A tool for impeller refurbishment

Abstract

The utility model discloses a tool for impeller finishing, including frock seat, the frock seat is provided with the clamping sleeve, and the steady cover is set up in the clamping sleeve periphery, and the pull rod is slidably arranged in the frock seat and is slidably connected with the clamping sleeve, the driving arrangement is set up in the clamping sleeve one side, and its working end is connected with the pull rod, and the locking device is adjustably set up in the pull rod one end, and a plurality of anti -vibration devices are equidistantly set up in the frock seat around the steady cover outside and are respectively contacted with the impeller, the utility model discloses the pull rod movement is driven by the driving arrangement, and the impeller is radially self -centering and clamped by the driving clamping sleeve, and the locking device is driven by the pull rod and moves along the impeller axial movement, and the steady cover is cooperated and clamps the impeller axial, and through radial and axial clamping, avoid the position change when the impeller secondary clamping, cause the problem of poor machining accuracy, through a plurality of anti -vibration devices to support the impeller bottom surface multiple point position, prevent the machining process and cause the machining grain uneven, the size deviation problem of the impeller because of vibration.

Description

Technical Field

[0001] This utility model relates to the field of impeller processing technology, and in particular to a tooling for impeller overhaul. Background Technology

[0002] Tooling refers to the general term for various tools used in the manufacturing process, including cutting tools, fixtures, molds, workstations, etc. Tooling is a general abbreviation. Some tooling is a process device used to quickly fasten workpieces during machining, so as to keep the machine tool, cutting tool and workpiece in the correct relative position. It is also called tooling fixture. Tooling fixture is an indispensable part of machining.

[0003] During the production process, the impeller blades require secondary processing, such as precision machining and polishing. However, since the initial process has already been completed, the traditional secondary finishing method is difficult to clamp and position. Furthermore, due to the two impeller installations, the clamping position of the impeller may change, resulting in poor machining accuracy. In addition, during the machining process on the machine tool, the impeller is prone to radial displacement due to vibration, leading to uneven machining texture and dimensional deviations. Utility Model Content

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a tooling for impeller overhaul, thereby solving the problems mentioned in the background section. To achieve this objective, the present invention adopts the following technical solution: The tooling for impeller overhaul includes a tooling base, on which a clamping sleeve is provided, and further includes: A stabilizing sleeve is disposed on the tooling base surrounding the jacket; A pull rod is inserted through and slidably disposed within the tooling base, and is slidably connected to the clamping sleeve, for controlling the clamping sleeve; A drive device is located on the side of the tooling base away from the clamp, and its working end is connected to the pull rod. A locking device is adjustablely located at the end of the pull rod away from the drive device, and is used to cooperate with the stabilizing sleeve to clamp the impeller; Multiple vibration damping devices are equidistantly arranged in the tooling base around the outside of the stabilizing sleeve, and respectively abut against the impeller.

[0005] Optionally, the vibration damping device includes a first slider, a second slider, a push rod, and an adjusting bolt. The first slider is slidably disposed within the tooling seat along the radial direction of the stabilizing sleeve and is provided with a first inclined surface. The second slider is slidably disposed within the tooling seat along the axial direction of the stabilizing sleeve and is provided with a second inclined surface. The first inclined surface and the second inclined surface are slidably connected. The push rod is disposed on the second slider, and its end extends to the outside of the tooling seat. The adjusting bolt is rotatably disposed on one side of the tooling seat and is threadedly connected to the first slider.

[0006] Optionally, a T-shaped platform is provided on the first inclined surface, and a T-shaped groove is provided on the second inclined surface, wherein the T-shaped platform and the T-shaped groove are matched and slidably connected.

[0007] Optionally, a vibration damping block is provided at the end of the top rod.

[0008] Optionally, the locking device includes a locking bolt and a washer, the locking bolt and the pull rod are threaded together, and the washer is sleeved on the locking bolt.

[0009] Optionally, the pull rod includes a sliding part, a driving part, and a docking part. A through hole is provided in the middle of the tooling base. The sliding part passes through the through hole and is slidably connected to the through hole. The driving part is located at one end of the sliding part and is slidably connected to the clamp. The docking part is located at the end of the driving part away from the sliding part and is detachably connected to the locking device.

[0010] Optionally, a guide portion is provided at the end of the docking portion.

