Generator shell machining centering device

Abstract

The invention discloses a generator shell machining centering device, and relates to the technical field of generator shell machining, the generator shell machining centering device comprises a base and a centering clamping assembly, the rear end of the base is provided with the centering clamping assembly, the centering clamping assembly comprises a mounting plate fixed to the rear end of the base through bolts, and rotating pins are fixedly mounted on the two sides of the top end of the mounting plate; a rocker arm is rotationally installed in the rotating pin, and a V-shaped block is fixedly installed at the bottom of the tail end of the rocker arm. According to the polishing device, the other face, with the large inclination, of the double-face pin is linked with the cavity polishing assembly, and when the spigot end face of the generator shell body is polished by the polishing abrasive belt, the double-face pin at the telescopic end of the air cylinder synchronously drives the polishing wheel to stretch into an inner bearing chamber of the generator shell body in a transmission mode; according to the device, only one air cylinder is needed for providing power, three production procedures of centering clamping of the outer circle of the generator shell body, polishing of the spigot end face and polishing of the bearing chamber can be continuously executed, and the production efficiency is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of generator housing processing, and specifically relates to a centering device for generator housing processing. Background Art

[0002] According to the structural requirements and working characteristics of the generator, the mating stop surface and the internal bearing chamber of the generator housing with the machine base must be precisely polished. The reason is that the dimensional accuracy and cylindricity of the end stop surface mating with the machine base directly affect the air gap uniformity between the stator and rotor, thereby affecting the motor efficiency and electromagnetic noise. The dimensional tolerance and form and position accuracy of the bearing chamber determine the bearing assembly quality, which is a key process to ensure the performance and safe operation of the generator.

[0003] In the traditional process, first, a high-speed rotating grinding wheel is used to polish the stop surface of the generator housing, and then an internal hole grinding machine is used to polish the bearing chamber of the generator housing. This makes the polishing of the stop surface and the bearing chamber of the generator housing need to be completed on two devices. The production efficiency is low, and the polishing consistency depends on the operation experience of the workers, resulting in unstable polishing quality. Summary of the Invention

[0004] The purpose of the present invention is to provide a centering device for generator housing processing to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A centering device for generator housing processing, including a base and a centering clamping assembly. The centering clamping assembly is arranged at the rear end of the base. The centering clamping assembly includes a mounting plate bolted to the rear end of the base. At both sides of the top end of the mounting plate, rotating pins are fixedly installed, and a rocker arm is rotatably installed inside the rotating pins. At the bottom of the end of the rocker arm, a V-shaped block is fixedly installed. In the middle of the mounting plate, a cylinder is bolted, and the telescopic end of the cylinder is fixedly connected with a telescopic rod. In the middle of the telescopic rod, a pressing block is coaxially fixed. The strip groove above the pressing block is in abutting fit with the inclined surface of the "Z"-shaped structure of the rocker arm, and at the end of the telescopic rod, a double-sided pin is coaxially fixed.

[0006] Furthermore, a V-shaped seat is integrally fixed at the front end of the base, and a generator housing body is placed inside the V-shaped seat. The outer circle of the generator housing body is supported by the inner inclined surfaces of the V-shaped seat and the V-shaped block to achieve radial automatic centering.

[0007] Furthermore, a through hole is formed through the middle of the V-shaped seat, and driven members are symmetrically and slidably installed on both sides of the middle of the through hole.

[0008] Furthermore, one of the driven members is in contact with the surface with a smaller slope of the double-sided pin, and the other driven member is in contact with the surface with a larger slope of the double-sided pin.

[0009] Furthermore, a stop grinding assembly is provided on one side of the V-shaped seat, and the stop grinding assembly includes a right pin body fixedly installed on one side of the V-shaped seat, a connecting rod is rotatably installed inside the recess of the right pin body, and the inner side of the connecting rod is fitted with the side of the double-sided pin with a smaller inclination through a follower.

[0010] Furthermore, the stop grinding assembly also includes a sliding seat rotatably connected to the top end of the connecting rod, the sliding seat slidingly cooperates with the step groove on the adjacent side of the V-shaped seat, and the rear end bolt of the sliding seat is fixed with a sanding belt motor.

