A device and method for machining large-taper pocket holes of a cage

Abstract

The present invention relates to the technical field of combined processing, and specifically discloses a device and method for processing large-taper pocket holes of a retaining frame, wherein the device and method for processing large-taper pocket holes of a retaining frame include a clamping unit and a combined processing unit, wherein the clamping unit includes a circumferential limit piece, a radial limit piece and a deflection drive piece; the combined processing unit includes a sleeve, a rotating piece and a combined tool; the present invention performs combined processing on pocket holes by using multiple sets of set drills and forming boring cutters in the combined tool, and before the pocket holes are processed, the retaining frame is synchronously limited in the circumferential direction and radial direction to prevent the retaining frame from being deformed during the pocket hole processing so as to ensure the processing accuracy of the pocket holes, and after the pocket holes are processed, the circumferential limit and radial limit are synchronously released, and the retaining frame is driven to automatically deflect so as to rotate the next point to be processed to be directly below the combined tool, which can greatly improve the processing efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of combined processing, and more specifically, to a device and method for processing large-taper pocket holes of a retaining frame. Background Art

[0002] The cage is an important component of the bearing. It is located inside the bearing to support the rolling elements. Pockets are provided on the cage to isolate the rolling elements and guide them to move on their normal tracks. For spherical roller bearings, the bottom taper of the pockets on the cage is relatively large. When a trepanning drill is used to rough-machine the pockets, due to the large amount of cutting per time, under the action of the circumferential cutting force of the trepanning drill, the areas on both sides of the pockets on the cage lack circumferential and radial limit supports, and are prone to bending and deformation, resulting in chatter marks on the inner wall of the pockets, affecting the machining accuracy of the pockets. Summary of the invention

[0003] In order to overcome the above technical problems, the present invention proposes a device and method for machining large-taper pocket holes of a cage.

[0004] The purpose of the present invention can be achieved through the following technical solutions:

[0005] A device for machining large-taper pocket holes of a cage, used for machining pocket holes of a cage, comprising:

[0006] A frame, on which a transverse moving member, a longitudinal moving member connected to the transverse moving member, a fine-tuning member connected to the longitudinal moving member, and a tooling table arranged on the fine-tuning member are arranged, and the frame is also provided with a lifting member, and the lifting member includes a lifting slide located above the tooling table;

[0007] A clamping unit is arranged on a workbench, and comprises a clamping ring adapted to a retaining frame, and the clamping ring is rotatably mounted on the workbench; a circumferential limiting member for limiting the circumferential position of the retaining frame is arranged inside the clamping ring, and a radial limiting member for limiting the radial position of the retaining frame is movably arranged on one side of the clamping ring;

[0008] The combined processing unit is arranged on a lifting slide, and includes a sleeve vertically fixed on the lifting slide and a rotating part rotatably embedded in the sleeve, and a combined tool is detachably installed on the lower end of the rotating part; the lifting slide is also provided with a rotating driving part for driving the rotating part.

[0009] As a further solution of the present invention: the circumferential limiter comprises a first slide groove provided on the workbench and second slide grooves symmetrically distributed on both sides of the first slide groove, the first slide groove and the second slide groove are vertically distributed, a sliding frame is slidably arranged in the first slide groove, a circumferential expansion plate adapted to the inner wall of the retaining frame is slidably arranged in the second slide groove, and a connecting rod is hinged between the circumferential expansion plate and the sliding frame;

[0010] A driving motor is installed in the middle of the tooling table, an output end of the driving motor is connected to a driving gear, and a rack meshing with the driving gear is arranged on one side of the sliding frame.

[0011] As a further solution of the present invention: a plurality of elastic expansion blocks are equidistantly arranged on the end surface of the circumferential expansion support plate facing the retaining frame, the contour of the elastic expansion block is adapted to the pocket hole, and a friction resistance sheet is arranged on the end surface of the elastic expansion block facing the retaining frame.

[0012] As a further solution of the present invention: the radial limiter comprises a lifting frame which is escalably arranged on the tooling table, and the lifting frame is provided with a first groove for accommodating the retaining frame and an avoidance groove for accommodating the combined tool;

[0013] A first extrusion plate adapted to the outer circumference of the retaining frame is movably provided on one side of the first groove, and a second extrusion plate adapted to the inner circumference of the retaining frame is movably provided on the other side of the first groove. Two groups of the first extrusion plates and the second extrusion plates are provided and are symmetrically distributed on both sides of the avoidance groove; a driving component for driving the first extrusion plates and the second extrusion plates is provided in the lifting frame.

[0014] As a further solution of the present invention: the driving assembly includes a hydraulic chamber opened in the lifting frame, the hydraulic chamber is filled with hydraulic oil, a partition is arranged in the hydraulic chamber, the partition separates the hydraulic chamber into an upper chamber body and a lower chamber body, and a first chamber and a second chamber are respectively opened on both sides of the bottom of the lifting frame;

[0015] A first through groove is provided between the first chamber and the lower warehouse body, and the first extrusion plate is slidably embedded in the first chamber; a second through groove is provided between the second chamber and the lower warehouse body, and the second extrusion plate is slidably embedded in the second chamber; a piston plate is slidably provided in the upper warehouse body, and a telescopic frame that movably penetrates the lifting frame is connected to the piston plate; a latch is provided on the sliding frame, and a waist-shaped slot adapted to the latch is provided on the telescopic frame.

[0016] As a further solution of the present invention: a deflection drive component is also provided on the workbench, and the deflection drive component includes an incomplete gear rotatably mounted on the workbench, a gear ring meshing with the incomplete gear is provided on the inner side of the retaining ring, and the output shaft of the drive motor is connected to the incomplete gear by a transmission belt.

