A blind hole drilling device for a vacuum pump shaft

Abstract

The present invention relates to the field of vacuum pump devices, and in particular to a vacuum pump shaft blind hole drilling device, comprising a base plate and a pump shaft, wherein a slide plate is provided on one side of the upper end of the base plate, a support block is fixed on the slide plate, a support plate is fixed on the other side of the upper end of the base plate, a gripping cylinder is fixed on one side of the support plate, a push plate is fixed at the end of the piston rod of the gripping cylinder, a plurality of clamping claw mechanisms are fixed on the push plate, the clamping claw mechanism comprises a connecting shaft fixed on the push plate, a push rod rotatably connected to the connecting shaft is provided on the connecting shaft, a slide groove through which the push rod passes is provided at a position corresponding to the push rod on the support plate, a support shaft is also fixed at the end of the push rod, and a positioning rod rotatably connected to the support shaft is provided on the support shaft. The pump shaft is fixed from the main oil circuit in the pump shaft by a fixing block, and the pump shaft is gripped and fixed from the outside of the pump shaft by a positioning rod of a labor-saving lever structure, so that the pump shaft can be effectively completely fixed.

Description

[Technical field]

[0001] The invention relates to the field of vacuum pump devices, in particular to a vacuum pump shaft blind hole drilling device. [Background technology]

[0002] A vacuum pump is a device or equipment that uses mechanical, physical, chemical or physicochemical methods to evacuate the container to obtain a vacuum. Generally speaking, a vacuum pump is a device that uses various methods to improve, generate and maintain a vacuum in a closed space. According to the working principle of the vacuum pump, the vacuum pump can basically be divided into two types, namely, gas capture pumps and gas transmission pumps. It is widely used in metallurgy, chemical industry, food, electronic coating and other industries.

[0003] Refrigerant oil is stored at the bottom of the closed shell of the vacuum pump, and a main oil circuit that runs through the pump shaft is provided. During the operation of the vacuum pump, the refrigerant oil passes through the main oil circuit in the pump shaft and the blind holes connected to the main oil circuit to reach the positions of various components in the vacuum pump, so as to achieve the purpose of lubricating the components. The starting performance and life of the vacuum pump are closely related to the lubrication effect. The more sufficient the lubrication, the easier it is to start the vacuum pump and the longer the life of the vacuum pump. When the pump shaft is produced, a blind hole is drilled on the pump shaft through a drilling device. In order to facilitate the discharge of refrigerant oil from each blind hole and the top of the main oil circuit, the size of the blind hole is required to be small, that is, a blind hole is drilled on the pump shaft through an ultra-fine drill bit. The pump shaft is generally fixed by the piston rod of the cylinder extending through the fixing block at the end of the piston rod. Simply fixing it with the cylinder cannot ensure that the pump shaft is fully grasped. When the high-speed rotating ultra-fine drill bit contacts the pump shaft, the pump shaft is prone to vibration because the pump shaft is not completely fixed. The vibration of the pump shaft is likely to cause the ultra-fine drill bit to break, seriously affecting the processing efficiency of the pump shaft.

[0004] The present invention is proposed in view of the deficiencies in the prior art. [Summary of the invention]

[0005] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art and provide a vacuum pump shaft blind hole drilling device.

[0006] The present invention can be implemented by the following technical solutions:

[0007] The invention discloses a blind hole drilling device for a vacuum pump shaft, comprising a base plate and a pump shaft, wherein a slide plate is provided on one side of the upper end of the base plate, a support block is fixed on the slide plate, and a support plate is fixed on the other side of the upper end of the base plate, a gripping cylinder is fixed on one side of the support plate, a push plate is fixed on the end of the piston rod of the gripping cylinder, a plurality of clamping claw mechanisms are fixed on the push plate, the clamping claw mechanism comprises a connecting shaft fixed to the push plate, a push rod rotatably connected to the connecting shaft is provided on the connecting shaft, a sliding groove through which the push rod passes is provided at a position corresponding to the push rod on the support plate, a support shaft is also fixed to the end of the push rod, a positioning rod rotatably connected to the support shaft is provided on the support shaft, a positioning shaft is also fixed on the support plate, the positioning shaft passes through the positioning rod and is rotatably connected to the positioning rod, a lifting ring is also fixed on the support plate, a plurality of fixing blocks rotatably connected to the lifting ring are evenly provided on the lifting ring, and a support ring at the middle position of the lifting ring The cam is provided with a plurality of sliding rods, and the sliding rod is provided with a vertical shaft, and the sliding rod passes through the sliding plate and is threadedly connected to the sliding plate. The sliding plate is fixed with a vertical shaft, and a drilling motor is fixed on the sliding plate. A drill bit is fixed on the output end of the drilling motor. A limiting block is also fixed on the sliding plate on one side of the pump shaft, and a limiting plate assembled with the limiting block is provided on the other side of the pump shaft. A supporting tube is fixed on the limiting plate, and a positioning tube is fixed on the sliding plate. The positioning tube is arranged around the drill bit, and the positioning tube is slidably connected to the supporting tube.When the pump shaft is fixed, one end of the pump shaft is placed in the fixing groove of the support block, the other end of the pump shaft is placed between the positioning rods, and the ends of the fixing blocks are placed in the main oil circuit of the pump shaft. The gripping cylinder is started, the piston rod on the gripping cylinder is extended, the push plate moves close to the support plate, and the push plate pushes the fixing plate to move through the fixing spring. The fixed shaft on the fixing plate moves with the fixing plate, and the end of the fixed shaft is inserted between the fixing blocks and pushes the fixing blocks to rotate outward. The fixed shaft pushes the fixing blocks to continue to rotate. The ends of the fixing blocks are all in contact with the inner wall of the main oil circuit of the pump shaft and then squeezed against the pump shaft. The pump shaft is fixed, and when the push plate moves, the connecting shaft pushes the positioning rod to rotate around the positioning shaft through the push rod. The positioning groove at the end of the positioning rod contacts the outer wall of the pump shaft to fix the pump shaft, and because the distance between the positioning shaft and the positioning groove is much smaller than the distance between the positioning shaft and the support shaft, that is, the positioning rod forms a labor-saving lever, the pump shaft is completely fixed between the positioning rods. After the pump shaft is fixed, the screw rod is driven to rotate by the translation motor, and the slide moves in the direction of the screw rod. After the drill bit on the table reaches the specified position, the screw stops and the transverse motor drives the threaded tube to rotate. Since the screw is threadedly connected to the threaded tube, when the threaded tube rotates, the slider moves, and the high-speed rotating drill bit moves close to the pump shaft. After the positioning tube is inserted into the support tube, the drill bit continues to move. After the drill bit contacts the pump shaft, a blind hole operation is performed on the pump shaft. After the blind hole is completed, the transverse motor drives the threaded tube to rotate in the opposite direction, the drill bit is separated from the pump shaft, and the translation motor drives the screw to rotate again. The drill bit reaches the next blind hole position to be drilled, and the cycle operation is repeated. The pump shaft is fixed from the main oil circuit in the pump shaft through the fixing block, and the pump shaft is grabbed and fixed from the outside of the pump shaft through the positioning rod of the labor-saving lever structure, which can effectively fix the pump shaft completely to avoid vibration of the pump shaft during drilling. When drilling, the pump shaft at the drilling position is fixed by combining the limit block and the limit plate, further avoiding vibration of the pump shaft during drilling, and when drilling, the positioning tube is inserted into the support tube to position the positioning tube, thereby avoiding vibration of the slider, further avoiding vibration of the drill bit, and avoiding breakage of the drill bit during drilling.

[0008] Preferably, a plurality of slide rails are fixed on the bottom plate below the slide plate, the slide plate is slidably connected to the slide rails, a nut is also fixed on the slide plate, and a bolt threadedly connected to the nut is arranged on the nut. When the pump shaft is fixed, after placing one end of the pump shaft on the support block on the slide plate, the slide plate is pushed to move by the handle, and after the end of the fixing block is inserted into the main oil circuit, the bolt is turned, and since the bolt is threadedly connected to the nut, the bottom of the bolt is squeezed with the bottom plate to fix the slide plate.

[0009] Preferably, an arc-shaped positioning groove is provided at the end of the positioning rod.