[0011] Furthermore, the stop grinding assembly also includes a grinding belt wheel fixedly connected to the rotating end of the grinding belt motor, the outer cover of the grinding belt wheel is provided with a grinding belt, and the driving end grinding belt wheel is rotated by the grinding belt and the driven end grinding belt wheels on both sides of the front end, and the outer grinding surface of the grinding belt is in contact with the stop end of the generator casing body.

[0012] Furthermore, a chamber grinding assembly is provided on the other side of the V-shaped seat, and the chamber grinding assembly includes a left pin body fixedly installed on the other side of the V-shaped seat, a fork arm is rotatably installed inside the recess of the left pin body, and the inner side of the fork arm is fitted with the other side of the double-sided pin with a larger inclination through a follower.

[0013] Furthermore, the chamber grinding assembly also includes a tension spring connected to the bottom end of the fork arm, the fork arm is elastically connected to the connecting rod through the tension spring, and the top end of the fork arm is rotatably connected to a slip ring.

[0014] Furthermore, the chamber grinding assembly also includes a grinding wheel rotatably connected to the end of the slip ring, the internal keyway of the grinding wheel is radially matched with a key shaft, and the key shaft is fixedly connected to the rotating end of the rotating motor.

[0015] The present invention provides a generator casing machining centering device, which has the following beneficial effects: 1. When the present application is in use, by linking the centering clamping assembly at the initial stage of the telescopic rod's stroke, the generator casing body to be processed can be center-clamped through symmetrical double V-shaped angles, so that it can remain stable during the subsequent grinding process of the stop end face and the bearing chamber, thereby improving the grinding quality.

[0016] 2. When the present application is in use, the present application links the side with the smaller inclination of the double-sided pin with the stop grinding assembly, and can continuously perform the grinding process on the stop end face after the generator casing body is clamped by the double V-angle centering. The movement of the grinding belt on the sliding seat when it is close to the stop end face is driven by the double-sided pin at the telescopic end of the cylinder, thereby ensuring that the displacement accuracy of the sliding seat is consistent, and the grinding quality of the stop end face can be effectively guaranteed during mass production.

[0017] 3. When this application is in use, by linking the side with a larger slope in the double-sided pin with the chamber grinding assembly, when the stop end face of the generator housing body is ground by the grinding belt, the grinding wheel can be driven to extend into the inner bearing chamber of the generator housing body synchronously through the transmission of the double-sided pin at the telescopic end of the cylinder. This enables this application to continuously perform three production processes, namely, centering and clamping the outer circle of the generator housing body, grinding the stop end face, and grinding the bearing chamber, with only one cylinder providing power, thus significantly improving the production efficiency. Brief Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the overall structure of the device of the present invention; Figure 2 It is a schematic diagram of the structure of the centering and clamping assembly of the present invention; Figure 3 It is a schematic diagram of the transverse sectional structure of the V-shaped seat of the present invention; Figure 4 It is a schematic diagram of the longitudinal sectional structure on the right side of the V-shaped seat of the present invention; Figure 5 It is a schematic diagram of the structure of the stop grinding assembly of the present invention; Figure 6 It is a schematic diagram of the longitudinal sectional structure on the left side of the V-shaped seat of the present invention; Figure 7 It is a schematic diagram of the structure of the chamber grinding assembly of the present invention.

[0019] In the figure: 1. Base; 2. Centering and clamping assembly; 201. Mounting plate; 202. Rotating pin; 203. Rocker arm; 204. V-shaped block; 205. Cylinder; 206. Telescopic rod; 207. Extrusion block; 208. Double-sided pin; 3. V-shaped seat; 4. Generator housing body; 5. Perforation; 6. Driven member; 7. Stop grinding assembly; 701. Right pin body; 702. Connecting rod; 703. Sliding seat; 704. Sand belt motor; 705. Sand belt wheel; 706. Grinding belt; 8. Chamber grinding assembly; 801. Left pin body; 802. Fork arm; 803. Tension spring; 804. Slip ring; 805. Grinding wheel; 806. Key shaft; 807. Rotating motor. Detailed Embodiment