[0017] As a further solution of the present invention: the rotating part includes a rotating cylinder rotatably arranged in the sleeve, a connecting head is installed at the lower end of the rotating cylinder, a sleeve adapted to the combined tool is embedded in the connecting head, a plurality of extrusion grooves are opened circumferentially on the sleeve, a pressure ring is connected to the protruding end of the sleeve, and a plurality of tension springs are connected between the pressure ring and the connecting head.

[0018] As a further solution of the present invention: a first air passage is axially opened in the rotating drum, a second air passage connected to the first air passage is axially opened in the connecting head, a plurality of jet grooves are circumferentially opened on the jacket, and an air hole connected to the second air passage is opened at the upper end of the jet groove.

[0019] As a further solution of the present invention: an air supply component is arranged on the lifting slide, and the air supply component includes a sealing sleeve fixed on the lifting slide, the lower end of the sealing sleeve is rotatably connected to the rotating drum, a sealing ring is arranged at the rotatable connection between the sealing sleeve and the rotating drum, the upper end of the sealing sleeve is connected with an air nozzle, and an air cavity connecting the air nozzle and the first air channel is opened in the sealing sleeve.

[0020] The present invention also discloses a method for machining a large-taper pocket hole of a cage, comprising the following steps:

[0021] S1. The retainer is limited circumferentially and radially by the clamping unit;

[0022] S2. Adjust the position of the to-be-processed point of the retainer to be directly below the combined tool;

[0023] S3, switching the combined tool to a trepanning drill, and performing rough machining on the vertical section and the conical section of the pocket hole at the processing point in sequence;

[0024] S4. Switch the combined tool to a forming boring tool, and perform precision boring on the vertical section and conical section of the pocket until the pocket reaches the standard size.

[0025] Beneficial effects of the present invention:

[0026] The circumferential limiter, radial limiter and deflection drive member in the present invention can maintain synchronous motion under the driving action of the driving motor, so as to achieve synchronous circumferential limit and radial limit of the retainer before the pocket hole is processed, and prevent the retainer from being deformed during the pocket hole processing, so as to ensure the processing accuracy of the pocket hole. After the pocket hole processing is completed, the circumferential limit and radial limit are synchronously released, and the retainer is driven to automatically deflect, so as to rotate the next point to be processed to just below the combined tool, which can greatly improve the processing efficiency.

[0027] In addition, during the pocket processing, a combination of using multiple sets of trepanning drills for step-by-step trepanning and cutting, and then using a forming boring cutter for fine boring, can effectively avoid the problem of tool wear caused by large single cutting volume, while ensuring that the vertical and tapered section allowances of the large-taper pocket are consistent, which can effectively improve the processing accuracy of the finished pocket. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] Figure 1 is a schematic diagram of the structure of the cage;

[0030] Figure 2 It is a three-dimensional schematic diagram of a device for machining large-taper pocket holes of a cage according to the present invention;

[0031] Figure 3 A schematic diagram of a state of pocket rough machining;

[0032] Figure 4 It is a schematic diagram of another state of pocket hole rough machining;

[0033] Figure 5 It is a schematic structural diagram of a transverse moving part, a longitudinal moving part and a fine adjustment part in a device for machining a large-taper pocket hole of a cage according to the present invention;

[0034] Figure 6 It is a structural schematic diagram of a tooling table and a clamping unit in a device for machining large-taper pocket holes of a cage according to the present invention;

[0035] Figure 7 It is a structural schematic diagram of a clamping unit in a device for machining large-taper pocket holes of a cage according to the present invention;

[0036] Figure 8 A top view of a clamping unit in a device for machining large-taper pocket holes of a cage according to the present invention;

[0037] Fig. 9 It is a schematic structural diagram of a circumferential limiter and a deflection drive member in a device for machining a large-taper pocket hole of a cage according to the present invention;

[0038] Fig.10 It is a structural schematic diagram of a circumferential expansion support plate in a device for machining a large-taper pocket hole of a cage according to the present invention;

[0039] Fig.11 It is a structural schematic diagram of a radial stopper in a device for machining a large-taper pocket hole of a cage according to the present invention;

[0040] Fig.12 It is a structural schematic diagram of a radial stopper in a device for machining a large-taper pocket hole of a cage according to the present invention from another perspective;

[0041] Fig.13 It is a schematic diagram of the internal structure of a lifting frame in a device for machining large-taper pocket holes of a retainer according to the present invention;

[0042] Fig.14 It is a structural schematic diagram of a lifting member in a device for machining a large-taper pocket hole of a retainer according to the present invention;

[0043] Fig.15 It is a structural schematic diagram of a combined processing unit in a large-taper pocket processing device for a cage according to the present invention;

[0044] Fig.16 It is a cross-sectional view of a rotating part in a device for machining a large-taper pocket hole of a cage according to the present invention;

[0045] Fig.17 for Fig.16 Enlarged view of point A in the middle;

[0046] Fig.18 It is a structural schematic diagram of a connector and a combined tool in a device for machining large-taper pocket holes of a retainer according to the present invention;

[0047] Fig.19 It is a schematic structural diagram of a jacket and a pressure ring in a device for machining a large-taper pocket hole of a retainer according to the present invention;

[0048] Fig. 20 The present invention is a schematic structural diagram of a sleeve and a pressure ring in a device for machining large-taper pockets of a retainer from another perspective.

