High-precision spiral bevel gear automatic gear milling device and machining method thereof

Abstract

The invention discloses a high-precision spiral bevel gear automatic gear milling device and a machining method thereof, and particularly relates to the technical field of gear machining, the high-precision spiral bevel gear automatic gear milling device comprises a base, a limiting mechanism is arranged at the top of the base, an adjusting mechanism is fixedly connected to the bottom of the limiting mechanism, a mounting frame is fixedly connected to the top of the base, and a gear milling mechanism is slidably connected to the mounting frame. By arranging the limiting mechanism, when spiral bevel gears with different inner diameters are limited and fixed, the motor only needs to be set according to the maximum gear inner diameter within the range that the device can reach, and after the motor drives the limiting mechanism to reach force used for limiting a gear workpiece, the rotating rod can be in an idle state automatically; according to the gear clamping device, the situation that clamping force is too large or too small is avoided, when spiral bevel gears with different inner diameters are clamped and fixed through the device, the gears can be stressed more stably, the device is protected, and therefore the clamping efficiency and the gear milling precision of the device are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of gear processing, and more specifically, to a high-precision spiral bevel gear automatic milling device and a processing method thereof. Background Art

[0002] Bevel gears are used to transmit motion and power between two intersecting axes. There are two types of spiral bevel gears. One is the arc bevel gear, in which the large wheel axis and the small wheel axis intersect; the other is the hypoid spiral bevel gear, in which the large wheel axis and the small wheel axis have a certain offset. The world-class companies that produce spiral bevel gears are mainly Gleason in the United States and Oerlikon in Switzerland. Spiral bevel gears are widely used in mechanical transmission fields such as automobiles, aviation, and mining due to their large overlap coefficient, strong load-bearing capacity, high transmission ratio, smooth transmission, and low noise.

[0003] The Chinese patent application number CN201610003267.5 discloses a fully automatic spiral bevel gear milling machine. The spiral bevel gear milling machine has a bed and a material storage located on both sides of the bed. The top surface of the bed is provided with an XY plane moving mechanism that can move arbitrarily on the top surface of the bed; the XY plane moving mechanism is provided with a Z-axis guide arranged along the Z-axis direction, and a tool box is provided on the Z-axis guide. The tool box is equipped with a C-axis that can make a rotary motion, and a cutter disc for machining spiral bevel gears is installed on the C-axis. Manipulators are provided on both sides of the workpiece box, which can automatically load and unload materials at the same time and efficiently. The B axis of the machine tool is also parallel to the ground, and its turntable is fixed to the upper part of the front of the bed through a bearing and rotates under the drive of the B axis power. The B axis turntable is provided with an A axis that intersects the B axis vertically and can make a rotary motion, and the A axis is installed with the bevel gear to be processed. The machine tool of this invention has the characteristics of simple and compact structure, few parts, good processability, and can use two manipulators to automatically and efficiently load and unload materials.

[0004] When the existing spiral bevel gear milling device limits and fixes spiral bevel gears with different inner diameters, it is necessary to reset the clamping force of the spiral bevel gear according to the inner diameter of the spiral bevel gear each time, which is rather troublesome. Moreover, if the set clamping force does not match the inner diameter of the spiral bevel gear, on the one hand, too small a clamping force will cause the spiral bevel gear to move during the milling process, thereby reducing the milling accuracy. On the other hand, too large a clamping force will cause excessive force on the limiting mechanism during the clamping process of the spiral bevel gear, which will cause deformation and damage to the internal components of the limiting mechanism, thereby affecting the clamping accuracy. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a high-precision spiral bevel gear automatic milling device and a processing method thereof, so as to solve the problem that the existing spiral bevel gear milling device proposed in the above background technology needs to reset the clamping force of the spiral bevel gear according to the inner diameter of the spiral bevel gear each time when limiting and fixing the spiral bevel gears with different inner diameters, which is rather troublesome. Moreover, if the set clamping force does not match the inner diameter of the spiral bevel gear, on the one hand, the clamping force is too small, which will cause the spiral bevel gear to move during the milling process, thereby reducing the milling accuracy. On the other hand, if the clamping force is too large, the limiting mechanism will be subjected to excessive force during the clamping of the spiral bevel gear, which will cause deformation and damage of the internal components of the limiting mechanism, thereby affecting the clamping accuracy.

