A high-efficiency internal spline differential radial reciprocating grinding equipment

Abstract

The present invention relates to the field of gear processing technology, and specifically to a high-efficiency internal spline differential radial reciprocating grinding equipment, including an equipment base, a tool mounting mechanism, and a workpiece processing mechanism; the tool mounting mechanism includes a mounting seat, a tool slider, a support seat, a rotating shaft, and a processing knife; the workpiece processing mechanism includes a workpiece seat, a workpiece slider, a fixed seat, an axial workpiece drive, a radial workpiece drive, and a workpiece rotary drive; the axial workpiece drive is used to drive the workpiece seat to move left and right along the axial slide rail; the radial workpiece drive includes a moving plate, a moving slider, a moving slide rail, a side wing plate, a lead screw, a workpiece radial motor, and a connecting ear; the workpiece rotary drive is used to drive the internal spline workpiece to complete the rotation operation of a preset angle. The present invention can utilize the processing operations of axial reciprocating motion and radial feed grinding between the forming grinding tool and the internal spline of the workpiece while grinding and feeding, thereby achieving the purpose of fine finishing of the deformation of the grinding spline and improving the processing accuracy of the internal spline.

Description

Technical Field

[0001] The invention relates to the technical field of gear processing, and in particular to a high-efficiency internal spline differential radial reciprocating grinding device. Background Art

[0002] Due to the rapid development of electric vehicles, the amount of motor shafts used in drive motors has increased year by year. The connection of the motor-driven gearbox is mostly spline connection, which requires high precision. Therefore, the precision control requirements for internal spline products are also very strict. Internal spline products, especially blind hole internal spline products, are prone to deformation after heat treatment, and the size is out of tolerance. The gap between precision and application requirements is large. The problem of not meeting the use requirements of motor-driven spline connections has always plagued the industry. Due to the particularity of spline workpieces and limited space, traditional finishing methods cannot be applied, and the need for precision improvement applications cannot be met. The inner hole grinding process of gear processing is close to the internal spline processing process in the prior art. The principle is that the tool performs axial reciprocating motion while rotating, but this grinding method can only grind the inner hole, and cannot grind the tooth surface of spline products. Another similar process is to use a formed pusher to perform fine finishing of spline internal deformation, but the pusher tool is easy to fall off, and the workpiece precision cannot be guaranteed. Further analysis shows that gear products with internal splines also have the problem of deformation of the internal splines after heat treatment. If the conditions for through-hole internal splines allow, the method of hard drawing after heat treatment can be used, but there are problems with high tool costs, large equipment investment, low cost-effectiveness, and it is impossible to process blind hole internal spline products. Summary of the invention

[0003] In order to solve the above-mentioned shortcomings and deficiencies of the existing internal spline heat treatment deformation processing, the present invention provides a high-efficiency internal spline differential radial reciprocating grinding equipment that utilizes axial reciprocating motion and radial feed grinding between the forming grinding tool and the internal spline of the workpiece while grinding feed, so as to achieve the purpose of fine finishing of the grinding spline deformation and improve the internal spline processing accuracy.

[0004] The present invention adopts the following technical solutions to achieve the above purpose:

[0005] A high-efficiency internal spline differential radial reciprocating grinding equipment, comprising an equipment base, a tool mounting mechanism, and a workpiece processing mechanism; the equipment base is distributed on the left and right; the tool mounting mechanism comprises a mounting seat, a support seat, a rotating shaft and a processing knife; the mounting seat is arranged on the equipment base; an axial driving member is also provided on one side of the mounting seat to complete the axial reciprocating motion of the mounting seat with a preset stroke; the support seat is fixedly installed on the mounting seat; the rotating shaft extends left and right through the support seat, and an axially distributed infusion channel is also provided in the center of the rotating shaft, and a coolant pipe is connected to the left end; a tool rotating structure is also connected to the left side of the rotating shaft, so that the processing knife can rotate at a preset angle; the processing knife comprises a tool handle and a tool body; the tool handle and the right side of the rotating shaft are connected The ends remain connected; the tool body is arranged on the tool handle, and the outer side wall is provided with tool teeth adapted for spline processing; a fluid channel is also provided at the center of the tool handle and the tool body; the tool body is provided with flushing holes which are evenly distributed in an annular shape and communicated with the fluid channel; the workpiece processing mechanism includes a workpiece seat, a fixed seat, an axial workpiece drive, a radial workpiece drive and a workpiece rotation drive; the workpiece seat is arranged on the equipment base in a front-to-back distribution; the axial workpiece drive is used to drive the workpiece seat to move left and right along the equipment base; the fixed seat is arranged above the workpiece seat, and the radial workpiece drive is used to complete the fastening of the internal spline workpiece while performing the radial movement operation forward and backward; the workpiece rotation drive is used to drive the internal spline workpiece to complete the rotation operation of a preset angle.

[0006] As a preferred technical solution: the axial driving member includes an axial driving motor, a reducer, a driving shaft, a driving wheel, a first fixed shaft and a second fixed shaft and a connecting rod; a vertically distributed mounting groove is provided on the left side of the equipment base, the axial driving motor is fixedly installed on the side wall of the mounting groove through a bracket, the output end of the axial driving motor is connected to the reducer, and the reducer is also installed in the mounting groove through a bracket; the driving shaft is vertically distributed, and one end is connected to the reducer and the other end is connected to the driving wheel; the first fixed shaft is arranged on the upper end surface of the driving wheel and maintains a preset distance from the center of the driving wheel; the second fixed shaft is vertically distributed on the mounting seat, and the connecting rod is rotationally connected to the first fixed shaft and the second fixed shaft respectively; the connecting rod remains horizontally distributed; and an axial slide rail is also provided on the equipment base, and a tool slider is provided on the bottom end surface of the mounting seat, and is matched and installed with the axial slide rail.

