A support for shot blasting and a tooling

Abstract

The application discloses a shot blasting support and tool, and relates to the technical field of surface treatment. The shot blasting support comprises a base, two support shafts are slidably connected to the base, the two support shafts slide in the direction of approaching or moving away from each other, a supporting wheel is rotatably connected to each of the two support shafts, a support gap is formed between the two supporting wheels, and a driving member for driving the support shafts to slide is arranged on the base. The shot blasting support can support columnar workpieces of different sizes and has high applicability.

Description

Technical Field

[0001] This application relates to the field of surface treatment technology, and in particular to a support and tooling for shot peening. Background Technology

[0002] Shot peening is a widely used surface strengthening process in factories. It involves bombarding the surface of a workpiece with shot to implant residual compressive stress, thereby improving the workpiece's fatigue strength. It is widely used to improve the mechanical strength, wear resistance, fatigue resistance, and corrosion resistance of parts.

[0003] Shot peening typically uses steel shot, which is a spherical particle made from special materials through a special heat treatment process. Steel shot can be divided into: steel shot (good toughness, service life several times that of cast iron shot, widely used); cast iron shot (very brittle, easily broken, short service life, not widely used; mainly used in applications requiring high shot peening intensity); and glass shot (mainly used for stainless steel, titanium, aluminum, magnesium, and other materials where iron contamination is not permitted).

[0004] Currently, when performing shot peening on a columnar workpiece, a fixture is needed to support the workpiece. The fixture includes two spaced-apart support members, each configured as a support roller assembly. Each support roller assembly consists of two opposing support rollers connected by bearings, with a support gap between them. One of the support roller assemblies is driven to rotate by a geared motor. In practice, the two sides of the columnar workpiece are placed on the support gap to achieve the supporting action. The geared motor drives the support rollers to rotate, causing the columnar workpiece to rotate as well, thus achieving thorough shot peening of the workpiece's surface.

[0005] The diameter of one end of the cylindrical workpiece is fixed, but the diameter of the other end will change due to actual needs. That is, cylindrical workpieces have different sizes. The support gap of the existing support cannot be changed, and different support needs to be replaced to adapt to the workpiece so that the workpiece axis is horizontal and the rotation can be smooth. In other words, the existing support is not very applicable and there is room for improvement. Summary of the Invention

[0006] To accommodate support for cylindrical workpieces of different sizes, this application provides a support component and tooling for shot peening.

[0007] The shot peening support provided in this application adopts the following technical solution:

[0008] A shot peening support includes a base, on which two support shafts are slidably connected. The two support shafts slide in a direction that approaches or moves away from each other. Each support shaft is rotatably connected to a support wheel, and a support gap is formed between the two support wheels. The base is provided with a drive component for driving the support shafts to slide.

[0009] By adopting the above technical solution, the support shaft is driven to slide by the driving component, so that the two support shafts move in the direction of approaching or moving away from each other. The support roller is rotatably connected to the support shaft. Therefore, the two support rollers move in the direction of approaching or moving away from each other, which realizes the adjustment and change of the support gap. This allows it to be adapted to shot peening operations for columnar workpieces of different sizes, thus helping to improve the adaptability of the support component.

[0010] Preferably, the base is provided with connecting blocks on both sides of each supporting wheel, and each connecting block is provided with a sliding groove. The two ends of the support shaft slide in the two sliding grooves respectively. The driving component is a screw, which is threadedly connected to the connecting block. The length direction of the screw is consistent with the length direction of the sliding groove, and the end of the screw abuts against the support shaft.

[0011] By adopting the above technical solution, the screw is rotated and moves linearly along the sliding groove. Since the end of the screw abuts against the support shaft, the support shaft slides in the sliding groove, thereby adjusting the support gap between the two support rollers.

[0012] Preferably, the sliding groove is open, and the opening of the sliding groove is directed toward the supporting wheel. The sliding groove is inclined and is inclined upward along the direction close to the opposite supporting wheel. The connecting block has a material leakage port on the lower side of the sliding groove, and a material leakage groove is formed on the bottom wall of the sliding groove. The material leakage groove is connected to the material leakage port.

