Gear chamfering device

Abstract

The application relates to the technical field of gear machining, in particular to a gear chamfering device; the device comprises a machine body, a machine door is installed on one side of the machine body, a workbench is fixedly installed in the machine body, a bottom plate is slidably connected to the upper end of the workbench, and the bottom plate and the workbench are connected through guide rails; the worm drives the worm wheel to drive the turnover frame to rotate through the driving motor, the upper-end bevel gear is synchronously turned over through the turnover frame, the tooth inclination direction of the surface of the turned-over bevel gear matches the gravity direction, in the process of chamfering the bevel gear, the cuttings can vertically slide along the tooth groove bevel, the cuttings are prevented from being accumulated in the tooth groove, the cuttings are prevented from being driven by the cutter to scratch the tooth surface, the precision of the tooth surface is improved, the surface of the cutting area is prevented from being overheated due to the accumulation of the cuttings, local overheating problems are solved, the temperature of the cutter blade is prevented from exceeding the heat-resistant limit, and the service life of the cutter is prolonged.

Description

Technical Field

[0001] This invention relates to the field of gear processing technology, specifically a gear chamfering processing device. Background Technology

[0002] As an indispensable power transmission element in modern mechanical systems, gears achieve efficient transmission of motion and power through continuous meshing of precisely arranged teeth on their rims. They are widely used in key fields such as automobiles, machine tools, and wind power. The manufacturing of such mechanical components requires full-process control of "materials-forming-strengthening-finishing". Chamfering, as an indispensable auxiliary process in gear transmission production, has a decisive impact on the assembly safety, structural reliability, and transmission performance of gears.

[0003] A gear chamfering machine is a machine tool that chamfers and rounds the ends of gear teeth. Existing gear chamfering machines fix the gear on a worktable and control the cutting tool to cut vertically downwards at the ends of the gear teeth to achieve chamfering. During the chamfering process of cylindrical gears, the cut chips can fall directly into the chip removal groove under the worktable under the force of gravity, avoiding chips from getting stuck between the tooth surface and the cutting tool, without the need to stop the machine for cleaning.

[0004] However, when chamfering bevel gears (such as bevel gears), because the ends of the bevel gear teeth are inclined upwards, the chips being cut tend to accumulate in the tooth grooves. On the one hand, the accumulated chips will be driven by the rotating tool or workpiece, causing relative friction between the tooth surface and the tool. This not only causes scratches on the tooth surface and increases the roughness of the tooth surface, but also aggravates tool wear and shortens the tool life. On the other hand, the accumulation of chips will hinder the heat dissipation of the cutting area, causing the tool edge temperature to exceed the heat resistance limit, the tool hardness to decrease, and thus the risk of tool chipping or breakage. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies, this invention proposes a gear chamfering processing device. This invention uses a tilting frame, where a drive motor drives a worm gear to rotate the tilting frame, causing the upper bevel gear to rotate synchronously. This ensures that the tilting direction of the teeth on the rotated bevel gear surface matches the direction of gravity. Therefore, during the bevel gear chamfering process, the cutting debris can slide vertically down the inclined surface of the tooth groove, preventing debris accumulation within the tooth groove. This not only prevents debris from being dragged by the tool and causing scratches on the tooth surface, improving the precision of the tooth surface, but also prevents overheating of the cutting area due to debris accumulation, thus avoiding localized overheating and preventing the tool edge temperature from exceeding its heat resistance limit, thereby extending the tool's service life.