[0049] In the figure:

[0050] 100, cage; 101, pocket;

[0051] 200, frame; 210, transverse moving part; 211, transverse moving guide rail; 212, transverse moving motor; 213, transverse moving screw rod; 214, transverse moving slide; 220, longitudinal moving part; 221, longitudinal moving guide rail; 222, longitudinal moving motor; 223, longitudinal moving screw rod; 224, longitudinal moving slide; 230, fine-tuning part; 231, fine-tuning guide rail; 232, fine-tuning motor; 233, fine-tuning screw rod; 234, tooling table; 240, lifting part; 241, lifting guide rail; 242, lifting motor; 243, lifting screw rod; 244, lifting slide;

[0052] 300, clamping unit; 310, snap ring; 311, gear ring; 320, circumferential limiter; 321, first slide; 322, slide frame; 3221, latch; 323, drive motor; 324, drive gear; 325, rack; 326, second slide; 327, circumferential expansion plate; 3271, elastic expansion block; 3272, friction resistance sheet; 328, connecting rod; 329, thrust spring; 330, radial limiter; 331, first guide rod; 332, lift Lowering frame; 3321, hydraulic chamber; 3322, partition; 3323, first chamber; 3324, first through slot; 3325, first extrusion plate; 3326, second chamber; 3327, second through slot; 3328, second extrusion plate; 3329, piston plate; 333, first supporting spring; 334, first groove; 335, avoidance slot; 336, telescopic frame; 3361, oval-shaped slot; 340, deflection drive member; 341, incomplete gear; 342, transmission belt;

[0053] 400, combined processing unit; 410, rotating driving member; 411, rotating motor; 412, driving belt; 413, pulley; 420, air supply member; 421, sealing sleeve; 422, air nozzle; 423, air cavity; 424, sealing ring; 430, sleeve; 431, second guide rod; 432, second supporting spring; 433, lower pressure frame; 440, rotating member; 441, rotating drum; 4411, first air channel; 442, connecting head; 4421, second air channel; 443, jacket; 4431, extrusion groove; 4432, jet groove; 4433, air hole; 444, pressure ring; 445, tension spring; 450, combined tool. DETAILED DESCRIPTION

[0054] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Each example may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples.

[0055] See also Figure 2 The first aspect of the present invention discloses a large-taper pocket hole processing device for a cage, which is used to process the pocket hole 101 (such as Figure 1 As shown), comprising a frame 200, a clamping unit 300 and a combined processing unit 400;

[0056] See also Figure 5 and Fig.14 The frame 200 is provided with a transverse member 210, a longitudinal member 220 connected to the transverse member 210, a fine-tuning member 230 connected to the longitudinal member 220, and a tooling table 234 provided on the fine-tuning member 230. The frame 200 is also provided with a lifting member 240, and the lifting member 240 includes a lifting slide 244 located above the tooling table 234;

[0057] See also Figure 6 , Figure 7 and Figure 8 The clamping unit 300 is arranged on the tooling table 234, and includes a clamping ring 310 adapted to the retaining frame 100, and the clamping ring 310 is rotatably mounted on the tooling table 234; a circumferential limiting member 320 for circumferentially limiting the retaining frame 100 is arranged inside the clamping ring 310, and a radial limiting member 330 for radially limiting the retaining frame 100 is movably arranged on one side of the clamping ring 310;

[0058] See also Fig.14 , Fig.15 and Fig.16The combined processing unit 400 is arranged on the lifting slide 244, including a sleeve 430 vertically fixed on the lifting slide 244 and a rotating member 440 rotatably embedded in the sleeve 430, and a combined tool 450 is detachably installed at the lower end of the rotating member 440; the lifting slide 244 is also provided with a rotating driving member 410 for driving the rotating member 440.

[0059] Specifically, the retaining frame 100 is clamped into the retaining ring 310, and the horizontal position of the tooling table 234 is adjusted by the cooperation of the transverse moving member 210, the longitudinal moving member 220 and the fine-tuning member 230, so that the processing point of the retaining frame 100 is moved to the bottom of the combined tool 450; the lifting slide 244 and the combined processing unit 400 are driven to move downward synchronously by the lifting member 240, and the radial limiting member 330 is pressed downward by the sleeve 430 to radially limit the processing point of the retaining frame 100 to prevent radial deformation during the processing of the pocket hole 101, and then the circumferential limiting member 320 in the retaining ring 310 is driven to expand radially, and the retaining frame 100 is circumferentially limited to prevent circumferential displacement during the processing of the retaining frame 100; after the retaining frame 100 is clamped, the rotating member 440 is driven to rotate by the rotating driving member 410, thereby driving the combined tool 450 to rotate, and the processing point of the retaining frame 100 can be subjected to the combined processing of the pocket hole 101.

[0060] See also Figure 3 and Figure 4 For the combined processing of the pocket hole 101 with a large taper, the combined tool 450 needs to be coordinated with multiple types. First, use the first trepanning drill to perform rough processing on the processing point. The cutting diameter of the first trepanning drill matches the inner diameter of the vertical section of the pocket hole 101. Then replace the second trepanning drill with a slightly smaller diameter to perform rough processing on the tapered section of the pocket hole 101. According to the taper size of the pocket hole 101, the third trepanning drill or the fourth trepanning drill can be used for processing. There is no limit on the number of specific trepanning drills. The more the number, the finer the processing gradient. After the rough processing is completed, the vertical section and tapered section of the pocket hole 101 have uniform margins, and then use the forming boring tool to perform fine boring on the pocket hole 101 until the pocket hole 101 reaches the required processing size.

[0061] It should be noted that the above-mentioned combined processing method of first using multiple sets of drilling tools to perform step-by-step boring processing and then using a forming boring tool to perform fine boring can effectively avoid the problem of tool wear caused by large single cutting volume, while ensuring that the vertical section and tapered section allowances of the large-taper pocket 101 tend to be consistent, which can effectively improve the processing accuracy of the finished pocket 101.