[0006] To achieve the above object, the present invention provides the following technical solution: a high-precision spiral bevel gear automatic milling device, comprising a base, a limiting mechanism is provided on the top of the base, an adjusting mechanism is fixedly connected to the bottom of the limiting mechanism, a mounting frame is fixedly connected to the top of the base, and a milling mechanism is slidably connected to the mounting frame;

[0007] The limiting mechanism includes a mounting block, a support tube arranged in a vertical state is fixedly installed at the inner center position of the mounting block, the upper outer wall of the support tube is fixedly connected to a mounting plate, a plurality of slide grooves are evenly opened around the center of the circle inside the mounting plate, a hollow slide rod is slidably connected in each of the slide grooves, each of the hollow slide rods is fixedly connected to a first hollow block at one end away from the support tube, a second hollow block is sealed and slidably connected inside each of the first hollow blocks, a first spring is connected between the inside of each of the first hollow blocks and the opposite side of the corresponding second hollow block, and a rotating plate is rotatably connected to the top of the mounting plate.

[0008] Preferably, a piston cylinder is fixedly connected to the top of the first hollow block, a piston chamber is defined in the piston cylinder, a piston is sealingly and slidably connected in the piston chamber, a third spring is connected between the bottom of the piston and the bottom of the piston chamber, a piston rod is fixedly connected to the top of the piston, a pressure plate is fixedly connected to the top of the piston rod, an intake channel for driving the piston to reciprocate is defined in the piston cylinder, one end of the intake channel is connected to the piston chamber, and the other end of the intake channel is connected to the interior of the first hollow block.

[0009] Preferably, a hollow tube is fixedly connected to the interior of each slide groove, and each hollow tube is sealed and slidably connected to the interior of the corresponding hollow slide rod. The inner wall of the support tube is provided with a plurality of air inlet holes connected to the hollow tubes, and a one-way valve is arranged in the air inlet hole.

[0010] Preferably, the top of the rotating disk is provided with a plurality of guide grooves arranged in a through shape, and the interior of each of the guide grooves is slidably connected with a guide rod fixedly connected to the outer wall of the hollow sliding rod, the mounting disk and the rotating disk are both concentrically arranged with the support tube, the interior of the support tube is provided with a first annular groove above the air inlet, and the bottom of the rotating disk is provided with a second annular groove of the same size and corresponding position to the first annular groove, the first annular groove is connected to the second annular groove, a top block is slidably connected to the first annular groove, and the second annular groove is provided with a plurality of jacks connected to the support tube.

[0011] Preferably, a rotating rod is concentrically arranged inside the support tube, and a plurality of limiting sliding holes whose number is the same as that of the insertion holes and whose positions correspond to those of the insertion holes are opened on the upper outer wall of the rotating rod, a latch is slidably connected in each of the limiting sliding holes, and a second spring is connected between the other end of each of the latches and the corresponding limiting sliding hole, the latch is inserted into the insertion hole in an initial state, and the top block can push the latch to slide into the limiting sliding hole when it moves upward.

[0012] Preferably, a third annular groove is provided inside the support tube below the air inlet, a plurality of connecting holes are provided inside the support tube, one end of the connecting hole is connected to the first annular groove, and the other end of the connecting hole is connected to the third annular groove, an exhaust groove connected to the third annular groove is provided on the inner wall of the support tube, a magnetic sealing plate for sealing the exhaust groove is slidably connected inside the third annular groove, a block for preventing the magnetic sealing plate from sealing or opening the exhaust groove is fixedly connected inside the third annular groove, a magnetic ring for driving the block to rotate is fixedly connected to the outer wall of the rotating rod, a motor is fixedly connected to the inner center position of the mounting block, and an output end of the motor is fixedly connected to the rotating rod.

[0013] Preferably, a steering assembly for driving the mounting block to rotate is fixedly connected to the bottom of the mounting block, the interior of the mounting block is hollow, and the top of the mounting block is open, a plurality of balancing frames are fixedly mounted on the top of the mounting block, the plurality of balancing frames are arranged in a ring-shaped manner and equidistantly in sequence around the inner circumferential surface of the mounting block, and the tops of the plurality of balancing frames are flush with the top of the mounting block, and the mounting plate is located above the plurality of balancing frames.

[0014] Preferably, a guide plate is fixedly connected to the outer wall of the support tube, a plurality of leakage holes arranged in a through shape are opened on the outer wall of the mounting block, and a liquid storage cover connected to the plurality of leakage holes is fixedly connected to the outer wall of the mounting block, and a leakage plate is connected to the bottom of the liquid storage cover.

[0015] Preferably, the adjustment mechanism includes a translation slide slidably connected to the top of the base, a steering block fixedly connected to the steering assembly is rotatably installed inside the translation slide, one side of the translation slide is fixedly connected to a driving assembly for driving the steering block to rotate, and the milling mechanism includes a sliding assembly slidably connected to the mounting frame, one side of the sliding assembly is fixedly connected to a telescopic cylinder assembly, and one end of the telescopic cylinder assembly is fixedly connected to an electric tool.

