Automobile electronic vacuum pump rotor grooving equipment

Abstract

The present invention discloses a grooving device for an automotive electronic vacuum pump rotor, which solves the technical problem that the existing technology has low grooving efficiency and is not suitable for large-scale mass production when grooving an automotive electronic vacuum pump rotor made of graphite material. The present invention includes a workbench, a positioning mechanism and a grooving mechanism. The positioning mechanism includes a first telescopic cylinder installed on the workbench, a servo motor installed on the telescopic rod of the first telescopic cylinder, and a positioning pin installed on the rotary drive shaft of the servo motor and matched with the central hole of the automotive electronic vacuum pump rotor. The grooving mechanism includes a second telescopic cylinder installed on the workbench, and a grooving tool installed on the telescopic rod of the second telescopic cylinder. The positioning pin penetrates through the central hole of the automotive electronic vacuum pump rotor, and the grooving tool is directly opposite to the automotive electronic vacuum pump rotor penetrating through the positioning pin. The present invention is scientifically and reasonably designed and convenient to use, and has the characteristics of high grooving efficiency, high grooving precision and high grooving yield.

Description

Technical Field

[0001] The present invention relates to the field of manufacturing automotive water pump bearings, and particularly to an automotive electronic vacuum pump rotor grooving device. Background Art

[0002] In the cylinder block of an automotive engine, there are multiple water channels for cooling water circulation, which are connected to a radiator (commonly known as a water tank) placed at the front of the vehicle through water pipes, forming a large water circulation system. At the upper water outlet of the engine, there is a water pump, which is driven by a fan belt to pump out the hot water in the water channels of the engine cylinder block and pump in cold water. There is also a thermostat beside the water pump. When the vehicle is just started (cold), it does not open, so that the cooling water does not pass through the water tank and only circulates within the engine (commonly known as a small cycle). When the engine temperature reaches above 95 degrees, it opens, and the hot water in the engine is pumped into the water tank. The cold air when the vehicle is moving forward blows through the water tank to take away the heat.

[0003] Centrifugal water pumps are widely used in automotive engines. Its basic structure consists of parts such as a water pump housing, a connection disk or pulley, a water pump shaft and bearings or shaft-connected bearings, a water pump impeller, and a water seal device, and is a main component of the vehicle.

[0004] The engine drives the water pump bearings and impeller to rotate through a pulley. The coolant in the water pump is driven by the impeller to rotate together, and under the action of centrifugal force, it is thrown towards the edge of the water pump housing, and at the same time, a certain pressure is generated, and then it flows out from the water outlet channel or water pipe. Due to the coolant being thrown out, the pressure at the center of the impeller decreases. The coolant in the water tank is sucked into the impeller through the water pipe under the pressure difference between the water pump inlet and the center of the impeller, realizing the reciprocating circulation of the coolant.

[0005] The bearings supporting the water pump shaft are lubricated with grease. Therefore, it is necessary to prevent the coolant from leaking into the grease to cause grease emulsification, and at the same time, prevent the leakage of grease. The sealing measures for the water pump to prevent leakage are water seals and gaskets. The dynamic sealing ring of the water seal is installed between the impeller and the bearing with an interference fit with the shaft, and the static sealing seat of the water seal is tightly pressed on the water pump housing, so as to achieve the purpose of sealing the coolant.

[0006] The water pump housing is connected to the engine through a gasket and supports moving parts such as bearings. There is also a drain hole on the water pump housing, located between the water seal and the bearing. Once the coolant leaks through the water seal, it can drain out from the drain hole to prevent the coolant from entering the bearing cavity and damaging the bearing lubrication and causing component corrosion.

[0007] Graphite is an allotrope of carbon. It is a gray-black, opaque solid with a density of 2.25 grams per cubic centimeter, a melting point of 3652°C, and a boiling point of 4827°C. It has stable chemical properties, is corrosion-resistant, and does not react easily with acids, alkalis, and other agents. It burns in oxygen at 687°C to produce carbon dioxide. It can be oxidized by strong oxidants such as concentrated nitric acid and potassium permanganate. It can be used as an anti-wear agent and lubricant. High-purity graphite is used as a neutron moderator in atomic reactors. It can also be used to make crucibles, electrodes, brushes, dry batteries, graphite fibers, heat exchangers, coolers, arc furnaces, arc lamps, pencil refills, etc. Based on the above characteristics of graphite, existing automotive electronic water pump bearings are generally made of graphite materials, such as Figure 4 As shown, it is in the shape of a cylindrical block, with a diameter of 31-41mm and a height of less than 20mm. A through hole is opened in the center, and eight through grooves are opened around the through hole. In the prior art, when slotting the automotive electronic water pump bearing, the graphite block to be slotted is generally fixed at the slotting station, and a slotting knife is used to open a slot as required, and then the graphite block is removed, and the position of the graphite block is adjusted and then fixed at the slotting station to open the second slot. In this way, eight slots are opened in sequence. In the slotting process, misoperation often occurs, which reduces the slotting accuracy of the graphite block, increases the defective rate, and increases the manufacturing cost of the automotive electronic water pump bearing in disguise. It has the problems of complex operation, low slotting efficiency, and unsatisfactory slotting accuracy.