[0007] A further preferred technical solution is as follows: the number of the two axial slide rails is symmetrically distributed front to back; and each of the axial slide rails is provided with two tool slide blocks spaced apart left to right.

[0008] A further preferred technical solution: the tool rotation structure includes a tool motor, a main gear, a sub-gear and a toothed belt; the tool motor is fixedly mounted on the upper end surface of the support seat through a bracket; the main gear is sleeved and mounted on the output shaft of the tool motor, the sub-gear is fixedly mounted on the rotating shaft, and the toothed belt is arranged between the main gear and the sub-gear.

[0009] A further preferred technical solution: a joint assembly is also connected between the rotating shaft and the coolant pipe, and the joint assembly includes a connecting column, a first connecting pipe and a second connecting pipe; the connecting columns are distributed on the left and right, and an axially distributed connecting channel is provided inside; the input end of the first connecting pipe is connected and fixed to the coolant pipe through a pipe valve joint, and the output end is kept fixed to the connecting column, and the second connecting pipe includes a ring platform and a tube body, which are integrally formed, and the outer diameter of the ring platform is larger than the outer diameter of the tube body and smaller than the outer diameter of the connecting column; an annular groove is provided inside the right side of the connecting column, and the annular groove can be rotatably adapted to be installed in the annular groove, and one end of the tube body is fixedly connected to the rotating shaft through a pipe valve joint; an oil seal is also provided between the tube body and the side wall of the annular groove.

[0010] A further preferred technical solution: a tool chuck is also provided on the right side of the support seat to complete the clamping and fixing operation of the tool body; the right end of the rotating shaft passes through the tool chuck, and the two are kept fixedly connected; a connecting groove is provided on the right side of the rotating shaft; the tool handle is adapted to be installed in the connecting groove, and a sealing rubber ring is also provided at the connection between the two; the diameter of the fluid channel is equal to the diameter of the infusion channel; and a spirally distributed chip removal groove is also provided on the tool body.

[0011] A further preferred technical solution: the axial workpiece drive includes a workpiece slider, an axial workpiece motor, a fixed block, an auxiliary plate and a rotating screw; the workpiece slider is arranged on the workpiece seat and is adapted to be installed on the axial slide rail; the workpiece slider has the same distribution structure as the tool slider; the axial workpiece motor is fixedly installed on the right end of the equipment base through a bracket; the fixed block is arranged on the right side of the equipment base, and the auxiliary plate is arranged on the upper end surface of the equipment base and is located on the left side of the workpiece seat; one end of the rotating screw is connected to the axial workpiece motor, and the other end passes through the fixed block and is connected to the auxiliary plate, and the rotating screw is connected to the fixed block and the auxiliary plate through bearings; a protrusion is provided at the bottom end of the workpiece seat, the protrusion is integrally formed with the workpiece seat, and a threaded connection is maintained between the rotating screw and the protrusion.

[0012] A further preferred technical solution: the radial workpiece drive includes a movable plate, a movable slider, a movable slide rail, a side wing plate, a lead screw, a workpiece radial motor and a connecting ear; the movable slide rail is extended forward and backward and is arranged on the workpiece seat; the movable plate is horizontally distributed, and the movable slide rail is fixedly installed on the lower end surface of the movable plate and is installed in matching with the movable slider; the fixed seat is installed on the movable plate, and a workpiece chuck is provided on one side to complete the fastening operation of the internal spline workpiece; the side wing plates are two distributed front and back, and are both arranged on the workpiece seat; the workpiece radial motor is arranged on the rear side of the workpiece seat through a bracket, and the lead screw extends forward through the side wing plate on the rear side and is connected to the side wing plate on the front side; the connecting ear is arranged on the lower end surface of the movable plate; the lead screw passes through the connecting ear, and the two are threadedly connected.

[0013] A further preferred technical solution: the workpiece rotation drive includes a transmission shaft, a driving wheel, a driven wheel and a workpiece rotation motor; the workpiece rotation motor is fixedly mounted on the movable plate through a bracket; the driving wheel is sleeved and mounted on the output shaft of the workpiece rotation motor, one end of the transmission shaft is connected to the workpiece chuck, and the other end passes through the fixed seat and extends to the right; the driven wheel is sleeved and mounted on the transmission shaft, and the driving wheel and the driven wheel maintain meshing transmission.