[0016] A high-precision spiral bevel gear automated milling method comprises the following steps:

[0017] S1. First, fix the steering assembly inside the steering block so that the limiting mechanism as a whole remains in a vertical state and is installed on the top of the steering block;

[0018] S2, placing the workpiece on the top of the balance frame, driving the motor to rotate forward, so that the second hollow block and the pressing plate can limit and fix the workpiece in two directions;

[0019] S3, adjusting the overall horizontal position of the workpiece by driving the translation slide, and adjusting the inclination angle of the workpiece by the driving component;

[0020] S4, starting the sliding assembly to adjust the horizontal displacement of the electric tool, and starting the telescopic cylinder assembly to adjust the contact position between the electric tool and the workpiece, so that the electric tool can perform gear milling on the surface of the workpiece;

[0021] S5. After the gear milling is completed, the driving motor is reversed so that the second hollow block and the pressing plate return to the initial position, thereby releasing the limit on the workpiece.

[0022] Technical effects and advantages of the present invention:

[0023] 1. The present invention sets a limiting mechanism. When the spiral bevel gears with different inner diameters are limited and fixed, it is only necessary to set the motor according to the maximum inner diameter of the gear within the range that the device can reach. When the motor drives the limiting mechanism to reach the force used for the gear workpiece to limit the position, the rotating rod will automatically be in an idling state, and the clamping force will not be too large or too small. When the device clamps and fixes the spiral bevel gears with different inner diameters, the force on the gear can be more stable, which protects the device, thereby improving the clamping efficiency and milling accuracy of the device;

[0024] 2. The present invention provides a plurality of second hollow blocks, and drives the corresponding second hollow blocks to synchronously move equidistantly toward the outer peripheral direction of the mounting plate through a plurality of hollow slide bars and the first hollow blocks, so that the inner wall of the gear workpiece can be uniformly and synchronously limited by the plurality of second hollow blocks, so that the workpiece is subjected to uniform force, and can be used for limiting the position of gear workpieces of different sizes, thereby avoiding the problem of skewness of the workpiece, making the present device more universal and more convenient for practical use;

[0025] 3. The present invention sets a plurality of pressure plates so that the workpiece is limited and pressed by a plurality of second hollow blocks, and at the same time, the plurality of pressure plates can surround the inner circumferential surface of the workpiece and limit and engage in its vertical direction, thereby making the installation of the workpiece more stable and firm, and avoiding the problem of loosening and falling off during the processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0027] Figure 2 It is a schematic diagram of the structure of the adjusting mechanism and the gear milling mechanism of the present invention.

[0028] Figure 3 It is a schematic diagram of the structure of the limiting mechanism of the present invention.

[0029] Figure 4 It is a partial structural sectional view of the limiting mechanism of the present invention.

[0030] Figure 5 It is a schematic diagram of the installation of the mounting plate part of the present invention.

[0031] Figure 6 It is a cross-sectional view of the internal three-dimensional structure of the mounting plate part of the present invention.

[0032] Figure 7 It is a cross-sectional view of the internal planar structure of the mounting plate portion of the present invention.

[0033] Figure 8 For the present invention Figure 7 A magnified view of the structure of part A.

[0034] Fig. 9 For the present invention Figure 7 A magnified view of the structure of part B.

[0035] Fig.10 It is a schematic diagram of the exhaust groove part of the present invention.

[0036] The accompanying drawings are marked as follows: 1, base; 101, mounting frame; 2, limiting mechanism; 200, mounting block; 201, support tube; 202, mounting plate; 203, slide groove; 204, hollow slide rod; 205, first hollow block; 206, second hollow block; 207, first spring; 208, rotating plate; 209, guide groove; 210, guide rod; 211, piston cylinder; 212, piston chamber; 213, piston; 214, piston rod; 215, pressing plate; 216, air inlet channel; 217, hollow tube; 218, air inlet hole; 219, one-way valve; 220, first annular groove; 221, second annular groove; 222 , top block; 223, socket; 224, rotating rod; 225, limiting sliding hole; 226, latch; 227, second spring; 228, third annular groove; 229, connecting hole; 230, exhaust groove; 231, magnetic sealing plate; 232, stopper; 233, magnetic ring; 234, motor; 235, third spring; 24, steering assembly; 25, balance frame; 26, guide plate; 27, leakage hole; 28, liquid storage cover; 29, leakage plate; 3, adjustment mechanism; 31, translation slide; 32, steering block; 33, driving assembly; 4, milling gear mechanism; 41, sliding assembly; 42, telescopic cylinder assembly; 43, electric tool. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Embodiment 1