[0008] Therefore, the present application designs an automotive electronic vacuum pump rotor slotting device, which can accurately slot the automotive electronic water pump bearing efficiently and quickly. Summary of the invention

[0009] The technical problem to be solved by the present invention is to provide automotive electronic vacuum pump rotor slotting equipment to solve the technical problem that the prior art has low slotting efficiency and is not suitable for large-scale mass production when slotting automotive electronic graphite water pump bearings.

[0010] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0011] The invention discloses an automobile electronic vacuum pump rotor slotting device, comprising a workbench, a positioning mechanism and a slotting mechanism, wherein the positioning mechanism comprises a first telescopic cylinder mounted on the workbench, a servo motor mounted on the telescopic rod of the first telescopic cylinder, and a positioning needle mounted on the rotating drive shaft of the servo motor and matched with the center hole of the automobile electronic water pump bearing, and the slotting mechanism comprises a second telescopic cylinder mounted on the workbench, and a slotting knife mounted on the telescopic rod of the second telescopic cylinder, wherein the positioning needle is penetrated into the center hole of the automobile electronic water pump bearing, and the slotting knife is directly opposite to the automobile electronic water pump bearing penetrated on the positioning needle.

[0012] Further, it further includes a jacket mechanism installed on the workbench for sleeving on the grooving tool and cooperating with the positioning pin to clamp the bearing of the automotive electronic water pump.

[0013] Further, the jacket mechanism includes a grooving tool sleeve sleeved on the grooving tool, and a clamping column with one end connected to the grooving tool sleeve for cooperating with the positioning pin to clamp the bearing of the automotive electronic water pump. At least one grooving tool guiding groove matching with the grooving tool is formed on the clamping column.

[0014] Further, an outer end of the clamping column is provided with a socket groove facing the positioning pin and used for sleeving the bearing of the automotive electronic water pump.

[0015] Further, the socket groove and the bearing of the automotive electronic water pump are in clearance fit.

[0016] Further, it further includes a grooving mechanism housing installed on the workbench. The second telescopic cylinder and the grooving tool are located inside the grooving mechanism housing, and the grooving tool sleeve is fixedly installed on the grooving mechanism housing.

[0017] Further, the positioning pin includes a pin base installed on the rotary drive shaft of the servo motor, and a pin head provided on the pin base. The central hole of the bearing of the automotive electronic water pump passes through the pin head.

[0018] Further, the pin base is cylindrical, and its diameter is larger than the diameter of the central hole of the bearing of the automotive electronic water pump.

[0019] Further, the pin head and the central hole of the bearing of the automotive electronic water pump are in interference fit.

[0020] Further, it further includes a positioning mechanism housing installed on the workbench. The first telescopic cylinder and the servo motor are both located inside the positioning mechanism housing.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The structure of the present invention is simple, scientifically reasonable in design, and convenient to use. It has the characteristics of high grooving efficiency, high grooving accuracy, and high grooving yield.

[0023] The present invention mainly includes a positioning mechanism, a grooving mechanism, and a jacket mechanism. The positioning mechanism includes a first telescopic cylinder, a servo motor, and a positioning pin. The first telescopic cylinder and the servo motor are installed inside the housing of the positioning mechanism. The positioning pin consists of a needle base and a needle head with an integral structure. The servo motor is installed on the telescopic rod of the first telescopic cylinder. The telescopic rod is horizontally distributed. The needle base is fixedly installed on the rotary drive shaft of the servo motor. Both the needle base and the needle head are cylindrical and are horizontally distributed symmetrically. The first telescopic cylinder can drive the positioning pin installed on the servo motor to reciprocate horizontally. The servo motor can drive the positioning pin to rotate precisely along its axis. The bearing of the automotive electronic water pump passes through the needle head through its central hole. The needle head and the central hole are in interference fit to prevent the water pump bearing from slipping and rotating on the needle head. The diameter of the needle base is larger than the central hole of the bearing, which plays a limiting role.

