A universal gear processing equipment

Abstract

The present invention relates to the field of gear burr grinding and processing equipment, and in particular to a universal gear processing equipment, including a grinding power chassis, and also including a clamping mechanism rotatably connected to the grinding power chassis, the clamping mechanism including a chuck, the peripheral wall of the chuck is provided with an oil hole one along its radial direction, and the oil hole one is distributed in a pair along the axial direction of the chuck. The clamping mechanism of the universal gear processing equipment combines the advantages of existing pneumatic chucks and hydraulic chucks. The driving part of the device can make full use of the working characteristics of compressed gas through the design of cover plate 2, airbag and adapter plate, provide reliable and convenient initial pressure for the chuck, and further amplify the thrust on the clamping claw through a very compact jack structure composed of a piston rod and a bearing piston, so as to achieve reliable clamping performance. The clamping mechanism realizes the convenience and quick action of pneumatic operation, and also realizes the high clamping force of hydraulic drive.

Description

Technical Field

[0001] The invention relates to the field of gear burr grinding processing equipment, in particular to universal gear processing equipment. Background Art

[0002] After gear processing, burrs will be left on both sides of the tooth groove. There are generally three ways to remove gear burrs: manual grinding, machine grinding and CNC grinding. However, no matter which treatment method is used, they all have one thing in common, which is that they require tooling or equipment to be able to accurately and repeatedly clamp the gears. If the repeated clamping accuracy is not enough, it may cause damage to the gear surface and affect the product appearance. In severe cases, it may cause deviations in the size of the processed gear.

[0003] Since the gear teeth are deburred, they are usually fixed through the shaft hole in the middle of the gear. There are currently two main ways to fix the shaft hole of the gear: one is tensioning, which uses a spring barrel or a petal-shaped structure to enter the gear shaft hole, and uses a conical part to open the spring barrel or petal-shaped structure to achieve the purpose of tensioning the gear. The advantage of the tensioning structure is that it has a very high repeatability clamping accuracy, but the disadvantage is that the scope of application is extremely narrow. For example, a spring barrel suitable for an 8mm shaft hole can generally only be used for an 8mm shaft hole, while a 7.5mm or 8.5mm shaft hole requires a replacement of an adapted spring barrel to be assembled, and The taper, diameter, length and other parameters of the tensioning structure are different between tensioning devices of different systems, so tensioning is generally used for high-precision mass production. Another way is to use the jaws of the chuck to clamp the gear shaft hole. The jaws of an ordinary chuck are driven by a thread to move synchronously. Due to the processing accuracy of the chuck and the jaws, the current ordinary chucks are used, such as general turning, and the process requires that the required processing be completed with one clamping, and secondary clamping should be avoided as much as possible (high-precision high-end CNC chucks are expensive, and their functional value positioning is not suitable for conventional gear deburring processing).

[0004] In summary, gear deburring and grinding processing equipment requires special parts for tightening assembly, and the tightening tool has a narrow application range and inconvenient operation to change specifications. The commonly used ordinary chuck for clamping has low repeat positioning accuracy and processing errors. In order to optimize the above problems, a universal gear processing equipment is proposed. Summary of the invention

[0005] In view of the above or prior art problems of the tensioning assembly and chuck assembly commonly used in gear deburring and grinding, which respectively have the problems of unchanged specifications and relatively low repeated clamping accuracy, the present invention is proposed.