[0014] A further preferred technical solution: the equipment base is also provided with a recovery structure, which includes a recovery chamber, a recovery pipe, a liquid pump and a drainage pipe; the recovery chamber is arranged inside the equipment base and is located below the processing knife; a groove is also provided on the upper end surface of the equipment base corresponding to the recovery chamber, and a vertically distributed recovery pipe is provided in the center of the groove, and the lower end of the recovery pipe leads to the recovery chamber; a filter net is also provided in the center of the groove and above the connecting pipe; filter cotton is provided at the bottom of the recovery chamber; the drainage pipe is obliquely distributed on the equipment base, and the input end leads to the recovery chamber; the liquid pump is provided on the drainage pipe.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention has developed a hollow forming processing tool made of superhard material, which performs fine processing and repair of the internal spline tooth surface in a mode of axial reciprocating motion and radial feed grinding of the tool. This grinding method has a simple grinding amount setting and adopts the principle of radial feed differential forming grinding by reciprocating motion grinding of the processing tool in the shape of the external spline. The grinding amount, feed speed and the size of the tooth surface of the internal spline workpiece to be achieved can be accurately adjusted under private service drive; at the same time, after the forming tool enters the spline, since the number of teeth of the processing tool is one tooth less than the number of teeth of the internal spline of the workpiece, the two tooth surfaces of the tool and the tooth surface of the workpiece are ground under non-repetitive contact surfaces, thereby avoiding the inconsistency caused by the excessive precision of individual teeth and improving the internal spline deformation finishing treatment. The machining efficiency and machining accuracy of the internal spline are improved; during grinding, the workpiece rotates while revolving around the center of the machining cutter, and the centers of the two coincide, which ensures the concentricity of the internal spline during grinding, and the workpiece diameter runout is effectively guaranteed with high concentricity; during grinding, the machining cutter spindle (rotating shaft) and the workpiece spindle (transmission shaft) rotate synchronously in the same direction, and the speed is related to the number of teeth of the tool and the number of teeth of the internal spline of the workpiece, and the axial reciprocating motion of the tool is performed synchronously for grinding; the grinding amount feed can be precisely adjusted, which well guarantees the dimensional requirements of the spline span, and the accuracy can reach within 5 levels, which fully meets the use requirements of the product; a relatively high spline accuracy can be obtained, which well solves the problem that the traditional finishing of the internal spline cannot meet the application requirements, and the accuracy after processing fully meets the dimensional requirements of the application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 paying creative labor.

[0017] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0018] Figure 2 It is a top view of the overall structure of the present invention;

[0019] Figure 3 It is a front view of the overall structure of the present invention;

[0020] Figure 4 It is an enlarged structural diagram of the axial driving member of the present invention;

[0021] Figure 5 A perspective view of the axial workpiece drive of the present invention;

[0022] Figure 6 A perspective view of a radial workpiece drive of the present invention;

[0023] Figure 7 A side view of a partial structure of a radial workpiece drive of the present invention;

[0024] Figure 8 It is a structural schematic diagram of the workpiece rotation drive of the present invention;

[0025] Fig. 9 It is a structural stereogram of the processing knife of the present invention;

[0026] Fig.10 is a cross-sectional view of a processing knife of the present invention;

[0027] Fig.11 is a schematic diagram of a recycling structure of the present invention;

[0028] Fig.12 It is a schematic diagram of the connection structure of the joint assembly of the present invention.

[0029] In the figure: 1. Equipment base; 11. Axial slide rail; 12. Mounting groove; 2. Tool mounting mechanism; 21. Mounting seat; 22. Tool slider; 23. Support seat; 24. Rotating shaft; 241. Connecting groove; 242. Sealing rubber ring; 25. Processing knife; 251. Knife handle; 252. Knife body; 253. Knife teeth; 254. Fluid channel; 255. Flushing hole; 256. Chip removal groove; 26. Infusion channel; 27. Coolant pipe ; 28, joint assembly; 281, connecting column; 282, first connecting pipe; 283, second connecting pipe; 284, connecting channel; 285, ring stage; 286, tube body; 287, ring groove; 288, oil seal; 29, tool chuck; 3, workpiece processing mechanism; 31, workpiece seat; 32, workpiece slide; 33, fixed seat; 34, axial workpiece drive; 341, axial workpiece motor; 342, fixed block; 343, auxiliary plate; 344, rotating screw; 345, protrusion; 35, radial workpiece drive; 351, moving plate; 352, moving slider; 353, moving slide rail; 354, side wing plate; 355, screw; 356, workpiece radial motor; 357, connecting ear; 36, workpiece rotation drive; 361, transmission shaft; 362, driving wheel; 363, driven wheel; 364, workpiece rotation motor; 37, workpiece chuck; 4, axial drive member ; 41. Axial drive motor; 42. Reducer; 43. Drive shaft; 44. Drive wheel; 45. First fixed shaft; 46. Second fixed shaft; 47. Connecting rod; 5. Tool rotation structure; 51. Tool motor; 52. Main gear; 53. Sub gear; 54. Toothed belt; 6. Recovery structure; 61. Recovery chamber; 62. Recovery pipe; 63. Liquid pump; 64. Drain pipe; 65. Groove; 66. Filter net; 67. Filter cotton. DETAILED DESCRIPTION

[0030] 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.

[0031] It should be noted that, in the specific implementation of the present invention, the possible terms such as "first" and "second" and other relational terms are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the possible terms such as "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of further restrictions, the possible statements "including one" and other defined elements do not exclude the existence of other identical elements in the process, method, article or equipment including the elements.