[0039] Refer to the instruction manual Figure 1-2 A high-precision spiral bevel gear automatic milling device according to an embodiment of the present invention comprises a base 1, a limiting mechanism 2 is provided on the top of the base 1, an adjusting mechanism 3 is fixedly connected to the bottom of the limiting mechanism 2, a mounting frame 101 is fixedly connected to the top of the base 1, and a milling mechanism 4 is slidably connected to the mounting frame 101;

[0040] Refer to the instruction manual Figure 3-6The limiting mechanism 2 includes a mounting block 200, a support tube 201 arranged in a vertical state is fixedly installed at the inner center position of the mounting block 200, a mounting plate 202 is fixedly connected to the upper outer wall of the support tube 201, a plurality of slide grooves 203 are evenly opened around the center of the circle inside the mounting plate 202, a hollow slide rod 204 is slidably connected in each slide groove 203, a first hollow block 205 is fixedly connected to one end of each hollow slide rod 204 away from the support tube 201, and a second hollow block 205 is sealed and slidably connected inside each first hollow block 205 06, the outward side of the second hollow block 206 is made of wear-resistant material, a first spring 207 is connected between the inside of each first hollow block 205 and the side opposite to the corresponding second hollow block 206, the top of the mounting plate 202 is rotatably connected with a rotating plate 208, the top of the rotating plate 208 is provided with a plurality of guide grooves 209 arranged in a through shape, and the inside of each guide groove 209 is slidably connected with a guide rod 210 fixedly connected to the outer wall of the hollow slide rod 204, the mounting plate 202 and the rotating plate 208 are both concentrically arranged with the support tube 201;

[0041] In actual use, the workpiece is stably placed on the top of multiple balance frames 25, and by rotating the rotating disk 208, multiple guide rods 210 drive multiple hollow slides 204 to slide synchronously in the corresponding slide grooves 203 under the limiting action of the corresponding guide grooves 209, and multiple hollow slides 204 synchronously drive the corresponding first hollow blocks 205 and second hollow blocks 206 to limit and press against the inner wall of the workpiece, so that the horizontal position of the workpiece is initially limited and fixed in a circular and equidistant state from its inner circumferential surface, thereby ensuring that the workpiece can automatically remain centered and stably placed during the initial limiting process, thereby avoiding the problem of the workpiece being skewed during the processing and affecting the processing progress.

[0042] refer to Figure 5-9 As shown, a piston cylinder 211 is fixedly connected to the top of the first hollow block 205, a piston chamber 212 is provided in the piston cylinder 211, a piston 213 is sealingly and slidably connected in the piston chamber 212, a third spring 235 is connected between the bottom of the piston 213 and the bottom of the piston chamber 212, a piston rod 214 is fixedly connected to the top of the piston 213, a pressure plate 215 is fixedly connected to the top of the piston rod 214, an air intake channel 216 for driving the piston 213 to reciprocate is provided in the piston cylinder 211, one end of the air intake channel 216 is communicated with the piston chamber 212, and the other end of the air intake channel 216 is communicated with the interior of the first hollow block 205, and the piston 213 is located at the top of the piston chamber 212 when in the initial position;

[0043] In actual use, air is injected into the corresponding piston chamber 212 through the air inlet channel 216, and the corresponding piston 213 simultaneously squeezes the third spring 235 to drive the piston rod 214 and the pressure plate 215 to move downward, so that the pressure plate 215 is limited and pressed against the top of the gear workpiece, so that the gear workpiece can be limited and fixed in the longitudinal direction of the workpiece in a circular and equidistant state from its inner circumferential surface. When adjusting the different inclination angles of the workpiece for processing, the workpiece is always stably fixed on the top of the mounting block 200, thereby avoiding the problem of the workpiece loosening and falling off during the processing.

[0044] Reference Figure 1 and 2 As shown, the adjustment mechanism 3 includes a translation slide 31 slidably connected to the top of the base 1, the translation slide 31 is internally rotatably installed with a steering block 32 fixedly connected to the steering assembly 24, one side of the translation slide 31 is fixedly connected to a driving assembly 33 for driving the steering block 32 to rotate, and the milling mechanism 4 includes a sliding assembly 41 slidably connected to the mounting frame 101, one side of the sliding assembly 41 is fixedly connected to a telescopic cylinder assembly 42, and one end of the telescopic cylinder assembly 42 is fixedly connected to an electric tool 43.