[0006] The technical solution adopted by this invention to solve its technical problem is as follows: A gear chamfering processing device according to this invention includes a machine body, with a door installed on one side of the machine body; a worktable is fixedly installed inside the machine body; a base plate is slidably connected to the upper end of the worktable; the base plate and the worktable are connected by a guide rail; a mounting frame is fixedly installed on one side of the worktable; a mounting plate is slidably connected to the side of the mounting frame near the worktable; a hydraulic push rod is installed inside the machine body; the end of the hydraulic push rod away from the machine body passes through the mounting frame and connects to the mounting plate; a machine head is installed on one side of the mounting plate; a stepper motor is installed inside the mounting plate; the stepper motor is used to drive the machine head to rotate, and also includes... A bracket is fixedly mounted on the upper part of a base plate; two brackets are provided; a tilting frame is rotatably connected between the two brackets; a dustproof shell is provided on the side of the bracket away from the tilting frame; a meshing worm gear and worm are provided inside the dustproof shell; the worm gear is fixedly connected to the tilting frame; the worm is rotatably connected to the dustproof shell; a drive motor is fixedly mounted on one side of the dustproof shell; the drive motor is used to drive the worm to rotate; a turntable is rotatably connected to the upper end of the tilting frame; a servo motor is fixedly mounted on the lower end of the tilting frame; the servo motor is used to drive the turntable to rotate; a clamping unit is mounted above the turntable; the clamping unit is used to clamp the gear workpiece.

[0007] Preferably, the clamping unit includes a support column; the support column is threadedly connected to the upper end of the turntable; a clamping groove is formed on the surface of the support column; a clamping block is slidably and sealingly connected in the clamping groove; a cylindrical groove is formed on the upper surface of the turntable; an oil passage is formed inside the turntable; one end of the oil passage communicates with the cylindrical groove, and the other end passes through the support column and communicates with the clamping groove; a cylindrical rod is slidably and sealingly connected in the cylindrical groove; the cylindrical rod is connected to the bottom of the cylindrical groove by a support spring.

[0008] Preferably, the clamping unit further includes a pressure plate; the pressure plate is located above the support column; an electric push rod is rotatably mounted on the end of the tilting frame away from the drive motor; the upper end of the electric push rod is hinged to the pressure plate; a hinge rod is provided on one side of the electric push rod; the pressure plate and the tilting frame are hinged together by the hinge rod; a pressure block is rotatably mounted on the end of the pressure plate near the support column.

[0009] Preferably, the lower end face of the pressure block is made of fluororubber material; the lower end face of the pressure block has a groove.

[0010] Preferably, a rotating cylinder is rotatably connected to the upper end of the pressure plate; a screw is provided between the pressure block and the rotating cylinder; one end of the screw is rotatably connected to the pressure block, and the other end is threadedly connected to the pressure plate.

[0011] Preferably, the turntable has a cavity inside that communicates with the oil passage; the inner wall of the oil passage has an air cavity; an air film is fixedly connected to the bottom of the air cavity; and the air film communicates with the air cavity.

[0012] Preferably, the upper end wall of the clamping groove is provided with an air hole communicating with the outside; an automatic exhaust valve is installed in the air hole.

[0013] Preferably, the bottom of the air cavity is provided with a circular groove that communicates with the cavity.

[0014] The beneficial effects of this invention are as follows:

[0015] 1. This invention, by setting up a tilting frame, enables the drive motor to drive the worm gear through a worm shaft to rotate the tilting frame, which in turn drives the upper bevel gear to rotate synchronously. This ensures that the tilting direction of the teeth on the surface of the tilted bevel gear matches the direction of gravity. As a result, during the chamfering process of the bevel gear, the cutting debris can slide vertically down the inclined surface of the tooth groove, preventing the debris from accumulating in the tooth groove. This not only prevents the debris from being dragged by the tool and causing scratches on the tooth surface, thus improving the precision of the tooth surface, but also prevents the surface of the cutting area from overheating due to debris accumulation, thus preventing the tool edge temperature from exceeding the heat resistance limit and extending the tool's service life.