[0032] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "provided with" that may appear should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0033] Example 1: Figures 1 to 12 As shown:

[0034] A high-efficiency internal spline differential radial reciprocating grinding equipment, including an equipment base 1, a tool mounting mechanism 2, and a workpiece processing mechanism 3. The invention has developed a hollow forming processing tool made of superhard material, which performs fine processing on the internal spline tooth surface by axial reciprocating motion and tool radial feed grinding. This grinding method is simple to set the grinding amount. It uses the principle of radial feed differential forming grinding by reciprocating motion grinding of the processing tool in the shape of an external spline to obtain a relatively high spline accuracy, which solves the problem that traditional fine processing of internal splines cannot meet application requirements. The accuracy after processing fully meets the dimensional requirements of the application. The equipment base 1 is distributed on the left and right to form a stable support. In addition, an axial slide rail 11 extending left and right is provided on the equipment base 1; the axial slide rail 11 is fixedly mounted on the equipment base 1 by screws. Figure 1 As shown: the two axial slide rails 11 are symmetrically distributed front and back; each of the axial slide rails 11 is equipped with two tool slide blocks 22 spaced apart from each other; the workpiece slide block 32 has the same distribution structure as the tool slide block 22; such an arrangement ensures the stability of the sliding. The power required by the present invention is driven by connecting an external power supply.

[0035] like Figure 1 As shown: In this embodiment, the tool mounting mechanism 2 includes a mounting seat 21, a tool slider 22, a support seat 23, a rotating shaft 24 and a processing tool 25. The mounting seat 21 is horizontally distributed and is arranged on the left side of the equipment base 1. The tool slider 22 is fixedly mounted on the bottom end surface of the mounting seat 21 and is matched with the axial slide rail 11; wherein the tool slider 22 and the mounting seat 21 can be fixed by welding. An axial driving member 4 is also provided on one side of the mounting seat 21 to complete the axial reciprocating motion of the preset stroke of the mounting seat 21. A preferred technical solution: as Figure 4 As shown: the axial drive member 4 includes an axial drive motor 41, a reducer 42, a drive shaft 43, a drive wheel 44, a first fixed shaft 45, a second fixed shaft 46 and a connecting rod 47. A vertically distributed mounting groove 12 is provided on the left side of the equipment base 1. The axial drive motor 41 is fixedly installed on the side wall of the mounting groove 12 through a bracket. The axial drive motor 41 adopts a servo control motor. The output end of the axial drive motor 41 is connected to the reducer 42, and the reducer 42 is also installed on the mounting groove 12 through a bracket; the purpose of such a setting is to make the space design more reasonable and the utilization rate higher. The drive shaft 43 is vertically distributed, and one end is connected to the reducer 42 and the other end is connected to the drive wheel 44. The first fixed shaft 45 is arranged on the upper end surface of the drive wheel 44, and maintains a preset distance from the center of the drive wheel 44, which can be set according to the stroke requirement of the reciprocating processing operation of the processing knife. The first fixed shaft 45 can be connected to the drive wheel 44 by welding. The second fixed shaft 46 is vertically distributed on the mounting seat 21, and the connecting rod 47 is rotatably connected to the first fixed shaft 45 and the second fixed shaft 46 respectively; the connecting rod 47 is horizontally distributed. With such a configuration, the axial drive motor 41 is started, and after the deceleration effect of the reducer 42, the drive shaft 43 is driven to rotate synchronously at a predetermined speed. This will then drive the drive wheel 44 and the first fixed shaft 45 to rotate, and with the cooperation of the rotational connection at both ends of the connecting rod 47, the second fixed shaft 46 and the mounting seat 21 are driven to reciprocate left and right as a whole, thereby providing a strong foundation for the subsequent axial reciprocating grinding operation of the processing knife.

[0036] like Figure 1 and Figure 3As shown: In this embodiment, the support seat 23 is vertically distributed and fixedly installed on the mounting seat 21. The rotating shaft 24 extends left and right to pass through the supporting seat 23. The center of the rotating shaft 24 is provided with an axially distributed infusion channel 26, and the left end is connected to a coolant pipe 27. The purpose of such a setting is to complete the delivery of coolant while ensuring that the rotating shaft 24 has sufficient strength, and the structural design is more reasonable. Among them, the left side of the rotating shaft 24 is also connected to a tool rotation structure 5, so that the processing knife 25 can rotate a preset angle. In a preferred technical solution, as Figure 1 As shown: the tool rotation structure 5 includes a tool motor 51, a main gear 52, a sub-gear 53 and a toothed belt 54. The tool motor 51 is fixedly mounted on the upper end surface of the support seat 23 through a bracket. The main gear 52 is sleeved and mounted on the output shaft of the tool motor 51, the sub-gear 53 is fixedly mounted on the rotating shaft 24, and the toothed belt 54 is arranged between the main gear 52 and the sub-gear 53. In this way, the tool motor 51 adopts a servo control motor. When the tool motor 51 is started, the main gear 52, the sub-gear 53 and the toothed belt 54 cooperate to complete the rotation of the rotating shaft 24 and the connected processing tool 25.