[0045] Reference Figure 3 and 4 As shown, the bottom of the mounting block 200 is fixedly connected with a steering assembly 24 for driving it to rotate, the interior of the mounting block 200 is arranged in a hollow state, and the top of the mounting block 200 is arranged in an open state, and a plurality of balancing frames 25 are fixedly installed on the top of the mounting block 200, and the plurality of balancing frames 25 are arranged in a ring-shaped manner and equidistantly in sequence around the inner circumferential surface of the mounting block 200, and the tops of the plurality of balancing frames 25 are flush with the top of the mounting block 200, and the mounting plate 202 is located above the plurality of balancing frames 25.

[0046] Reference Figure 3 and 4 As shown, the outer wall of the support tube 201 is fixedly connected with a guide plate 26, the outer wall of the mounting block 200 is provided with a plurality of leakage holes 27 arranged in a through shape, and the outer wall of the mounting block 200 is fixedly connected with a liquid storage cover 28 connected with the plurality of leakage holes 27, and the bottom of the liquid storage cover 28 is connected with a leakage plate 29.

[0047] In actual use, the liquid storage cover 28 is used to collect the cooling waste water generated during the milling and cooling process of the workpiece, and pour it out uniformly through the leakage plate 29, so that the generated cooling waste water can be filtered and reused, saving resources.

[0048] Embodiment 2

[0049] During actual use, when limiting and fixing spiral bevel gears with different inner diameters, it is necessary to reset the clamping force of the spiral bevel gear each time according to the inner diameter of the spiral bevel gear, which is rather troublesome. Furthermore, if the set clamping force does not match the inner diameter of the spiral bevel gear, on the one hand, too small a clamping force may cause the spiral bevel gear to move during the milling process, thereby reducing the milling accuracy. On the other hand, too large a clamping force may cause excessive force on the limiting mechanism 2 during the clamping of the spiral bevel gear, causing deformation and damage to the components in the limiting mechanism 2, thereby affecting the clamping accuracy. Therefore, this embodiment improves the device described in the above embodiment.

[0050] refer to Figure 6-10As shown, each slide groove 203 is fixedly connected to a hollow tube 217, each hollow tube 217 is sealed and slidably connected to the inside of the corresponding hollow slide rod 204, the inner wall of the support tube 201 is provided with a plurality of air inlet holes 218 connected to the hollow tubes 217, and a one-way valve 219 is arranged in the air inlet hole 218. The support tube 201 is provided with a first annular groove 220 above the air inlet hole 218, and the bottom of the rotating disk 208 is provided with a second annular groove 221 of the same size and corresponding position as the first annular groove 220, and the first annular groove 220 and the second annular groove 221 are connected to each other. 221 is connected, a top block 222 is slidably connected in the first annular groove 220, the top of the top block 222 is made of wear-resistant material, and when the top block 222 moves upward, it can push the latch 226 to slide into the limiting sliding hole 225, and the inner side of the top of the top block 222 is an inclined surface, and a plurality of plug holes 223 connected to the support tube 201 are opened in the second annular groove 221, and a rotating rod 224 is concentrically arranged inside the support tube 201, and a plurality of limiting sliding holes 225 with the same number and corresponding positions as the plug holes 223 are opened on the upper outer wall of the rotating rod 224, and each limiting sliding hole 225 is slidably connected to the first annular groove 220, and the top of the top block 222 is made of wear-resistant material, and the top block 222 can push the latch 226 to slide into the limiting sliding hole 225 when it moves upward, and the inner side of the top of the top block 222 is an inclined surface, and a plurality of plug holes 223 connected to the support tube 201 are opened in the second annular groove 221, and a rotating rod 224 is concentrically arranged inside the support tube 201, and a plurality of limiting sliding holes 225 with the same number and corresponding positions as the plug holes 223 are opened on the upper outer wall of the rotating rod 224, and each limiting sliding hole 225 is slidably connected to the first annular groove 220, and the first annular groove 220 ... A latch 226 is connected, and one end of each latch 226 close to the support tube 201 is a cylindrical head. A second spring 227 is connected between the other end of each latch 226 and the corresponding limiting sliding hole 225. The latch 226 is inserted into the insertion hole 223 in the initial state. A third annular groove 228 is opened inside the support tube 201 below the air inlet hole 218. A plurality of connecting holes 229 penetrating the air inlet hole 218 are opened inside the support tube 201. One end of the connecting hole 229 is connected to the first annular groove 220, and the other end of the connecting hole 229 is connected to the third annular groove 228. The inner wall of the support tube 201 is provided with an exhaust groove 230 connected to the third annular groove 228, and the inner part of the third annular groove 228 is slidably connected with a magnetic sealing plate 231 for sealing the exhaust groove 230, and the inner part of the third annular groove 228 is fixedly connected with a block 232 for blocking the magnetic sealing plate 231 from sealing or opening the exhaust groove 230, and the outer wall of the rotating rod 224 is fixedly connected with a magnetic ring 233 for driving the block 232 to rotate, and a motor 234 is fixedly connected at the inner center position of the mounting block 200, and the output end of the motor 234 is fixedly connected to the rotating rod 224.