[0016] 2. This invention uses a pressure block made of fluororubber, which gives the pressure block good elastic properties. This changes the contact between the pressure block and the upper surface of the bevel gear workpiece from a rigid point contact to a flexible surface contact, thus avoiding surface damage to the upper surface of the bevel gear workpiece caused by the tilted pressure block. Because the lower end of the pressure block has a groove, when the pressure block is pressed, the annular solid area outside the tilted groove will undergo elastic deformation. The elastic deformation reduces the tilted contact resistance. As the pressure plate flips downward, the contact point between the pressure block and the workpiece shifts towards the center area of ​​the support column, further increasing the safe distance between the edge of the pressure block and the gear teeth, so as to ensure that the tool can stably perform chamfering on the bevel gear workpiece. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a perspective view of the present invention;

[0019] Figure 2 This is a perspective view of the mounting bracket used in this invention;

[0020] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 This is a schematic diagram of the mounting bracket used in this invention;

[0022] Figure 5yes Figure 4 Enlarged view of point B in the middle;

[0023] Figure 6 yes Figure 4 Enlarged view of point C in the middle;

[0024] In the diagram: 1. Machine body; 11. Machine door; 12. Workbench; 121. Base plate; 122. Bracket; 123. Guide rail; 13. Mounting bracket; 131. Mounting plate; 132. Hydraulic push rod; 133. Machine head; 134. Stepper motor; 14. Tilting frame; 141. Dustproof shell; 142. Worm gear; 143. Worm; 144. Drive motor; 15. Turntable; 151. Servo motor; 152. Support column; 153. Clamping groove; 154. Clamping block; 155. Cylindrical groove; 156. Oil passage; 157. Cylindrical rod; 158. Support spring; 16. Pressure plate; 161. Electric push rod; 162. Hinge rod; 163. Pressure block; 164. Groove; 165. Rotary drum; 166. Screw; 17. Cavity; 171. Air chamber; 172. Air film; 173. Air hole; 174. Automatic exhaust valve; 175. Circular groove. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0026] like Figures 1 to 6 As shown, the gear chamfering processing device of the present invention includes a body 1, with a door 11 installed on one side of the body 1; a worktable 12 is fixedly installed inside the body 1; a base plate 121 is slidably connected to the upper end of the worktable 12; the base plate 121 and the worktable 12 are connected by a guide rail 123; a mounting frame 13 is fixedly installed on one side of the worktable 12; a mounting plate 131 is slidably connected to the side of the mounting frame 13 near the worktable 12; a hydraulic push rod 132 is installed inside the body 1; the end of the hydraulic push rod 132 away from the body 1 passes through the mounting frame 13 and is connected to the mounting plate 131; a machine head 133 is installed on one side of the mounting plate 131; a stepper motor 134 is installed inside the mounting plate 131; the stepper motor 134 is used to drive the machine head 133 to rotate.

[0027] A bracket 122 is fixedly installed on the upper end of a base plate 121; two brackets 122 are provided; a flipping frame 14 is rotatably connected between the two brackets 122; a dustproof shell 141 is provided on the side of the bracket 122 away from the flipping frame 14; a meshing worm gear 142 and a worm 143 are provided inside the dustproof shell 141; the worm gear 142 is fixedly connected to the flipping frame 14; the worm 143 is rotatably connected to the dustproof shell 141; a drive motor 144 is fixedly installed on one side of the dustproof shell 141; the drive motor 144 is used to drive the worm 143 to rotate; a turntable 15 is rotatably connected to the upper end of the flipping frame 14; a servo motor 151 is fixedly installed at the lower end of the flipping frame 14; the servo motor 151 is used to drive the turntable 15 to rotate; a clamping unit is installed above the turntable 15; the clamping unit is used to clamp the gear workpiece.

[0028] In this embodiment, the clamping unit includes a support column 152; the support column 152 is threadedly connected to the upper end of the turntable 15; a clamping groove 153 is formed on the surface of the support column 152; a clamping block 154 is slidably and sealingly connected in the clamping groove 153; a cylindrical groove 155 is formed on the upper surface of the turntable 15; an oil passage 156 is formed inside the turntable 15; one end of the oil passage 156 communicates with the cylindrical groove 155, and the other end passes through the support column 152 and communicates with the clamping groove 153; a cylindrical rod 157 is slidably and sealingly connected in the cylindrical groove 155; the cylindrical rod 157 is connected to the bottom of the cylindrical groove 155 by a support spring 158.

