Boring fixture for automobile steering gear housing arm hole

Abstract

The application discloses a kind of automobile steering gear shell arm hole boring clamps, belong to the technical field of steering gear production, the cutting chip that enters first separation cavity is retained by the sieve plate located at the bottom of first separation cavity, while cooling liquid passes through sieve plate, the rate of cooling liquid passing through sieve plate is accelerated under the driving of negative pressure airflow in shell, the effect of improving filtration flux is achieved, cooling liquid is discharged through the cooling liquid pipe arranged at the bottom of shell, the separation of cutting chip and cooling liquid is realized, volatile gas enters first standby cavity after entering first separation cavity, through the sieve plate located on the sidewall of first separation cavity, after flowing into second separation cavity, it is filtered by filter element, filtered gas is discharged through the waste gas pipe arranged on shell, so as to realize the effect of filtering a small amount of harmful gas or particulate matter accompanied by the machining process, reduce the risk of causing occupational disease, achieve the effect of separating and classifying the cutting chip, volatile gas and cooling liquid generated in the machining process.

Description

Technical Field

[0001] This invention relates to the field of steering gear manufacturing technology, and in particular to a boring fixture for the arm hole of an automotive steering gear housing. Background Technology

[0002] In the automotive manufacturing and repair industry, the machining quality of the steering gear housing arm hole is directly related to the overall performance and safety of the vehicle. To meet the high-precision machining requirements, steering gear housing arm hole boring fixtures are widely used. They employ specialized positioning and fixing methods to ensure the positional accuracy of the steering gear housing during the machining process, thereby guaranteeing the high-precision requirements of the arm hole machining. Existing boring fixtures typically consist of components such as a base, a fixed plate, a moving plate, a positioning column, a guide rod, and an auxiliary ring. By rationally planning the chip flow direction and cooperating with a vacuum chip suction device, the chips are guided to exit from a predetermined path inside the steering gear housing, effectively preventing chip accumulation. However, during the cutting process, coolant is usually used to reduce the temperature of the cutting tool and workpiece, reduce friction, improve machining accuracy, and extend tool life. During the circulation process, the coolant mixes with the chips and enters the vacuum chip suction device together. The debris and sludge formed after the chips and coolant mix can clog the filtration system of the vacuum chip suction device, resulting in a decrease in suction power and the need for frequent machine shutdowns for cleaning, which affects the continuity of machining. In addition, the coolant evaporates under the high temperature generated by the friction between the cutting tool and the workpiece, producing trace amounts of oil mist or volatile organic compounds, forming aerosols or irritating odors, which have a certain impact on the subsequent recycling and treatment of chips and the health of the workers. Summary of the Invention

[0003] The purpose of this invention is to solve the problem that during the circulation process, coolant mixes with chips and enters the vacuum chip suction device together. The resulting debris and sludge from the mixture of chips and coolant clogs the filtration system of the vacuum chip suction device, leading to a decrease in suction power, requiring frequent shutdowns for cleaning, and affecting the continuity of processing. Therefore, this invention proposes a boring fixture for the arm hole of an automotive steering gear housing.

[0004] To achieve the above objectives, the present invention employs the following technology: a boring fixture for an automotive steering gear housing arm hole. The device includes a clamp body and a steering gear housing clamped and fixed on the clamp body. The steering gear housing has a cylinder bore. A separation mechanism is installed at the bottom of the clamp body. The separation mechanism includes a housing set on the clamp body. A connecting pipe inserted into the cylinder bore is provided at the top of the housing. A suction force is generated at the connecting pipe to draw the chips, volatile gases and coolant generated during boring of the steering gear housing into the housing. The housing is rotatably provided with a solid-liquid separation chamber that is connected to the coolant pipe. The solid-liquid separation chamber includes a first separation chamber and at least one first standby chamber. The first separation chamber and the first standby chamber are connected by a sieve plate. The chips entering the first separation chamber are intercepted and retained by the sieve plate, and the coolant passes through the sieve plate and is discharged through the coolant pipe provided at the bottom of the housing. The housing is rotatably provided with a solid-gas separation chamber, which includes a second separation chamber that is connected to the first standby chamber. A filter element is installed in the second separation chamber. The volatile gas entering the first separation chamber enters the first standby chamber through the sieve plate, flows into the second separation chamber, and is filtered by the filter element. The filtered gas is discharged through the exhaust pipe provided on the housing. A shovel is slidably disposed in the first separation chamber and the first standby chamber. Rotating the solid-liquid separation chamber connects the first separation chamber with the second separation chamber. Then, the shovel moves back and forth to push the chips in the first separation chamber into the second separation chamber. The first standby chamber takes over from the first separation chamber to separate the chips and coolant.