[0011] Optionally, a positioning groove is provided on the periphery of the sliding part along its axial direction, and a positioning pin is provided on one side of the tooling base, the positioning pin being slidably connected to the positioning groove.

[0012] Optionally, the driving device includes a support base and a driving cylinder. The support base is disposed on the tooling seat on the side away from the clamp, and the driving cylinder is disposed on the support base, with its working end connected to the pull rod.

[0013] Optionally, the stabilizing sleeve has end face teeth at one end near the locking device. Compared to existing technologies, the advantages of this invention are that, by using the above-mentioned solution, the drive device drives the pull rod to move, which drives the clamping sleeve to radially self-center and clamp the impeller. The pull rod drives the locking device to move along the impeller axis, which, together with the stabilizing sleeve, clamps the impeller axially. Through radial and axial clamping, the position of the impeller changes during secondary clamping, thus avoiding the problem of poor machining accuracy. Multiple anti-vibration devices support multiple points on the bottom surface of the impeller, preventing uneven machining textures and dimensional deviations caused by impeller vibration during machining. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall exploded structure of this utility model; Figure 3 This is a schematic diagram of the vibration damping device of this utility model; Figure 4 This is a schematic diagram of the tie rod structure of this utility model; Figure 5 This is a schematic diagram of the stabilizing sleeve structure of this utility model; Explanation of reference numerals in the attached drawings: 1. Tooling base; 2. Clamping sleeve; 3. Stabilizing sleeve; 4. Tie rod; 5. Drive device; 6. Locking device; 7. Vibration damping device; 11. Through hole; 71. First slider; 72. Second slider; 73. Top rod; 74. Adjusting bolt; 711. First inclined plane; 721. Second inclined plane; 712. T-shaped platform; 722. T-slot; 75. Vibration damping block; 61. Locking bolt; 62. Shim; 41. Sliding part; 42. Drive part; 43. Connecting part; 431. Guide part; 411. Positioning groove; 12. Positioning pin; 51. Support base; 52. Drive cylinder; 31. End face tooth. Detailed Implementation

[0015] To facilitate understanding of this application, a more detailed description of the application is provided below with reference to the accompanying drawings and specific embodiments; preferred embodiments of the application are shown in the drawings; however, the application may be implemented in many different forms and is not limited to the embodiments described in this specification; rather, these embodiments are provided to enable a more thorough and complete understanding of the disclosure of this application.

[0016] It should be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. In the embodiments shown in the accompanying drawings, directional indications (such as up, down, left, right, front, and back) are used to explain the structure and movement of various components and are not absolute but relative. These descriptions are appropriate when these components are in the positions shown in the drawings. If the descriptions of the positions of these components change, these directional indications also change accordingly.

[0017] It should also be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence; it should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in a sequence other than those illustrated or described herein.

[0018] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit this application.

[0019] like Figures 1-2 As shown, one embodiment of this utility model is a tooling for impeller overhaul, comprising a tooling base 1, which is cylindrical, and a sleeve 2 is provided at the center of the top surface of the tooling base 1. The stabilizing sleeve 3 is mounted on the tooling seat 1 on the periphery of the jacket 2; The tie rod 4 is vertically inserted and slidably disposed in the tooling seat 1, and is slidably connected to the sleeve 2, for controlling the radial expansion and contraction of the sleeve 2; The drive device 5 is located at the bottom of the tooling base 1, and its working end is connected to the bottom of the pull rod 4; The locking device 6 is adjustablely located at the top of the pull rod 4 and is used to clamp the impeller in conjunction with the stabilizing sleeve 3; Multiple vibration damping devices 7 are equidistantly arranged in the tooling seat 1 around the outer circumference of the stabilizing sleeve 3, and respectively abut against the impeller.

[0020] In use, the impeller is placed on the stabilizing sleeve 3, with the central shaft hole in the middle of the impeller fitted around the outer edge of the clamping sleeve 2. The locking device 6 is installed on the top of the pull rod 4, and the driving device 5 drives the pull rod 4 to move downward. The clamping sleeve 2 clamps the impeller from inside the central shaft hole. At this time, the central shaft hole is coaxial with the pull rod 4, ensuring that the center position of the impeller is fixed each time it is clamped. Then, the height of the locking device 6 is adjusted to cooperate with the stabilizing sleeve 3 to clamp the impeller axially. Then, the height of the multiple anti-vibration devices 7 is adjusted so that the tops of the multiple anti-vibration devices 7 abut against the impeller respectively, for vibration prevention during processing.