[0006] Therefore, an object of the present invention is to provide a universal gear machining apparatus.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a universal gear processing equipment, including a grinding power chassis, and also including a clamping mechanism rotatably connected to the grinding power chassis, the clamping mechanism including a chuck, the chuck peripheral wall is provided with three groups of oil holes along its radial direction, and each group of the oil holes is provided with two, and the multiple groups of the oil holes are distributed in an annular array with respect to the chuck, each of the oil holes is sealed and slidably sleeved with a load-bearing piston, the middle part of the chuck is hollowed out, and the middle part of the chuck is sleeved with three clamping jaws, and the three clamping jaws are distributed in an annular array with respect to the central axis of the chuck, a total of two load-bearing pistons in two oil holes in a single group are vertically fixedly connected to one clamping jaw, an oil groove is provided between the two oil holes in the same group, and the outer wall of the chuck The oil holes in a single group are all sealed with a cover plate 1; the chuck is located at one end of the grinding power chassis and is parallel to the central axis thereof. Three oil holes 2 are opened, which are arranged in a circular array about the chuck, and an oil hole 2 is arranged between two adjacent jaws, a piston rod is slidably inserted in the oil hole 2, and an oil channel is arranged between the bottom of the oil hole 2 and the oil groove; the chuck is coaxially provided with a cover plate 2 at one end of the grinding power chassis, a transfer plate is coaxially provided on the side of the cover plate 2 away from the chuck, and the middle part of the cover plate 2 is spherically convex toward the chuck, an air bag is sleeved on the inner concave part of the cover plate 2, the air bag is sealed and connected with an air joint, and the air joint and the air bag can clamp the transfer plate along the axial direction of the transfer plate, and the piston rods are fixedly connected to the transfer plate.

[0008] As a preferred solution of the universal gear processing equipment of the present invention, one end of the clamping jaw extends to the outside of the chuck in a direction away from the second cover plate, and a vertical cross-sectional profile of a section of the clamping jaw located outside the chuck along its width direction is an isosceles triangle, the connection between its two waistlines points to the axis of the chuck and is provided with a chamfer, and the two ends of the two waistlines that are away from each other are provided with arc angles.

[0009] As a preferred solution of the universal gear processing equipment of the present invention, the diameter of the second oil hole is smaller than that of the first oil hole, and the length of the piston rod is greater than the depth of the second oil hole.

[0010] As a preferred solution of the universal gear processing equipment of the present invention, wherein: the peripheral wall of the adapter plate is provided with a clearance groove between adjacent piston rods, and the end surface of the chuck is fixedly connected with a short column corresponding to the clearance groove, the short column passes through the clearance groove, and a rotary support is fixedly connected between the short columns.

[0011] As a preferred solution of the universal gear processing equipment of the present invention, the short column is connected to the inner ring of the slewing support, and the outer ring of the slewing support is fixedly connected to the shell of the grinding power chassis, and the grinding power chassis is provided with a driving gear that matches and meshes with the inner wall of the inner ring of the slewing support.

[0012] As a preferred solution of the universal gear processing equipment of the present invention, the middle part of the adapter plate is convex in a truncated cone shape toward the airbag, and the convex part in the middle part of the adapter plate can be matched and sleeved in the inner concave part of the second cover plate.

[0013] As a preferred solution of the universal gear processing equipment of the present invention, a spring is arranged between the cover plate 1 and the bearing piston, and the diameter of the spring is smaller than the oil hole 1, and the two ends of the spring are coaxially sleeved with the cover plate 1 and the bearing piston respectively.

[0014] As a preferred solution of the universal gear processing equipment of the present invention, wherein: the end surface of the chuck located away from the second cover plate is vertically connected with a positioning screw, and the positioning screws are distributed in a ring array with respect to the chuck.

[0015] As a preferred solution of the universal gear processing equipment of the present invention, the space between the oil hole 2 and the oil hole 1 is filled with hydraulic oil.

[0016] As a preferred solution of the universal gear processing equipment of the present invention, the clamping jaw is fixedly sleeved with a workpiece gear, the grinding power chassis is also provided with a grinding output shaft, the grinding output shaft is fixedly sleeved with a pair of grinding wheels, and the grinding wheels are closely distributed on both sides of the workpiece gear.

[0017] Beneficial effects of the universal gear processing equipment of the present invention:

[0018] The clamping mechanism of this universal gear processing equipment combines the advantages of existing pneumatic chucks and hydraulic chucks. The driving part of the device can make full use of the working characteristics of compressed air through the design of cover plate 2, airbag and adapter plate to provide reliable and convenient initial pressure for the chuck, and further amplify the thrust on the clamping claw through the very compact jack structure composed of piston rod and bearing piston to achieve reliable clamping performance. The clamping mechanism realizes the convenience and quick action of pneumatic operation and the high clamping force of hydraulic drive.