[0020] The following further describes in detail the embodiments of the present invention in conjunction with the drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0021] Please refer to Figures 1 to 3, the present invention provides a technical solution: a centering device for machining a generator housing, including a base 1 and a centering clamping assembly 2. The centering clamping assembly 2 is arranged at the rear end of the base 1. The centering clamping assembly 2 includes a mounting plate 201 bolted to the rear end of the base 1. At both sides of the top end of the mounting plate 201, rotating pins 202 are fixedly installed. And a rocker arm 203 is rotatably installed inside the rotating pin 202. And a V-shaped block 204 is fixedly installed at the bottom of the end of the rocker arm 203. A cylinder 205 is bolted to the middle of the mounting plate 201. And a telescopic rod 206 is fixedly connected to the telescopic end of the cylinder 205. A pressing block 207 is coaxially fixed in the middle of the telescopic rod 206. And the strip groove above the pressing block 207 is in abutting cooperation with the inclined surface of the "Z" - shaped structure of the rocker arm 203. And a double - sided pin 208 is coaxially fixed at the end of the telescopic rod 206. A V - shaped seat 3 is integrally fixed at the front end of the base 1. And a generator housing body 4 is placed inside the V - shaped seat 3. And the outer circle of the generator housing body 4 is supported by the inner inclined surfaces of the V - shaped seat 3 and the V - shaped block 204 to achieve radial automatic centering; The specific operation is as follows. Place the generator housing body 4 in the middle notch of the V - shaped seat 3. Activate the cylinder 205 and drive the double - sided pin 208 to move forward through the telescopic rod 206 fixedly connected to its telescopic end. At the initial stage of the stroke, the pressing block 207 coaxially arranged in the middle of the telescopic rod 206 is in abutting cooperation with the inclined surface of the "Z" - shaped structure of the rocker arm 203 through the strip groove. Thereby forcing the rocker arm 203 to rotate inside the rotating pin 202 at the root, so that the outer circle of the generator housing body 4 is supported by the inner inclined surfaces of the V - shaped seat 3 and the V - shaped block 204 to achieve radial automatic centering. By linking the centering clamping assembly 2 at the initial stage of the stroke of the telescopic rod 206, the generator housing body 4 to be processed can be centered and clamped by the symmetric double V - shaped angles, so that it remains stable during the subsequent grinding process of the stop end face and the bearing chamber, improving the grinding quality; Please refer to Figures 4 to 5, a perforation 5 is provided through the middle of the V-shaped seat 3, and driven members 6 are symmetrically and slidably installed on both sides of the middle of the perforation 5. One side of the driven member 6 is in contact with the side with a smaller slope of the double-sided pin 208, and the other side of the driven member 6 is in contact with the other side with a larger slope of the double-sided pin 208. A stop surface grinding assembly 7 is provided on one side of the V-shaped seat 3. The stop surface grinding assembly 7 includes a right pin body 701 fixedly installed on one side of the V-shaped seat 3. A connecting rod 702 is rotatably installed inside the notch of the right pin body 701, and the inner side of the connecting rod 702 is in contact with the side with a smaller slope of the double-sided pin 208 through the driven member 6. The stop surface grinding assembly 7 further includes a sliding seat 703 rotatably connected to the top end of the connecting rod 702. The sliding seat 703 is slidably matched with the step groove on the adjacent side of the V-shaped seat 3, and a sanding belt motor 704 is bolted to the rear end of the sliding seat 703. The stop surface grinding assembly 7 further includes a sanding belt wheel 705 fixedly connected to the rotating end of the sanding belt motor 704. A grinding sanding belt 706 is sleeved outside the sanding belt wheel 705, and the driving end sanding belt wheel 705 is rotationally driven by the grinding sanding belt 706 with the driven end sanding belt wheels 705 on both sides of the front end, and the outer grinding surface of the grinding sanding belt 706 is in contact with the stop end of