[0021] This application uses a drive device 5 to move a pull rod 4, which in turn drives a clamping sleeve 2 to radially self-center and clamp the impeller. The pull rod 4 drives a locking device 6 to move along the impeller axis, which, together with a stabilizing sleeve 3, clamps the impeller axially. Through radial and axial clamping, the position of the impeller changes during secondary clamping, thus avoiding the problem of poor machining accuracy. Multiple anti-vibration devices 7 support multiple points on the bottom surface of the impeller, preventing uneven machining textures and dimensional deviations caused by impeller vibration during machining.

[0022] In one embodiment, such as Figure 3 As shown, the vibration damping device 7 includes a first slider 71, a second slider 72, a push rod 73, and an adjusting bolt 74. The first slider 71 is slidably disposed in the fixture 1 along the radial direction of the stabilizing sleeve 3 and is provided with a first inclined surface 711. The second slider 72 is slidably disposed in the fixture 1 along the axial direction of the stabilizing sleeve 3 and is provided with a second inclined surface 721. The first inclined surface 711 and the second inclined surface 721 are slidably connected. The push rod 73 is disposed on the second slider 72 and its end extends to the outside of the fixture 1. The adjusting bolt 74 is rotatably disposed on one side of the fixture 1 and is threadedly connected to the first slider 71.

[0023] Specifically, three or four L-shaped mounting slots are equidistantly opened along the outer side of the stabilizing sleeve 3 in the circumferential direction of the fixture base 1. Each mounting slot is equipped with a vibration damping device 7. The mounting slot is divided into a radial section and an axial section, which correspond to the installation of the first slider 71 and the second slider 72, respectively. The first slider 71 is horizontally slidably set in the radial section. A first inclined surface 711 is set on the side facing the second slider 72. An internal threaded hole matching the adjusting bolt 74 is set on the outer end of the first slider 71. The second slider 72 is vertically slidably set in the axial section. A second inclined surface 721 that fits with the first inclined surface 711 is machined on the side facing the first slider 71. A cylindrical push rod 73 is vertically set at the top of the second slider 72. A channel is opened at the top of the mounting slot. The diameter of the push rod 73 matches the channel and is slidably connected. The top of the push rod 73 extends to the outer side of the fixture base 1. An adjusting hole is opened on the side wall of the fixture base 1. The head of the adjusting bolt 74 is rotatably set in the adjusting hole. One end of the bolt is threadedly connected to the internal threaded hole of the first slider 71.

[0024] By rotating the adjusting bolt 74, the first slider 71 is driven to slide along the radial section of the mounting groove. The first slider 71 is pushed by the first inclined surface 711 to move along the axial section in the mounting groove, thereby driving the push rod 73 to move vertically. It adapts to the impeller bottom surface with different thicknesses and contours, forming abutment support from multiple points on the impeller bottom surface, directly acting on the impeller's easily vibrating area. When the second slider 72 moves upward, it relies on the thrust of the first slider 71, and when it moves downward, it relies on the gravity of the gear. When the push rod 73 abuts against the impeller, it can further restrict the radial movement of the impeller. It clamps with the center of the sleeve 2 to form a dual positioning of the center and the outer periphery. Through the support of the impeller by the push rod 73, the high-frequency vibration of the impeller during precision machining and polishing is reduced, avoiding problems such as uneven machining texture and dimensional deviation caused by vibration.

[0025] In one embodiment, such as Figure 3 As shown, a T-shaped platform 712 is provided on the first inclined surface 711, and a T-shaped groove 722 is provided on the second inclined surface 721. The T-shaped platform 712 and the T-shaped groove 722 are matched and slidably connected.