[0019] The clamping mechanism of the universal gear processing equipment configures a double load-bearing piston for each clamping jaw, fully utilizes the limited volume of the chuck to expand the sum of the effective working areas of the load-bearing pistons, thereby improving the clamping force of the clamping jaw. The load-bearing piston also determines the unique degree of freedom of the clamping jaw, so that the clamping jaw has high structural stability and working accuracy, and the structure is simple and the cost is controllable, which solves the problem of reduced repeated clamping accuracy of ordinary chucks. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a schematic diagram of the overall structure of universal gear processing equipment.

[0022] Figure 2 It is a schematic diagram of the assembly structure of the processed gear and the clamping jaws of the universal gear processing equipment.

[0023] Figure 3 For general purpose gear processing equipment Figure 2 A is an enlarged view of the structure.

[0024] Figure 4 It is a schematic diagram of the assembly structure of the clamping mechanism and slewing support of universal gear processing equipment.

[0025] Figure 5 This is a disassembled diagram of the assembly structure of the clamping mechanism and slewing support of a universal gear processing equipment.

[0026] Figure 6 This is a structural breakdown diagram of the clamping mechanism of universal gear processing equipment.

[0027] Figure 7 It is a sectional view of the clamping mechanism of a universal gear processing equipment along the axial plane.

[0028] Figure 8 These are three-segment cross-sectional views of the clamping mechanism of a universal gear processing equipment along its radial plane.

[0029] Fig. 9 This is a schematic diagram of the structure of the clamping mechanism of a universal gear processing equipment dissected along the direction of its internal oil channel.

[0030] In the figure: 100, grinding power chassis; 101, slewing support; 102, driving gear; 103, grinding output shaft; 104, grinding wheel; 105, short column; 200, clamping mechanism; 201, chuck; 202, bearing piston; 203, clamping claw; 204, cover plate 1; 205, piston rod; 206, cover plate 2; 207, air bag; 208, air joint; 209, adapter plate; 210, spring; 211, positioning screw; 201a, oil hole 1; 201b, oil groove; 201c, oil hole 2; 201d, oil channel; 209a, air avoidance groove; 300, workpiece gear. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0032] Example 1, reference Figure 1 to Figure 9 , which is the first embodiment of the present invention, provides a universal gear processing equipment, which can achieve the effect of quickly assembling gears through gear shaft holes and has high repeated clamping accuracy. It includes a grinding power chassis 100, and also includes a clamping mechanism 200 rotatably connected to the grinding power chassis 100, the clamping mechanism 200 includes a chuck 201, such as Figure 7 As shown, the peripheral wall of the chuck 201 is provided with three groups of oil holes 201a along its radial direction, and each group of oil holes 201a is provided with two, and the multiple groups of oil holes 201a are distributed in an annular array with respect to the chuck 201, and a load-bearing piston 202 is sealed and slidably sleeved in each oil hole 201a, and the middle part of the chuck 201 is hollowed out and through-set, and three clamping jaws 203 are sleeved in the middle part of the chuck 201, and the three clamping jaws 203 are distributed in an annular array with respect to the central axis of the chuck 201, and a total of two load-bearing pistons 202 in two oil holes 201a in a single group are vertically fixedly connected to one clamping jaw 203, and an oil groove 201b is provided between the two oil holes 201a in the same group, and a cover plate 204 is sealed and provided at the oil holes 201a of the single group on the outer wall of the chuck 201; the chuck 201 is located at one end of the grinding power chassis 100 and is parallel to the central axis thereof. The oil hole 201c is arranged in a circular array about the chuck 201, and one oil hole 201c is arranged between two adjacent jaws 203. A piston rod 205 is inserted and slidably sealed in the oil hole 201c, and an oil passage 201d is arranged between the bottom of the oil hole 201c and the oil groove 201b. The chuck 201 is coaxially provided with a cover plate 206 at one end of the grinding power chassis 100. A transfer plate 209 is coaxially arranged on one side of the cover plate 206 away from the chuck 201, and the middle part of the cover plate 206 is spherically convex toward the chuck 201, and an air bag 207 is sleeved on the concave part of the cover plate 206, and the air bag 207 is sealed with an air joint 208, and the air joint 208 and the air bag 207 can clamp the transfer plate 209 along the axial direction of the transfer plate 209, and the piston rod 205 is fixedly connected to the transfer plate 209.