the generator housing body 4; The specific operation is as follows. As the double-sided pin 208 extends into the perforation 5, the side with a smaller slope in the double-sided pin 208 is squeezed and transmitted through the driven member 6 on one side to the connecting rod 702, causing the connecting rod 702 to rotate inside the right pin body 701 of the V-shaped seat 3, and then pulling the sliding seat 703 to slide in the step groove on the adjacent side of the V-shaped seat 3 and approach the stop end face of the generator housing body 4. In this application, a sanding belt wheel 705 is rotationally driven by a sanding belt motor 704 on the sliding seat 703, and further makes the grinding sanding belt 706 between the driven end sanding belt wheels 705 on both sides of the front end face the stop end face of the generator housing body 4, so that the sliding seat 703 grinds the stop end face through the grinding sanding belt 706 during the process of approaching the end of the generator housing body 4, ensuring that the smooth stop end face of the generator housing body 4 is closely attached to the machine base, guaranteeing the assembly quality. By linking the side with a smaller slope in the double-sided pin 208 with the stop surface grinding assembly 7, this application can continuously perform the grinding process on the stop end face of the generator housing body 4 after the generator housing body 4 is centered and clamped by the double V-shaped angles. Moreover, the movement of the grinding sanding belt 706 on the sliding seat 703 when it approaches the stop end face is driven by the double-sided pin 208 at the telescopic end of the cylinder 205, ensuring that the displacement accuracy of the sliding seat 703 remains consistent all the time, and effectively guaranteeing the grinding quality of the stop end face during mass production; Please refer to Figures 6 to 7, a chamber grinding assembly 8 is arranged on the other side of the V-shaped seat 3. The chamber grinding assembly 8 includes a left pin body 801 fixedly installed on the other side of the V-shaped seat 3. A fork arm 802 is rotatably installed inside the notch of the left pin body 801. The inner side of the fork arm 802 is attached to the other surface with a larger slope of the double-sided pin 208 through the follower 6. The chamber grinding assembly 8 further includes a tension spring 803 connected to the bottom end of the fork arm 802. The fork arm 802 is elastically connected to the connecting rod 702 through the tension spring 803. The top end of the fork arm 802 is rotatably connected with a slip ring 804. The chamber grinding assembly 8 further includes a grinding wheel 805 rotatably connected to the end of the slip ring 804. A key shaft 806 is radially fitted in the keyway inside the grinding wheel 805. The key shaft 806 is fixedly connected to the rotating end of the rotating motor 807; The specific operation is as follows. In addition, the surface with a larger slope in the double-sided pin 208 is squeezed and transmitted to the fork arm 802 through the follower 6 on the other side, so that the fork arm 802 rotates inside the left pin body 801 of the V-shaped seat 3. Then, the grinding wheel 805 is pulled by the slip ring 804 to axially move on the surface of the key shaft 806. On the basis of maintaining the rotational power transmission of the rotating motor 807, the grinding wheel 805 extends into the inner bearing chamber of the generator housing body 4, and the inner bearing chamber of the generator housing body 4 is ground by the grinding wheel 805 to ensure that the dimensional tolerance and form and position accuracy of the bearing chamber meet the assembly requirements of the bearing. In this application, by linking the surface with a larger slope in the double-sided pin 208 with the chamber grinding assembly 8, when the stop end face of the generator housing body 4 is ground by the grinding belt 706, the grinding wheel 805 can be driven to extend into the inner bearing chamber of the generator housing body 4 synchronously through the transmission of the double-sided pin 208 at the telescopic end of the cylinder 205. This enables this application to only require one cylinder 205 to provide power to continuously perform three production processes of centering and clamping the outer circle of the generator housing body 4, grinding the stop end face, and grinding the bearing chamber, significantly improving the production efficiency.