[0005] Further description of a boring fixture for an automotive steering gear housing arm hole, as described above: The inner wall of the housing is provided with a retainer. One end of the solid-liquid separation chamber and the solid-gas separation chamber are respectively rotatably embedded on one side of the retainer. The surface of the retainer is provided with through holes corresponding to the positions of the first standby chamber and the second separation chamber. The material shovel can pass through the through holes and be inserted into the second separation chamber.

[0006] Further description of a boring fixture for an automotive steering gear housing arm hole, as described above: The filter element is provided with a mounting base at its end. The housing and the solid-gas separation chamber are provided with slots that match the mounting base. The housing is also provided with a sealing plate to block the slots.

[0007] Further description of a boring fixture for an automotive steering gear housing arm hole, as described above: A servo motor is installed on the fixture body, and the output end of the servo motor passes through the housing and is connected to the solid-liquid separation chamber. The solid-liquid separation chamber is rotatably connected to the solid-gas separation chamber via a switching mechanism. The switching mechanism includes an installation groove installed on the solid-gas separation chamber. A first connecting shaft connected to the solid-liquid separation chamber is rotatably embedded in the installation groove. At least one first hinge shaft is provided on the first connecting shaft, and a first hook is rotatably provided on the first hinge shaft. The mounting slot is provided with a number of first ratchet teeth that cooperate with the first pawl.

[0008] Further description of a boring fixture for an automotive steering gear housing arm hole, as described above: The solid-gas separation chamber also includes at least one second standby chamber, and each second standby chamber is equipped with a filter element; The solid-gas separation chamber is rotatably connected to the housing via a switching mechanism to switch between the second separation chamber and the second standby chamber. The switching mechanism includes a mounting groove installed on the other end of the solid-gas separation chamber, and a second connecting shaft connected to the housing is rotatably embedded in the mounting groove. At least one second hinge shaft is provided on the second connecting shaft, and a second hook is rotatably provided on the second hinge shaft. The second hook is arranged opposite to the first hook. The mounting slot is provided with several second ratchet teeth that cooperate with the second claw.

[0009] Further description of a boring fixture for an automotive steering gear housing arm hole, as described above: The shovel is provided with a fitting part, and both the first separation chamber and the first standby chamber are provided with guide rails that fit into the fitting part. The shovel is also equipped with a magnetic sheet that attracts the solid-liquid separation chamber, and a magnetic block that blocks the shovel and repels the magnetic sheet is provided at the end of the guide rail.

[0010] Further description of a boring fixture for an automotive steering gear housing arm hole, as described above: The clamp body is equipped with an electric push rod, and the housing and solid-liquid separation chamber are provided with through holes through which the output end of the power push rod passes, and the material shovel is provided with insertion holes for inserting the output end of the power push rod.

[0011] Further description of a boring fixture for an automotive steering gear housing arm hole, as described above: The coolant pipe is equipped with a sealing mechanism, which includes a ball valve installed inside the coolant pipe. An opening and closing shaft connected to the ball valve is installed through the coolant pipe, and the ball valve remains closed during the adsorption process.

[0012] Further description of a boring fixture for an automotive steering gear housing arm hole, as described above: The sealing mechanism further includes a receiving cavity disposed on the housing, in which a first gear and a second gear are rotatably disposed, and a gear belt is sleeved on the surface of the first gear and the second gear; The output shaft of the servo motor passes through the accommodating cavity and is connected to the second gear and the solid-liquid separation cavity, while the opening and closing shaft is connected to the first gear.

[0013] Further description of a boring fixture for an automotive steering gear housing arm hole, as described above: When the servo motor drives the first separation chamber to rotate to the position where it connects with the second separation chamber, the first gear drives the ball valve to rotate one revolution to complete the opening and closing.

[0014] One of the above technical solutions has the following advantages or beneficial effects: 1. Through the separation mechanism, the chips entering the first separation chamber are intercepted and retained by the sieve plate located at the bottom of the first separation chamber. At the same time, the coolant passes through the sieve plate. Driven by the negative pressure airflow in the shell, the coolant passes through the sieve plate at a faster rate, thereby increasing the filtration throughput. The coolant is discharged through the coolant pipe located at the bottom of the shell, thus separating the chips from the coolant. After the volatile gas enters the first separation chamber, it passes through the sieve plate located on the side wall of the first separation chamber and enters the first standby chamber. After flowing into the second separation chamber, it is filtered by the filter element. The filtered gas is discharged through the exhaust pipe located on the shell, thereby achieving the effect of filtering out a small amount of harmful gases or particulate matter that accompany the processing, reducing the risk of occupational diseases, and achieving the effect of separating and classifying the chips, volatile gas and coolant generated during the processing. 2. Through the switching mechanism, as the solid-liquid separation chamber rotates, the first standby chamber takes over from the first separation chamber and connects to the connecting pipe. The first standby chamber continues to perform the separation of chips and coolant, thereby achieving the effect of quickly switching between the first separation chamber and the first standby chamber without stopping the machine, and cleaning the chips left in the first separation chamber. When a certain amount of chips are stored in the second separation chamber, or when different materials are used in different holes of the steering gear housing and need to be collected separately, the solid-liquid separation chamber is rotated counterclockwise by driving the servo motor, so that the solid-liquid separation chamber and the solid-gas separation chamber rotate together. The solid-gas separation chamber can drive the mounting groove to rotate on the surface of the second connecting shaft, thereby achieving the purpose of switching the second standby chamber. Attached Figure Description

