Counterweight device for grinding oil pump rotor and grinding equipment

Abstract

The counterweight device for grinding the oil pump rotor comprises a shell, a plurality of counterweight sheets and an upper cover, the shell is provided with a containing cavity with an opening in the upper end, a limiting column is arranged in the middle of the containing cavity, and the bottom of the shell is further provided with a mounting groove used for being mounted to the upper end of the oil pump rotor; the weight stacks are provided with limiting holes matched with the limiting columns, the multiple weight stacks are arranged in the containing cavity in a stacked mode in the vertical direction, the limiting holes are matched with the limiting columns in a limiting mode, and the weight of the weight stacks is consistent; the upper cover is detachably installed at the upper end of the shell. The rotor grinding device is easy to operate, convenient to use and capable of meeting various rotor and grinding process requirements.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil pump rotor maintenance equipment technical field, concretely relates to a counterweight device and grinding equipment for oil pump rotor grinding. BACKGROUND

[0002] The aviation generator product is the "heart" of the airplane, and its main role is to provide usable AC and DC power supply for a large number of electronic and electrical airborne devices on the airplane, and is one of the core components of the aircraft capable of flying. The oil injection pump and the oil return pump are important components for maintaining the oil circuit operation of the combined transmission generator for aviation, and under the condition of high-speed operation of the oil injection pump and the oil return pump, the inner rotor and the outer rotor will rub and wear the upper and lower covers of the pump. Therefore, in order to maintain the mechanical properties of the pump, it is necessary to regularly maintain and repair it according to technical requirements, and the inner rotor and the outer rotor need to be ground during the repair process, and the surface roughness and the removal amount have strict requirements. Since the grinding of the inner and outer rotors is precision machining, the roughness is as low as possible while ensuring that the removal amount is less than 5 μm, so the grinding pressure should be strictly controlled.

[0003] The patent CN113134754A discloses a PTU rotor assembly oil cylinder oil distribution surface wear repair method, which comprises the following steps: S01, checking whether the flatness of the rotor assembly oil distribution surface is better than 1HLB by using a flat crystal; S02, installing a protective sleeve on the protruding shaft at the end of the rotor assembly oil distribution surface; S03, correcting the grinding track of the grinding tool; S04, evenly applying grinding paste on the grinding track of the grinding tool; S05, installing a counterweight on the upper end of the rotor assembly; S06, rotating the rotor assembly and moving it back and forth on the grinding track; S07, brushing the oil distribution surface in cleaning gasoline; S08, heating and boiling the rotor assembly in a kerosene medium container; S09, cleaning the rotor assembly in a kerosene medium ultrasonic wave container; and S10, cleaning the rotor assembly oil distribution surface with cleaning gasoline and detecting the flatness of the oil distribution surface by using a flat crystal.

[0004] Since different process standards require different grinding pressures, the above-mentioned prior art needs to frequently replace counterweight tools of different shapes and weights when facing different process standards, resulting in low work efficiency. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming the above technical defects, and provides a counterweight device for oil pump rotor grinding, which solves the technical problem of low work efficiency caused by the need to frequently replace counterweight tools of different shapes and weights in the prior art.

[0006] To achieve the above technical purpose, the utility model adopts the following technical scheme:

[0007] The utility model provides a counterweight device for oil pump rotor grinding, which comprises:

[0008] The shell is provided with a containing cavity with an open upper end, a limiting column is arranged in the middle of the containing cavity, and the bottom of the shell is further provided with a mounting groove for mounting to the upper end of the oil pump rotor;

[0009] A plurality of weight pieces are provided with limiting holes matched with the limiting column, the plurality of weight pieces are stacked in the containing cavity in the vertical direction, the limiting holes are matched with the limiting column in limiting, and the weight of each weight piece is consistent.

[0010] An upper cover is detachably mounted on the upper end of the shell.

[0011] In some embodiments, an outer thread is arranged on the outer periphery of the upper end of the shell, an inner thread is arranged on the inner side of the upper cover, and the upper cover is threadedly connected with the shell.

