Guiding device of spear shot blasting gun

Abstract

A long spear shot blasting gun guiding device belongs to the technical field of machining auxiliary equipment and comprises an electric linear sliding table, a PLC (programmable logic controller), a rack, a fixing frame and a limiting mechanism. The electric linear sliding table is mounted at the front end of the rack, the upper end of the spear shot blasting gun is mounted on the front side of a sliding block of the electric linear sliding table, the limiting mechanism comprises a guide pulley, a fixed seat, a guide rod and a spring, and the guide pulley is rotationally mounted in the fixed seat through a bearing; the front ends of the plurality of guide rods are respectively mounted around the outer side end of the fixed seat, the plurality of springs are respectively and movably sleeved outside the plurality of guide rods, the fixed frame is of a hollow structure, and a plurality of shaft holes are respectively formed in two sides of the upper end and two sides of the lower end of the fixed frame; a plurality of guide rods of the limiting mechanisms are movably sleeved with the shaft holes respectively, limiting plates are installed at the positions, located on the outer side of the fixing frame, of the guide rods respectively, and the fixing frame is installed at the front lower end of the rack. According to the device, the labor intensity of workers is reduced, the body health of the workers is guaranteed, and the shot blasting machining quality of parts is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary mechanisms for shot peening equipment, and in particular to a guide device for a spear shot peening gun. Background Technology

[0002] In industrial production fields such as automobiles, aircraft, and ships, shot peening equipment (shot peening machines) is often used to perform shot peening on corresponding parts (using high-speed jets of sand and iron shot to impact the surface of the workpiece to improve some of its mechanical properties and change its surface condition). Due to structural limitations, existing shot peening equipment can only perform shot peening on the surface of corresponding parts, and it is powerless to perform shot peening on the deep blind holes inside long shaft hollow parts (such as the hollow turbine shaft of an aero engine).

[0003] To address the aforementioned technical problems, existing technologies typically involve installing a long nozzle at the front end of the shot peening head of the shot peening equipment. During operation, the operator holds the handle of the shot peening equipment and aligns the lower end of the long nozzle (a spear-shaped shot peening gun, connected to the shot peening tube of the shot peening equipment via a high-strength flexible hose) with the deep blind hole within the relevant hollow long shaft, performing shot peening from top to bottom and from bottom to top. However, this operating mode, due to limitations in equipment structure and usage, also presents the following technical problems. Firstly, requiring operators to manually approach the equipment for shot peening causes inconvenience and increases their workload. Furthermore, the excessive proximity of operators to the shot peening station can adversely affect their health due to the dust generated during shot peening. Secondly, manual operation of shot peening equipment is susceptible to damage due to vibrations and other factors affecting the operator. The long nozzle oscillates within the deep blind hole of the hollow shaft, impacting surface quality (e.g., the nozzle deviates to the left or right, resulting in excessive shot peening at the corresponding location within the blind hole, causing defects such as depressions). Therefore, a device capable of reliably controlling the long-spear shot peening gun for automatic shot peening within the deep blind hole of the long shaft in a stable, non-human-operated manner is particularly necessary. Utility Model Content

[0004] To overcome the shortcomings of existing shot peening equipment's spear-type shot peening guns, which are limited by their structure and have drawbacks as described in the background when shot peening deep blind holes of long shafts, this utility model provides a spear-type shot peening gun guide device for use in conjunction with shot peening equipment. During operation, under the control of PLC and other systems, the electric lead screw slide can drive the spear-type shot peening gun into the deep blind hole of long shafts at a constant speed for shot peening. It can also effectively limit the circumferential direction of the spear-type shot peening gun during its up or down movement and prevent it from swinging. This reduces the labor intensity of workers, ensures the health of workers, and improves the shot peening quality of parts.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A guide device for a spear shot peening gun includes an electric linear slide, a PLC, a frame, a fixed frame, and a limiting mechanism. The electric linear slide is installed at the front end of the frame, and the upper end of the spear shot peening gun of the shot peening equipment is installed in front of the sliding block of the electric linear slide. Multiple identical limiting mechanisms are provided, each including a guide pulley, a fixed seat, a guide rod, and a spring. A bearing is installed on the inner end of the guide pulley, and the guide pulley is rotatably mounted in the fixed seat via the bearing. Multiple guide rods and springs are provided, with the front ends of the guide rods installed around the outer perimeter of the fixed seat, and multiple springs movably sleeved on the outer ends of the guide rods. The fixed frame is a hollow structure, with multiple shaft holes on both sides of the upper and lower ends. The multiple guide rods of the multiple limiting mechanisms are movably sleeved in the multiple shaft holes, and limiting plates are installed on the outer positions of the multiple guide rods on the fixed frame. The fixed frame is installed at the lower front end of the frame.

[0007] Furthermore, the guide pulley and the inner end of the fixed seat are spaced apart.