[0029] In this embodiment, the clamping unit further includes a pressure plate 16; the pressure plate 16 is located above the support column 152; an electric push rod 161 is rotatably mounted on the end of the flipping frame 14 away from the drive motor 144; the upper end of the electric push rod 161 is hinged to the pressure plate 16; a hinge rod 162 is provided on one side of the electric push rod 161; the pressure plate 16 and the flipping frame 14 are hinged together by the hinge rod 162; a pressure block 163 is rotatably mounted on the end of the pressure plate 16 near the support column 152.

[0030] Specifically, in actual use, first open the machine door 11, install the cutting tool on the machine head 133, then control the hydraulic push rod 132 to push the mounting plate 131 to drive the machine head 133 to rise, and then control the guide rail 123 to run, so that the guide rail 123 drives the base plate 121 connected to it to move along the worktable 12 towards the direction of the machine door 11, until the base plate 121 moves to the end of the guide rail 123 near the machine door 11. At this time, the user places the bevel gear workpiece that needs to be chamfered on the turntable 15, so that the support column 152 at the upper end of the turntable 15 is inserted into the center hole of the bevel gear workpiece. At this time, the bevel gear is fitted on the support column 152, and the lower end face of the bevel gear contacts the upper end face of the column rod 157.

[0031] Subsequently, the electric push rod 161 is extended, allowing it to push the pressure plate 16 to rotate upwards. Since the pressure plate 16 is hinged to the tilting frame 14 via a hinge rod 162, the upward-rotating pressure plate 16 rotates upwards using the hinge point between itself and the hinge rod 162 as a fulcrum. This causes the pressure plate 16 to drive the pressure block 163 to rotate closer to the bevel gear workpiece until the pressure block 163 contacts the bevel gear workpiece. The pressure block 163 then pushes the bevel gear workpiece downwards towards the turntable 15, causing the bevel gear workpiece to push the cylindrical rod 157 to compress the support spring 158 into the cylindrical groove 155. This compresses the hydraulic oil in the cylindrical groove 155, causing it to flow through the oil passage 156 into the pressing groove 153. As the hydraulic oil enters the pressing groove... The groove 153 allows the clamping block 154 inside the clamping groove 153 to extend out of the clamping groove 153 under the push of hydraulic oil, so that the clamping block 154 can contact the inner wall of the center hole of the bevel gear workpiece. Since there are three clamping blocks 154, and the three clamping blocks 154 are evenly distributed in a 120° ring, when all three clamping blocks 154 contact the inner wall of the rotating ring and apply thrust, a resultant force pointing in the center will be formed. According to the three-point centering principle and the self-adjustment of hydraulic thrust, the inner wall of the bevel gear workpiece will automatically correct the eccentricity under the thrust in three directions, and finally achieve the concentricity of the bevel gear workpiece and the support column 152, so that the bevel gear workpiece is stabilized in the center of the turntable 15 and the bevel gear workpiece is firmly fixed on the support column 152.

[0032] After the bevel gear workpiece is fixed on the support column 152, the drive motor 144 is controlled to run, so that the drive motor 144 can directly drive the worm 143 to rotate. The rotating worm 143 can drive the worm wheel 142 meshing with it to rotate. The worm wheel 142 drives the tilting plate fixed to it to rotate towards the machine head 133. The tilting plate drives the fixed bevel gear workpiece to rotate synchronously until the bevel gear workpiece drives the inclined teeth to rotate to a vertical position. At this time, the drive motor 144 is stopped. At the same time, the guide rail 123 drives the base plate 121 to move towards the machine head 133. Simultaneously, the hydraulic push rod 132 is controlled to retract, so that the hydraulic push rod 132 pulls the upper end connected to the mounting The plate 131 slides downward along the mounting bracket 13, causing the mounting bracket 13 to drive the machine head 133 to descend. Since a non-contact gear setter connected to the mounting plate 131 is set below the machine head 133, the mounting plate 131 is controlled to descend until the non-contact gear setter and the bevel gear workpiece are aligned. As the base plate 121 drives the bevel gear workpiece to continue to approach the machine head 133, the guide rail 123 stops when the distance between the bevel gear workpiece and the non-contact gear setter reaches the detection distance. At this time, the non-contact gear setter uses a high-resolution optical imaging system and laser triangulation technology to analyze the gear tooth position parameters in real time through an indexing positioning algorithm, thereby achieving precise tooth position positioning without contacting the tooth surface, ensuring that the tool and the gear tooth groove are precisely aligned.