[0024] The grooving mechanism and the jacket mechanism of the present invention cooperate in operation. The grooving mechanism includes a second telescopic cylinder and a grooving tool installed inside the housing of the grooving mechanism. The grooving tool is installed on the second telescopic cylinder. The second telescopic cylinder is horizontally distributed and can drive the grooving tool to reciprocate horizontally. The jacket mechanism includes a grooving tool sleeve and a clamping column. The grooving tool sleeve is installed on the housing of the grooving mechanism and covers the grooving operation section of the grooving tool, playing a protective role. At the same time, the stepped surface where the grooving tool sleeve is connected to the clamping column can also play a limiting role. This stepped surface is the maximum stroke for the grooving tool to extend out for grooving. The front end of the clamping column is provided with a socket groove, which is matched with the bearing of the automotive electronic water pump. The inner side wall of the socket groove and the outer side wall of the bearing of the automotive electronic water pump are in clearance fit, facilitating the insertion of the bearing of the automotive electronic water pump into the socket groove. At least one grooving tool guiding groove is opened on the clamping column. When the grooving tool runs outward under the action of the second telescopic cylinder, it enters the grooving tool guiding groove and continues to advance into the socket groove to perform grooving operation on the water pump bearing clamped in the socket groove. The socket groove is directly opposite to the water pump bearing passing through the needle head. When the water pump bearing runs towards the clamping column under the action of the first telescopic cylinder, it just fits into the socket groove. The water pump bearing is clamped in the socket groove by the positioning pin, with good stability, facilitating the grooving operation of the grooving tool and also conducive to ensuring the grooving accuracy.

[0025] When the present invention is in use, the bearing of the automotive electronic water pump is sleeved on the needle tip of the positioning needle. The first telescopic cylinder is opened to make the water pump bearing move towards the socket groove of the clamping column. When the water pump bearing is sleeved into the socket groove and fixed by the combined action of the positioning needle and the clamping column, the grooving knife and the second telescopic cylinder are opened simultaneously. The grooving knife enters the socket groove along the grooving knife guiding groove to groove the water pump bearing. After one groove is completed, the grooving knife is retracted, the servo motor is started, the water pump bearing is driven to rotate a certain angle (45°), and then the servo motor is turned off. The grooving knife is started again to enter the socket groove to groove the second groove of the water pump bearing. By repeating this cycle, eight grooves can be grooved on the water pump bearing as required. It has high grooving efficiency, high grooving precision, and high grooving yield rate, can be applied to large-scale mass production, effectively reduce the defective rate, and save the manufacturing cost of the water pump bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 FIG. is a schematic structural diagram of the present invention.

[0027] Figure 2 FIG. is a schematic structural diagram of the jacket mechanism of the present invention.

[0028] Figure 3 FIG. is a schematic structural diagram of the positioning needle of the present invention.

[0029] Figure 4 FIG. is a schematic structural diagram of the rotor of the automotive electronic vacuum pump of the present invention.

[0030] Among them, the names corresponding to the reference numerals are as follows:

[0031] 1 - Workbench, 2 - First telescopic cylinder, 3 - Servo motor, 4 - Positioning needle, 5 - Second telescopic cylinder, 6 - Grooving knife, 7 - Grooving knife sleeve, 8 - Clamping column, 9 - Socket groove, 10 - Grooving knife guiding groove, 11 - Grooving mechanism housing, 12 - Positioning mechanism housing, 41 - Needle base, 42 - Needle tip. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0034] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; of course, it can also be a mechanical connection or an electrical connection; in addition, it can be directly connected or indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] As Figures 1-3 shown, the rotor grooving device for automotive electronic vacuum pumps provided by the present invention has a simple structure, is scientifically and reasonably designed, and is convenient to use. It has the characteristics of high grooving efficiency, high grooving accuracy, and high grooving yield. The present invention includes a workbench 1, a positioning mechanism, a positioning mechanism housing 12, a grooving mechanism, a grooving mechanism housing 11, and a jacket mechanism.