[0033] Specifically, Figure 1 As shown, the clamping jaw 203 is fixedly sleeved with a workpiece gear 300, and the grinding power chassis 100 is also provided with a grinding output shaft 103. The grinding output shaft 103 is fixedly sleeved with a pair of grinding wheels 104, and the grinding wheels 104 are closely distributed on both sides of the workpiece gear 300. The present invention mainly proposes a gear assembly structure for gear burr grinding equipment, and other parts are only for example purposes, and the specific configuration needs to be determined according to the actual equipment.

[0034] Further, such as Figure 7 As shown, the diameter of the second oil hole 201c is smaller than the first oil hole 201a, the length of the piston rod 205 is greater than the depth of the second oil hole 201c, and the space between the second oil hole 201c and the first oil hole 201a is filled with hydraulic oil in order to form the structure and effect of a jack; Figure 1 and Figure 5 As shown, an example is given of how the clamping mechanism 200 is rotatably connected to the grinding power chassis 100, the peripheral wall of the adapter plate 209 is provided with a clearance groove 209a between adjacent piston rods 205, and a short column 105 is fixedly connected to the end surface of the chuck 201 corresponding to the clearance groove 209a, the short column 105 passes through the clearance groove 209a, and a slewing support 101 is fixedly connected between the short columns 105, the short column 105 is connected to the inner ring of the slewing support 101, and the outer ring of the slewing support 101 is fixedly connected to the shell of the grinding power chassis 100, and the grinding power chassis 100 is provided with a driving gear 102 that matches and meshes with the inner wall of the inner ring of the slewing support 101; Figure 5 and Figure 6 As shown, the middle part of the adapter plate 209 is convex in a truncated cone shape toward the airbag 207, and the convex part of the middle part of the adapter plate 209 can be matched and sleeved in the concave part of the cover plate 206; Figure 7 and Figure 8 As shown, a spring 210 is provided between the cover plate 204 and the bearing piston 202, and the diameter of the spring 210 is smaller than the oil hole 201a. The two ends of the spring 210 are coaxially sleeved with the cover plate 204 and the bearing piston 202, respectively. The purpose of this design is to allow the clamping jaw 203 to return and close, while preventing the spring 210 from scratching the inner wall of the oil hole 201a during movement; Figure 4 As shown, the end face of the chuck 201 located away from the cover plate 206 is vertically connected with a positioning screw 211, and the positioning screws 211 are distributed in a circular array with respect to the chuck 201. By adjusting the length of the positioning screws 211 extending out of the chuck 201, it can be used to position the workpiece gear 300 relative to the clamp 203, thereby aligning the workpiece gear 300 with the grinding wheel 104.

[0035] The working principle and advantages of the device are further explained in combination with the prior art: there are three main driving forms of chucks in the prior art, one is to manually insert a hexagonal wrench into the slot and rotate to control the retraction or expansion of the clamping jaws, the other is pneumatic control, using compressed air to drive the clamping jaws, and the third is to drive the clamping jaws by hydraulic pressure. Among them, manually operated chucks are common in general processing occasions. Both clamping and loosening require manual operation, which is relatively cumbersome, and the size of the tightening force depends on the worker's feel. Pneumatically controlled chucks move quickly and are often used in batch processing where quick parts replacement is required. In such processing occasions, the requirements for repeated assembly accuracy of workpieces are often relatively low, and processing speed and efficiency are the main focus. Hydraulic chucks have a high manufacturing cost and have extremely strong clamping force. They are often used for large and heavy workpiece processing and high-precision CNC automated machining. Hydraulic chucks are often large in size and expensive.