[0012] In some embodiments, the weight device for grinding the oil pump rotor further comprises a timing alarm, which is arranged on the upper cover or the shell.

[0013] In some embodiments, the weight device for grinding the oil pump rotor further comprises a counter, which is arranged on the side wall of the containing cavity, and the counter is used for measuring the number of the weight pieces.

[0014] In some embodiments, the side wall of the shell is further provided with a mounting hole communicating with the containing cavity.

[0015] The counter comprises a laser probe and a laser counter, the laser probe is mounted on the mounting hole and arranged towards the containing cavity, and the laser counter is mounted on the side wall of the shell and electrically connected with the laser probe.

[0016] In some embodiments, the weight piece is further provided with a plurality of grabbing holes arranged around the limiting hole.

[0017] In some embodiments, the weight device for grinding the oil pump rotor further comprises a plurality of limiting soft films, the limiting soft films are arranged in a ring shape and matched with the containing cavity, the limiting soft films are mounted on the side wall of the containing cavity in the vertical direction, and the spacing between two adjacent limiting soft films is the same as the thickness of the weight piece.

[0018] In some embodiments, the outer periphery of the bottom of the shell is further provided with a bump pad.

[0019] In some embodiments, the outer periphery of the bottom of the shell is further provided with an annular groove, the bump pad is arranged in a ring shape, and the bump pad is mounted in the annular groove.

[0020] In addition, the utility model further provides a grinding equipment, the grinding equipment comprises the weight device for grinding the oil pump rotor.

[0021] Compared with the prior art, the counterweight device for oil pump rotor grinding provided by the utility model, the shell bottom is equipped with an installation groove for mounting the shell to the rotor, the shell is equipped with a containing cavity for containing the counterweight pieces, and the upper cover is used for covering the containing cavity, because the weights of the shell, the upper cover and the counterweight are fixed, in specific use, the operator can increase or decrease the number of the counterweight pieces according to the requirement, so as to achieve the effect of different counterweights, when high-efficiency rough grinding is required, a plurality of the counterweight pieces can be added, when subsequent fine grinding and polishing are carried out, only part of the counterweight pieces need to be taken out and matched with grinding liquid to realize the corresponding process standard, the operation is simple, the use is convenient, and various rotors and grinding process requirements can be met.

[0022] The above description is only a summary of the technical scheme of the utility model, in order to more clearly understand the technical means of the utility model, and can be implemented according to the content of the specification, and the preferred embodiment of the utility model is described in detail in combination with the drawings as follows. The specific embodiment of the utility model is given in detail by the following examples and their drawings. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a structure schematic view of one embodiment of the counterweight device for oil pump rotor grinding provided by the utility model;

[0024] Figure 2 It is Figure 1 The front view of the shell and the upper cover;

[0025] Figure 3 It is Figure 1 The top view of the counterweight piece.

[0026] BRIEF DESCRIPTION OF DRAWINGS:

[0027] 1-shell, 11-containing cavity, 12-limiting column, 13-installation groove, 2-counterweight piece, 21-limiting hole, 22-grabbing hole, 3-upper cover, 4-timing alarm, 5-laser probe, 6-laser counter, 7-limiting film, 8-anti-collision pad. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described here are only used to explain the utility model, and are not used to limit the utility model.

[0029] To address the technical problem of low work efficiency caused by the need for frequent replacement of counterweights of different shapes and weights in existing technologies, this utility model provides a counterweight device for oil pump rotor grinding. The device can increase or decrease the number of counterweight plates as needed to achieve different counterweight effects. When high-efficiency coarse grinding is required, multiple counterweight plates can be added. When subsequent fine grinding and polishing are performed, only a portion of the counterweight plates need to be removed and used with grinding fluid to achieve the corresponding process standards. The device is simple to operate, convenient to use, and can meet the requirements of various rotors and grinding processes.