[0026] Specifically, a T-shaped platform with a T-shaped cross-section is machined on the first inclined surface 711 of the first slider 71 along the length of the inclined surface; a T-shaped groove with an inverted T-shaped cross-section is correspondingly machined on the second inclined surface 721 of the second slider 72. The width and depth of the T-shaped groove are perfectly matched with the dimensions of the T-shaped platform, and the length of the groove is consistent with the second inclined surface 721. During assembly, the T-shaped platform of the first slider 71 is embedded into the T-shaped groove of the second slider 72, so that the two can slide smoothly along the inclined surface. Through the engagement of the T-shaped platform and the T-shaped groove, the two are prevented from separating laterally due to force, such as the reaction force of the push rod 73 against the impeller, during the sliding process on the inclined surface. Furthermore, when adjusting the first slider 71 to move outward, the second slider 72 and the push rod 73 can be ensured to move downward without the pressure of the impeller's gravity on the top of the push rod 73. In one embodiment, such as Figure 3 As shown, a vibration damping block 75 is provided at the end of the push rod 73. The vibration damping block 75 is made of elastic material, such as polyurethane or nitrile rubber. The vibration damping block 75, made of elastic material, absorbs the impact vibration between the impeller and the push rod 73 during processing, avoids vibration amplification caused by rigid contact, and improves the vibration resistance.

[0027] In one embodiment, such as Figure 2 As shown, the locking device 6 includes a locking bolt 61 and a washer 62. The locking bolt 61 is threadedly connected to the pull rod 4, and the washer 62 is sleeved on the locking bolt 61.

[0028] Specifically, an internal threaded hole can be opened at the top of the tie rod 4, and the locking bolt 61 is threadedly connected to the internal threaded hole. In this embodiment, an external thread is provided at the top of the tie rod 4, and an internal threaded hole is provided at the bottom of the locking bolt 61. By rotating the locking bolt 61, the distance between the shim 62 and the stabilizing sleeve 3 can be adjusted to accommodate impellers with different axial heights. In one embodiment, such as Figure 4 As shown, the pull rod 4 includes a sliding part 41, a driving part 42, and a docking part 43. A through hole 11 is provided through the middle of the tooling base 1. The sliding part 41 is located in the lower section of the pull rod 4 body. The sliding part 41 passes through the through hole 11 and is slidably connected to the through hole 11. The driving part 42 is provided at the top of the sliding part 41. It has a conical structure and is slidably connected to the sleeve 2. The conical surface is in contact with the inner wall of the sleeve 2. The sleeve 2 is a radially retractable elastic sleeve with a conical inner wall. The docking part 43 is provided at the top of the driving part 42 and is detachably connected to the locking device 6.

[0029] The axial movement of the sliding part 41 drives the drive part 42 to move up and down. By utilizing the cooperation between the conical surface and the inner wall of the sleeve 2, the axial force is converted into the radial expansion or contraction force of the sleeve 2, thereby achieving the clamping or loosening of the impeller center shaft hole. This ensures that while clamping the impeller, the sleeve 2 and the impeller center shaft hole are coaxial, thus solving the problem of impeller center offset during secondary clamping.

[0030] In one embodiment, such as Figure 4 As shown, the end of the mating part 43 is provided with a guide part 431. The guide part 431 is hemispherical, and the diameter of the hemisphere is the same as the diameter of the bottom end of the guide part 431. When the locking bolt 61 is installed, the hemispherical surface of the guide part 431 can be inserted into the internal thread hole of the locking bolt 61 first. Even if there is a slight coaxiality deviation between the bolt and the mating part 43, the conical surface can adjust the bolt position through self-centering action, so that the internal thread of the bolt is precisely aligned with the external thread of the mating part 43, thereby improving the clamping efficiency and avoiding damage caused by thread collision.

[0031] In one embodiment, such as Figure 4 As shown, a positioning groove 411 is provided on the circumference of the sliding part 41 along its axial direction, and a positioning pin 12 is provided on one side of the tooling base 1. The positioning pin 12 is slidably connected to the positioning groove 411.

[0032] Specifically, a positioning groove 411 is provided axially around the sliding part 41 of the pull rod 4. The length of the positioning groove 411 matches the axial stroke of the sliding part 41. A threaded hole matching the positioning pin 12 is provided radially on the side wall of the tooling base 1. The positioning pin 12 is threadedly connected to the threaded hole of the tooling base 1, and one end of the positioning pin 12 extends into the positioning groove 411. The inner end of the positioning pin 12 is slidably connected to the positioning groove 411 to ensure that the positioning pin 12 can slide smoothly along the positioning groove 411. The cross-section of the positioning groove 411 is arc-shaped, and the inner end of the positioning pin 12 is hemispherical. The two match each other. The cooperation between the positioning pin 12 and the positioning groove 411 can prevent the pull rod 4 from rotating around its own axis, ensuring that the pull rod 4 can only slide up and down axially.