[0013] By adopting the above technical solution, the sliding groove is set with an opening facing the support wheel, so as to connect the two ends of the support shaft with the two sliding grooves. However, since the sliding groove is set with an opening, during the shot peening process, shot and powder may enter the sliding groove and be difficult to clean. By setting the sliding groove to an inclined shape, the operator can tap the entire support component, and the support component will vibrate. During the vibration, the shot and powder will gradually enter the discharge trough and then be discharged from the discharge port, thus cleaning the powder and shot.

[0014] Preferably, a protective plate is sleeved on the support shaft, the protective plate covers the top of the screw, the protective plate has a waist-shaped groove, the length direction of the waist-shaped groove is consistent with the length direction of the screw, and a first bolt is provided on the connecting block, the first bolt passes through the waist-shaped groove and is threadedly connected to the connecting block.

[0015] By adopting the above technical solution, the harsh shot peening environment and the relatively high hardness of the shot (generally HRC 55-62) can easily cause the first bolt to fail if it impacts the thread. The protective plate protects the screw, preventing continuous impact of the shot against the screw's threads during shot peening, thus preventing thread failure. Furthermore, the protective plate is connected to the support shaft via a slotted groove, allowing it to move along with the support shaft as the screw moves, ensuring continuous protection. The protective plate is also connected to the connecting block via the first bolt, providing both support and fixation for the support shaft, thus improving its stability during operation.

[0016] Preferably, the connecting block has a storage groove, the length direction of the storage groove is consistent with the length direction of the screw, a compression spring is provided in the storage groove, one end of the compression spring is connected to the storage groove, and the other end of the compression spring is connected to a shielding plate. The shielding plate is inserted and slidably engaged with the storage groove, and the shielding plate is connected to the protective plate and is used to cover the waist-shaped groove above the screw.

[0017] By adopting the above technical solution, when the screw drives the support shaft to slide, it will drive the protective plate to move together. At this time, under the action of the compression spring, the shielding plate will move into the receiving groove, without affecting the connection between the waist-shaped groove and the connecting block. At the same time, it always shields the waist-shaped groove, preventing the pellets from passing through the waist-shaped groove and colliding with the screw, which helps to improve the service life of the screw.

[0018] Preferably, two mounting plates are spaced apart on the base, and two insertion slots are provided on each of the two mounting plates. The four insertion slots correspond one-to-one with four connecting blocks, and the connecting blocks are inserted into the corresponding insertion slots.

[0019] By adopting the above technical solution, the connecting block and the insertion slot are plugged in to achieve a detachable connection, which makes it easy to disassemble the connecting block, and thus easy to remove the supporting roller, support shaft and other components for maintenance and replacement.

[0020] Preferably, the support wheel is rotatably connected to the support shaft via bearings, and sealing plates are fixedly connected to both sides of the support wheel, with the sealing plates sleeved on the support shaft.

[0021] By adopting the above technical solution, the sealing plates are used to block both sides of the support roller to shield the bearing, which helps to prevent the shot from colliding with the bearing during the shot peening process, causing damage to the bearing and affecting the rotation of the support roller; in addition, it helps to prevent the accumulation of powder particles at the bearing, which would affect the rotation effect of the support roller.

[0022] Preferably, the base is hollowed out and located on the lower side of the two supporting wheels.

[0023] By adopting the above technical solution, the base is located below the supporting roller and is hollowed out. During shot peening, most of the shot and powder will fall out through the hollowed-out area, which helps to prevent the shot and powder from accumulating on the support and being difficult to clean. In practice, a collection basket can be placed under the base to collect the shot and powder, which can then be screened and recycled.

[0024] This application also provides a shot peening tooling with the following technical solution:

[0025] A shot peening fixture includes a frame and a support member. A slide rail is laid on the frame, and the support member is rotatably mounted on the slide rail. A base is also rotatably mounted on the frame. Two fixed wheels are rotatably connected to the base. The rotation axis of the two fixed wheels is aligned with the rotation axis of the support wheel. A support gap is formed between the two fixed wheels. The support gap and the support gap together support the workpiece. A connecting member is provided on the frame for adjusting the distance between the base and the support member.