[0030] Please see Figure 1 , Figure 1 This is a schematic diagram of the counterweight device for grinding the oil pump rotor in one embodiment of the present invention.

[0031] This utility model provides a counterweight device for grinding an oil pump rotor, including a housing 1, multiple counterweight plates 2, and a top cover 3. The housing 1 has a receiving cavity 11 with an upper opening, and a limiting post 12 is provided in the middle of the receiving cavity 11. The bottom of the housing 1 also has a mounting groove 13 for mounting to the upper end of the oil pump rotor. The counterweight plates 2 have limiting holes 21 that are adapted to the limiting post 12. Multiple counterweight plates 2 are stacked vertically in the receiving cavity 11, and the limiting holes 21 are matched with the limiting post 12. Each counterweight plate 2 has the same weight. The top cover 3 can be detachably installed on the upper end of the housing 1.

[0032] In this embodiment, please refer to Figure 1 and Figure 2 The housing 1 has a mounting groove 13 at its bottom for mounting the housing 1 onto the rotor. The housing 1 has a receiving cavity 11 for accommodating the counterweight 2, and the upper cover 3 is used to cover the receiving cavity 11. Since the weights of the housing 1, the upper cover 3, and the counterweight are all fixed, the operator can increase or decrease the number of counterweights 2 as needed to achieve different counterweight effects. When high-efficiency coarse grinding is required, multiple counterweights 2 can be added. When subsequent fine grinding and polishing are performed, only a portion of the counterweights 2 need to be removed and used with grinding fluid to achieve the corresponding process standards. The operation is simple and convenient, and it can meet the requirements of various rotors and grinding processes.

[0033] In some embodiments, please refer to Figure 1 and Figure 2 The outer periphery of the upper end of the housing 1 is provided with external threads, and the inner side of the upper cover 3 is provided with internal threads. The upper cover 3 is threadedly connected to the housing 1.

[0034] In some embodiments, please refer to Figure 1 and Figure 2The oil pump rotor grinding counterweight device further comprises a timing alarm 4 arranged on the upper cover 3 or the shell 1.

[0035] In the embodiment, since the grinding of the inner rotor and the outer rotor is precision machining, the grinding time also needs to be strictly controlled while ensuring that the removal amount is less than 5 μm and the roughness is as low as possible. In order to facilitate the control of the grinding time, the timing alarm 4 is further arranged. The grinding time can be set on the timing alarm 4, and the alarm will be triggered when the grinding time exceeds the set threshold value, reminding the operator to turn off the grinding table, so as to achieve quantitative grinding process and realize on-site process flow control. The installation position of the timing alarm 4 is not limited, which can be installed on the upper cover 3 or the side of the shell 1. In the embodiment, the timing alarm 4 is installed on the upper side of the upper cover 3.

[0036] In some embodiments, referring to Figure 1 and Figure 2 , the oil pump rotor grinding counterweight device further comprises a counter arranged on the side wall of the accommodating cavity 11. The counter is used to measure the number of the counterweight pieces 2.

[0037] In the embodiment, in order to facilitate the calculation of the number of the counterweight pieces 2 in the accommodating groove, the counter is further arranged on the side wall of the accommodating cavity 11. The counter can detect the number of the counterweight pieces 2 in the accommodating cavity 11, thereby facilitating the operator to calculate the weight of the entire counterweight device.

[0038] In some embodiments, referring to Figure 1 and Figure 2 , the side wall of the shell 1 is further provided with a mounting hole communicating with the accommodating cavity 11; the counter comprises a laser probe 5 and a laser counter 6. The laser probe 5 is arranged on the mounting hole and faces the accommodating cavity 11. The laser counter 6 is arranged on the side wall of the shell 1 and is electrically connected with the laser probe 5.

[0039] In the embodiment, the laser probe 5 is arranged close to the upper end of the shell 1. The laser probe 5 can emit laser to the accommodating cavity 11. When the counterweight piece 2 is placed into the accommodating cavity 11, the counterweight piece 2 will block the laser, thereby achieving detection and displaying on the laser counter 6. The counting of the counterweight piece 2 is completed by calculating the number of blocking times.