[0036] The positioning mechanism of the present invention includes a first telescopic cylinder 2 installed on the workbench 1, a servo motor 3 installed on the telescopic rod of the first telescopic cylinder 2, and a positioning pin 4 installed on the rotary drive shaft of the servo motor 3 and cooperating with the center hole of the bearing of the automotive electronic water pump; the positioning pin 4 includes a pin seat 41 installed on the rotary drive shaft of the servo motor 3 and a pin head 42 provided on the pin seat 41, and the center hole of the bearing of the automotive electronic water pump passes through the pin head 42; the pin seat 41 is cylindrical, its diameter is larger than the diameter of the center hole of the bearing of the automotive electronic water pump, and the pin head 42 and the center hole of the bearing of the automotive electronic water pump are in a tight fit.

[0037] The positioning mechanism housing 12 of the present invention is fixedly installed on the workbench 1, and both the first telescopic cylinder 2 and the servo motor 3 are located inside the positioning mechanism housing 12.

[0038] The grooving mechanism of the present invention includes a second telescopic cylinder 5 installed on the workbench 1 and a grooving tool 6 installed on the telescopic rod of the second telescopic cylinder 5. The positioning pin 4 is inserted into the central hole of the automotive electronic water pump bearing, and the grooving tool 6 is directly opposite to the automotive electronic water pump bearing inserted on the positioning pin 4.

[0039] The jacket mechanism of the present invention is installed on the workbench 1 for sleeving on the grooving tool 6 and cooperating with the positioning pin 4 to clamp the automotive electronic water pump bearing. The jacket mechanism includes a grooving tool sleeve 7 sleeved on the grooving tool 6 and a clamping column 8 with one end connected to the grooving tool sleeve 7 for cooperating with the positioning pin 4 to clamp the automotive electronic water pump bearing. At least one grooving tool guiding groove 10 cooperating with the grooving tool 6 is provided on the clamping column 8. The outer end of the clamping column 8 is provided with a socket groove 9 directly opposite to the positioning pin 4 and used for sleeving the automotive electronic water pump bearing. The socket groove 9 and the automotive electronic water pump bearing are in clearance fit.

[0040] The housing 11 of the grooving mechanism of the present invention is installed on the workbench 1. The second telescopic cylinder 5 and the grooving tool 6 are located inside the housing 11 of the grooving mechanism, and the grooving tool sleeve 7 is fixedly installed on the housing 11 of the grooving mechanism.

[0041] The present invention mainly includes a positioning mechanism, a grooving mechanism, and a jacket mechanism. The positioning mechanism includes a first telescopic cylinder, a servo motor, and a positioning pin. The first telescopic cylinder and the servo motor are installed inside the housing of the positioning mechanism. The positioning pin is composed of a needle base and a needle head with an integral structure. The servo motor is installed on the telescopic rod of the first telescopic cylinder. The telescopic rods are horizontally distributed. The needle base is fixedly installed on the rotary drive shaft of the servo motor. Both the needle base and the needle head are cylindrical and are symmetrically horizontally distributed. The first telescopic cylinder can drive the positioning pin installed on the servo motor to reciprocate horizontally. The servo motor can drive the positioning pin to accurately rotate along its axis. The automotive electronic water pump bearing is inserted through the needle head through its central hole. The needle head and the central hole are in interference fit to prevent the water pump bearing from slipping and rotating on the needle head. The diameter of the needle base is larger than the central hole of the bearing to play a limiting role.

[0042] The grooving mechanism and the jacket mechanism of the present invention cooperate in operation. The grooving mechanism includes a second telescopic cylinder and a grooving tool installed inside the housing of the grooving mechanism. The grooving tool is installed on the second telescopic cylinder. The second telescopic cylinder is horizontally distributed and can drive the grooving tool to reciprocate in the horizontal direction. The jacket mechanism includes a grooving tool sleeve and a clamping column. The grooving tool sleeve is installed on the housing of the grooving mechanism, covering the grooving operation section of the grooving tool, playing a protective role. At the same time, the stepped surface where the grooving tool sleeve is connected to the clamping column can also play a limiting role. This stepped surface is the maximum stroke for the grooving tool to extend outwards for grooving. The front end of the clamping column is provided with a socket groove, which cooperates with the bearing of the automotive electronic water pump. The inner side wall of the socket groove and the outer side wall of the bearing of the automotive electronic water pump are in clearance fit, facilitating the insertion of the bearing of the automotive electronic water pump into the socket groove. At least one grooving tool guiding groove is opened on the clamping column. When the grooving tool runs outwards under the action of the second telescopic cylinder, it enters the grooving tool guiding groove and continues to advance into the socket groove to perform grooving operations on the water pump bearing clamped in the socket groove. The socket groove is directly opposite to the water pump bearing sleeved on the needle head. When the water pump bearing runs towards the clamping column under the action of the first telescopic cylinder, it just fits into the socket groove. The water pump bearing is clamped in the socket groove by the positioning needle, with good stability, facilitating the grooving of the grooving tool and also conducive to ensuring the grooving accuracy.