[0008] Furthermore, the outer diameter of the guide rod is smaller than the inner diameter of the shaft hole, and the length of the spring is greater than the length of the guide rod.

[0009] Furthermore, the radii of the guide pulley groove are consistent with the outer radii of the spear shot peening gun, and the inner diameter of the groove is smaller than the radius of the spear shot peening gun.

[0010] Furthermore, the guide pulleys of the two sets of limiting mechanisms at the upper end and the guide pulleys of the two sets of limiting mechanisms at the lower end of the fixed frame are respectively in a face-to-face structure.

[0011] Furthermore, the spear-shaped shot peening gun is located between the grooves of the guide pulleys of the four sets of limiting mechanisms.

[0012] Furthermore, the distance between the grooves of the guide pulleys of the two sets of limiting mechanisms at the upper end of the fixed frame and the distance between the grooves of the guide pulleys of the two sets of limiting mechanisms at the lower end are smaller than the diameter of the spear shot peening gun.

[0013] Compared with existing technologies, the advantages of this invention are as follows: This invention is used in conjunction with a spear-type shot peening gun in a shot peening system. During operation, under the control of a PLC or similar system, the electric lead screw slide can drive the spear-type shot peening gun at a constant speed into the deep blind hole of a long shaft for shot peening, or after shot peening, separate it upwards from the upper end of the shaft to complete the shot peening process. The guide pulleys of four sets of limiting mechanisms can limit the circumferential direction of the spear-type shot peening gun's front, rear, left, and right sides, preventing the spear-type shot peening gun from swinging within the deep blind hole of the long shaft. This invention reduces the labor intensity of workers, ensures their health, and improves the quality of shot peening of components. In summary, this invention has good application prospects. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a schematic diagram of the front planar structure of this utility model.

[0016] Figure 2 This is a side view of the three-dimensional structure of this utility model.

[0017] Figure 3 This is a three-dimensional structural diagram of the limiting mechanism of this utility model.

[0018] Figure 4 This is a partial planar structural schematic diagram of the present invention.

[0019] Figure 5 , 6 This is a photograph of the actual application of this utility model. Detailed Implementation

[0020] Figure 1 , 2 As shown in Figures 3 and 4, a guide device for a spear shot peening gun includes an electric linear slide 1, a PLC (not shown in the figures; the PLC control of electrical equipment is a mature existing technology, and this application will not elaborate on the working principle of the PLC, nor will it provide any protection for its technical solution), a frame 2, a fixed frame 3, and a limiting mechanism 4. The electric linear slide 1 is vertically and fixedly installed at the front end of the frame 1. The upper rear end of the spear shot peening gun 5 of the shot peening equipment (connected to the shot peening pipe of the shot peening equipment via a high-strength flexible hose) is fixedly installed on the front side of the sliding block of the electric linear slide 1. There are four identical sets of limiting mechanisms 4. Each set of limiting mechanisms includes a guide pulley 41, a fixed seat 42, a guide rod 43, and a spring 44. The inner end of the fixed seat 42 has mounting holes 421 at the front and rear. The inner end of the guide pulley 41 is fixedly installed with a bearing. A shaft 422 is fixedly installed inside the inner ring of the bearing. The shaft 422 is fixedly installed in two mounting holes 421 of the fixed seat 42 on both sides. There are four guide rods 43 and four springs 44. The front ends of the four guide rods 43 are welded to the outer sides of the fixed seat 42. The four springs 44 are movably sleeved on the outer ends of the four guide rods 43. The fixed frame 3 is a hollow structure. The upper left and right sides and the lower left and right sides of the fixed frame 3 have four shaft holes. The four guide rods 43 of the four sets of limiting mechanisms are movably sleeved in the four shaft holes. A limiting plate with an outer diameter larger than the inner diameter of the shaft hole is welded to the four guide rods at the outer position of the fixed frame 3 (to prevent the guide rods from coming out of the shaft holes). The rear outer end of the fixed frame 3 is fixedly installed at the front lower end of the frame 2. The power output terminal of the PLC and the power input terminal of the electric linear slide 1 are connected by wires.

[0021] Figure 1, 2 As shown in Figures 3 and 4, the guide pulley 41 and the inner distance between the rear and left and right sides of the fixed base 42 are as follows. The outer diameter of the guide rod 43 is smaller than the inner diameter of the shaft hole, and the length of the spring 44 is greater than the length of the guide rod 43. The arc of the groove of the guide pulley 41 is consistent with the outer arc of the spear shot peening gun 5, and the inner diameter of the groove is smaller than the radius of the spear shot peening gun 5. The guide pulleys 41 of the two sets of limiting mechanisms at the upper end of the fixed frame and the guide pulleys 41 of the two sets of limiting mechanisms at the lower end are respectively in a face-to-face structure. The spear shot peening gun 5 is located between the grooves of the guide pulleys 41 of the four sets of limiting mechanisms. The distance between the grooves of the guide pulleys 41 of the two sets of limiting mechanisms at the upper end of the fixed frame and the distance between the grooves of the guide pulleys 41 of the two sets of limiting mechanisms at the lower end are smaller than the diameter of the spear shot peening gun 5.