[0040] It can be understood that the laser probe 5 and the laser counter 6 are both prior art, which will not be described here.

[0041] In some embodiments, referring to Figure 3The counterweight piece 2 is also provided with a plurality of grabbing holes 22 arranged around the limiting hole 21.

[0042] In the embodiment, since the counterweight piece 2 is adapted to the accommodating cavity 11, and the limiting hole 21 is adapted to the limiting column 12, the side surface of the counterweight piece 2 is close to the side surface of the accommodating cavity 11 after the counterweight piece 2 is placed in the accommodating cavity 11, and it is inconvenient to take the counterweight piece 2. Therefore, a plurality of grabbing holes 22 are arranged on the counterweight piece 2, and the grabbing holes 22 are arranged to facilitate the operator to take the counterweight piece 2.

[0043] In some embodiments, referring to Figure 2 The counterweight device for oil pump rotor grinding further comprises a plurality of limiting soft sheets 7, the limiting soft sheets 7 are annularly arranged and adapted to the accommodating cavity 11, the limiting soft sheets 7 are installed on the side wall of the accommodating cavity 11 along the vertical direction, and the distance between adjacent two limiting soft sheets 7 is the same as the thickness of the counterweight piece 2.

[0044] In the embodiment, the limiting cooperation of the limiting column 12 and the limiting hole 21 can only limit the counterweight piece 2 in the circumferential direction, and cannot limit the counterweight piece 2 in the axial direction. In order to avoid the counterweight piece 2 from shaking during the grinding process, a plurality of limiting soft sheets 7 are arranged on the side wall of the accommodating cavity 11, the limiting soft sheets 7 are arranged along the vertical direction, the distance between adjacent two limiting soft sheets 7 is the same as the thickness of the counterweight piece 2, and the distance from the limiting soft sheet 7 at the bottom to the bottom of the accommodating cavity 11 is the same as the thickness of the counterweight piece 2. In this way, the accommodating cavity 11 can be divided into placing areas arranged along the vertical direction by the limiting soft sheets 7, and each placing area is used for placing one counterweight piece 2. Thus, the counterweight piece 2 is limited by the limiting soft sheets 7, so as to avoid shaking during the grinding process. Since the limiting soft sheets 7 are made of flexible material and are soft and can be elastically deformed, the limiting soft sheets 7 will not hinder the taking of the counterweight piece 2.

[0045] In some embodiments, referring to Figure 2 The bottom outer periphery of the shell 1 is further provided with a bump pad 8.

[0046] In the embodiment, since the shell 1 is installed on the upper end of the rotor, the entire counterweight device is pressed on the rotor, so that the counterweight device may be tilted. Tilting of the counterweight device will seriously damage the precise grinding table and cause the production line to stop. In order to avoid damage to the grinding table caused by tilting of the counterweight device, the bottom of the shell 1 is further provided with a bump pad 8. The bump pad 8 is made of flexible material. When the shell 1 is tilted, the bump pad 8 first contacts the grinding table. Since the bump pad 8 is soft, the bump pad 8 can well protect the grinding table.

[0047] In some embodiments, referring to Figure 2 , the bottom of the shell 1 is also provided with an annular groove, and the anti-collision pad 8 is annularly arranged and installed in the annular groove.

[0048] In this embodiment, the bottom of the shell 1 is provided with an annular groove, which is annularly arranged outside the mounting groove 13, and the anti-collision pad 8 is annularly arranged and installed in the annular groove.

[0049] In addition, the utility model provides a kind of grinding equipment, and the grinding equipment includes the counterweight device for oil pump rotor grinding.