[0033] In one embodiment, such as Figure 2 As shown, the drive device 5 includes a support base 51 and a drive cylinder 52. The support base 51 is located at the bottom of the tooling base 1, and the drive cylinder 52 is located at the bottom of the support base 51. Its working end passes through the support base 51 and is connected to the pull rod 4. The drive cylinder 52 drives the pull rod 4 to move vertically, thereby causing the jacket 2 to expand or contract, radially clamping the impeller. The pull rod 4 also drives the locking device 6 to move, axially clamping the impeller.

[0034] In one embodiment, such as Figure 5 As shown, the stabilizing sleeve 3 has an end face tooth 31 near the locking device 6.

[0035] Specifically, at the top of the stabilizing sleeve 3, that is, the end face that contacts the bottom surface of the impeller, a ring of distributed end face teeth 31 is set to increase the friction between the stabilizing sleeve 3 and the impeller, preventing the impeller from rotating around the central axis during the processing.

[0036] It should be noted that the above-mentioned technical features can be combined with each other to form various embodiments not listed above, all of which are considered to be within the scope of this utility model specification; and, for those skilled in the art, improvements or modifications can be made based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims of this utility model.

Claims

1. A tooling for impeller overhaul, comprising a tooling base, wherein a clamping sleeve is provided on the tooling base, characterized in that, Also includes: A stabilizing sleeve is disposed on the tooling base surrounding the jacket; A pull rod is inserted through and slidably disposed within the tooling base, and is slidably connected to the clamping sleeve, for controlling the clamping sleeve; A drive device is located on the side of the tooling base away from the clamp, and its working end is connected to the pull rod. A locking device is adjustablely located at the end of the pull rod away from the drive device, and is used to cooperate with the stabilizing sleeve to clamp the impeller; Multiple vibration damping devices are equidistantly arranged in the tooling base around the outside of the stabilizing sleeve, and respectively abut against the impeller.

2. The tooling for impeller overhaul according to claim 1, characterized in that, The vibration damping device includes a first slider, a second slider, a push rod, and an adjusting bolt. The first slider is slidably disposed within the fixture seat along the radial direction of the stabilizing sleeve and is provided with a first inclined surface. The second slider is slidably disposed within the fixture seat along the axial direction of the stabilizing sleeve and is provided with a second inclined surface. The first inclined surface and the second inclined surface are slidably connected. The push rod is disposed on the second slider and its end extends to the outside of the fixture seat. The adjusting bolt is rotatably disposed on one side of the fixture seat and is threadedly connected to the first slider.

3. The tooling for impeller overhaul according to claim 2, characterized in that, A T-shaped platform is provided on the first inclined surface, and a T-shaped groove is provided on the second inclined surface. The T-shaped platform and the T-shaped groove are matched and slidably connected.

4. The tooling for impeller overhaul according to claim 2, characterized in that, The top rod is equipped with a vibration damping block at its end.

5. The tooling for impeller overhaul according to claim 1, characterized in that, The locking device includes a locking bolt and a washer. The locking bolt is threadedly connected to the pull rod, and the washer is sleeved on the locking bolt.

6. The tooling for impeller overhaul according to claim 1, characterized in that, The pull rod includes a sliding part, a driving part, and a docking part. A through hole is provided in the middle of the tooling base. The sliding part passes through the through hole and is slidably connected to the through hole. The driving part is located at one end of the sliding part and is slidably connected to the clamp. The docking part is located at the end of the driving part away from the sliding part and is detachably connected to the locking device.

7. The tooling for impeller overhaul according to claim 6, characterized in that, A guide portion is provided at the end of the docking part.

8. The tooling for impeller overhaul according to claim 6, characterized in that, The sliding part has a positioning groove along its axial direction, and the tooling base has a positioning pin on one side, which is slidably connected to the positioning groove.

9. The tooling for impeller overhaul according to claim 1, characterized in that, The driving device includes a support base and a driving cylinder. The support base is disposed on the tooling seat on the side away from the clamping sleeve, and the driving cylinder is disposed on the support base, with its working end connected to the pull rod.

10. The tooling for impeller overhaul according to claim 1, characterized in that, The stabilizing sleeve has end face teeth at one end near the locking device.

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