[0062] In one embodiment, see Figure 5The transverse member 210 includes a transverse guide rail 211 and a transverse motor 212 fixed on the frame 200. A transverse slide 214 is slidably connected to the transverse guide rail 211. A transverse screw rod 213 is connected to the output end of the transverse motor 212. The transverse slide 214 is threadedly connected to the transverse screw rod 213. The transverse motor 212 drives the transverse screw rod 213 to rotate, which can drive the transverse slide 214 to slide horizontally along the transverse guide rail 211, thereby realizing the lateral position adjustment of the tooling table 234.

[0063] The longitudinal moving member 220 includes a longitudinal moving guide rail 221 and a longitudinal moving motor 222 fixed on the transverse moving slide 214. The longitudinal moving guide rail 221 is slidably connected to the longitudinal moving slide 224. The output end of the longitudinal moving motor 222 is connected to a longitudinal moving screw rod 223, and the longitudinal moving screw rod 223 is threadedly connected to the longitudinal moving slide 224. The longitudinal moving motor 222 drives the longitudinal moving screw rod 223 to rotate, so as to drive the longitudinal moving slide 224 to slide longitudinally along the longitudinal moving guide rail 221, thereby realizing the longitudinal position adjustment of the tooling table 234.

[0064] The fine-tuning member 230 includes a fine-tuning guide rail 231 and a fine-tuning motor 232 fixed on the longitudinal sliding table 224. The tooling table 234 is slidably arranged on the fine-tuning guide rail 231. The output end of the fine-tuning motor 232 is connected to a fine-tuning screw 233. The tooling table 234 is threadedly connected to the fine-tuning screw 233. The fine-tuning motor 232 drives the fine-tuning screw 233 to rotate, which can drive the tooling table 234 to perform further fine-tuning to ensure the alignment of the to-be-processed point with the combined processing unit 400.

[0065] See also Fig.14 The lifting member 240 also includes a lifting guide rail 241 and a lifting motor 242 fixed on the frame 200. The lifting slide 244 is slidably set on the lifting guide rail 241. The output end of the lifting motor 242 is connected to a lifting screw rod 243, and the lifting slide 244 is threadedly connected to the lifting screw rod 243; the lifting motor 242 drives the lifting screw rod 243 to rotate, thereby driving the lifting slide 244 to slide along the lifting guide rail 241 to achieve height adjustment of the lifting slide 244.

[0066] In yet another embodiment, see Fig. 9The circumferential limiter 320 includes a first slide groove 321 provided on the tooling table 234 and second slide grooves 326 symmetrically distributed on both sides of the first slide groove 321. The first slide groove 321 and the second slide groove 326 are vertically distributed. A sliding frame 322 is slidably arranged in the first slide groove 321. A circumferential expansion plate 327 adapted to the inner wall of the retaining frame 100 is slidably arranged in the second slide groove 326. A connecting rod 328 is hinged between the circumferential expansion plate 327 and the sliding frame 322. A driving motor 323 is installed in the middle of the tooling table 234. The output end of the driving motor 323 is connected to a driving gear 324. A rack 325 meshing with the driving gear 324 is arranged on one side of the sliding frame 322.

[0067] Specifically, the driving motor 323 drives the driving gear 324 to rotate, and the meshing transmission of the driving gear 324 and the rack 325 can drive the sliding frame 322 to slide along the first sliding groove 321, and then under the transmission of the connecting rod 328, the circumferential expansion plates 327 on both sides can be driven to slide synchronously along the corresponding second sliding groove 326 to achieve radial expansion of the circumferential expansion plates 327 until the circumferential expansion plates 327 contact the inner wall of the retaining frame 100, thereby achieving circumferential limitation of the retaining frame 100 and preventing circumferential deflection of the retaining frame 100 during the combined processing.

[0068] For further information, see Fig.10 A plurality of elastic expansion blocks 3271 are equidistantly arranged on the end surface of the circumferential expansion support plate 327 facing the retainer 100, the contour of the elastic expansion block 3271 is adapted to the pocket hole 101, and a friction resistance sheet 3272 is arranged on the end surface of the elastic expansion block 3271 facing the retainer 100;

[0069] Since the pocket holes 101 on the retainer 100 are processed sequentially in the circumferential direction, when the retainer 100 is circumferentially limited, if the position on the retainer 100 that is opposite to the elastic expansion block 3271 on the circumferential expansion plate 327 has not been processed with the pocket holes 101, when the circumferential expansion plate 327 radially expands and contacts the retainer 100, the elastic expansion block 3271 retracts into the circumferential expansion plate 327 under the limiting effect of the retainer 100 until the friction resistance sheet 3272 is in contact with the inner part of the retainer 100. The retainer 100 is fitted with the wall, and the friction resistance between the friction resistance sheet 3272 and the retainer 100 can realize the circumferential limit of the retainer 100; if the position on the retainer 100 that is opposite to the elastic expansion block 3271 on the circumferential expansion support plate 327 has been processed to form a pocket 101, when the circumferential expansion support plate 327 radially expands and contacts with the retainer 100, the elastic expansion block 3271 can just fit into the corresponding pocket 101, and the retainer 100 can be circumferentially limited by the elastic expansion block 3271;

[0070] That is to say, the elastic telescopic block 3271 can be adaptively telescopically adjusted according to whether the pocket 101 on the retaining frame 100 is processed or not. When the pocket 101 has not been processed, the elastic telescopic block 3271 is retracted into the circumferential expansion plate 327, and the friction resistance plate 3272 is used to circumferentially limit the retaining frame 100; when the pocket 101 is processed and formed, the elastic telescopic block 3271 embedded in the pocket 101 can be used to circumferentially limit the retaining frame 100; in this way, no matter what processing state the retaining frame 100 is in, the circumferential limiting effect of the circumferential expansion plate 327 on the retaining frame 100 can be guaranteed.