[0050] In order to better understand the utility model, the following is combined Figures 1 to 3 The technical scheme of the utility model is described in detail:

[0051] Before grinding, set the grinding time according to the process standard and input it into the timing alarm 4, install the anti-collision pad 8 into the annular groove, and then according to the expected grinding pressure, sequentially pass the corresponding number of the counterweight sheet 2 through the limiting column 12 into the containing groove, and fix it through the limiting soft sheet 7, the laser probe 5 can record the number of the counterweight sheet 2, then according to the laser counter 6, whether the counterweight pressure can meet the process standard can be checked, the upper cover 3 is screwed, the rotor to be ground is placed on the grinding table, the mounting groove 13 is aligned with the rotor, is vertically pressed above the rotor and uses the mounting groove 13 to fix the whole device above the rotor, and the timer is started to count down and start grinding.

[0052] The application can quantify the grinding process, ensure the corresponding grinding pressure and grinding time under different process standard requirements, and avoid excessive grinding of rotor surface and unstable grinding quality of rotor surface.

[0053] The application can effectively control the grinding pressure by changing the number of the counterweight sheet 2, can meet the needs of various grinding standards, save the space cost and labor cost required by traditional tooling and counterweight.

[0054] The application increases the anti-collision pad 8 to effectively avoid damage to the grinding table caused by the counterweight, reduces the operation risk, and helps the operator to improve work efficiency.

[0055] The specific implementation mode of the utility model described above does not constitute a limitation on the protection scope of the utility model. Any various other corresponding changes and modifications made according to the technical concept of the utility model shall be included in the protection scope of the claims of the utility model.

Claims

1. A counterweight device for oil pump rotor grinding, characterized by, It comprises: a shell, provided with a containing cavity with an open upper end, a limiting column is arranged in the middle of the containing cavity, and a mounting groove for mounting to the upper end of an oil pump rotor is further arranged at the bottom of the shell; a plurality of weight pieces, provided with limiting holes matched with the limiting column, the plurality of weight pieces are stacked in the containing cavity in the vertical direction, and the limiting holes are limitedly matched with the limiting column, and each of the weight pieces has the same weight; and an upper cover, detachably mounted on the upper end of the shell.

2. The counterweight device for oil pump rotor grinding according to claim 1, characterized by, An outer thread is arranged on the outer periphery of the upper end of the shell, and an inner thread is arranged on the inner side of the upper cover, and the upper cover is threadedly connected with the shell.

3. The counterweight device for oil pump rotor grinding according to claim 1, characterized by, The oil pump rotor grinding weight device further comprises a timing alarm, which is arranged on the upper cover or the shell.

4. The counterweight device for oil pump rotor grinding according to claim 1, characterized by The oil pump rotor grinding weight device further comprises a counter, which is arranged on the side wall of the containing cavity, and the counter is used for measuring the number of the weight pieces.

5. The counterweight device for oil pump rotor grinding according to claim 4, characterized in that, The side wall of the shell is further provided with a mounting hole communicating with the containing cavity. The counter comprises a laser probe and a laser counter, the laser probe is mounted on the mounting hole and arranged towards the containing cavity, and the laser counter is mounted on the side wall of the shell and electrically connected with the laser probe.

6. The counterweight device for an oil pump rotor grinding according to claim 1, characterized by The weight piece is further provided with a plurality of grabbing holes arranged around the limiting hole.

7. The counterweight device for an oil pump rotor grinding according to claim 1, characterized by The oil pump rotor grinding weight device further comprises a plurality of limiting soft films, which are arranged in a ring shape and matched with the containing cavity, and are mounted on the side wall of the containing cavity in the vertical direction, and the distance between two adjacent limiting soft films is the same as the thickness of the weight piece.

8. The counterweight device for an oil pump rotor grinding according to claim 1, characterized by The outer periphery of the bottom of the shell is further provided with a bump pad.

9. The counterweight device for an oil pump rotor grinding according to claim 8, characterized by The outer periphery of the bottom of the shell is further provided with an annular groove, and the bump pad is arranged in a ring shape and mounted in the annular groove.

10. A grinding apparatus characterized by comprising: The grinding equipment comprises the oil pump rotor grinding weight device according to any one of claims 1-9.

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