[0010] Preferably, a positioning ring is further provided on one side of the support plate, the fixing block passes through the inside of the positioning ring, and a plurality of tie rods are fixed on the positioning ring, the tie rods pass through the support plate and are slidably connected to the support plate, and the ends of the tie rods are all fixed on the tie plate. When the pump shaft is fixed, the positioning ring is pulled, and since the fixing blocks all pass through the positioning ring, when the positioning ring is pulled, the fixing blocks close together, and after the fixing blocks close together, the pump shaft is moved, which makes it easier to insert the fixing blocks into the main oil circuit.

[0011] Preferably, a plurality of connecting rods are evenly fixed on the limit plate, the connecting rods pass through the slider and are slidably connected to the slider, a positioning spring is also fixed between the limit plate and the slider, a plurality of limit rods are also fixed on the limit plate, and the limit block is provided with limit holes for the limit rods to pass through at positions corresponding to the limit rods. When the limit plate moves with the slider, the limit rods on the limit plate pass through the limit holes, and the limit plate is assembled with the limit block after being positioned.

[0012] Preferably, a support rod is fixed on the slider, and the support rod passes through the vertical plate and is slidably connected to the vertical plate. A screw is also fixed on the slider, and a threaded tube is provided on the vertical plate and is rotatably connected to the vertical plate. The screw passes through the threaded tube and is threadedly connected to the threaded tube. A driving wheel is fixed to the output end of the transverse motor, and the driving wheel is connected to the aforementioned threaded tube through a synchronous belt.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] The pump shaft is fixed from the main oil circuit in the pump shaft through a fixing block, and the pump shaft is grabbed and fixed from the outside of the pump shaft through a positioning rod of a labor-saving lever structure, which can effectively fix the pump shaft completely to avoid vibration of the pump shaft during drilling. When drilling, the pump shaft at the drilling position is fixed by combining the limit block and the limit plate to further avoid vibration of the pump shaft during drilling. When drilling, the positioning tube is inserted into the support tube to position the positioning tube, thereby avoiding vibration of the slider, further avoiding vibration of the drill bit, and avoiding breakage of the drill bit during drilling.

Brief Description of the Drawings

[0015] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0016] Figure 1 It is a structural schematic diagram of the present invention;

[0017] Figure 2 It is a front view of the present invention;

[0018] Figure 3 for Figure 2 Sectional view at AA;

[0019] Figure 4 for Figure 1 Enlarged view of point B in the middle;

[0020] Figure 5 for Figure 1 Enlarged view of point C in the middle;

[0021] Figure 6 for Figure 3 Enlarged view of point D in the middle;

[0022] Figure 7 for Figure 3 Enlarged view of point E in the middle;

[0023] In the figure: 1, pump shaft; 2, bottom plate; 3, slide plate; 4, slide rail; 5, support block; 6, handle; 7, bolt; 8, nut; 9, support plate; 10, grip cylinder; 11, push plate; 12, clamping claw mechanism; 13, connecting shaft; 14, push rod; 15, slide groove; 16, support shaft; 17, positioning shaft; 18, positioning rod; 19, positioning groove; 20, positioning ring; 21, pull rod; 22, pull plate; 23, lifting ring; 24, fixing block; 25, fixing shaft; 26, fixing Fixed plate; 27, fixed spring; 28, slide rod; 29, screw rod; 30, translation motor; 31, slide; 32, limit block; 33, vertical plate; 34, slider; 35, screw rod; 36, transverse motor; 37, driving wheel; 38, threaded pipe; 39, synchronous belt; 40, drilling motor; 41, drill bit; 42, support rod; 43, limit plate; 44, limit rod; 45, support pipe; 46, connecting rod; 47, positioning pipe; 48, positioning spring; 49, main oil circuit; [Specific implementation method]

[0024] The embodiments of the present invention are described in detail below with reference to the accompanying drawings:

[0025] like Figures 1 to 7As shown, the present invention discloses a vacuum pump shaft blind hole drilling device, including a base plate 2 and a pump shaft 1, a slide plate 3 is arranged on one side of the upper end of the base plate 2, a support block 5 is fixed on the slide plate 3, a support plate 9 is fixed on the other side of the upper end of the base plate 2, a gripping cylinder 10 is fixed on one side of the support plate 9, a push plate 11 is fixed on the end of the piston rod of the gripping cylinder 10, a plurality of clamping claw mechanisms 12 are fixed on the push plate 11, the clamping claw mechanism 12 includes a connecting shaft 13 fixed on the push plate 11, and a connecting shaft 13 is provided on the connecting shaft 13 for rotationally connecting with the connecting shaft 13 A push rod 14 is provided on the support plate 9 at a position corresponding to the push rod 14, through which the push rod 14 passes. A support shaft 16 is also fixed to the end of the push rod 14, and a positioning rod 18 is provided on the support shaft 16 and is rotatably connected to the support shaft 16. A positioning shaft 17 is also fixed to the support plate 9, and the positioning shaft 17 passes through the positioning rod 18 and is rotatably connected to the positioning rod 18. A lifting ring 23 is also fixed to the support plate 9, and a plurality of fixing blocks 24 rotatably connected to the lifting ring 23 are evenly provided on the lifting ring 23. The support plate 9 at the middle position of the lifting ring 23 is also provided with a fixing block 24. A fixed shaft 25 is provided, the fixed shaft 25 passes through the support plate 9 and is slidably connected to the support plate 9, a fixed plate 26 is also fixed on the fixed shaft 25, a fixed spring 27 is also fixed between the fixed plate 26 and the push plate 11, a screw rod 29 and a plurality of slide rods 28 are also provided above the bottom plate 2, the screw rod 29 is driven to rotate by a translation motor 30, a slide table 31 is also provided above the bottom plate 2, the screw rod 29 passes through the slide table 31 and is threadedly connected to the slide table 31, the slide rod 28 passes through the slide table 31 and is slidably connected to the slide table 31, and a vertical Plate 33, a slider 34 is provided on one side of the vertical plate 33, the slider 34 is driven to move by the transverse motor 36, a drilling motor 40 is fixed on the slider 34, a drill bit 41 is fixed on the output end of the drilling motor 40, a limit block 32 is also fixed on the slide 31 on one side of the pump shaft 1, a limit plate 43 assembled with the limit block 32 is provided on the other side of the pump shaft 1, a support tube 45 is fixed on the limit plate 43, a positioning tube 47 is also fixed on the slider 34, the positioning tube 47 is arranged around the drill bit 41, and the positioning tube 47 is slidably connected with the support tube 45.When the pump shaft 1 is fixed, one end of the pump shaft 1 is placed in the fixing groove of the support block 5, and the other end of the pump shaft 1 is placed between the positioning rods 18, and the ends of the fixing blocks 24 are placed in the main oil path 49 of the pump shaft 1, the gripping cylinder 10 is started, the piston rod on the gripping cylinder 10 is extended, and the push plate 11 moves close to the support plate 9, and the push plate 11 pushes the fixing plate 26 to move through the fixing spring 27, and the fixing shaft 25 on the fixing plate 26 moves with the fixing plate 26, and the ends of the fixing shaft 25 are inserted between the fixing blocks 24 and push the fixing blocks 24 to rotate outward, and the fixing shaft 25 pushes the fixing blocks 24 to continue to rotate, and the fixing blocks 24 The ends of the pump shaft 1 are in contact with the inner wall of the main oil passage 49 of the pump shaft 1 and then squeezed with the pump shaft 1. The pump shaft 1 is fixed. When the push plate 11 moves, the connecting shaft 13 pushes the positioning rod 18 to rotate around the positioning shaft 17 through the push rod 14. The positioning groove 19 at the end of the positioning rod 18 contacts the outer wall of the pump shaft 1 to fix the pump shaft 1. Since the distance between the positioning shaft 17 and the positioning groove 19 is much smaller than the distance between the positioning shaft 17 and the supporting shaft 16, the positioning rod 18 forms a labor-saving lever, and the pump shaft 1 is completely fixed between the positioning rods 18. After the pump shaft 1 is fixed, the screw rod 29 is driven to rotate by the translation motor 30, and the slide 31 moves in the direction of the screw rod 29. After the drill bit 41 on the slide 31 moves upward and reaches the specified position, the screw 29 stops, and the traverse motor 36 drives the threaded tube 38 to rotate. Since the screw 35 is threadedly connected with the threaded tube 38, when the threaded tube 38 rotates, the slide 34 moves, and the high-speed rotating drill bit 41 moves close to the pump shaft 1. After the positioning tube 47 is inserted into the support tube 45, the drill bit 41 continues to move. After the drill bit 41 contacts the pump shaft 1, a blind hole operation is performed on the pump shaft 1. After the blind hole is completed, the traverse motor 36 drives the threaded tube 38 to rotate in the opposite direction, and the drill bit 41 is separated from the pump shaft 1. The translation motor 30 drives the screw 29 to rotate again, and the drill bit 41 reaches the next The pump shaft 1 is fixed from the main oil passage 49 in the pump shaft 1 by the fixing block 24, and the pump shaft 1 is grabbed and fixed from the outside of the pump shaft 1 by the positioning rod 18 of the labor-saving lever structure, so that the pump shaft 1 can be effectively fixed completely to avoid the vibration of the pump shaft 1 during drilling. When drilling, the pump shaft 1 at the drilling position is fixed by combining the limit block 32 with the limit plate 43 to further avoid the vibration of the pump shaft 1 during drilling. When drilling, the positioning tube 47 is inserted into the support tube 45 to realize the positioning of the positioning tube 47, thereby avoiding the vibration of the slider 34, further avoiding the vibration of the drill bit 41, and avoiding the breakage of the drill bit 41 during drilling.