[0036] The present invention proposes a universal gear processing equipment, and in particular, provides a clamping mechanism 200 for gear burr grinding processing. The execution components of the clamping mechanism 200 are mainly composed of a chuck 201 and a clamping claw 203. The driving components of the clamping mechanism 200 are mainly composed of an air bag 207, a piston rod 205 and a bearing piston 202. Compressed gas is used as the initial source of driving force. This is because the pressure energy of compressed gas is relatively convenient and fast to manufacture, store and transmit compared to hydraulic energy. The compressed gas manufactured by an air compressor is more suitable for long-distance transportation to the gear grinding processing equipment at various workstations. However, the working characteristic of compressed gas pushing the piston is that F (pressure) = P (pressure) multiplied by S (force area). When the pressure provided by the compressed gas remains unchanged, the pushed The larger the diameter of the moving piston, the stronger the thrust output by the piston. Therefore, in the extremely limited volume of the chuck 201, it is obvious that the clamping force obtained by directly driving the small volume piston to drive the clamping jaws 203 to move through the compressed gas is relatively weak. Therefore, in the driving component of the device, the airbag 207 with a larger inner wall area receives compressed gas to expand, and a relatively reliable thrust to the adapter plate 209 is first obtained through the expansion of the airbag 207, and then the thinner piston rod 205 is driven to move through the adapter plate 209. The piston rod 205 and the thicker load-bearing piston 202 form a jack structure to further amplify the thrust of the airbag 207, so that the clamping jaws 203 can quickly and powerfully clamp the workpiece gear 300 through the load-bearing piston 202.

[0037] To achieve the above-mentioned target functions, the device also involves the following technical details:

[0038] First, if Figure 5 and Figure 6As shown, the device is provided with a second cover plate 206 between the airbag 207 and the chuck 201. The second cover plate 206 is punched with a spherical concave shape. The concave shape plays two roles when the airbag 207 is expanded. First, the inner wall of the second cover plate 206 and the outer wall of the airbag 207 are in contact with each other and the airbag 207 is isolated from the chuck 201. When the airbag 207 is expanded, the force on one side of the chuck 201 is uniform, thereby avoiding damage caused by excessive local pressure. Second, the cover plate is in the airbag 207. When the airbag 207 expands, it can limit and stabilize the expansion direction of the airbag 207. When the airbag 207 expands and fits and squeezes the inner wall of the second cover plate 206, the airbag 207 is limited by the second cover plate 206 and expands mainly in the direction of the adapter plate 209, so that the adapter plate 209 drives the piston rod 205 to obtain a higher stroke. In addition, the concave part of the second cover plate 206 fits and sleeves with the outer wall of the airbag 207, which can prevent the airbag 207 from deviating from its position and stabilize the posture of the airbag 207.

[0039] Secondly, the shape design of the cover plate 206 has benefits as well as side effects (here we assume that the adapter plate 209 is a flat plate). When the airbag 207 is exhausted and enters a deflated state, the clamping claw 203 resets the piston rod 205 to retract the piston rod 205 into the oil hole 201c until the piston rod 205 drives the edge of the adapter plate 209 to contact the chuck 201. At this time, due to the concave shape of the cover plate 206, a large gap will be caused between the deflated airbag 207 and the cover plate 206. To further illustrate this problem, from another stage, when there is a large gap between the deflated airbag 207 and the cover plate 206, the airbag 207 needs to expand first until it can contact the cover plate 206 before it can effectively push the adapter plate 209 to move. Therefore, in order to solve the above technical problems, the device designs the adapter plate 209 to be convex in the middle toward the cover plate 206 through a stamping process (such as Figure 6 As shown), to compensate for the gap between the airbag 207 and the cover plate 206 in the deflated state, so that the working efficiency of the airbag 207 is significantly improved;