[0037] like Fig. 9 and Fig.10Structure shown: In this embodiment, the processing knife 25 includes a handle 251 and a knife body 252. The handle 251 is distributed on the left and right and is connected to the right end of the rotating shaft 24; the knife body 252 is arranged on the handle 251, and the outer wall is provided with a knife tooth 253 adapted for spline processing. The diameter of the handle 251 is smaller than the diameter of the knife body 252, and the two are an integrally formed structure, and a fluid channel 254 is also provided at the center of the two; it is used to transport coolant. The purpose of the coolant is to ensure the normal and safe use of the knife body and avoid the temperature rise of the tool caused by continuous processing. The second is to be used for flushing the grinding particles. The knife body 252 is provided with flushing holes 255 that are evenly distributed in an annular shape and communicated with the fluid channel 254. The knife body 252 is also provided with a spirally distributed chip removal groove 256; it is used to complete the chip removal operation of the grinding particles under the flushing of the coolant. A tool chuck 29 is also provided on the right side of the support seat 23 to complete the clamping and fixing operation of the knife body 252. The tool chuck 29 adopts a three-claw chuck structure, which is a prior art, so it is not repeated here. The right end of the rotating shaft 24 passes through the tool chuck 29, and the two are fixedly connected. At the same time, it is also ensured that the handle 251 is connected and fixed to the rotating shaft 24, and the handle 251 has sufficient length to complete the fastening operation of the tool chuck. Among them, the cutter body 252 is a hollow-molded external spline shape, and the number of teeth of the cutter teeth 253 is one or more less than the number of teeth of the internal spline workpiece; this is also a differential processing mode of the difference in the number of teeth. At the same time, the tooth surface of the cutter teeth 253 is coated with superhard material particles as a grinding surface, and the handle 251 is installed on the hollow main shaft (rotating shaft) of the rotatable tool, and coolant can be transported inside to cool the heat of the grinding workpiece and take away the grinding particles. The processing knife 25 is made of superhard material, and CBN material is conventionally recommended. Preferably, this embodiment can not only complete the finishing processing of the internal spline of the straight tooth type, but also use the helical tooth type tool to complete the processing of the internal spline of the helical tooth type.

[0038] like Fig.12Structure shown: In this embodiment, a joint assembly 28 is also connected between the rotating shaft 24 and the coolant pipe 27. A connecting groove 241 is provided on the right side of the rotating shaft 24; the knife handle 251 is adapted to be installed in the connecting groove 241, and a sealing rubber ring 242 is also provided at the connection between the two. The diameter of the fluid channel 254 is equal to the diameter of the infusion channel 26. When the knife handle 251 is installed, the knife handle 251 is inserted into the connecting groove 241, the sealing rubber ring is squeezed, and then the staff starts the tool chuck 29 to complete the clamping and fixing operation of the knife handle. The purpose of such a setting is to ensure the stability of the coolant delivery on the basis of ensuring the connection and sealing between the two. The joint assembly 28 includes a connecting column 281, a first connecting pipe 282 and a second connecting pipe 283. The connecting column 281 is distributed left and right, and an axially distributed connecting channel 284 is provided inside. The input end of the first connecting pipe 282 is connected and fixed to the coolant pipe 27 through a pipe valve joint, and the output end is fixed to the connecting column 281. The first connecting pipe 282 and the connecting column 281 can be fixed by welding. The second connecting pipe 283 includes a ring platform 285 and a tube body 286, which are integrally formed. The outer diameter of the ring platform 285 is larger than the outer diameter of the tube body 286, and smaller than the outer diameter of the connecting column 281. An annular groove 287 is provided inside the right side of the connecting column 281. The annular platform 285 is rotatably adapted to be installed in the annular groove 287. One end of the tube body 286 is fixedly connected to the rotating shaft 24 through a pipe valve joint; an oil seal 288 is also provided between the tube body 286 and the side wall of the annular groove 287. The purpose of such a setting is to make the structural design more reasonable. On the basis of ensuring that the rotating shaft 24 drives the processing knife 25 to rotate, it can also realize the connection of the coolant pipe 27 to complete the conveying operation of the coolant to the processing knife fluid channel 254.

[0039] like Figure 1 and 2 As shown: In this embodiment, the workpiece processing mechanism 3 includes a workpiece seat 31, a workpiece slider 32, a fixed seat 33, an axial workpiece drive 34, a radial workpiece drive 35 and a workpiece rotation drive 36. The workpiece seat 31 is distributed front and back and is arranged on the right side of the equipment base 1. The workpiece slider 32 is arranged on the workpiece seat 31 and is adapted to be installed on the axial slide rail 11; the workpiece slider 32 can be connected to the workpiece seat 31 by welding. The axial workpiece drive 34 is used to drive the workpiece seat 31 to move left and right along the axial slide rail 11. The fixed seat 33 is arranged above the workpiece seat 31. A preferred technical solution is as follows: Figure 6As shown: the radial workpiece drive 35 includes a moving plate 351, a moving slider 352, a moving slide rail 353, a side wing plate 354, a lead screw 355, a workpiece radial motor 356 and a connecting ear 357. The moving slide rail 353 is arranged on the workpiece seat 31 in a forward and backward extending manner; the moving slide rail 353 is two and distributed on the left and right, and both are connected and fixed by screws. The moving plate 351 is horizontally distributed, and the moving slider 352 is fixedly installed on the lower end surface of the moving plate 351, and is matched with the moving slider 352 and installed; it plays a good guiding role. The fixed seat 33 is installed on the moving plate 351, and a workpiece chuck 37 is provided on one side to complete the tightening operation of the internal spline workpiece. The workpiece chuck also adopts a three-jaw chuck structure. The three-jaw chuck is a prior art, so it is not described in detail.

[0040] like Figure 7 As shown: wherein, the side wing plates 354 are two and are distributed front and back, and are both arranged on the workpiece seat 31. The workpiece radial motor 356 is arranged on the rear side of the workpiece seat 31 through a bracket, and the workpiece radial motor 356 also adopts a servo control motor. The lead screw 355 passes through the side wing plate 354 on the rear side and extends forward and is connected to the side wing plate 354 on the front side; the lead screw 355 and the side wing plate 354 are connected by bearings. The connecting ear 357 is arranged on the lower end surface of the moving plate 351, and the two can be fixed by welding. The lead screw 355 passes through the connecting ear 357, and the two are threadedly connected; in this way, the two can form a lead screw nut structure, and the forward and reverse movement of the workpiece radial motor 356 will drive the lead screw 355 to move synchronously, and under the auxiliary guiding action of the moving slider 352 and the moving slide rail 353, it will drive the connecting ear 357 and the moving plate 351 to move forward and backward. The workpiece rotary drive 36 is used to drive the internal spline workpiece to complete the rotation operation of the preset angle.

