Novel centrifugal impeller abrasive flow tool clamp

Abstract

The utility model relates to a novel centrifugal impeller abrasive flow work fixture which comprises an upper equipment pressing plate, a lower equipment supporting plate and a work fixture body, the work fixture body is composed of a lower base plate, a check ring and an upper base plate, the lower base plate is provided with a positioning spigot, and a centrifugal impeller is installed in the positioning spigot of the lower base plate. The upper base plate is connected with an upper pressing plate of equipment through supporting screws, a containing through hole matched with an air outlet of the centrifugal impeller is formed in the middle of the upper base plate, check rings are installed on the periphery of the containing through hole and located on the edge of the bottom face of the upper base plate, and the upper pressing plate pushes the upper base plate through the supporting screws to press the centrifugal impeller. According to the centrifugal impeller grinding device, it can be effectively guaranteed that in the grinding machining process of a centrifugal impeller, the flow speed of grinding materials passing through the interior of the impeller is uniform, extrusion force is consistent, surface grinding consistency and consistency of the grinding direction and the airflow working direction of the centrifugal impeller are achieved, machining efficiency and machining precision are improved, and the production and machining requirements are met.

Description

Technical Field

[0001] The utility model belongs to the technical field of impeller abrasive flow processing, and in particular relates to a novel centrifugal impeller abrasive flow tooling fixture. Background Art

[0002] Under the existing conditions, the impeller is the core component of the centrifugal compressor, and its flow channel roughness affects the efficiency of the compressor. The flow channel surface of the centrifugal impeller is a relatively complex three-dimensional curved and twisted surface. The surface roughness of the flow channel is uneven after milling, welding and grinding, and the fine corners cannot be polished. Faced with complex curved blades and increasingly high precision requirements, traditional impeller grinding and polishing cannot meet the needs. During the grinding process of the centrifugal impeller, the flow velocity of the abrasive passing through the impeller is uneven, which will lead to inconsistent extrusion pressure, thus having a great impact on the processing efficiency and processing accuracy.

[0003] Therefore, a new centrifugal impeller abrasive flow fixture is designed to overcome the above problems. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and to provide a new centrifugal impeller abrasive flow fixture with a simple and reasonable structure, which can effectively ensure that during the grinding process of the centrifugal impeller, the flow velocity of the abrasive passing through the impeller is uniform and the extrusion pressure is consistent, so as to achieve surface grinding consistency and consistency between the grinding direction and the working direction of the centrifugal impeller airflow, thereby improving the processing efficiency and processing accuracy and meeting the production and processing requirements.

[0005] The utility model is realized through the following technical scheme: a novel centrifugal impeller abrasive flow fixture, comprising an upper pressure plate on the device, a lower support plate on the device, and a fixture body arranged between the upper pressure plate on the device and the lower support plate on the device, wherein the fixture body is composed of a lower pad, a retaining ring and an upper pad, wherein a positioning stop is arranged in the middle position of the lower pad, and the positioning stop is used for connecting the lower pad with the lower support plate and for installing the centrifugal impeller in the positioning stop of the lower pad with the air inlet facing downward, and the lower pad is arranged at the positive position of the lower pad. An upper pad is arranged on the top, and the upper pad is connected to the upper pressure plate of the equipment through tightening screws. A placement through hole matching the centrifugal impeller air outlet is arranged in the middle position of the upper pad. The placement through hole is used to cooperate with the positioning stop to install and limit the centrifugal impeller, and a retaining ring is installed around the placement through hole at the edge of the bottom surface of the upper pad. The upper pressure plate pushes the upper pad to press the centrifugal impeller through the tightening screws. The abrasive is transported from the centrifugal impeller air inlet to the centrifugal impeller air outlet, and returns to the inside of the abrasive flow equipment through the gap between the retaining ring and the centrifugal impeller air outlet.

[0006] Preferably, a guide cover plate is arranged above the side of the centrifugal impeller close to the lower pad, and the guide cover plate is provided with an assembly groove connected to the centrifugal impeller and is installed and fixed by bolts. The guide cover plate is used to prevent the abrasive flow and abrasive from flowing out through the inner hole of the centrifugal impeller and play a role in guiding flow.

[0007] Preferably, the retaining ring is detachably connected to the upper pad, a T-shaped groove is provided on one side of the retaining ring close to the upper pad, and the retaining ring is connected and fixed by bolts matching the T-shaped groove, so as to facilitate the removal and replacement of the retaining ring.

[0008] The beneficial effects of the utility model are as follows:

[0009] The new centrifugal impeller abrasive flow fixture designed by the utility model can effectively ensure that during the grinding process of the centrifugal impeller, the flow velocity of the abrasive passing through the impeller is uniform and the extrusion pressure is consistent, thereby achieving surface grinding consistency and consistency between the grinding direction and the working direction of the centrifugal impeller airflow, thereby improving the processing efficiency and processing accuracy and meeting the production and processing requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0011] In order to enable ordinary technicians in the field to more clearly understand the purpose, technical solutions and advantages of the utility model, the utility model is further explained below in conjunction with the accompanying drawings and embodiments.

[0012] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "horizontal" and "vertical" are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention. They do not indicate or imply that the device or component referred to must have a specific direction and therefore should not be understood as a limitation on the present invention.