[0015] Figure 1 A first three-dimensional structural schematic diagram of a boring fixture for an automotive steering gear housing arm hole is shown; Figure 2 A second three-dimensional structural schematic diagram of a boring fixture for an automotive steering gear housing arm hole is shown; Figure 3 A three-dimensional structural schematic diagram of the separation mechanism is shown; Figure 4 A frontal cross-sectional view of the separation mechanism is shown. Figure 5 A three-dimensional structural schematic diagram of the solid-liquid separation chamber and the solid-gas separation chamber is shown; Figure 6 A three-dimensional structural schematic diagram of the solid-liquid separation chamber is shown; Figure 7 A three-dimensional structural schematic diagram of the solid-gas separation chamber is shown; Figure 8 A first three-dimensional cross-sectional structural schematic diagram of the separation mechanism and a schematic diagram of the flow direction of the volatile gas are shown; Figure 9 A second three-dimensional cross-sectional view of the separation mechanism and a schematic diagram showing the flow direction of coolant and chips are shown; Figure 10 A partial three-dimensional structural schematic diagram of the shell is shown; Figure 11 A first three-dimensional structural schematic diagram of the switching mechanism is shown; Figure 12 A schematic diagram of the second three-dimensional structure of the switching mechanism is shown; Figure 13 It shows Figure 4 Enlarged structural diagram at point A; Figure 14 It shows Figure 4 Enlarged structural diagram at point B; Figure 15 A schematic diagram of the first three-dimensional structure of the shovel is shown; Figure 16 A schematic diagram of the second three-dimensional structure of the shovel is shown; Figure 17 It shows Figure 6 Enlarged structural diagram at point D; Figure 18 It shows Figure 4 Enlarged structural diagram at point C; Figure 19 A partial three-dimensional cross-sectional structural diagram of the sealing mechanism is shown.

[0016] Legend: 11. Fixture body; 12. Steering gear housing; 121. Cylinder bore; 13. Blower; 14. Servo motor; 15. Electric actuator; 20. Separation mechanism; 21. Housing; 211. Retainer; 212. Sealing plate; 22. Connecting pipe; 23. Coolant pipe; 24. Exhaust gas pipe; 25. Solid-liquid separation chamber; 251. First separation chamber; 252. First standby chamber; 253. Guide rail; 254. Magnetic block; 26. Solid-gas separation chamber; 261. Second separation chamber; 262. Second standby chamber; 27. Sieve plate; 28. Material shovel; 281. Fitting part; 282. Insertion hole; 283. Magnetic sheet; 29. ​​Filter element; 291. Mounting base; 30. Switching mechanism; 31. Mounting slot; 32a. First connecting shaft; 33a. First hinge shaft; 34a. First pawl; 35a. First ratchet; 32b. Second connecting shaft; 33b. Second hinge shaft; 34b. Second pawl; 35b. Second ratchet; 40. Sealing mechanism; 41. Ball valve; 42. Opening and closing shaft; 43. First gear; 44. Second gear; 45. Gear belt; 46. Receiving cavity. Detailed Implementation

[0017] The following will describe in detail, with reference to the accompanying drawings of the embodiments of the present invention, a boring fixture for an automotive steering gear housing arm hole according to the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0018] To address the problem that during coolant circulation, the coolant mixes with chips and enters the vacuum chip suction device, causing debris and sludge to clog the device's filtration system, reducing suction power, requiring frequent shutdowns for cleaning, and disrupting machining continuity, this invention proposes a boring fixture for automotive steering gear housing armholes. Figure 1 - Figure 19 As shown: The system includes a clamp body 11 and a steering gear housing 12 clamped and fixed to the clamp body 11. The steering gear housing 12 has a cylinder bore 121. A separation mechanism 20 is installed at the bottom of the clamp body 11. The separation mechanism 20 includes a housing 21 mounted on the clamp body 11, and a connecting pipe 22 inserted into the cylinder bore 121 is provided at the top of the housing 21. Figure 2 As shown, a fan 13 is installed on the housing 21. By starting the fan 13, a negative pressure is created inside the housing 21, which generates suction at the connecting pipe 22. This drives the airflow to carry the chips into the housing 21. The suction intensity is adjusted by changing the magnitude of the negative pressure to achieve the purpose of adjustment according to the type of chips. At the same time, the volatile gas and coolant generated when boring the steering gear housing 12 are sucked into the housing 21 along with the chips. Preferably, in order to further improve the negative pressure strength, when boring one of the holes in the steering gear housing 12, other holes to be bored can be blocked by an elastic sealing plug (not shown in the figure). After blocking the other holes, a relatively closed space is formed inside the steering gear housing 12, which forces the vacuum suction to concentrate on the machining hole and cylinder bore 121, thereby enhancing the adsorption effect of chips, volatile gases and coolant.