[0051] In actual use, first fix the steering assembly 24 inside the steering block 32 so that the limiting mechanism 2 is installed on the top of the steering block 32 in a vertical state as a whole, and then place the workpiece on the top of the balance frame 25;

[0052] The driving motor 234 drives the rotating rod 224 to rotate forward in the support tube 201. Since the latch 226 is inserted into the insertion hole 223 in the initial state, the rotating rod 224 drives the rotating disk 208 to rotate forward through multiple latches 226, so that the multiple guide rods 210 drive the multiple hollow slide rods 204 to slide outward in the corresponding slide grooves 203 synchronously under the limiting effect of the corresponding guide grooves 209. Since each hollow tube 217 is sealed and slidably connected to the inside of the corresponding hollow slide rod 204, During the sliding of the hollow slide bar 204, external air is drawn into the hollow slide bar 204 and the hollow tube 217 through the one-way valve 219 and the air inlet 218, so as to prevent the hollow slide bar 204 from being unable to move due to the seal. At the same time, the air inside the hollow slide bar 204, the hollow tube 217 and the first hollow block 205 can be replenished synchronously with the movement of the hollow slide bar 204, so that the gas pressure inside the hollow slide bar 204, the hollow tube 217 and the first hollow block 205 remains unchanged;

[0053] The plurality of hollow slide bars 204 synchronously drive the corresponding first hollow block 205 and the second hollow block 206 to move toward the inner wall of the gear workpiece. When the second hollow block 206 contacts the inner wall of the gear workpiece, the second hollow block 206 squeezes the first spring 207 to slide into the first hollow block 205. At this time, the plurality of second hollow blocks 206 are limited and pressed against the inner wall of the workpiece, thereby preliminarily limiting and fixing the inner circumferential surface of the workpiece in a circular state of equidistant sequence;

[0054] At the same time, due to the setting of the one-way valve 219, at this time, the air inside the first hollow block 205 squeezed by the second hollow block 206 cannot be discharged through the air inlet hole 218, and part of the air inside the first hollow block 205 will enter the corresponding piston chamber 212 through the air inlet channel 216, so that the corresponding piston 213 squeezes the third spring 235 to drive the piston rod 214 and the pressure plate 215 to move downward, so that the pressure plate 215 is limited and pressed against the top of the gear workpiece, so that the gear workpiece can be limited and fixed in the longitudinal direction of the workpiece in a circular and equidistant state from its inner circumferential surface;

[0055] Another part of the air inside the first hollow block 205 will enter the first annular groove 220 through the hollow slide bar 204, the hollow tube 217, the air inlet hole 218 and the connecting hole 229, thereby pushing the top block 222 to move upward. During the upward movement of the top block 222, the inclined surface of the top block 222 will contact the cylindrical head of the latch pin 226, thereby pushing the latch pin 226 to squeeze the second spring 227 to slide in the limiting slide hole 225 and slide out of the insertion hole 223, thereby failing to continue to drive the rotating disk 208 to rotate. At the same time, the top of the top block 222 contacts the top of the second annular groove 221. Since the top of the top block 222 is made of wear-resistant material, the rotating disk 208 cannot continue to rotate. At this time, the motor 234 drives the rotating rod 224 to be in an idling state, and cannot interfere with the limiting of the workpiece, thereby completing the two-way limiting of the workpiece.