[0033] Furthermore, by setting up a dustproof shell 141, the dustproof shell 141 can effectively block metal chips, burrs, and other impurities generated during cutting from splashing onto the surface of the worm gear 142 or worm 143 by constructing a closed protective space. On the one hand, it prevents the chips falling between the worm gear 142 and worm 143 from causing wear on the worm gear 142 and worm 143, thereby improving the service life of the worm gear 142 and worm 143. On the other hand, it avoids the chips affecting the normal transmission of the worm gear 142 and worm 143, so as to ensure the smoothness of the transmission and ensure that the drive motor 144 can stably drive the tilting frame 14 to accurately stop at the specified angle, so that the bevel gear can be accurately tilted to the position of vertical teeth, so that the chips can slide off naturally and the tool can cut vertically and stably, thereby improving the chamfer dimensional accuracy of the bevel gear workpiece.

[0034] After the precise tooth positioning is completed, the guide rail 123 is first controlled to drive the base plate 121 away from the mounting plate 131. At this time, the hydraulic push rod 132 is controlled to pull the mounting plate 131 down, so that the mounting plate 131 drives the machine head 133 down, so that the machine head 133 drives the tool to align with the bevel gear workpiece. The stepper motor 134 is controlled to run, so that the stepper motor 134 drives the machine head 133 and drives the tool to rotate. At this time, the guide rail 123 is controlled to drive the base plate 121 to move the bevel gear workpiece closer to the machine head 133, so that the bevel gear workpiece contacts the tool, so that the chamfering machine grinds and chamfers the tooth end of the bevel gear workpiece. At this time, the servo motor 151 is controlled to run, so that the servo motor 151 can drive the turntable 15 to rotate the bevel gear workpiece around the axis of the support column 152, so that the tool only needs to feed in the vertical direction to cut and chamfer the gear end surrounding the surface of the bevel gear workpiece.

[0035] This invention, by setting up a flipping frame 14, enables the drive motor 144 to drive the worm gear 142 via the worm 143, thereby rotating the flipping frame 14. This causes the flipping frame 14 to synchronously rotate the upper bevel gear, aligning the tooth inclination direction with the direction of gravity. As a result, during the bevel gear chamfering process, the cutting debris can slide vertically down the inclined surface of the tooth groove, preventing debris from accumulating in the tooth groove. This not only prevents the debris from being dragged by the tool and causing scratches on the tooth surface, thus improving the precision of the tooth surface, but also prevents the surface of the cutting area from overheating due to debris accumulation, thus preventing the tool edge temperature from exceeding the heat resistance limit and extending the tool's service life.

[0036] In one embodiment of the present invention, the lower end face of the pressure block 163 is made of fluororubber material; a groove 164 is provided on the lower end face of the pressure block 163.

[0037] The upper end of the pressure plate 16 is rotatably connected to a rotating cylinder 165; a screw 166 is provided between the pressure block 163 and the rotating cylinder 165; one end of the screw 166 is rotatably connected to the pressure block 163, and the other end is threadedly connected to the pressure plate 16.