[0019] In order to separate the chips, volatile gases and coolant from the intake housing 21, such as Figure 4 - Figure 6 As shown, a solid-liquid separation chamber 25, communicating with the coolant pipe 23, is rotatably disposed inside the housing 21. The solid-liquid separation chamber 25 includes a first separation chamber 251 and at least one first standby chamber 252. Preferably, three first standby chambers 252 are provided. The first separation chambers 251 and the first standby chambers 252 are connected by a sieve plate 27. Figure 8As shown, under the action of gravity, the chips entering the first separation chamber 251 are intercepted and retained by the sieve plate 27 located at the bottom of the first separation chamber 251. At the same time, the coolant passes through the sieve plate 27. Driven by the negative pressure airflow in the housing 21, the speed of the coolant passing through the sieve plate 27 is accelerated, thereby improving the filtration throughput. The coolant is discharged through the coolant pipe 23 provided at the bottom of the housing 21, thus realizing the separation of chips and coolant. At the same time, such as Figure 5 , Figure 7 and Figure 8 As shown, a solid-gas separation chamber 26 is rotatably arranged inside the housing 21. The solid-gas separation chamber 26 includes a second separation chamber 261 that communicates with the first standby chamber 252. A filter element 29 is installed in the second separation chamber 261. After the volatile gas enters the first separation chamber 251, it enters the first standby chamber 252 through the sieve plate 27 located on the side wall of the first separation chamber 251. After flowing into the second separation chamber 261, it is filtered by the filter element 29. The filtered gas is discharged through the exhaust pipe 24 provided on the housing 21. Preferably, the fan 13 is installed at the end of the exhaust pipe 24, thereby achieving the effect of filtering the small amount of harmful gases or particulate matter that accompany the processing, reducing the risk of occupational diseases. Through this design, the effect of separating and classifying the chips, volatile gas and coolant generated during the processing is achieved. Furthermore, through the multiple sieve plates 27, the chips, volatile gas and coolant are screened through the sieve plates 27 at different positions, avoiding the situation in traditional separation equipment where solid matter easily clogs the sieve holes, resulting in a decrease in the passage efficiency of liquid and gaseous substances.

[0020] To enable rapid replacement of the filtered screen plate 27 under high-load processing conditions, reducing downtime and labor costs, such as Figure 8 As shown, a material shovel 28 is slidably disposed in the first separation chamber 251 and the first standby chamber 252. By rotating the solid-liquid separation chamber 25, the first separation chamber 251 is connected to the second separation chamber 261. Preferably, a servo motor 14 is installed on the clamp body 11. The output end of the servo motor 14 passes through the housing 21 and is connected to the solid-liquid separation chamber 25. like Figure 11 and Figure 13As shown, the solid-liquid separation chamber 25 is rotatably connected to the solid-gas separation chamber 26 via a switching mechanism 30. The switching mechanism 30 includes a mounting groove 31 mounted on the solid-gas separation chamber 26. A first connecting shaft 32a connected to the solid-liquid separation chamber 25 is rotatably embedded in the mounting groove 31. At least one first hinge shaft 33a is provided on the first connecting shaft 32a, and a first hook 34a is rotatably provided on the first hinge shaft 33a. A plurality of first ratchet teeth 35a are provided in the mounting groove 31 to cooperate with the first hook 34a. Preferably, by starting... When the servo motor 14 drives the solid-liquid separation chamber 25 to rotate clockwise, the solid-liquid separation chamber 25 drives the rotation of the first connecting shaft 32a, causing the first hook 34a to rotate around the first hinge shaft 33a under the push of the inner wall of the first ratchet 35a. The torque of the first connecting shaft 32a cannot be transmitted to the first ratchet 35a. Therefore, at this time, the rotation of the solid-liquid separation chamber 25 will not drive the solid-gas separation chamber 26 to rotate together, so as to achieve the purpose of rotating the solid-liquid separation chamber 25 to switch between the first separation chamber 251 and the first standby chamber 252. Preferred, such as Figure 2 and Figure 9 As shown, the material shovel 28 moves via the electric push rod 15 mounted on the clamp body 11. The housing 21 and the solid-liquid separation chamber 25 have through holes through which the output end of the electric push rod 15 passes. The material shovel 28 has an insertion hole 282 for inserting the output end of the electric push rod 15. By activating the electric push rod 15, the output end of the electric push rod 15 passes through the through holes on the housing 21 and the solid-liquid separation chamber 25 in sequence and is inserted into the insertion hole 282, pushing the material shovel 28 to move back and forth, pushing the chips in the first separation chamber 251 into the second separation chamber 261, thus completing the collection of chips. Meanwhile, as the solid-liquid separation chamber 25 rotates, the first standby chamber 252 takes over from the first separation chamber 251 and connects to the connecting pipe 22. The first standby chamber 252 continues to perform the separation of chips and coolant, thereby achieving the effect of quickly switching between the first separation chamber 251 and the first standby chamber 252 without stopping the machine, and cleaning the chips left in the first separation chamber 251.