[0026] By adopting the above technical solution, the fixed wheel supports the end of the workpiece with a constant diameter, while the supporting wheel supports the end with a variable diameter, thus achieving support for cylindrical workpieces. The distance between the supporting components can be adjusted using connecting parts to accommodate workpieces of different lengths, thereby improving the applicability of the tooling.

[0027] Preferably, the connector includes a connecting plate and two sets of second bolts, the two sets of second bolts corresponding to the base and the base respectively, the connecting plate having an adjustment groove, the length direction of the adjustment groove being consistent with the length direction of the slide rail, and the two sets of second bolts passing through the adjustment groove and threadedly connected to the corresponding base and base.

[0028] By adopting the above technical solution, the support component is moved to a suitable position on the slide rail, and then the second bolt is threaded through the adjustment groove and connected to the base and the base to achieve the adjustment and fixation of the distance between the base and the base.

[0029] In summary, this application includes at least one of the following beneficial technical effects:

[0030] 1. Rotate the screw to push the support shaft to slide in the sliding groove, thereby moving the two support rollers and adjusting the size of the support gap to adapt to shot peening operations of columnar workpieces of different sizes.

[0031] 2. The protective plate installed around the screw helps prevent shot from impacting the threads and reducing the service life of the stud. In addition, the protective plate is connected to the support shaft, which supports and fixes the support shaft, helping to improve the stability of the support shaft. Furthermore, as the protective plate moves with the support shaft, the shielding plate will always cover the waist-shaped groove above the screw, thus improving the protection of the screw.

[0032] 3. The sliding trough is set at an angle. When the staff taps the support, the pellets and powder will slide off the trough and fall out of the discharge port due to the vibration, making cleaning easier. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application;

[0034] Figure 2 This is a partial exploded view of Embodiment 1 of this application, mainly showing the structure of the insertion slot;

[0035] Figure 3 This is a partial structural schematic diagram of Embodiment 1 of this application, mainly illustrating the structure of the protective plate;

[0036] Figure 4 This is a cross-sectional view of a connecting block according to an embodiment of this application, mainly showing the structure of the shielding plate and the material leakage trough;

[0037] Figure 5 This is a schematic diagram of the overall structure of Embodiment 2 of this application;

[0038] Figure 6 for Figure 5 The enlarged view of section A mainly shows the structure of the adjusting groove and the second bolt.

[0039] Reference numerals: 1. Base; 11. Mounting plate; 111. Insertion groove; 12. Clearance groove; 2. Support shaft; 21. Supporting wheel; 22. Support gap; 3. Drive component; 31. Screw; 4. Connecting block; 41. Sliding groove; 42. Receiving groove; 43. Material leakage groove; 44. Material leakage port; 5. Protective plate; 51. Waist-shaped groove; 6. First bolt; 7. Compression spring; 8. Shielding plate; 9. Sealing plate; 10. Frame; 20. Base; 30. Slide rail; 40. Connecting component; 401. Connecting plate; 402. Second bolt; 50. Fixed wheel; 501. Support gap; 60. Adjustment groove. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0041] This application discloses a support member for shot peening.

[0042] Reference Figure 1The shot peening support includes a base 1, on which two mounting plates 11 are welded and fixed at intervals. Each mounting plate 11 has an arc-shaped clearance groove 12 formed in the middle to avoid columnar workpieces. Two support shafts 2 are arranged at intervals between the two mounting plates 11. Each support shaft 2 is rotatably connected to a support wheel 21 through a bearing. A support gap 22 for supporting the workpiece is formed between the two support wheels 21. A drive member 3 is provided on the base 1 to drive the support shafts 2 to slide. The two support shafts 2 slide in directions that are closer to or further away from each other.

