Chamfer machining equipment for head of valve rod

Abstract

The valve rod head chamfering machining equipment comprises a stand column, the top of the stand column is connected with a machine tool, the left side of the top of the machine tool is connected with a guide assembly, the top of the guide assembly is connected with a vertical frame, the upper portion of the vertical frame is rotationally connected with an outer sleeve, and a horizontal shaft is movably inserted into the outer sleeve; the right end of the horizontal shaft is connected with a chamfering tool, the right side of the top of the machine tool is connected with a feeding frame, the middle of the feeding frame is rotationally connected with a steering shaft, and the left side of the outer wall of the steering shaft is connected with a rotating wheel. The valve rod head chamfering machine is reasonable in structural design, functional modules such as automatic feeding, accurate positioning, efficient machining, cooling and chip removal and finished product collection are integrated, the production efficiency is improved, meanwhile, the stability and precision of the product machining quality are guaranteed, and the valve rod head chamfering machine is suitable for volume production of valve rod head chamfering.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of valve rod machining, in particular to valve rod head chamfering equipment. BACKGROUND

[0002] The valve rod belongs to a rotary body type part and is formed through cutting machining, and is used for rotating the valve core of a ball valve, rotating the valve core through a wrench to control the opening and closing flow of the ball valve, and the valve rod is a straight quadrangular prism at the head, facilitating cooperation with a square hole of the wrench, and the valve rod head needs to be chamfered during machining to guide cooperation with the wrench and facilitate dismounting and mounting of the wrench.

[0003] The valve rod and the chamfering tool surface have high heat, and manual taking is inconvenient, and the technical personnel in the field have made research and improvement, and proposed a valve rod chamfering tool in an application No. 202121817479.X, cooling liquid is sprayed from a liquid nozzle through the setting of a liquid supply mechanism and the conveying of a liquid guide pipe, and the chamfering part is subjected to liquid spraying cooling treatment, but the technical scheme still has many deficiencies. 1. The manual clamping mode depends on the operation personnel to feed and discharge one by one, continuous production cannot be realized, and the machining efficiency is affected; 2. The manual clamping is prone to positioning errors, it is difficult to ensure that the valve rod clamping positions are the same, and the chamfering size consistency is affected; 2. The machining environment cannot be closed, and iron scraps flying not only affects the operation safety, but also pollutes the working environment.

[0004] Therefore, in order to meet the needs of high-quality and batch production of valve rod parts, the valve rod head chamfering equipment is provided. SUMMARY

[0005] The valve rod head chamfering equipment is provided to overcome the technical problems in the prior art.

[0006] In order to realize the above technical purpose and achieve the above technical effect, the application provides the following technical scheme. A valve rod head chamfering equipment, comprising a stand column, a machine tool is connected to the top of the stand column, a guide assembly is connected to the top left side of the machine tool, a stand is connected to the top of the guide assembly, an outer sleeve is rotationally connected to the upper part of the stand, a horizontal shaft is movably inserted into the outer sleeve, a chamfering tool is connected to the right end of the horizontal shaft, a feeding frame is connected to the top right side of the machine tool, a steering shaft is rotationally connected to the middle part of the feeding frame, a material steering wheel is connected to the left side of the outer wall of the steering shaft, and an operation box is connected to the outer wall of the machine tool.

[0007] Preferably, in the valve rod head chamfer processing equipment, the feeding frame comprises a storage seat, a guide groove is formed in the left end of the storage seat, a plurality of valve rods are installed in the guide groove, the bottom of the storage seat is symmetrically connected with arc-shaped plates in front and back, the outer wall of the arc-shaped plate is connected with an inclined strut between the machine tool, the right end of the two arc-shaped plates is commonly connected with a fixed arm, a round through hole is formed in the center of the fixed arm, the round through hole is rotatably connected with a steering shaft through a bearing, the inner wall of the two arc-shaped plates is commonly connected with a metal ring on the right side, a plurality of butt joints are formed in the circumferential direction of the metal ring, and a baffle is connected to the rear end of the rear arc-shaped plate.