[0021] Preferably, in order for the shovel 28 to reciprocate in coordination with the electric actuator 15, such as Figure 15 - Figure 17As shown, the shovel 28 has a fitting part 281. Both the first separation chamber 251 and the first standby chamber 252 are equipped with guide rails 253 that fit into the fitting part 281. The shovel 28 is also equipped with a magnetic sheet 283 that attracts the solid-liquid separation chamber 25. The end of the guide rail 253 is equipped with a magnetic block 254 that blocks the shovel 28 and repels the magnetic sheet 283. Through this design, when the output end of the electric push rod 15 is inserted into the socket 282 and the electric push rod 15 is pushed to move, the magnetic sheet 283 is released from its attraction to the solid-liquid separation chamber 25. The shovel 28 moves horizontally under the guidance of the fitting part 281 and the guide rail 253, thus moving the first separation chamber 251... The chips trapped inside 51 are scooped into the second separation chamber 261. When the scoop 28 moves close to the magnetic block 254, the magnetic block 254 limits the movement distance of the scoop 28 by its own physical means, and at the same time uses magnetism to prevent the scoop 28 from moving further. When the solid-liquid separation chamber 25 retracts, it actively pushes the scoop 28 to reset by using the repulsive property with the magnetic plate 283. When the scoop 28 resets to the position where the magnetic plate 283 and the solid-liquid separation chamber 25 attract each other, the magnetic plate 283 and the solid-liquid separation chamber 25 cooperate to continue to drive the scoop 28 to reset until the magnetic plate 283 and the solid-liquid separation chamber 25 are in contact, thereby realizing the reciprocating movement of the scoop 28.

[0022] Furthermore, when a certain amount of chips are stored in the second separation chamber 261, or when different materials are used in different holes of the steering gear housing 12 and need to be sorted and collected, the solid-liquid separation chamber 25 is rotated counterclockwise by driving the servo motor 14, so that the solid-liquid separation chamber 25 and the solid-gas separation chamber 26 rotate together. The solid-gas separation chamber 26 also includes at least one second standby chamber 262. Preferably, three second standby chambers 262 are provided. Each second standby chamber 262 is provided with a filter element 29. By rotating the solid-gas separation chamber 26, the second standby chambers 262 replace the second separation chamber 261 and communicate with the first standby chamber 252 and the first separation chamber 251.

[0023] To achieve this effect, such as Figure 12 and Figure 14As shown, the solid-gas separation chamber 26 is rotatably connected to the housing 21 via a switching mechanism 30 to switch between the second separation chamber 261 and the second standby chamber 262. The switching mechanism 30 includes a mounting groove 31 installed on the other end of the solid-gas separation chamber 26, and a second connecting shaft 32b connected to the housing 21 is rotatably embedded in the mounting groove 31. At least one second hinge shaft 33b is provided on the second connecting shaft 32b, and a second hook 34b is rotatably provided on the second hinge shaft 33b. The second hook 34b is arranged opposite to the first hook 34a. A plurality of second hooks 34b are provided in the mounting groove 31 to cooperate with the second hook 34b. With the design of the two ratchet teeth 35b, when the solid-liquid separation chamber 25 rotates counterclockwise, the first pawl 34a locks with the first ratchet tooth 35a, so that the torque of the first connecting shaft 32a can be transmitted to the first ratchet tooth 35a. The solid-liquid separation chamber 25 can drive the solid-gas separation chamber 26 to rotate together. At this time, the second pawl 34b and the second ratchet tooth 35b are unlocked. The second pawl 34b rotates around the second hinge shaft 33b under the push of the inner wall of the second ratchet tooth 35b. Therefore, the solid-gas separation chamber 26 can drive the mounting groove 31 to rotate on the surface of the second connecting shaft 32b, so as to achieve the purpose of switching the second standby chamber 262. When the solid-liquid separation chamber 25 rotates clockwise, the second pawl 34b locks with the second ratchet 35b, preventing the solid-gas separation chamber 26 from rotating under the restriction of the mounting groove 31 and the second connecting shaft 32b. This achieves the effect of switching between the first separation chamber 251 and the first standby chamber 252 by rotating the solid-liquid separation chamber 25, while the solid-gas separation chamber 26 does not rotate with the solid-liquid separation chamber 25.