[0041] Working principle: First, install the internal spline workpiece on the workpiece chuck 37 and complete the pre-clamping operation. Next, start the axial workpiece motor 341. The start of the axial workpiece motor 341 will drive the rotating screw 344 to rotate synchronously. Taking the forward rotation of the axial workpiece motor 341 as an example, the forward rotation of the axial workpiece motor 341 will drive the rotating screw 344 to rotate clockwise, and then under the auxiliary guiding cooperation of the workpiece slide block 32 and the axial slide rail 11, the rotating screw 344 will drive the fixed block 342 and the workpiece seat 31 to move left as a whole. That is, approach the direction of the processing knife 25, let the processing knife 25 enter the workpiece spline, and adjust the feeding position of the processing knife. Before clamping the internal spline workpiece, the tool radial feed will make the two sides of the workpiece internal spline close to the two sides of the tooth surface of the processing knife teeth 253, and then the workpiece chuck 37 will perform the final clamping operation. Next, the processing knife 25 starts to perform axial reciprocating motion according to the adjusted reciprocating position, and the axial drive motor drives the tool slide through the connecting rod. Specifically, the axial drive motor 41 is started, and after the deceleration effect of the reducer 42, the drive shaft 43 is driven to rotate synchronously, which in turn drives the drive wheel 44 and the first fixed shaft 45 to rotate, and under the cooperation of the rotation connection at both ends of the connecting rod 47, the second fixed shaft 46 and the mounting seat 21 are driven to reciprocate left and right as a whole.

[0042] Then, while the machining cutter 25 reciprocates left and right, the cutter rotation servo drive device (cutter rotation structure 5) and the workpiece servo drive device (workpiece rotation drive 36) rotate synchronously and in the same direction at the same time. The speed of the synchronous rotation of the two is related to the number of cutter teeth and the number of teeth of the internal spline of the workpiece, and can be set according to specific needs. At the same time, the forward and reverse movement of the workpiece radial motor 356 will drive the lead screw 355 to move synchronously, and under the auxiliary guiding action of the moving slider 352 and the moving slide rail 353, it will further drive the connecting ear 357 and the moving plate 351 to move forward and backward, that is, the workpiece radial motor 356 can adjust the forward and backward movement of the moving plate, and then complete the movement of the internal spline workpiece in the forward and backward direction, and finally realize the finishing treatment of the deformation of the internal spline by the cutter teeth 253 of the machining cutter. When the cutter teeth of the machining cutter 25 are grinding the internal spline, coolant is simultaneously fed in to start tooth surface grinding. The coolant flows from the coolant pipe 27 through the infusion channel 26-fluid channel 254, and then passes through the flushing hole 255 to complete the cooling operation of the tool and the flushing operation of the grinding particles. After waiting for the internal spline workpiece to reach the set grinding position, the radial workpiece drive 35 and the axial workpiece drive 34 exit at the same time to complete a grinding process. This grinding method can achieve relatively high spline accuracy due to its simple grinding amount setting, high repeatability and high concentricity. Preferably, the axial workpiece drive 34 can also be used to drive the internal spline workpiece to feed in the direction close to the tooth surface of the cutter tooth.

[0043] Example 2: Figure 1 and Figure 5As shown: On the basis of Example 1, a high-efficiency internal spline differential radial reciprocating grinding equipment also includes: the axial workpiece drive 34 includes an axial workpiece motor 341, a fixed block 342, an auxiliary plate 343 and a rotating screw 344. Specifically as shown in 5, the axial workpiece motor 341 is fixedly installed on the right end of the equipment base 1 through a bracket; the axial workpiece motor 341 also adopts a servo control motor. The fixed block 342 is arranged on the right side of the equipment base 1, and the two can be fixed by welding. The auxiliary plate 343 is arranged on the upper end surface of the equipment base 1 and is located on the left side of the workpiece seat 31. One end of the rotating screw 344 is connected to the axial workpiece motor 341, and the other end passes through the fixed block 342 and is connected to the auxiliary plate 343, and the rotating screw 344 is connected to the fixed block 342 and the auxiliary plate 343 through bearings. The bottom end of the workpiece seat 31 is provided with a protrusion 345, which is integrally formed with the workpiece seat 31, and the rotating screw 344 is threadedly connected with the protrusion 345 to form a screw nut structure. With such a configuration, the axial workpiece motor 341 will drive the rotating screw to rotate synchronously when it is started. Taking the forward rotation of the axial workpiece motor 341 as an example, the forward rotation of the axial workpiece motor 341 will drive the rotating screw 344 to rotate clockwise, and then under the auxiliary guiding cooperation of the workpiece slider 32 and the axial slide rail 11, the rotating screw 344 will drive the fixed block 342 and the workpiece seat 31 to move to the left as a whole, that is, to move closer to the processing knife 25.