[0013] The utility model will be described in detail below with reference to the accompanying drawings: Figure 1As shown, a novel centrifugal impeller abrasive flow fixture comprises an upper pressure plate 1 of the device, a lower support plate 2 of the device, and a fixture body arranged between the upper pressure plate 1 of the device and the lower support plate 2 of the device, wherein the fixture body is composed of a lower pad 3, a retaining ring 4 and an upper pad 6, wherein a positioning stop 9 is arranged in the middle position of the lower pad, and the positioning stop 9 is used for connecting the lower pad 3 with the lower support plate 2 of the device and for installing the centrifugal impeller 7 in the positioning stop 9 of the lower pad 3 with the air inlet 8 facing downward, and an upper pad 6 is arranged directly above the lower pad 3, and the upper pad 6 is The tightening screw 10 is connected to the upper pressure plate 1 of the equipment, and a placement through hole 12 matching the air outlet 11 of the centrifugal impeller 7 is arranged in the middle position of the upper pad 6. The placement through hole 12 is used to cooperate with the positioning stop 9 to install and limit the centrifugal impeller 7, and a retaining ring 4 is installed around the placement through hole 12 at the bottom edge of the upper pad 6. The pressure plate 1 on the equipment pushes the upper pad 6 to press the centrifugal impeller 7 through the tightening screw 10, and the abrasive is transported from the air inlet 8 of the centrifugal impeller 7 to the air outlet 11 of the centrifugal impeller 7, and returns to the inside of the abrasive flow equipment through the gap between the retaining ring 4 and the air outlet of the centrifugal impeller 7.

[0014] A guide plate 13 is arranged above the centrifugal impeller 7 on one side close to the lower pad 3. The guide plate 13 is provided with an assembly groove connected to the centrifugal impeller and is installed and fixed by bolts 5. The guide plate 13 is used to prevent the abrasive flow and abrasive from flowing out through the inner hole of the centrifugal impeller 7 and to play a guiding role.

[0015] The retaining ring 4 and the upper pad 6 are detachably connected. A T-shaped groove is provided on one side of the retaining ring 4 close to the upper pad 6. The retaining ring 4 is connected and fixed by bolts matched with the T-shaped groove, which facilitates the removal of the retaining ring 4 and the replacement of retaining rings of different sizes.

[0016] The working characteristics of the utility model are as follows:

[0017] Use screws to connect the impeller and the guide cover to prevent the abrasive flow from flowing out through the inner hole of the impeller, and at the same time play a guiding role. Fix the lower pad to the lower support plate of the equipment through the positioning stop, place the impeller on the lower pad with the air inlet facing down, connect the retaining ring to the upper pad, fix the tightening screws on the upper pad, use the upper pressure plate of the equipment to tighten the impeller through the tightening screws, and the abrasive is transported from the air inlet to the air outlet, and returns to the inside of the abrasive flow equipment through the gap between the retaining ring and the air outlet.

[0018] The utility model is used to fix the centrifugal impeller, guide the abrasive flow to pass through the surface of the impeller blade flow channel, and can increase the abrasive flow to pass through the impeller flow channel to generate a certain extrusion force, thereby polishing and grinding the inside of the impeller. It has convenient operation and universal interchangeability, and meets the processing requirements of the process and the convenience and universality requirements of production.

[0019] The specific embodiments described herein are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by a person of ordinary skill in the art without departing from the spirit and technical ideas disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A novel centrifugal impeller abrasive flow fixture, comprising an equipment upper plate (1), an equipment lower support plate (2), and a fixture body arranged between the equipment upper plate (1) and the equipment lower support plate (2), characterized in that: The fixture body is composed of a lower pad (3), a retaining ring (4) and an upper pad (6), wherein a positioning stop (9) is provided in the middle of the lower pad, the positioning stop is used to connect the lower pad (3) with the lower support plate (2) of the device and to install the centrifugal impeller (7) in the positioning stop (9) of the lower pad (3) with the air inlet (8) facing downwards, an upper pad (6) is provided directly above the lower pad (3), the upper pad (6) is connected to the upper pressure plate (1) of the device via a tightening screw (10), and a screw (10) is provided in the middle of the upper pad (6) to connect with the centrifugal impeller The centrifugal impeller (7) is provided with a placement through hole (12) matching the air outlet (11). The placement through hole (12) is used to cooperate with the positioning stop (9) to install and limit the centrifugal impeller (7), and a retaining ring (4) is installed around the placement through hole (12) at the bottom edge of the upper pad (6). The upper pressure plate (1) of the equipment pushes the upper pad (6) to press the centrifugal impeller (7) through the tightening screw (10), and the abrasive is transported from the air inlet (8) of the centrifugal impeller (7) to the air outlet (11) of the centrifugal impeller (7), and returns to the interior of the abrasive flow equipment through the gap between the retaining ring (4) and the air outlet of the centrifugal impeller (7).

2. The novel centrifugal impeller abrasive flow fixture according to claim 1 is characterized in that: A flow guide plate (13) is arranged above the centrifugal impeller (7) on one side close to the lower pad (3); the flow guide plate (13) is provided with an assembly groove connected to the centrifugal impeller and is installed and fixed by bolts (5); the flow guide plate (13) is used to prevent abrasive flow and abrasives from flowing out through the inner hole of the centrifugal impeller (7) and to play a role in guiding flow.

3. The novel centrifugal impeller abrasive flow fixture according to claim 1 is characterized in that: The retaining ring (4) and the upper pad (6) are detachably connected, a T-shaped groove is provided on one side of the retaining ring (4) close to the upper pad (6), and the retaining ring (4) is connected and fixed by bolts matched with the T-shaped groove, so that the retaining ring (4) can be easily removed and replaced.

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