[0022] In summary, when using this centering device for processing the generator housing: First, place the generator housing body 4 in the middle notch of the V-shaped seat 3, activate the cylinder 205, and drive the double-sided pin 208 to move forward through the telescopic rod 206 fixedly connected to its telescopic end. At the initial stage of the stroke, the extrusion block 207 coaxial with the middle of the telescopic rod 206 abuts and cooperates with the inclined surface of the "Z" - shaped structure of the rocker arm 203 through the slot, thereby forcing the rocker arm 203 to rotate inside the rotating pin 202 at the root, enabling the outer circle of the generator housing body 4 to be supported by the inner inclined surfaces of the V-shaped seat 3 and the V-shaped block 204 to achieve radial automatic centering. By linking the centering and clamping assembly 2 at the initial stage of the stroke of the telescopic rod 206, the generator housing body 4 to be processed can be centered and clamped through the symmetric double V-shaped angles, so that it remains stable during the subsequent grinding processes of the stop end face and the bearing chamber, improving the grinding quality; Secondly, as the double-sided pin 208 extends into the through-hole 5, the side with a smaller slope in the double-sided pin 208 is squeezed and driven by a side follower 6 and a connecting rod 702, causing the connecting rod 702 to rotate within the right pin body 701 of the V-shaped seat 3. Subsequently, it pulls the sliding seat 703 to slide within the step groove on the adjacent side of the V-shaped seat 3 and approach the stop end face of the generator housing body 4. In this application, a sanding belt wheel 705 is rotationally driven by a sanding belt motor 704 on the sliding seat 703. Moreover, it further enables the sanding belt 706 between the front-end two-sided driven sanding belt wheels 705 to face the stop end face of the generator housing body 4. When the sliding seat 703 approaches the end of the generator housing body 4, the stop end face is sanded by the sanding belt 706, ensuring that the smooth stop end face of the generator housing body 4 fits tightly with the machine base, guaranteeing the assembly quality. By linking the side with a smaller slope in the double-sided pin 208 with the stop end face sanding assembly 7, this application can continuously perform the sanding process on the stop end face of the generator housing body 4 after it is clamped by the double V-shaped angle centering. Additionally, when the sanding belt 706 on the sliding seat 703 approaches the stop end face, the movement is driven by the double-sided pin 208 at the telescopic end of the cylinder 205, ensuring that the displacement accuracy of the sliding seat 703 remains consistent. During mass production, the sanding quality of the stop end face can be effectively guaranteed; Finally, in addition, the side with a larger slope in the double-sided pin 208 is squeezed and driven by the other side follower 6 and a fork arm 802, causing the fork arm 802 to rotate within the left pin body 801 of the V-shaped seat 3. Subsequently, it pulls the grinding wheel 805 to axially move on the surface of the key shaft 806 through a slip ring 804. On the basis of maintaining the rotational power transmission of the rotary motor 807, the grinding wheel 805 extends into the inner bearing chamber of the generator housing body 4, and the inner bearing chamber of the generator housing body 4 is ground by the grinding wheel 805, ensuring that the dimensional tolerance and form and position accuracy of the bearing chamber meet the assembly requirements of the bearing. By linking the other side with a larger slope in the double-sided pin 208 with the chamber grinding assembly 8, when the stop end face of the generator housing body 4 is ground by the sanding belt 706, the grinding wheel 805 can be driven by the double-sided pin 208 at the telescopic end of the cylinder 205 to extend into the inner bearing chamber of the generator housing body 4 synchronously. This enables this application to only require one cylinder 205 to provide power and continuously perform three production processes: centering and clamping the outer circle of the generator housing body 4, grinding the stop end face, and grinding the bearing chamber, significantly improving the production efficiency.