[0071] It should be noted that in order to ensure that the elastic expansion blocks 3271 on the circumferential expansion plate 327 can be aligned with the corresponding pockets 101 and smoothly embedded in the corresponding pockets 101, the interval between adjacent elastic expansion blocks 3271 on the circumferential expansion plate 327 is the same as the interval between adjacent pockets 101 on the retaining frame 100. After each group of pockets 101 is processed, the retaining frame 100 needs to rotate circumferentially relative to the retaining ring 310 by a fixed angle a°. The angle a° is related to the number T of pockets 101 that need to be processed by the retaining frame 100, specifically a*T=360.

[0072] In addition, the function of the above-mentioned friction resistance sheet 3272 is to enhance the friction resistance between the elastic expansion block 3271 and the retaining frame 100. The friction resistance sheet 3272 is a prior art, and the specific material is not limited. It can be a polymer friction sheet material, polyamide, polytetrafluoroethylene, etc.; it can also be a carbon-based friction material, that is, a friction material made of carbon powder or carbon fiber as a matrix, adding an appropriate amount of organic binder and filler, and adopting a hot pressing molding process; it can also be a resin-based friction material, that is, a friction material made of organic polymer as a matrix, metal fiber, organic fiber, inorganic fiber as a reinforcing material, and through mixing, pressing, curing and other processes.

[0073] See also Fig.11 and Fig.12 The radial stopper 330 includes a lifting frame 332 which is movably arranged on the tooling table 234, and a first groove 334 for accommodating the holder 100 and an avoidance groove 335 for accommodating the combined tool 450 are provided on the lifting frame 332; a first extrusion plate 3325 adapted to the outer circumference of the holder 100 is movably arranged on one side of the first groove 334, and a second extrusion plate 3328 adapted to the inner circumference of the holder 100 is movably arranged on the other side of the first groove 334, and two groups of the first extrusion plates 3325 and the second extrusion plates 3328 are provided and symmetrically distributed on both sides of the avoidance groove 335; a driving component for driving the first extrusion plate 3325 and the second extrusion plate 3328 is provided in the lifting frame 332;

[0074] Specifically, before processing the pocket hole 101, the position of the tooling table 234 is adjusted so that the avoidance groove 335 is located directly below the combined tool 450, and the lifting frame 332 descends until the retaining frame 100 is completely embedded in the first groove 334, and the first extrusion plates 3325 on both sides of the avoidance groove 335 are just located on both sides of the point to be processed, and the second extrusion plates 3328 on both sides of the avoidance groove 335 are also just located on both sides of the point to be processed, and the first extrusion plate 3325 and the second extrusion plate 3328 are driven to extend synchronously by the driving assembly until the first extrusion plate 3325 contacts the outer peripheral surface of the retaining frame 100, and the second extrusion plate 3328 contacts the inner peripheral surface of the retaining frame 100, and the first extrusion plate 3325 and the second extrusion plate 3328 are used to perform bidirectional extrusion and limit the point to be processed of the retaining frame 100, thereby avoiding radial bending deformation of the retaining frame 100 during the processing of the pocket hole 101.

[0075] It should be noted that since the pockets 101 will be subjected to the circumferential cutting force of the combined tool 450 during the machining process, the first extrusion plate 3325 and the second extrusion plate 3328 are symmetrically arranged on both sides of the avoidance groove 335, and the contours of the first extrusion plate 3325 and the second extrusion plate 3328 are adapted to the uncut areas between adjacent pockets 101 on the retaining frame 100, thereby further preventing the pockets 101 from twisting and deformation, thereby ensuring the machining accuracy of the pockets 101.

[0076] See also Fig.13 The driving assembly includes a hydraulic bin 3321 provided in the lifting frame 332, the hydraulic bin 3321 is filled with hydraulic oil, a partition 3322 is provided in the hydraulic bin 3321, the partition 3322 separates the hydraulic bin 3321 into an upper bin body and a lower bin body, and a first chamber 3323 and a second chamber 3326 are respectively provided on both sides of the bottom of the lifting frame 332; a first through groove 3324 is provided between the first chamber 3323 and the lower bin body, and the first extrusion plate 3325 is slidably embedded in the first chamber 3323; a second through groove 3327 is provided between the second chamber 3326 and the lower bin body, and the second extrusion plate 3328 is slidably embedded in the second chamber 3326; a piston plate 3329 is slidably provided in the upper bin body, and a telescopic frame 336 that movably penetrates the lifting frame 332 is connected to the piston plate 3329;

[0077] Specifically, when the lifting frame 332 is lowered into place, the piston plate 3329 is driven to move through the telescopic frame 336, thereby squeezing the hydraulic oil in the upper warehouse body into the lower warehouse body, and then the hydraulic oil enters the first chamber 3323 through the first through groove 3324, and at the same time enters the second chamber 3326 through the second through groove 3327, thereby pushing the first extrusion plate 3325 and the second extrusion plate 3328 to extend synchronously, so as to achieve the inner and outer side clamping and limiting of the retaining frame 100.

[0078] See also Fig. 9 and Fig.11 As for the driving mode of the telescopic frame 336, in this embodiment, a latch 3221 is provided on the sliding frame 322, and a waist-shaped slot 3361 adapted to the latch 3221 is provided on the telescopic frame 336; when the telescopic frame 336 is in the extended state, the waist-shaped slot 3361 is located directly above the latch 3221;

[0079] When the cam 330 is in the state of being moved, the first and second cams 332 are in the state of being moved in a synchronous manner, so as to enable the cam 330 to move in a synchronous manner and thus prevent the cam 330 from moving in a synchronous manner.