[0038] Since the thickness and center hole size of different bevel gear workpieces vary, for bevel gear workpieces with smaller thickness and larger center holes, the chamfering process involves the pressure plate 16 flipping to a horizontal position, and the pressure block 163 pushing the bevel gear workpiece downwards. This causes the bevel gear workpiece to push the cylindrical rod 157 into the cylindrical groove 155, allowing the hydraulic oil in the cylindrical groove 155 to enter the clamping groove 153. This causes the clamping block 154 in the clamping groove 153 to extend out of the clamping groove 153. As the bevel gear workpiece descends, the support column 152 continuously extends from the center hole of the bevel gear workpiece until the pressure plate 16 contacts the upper surface of the support column 152. Because the center hole of the bevel gear workpiece is large, the clamping block 154 cannot contact the inner wall of the center hole of the bevel gear workpiece. To address this, the present invention addresses the issue by adjusting the pressure block 16... A groove 164 is provided at the lower end of the 3, so that when the support column 152 extends out of the center hole of the bevel gear workpiece, the support column 152 can enter the groove 164 at the lower end of the pressure block 163, thereby preventing the pressure block 163 from being blocked by the support column 152 and unable to continue pushing the bevel gear workpiece with a smaller thickness and a larger center hole to descend. This allows the pressure block 163 to continue pushing the cylindrical rod 157 into the cylindrical groove 155 through the bevel gear workpiece with a smaller thickness and a larger center hole. This causes the hydraulic oil in the cylindrical groove 155 to continuously flow into the pressing groove 153 until the pressing block 154 in the pressing groove 153 can contact the inner wall of the center hole of the bevel gear workpiece with a smaller thickness and a larger center hole. This allows the bevel gear workpiece with a smaller thickness and a larger center hole to be pushed and stabilized on the support column 152 by the pressing block 154.

[0039] For bevel gear workpieces with a large thickness and a small center hole, before the pressure plate 16 flips to a horizontal state, the pressure block 163, which contacts the bevel gear workpiece with a large thickness and a small center hole, pushes the bevel gear workpiece to be firmly fixed on the support column 152. Since the pressure plate 16 is in an inclined state at this time, and the pressure block 163 connected to the pressure plate 16 is also in an inclined state, this will reduce the contact area between the inclined pressure block 163 and the upper end face of the bevel gear workpiece, causing a sudden increase in pressure per unit area. Therefore, the contact point between the upper end face of the bevel gear workpiece and the pressure block 163 will be subjected to local pressure and produce indentation marks, affecting the surface quality of the workpiece. In addition, if the inclined pressure block 163 is close to the gear teeth, it will directly intrude into the machining space of the tool, causing the tool path to be blocked, interference and collision, and thus causing problems such as tool damage or machining interruption.

[0040] To address this, the present invention utilizes the arrangement of the rotating drum 165 and the screw 166. Before processing a bevel gear workpiece with a large thickness and a small center hole, the screw 166 is rotated first, causing it to spiral upward relative to the rotating drum 165. This causes the screw 166 to drive the pressure block 163, which is rotatably connected to it, to rise, reducing the distance between the pressure block 163 and the pressure plate 16 and increasing the distance between the pressure block 163 and the bevel gear workpiece. As a result, when the flipping frame 14 flips the pressure block 163, the contact point of the pressure block 163 can shift towards the center area of ​​the workpiece, increasing the distance between the pressure block 163 and the edge of the gear teeth. This prevents the pressure block 163 from interfering with the chamfering path of the cutting tool, ensuring that the cutting tool can stably perform chamfering processing on the bevel gear workpiece.

[0041] Furthermore, by making the pressure block 163 into a fluororubber material, the present invention gives the pressure block 163 good elastic properties, changing the contact between the pressure block 163 and the upper end face of the bevel gear workpiece from a rigid point contact to a flexible surface contact. This avoids the problem of surface damage to the upper end face of the bevel gear workpiece caused by the inclined pressure block 163. Since the lower end of the pressure block 163 is provided with a groove 164, when the pressure block 163 is pressed, the annular solid area outside the inclined circular groove 175 will undergo elastic deformation. The elastic deformation reduces the inclined contact resistance. As the pressure plate 16 flips downward, the contact point between the pressure block 163 and the workpiece shifts towards the center area of ​​the support column 152, further increasing the safe distance between the edge of the pressure block 163 and the gear teeth, so as to ensure that the tool can stably perform chamfering on the bevel gear workpiece.

