according to claim 1, characterized in that, The extrusion plate (808) has a first inclined surface at one end of the inner cavity of the mounting bracket (6), the outer wall of the card block (810) has a second inclined surface, and one end of the protrusion (809) is in contact with the second inclined surface.

5. The shot peening equipment for high-stress lightweight suspension springs according to claim 2, characterized in that, The movable frame (901) is L-shaped, and one end of the movable frame (901) extends above the movable plate (802).

6. The shot peening equipment for high-stress lightweight suspension springs according to claim 2, characterized in that, The outer wall of the movable frame (901) is provided with a toothed groove, which meshes with the spur gear (807).

7. The shot peening equipment for high-stress lightweight suspension springs according to claim 2, characterized in that, The first bevel gear (906) meshes with the second bevel gear (907), and the bottom end of the displacement rod (904) is provided with a threaded hole, which matches the lead screw (908).

8. The processing technology of the shot peening equipment for high-stress lightweight suspension springs according to claim 2, characterized in that, The specific steps are as follows: Step 1: Place the spring into the inner cavity of the placement slot (806), start the hydraulic cylinder (801), the hydraulic cylinder (801) rotates and drives the movable plate (802) to move, the movable plate (802) moves and drives the lower pressure block (803) to move downward, the lower pressure block (803) and the support block (805) together clamp and fix the spring; Step 2: The movable table (4) is moved by the horizontal slide (2) and the vertical slide (3). The movement of the movable table (4) moves the nozzle (5) and the nozzle (5) performs shot peening on the spring. Step 3: After completion, the pressing block (803) moves away from the support block (805) to release the spring. During this process, the support block (805) rotates and the spring falls into the collection box (7) for collection. At the same time, the push plate (903) slides in the placement groove (806) to push out the steel shot in the placement groove (806).

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