[0043] The driving component 3 drives the support shaft 2 to slide, causing the two support rollers 21 to move in directions that are closer to or further away from each other, thereby adjusting the support gap 22. This makes it suitable for shot peening operations of cylindrical workpieces of different diameters, and has greater applicability.

[0044] Reference Figure 1 and Figure 2 Each mounting plate 11 has a plug-in groove 111 at the opening on both sides of the clearance groove 12, and the plug-in groove 111 is inclined. The plug-in grooves 111 on the same mounting plate 11 are inclined upward in the direction of mutual approach. A connecting block 4 is inserted into the plug-in groove 111 of the mounting plate 11. That is, the connecting block 4 on the same side of the two mounting plates 11 is located on both sides of the support wheel 21. The length direction of the connecting block 4 is consistent with the length direction of the plug-in groove 111. That is, the connecting block 4 is inclined upward in the direction of approaching the opposite support wheel 21. A sliding groove 41 is opened on the connecting block 4. The length direction of the sliding groove 41 is consistent with the length direction of the connecting block 4. The sliding groove 41 is open and faces the support wheel 21. The two ends of the support shaft 2 are square. The two ends of the support shaft 2 are slidably connected in the corresponding two sliding grooves 41.

[0045] The driving component 3 is a screw 31, which is threadedly connected to the connecting block 4. The end of the screw 31 extends into the sliding groove 41 and abuts against the support shaft 2. The length direction of the screw 31 is consistent with the length direction of the sliding groove 41. Rotating the screw 31 pushes the support shaft 2 to move within the sliding groove 41, causing the two support rollers 21 to move in directions that are closer to each other and further apart, thereby adjusting the support gap 22.

[0046] Reference Figure 2 and Figure 3 A protective plate 5 is provided on the connecting block 4. The protective plate 5 is sleeved and fitted with the support shaft 2, and the protective plate 5 covers the periphery of the screw 31. A waist-shaped groove 51 is provided on the protective plate 5. The length direction of the waist-shaped groove 51 is consistent with the length direction of the screw 31. A first bolt 6 is provided on the connecting block 4. The first bolt 6 passes through the waist-shaped groove 51 and is threadedly connected to the connecting block 4.

[0047] The protective plate 5 protects the screw 31, helping to prevent shot from colliding with it during shot peening and causing thread failure. Furthermore, as the screw 31 rotates on the connecting block 4, the distance at which it is exposed outside the block changes. Loosening the first bolt 6 at this time causes the protective plate 5 to move with the support shaft 2, thus synchronously covering the screw 31 and enhancing its protection. When fixed to the connecting block 4, the protective plate 5 also provides support and fixation to the support shaft 2, improving its stability.

[0048] Reference Figure 3 and Figure 4 Although the protective plate 5 covers the periphery of the screw 31, due to the waist-shaped groove 51, the pellets will pass through the waist-shaped groove 51 and come into contact with the screw 31, causing the screw 31 to fail over time. In order to further improve the protection effect of the screw 31, a storage groove 42 is provided on the connecting block 4. The length direction of the storage groove 42 is consistent with the length direction of the screw 31. A compression spring 7 is fixedly connected in the storage groove 42. One end of the compression spring 7 is connected to the bottom wall of the storage groove 42, and the other end of the compression spring 7 is fixedly connected to a shielding plate 8. The shielding plate 8 is inserted and slidably engaged with the storage groove 42. The side of the shielding plate 8 away from the compression spring 7 is connected to the protective plate 5, and the connection point is located on the lower side of the waist-shaped groove 51. The shielding plate 8 is located below the protective plate 5. When the protective plate 5 moves, the shielding plate 8 will move accordingly, always shielding the waist-shaped groove 51, and will not affect the fit between the first bolt 6 and the waist-shaped groove 51 and the connecting block 4. That is, the addition of the shielding plate 8 helps to further improve the protection effect on the screw 31.