[0040] Third, if Figure 7As shown, the device is equipped with a pair of bearing pistons 202 for each clamping jaw 203. The design can fully utilize the limited volume of the chuck 201 and expand the sum of the effective working areas of the bearing pistons 202, so that the jack structure formed by them can output a higher thrust. Secondly, the pair of bearing pistons 202 parallel to each other determine the only degree of freedom of the clamping jaw 203, that is, the clamping jaw 203 can only move along the axis of the oil hole 201a, and cannot move in any direction other than the axis of the oil hole 201a, and cannot deflect. It should also be pointed out that the sliding part of the jaws of existing conventional chucks is usually T-shaped. Obviously, the high-precision processing difficulty of the T-shaped slider and the T-shaped slide groove is much higher than that of the oil hole 201a. The T-shaped jaw is prone to loosening in the T-shaped slide groove due to the inevitable assembly gap, which affects the clamping accuracy. The oil hole 201a of the device can obtain extremely high dimensional accuracy through conventional processing methods such as drilling, reaming or boring. Therefore, the jaws 203 of the device have high structural stability and working accuracy, and the structure is simple and the cost is controllable.

[0041] Fourthly, when the clamping jaws 203 of the device need to be reset to the zero position (closed together), the compressed air from the airbag 207 should be disconnected and the pressure should be released (for example, the airbag 207 can be directly exhausted to the air by switching the solenoid valve). The airbag 207 contracts to quickly release the pressure. At the same time, the spring 210 between the cover plate 204 and the bearing piston 202 will also push the bearing piston 202 to retract. Under the cooperation of the two, the clamping jaws 203 can quickly return to the zero position. At the same time, since the inner wall of the oil hole 201a needs to maintain a sealed sliding connection with the bearing piston 202, in order to avoid the spring 210 from scratching and damaging the inner wall of the oil hole 201a, the two ends of the spring 210 are also limited by respectively sleeved on the bearing piston 202 and the cover plate 204.

[0042] In summary, the device combines the advantages of existing pneumatic chucks and hydraulic chucks, achieving the convenience and quick action of pneumatic operation, as well as the high clamping force of hydraulic drive, while also having excellent structural stability and repeated clamping accuracy, effectively solving the problems of unchanged specifications and relatively low repeated clamping accuracy in the prior art for tensioning assemblies and chuck assemblies used in gear deburring and grinding processing.

[0043] Example 2, reference Figure 2 and Figure 3, which is the second embodiment of the present invention. Different from the previous embodiment, this embodiment provides a universal gear processing device's clamping jaw 203, which includes: one end of the clamping jaw 203 extends to the outside of the chuck 201 in a direction away from the cover plate 206, and a section of the clamping jaw 203 located outside the chuck 201 along its width direction has a vertical cross-sectional profile of an isosceles triangle, the connection between its two waistlines points to the axis of the chuck 201 and is provided with a chamfer, and the two ends of the two waistlines that are away from each other are provided with arc angles.

[0044] The clamping jaws 203 of the device are different from the clamping jaws on the ordinary chuck. Although the contact between the clamping jaws 203 of the device and the clamping jaws of the ordinary chuck and the clamped part is line contact, the clamping jaws of the ordinary chuck have only one contact line with the clamped part, while the clamping jaws 203 of the device have two contact lines with the clamped part by optimizing the shape. Taking the three-jaw chuck as an example, the clamping jaws of the ordinary chuck can only provide three support positions when being tightened, such as Figure 3 As shown by the mark B in FIG. 1 , the clamping jaw 203 of the device can provide six supporting positions, thereby providing a more reliable and stable assembly effect.

[0045] The rest of the structure is the same as that of Example 1.