[0026] Among them, a plurality of slide rails 4 are fixed on the bottom plate 2 below the slide plate 3, and the slide plate 3 is slidably connected with the slide rails 4. A nut 8 is also fixed on the slide plate 3, and a bolt 7 threadedly connected with the nut 8 is arranged on the nut 8. When the pump shaft 1 is fixed, after placing one end of the pump shaft 1 on the support block 5 on the slide plate 3, the slide plate 3 is pushed to move by the handle 6, and after the end of the fixing block 24 is inserted into the main oil circuit 49, the bolt 7 is turned. Since the bolt 7 is threadedly connected with the nut 8, the bottom of the bolt 7 is squeezed with the bottom plate 2 to fix the slide plate 3.

[0027] Among them, an arc-shaped positioning groove 19 is arranged at the end of the positioning rod 18 .

[0028] Among them, a positioning ring 20 is also provided on one side of the support plate 9, and a fixing block 24 passes through the inside of the positioning ring 20. A plurality of tie rods 21 are also fixed on the positioning ring 20. The tie rods 21 pass through the support plate 9 and are slidably connected with the support plate 9, and the ends of the tie rods 21 are all fixed on the tie plate 22. When the pump shaft 1 is fixed, the positioning ring 20 is pulled. Since the fixing blocks 24 all pass through the positioning ring 20, when the positioning ring 20 is pulled, the fixing blocks 24 close together. After the fixing blocks 24 close together, the pump shaft 1 is moved, which makes it more convenient for the fixing blocks 24 to be inserted into the main oil circuit 49.

[0029] Among them, a plurality of connecting rods 46 are evenly fixed on the limit plate 43, and the connecting rods 46 pass through the slider 34 and are slidably connected to the slider 34. A positioning spring 48 is also fixed between the limit plate 43 and the slider 34. A plurality of limit rods 44 are also fixed on the limit plate 43, and the limit block 32 is provided with limit holes for the limit rods 44 to pass through at positions corresponding to the limit rods 44. When the limit plate 43 moves with the slider 34, the upper limit rods 44 on the limit plate 43 pass through the respective limit holes, so that the limit plate 43 is positioned and assembled with the limit block 32.

[0030] Among them, a support rod 42 is fixed on the slider 34, the support rod 42 passes through the vertical plate 33 and is slidably connected to the vertical plate 33, a screw rod 35 is also fixed on the slider 34, a threaded tube 38 rotatably connected to the vertical plate 33 is provided on the vertical plate 33, the screw rod 35 passes through the threaded tube 38 and is threadedly connected to the threaded tube 38, a driving wheel 37 is fixed to the output end of the transverse motor 36, and the driving wheel 37 is connected to the threaded tube 38 by a synchronous belt 39.