[0022] Figure 1 , 2 As shown in Figures 3 and 4, the spear-type shot peening gun 5 of this utility model is used in conjunction with the shot peening equipment. During operation, after the power output terminal of the PLC controls the positive and negative power input terminals of the electric linear slide 1 to be energized, the sliding block of the electric linear slide 1 drives the spear-type shot peening gun 5 to move downward along the deep blind hole of the long axis type. After the power output terminal of the PLC controls the positive and negative power input terminals of the electric linear slide 1 to be energized, the sliding block of the electric linear slide 1 drives the spear-type shot peening gun 5 to move upward along the deep blind hole of the long axis type. During the upward or downward movement of the spear-type shot peening gun 5, the shot output from the shot peening tube of the shot peening equipment is ejected through the spray hole of the spear-type shot peening gun 5, which can perform shot peening processing on the deep blind hole of the long axis type from bottom to top or from top to bottom. In this new design, the spear-shaped shot peening gun 5 is located between the grooves of the guide pulleys 41 of the four sets of limiting mechanisms. The distance between the grooves of the guide pulleys 41 of the upper two sets of limiting mechanisms and the distance between the grooves of the guide pulleys 41 of the lower two sets of limiting mechanisms is less than the diameter of the spear-shaped shot peening gun 5. The front ends of the guide rods 43 are welded to the outer perimeter of the fixed base 42, and springs 44 are movably sleeved on the outer ends of the four guide rods 43. The springs can push the fixed base to move inward. Thus, the grooves of the guide pulleys 41 of the upper two sets of limiting mechanisms and the grooves of the guide pulleys 41 of the lower two sets of limiting mechanisms can effectively limit the circumferential movement of the spear-shaped shot peening gun 5 in the front, rear, left, and right sides, preventing it from swinging within deep blind holes of long shafts. This new design reduces the labor intensity of workers, ensures their health, and improves the quality of shot peening of components.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model.

[0024] Furthermore, it should be understood that although this specification describes the embodiments, the embodiments do not necessarily contain only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in the embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A guide device for a spear shot peening gun, comprising an electric linear slide, a PLC, a frame, and a fixing bracket, characterized in that, It also has a limiting mechanism; the electric linear slide is installed at the front end of the frame, and the upper end of the shot peening gun of the shot peening equipment is installed in front of the sliding block of the electric linear slide. There are multiple sets of the limiting mechanism. Each set of the limiting mechanism includes a guide pulley, a fixed seat, a guide rod, and a spring. A bearing is installed on the inner end of the guide pulley, and the guide pulley is rotatably installed in the fixed seat through the bearing. There are multiple guide rods and springs. The front ends of the multiple guide rods are respectively installed around the outer end of the fixed seat, and the multiple springs are respectively movably sleeved on the outer end of the multiple guide rods. The fixed frame is a hollow structure, and there are multiple shaft holes on both sides of the upper end and both sides of the lower end of the fixed frame. The multiple guide rods of the multiple sets of limiting mechanisms are respectively movably sleeved in the multiple shaft holes. Limiting plates are respectively installed on the outer positions of the multiple guide rods on the fixed frame. The fixed frame is installed at the lower front end of the frame.

2. The spear shot peening gun guide device according to claim 1, characterized in that, The distance between the guide pulley and the inner end of the fixed seat.

3. The spear shot peening gun guide device according to claim 1, characterized in that, The outer diameter of the guide rod is smaller than the inner diameter of the shaft hole, and the length of the spring is greater than the length of the guide rod.

4. The spear shot peening gun guide device according to claim 1, characterized in that, The guide pulley's groove curvature matches the outer curvature of the spear shot blasting gun, and the inner diameter of the groove is smaller than the radius of the spear shot blasting gun.

5. A spear shot peening gun guide device according to claim 1, characterized in that, The guide pulleys of the two sets of limiting mechanisms at the upper end of the fixed frame and the guide pulleys of the two sets of limiting mechanisms at the lower end are in a face-to-face structure.

6. A spear shot peening gun guide device according to claim 4, characterized in that, The spear-shaped shot blasting gun is located between the grooves of the guide pulleys of the four sets of limiting mechanisms.

7. A spear shot peening gun guide device according to claim 4, characterized in that, The distance between the grooves of the guide pulleys of the two sets of limiting mechanisms at the upper end of the fixed frame and the distance between the grooves of the guide pulleys of the two sets of limiting mechanisms at the lower end are smaller than the diameter of the spear shot blasting gun.

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