[0043] When the present invention is in use, the bearing of the automotive electronic water pump is sleeved on the needle head of the positioning needle. The first telescopic cylinder is turned on to make the water pump bearing run towards the socket groove of the clamping column. When the water pump bearing is inserted into the socket groove and fixed by the combined action of the positioning needle and the clamping column, the grooving tool and the second telescopic cylinder are turned on simultaneously. The grooving tool enters the socket groove along the grooving tool guiding groove to groove the water pump bearing. After one groove is completed, the grooving tool is retracted, the servo motor is started, the water pump bearing is driven to rotate a certain angle (45°), and then the servo motor is turned off. The grooving tool is started again to enter the socket groove to groove the second groove of the water pump bearing. By circulating in this way, eight grooves can be grooved on the water pump bearing as required. It has high grooving efficiency, high grooving accuracy, and high grooving yield rate, can be applied to large-scale mass production, and can also effectively reduce the defective rate and save the manufacturing cost of the water pump bearing.

[0044] Finally, it should be noted that the above embodiments are only preferred embodiments of the present invention to illustrate the technical solutions of the present invention, rather than limiting it, and certainly not limiting the patent scope of the present invention; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention; that is to say, any meaningless changes or polish made in the main design concept and spirit of the present invention, as long as the technical problems solved are still consistent with the present invention, should be included in the protection scope of the present invention; in addition, directly or indirectly applying the technical solutions of the present invention to other related technical fields shall also be included in the patent protection scope of the present invention by the same token.

Claims

1. An automotive electronic vacuum pump rotor grooving device, characterized in that: It includes a workbench (1), a positioning mechanism and a grooving mechanism. The positioning mechanism includes a first telescopic cylinder (2) installed on the workbench (1), a servo motor (3) installed on the telescopic rod of the first telescopic cylinder (2), and a positioning pin (4) installed on the rotary drive shaft of the servo motor (3) and mating with the central hole of the automotive electronic water pump bearing. The grooving mechanism includes a second telescopic cylinder (5) installed on the workbench (1), and a grooving tool (6) installed on the telescopic rod of the second telescopic cylinder (5). The positioning pin (4) passes through the central hole of the automotive electronic water pump bearing, and the grooving tool (6) is directly opposite to the automotive electronic water pump bearing passing through the positioning pin (4); It also includes a collet mechanism installed on the workbench (1) for sleeving on the grooving tool (6) and cooperating with the positioning pin (4) to clamp the automotive electronic water pump bearing. The collet mechanism includes a grooving tool sleeve (7) sleeved on the grooving tool (6), and a clamping column (8) with one end connected to the grooving tool sleeve (7) for cooperating with the positioning pin (4) to clamp the automotive electronic water pump bearing. At least one grooving tool guiding groove (10) cooperating with the grooving tool (6) is provided on the clamping column (8). An outer socket groove (9) directly opposite to the positioning pin (4) and used for sleeving the automotive electronic water pump bearing is provided at the outer end of the clamping column (8). The socket groove (9) has a clearance fit with the automotive electronic water pump bearing; The positioning pin (4) includes a pin base (41) installed on the rotary drive shaft of the servo motor (3), and a pin head (42) provided on the pin base (41). The central hole of the automotive electronic water pump bearing passes through the pin head (42). The pin base (41) is cylindrical in shape, and its diameter is larger than the diameter of the central hole of the automotive electronic water pump bearing. The pin head (42) has an interference fit with the central hole of the automotive electronic water pump bearing.

2. The automotive electronic vacuum pump rotor grooving device according to claim 1, characterized in that: It also includes a grooving mechanism housing (11) installed on the workbench (1). The second telescopic cylinder (5) and the grooving tool (6) are located inside the grooving mechanism housing (11), and the grooving tool sleeve (7) is fixedly installed on the grooving mechanism housing (11).

3. The automotive electronic vacuum pump rotor grooving device according to claim 1, characterized in that: It also includes a positioning mechanism housing (12) installed on the workbench (1). The first telescopic cylinder (2) and the servo motor (3) are both located inside the positioning mechanism housing (12).

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