[0049] A material leakage trough 43 is provided on the bottom wall of the connecting block 4 located on the sliding groove 41. The length direction of the material leakage trough 43 is consistent with the length direction of the sliding groove 41. A material leakage port 44 is provided on the lower side of the connecting block 4 located on the sliding groove 41, and the material leakage port 44 is connected to the material leakage trough 43. During shot blasting, shot and powder particles will enter the sliding groove 41 and are difficult to clean. The sliding groove 41 is inclined. When the operator taps the support, the support will vibrate as a whole. During the vibration, the shot and powder particles will enter the material leakage trough 43 and then be discharged from the material leakage port 44 along the inclined direction, realizing quick cleaning of shot and powder particles. In addition, the base 1 is hollowed out between the two mounting plates 11, and a collection basket can be placed below to collect shot and powder particles for subsequent screening and recycling.

[0050] Reference Figure 3The support shaft 2 is fitted with sealing plates 9 on both sides of the support roller 21. The sealing plates 9 are bolted to the support roller 21 to seal the bearing on the support shaft 2. This helps to prevent the shot from colliding with the bearing, affecting the service life of the bearing, and thus affecting the rotation effect of the support roller 21. It also helps to prevent the powder from accumulating inside and affecting the rotation effect of the support roller 21.

[0051] The implementation principle of a shot peening support in this embodiment is as follows: Rotating all screws 31 causes the ends of the screws 31 to push the support shaft 2 in a linear motion within the sliding groove 41, thereby driving the two support rollers 21 to move in directions closer or further apart, thus adjusting the support gap 22. This allows for shot peening operations on cylindrical workpieces of different diameters. During this process, the protective plate 5 protects the screws 31, helping to prevent shot from impacting them and causing thread failure. Additionally, the shielding plate 8 shields the waist-shaped groove 51, further enhancing the protection of the screws 31. Furthermore, the cooperation of the discharge trough 43 and discharge port 44 allows shot and powder particles to enter the discharge trough 43 and exit from the discharge port 44 due to vibration when the support is struck, facilitating cleaning.

[0052] Reference Figure 5 and Figure 6 This application also discloses a shot peening fixture, including a frame 10. The aforementioned support member is rotatably mounted on the frame 10. A base 20 is also rotatably connected to the frame 10. Track wheels are mounted on the lower sides of both the base 20 and the base 1. Two slide rails 30 are laid on the frame 10, and the track wheels rotatably engage with the slide rails 30. An adjustable distance connector 40 is provided between the base 20 and the base 1. Two fixed wheels 50 are symmetrically rotatably connected to the base 20. The rotation axes of the two fixed wheels 50 are parallel to the rotation axis of the supporting wheel 21, and a supporting gap 501 is formed between the two fixed wheels 50. The supporting gap 501 cooperates with the support gap 22 to support the workpiece. The fixed wheels 50 are driven to rotate by a reduction motor.

[0053] The connector 40 includes a connecting plate 401 and two sets of second bolts 402. The connecting plate 401 has an adjustment groove 60, which is waist-shaped. The length direction of the adjustment groove 60 is consistent with the length direction of the slide rail 30. Each set of second bolts 402 includes two second bolts 402. One side of the connecting plate 401 is fixedly connected to the base 1 through the adjustment groove 60 by one set of second bolts 402. The other side of the connecting plate 401 is threadedly connected to the base 20 through the adjustment groove 60 by the other set of second bolts 402.

[0054] The implementation principle of a shot peening fixture in this application embodiment is as follows: the sliding of the base 20 and the base 1 is achieved by utilizing the rolling cooperation between the track wheel and the slide rail 30, and the distance between the two is adjusted. Then, the second bolt 402 is used to pass through the adjustment groove 60 and connect to the base 1 and the base 20, so that the relative fixation between the two can be achieved, and then the workpiece can be supported. This fixture can be adapted to shot peening operations of workpieces with different diameters and workpieces with different lengths by using the support component, that is, the fixture has strong applicability.

[0055] In addition, since the length of the connecting plate 401 is limited, if the length of the workpiece is greater than that of the connecting plate 401, a support can be added to the frame 10. The two support pieces are connected by the connector 40, which can realize the change of the support length and adapt to shot peening operations of workpieces of various sizes.