[0008] Preferably, in the valve rod head chamfer processing equipment, the circumferential outer side wall of the material rotating wheel is circumferentially provided with four receiving grooves, the rear receiving grooves are at the same height as the horizontal shaft, the guide groove is located directly above the top receiving groove, the right side wall of the material rotating wheel is circumferentially provided with a plurality of accommodating grooves, the inner wall of the accommodating groove is connected with an elastic rod, the end of the elastic rod is connected with a steel ball, the outer wall of the steel ball abuts against the butt joint, and the number of the accommodating grooves and the butt joints is the same and is a multiple of four.

[0009] Preferably, in the valve rod head chamfer processing equipment, the right end of the steering shaft is connected with a groove wheel, the outer wall of the groove wheel is circumferentially provided with four stroke grooves, the bottom wall of the fixed arm is connected with a vertical seat between the machine tool, the left side wall of the vertical seat is connected with a conveying motor, the right side output end of the conveying motor is connected with a dial, the right end of the dial is connected with a pin column, and the pin column periodically extends into the stroke groove.

[0010] Preferably, in the valve rod head chamfer processing equipment, the guide assembly comprises two groups of guide rails fixedly connected to the upper surface of the machine tool, a horizontal sliding block is slidably connected in the guide rail, a translation seat is connected between the two horizontal sliding blocks, the bottom wall of the translation seat is connected with a linkage block, the linkage block is connected with a horizontal cylinder between the machine tool, a liquid storage cavity is formed in the translation seat, and the lower end of the stand is fixedly connected to the upper surface of the translation seat.

[0011] Preferably, in the valve rod head chamfer processing equipment, the left end of the stand is connected with a support, the bottom wall of the support is connected with a driving motor, the top output end of the driving motor is connected with a bevel gear, the left end of the support is connected with a hydraulic rod, the right end of the hydraulic rod is connected with a cylindrical block, the cylindrical block is rotatably connected with the left end of the horizontal shaft through a bearing, the right end of the stand is connected with a cover body, and the top of the cover body is connected with a pipeline fixing block.

[0012] Preferably, in the valve rod head chamfer processing equipment, the outer wall left side of the outer sleeve is connected with a bevel gear ring, the bevel gear ring is meshingly connected with the bevel gear, horizontal through grooves are formed in the inner wall of the outer sleeve in up and down directions, and limit strips are connected to the outer wall of the horizontal shaft in up and down directions.

[0013] Preferably, a valve stem head chamfering equipment, the left side wall of the cover is provided with a let-out opening, the outer sleeve penetrates the let-out opening, the inner cavity top of the cover is connected with a shower head, a drainage pipe is arranged between the stand and the pipeline fixing block, the right end of the drainage pipe is communicated with the shower head, one end of the drainage pipe extending into the liquid storage cavity is connected with a liquid pump, and the lower end of the cover is communicated with a discharge hopper.

[0014] Preferably, a valve stem head chamfering equipment, the top of the pipeline fixing block is connected with a vertical air cylinder, the top output end of the vertical air cylinder is connected with a lifting block, the left and right sides of the pipeline fixing block are provided with guide sliding rods, the lower ends of the guide sliding rods are fixedly connected with the upper surface of the cover, two longitudinal sliding blocks are movably sleeved outside the guide sliding rods, a traction rod is hingedly connected between the longitudinal sliding blocks and the lifting block, the outer wall of the longitudinal sliding block is connected with a U-shaped rod, one end of the U-shaped rod extending into the cover is connected with a clamping block, a V-shaped groove is formed in the side of the two clamping blocks close to each other, and guide holes through which the U-shaped rods pass are formed in the front and back of the cover.

[0015] Preferably, a valve stem head chamfering equipment, the machine tool is arranged in an L-shaped structure, a stepped groove is formed in the middle of the top of the machine tool, the stepped groove is located below the opening of the discharge hopper, a filter disc is detachably installed in the upper part of the inner cavity of the stepped groove, a drain pipe is communicated with the lower part of the inner cavity of the stepped groove, a discharge chute is arranged in the right part of the machine tool, and the top opening of the discharge chute is located directly below the material rotating wheel.