[0024] Preferably, in order to control the flow path of airflow within the housing 21, such as Figure 8 As shown, a retainer 211 is provided on the inner wall of the housing 21. One end of the solid-liquid separation chamber 25 and the solid-gas separation chamber 26 are respectively rotatably embedded on one side of the retainer 211, ensuring that the axial positions of the solid-liquid separation chamber 25 and the solid-gas separation chamber 26 coincide, and ensuring that the first separation chamber 251 and the first standby chamber 252 can accurately communicate with the second separation chamber 261 before and after rotation. Through the through holes opened on the surface of the retainer 211 corresponding to the positions of the first standby chamber 252 and the second separation chamber 261, the material shovel 28 can pass through the through holes and be inserted into the second separation chamber 261. Through this design, after the airflow carrying the volatile gas enters the first standby chamber 252 through the sieve plate 27 provided on the side wall of the first separation chamber 251, it can only enter the second separation chamber 261 through the through holes on the retainer 211. The other second standby chambers 262 are kept closed under the restriction of the retainer 211, avoiding the entry of chips and volatile gas generated when boring different materials and causing pollution.

[0025] Furthermore, such as Figure 7As shown, in order to replace the filter element 29, a mounting base 291 is provided at the end of the filter element 29. Slots matching the mounting base 291 are provided on both the housing 21 and the solid-gas separation chamber 26. A sealing plate 212 is also provided on the housing 21 to block the slots. When the filter element 29 needs to be replaced, the sealing plate 212 is opened first, and then the mounting base 291 is pulled, so that the mounting base 291 drives the filter element 29 to slide horizontally under the restriction of the slots opened on the housing 21 and the solid-gas separation chamber 26. The filter element 29 can be taken out from the solid-gas separation chamber 26 and replaced.

[0026] like Figure 4 and Figure 18 As shown, a sealing mechanism 40 is provided inside the coolant pipe 23. The sealing mechanism 40 includes a ball valve 41 installed inside the coolant pipe 23. An opening and closing shaft 42 connected to the ball valve 41 is installed through the coolant pipe 23. During the adsorption process, the ball valve 41 remains closed. Through this design, the ball valve 41 can remain closed during the boring process to improve the sealing effect inside the housing 21 and increase the gas flow rate. The ball valve 41 is only opened when the boring is completed to discharge the coolant. Furthermore, such as Figure 19 As shown, the sealing mechanism 40 also includes a receiving cavity 46 disposed on the housing 21. A first gear 43 and a second gear 44 are rotatably disposed in the receiving cavity 46. A gear belt 45 is sleeved on the surface of the first gear 43 and the second gear 44. The output shaft of the servo motor 14 passes through the receiving cavity 46 and is connected to the second gear 44 and the solid-liquid separation cavity 25. The opening and closing shaft 42 is connected to the first gear 43. When the boring of the machined hole is completed, the servo motor 14 is started, which drives the solid-liquid separation chamber 25 to rotate and switch between the first separation chamber 251 and the first standby chamber 252. At the same time, the second gear 44 and the gear belt 45 drive the first gear 43 to rotate. Preferably, when the servo motor 14 drives the first separation chamber 251 to rotate to the position that connects with the second separation chamber 261, the first gear 43 drives the ball valve 41 to rotate one revolution to complete the opening and closing. The first gear 43 drives the ball valve 41 to rotate and open through the opening and closing shaft 42. At this time, the coolant remaining in the housing 21 can be discharged through the ball valve 41. At the same time, the ball valve 41 closes when the switching between the first separation chamber 251 and the first standby chamber 252 is completed, so as to continue to maintain the sealing of the housing 21.