[0080] Furthermore, after processing each group of pocket holes 101, the retainer 100 needs to be rotated to one side by a corresponding angle so that the next group of points to be processed is rotated to the bottom of the combined tool 450; for this purpose, please refer to Figure 6 and Fig. 9 The tooling table 234 is also provided with a deflection driving member 340, and the deflection driving member 340 includes an incomplete gear 341 rotatably mounted on the tooling table 234, and a gear ring 311 meshing with the incomplete gear 341 is provided on the inner side of the snap ring 310, and the output shaft of the drive motor 323 is connected to the incomplete gear 341 through a transmission belt 342;

[0081] Specifically, when the driving motor 323 rotates forward and drives the sliding frame 322 to slide toward the radial limiting member 330, the circumferential limiting member 320 and the radial limiting member 330 act synchronously, thereby realizing the circumferential limiting and radial limiting of the retaining frame 100. Under the transmission action of the transmission belt 342, the incomplete gear 341 also rotates synchronously, but in this process, the gear teeth on the incomplete gear 341 do not mesh with the gear ring 311, so that the retaining ring 310 does not rotate.

[0082] When the driving motor 323 reverses and drives the sliding frame 322 to slide toward the side away from the radial limit member 330, the circumferential limit member 320 and the radial limit member 330 are reset synchronously, thereby releasing the circumferential limit and radial limit of the retaining frame 100. Under the transmission action of the transmission belt 342, the incomplete gear 341 also rotates in the opposite direction synchronously. During this process, the gear teeth on the incomplete gear 341 can just engage with the ring gear 311, thereby driving the retaining ring 310 to rotate, and then driving the retaining frame 100 in the retaining ring 310 to deviate to one side by a corresponding angle, so as to realize automatic feeding of the retaining frame 100, so as to facilitate the rotation of the next group of points to be processed to the bottom of the combination tool 450.

[0083] It should be noted that after the driving motor 323 drives the sliding frame 322 to slide back and reset, the rack 325 on the sliding frame 322 just disengages from the driving gear 324, and then the driving motor 323 continues to reverse and drive the incomplete gear 341 to drive the retaining ring 310 to rotate. During this process, the sliding frame 322 can maintain its initial position after reset. Of course, in order to enable the driving motor 323 to smoothly drive the sliding frame 322 during the next forward rotation, a side of the first sliding groove 321 away from the radial limit member 330 is provided with a radial limit member 330 that is aligned with the sliding frame 322 abuts against the thrust spring 329, and the thrust spring 329 can apply a thrust to the sliding frame 322, so that the rack 325 on the sliding frame 322 is always in contact with the driving gear 324. When the driving motor 323 reverses, the end of the rack 325 will be briefly disengaged from the driving gear 324 and then contact the driving gear 324 again under the push of the thrust spring 329. At this time, the sliding frame 322 will oscillate repeatedly at the initial position. When the driving motor 323 rotates forward again, the rack 325 on the sliding frame 322 can immediately engage with the driving gear 324.

[0084] It is worth noting that the above-mentioned circumferential limit member 320, radial limit member 330 and deflection drive member 340 can maintain synchronous action under the driving action of the driving motor 323, so as to realize synchronous circumferential limit and radial limit of the retaining frame 100 before the pocket hole 101 is processed, so as to ensure the processing accuracy of the pocket hole 101. After the pocket hole 101 is processed, the circumferential limit and radial limit are released synchronously, and the retaining frame 100 is driven to deflect automatically at the same time, so as to rotate the next point to be processed to be directly below the combination tool 450, which can greatly improve the processing efficiency.

[0085] In addition, considering that the lifting frame 332 can be driven by the downward movement of the combined processing unit 400, for this purpose, please refer to Fig.11 A plurality of first guide rods 331 are vertically fixed on the tooling table 234, and the lifting frame 332 is slidably sleeved on the first guide rods 331. The first guide rods 331 are provided with first supporting springs 333 that abut against the lifting frame 332;

[0086] See also Fig.15 , the sleeve 430 is vertically provided with a plurality of groups of retractable second guide rods 431, the lower end of the second guide rods 431 is connected to a lower pressure frame 433, the second guide rods 431 are sleeved with a second supporting spring 432 that abuts against the lower pressure frame 433, and the elastic coefficient of the second supporting spring 432 is greater than the elastic coefficient of the first supporting spring 333;

[0087] Specifically, when the lifting member 240 drives the lifting slide 244 downward, the sleeve 430 and the rotating member 440 move downward synchronously until the lower pressing frame 433 contacts the lifting frame 332, thereby pressing the lifting frame 332 downward, so that the lifting frame 332 slides vertically along the first guide rod 331, and the first supporting spring 333 is gradually compressed until the lifting frame 332 drops into place and buckles on the retaining frame 100; in the subsequent processing of the pocket hole 101, since the combined tool 450 needs to gradually feed downward and cut the retaining frame 101, 0. During the downward movement of the combined tool 450, the sleeve 430 and the rotating member 440 also move downward synchronously. At this time, the first supporting spring 333 cannot be further compressed, thereby causing the second supporting spring 432 to begin to be compressed, and the second guide rod 431 gradually retracts into the sleeve 430 to ensure that during the downward movement of the combined tool 450, the lower pressure frame 433 can always press the lifting frame 332 to ensure that the height of the lifting frame 332 does not change, thereby providing a stable radial limiting effect on the retaining frame 100.

[0088] It should be noted that, since the elastic coefficient of the second top support spring 432 is greater than the elastic coefficient of the first top support spring 333, during the downward process of the lifting frame 332, only the first top support spring 333 is compressed, and the second top support spring 432 is not compressed; only after the lifting frame 332 is fully pressed down into place, because the first top support spring 333 is fully compressed into place at this time, and the sleeve 430 needs to continue to move downward, the second top support spring 432 begins to be compressed, so as to ensure that the lower pressing frame 433 always presses the lifting frame 332.