[0056] Then, the overall horizontal position of the workpiece is adjusted by driving the translation slide 31, the inclination angle of the workpiece is adjusted by the driving assembly 33, the sliding assembly 41 is started to adjust the horizontal displacement of the electric tool 43, and the telescopic cylinder assembly 42 is started to adjust the contact position between the electric tool 43 and the workpiece, so that the electric tool 43 can perform gear milling on the surface of the workpiece;

[0057] After the tooth milling is completed, the motor 234 is driven to reverse, and the motor 234 drives the rotating rod 224 to reverse. First, the rotating rod 224 will drive the magnetic ring 233 to drive the magnetic sealing plate to open the exhaust groove 230 under the action of magnetic force. It should be noted that when the rotating rod 224 rotates forward, the rotating rod 224 will drive the magnetic ring 233 to drive the magnetic sealing plate 231 to rotate forward in the third annular groove 228 under the action of magnetic force. Under the limiting action of the stopper 232, the magnetic sealing plate 231 will stay on the exhaust groove 230 to block the exhaust groove 230. When the exhaust groove 230 is opened, the air in the piston chamber 212 and the first annular groove 220 is The pressure plate 215 loses the limit on the top of the gear under the thrust of the third spring 235, and the top block 222 slides down inside the first annular groove 220 and returns to the initial position. At this time, during the reversal of the rotating rod 224, the latch 226 is reinserted into the corresponding socket 223 under the thrust of the second spring 227, thereby driving the rotating disk 208 to reverse, so that the hollow slide rod 204, under the action of the guide rod 210 and the guide groove 209, brings the first hollow block 205 and the second hollow block 206 back to the initial position, thereby releasing the limit on the workpiece.

[0058] To sum up, when limiting and fixing spiral bevel gears with different inner diameters, it is only necessary to set the motor 234 according to the largest gear inner diameter within the range that the device can reach. When the motor 234 drives the limiting mechanism 2 to reach the force used to limit the gear workpiece, the rotating rod 224 will automatically be in an idling state, and the clamping force will not be too large or too small. When the device clamps and fixes spiral bevel gears with different inner diameters, the force on the gear can be more stable, which protects the device and improves the clamping efficiency and milling accuracy of the device.

[0059] Embodiment 3

[0060] A high-precision spiral bevel gear automated milling method comprises the following steps:

[0061] S1. First, fix the steering assembly 24 inside the steering block 32 so that the limiting mechanism 2 is installed on the top of the steering block 32 in a vertical state as a whole;

[0062] S2, placing the workpiece on the top of the balance frame 25, driving the motor 234 to rotate forward, so that the second hollow block 206 and the pressing plate 215 can perform bidirectional limiting and fixing on the workpiece;

[0063] S3, adjusting the overall horizontal position of the workpiece by driving the translation slide 31, and adjusting the inclination angle of the workpiece by the driving component 33;

[0064] S4, start the slide assembly 41 to adjust the horizontal displacement of the electric tool 43, start the telescopic cylinder assembly 42 to adjust the contact position between the electric tool 43 and the workpiece, so that the electric tool 43 can perform gear milling on the surface of the workpiece;

[0065] S5. After the gear milling is completed, the driving motor 234 is reversed, so that the second hollow block 206 and the pressing plate 215 return to the initial position, and the position limit on the workpiece is released.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-precision spiral bevel gear automatic milling device, comprising a base, characterized in that: A limiting mechanism is provided on the top of the base, an adjusting mechanism is fixedly connected to the bottom of the limiting mechanism, a mounting frame is fixedly connected to the top of the base, and a milling gear mechanism is slidably connected to the mounting frame; The limiting mechanism includes a mounting block, a support tube arranged in a vertical state is fixedly installed at the inner center position of the mounting block, the upper outer wall of the support tube is fixedly connected to a mounting plate, a plurality of slide grooves are evenly opened around the center of the circle inside the mounting plate, a hollow slide rod is slidably connected in each of the slide grooves, each of the hollow slide rods is fixedly connected to a first hollow block at one end away from the support tube, each of the first hollow blocks is sealed and slidably connected to a second hollow block inside, a first spring is connected between the inside of each of the first hollow blocks and the opposite side of the corresponding second hollow block, and the top of the installation is rotatably connected to a rotating plate.

2. A high-precision spiral bevel gear automatic milling device according to claim 1, characterized in that: A piston cylinder is fixedly connected to the top of the first hollow block, a piston chamber is defined in the piston cylinder, a piston is sealingly and slidably connected to the piston chamber, a third spring is connected between the bottom of the piston and the bottom of the piston chamber, a piston rod is fixedly connected to the top of the piston, a pressure plate is fixedly connected to the top of the piston rod, an intake channel for driving the piston to reciprocate is defined in the piston cylinder, one end of the intake channel is connected to the piston chamber, and the other end of the intake channel is connected to the interior of the first hollow block.

3. The high-precision spiral bevel gear automatic milling device according to claim 1, characterized in that: A hollow tube is fixedly connected to the interior of each slide groove, and each hollow tube is sealingly and slidably connected to the interior of the corresponding hollow slide rod. The inner wall of the support tube is provided with a plurality of air inlet holes connected to the hollow tubes, and a one-way valve is arranged in the air inlet hole.