[0023] It should be noted that in this text, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device including a series of elements not only includes those elements but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device.

[0024] In this text, specific examples are used to elaborate on the principles and implementation modes of the present invention. The descriptions of the above examples are only used to help understand the method and its core idea of the present invention. The above is only the preferred implementation mode of the present invention. It should be noted that due to the limited nature of literal expression and objectively there are infinite specific structures. For those of ordinary skill in the art in this technical field, without departing from the principles of the present invention, several improvements, refinements or changes can be made, or the above technical features can be combined in an appropriate manner; these improvements, refinements, changes or combinations, or directly applying the concept and technical solution of the invention to other occasions without improvement, shall all be regarded as the protection scope of the present invention.

Claims

1. A centering device for machining a generator housing, comprising a base (1) and a centering clamping assembly (2), characterized in that, A centering and clamping assembly (2) is provided at the rear end of the base (1). The centering and clamping assembly (2) includes a mounting plate (201) bolted to the rear end of the base (1). Rotating pins (202) are fixedly installed on both sides of the top end of the mounting plate (201). A rocker arm (203) is rotatably installed inside the rotating pin (202). A V-block (204) is fixedly installed at the bottom of the end of the rocker arm (203). A cylinder (205) is bolted to the middle of the mounting plate (201). A telescopic rod (206) is fixedly connected to the telescopic end of the cylinder (205). An extrusion block (207) is coaxially fixed in the middle of the telescopic rod (206). The strip groove above the extrusion block (207) is in abutting cooperation with the inclined surface of the "Z"-shaped structure of the rocker arm (203). A double-sided pin (208) is coaxially fixed at the end of the telescopic rod (206).

2. The centering device for machining the generator housing according to claim 1, wherein, A V-block (3) is integrally fixed to the front end of the base (1). A generator housing body (4) is placed inside the V-block (3). The outer circle of the generator housing body (4) is supported by the inner inclined surfaces of the V-block (3) and the V-block (204) to achieve radial automatic centering.

3. The centering device for machining the generator housing according to claim 2, wherein A through hole (5) is formed through the middle of the V-block (3). Driven members (6) are symmetrically and slidably installed on both sides of the middle of the through hole (5).

4. The centering device for machining the generator housing according to claim 3, characterized in that, One side of the driven member (6) is in contact with the side with a smaller slope of the double-sided pin (208), and the other side of the driven member (6) is in contact with the side with a larger slope of the double-sided pin (208).

5. A centering device for machining a generator housing according to claim 4, characterized in that, A stop port grinding assembly (7) is provided on one side of the V-block (3). The stop port grinding assembly (7) includes a right pin body (701) fixedly installed on one side of the V-block (3). A connecting rod (702) is rotatably installed inside the notch of the right pin body (701). The inner side of the connecting rod (702) is in contact with the side with a smaller slope of the double-sided pin (208) through the driven member (6).

6. A centering device for machining a generator housing according to claim 5, characterized in that, The stop port grinding assembly (7) further includes a sliding seat (703) rotatably connected to the top end of the connecting rod (702). The sliding seat (703) is slidably matched with the step groove on the adjacent side of the V-block (3). A sanding belt motor (704) is bolted to the rear end of the sliding seat (703).

7. A centering device for machining a generator housing according to claim 6, characterized in that, The stop port grinding assembly (7) further includes a sanding belt wheel (705) fixedly connected to the rotating end of the sanding belt motor (704). A grinding sanding belt (706) is sleeved outside the sanding belt wheel (705). The driving-end sanding belt wheel (705) is rotationally driven by the grinding sanding belt (706) to the driven-end sanding belt wheels (705) on both sides of the front end. The outer grinding surface of the grinding sanding belt (706) is in contact with the stop port end of the generator housing body (4).

8. A centering device for machining a generator housing according to claim 7, characterized in that, A chamber grinding assembly (8) is provided on the other side of the V-block (3). The chamber grinding assembly (8) includes a left pin body (801) fixedly installed on the other side of the V-block (3). A fork arm (802) is rotatably installed inside the notch of the left pin body (801). The inner side of the fork arm (802) is in contact with the side with a larger slope of the double-sided pin (208) through the driven member (6).

9. A centering device for machining a generator housing according to claim 8, characterized in that, The chamber grinding assembly (8) further includes a tension spring (803) connected to the bottom end of the fork arm (802). The fork arm (802) is elastically connected to the connecting rod (702) through the tension spring (803), and a slip ring (804) is rotatably connected to the top end of the fork arm (802).

10. A centering device for machining a generator housing according to claim 9, characterized in that, The chamber grinding assembly (8) further includes a grinding wheel (805) rotatably connected to the end of the slip ring (804). A key shaft (806) is radially fitted into the keyway inside the grinding wheel (805), and the key shaft (806) is fixedly connected to the rotating end of a rotating motor (807).

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