[0089] In further embodiments, see Fig.14 and Fig.15 The rotating driving member 410 includes a rotating motor 411 fixedly mounted on the lifting slide 244, a pulley 413 is provided on the rotating member 440, and a driving belt 412 is connected between the output end of the rotating motor 411 and the pulley 413; under the transmission of the driving belt 412, the pulley 413 is driven to rotate by the rotating motor 411, thereby driving the rotating member 440 to rotate circumferentially relative to the sleeve 430, so as to realize the rotation of the combined tool 450.

[0090] For further information, see Fig.16 , Fig.18 and Fig.19 The rotating member 440 includes a rotating cylinder 441 rotatably disposed in the sleeve 430, a connector 442 is installed at the lower end of the rotating cylinder 441, a jacket 443 adapted to the combined tool 450 is embedded in the connector 442, a plurality of extrusion grooves 4431 are opened circumferentially on the jacket 443, a pressing ring 444 is connected to the protruding end of the jacket 443, and a plurality of tension springs 445 are connected between the pressing ring 444 and the connector 442;

[0091] Specifically, the rotating cylinder 441 can rotate circumferentially relative to the sleeve 430, the connecting head 442 and the rotating cylinder 441 are relatively fixed, the combined tool 450 is inserted into the sleeve 443, and the pressure ring 444 is pulled upward by the tension spring 445. The sleeve 443 can be pressed into the connecting head 442 by the pressure ring 444, so that the extrusion groove 4431 on the sleeve 443 is compressed and contracted, thereby reducing the inner diameter of the sleeve 443, so that the sleeve 443 clamps the combined tool 450, thereby realizing the assembly of the combined tool 450 and the rotating member 440; when the combined tool 450 needs to be pulled out for replacement, the pressure ring 444 is pulled down to separate the pressure ring 444 from the sleeve 443, and the sleeve 443 is radially expanded and reset, and the combined tool 450 can be taken out from the sleeve 443.

[0092] For further information, see Fig.16 and Fig. 20 The rotating cylinder 441 has a first air passage 4411 axially formed in it, the connecting head 442 has a second air passage 4421 axially formed in it which is connected to the first air passage 4411, the jacket 443 has a plurality of air injection grooves 4432 circumferentially formed on it, and the upper end of the air injection groove 4432 has an air hole 4433 which is connected to the second air passage 4421;

[0093] During the processing of the pocket hole 101, air is blown into the first air channel 4411, and the air flow enters the second air channel 4421, and then enters the corresponding jet slot 4432 through each air hole 4433 and is ejected from the bottom of the jet slot 4432, so as to blow and clean the debris generated by cutting in the pocket hole 101, so as to prevent the debris from being retained in the pocket hole 101 and affecting the normal processing of the pocket hole 101. At the same time, the high-speed airflow can cool the combination tool 450, thereby increasing the service life of the combination tool 450.

[0094] See also Fig.16 and Fig.17Considering that the rotating member 440 is in a state of continuous rotation as a whole, for the air supply of the first air channel 4411, an air supply member 420 is provided on the lifting slide 244, and the air supply member 420 includes a sealing sleeve 421 fixed on the lifting slide 244, the lower end of the sealing sleeve 421 is rotatably connected to the rotating cylinder 441, and a sealing ring 424 is provided at the rotatable connection between the sealing sleeve 421 and the rotating cylinder 441, and an air nozzle 422 is connected to the upper end of the sealing sleeve 421, and an air cavity 423 connecting the air nozzle 422 and the first air channel 4411 is provided in the sealing sleeve 421;

[0095] Air is blown into the air cavity 423 through the air nozzle 422, and the airflow enters the first air channel 4411 from the top of the rotating drum 441. Since the sealing sleeve 421 is rotatably sealed and connected to the rotating drum 441, the continuous rotation of the rotating drum 441 is not affected, and the uninterrupted transmission of the airflow can be guaranteed.

[0096] A second aspect of the present invention discloses a method for machining a large-taper pocket hole of a cage, comprising the following steps:

[0097] S1. The retaining frame 100 is limited in circumferential direction and radial direction by the clamping unit 300;

[0098] S2, adjusting the position of the to-be-processed point of the retaining frame 100 to be directly below the combined tool 450;

[0099] S3, switching the combined tool 450 to a trepanning drill, and performing rough machining in sequence on the vertical section and the conical section of the pocket hole 101 at the processing point to form;

[0100] S4, switching the combined tool 450 to a forming boring tool, and performing precision boring on the vertical section and the tapered section of the pocket hole 101 until the pocket hole 101 reaches a standard size.

[0101] The specific implementation methods of this embodiment are described above, but this embodiment is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Ordinary technicians in this field can also make many forms inspired by this embodiment, all of which are within the protection of this embodiment.