[0016] Compared with the prior art, the beneficial effects of the present application are: 1、The structure design of the present application is reasonable, and the present application can realize orderly automatic feeding and transfer, greatly improve the processing efficiency, realize automatic and intermittent feeding of the valve stem and switching of the work position through the cooperation of the feeding frame, the material rotating wheel, the groove wheel mechanism and the driving motor, and cooperate with the transverse air cylinder, the hydraulic rod and other executive elements to realize the rotation and feeding of the tool, thereby facilitating the valve stem chamfering processing; 2、The present application realizes accurate positioning after intermittent rotation through the elastic cooperation of the steel ball and the butt joint hole, ensures the consistency of the valve stem processing position, the vertical air cylinder at the top of the pipeline fixing block drives the clamping block to be centered and clamped through the traction rod, ensures that the valve stem axis and the tool axis coincide, is beneficial to improve the processing precision, and through the cooperation of the limiting strip and the transverse slot of the outer sleeve, the horizontal shaft can drive the chamfering tool to rotate at high speed while being capable of horizontal feeding; 3、The cover of the present application can form a closed space by being attached to the feeding wheel and the stop block, the cutting point is cooled and washed by the spray head, the service life of the tool is prolonged, the separation of iron filings and cooling liquid is realized through the filter disc, the recycling use of the cooling liquid is facilitated, the processed valve stem is collected through the discharge chute, the working environment is kept clean, and the processing environment and operation experience are optimized; In summary, the device integrates automatic feeding, accurate positioning, efficient processing, cooling and chip removal, and finished product collection, etc. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the present application, the following will briefly introduce the drawings needed to be used in the specific implementation manner. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0018] Figure 1 The overall structure of the present application Figure One ; The overall structure of the present application Figure 2 The overall structure of the present application Figure Two ; The overall structure of the present application Figure 3 The structure of the feeding rack in the present application Figure 4 The structure of the feeding rack in the present application Figure 5 The structure of the feeding rack in the present application Figure 6 The structure of the feeding rack in the present application Figure 7 The structure of the feeding rack in the present application Figure 8 The structure of the feeding rack in the present application Figure 9 The structure of the feeding rack in the present application Figure 10 The structure of the feeding rack in the present application Figure 11 The structure of the feeding rack in the present application Figure 12 The structure of the feeding rack in the present application

[0019] In the figure: 1, column; 2, machine tool; 3, guide assembly; 4, stand; 5, sleeve tube; 6, horizontal shaft; 7, chamfering tool; 8, feeding rack; 9, steering shaft; 10, material turning wheel; 11, operation box; 21, stepped groove; 22, filter disc; 23, drain pipe; 24, discharge chute; 31, guide rail; 32, horizontal sliding block; 33, translation seat; 34, linkage block; 35, transverse air cylinder; 36, liquid storage cavity; 41, holder; 42, drive motor; 43, bevel gear; 44, hydraulic rod; 45, cylindrical block; 46, cover body; 47, pipe fixing block; 51, bevel gear; 52, transverse through slot; 61, limiting strip; 81, storage seat; 82, arc plate; 83, inclined support rod; 84, fixing arm; 85, circular through hole; 86, metal ring; 87, butt joint hole; 88, guide groove; 89, valve rod; 80, baffle; 91, groove wheel; 92, stroke slot; 93, vertical seat; 94, conveying motor; 95, dial; 96, pin column; 101, receiving groove; 102, accommodating groove; 103, elastic rod; 104, steel ball; 461, let go of the mouth; 462, spray head; 463, drainage pipe; 464, liquid pump; 465, discharge hopper; 471, vertical air cylinder; 472, lifting block; 473, guide slide rod; 474, longitudinal slide block; 475, traction rod; 476, U-shaped rod; 477, clamping block; 478, V-shaped groove. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. Embodiment one

[0021] Please refer to Figures 1-12 As shown in the figure, the embodiment is a valve rod head chamfering device, which comprises a column 1 for supporting the device and providing a stable foundation for the machining process, a machine tool 2 connected to the top of the column 1, a guide assembly 3 connected to the top left side of the machine tool 2, a stand 4 connected to the top of the guide assembly 3, an outer sleeve 5 rotatably connected to the upper part of the stand 4, a horizontal shaft 6 movably inserted into the outer sleeve 5, a chamfering tool 7 connected to the right end of the horizontal shaft 6, which can chamfer the valve rod when the horizontal shaft 6 rotates, a feeding rack 8 connected to the top right side of the machine tool 2, a steering shaft 9 rotatably connected to the middle part of the feeding rack 8, a material turning wheel 10 connected to the left side of the outer wall of the steering shaft 9, and an operation box 11 connected to the outer wall of the machine tool 2.