[0046] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A general-purpose gear processing device, comprising a grinding power chassis (100), characterized in that: The invention also comprises a clamping mechanism (200) rotatably connected to the grinding power machine box (100), the clamping mechanism (200) comprising a chuck (201), the peripheral wall of the chuck (201) being provided with three groups of oil holes (201a) along its radial direction, and each group of the oil holes (201a) being provided with two, and the plurality of groups of the oil holes (201a) being distributed in an annular array with respect to the chuck (201), each of the oil holes (201a) being sealed and slidably sleeved with a bearing piston (202), and the middle portion of the chuck (201) being hollow and through The chuck (201) is provided with three clamping jaws (203) sleeved in the middle part thereof, the three clamping jaws (203) being distributed in a ring array about the central axis of the chuck (201), the two bearing pistons (202) in the two oil holes (201a) in a single group being vertically fixedly connected to one clamping jaw (203), an oil groove (201b) being provided between the two oil holes (201a) in the same group, and a cover plate (204) being sealed and provided at the oil holes (201a) in the single group on the outer wall of the chuck (201); The chuck (201) is located at one end of the grinding power chassis (100) and is parallel to the central axis thereof, and is provided with three oil holes (201c), the three oil holes (201c) are distributed in a ring array with respect to the chuck (201), and one oil hole (201c) is distributed between two adjacent clamping jaws (203), a piston rod (205) is sealed and slidably inserted in the oil hole (201c), and an oil channel (201d) is provided between the bottom of the oil hole (201c) and the oil groove (201b) for communication; A second cover plate (206) is coaxially arranged at one end of the chuck (201) located on the grinding power chassis (100), an adapter plate (209) is coaxially arranged on the side of the second cover plate (206) away from the chuck (201), and the middle part of the second cover plate (206) is spherically convex toward the chuck (201), an air bag (207) is sleeved at the inner concave part of the second cover plate (206), and the air bag (207) is sealed with an air joint (208), and the air joint (208) and the air bag (207) can clamp the adapter plate (209) along the axial direction of the adapter plate (209), and the piston rod (205) is fixedly connected to the adapter plate (209).

2. The universal gear processing equipment according to claim 1, characterized in that: One end of the clamping jaw (203) extends to the outside of the chuck (201) in a direction away from the second cover plate (206), and a vertical cross-sectional profile of a section of the clamping jaw (203) located outside the chuck (201) along its width direction is an isosceles triangle, the connection between its two waistlines points to the axis of the chuck (201) and is provided with a chamfer, and the two ends of the two waistlines that are away from each other are provided with arc angles.

3. The universal gear processing equipment according to claim 2, characterized in that: The diameter of the second oil hole (201c) is smaller than that of the first oil hole (201a), and the length of the piston rod (205) is greater than the depth of the second oil hole (201c).

4. The universal gear processing equipment according to claim 3, characterized in that: A clearance groove (209a) is provided on the peripheral wall of the adapter plate (209) between adjacent piston rods (205), and a short column (105) is fixedly connected to the end surface of the chuck (201) corresponding to the clearance groove (209a), the short column (105) passes through the clearance groove (209a), and a slewing support (101) is fixedly connected between the short columns (105).

5. The universal gear processing equipment according to claim 4, characterized in that: The short column (105) is connected to the inner ring of the slewing support (101), and the outer ring of the slewing support (101) is fixedly connected to the shell of the grinding power machine box (100), and the grinding power machine box (100) is provided with a driving gear (102) that matches and meshes with the inner wall of the inner ring of the slewing support (101).

6. The universal gear processing equipment according to claim 5, characterized in that: The middle portion of the adapter plate (209) is convex in a truncated cone shape in the direction of the airbag (207), and the convex portion in the middle portion of the adapter plate (209) can be matched and sleeved in the inner recess of the second cover plate (206).

7. The universal gear processing equipment according to claim 6, characterized in that: A spring (210) is provided between the cover plate one (204) and the bearing piston (202), and the diameter of the spring (210) is smaller than the oil hole one (201a), and the two ends of the spring (210) are coaxially sleeved with the cover plate one (204) and the bearing piston (202), respectively.

8. The universal gear processing equipment according to claim 7, characterized in that: The end surface of the chuck (201) located away from the second cover plate (206) is vertically connected with a positioning screw (211), and the positioning screws (211) are distributed in a ring array with respect to the chuck (201).

9. The universal gear processing equipment according to claim 8, characterized in that: The space between the oil hole 2 (201c) and the oil hole 1 (201a) is filled with hydraulic oil.

10. The universal gear processing equipment according to claim 9, characterized in that: The clamping jaw (203) is fixedly sleeved with a workpiece gear (300), the grinding power machine box (100) is further provided with a grinding output shaft (103), the grinding output shaft (103) is fixedly sleeved with a pair of grinding wheels (104), and the grinding wheels (104) are closely distributed on both sides of the workpiece gear (300).

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