Claims

1. A device for machining a large-taper pocket hole of a cage, used for machining a pocket hole (101) of a cage (100), characterized in that: include: A frame (200) is provided with a transverse moving member (210), a longitudinal moving member (220) connected to the transverse moving member (210), a fine adjustment member (230) connected to the longitudinal moving member (220), and a tooling table (234) arranged on the fine adjustment member (230); the frame (200) is also provided with a lifting member (240), and the lifting member (240) includes a lifting slide (244) located above the tooling table (234); A clamping unit (300) is arranged on a tooling table (234), comprising a clamping ring (310) adapted to the retaining frame (100), the clamping ring (310) being rotatably mounted on the tooling table (234); a circumferential limiting member (320) for circumferentially limiting the retaining frame (100) is arranged inside the clamping ring (310), and a radial limiting member (330) for radially limiting the retaining frame (100) is arranged on one side of the clamping ring (310) in a liftable manner; A combined processing unit (400) is arranged on a lifting slide (244), comprising a sleeve (430) vertically fixed on the lifting slide (244) and a rotating member (440) rotatably embedded in the sleeve (430), wherein a combined tool (450) is detachably mounted on the lower end of the rotating member (440); a rotating driving member (410) for driving the rotating member (440) is also arranged on the lifting slide (244); The circumferential limiting member (320) comprises a first slide groove (321) provided on the workbench (234) and second slide grooves (326) symmetrically distributed on both sides of the first slide groove (321), the first slide groove (321) and the second slide groove (326) being vertically distributed, a sliding frame (322) being slidably disposed in the first slide groove (321), a circumferential expansion support plate (327) adapted to the inner wall of the retaining frame (100) being slidably disposed in the second slide groove (326), and a connecting rod (328) being hingedly connected between the circumferential expansion support plate (327) and the sliding frame (322); A driving motor (323) is installed in the middle of the tooling table (234); an output end of the driving motor (323) is connected to a driving gear (324); and a rack (325) meshing with the driving gear (324) is provided on one side of the sliding frame (322); The radial limiting member (330) comprises a lifting frame (332) which is escalably arranged on the tooling table (234); the lifting frame (332) is provided with a first groove (334) for accommodating the retaining frame (100) and an avoidance groove (335) for accommodating the combined tool (450); A first extrusion plate (3325) adapted to the outer circumference of the retaining frame (100) is movably provided on one side of the first groove (334), and a second extrusion plate (3328) adapted to the inner circumference of the retaining frame (100) is movably provided on the other side of the first groove (334), and two groups of the first extrusion plate (3325) and the second extrusion plate (3328) are provided and symmetrically distributed on both sides of the avoidance groove (335); a driving component for driving the first extrusion plate (3325) and the second extrusion plate (3328) is provided in the lifting frame (332).

2. A device for machining large-taper pocket holes of a cage according to claim 1, characterized in that: A plurality of elastic expansion blocks (3271) are equidistantly arranged on the end surface of the circumferential expansion support plate (327) facing the retaining frame (100); the contour of the elastic expansion block (3271) is adapted to the pocket hole (101); and a friction resistance sheet (3272) is arranged on the end surface of the elastic expansion block (3271) facing the retaining frame (100).

3. A device for machining large-taper pocket holes of a cage according to claim 1, characterized in that: The driving assembly comprises a hydraulic chamber (3321) disposed in the lifting frame (332), the hydraulic chamber (3321) being filled with hydraulic oil, a partition (3322) being disposed in the hydraulic chamber (3321), the partition (3322) dividing the hydraulic chamber (3321) into an upper chamber body and a lower chamber body, and a first chamber (3323) and a second chamber (3326) being disposed on both sides of the bottom of the lifting frame (332); A first through groove (3324) is provided between the first chamber (3323) and the lower warehouse body, and the first extrusion plate (3325) is slidably embedded in the first chamber (3323); a second through groove (3327) is provided between the second chamber (3326) and the lower warehouse body, and the second extrusion plate (3328) is slidably embedded in the second chamber (3326); a piston plate (3329) is slidably provided in the upper warehouse body, and a telescopic frame (336) movably penetrating the lifting frame (332) is connected to the piston plate (3329); a latch (3221) is provided on the sliding frame (322), and a waist-shaped circular slot (3361) adapted to the latch (3221) is provided on the telescopic frame (336).

4. A device for machining large-taper pocket holes of a cage according to claim 1, characterized in that: A deflection drive member (340) is also provided on the tooling table (234), and the deflection drive member (340) comprises an incomplete gear (341) rotatably mounted on the tooling table (234); a gear ring (311) meshing with the incomplete gear (341) is provided on the inner side of the retaining ring (310); and an output shaft of the drive motor (323) and the incomplete gear (341) are connected via a transmission belt (342).

5. A device for machining large-taper pocket holes of a cage according to claim 1, characterized in that: The rotating member (440) comprises a rotating cylinder (441) rotatably arranged in a sleeve (430), a connecting head (442) being installed at the lower end of the rotating cylinder (441), a jacket (443) adapted to the combined tool (450) being embedded in the connecting head (442), a plurality of extrusion grooves (4431) being circumferentially formed on the jacket (443), a pressing ring (444) being connected to the protruding end of the jacket (443), and a plurality of tension springs (445) being connected between the pressing ring (444) and the connecting head (442).

6. A device for machining large-taper pocket holes of a cage according to claim 5, characterized in that: A first air passage (4411) is axially provided in the rotating cylinder (441), a second air passage (4421) communicating with the first air passage (4411) is axially provided in the connecting head (442), a plurality of air injection grooves (4432) are circumferentially provided on the jacket (443), and an air hole (4433) communicating with the second air passage (4421) is provided at the upper end of the air injection groove (4432).

7. A device for machining large-taper pocket holes of a cage according to claim 6, characterized in that: An air supply component (420) is arranged on the lifting slide (244), and the air supply component (420) includes a sealing sleeve (421) fixed on the lifting slide (244), the lower end of the sealing sleeve (421) is rotatably connected to the rotating cylinder (441), a sealing ring (424) is arranged at the rotatable connection between the sealing sleeve (421) and the rotating cylinder (441), the upper end of the sealing sleeve (421) is connected to the air nozzle (422), and an air cavity (423) connecting the air nozzle (422) and the first air channel (4411) is opened in the sealing sleeve (421).

8. A method for machining a retainer large taper pocket according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1. Using a clamping unit (300) to limit the retaining frame (100) in the circumferential direction and in the radial direction; S2, adjusting the position of the to-be-processed point of the retaining frame (100) to be directly below the combined tool (450); S3, switching the combined tool (450) to a trepanning drill, and sequentially rough-machining the vertical section and the conical section of the pocket hole (101) at the processing point; S4. Switch the combined tool (450) to a profile boring tool to perform precision boring on the vertical section and the tapered section of the pocket hole (101) until the pocket hole (101) reaches a standard size.

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