[0031] The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, various changes, modifications, substitutions and variations can be made to these embodiments without departing from the technical principles of the present invention. These changes, modifications, substitutions and variations should also be regarded as the scope of protection of the present invention.

Claims

1. A vacuum pump shaft blind hole drilling device, comprising a base plate and a pump shaft, characterized in that: A slide plate is provided at one side of the upper end of the base plate, a support block is fixed on the slide plate, a support plate is fixed on the other side of the upper end of the base plate, a gripping cylinder is fixed on one side of the support plate, a push plate is fixed at the end of the piston rod of the gripping cylinder, a plurality of clamping claw mechanisms are fixed on the push plate, the clamping claw mechanism includes a connecting shaft fixed to the push plate, a push rod rotatably connected to the connecting shaft is provided on the connecting shaft, a slide groove is provided on the support plate corresponding to the push rod, and the push rod passes through a slide groove, and a support shaft is also fixed at the end of the push rod, and a support shaft is provided on the support shaft, and a push rod rotatably connected to the support shaft is provided on the support shaft. A positioning rod, a positioning shaft is also fixed on the support plate, the positioning shaft passes through the positioning rod and is rotatably connected to the positioning rod, a lifting ring is also fixed on the support plate, and a plurality of fixing blocks rotatably connected to the lifting ring are evenly arranged on the lifting ring, a positioning ring is also provided on one side of the support plate, the fixing block passes through the inside of the positioning ring, a plurality of pull rods are also fixed on the positioning ring, the pull rods pass through the support plate and are slidably connected to the support plate, the ends of the pull rods are all fixed on the pull plate, a fixed shaft is also provided on the support plate at the middle position of the lifting ring, and the fixed shaft passes through the support plate and is rotatably connected to the support plate The sliding connection, a fixed plate is also fixed on the fixed shaft, a fixed spring is also fixed between the fixed plate and the push plate, a screw rod and multiple sliding rods are also arranged above the bottom plate, the screw rod is driven to rotate by a translation motor, a slide table is also arranged above the bottom plate, the screw rod passes through the slide table and is threadedly connected to the slide table, the sliding rod passes through the slide table and is slidingly connected to the slide table, a vertical plate is fixed on the slide table, a sliding block is arranged on one side of the vertical plate, the sliding block is driven to move by a transverse motor, a drilling motor is fixed on the sliding block, a drill bit is fixed on the output end of the drilling motor, and the pump shaft is fixed on the bottom plate. A limit block is also fixed on the slide table on the side, and a limit plate assembled with the limit block is provided on the other side of the pump shaft. A support tube is fixed on the limit plate, and a positioning tube is fixed on the slider. The positioning tube is arranged around the drill bit, and the positioning tube is slidably connected to the support tube. A plurality of connecting rods are evenly fixed on the limit plate, and the connecting rods pass through the slider and are slidably connected to the slider. A positioning spring is also fixed between the limit plate and the slider, and a plurality of limit rods are fixed on the limit plate. Limit holes for the limit rods to pass through are provided at positions corresponding to the limit rods on the limit block.

2. The vacuum pump shaft blind hole drilling device according to claim 1, characterized in that: A plurality of slide rails are fixed on the bottom plate below the slide plate, the slide plate is slidably connected to the slide rails, a nut is also fixed on the slide plate, and a bolt threadably connected to the nut is arranged on the nut.

3. The vacuum pump shaft blind hole drilling device according to claim 1, characterized in that: An arc-shaped positioning groove is arranged at the end of the positioning rod.

4. The vacuum pump shaft blind hole drilling device according to claim 1, characterized in that: A support rod is fixed on the slider, and the support rod passes through the vertical plate and is slidably connected to the vertical plate. A screw is also fixed on the slider, and a threaded tube is provided on the vertical plate and is rotatably connected to the vertical plate. The screw passes through the threaded tube and is threadedly connected to the threaded tube. A driving wheel is fixed to the output end of the transverse motor, and the driving wheel is connected to the aforementioned threaded tube through a synchronous belt.

Images