[0044] Example 3: Figure 1 and Figure 8 As shown: Based on Example 2, a high-efficiency internal spline differential radial reciprocating grinding equipment also includes: the workpiece rotary drive 36 includes a transmission shaft 361, a driving wheel 362, a driven wheel 363 and a workpiece rotary motor 364. The workpiece rotary motor 364 is fixedly mounted on the movable plate 351 through a bracket. The driving wheel 362 is sleeved and mounted on the output shaft of the workpiece rotary motor 364, one end of the transmission shaft 361 is connected to the workpiece chuck 37, and the other end passes through the fixed seat 33 and extends to the right; the driven wheel 363 is sleeved and mounted on the transmission shaft 361, and the driving wheel 362 and the driven wheel 363 maintain meshing transmission. In this way, the workpiece rotary motor 364 adopts a servo control motor. When the workpiece rotary motor 364 is started, it will drive the meshing rotation of the driving wheel 362 and the driven wheel 363, and then drive the rotation operation of the transmission shaft 361 and the workpiece chuck 37 as a whole, that is, drive the rotary motion of the internal spline workpiece.

[0045] Example 4: Figure 1 and Fig.11As shown: Based on Example 3, a high-efficiency internal spline differential radial reciprocating grinding device also includes: the device base 1 is also provided with a recovery structure 6, and the recovery structure 6 includes a recovery chamber 61, a recovery pipe 62, a liquid pump 63 and a drain pipe 64. Fig.11 The structure shown is as follows: the recovery chamber 61 is arranged inside the equipment base 1 and is located below the processing knife 25. A groove 65 is also arranged on the upper end surface of the equipment base 1 corresponding to the recovery chamber 61, and the groove is preferably a conical concave structure. The center of the groove 65 is provided with the vertically distributed recovery pipe 62, and the lower end of the recovery pipe 62 leads to the recovery chamber 61. A filter screen 66 is also arranged at the center of the groove 65 and above the connecting pipe; such arrangement is used to filter larger particles of grinding particle impurities. The filter screen is movably connected to facilitate the disassembly and dumping of impurities. A filter cotton 67 is arranged at the bottom of the recovery chamber 61; the purpose of such arrangement is to further filter the coolant that has taken away the grinding particles after cooling the processing knife and flushing the internal spline, so as to facilitate subsequent recycling and reuse. The drain pipe 64 is arranged obliquely on the equipment base 1, and the input end leads to the recovery chamber 61. The liquid pump 63 is arranged on the drain pipe 64. With such arrangement, when the liquid pump 63 is started, it will drive and attract the coolant entering the recovery chamber, and then with the assistance of the filter screen 66 and the filter cotton 67, the cooling liquid will be filtered and recovered.

[0046] 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-efficiency internal spline differential radial reciprocating grinding equipment, characterized in that: It includes an equipment base, a tool mounting mechanism, and a workpiece processing mechanism; the equipment base is distributed on the left and right; the tool mounting mechanism includes a mounting seat, a support seat, a rotating shaft and a processing knife; the mounting seat is arranged on the equipment base; an axial driving member is also provided on one side of the mounting seat to complete the axial reciprocating motion of the preset stroke of the mounting seat; the support seat is fixedly installed on the mounting seat; the rotating shaft extends left and right through the support seat, and an axially distributed infusion channel is also provided in the center of the rotating shaft, and a coolant pipe is connected to the left end; a tool rotating structure is also connected to the left side of the rotating shaft, so that the processing knife can rotate to a preset angle; the processing knife includes a tool handle and a tool body; the tool handle is connected to the right end of the rotating shaft; the tool body is arranged on the tool handle, and an adaptor is provided on the outer wall The tool is provided with flushing holes which are evenly distributed in an annular pattern and communicate with the fluid channel; the workpiece processing mechanism comprises a workpiece seat, a fixed seat, an axial workpiece drive, a radial workpiece drive and a workpiece rotary drive; the workpiece seat is arranged on the equipment base in a front-to-back distribution; the axial workpiece drive is used to drive the workpiece seat to move left and right along the equipment base; the fixed seat is arranged above the workpiece seat, and the radial workpiece drive is used to complete the fastening of the internal spline workpiece while performing the radial movement operation forward and backward, and to perform the fine processing of the internal spline tooth surface in the mode of axial reciprocating motion and radial feed grinding of the tool; the workpiece rotary drive is used to drive the internal spline workpiece to complete the rotation operation of the preset angle.

2. A high-efficiency internal spline differential radial reciprocating grinding device as claimed in claim 1, characterized in that: The axial driving member includes an axial driving motor, a reducer, a driving shaft, a driving wheel, a first fixed shaft, a second fixed shaft and a connecting rod; a vertically distributed mounting groove is provided on the left side of the equipment base, the axial driving motor is fixedly installed on the side wall of the mounting groove through a bracket, the output end of the axial driving motor is connected to the reducer, and the reducer is also installed in the mounting groove through a bracket; the driving shaft is vertically distributed, and one end is connected to the reducer and the other end is connected to the driving wheel; the first fixed shaft is arranged on the upper end surface of the driving wheel and maintains a preset distance from the center of the driving wheel; the second fixed shaft is vertically distributed on the mounting seat, and the connecting rod is rotationally connected with the first fixed shaft and the second fixed shaft respectively; the connecting rod remains horizontally distributed; and an axial slide rail is also provided on the equipment base, and a tool slider is provided on the bottom end surface of the mounting seat, and is matched and installed with the axial slide rail.