[0027] Working principle: Ensure that the fixture body 11 is securely installed, and that the steering gear housing 12 is clamped and fixed on the fixture body 11. Check that all components are properly connected. The power connections of the fan 13, servo motor 14, electric actuator 15 and other equipment were checked and found to be normal, and they can be started normally. If there are multiple holes to be bored, when boring one of the holes in the steering gear housing 12, use an elastic sealing plug to block the other holes to be bored, so that a relatively closed space is formed inside the steering gear housing 12, which enhances the adsorption effect; Start the fan 13 to create negative pressure inside the housing 21, and generate suction at the connecting pipe 22. Drive the airflow to carry chips, volatile gas and coolant into the housing 21. Adjust the suction intensity by changing the negative pressure to adapt to different chip types. The airflow carries the chips and coolant into the first separation chamber 251. Under the action of gravity, the chips are intercepted and retained by the sieve plate 27 located at the bottom of the first separation chamber 251. The coolant passes through the sieve plate 27 and is accelerated through under the drive of negative pressure airflow. It is discharged through the coolant pipe 23, thus realizing the separation of chips and coolant. After the volatile gas enters the first separation chamber 251, it passes through the side wall sieve plate 27 into the first standby chamber 252, and then flows into the second separation chamber 261. After being filtered by the filter element 29, it is discharged through the exhaust pipe 24. The chips inside the first separation chamber 251 are cleaned. Start the servo motor 14 to drive the solid-liquid separation chamber 25 to rotate clockwise, so that the first separation chamber 251 and the second separation chamber 261 are connected, and the first standby chamber 252 takes over the first separation chamber 251 and connects with the connecting pipe 22 to continue the operation; The electric actuator 15 is activated, and its output end passes through the through hole in the housing 21 and the solid-liquid separation chamber 25 and is inserted into the insertion hole 282 of the shovel 28, pushing the shovel 28 to move back and forth. Under the guidance of the fitting part 281 and the guide rail 253, the chips in the first separation chamber 251 are pushed into the second separation chamber 261. When the shovel 28 moves close to the magnetic block 254, the magnetic block 254 limits its movement distance and uses magnetism to prevent further movement. When the solid-liquid separation chamber 25 retracts, it pushes the shovel 28 to reset. The magnetic sheet 283 cooperates with the solid-liquid separation chamber 25 to reset the shovel 28 to the fitting position, realizing the reciprocating movement. When a certain amount of chips are stored in the second separation chamber 261, or when chips of different materials need to be sorted and collected, the servo motor 14 drives the solid-liquid separation chamber 25 to rotate counterclockwise. Open the sealing plate 212 on the housing 21, pull the mounting seat 291 at the end of the filter element 29, so that the filter element 29 slides horizontally under the restriction of the slot on the housing 21 and the solid-gas separation chamber 26, and is taken out from the solid-gas separation chamber 26 for replacement. When the boring of the machined hole is completed, the servo motor 14 is started, which drives the solid-liquid separation chamber 25 to rotate and switch the first separation chamber 251 and the first standby chamber 252. At the same time, the first gear 43 is driven to rotate through the second gear 44 and the gear belt 45. The first gear 43 drives the ball valve 41 to rotate and open through the opening and closing shaft 42. The coolant remaining in the housing 21 is discharged through the ball valve 41. After the first separation chamber 251 and the first standby chamber 252 are switched, the ball valve 41 is closed to maintain the sealing of the housing 21.

[0028] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the present invention's technology and inventive concept, should be covered within the scope of protection of the present invention.

Claims

1. A boring jig for a steering gear housing arm hole, comprising a jig body (11) and a steering gear housing (12) clamped and fixed on the jig body (11), wherein the steering gear housing (12) is provided with a cylinder hole (121), characterized in that, The bottom of the fixture body (11) is equipped with a separation mechanism (20). The separation mechanism (20) includes a housing (21) provided on the fixture body (11). A connecting pipe (22) for inserting into the cylinder bore (121) is provided on the top of the housing (21). A suction force is generated at the connecting pipe (22) to draw the chips, volatile gas and coolant generated when boring the steering gear housing (12) into the housing (21). The housing (21) is rotatably provided with a solid-liquid separation chamber (25) that communicates with the coolant pipe (23). The solid-liquid separation chamber (25) includes a first separation chamber (251) and at least one first standby chamber (252). The first separation chamber (251) and the first standby chamber (252) are connected by a sieve plate (27). The chips entering the first separation chamber (251) are intercepted and retained by the sieve plate (27). The coolant passes through the sieve plate (27) and is discharged through the coolant pipe (23) provided at the bottom of the housing (21). The housing (21) is rotatably provided with a solid-gas separation chamber (26). The solid-gas separation chamber (26) includes a second separation chamber (261) that is connected to the first standby chamber (252). A filter element (29) is installed in the second separation chamber (261). The volatile gas entering the first separation chamber (251) enters the first standby chamber (252) through the sieve plate (27), flows into the second separation chamber (261), and is filtered by the filter element (29). The filtered gas is discharged through the exhaust pipe (24) provided on the housing (21). A shovel (28) is slidably disposed in the first separation chamber (251) and the first standby chamber (252). Rotating the solid-liquid separation chamber (25) connects the first separation chamber (251) with the second separation chamber (261). Then, the shovel (28) moves back and forth to push the chips in the first separation chamber (251) into the second separation chamber (261). The first standby chamber (252) takes over from the first separation chamber (251) to separate the chips and coolant.