[0056] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A support member for shot peening, characterized in that: Includes a base (1), on which two support shafts (2) are slidably connected. The two support shafts (2) slide in a direction that approaches or moves away from each other. Each support shaft (2) is rotatably connected to a support wheel (21), and a support gap (22) is formed between the two support wheels (21). The base (1) is provided with a driving member (3) for driving the support shafts (2) to slide. The base (1) is provided with connecting blocks (4) on both sides of any supporting wheel (21). Each of the two connecting blocks (4) is provided with a sliding groove (41). The two ends of the support shaft (2) slide in the two sliding grooves (41) respectively. The driving component (3) is set as a screw (31). The screw (31) is threadedly connected to the connecting block (4), and the length direction of the screw (31) is consistent with the length direction of the sliding groove (41). The end of the screw (31) abuts against the support shaft (2). The sliding groove (41) is open, and the openings of the sliding groove (41) are all facing the support wheel (21). The sliding groove (41) is inclined and is inclined upward along the direction close to the opposite support wheel (21). The connecting block (4) is provided with a material leakage port (44) on the lower side of the sliding groove (41). A material leakage groove (43) is provided on the bottom wall of the sliding groove (41). The material leakage groove (43) is connected to the material leakage port (44). A protective plate (5) is fitted on the support shaft (2), and the protective plate (5) covers the screw (31). A waist-shaped groove (51) is opened on the protective plate (5), and the length direction of the waist-shaped groove (51) is consistent with the length direction of the screw (31). A first bolt (6) is provided on the connecting block (4), and the first bolt (6) passes through the waist-shaped groove (51) and is threadedly connected to the connecting block (4).

2. The shot peening support according to claim 1, characterized in that: The connecting block (4) has a storage groove (42) with the length direction of the storage groove (42) being consistent with the length direction of the screw (31). A compression spring (7) is provided in the storage groove (42). One end of the compression spring (7) is connected to the storage groove (42), and the other end of the compression spring (7) is connected to a shielding plate (8). The shielding plate (8) is inserted into and slides into the storage groove (42). The shielding plate (8) is connected to the protective plate (5) and is used to cover the waist-shaped groove (51) above the screw (31).

3. A shot peening support according to claim 1, characterized in that: Two mounting plates (11) are spaced apart on the base (1). Each mounting plate (11) has two insertion slots (111). The four insertion slots (111) correspond one-to-one with the four connecting blocks (4). The connecting blocks (4) are inserted into the corresponding insertion slots (111).

4. A shot peening support according to claim 1, characterized in that: The support wheel (21) is rotatably connected to the support shaft (2) via bearings. Both sides of the support wheel (21) are fixedly connected to the sealing plate (9), which is sleeved on the support shaft (2).

5. A shot peening support according to claim 1, characterized in that: The base (1) is located on the lower side of the two supporting wheels (21) and is hollowed out.

6. A tooling for shot peening, characterized in that: The device includes a frame (10) and a support member as described in any one of claims 1-5. A slide rail (30) is laid on the frame (10), and the support member is rotatably mounted on the slide rail (30). A base (20) is also rotatably mounted on the frame (10). Two fixed wheels (50) are rotatably connected to the base (20). The rotation axis of the two fixed wheels (50) is consistent with the rotation axis of the supporting wheel (21). A support gap (501) is formed between the two fixed wheels (50). The support gap (501) and the support gap (22) together support the workpiece. A connector (40) for adjusting the distance between the base (1) and the base (20) is provided on the frame (10).

7. A shot peening fixture according to claim 6, characterized in that: The connector (40) includes a connecting plate (401) and two sets of second bolts (402). The two sets of second bolts (402) correspond to the base (1) and the base (20) respectively. An adjustment groove (60) is provided on the connecting plate (401). The length direction of the adjustment groove (60) is consistent with the length direction of the slide rail (30). The two sets of second bolts (402) pass through the adjustment groove (60) and are threadedly connected to the corresponding base (1) and base (20) respectively.

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