[0042] In one embodiment of the present invention, the turntable 15 has a cavity 17 that communicates with the oil passage 156; the inner wall of the oil passage 156 has an air cavity 171; the bottom of the air cavity 171 is fixedly connected to an air film 172; the air film 172 communicates with the air cavity 171.

[0043] The upper wall of the clamping groove 153 is provided with an air hole 173 that communicates with the outside; an automatic exhaust valve 174 is installed in the air hole 173, and a circular groove 175 that communicates with the cavity 17 is provided at the bottom of the air chamber 171.

[0044] When the center hole of the bevel gear workpiece to be processed is too large or too small, the support column 152 needs to be replaced so that the clamping block 154 on the support column 152 can fix the bevel gear workpiece to be processed. In order to prevent the hydraulic oil in the oil passage 156 from leaking when the support column 152 is replaced.

[0045] In the initial state, the support spring 158 pushes the cylindrical rod 157 out of the cylindrical groove 155. At this time, the space inside the cylindrical groove 155 increases, allowing the hydraulic oil in the pressing groove 153 to flow back into the cylindrical groove 155 through the oil passage 156. During the process of the hydraulic oil in the pressing groove 153 flowing back into the cylindrical groove 155 through the oil passage 156, the hydraulic oil in the pressing groove 153 will completely flow into the oil passage 156, causing the hydraulic oil level to flow to the cavity 17 through the oil passage 156. At this time, the air film 172 in the air chamber 171 is no longer blocked by the hydraulic oil. Since the bottom of the air chamber 171 has a circular groove 175 communicating with the cavity 17, the air film 172 is subjected to the pressure difference on both sides, causing the air film 172 to... Under negative pressure, the hydraulic oil enters the oil passage 156 and adheres to the inner wall of the oil passage 156. As the hydraulic oil continues to flow back to the cylindrical groove 155, the amount of hydraulic oil in the oil passage 156 decreases, and the negative pressure in the oil passage 156 increases. At this time, the gas in the cavity 17 enters the air chamber 171, causing the air film 172 to inflate and penetrate into the oil passage 156 below the cavity 17. This causes the oil passage 156 below the cavity 17 to be blocked by the air film 172. At this time, the user can unscrew the support column 152. Air enters the oil passage 156 above the cavity 17, but because the oil passage 156 below the air is blocked by the air film 172, the air cannot enter the cylindrical groove 155 through the oil passage 156 below the cavity 17.