3. A high-efficiency internal spline differential radial reciprocating grinding device as claimed in claim 2, characterized in that: There are two axial slide rails distributed symmetrically in front and back; each of the axial slide rails is equipped with two tool slide blocks distributed at intervals in the left and right.

4. A high-efficiency internal spline differential radial reciprocating grinding device as claimed in claim 3, characterized in that: The tool rotation structure includes a tool motor, a main gear, a sub-gear and a toothed belt; the tool motor is fixedly mounted on the upper end surface of the support seat through a bracket; the main gear is sleeved and mounted on the output shaft of the tool motor, the sub-gear is fixedly mounted on the rotating shaft, and the toothed belt is arranged between the main gear and the sub-gear.

5. A high-efficiency internal spline differential radial reciprocating grinding device as claimed in claim 4, characterized in that: A joint assembly is also connected between the rotating shaft and the coolant pipe, and the joint assembly includes a connecting column, a first connecting pipe and a second connecting pipe; the connecting columns are distributed on the left and right, and an axially distributed connecting channel is provided inside; the input end of the first connecting pipe is connected and fixed to the coolant pipe through a pipe valve joint, and the output end is kept fixed to the connecting column, and the second connecting pipe includes a ring platform and a tube body, which are integrally formed, and the outer diameter of the ring platform is larger than the outer diameter of the tube body and smaller than the outer diameter of the connecting column; an annular groove is provided inside the right side of the connecting column, and the annular groove can be rotatably adapted to be installed in the annular groove, and one end of the tube body is fixedly connected to the rotating shaft through a pipe valve joint; an oil seal is also provided between the tube body and the side wall of the annular groove.

6. A high-efficiency internal spline differential radial reciprocating grinding device as claimed in claim 5, characterized in that: A tool chuck is also provided on the right side of the support seat to complete the clamping and fixing operation of the tool body; the right end of the rotating shaft passes through the tool chuck, and the two are kept fixedly connected; a connecting groove is provided on the right side of the rotating shaft; the tool handle is adapted to be installed in the connecting groove, and a sealing rubber ring is also provided at the connection between the two; the diameter of the fluid channel is equal to the diameter of the infusion channel; and a spirally distributed chip removal groove is also provided on the tool body.

7. A high-efficiency internal spline differential radial reciprocating grinding device as claimed in claim 6, characterized in that: The axial workpiece drive includes a workpiece slider, an axial workpiece motor, a fixed block, an auxiliary plate and a rotating screw; the workpiece slider is arranged on the workpiece seat and is adapted to be installed on the axial slide rail; the workpiece slider has the same distribution structure as the tool slider; the axial workpiece motor is fixedly installed on the right end of the equipment base through a bracket; the fixed block is arranged on the right side of the equipment base, and the auxiliary plate is arranged on the upper end surface of the equipment base and is located on the left side of the workpiece seat; one end of the rotating screw is connected to the axial workpiece motor, and the other end passes through the fixed block and is connected to the auxiliary plate, and the rotating screw is connected to the fixed block and the auxiliary plate through bearings; a protrusion is provided at the bottom end of the workpiece seat, the protrusion is integrally formed with the workpiece seat, and a threaded connection is maintained between the rotating screw and the protrusion.

8. A high-efficiency internal spline differential radial reciprocating grinding device as claimed in claim 7, characterized in that: The radial workpiece drive includes a movable plate, a movable slider, a movable slide rail, a side wing plate, a lead screw, a workpiece radial motor and a connecting ear; the movable slide rail is arranged on the workpiece seat in a forward and backward extending manner; the movable plate is horizontally distributed, and the movable slide rail is fixedly installed on the lower end surface of the movable plate and is installed in matching with the movable slider; the fixed seat is installed on the movable plate, and a workpiece chuck is provided on one side to complete the fastening operation of the internal spline workpiece; the side wing plates are two distributed front and back, and are both arranged on the workpiece seat; the workpiece radial motor is arranged on the rear side of the workpiece seat through a bracket, and the lead screw extends forward through the side wing plate on the rear side and is connected to the side wing plate on the front side; the connecting ear is arranged on the lower end surface of the movable plate; the lead screw passes through the connecting ear, and the two are threadedly connected.

9. A high-efficiency internal spline differential radial reciprocating grinding device as claimed in claim 8, characterized in that: The workpiece rotation drive includes a transmission shaft, a driving wheel, a driven wheel and a workpiece rotation motor; the workpiece rotation motor is fixedly mounted on the movable plate through a bracket; the driving wheel is sleeved and mounted on the output shaft of the workpiece rotation motor, one end of the transmission shaft is connected to the workpiece chuck, and the other end passes through the fixed seat and extends to the right; the driven wheel is sleeved and mounted on the transmission shaft, and the driving wheel and the driven wheel maintain meshing transmission.

10. The high-efficiency internal spline differential radial reciprocating grinding device according to claim 1, characterized in that: The equipment base is also provided with a recovery structure, which includes a recovery chamber, a recovery pipe, a liquid pump and a drainage pipe; the recovery chamber is arranged inside the equipment base and is located below the processing knife; a groove is also provided on the upper end surface of the equipment base corresponding to the recovery chamber, and a vertically distributed recovery pipe is provided in the center of the groove, and the lower end of the recovery pipe leads to the recovery chamber; a filter net is also provided in the center of the groove and above the connecting pipe; filter cotton is provided at the bottom of the recovery chamber; the drainage pipe is obliquely distributed on the equipment base, and the input end leads to the recovery chamber; the liquid pump is provided on the drainage pipe.

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