4. The high-precision spiral bevel gear automatic milling device according to claim 1, characterized in that: The top of the rotating disk is provided with a plurality of guide grooves which are arranged in a through shape, and the inside of each guide groove is slidably connected with a guide rod fixedly connected to the outer wall of the hollow sliding rod, the mounting disk and the rotating disk are both arranged concentrically with the support tube, the inside of the support tube is provided with a first annular groove above the air inlet, and the bottom of the rotating disk is provided with a second annular groove which is the same size and corresponding in position to the first annular groove, the first annular groove is connected with the second annular groove, a top block is slidably connected in the first annular groove, and the second annular groove is provided with a plurality of jacks which are connected with the support tube.

5. The high-precision spiral bevel gear automatic milling device according to claim 1, characterized in that: A rotating rod is concentrically arranged inside the support tube, and a plurality of limiting sliding holes whose number is the same as that of the insertion holes and whose positions correspond to those of the insertion holes are opened on the upper outer wall of the rotating rod. A latch is slidably connected in each of the limiting sliding holes, and a second spring is connected between the other end of each of the latches and the corresponding limiting sliding hole. The latch is inserted into the insertion hole in an initial state, and the top block can push the latch to slide into the limiting sliding hole when it moves upward.

6. The high-precision spiral bevel gear automatic milling device according to claim 1, characterized in that: A third annular groove is provided inside the support tube below the air inlet, a plurality of connecting holes are provided inside the support tube, one end of the connecting hole is connected with the first annular groove, and the other end of the connecting hole is connected with the third annular groove, an exhaust groove connected with the third annular groove is provided on the inner wall of the support tube, a magnetic sealing plate for sealing the exhaust groove is slidably connected inside the third annular groove, a block for preventing the magnetic sealing plate from sealing or opening the exhaust groove is fixedly connected inside the third annular groove, a magnetic ring for driving the block to rotate is fixedly connected to the outer wall of the rotating rod, a motor is fixedly connected at the inner center position of the mounting block, and an output end of the motor is fixedly connected to the rotating rod.

7. The high-precision spiral bevel gear automatic milling device according to claim 1, characterized in that: The bottom of the mounting block is fixedly connected with a steering assembly for driving the mounting block to rotate, the interior of the mounting block is hollow, and the top of the mounting block is open, and a plurality of balancing frames are fixedly mounted on the top of the mounting block, and the plurality of balancing frames are arranged in a ring-shaped manner and equidistantly in sequence around the inner circumferential surface of the mounting block, and the tops of the plurality of balancing frames are flush with the top of the mounting block, and the mounting plate is located above the plurality of balancing frames.

8. The high-precision spiral bevel gear automatic milling device according to claim 1, characterized in that: The outer wall of the support tube is fixedly connected with a guide plate, the outer wall of the mounting block is provided with a plurality of leakage holes arranged in a through shape, and the outer wall of the mounting block is fixedly connected with a liquid storage cover connected with the plurality of leakage holes, and the bottom of the liquid storage cover is connected with a leakage plate.

9. The high-precision spiral bevel gear automatic milling device according to claim 1, characterized in that: The adjustment mechanism includes a translation slide slidably connected to the top of the base, a steering block fixedly connected to the steering assembly is rotatably installed inside the translation slide, a driving assembly for driving the steering block to rotate is fixedly connected to one side of the translation slide, and the milling mechanism includes a sliding assembly slidably connected to the mounting frame, a telescopic cylinder assembly is fixedly connected to one side of the sliding assembly, and an electric tool is fixedly connected to one end of the telescopic cylinder assembly.

10. A high-precision spiral bevel gear automatic milling method, using a high-precision spiral bevel gear automatic milling device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. First, fix the steering assembly inside the steering block so that the limiting mechanism as a whole remains in a vertical state and is installed on the top of the steering block; S2, placing the workpiece on the top of the balance frame, driving the motor to rotate forward, so that the second hollow block and the pressing plate can limit and fix the workpiece in two directions; S3, adjusting the overall horizontal position of the workpiece by driving the translation slide, and adjusting the inclination angle of the workpiece by the driving component; S4, starting the sliding assembly to adjust the horizontal displacement of the electric tool, and starting the telescopic cylinder assembly to adjust the contact position between the electric tool and the workpiece, so that the electric tool can perform gear milling on the surface of the workpiece; S5. After the gear milling is completed, the driving motor is reversed so that the second hollow block and the pressing plate return to the initial position, thereby releasing the limit on the workpiece.

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