[0046] After replacing the new support column 152, the bevel gear workpiece is placed on the support column 152, and the tilting frame 14 is tilted to a horizontal position. This allows the pressure block 163 to push the cylindrical rod 157 through the bevel gear workpiece, squeezing the support spring 158 into the cylindrical groove 155. This causes the hydraulic oil in the cylindrical groove 155 to enter the oil passage 156, restoring the pressure in the oil passage 156. This causes the air film 172 to be pushed out of the oil passage 156 and into the air chamber 171 by the hydraulic oil. At this time, the hydraulic oil in the cylindrical groove 155 enters the pressing groove 153 through the oil passage 156. The surface of the clamping block 154 is provided with an air hole 173 that communicates with the clamping groove 153; and an automatic air vent valve 174 is installed in the air hole 173, so that the air entering the clamping groove 153 will be discharged through the automatic air vent valve 174 of the air hole 173 until the hydraulic oil fills the clamping groove 153 and enters the air hole 173. The automatic air vent valve 174 is controlled by a float to open and close the valve. Therefore, the hydraulic oil entering the air hole 173 will push the automatic air vent valve 174 to close. At this time, the hydraulic oil in the clamping groove 153 pushes the clamping block 154 to extend out of the clamping groove 153.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gear chamfering processing device, comprising a body (1), wherein a door (11) is installed on one side of the body (1); a worktable (12) is fixedly installed inside the body (1); a base plate (121) is slidably connected to the upper end of the worktable (12); the base plate (121) and the worktable (12) are connected by a guide rail (123); a mounting frame (13) is fixedly installed on one side of the worktable (12); the mounting frame (13) is close to the worktable (12). A mounting plate (131) is slidably connected to one side of the machine body (1); a hydraulic push rod (132) is installed inside the machine body (1); the end of the hydraulic push rod (132) away from the machine body (1) passes through the mounting bracket (13) and is connected to the mounting plate (131); a machine head (133) is installed on one side of the mounting plate (131); a stepper motor (134) is installed inside the mounting plate (131); the stepper motor (134) is used to drive the machine head (133) to rotate, characterized in that: Also includes: Support (122), the support (122) is fixedly installed on the bottom plate (121) upper end, the support (122) number is provided with two, two the support (122) between rotationally connected with turnover frame (14), the support (122) is away from the side of turnover frame (14) and is provided with dust cover (141), the dust cover (141) is provided with the worm (143) and the worm gear (142) that mutually engages in, the worm gear (142) is fixedly connected with turnover frame (14), the worm (143) is rotatably connected with dust cover (141), dust cover (141) one side is fixedly installed with drive motor (144), drive motor (144) is used to drive worm (143) rotation, turnover frame (14) upper end rotatably connected with rotary table (15), turnover frame (14) lower end is fixedly installed with servo motor (151), servo motor (151) is used to drive rotary table (15) rotation, clamping unit, the clamping unit is installed above rotary table (15), the clamping unit is used to the clamping of gear workpiece; The clamping unit includes support column (152), the support column (152) is threadedly connected in rotary table (15) upper end, the support column (152) surface is provided with abutting groove (153), the abutting groove (153) is slidably and sealingly connected with abutting block (154), the rotary table (15) upper end surface is provided with cylindrical groove (155), the rotary table (15) inside is provided with oil channel (156), one end of oil channel (156) is communicated with cylindrical groove (155), and the other end penetrates support column (152) and is communicated with abutting groove (153), the cylindrical groove (155) is slidably and sealingly connected with cylindrical rod (157), and the cylindrical rod (157) and the groove bottom of cylindrical groove (155) are connected through support spring (158); The clamping unit further includes pressing plate (16), the pressing plate (16) is located above support column (152), the turnover frame (14) is rotatably installed with electric push rod (161) in the end away from drive motor (144), the upper end of electric push rod (161) is hinged with pressing plate (16), one side of electric push rod (161) is provided with hinged rod (162), the pressing plate (16) and turnover frame (14) are hinged through hinged rod (162), the pressing plate (16) is rotatably installed with pressing block (163) in the end close to support column (152), The lower end surface of the pressing block (163) is made of fluorine rubber material, the lower end surface of the pressing block (163) is provided with recess (164), the pressing plate (16) upper end rotatably connected with rotary drum (165), the pressing block (163) and rotary drum (165) are provided with screw rod (166), one end of screw rod (166) is rotatably connected with pressing block (163), and the other end is threadedly connected with pressing plate (16).

2. The gear chamfering apparatus of claim 1, wherein: The rotating disc (15) is internally provided with a cavity (17) communicated with an oil channel (156); the inner wall of the oil channel (156) is provided with an air cavity (171); the bottom of the air cavity (171) is fixedly connected with an air film (172); the air film (172) is communicated with the air cavity (171).

3. The gear chamfering apparatus of claim 1, wherein: The upper end wall of the abutting groove (153) is provided with an air hole (173) communicated with the outside; the air hole (173) is internally installed with an automatic air exhaust valve (174).

4. The gear chamfering apparatus of claim 2, wherein: The bottom of the air cavity (171) is provided with a circular groove (175) communicated with the cavity (17).

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