2. The boring fixture for the arm hole of an automotive steering gear housing according to claim 1, characterized in that, The inner wall of the housing (21) is provided with a retainer (211). One end of the solid-liquid separation chamber (25) and the solid-gas separation chamber (26) are respectively rotatably embedded on one side of the retainer (211). The surface of the retainer (211) is provided with through holes corresponding to the positions of the first standby chamber (252) and the second separation chamber (261). The material shovel (28) can pass through the through holes and be inserted into the second separation chamber (261).

3. The boring fixture for the arm hole of an automotive steering gear housing according to claim 2, characterized in that, The filter element (29) is provided with a mounting base (291) at its end. The housing (21) and the solid-gas separation chamber (26) are both provided with slots that match the mounting base (291). The housing (21) is also provided with a sealing plate (212) to block the slots.

4. The boring fixture for the arm hole of an automotive steering gear housing according to claim 1, characterized in that, A servo motor (14) is installed on the fixture body (11). The output end of the servo motor (14) passes through the housing (21) and is connected to the solid-liquid separation chamber (25). The solid-liquid separation chamber (25) is rotatably connected to the solid-gas separation chamber (26) through a switching mechanism (30). The switching mechanism (30) includes a mounting groove (31) installed on the solid-gas separation chamber (26). A first connecting shaft (32a) connected to the solid-liquid separation chamber (25) is rotatably embedded in the mounting groove (31). At least one first hinge shaft (33a) is provided on the first connecting shaft (32a), and a first hook (34a) is rotatably provided on the first hinge shaft (33a). The mounting groove (31) is provided with a plurality of first ratchet teeth (35a) that cooperate with the first pawl (34a).

5. A boring fixture for an automotive steering gear housing arm hole according to claim 4, characterized in that, The solid-gas separation chamber (26) further includes at least one second standby chamber (262), and each second standby chamber (262) is provided with a filter element (29). The solid-gas separation chamber (26) is rotatably connected to the housing (21) via a switching mechanism (30) to switch between the second separation chamber (261) and the second standby chamber (262). The switching mechanism (30) includes a mounting groove (31) installed on the other end of the solid-gas separation chamber (26), and a second connecting shaft (32b) connected to the housing (21) is rotatably embedded in the mounting groove (31). At least one second hinge shaft (33b) is provided on the second connecting shaft (32b), and a second hook (34b) is rotatably provided on the second hinge shaft (33b). The second hook (34b) is arranged opposite to the first hook (34a). The mounting groove (31) is provided with a number of second ratchet teeth (35b) that cooperate with the second claw (34b).

6. A boring fixture for an automotive steering gear housing arm hole according to claim 1, characterized in that, The material shovel (28) is provided with a fitting part (281), and the first separation chamber (251) and the first standby chamber (252) are both provided with guide rails (253) that fit into the fitting part (281). The shovel (28) is also equipped with a magnetic sheet (283) that attracts the solid-liquid separation chamber (25), and the end of the guide rail (253) is provided with a magnetic block (254) that blocks the shovel (28) and repels the magnetic sheet (283).

7. A boring fixture for an automotive steering gear housing arm hole according to claim 6, characterized in that, The clamp body (11) is equipped with an electric push rod (15), and the housing (21) and the solid-liquid separation chamber (25) are provided with through holes through which the output end of the power push rod (15) passes. The material shovel (28) is provided with an insertion hole (282) for inserting the output end of the power push rod (15).

8. A boring fixture for an automotive steering gear housing arm hole according to claim 1, characterized in that, A sealing mechanism (40) is provided inside the coolant pipe (23). The sealing mechanism (40) includes a ball valve (41) provided inside the coolant pipe (23). An opening and closing shaft (42) connected to the ball valve (41) is provided through the coolant pipe (23). The ball valve (41) remains closed during the adsorption process.

9. A boring fixture for an automotive steering gear housing arm hole according to claim 8, characterized in that, The sealing mechanism (40) further includes a receiving cavity (46) disposed on the housing (21), and a first gear (43) and a second gear (44) are rotatably disposed in the receiving cavity (46), and a gear belt (45) is sleeved on the surface of the first gear (43) and the second gear (44). The output shaft of the servo motor (14) passes through the accommodating cavity (46) and is connected to the second gear (44) and the solid-liquid separation cavity (25). The opening and closing shaft (42) is connected to the first gear (43).

10. A boring fixture for an automotive steering gear housing arm hole according to claim 2, characterized in that, When the servo motor (14) drives the first separation chamber (251) to rotate to the position where it connects with the second separation chamber (261), the first gear (43) drives the ball valve (41) to rotate one revolution to complete the opening and closing.

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