[0022] The feeding frame 8 comprises a storage seat 81, a guide groove 88 is formed in the left end of the storage seat 81, a plurality of valve rods 89 are installed in the guide groove 88, the bottom of the storage seat 81 is symmetrically connected with arc-shaped plates 82, the outer wall of the arc-shaped plate 82 is connected with the machine tool 2 through a diagonal brace 83, which can enhance the stability of the feeding frame 8, the right end of the two arc-shaped plates 82 is jointly connected with a fixed arm 84, a circular through hole 85 is formed in the center of the fixed arm 84, the circular through hole 85 is rotatably connected with the steering shaft 9 through a bearing, the inner wall of the two arc-shaped plates 82 is jointly connected with a metal ring 86, a plurality of butt joints 87 are formed in the circumferential direction of the metal ring 86, and the rear end of the rear arc-shaped plate 82 is connected with a baffle 80.

[0023] The circumferential outer wall of the material rotating wheel 10 is circumferentially provided with four receiving grooves 101, the rear receiving groove 101 is located at the same height as the horizontal shaft 6, and the guide groove 88 is located directly above the top receiving groove 101, the right side wall of the material rotating wheel 10 is circumferentially provided with a plurality of accommodating grooves 102, the inner wall of the accommodating groove 102 is connected with an elastic rod 103, the end of the elastic rod 103 is connected with a steel ball 104, the outer wall of the steel ball 104 abuts against the butt joint 87, and the number of the accommodating grooves 102 and the butt joints 87 is the same and is a multiple of four, so that the material rotating wheel 10 can be elastically positioned.

[0024] The specific implementation of the embodiment is as follows: When the device is used, an external power supply is connected, the operation box 11 is used to set the operation parameters of each electrical component and control the operation thereof through the built-in single-chip microcomputer, the machine tool 2 is fixed and supported by the stand 1, the valve rods 89 stacked for chamfering are placed in the guide groove 88 of the storage seat 81, the bottom valve rod 89 falls into the top receiving groove 101 along the guide groove 88 under the action of gravity, the material rotating wheel 10 is controlled to deflect by the steering shaft 9, the butt joint position of the receiving groove 101 butted with the guide groove 88 is changed, and then the valve rods 89 are sent to the machining station one by one, the horizontal position of the vertical stand 4 is controlled by the guide assembly 3, and the horizontal shaft 6 is used to drive the chamfering tool 7 to rotate, so that the valve rod 89 can be chamfered and machined. Embodiment two

[0025] On the basis of the first embodiment, the right end of the steering shaft 9 is connected with a groove wheel 91, four stroke grooves 92 are formed in the circumferential direction of the outer wall of the groove wheel 91, a vertical seat 93 is connected between the bottom wall of the fixed arm 84 and the machine tool 2, a conveying motor 94 is connected to the left side wall of the vertical seat 93, a dial 95 is connected to the right side output end of the conveying motor 94, a pin column 96 is connected to the right end of the dial 95, and the pin column 96 periodically extends into the stroke groove 92. Under the drive of the conveying motor 94, the dial 95 rotates, and the pin column 96 can intermittently rotate the groove wheel 91 and the steering shaft 9.

[0026] The guide assembly 3 includes two sets of guide rails 31 fixed to the upper surface of the machine tool 2, which provide guidance for the sliding of the horizontal slider 32. The horizontal slider 32 is slidably connected in the guide rail 31. A translation seat 33 is connected between the two horizontal sliders 32. A linkage block 34 is connected to the bottom wall of the translation seat 33. A transverse cylinder 35 is connected between the linkage block 34 and the machine tool 2. The extension and retraction of the transverse cylinder 35 can drive the linkage block 34 and the translation seat 33 to move horizontally along the guide rail 31, thereby realizing the position adjustment. A liquid storage chamber 36 is opened in the translation seat 33 to store coolant and provide necessary cooling support for the processing. The lower end of the stand 4 is fixed to the upper surface of the translation seat 33.

[0027] The left end of the support frame 4 is connected to a bracket 41, and the bottom wall of the bracket 41 is connected to a drive motor 42, which can provide power for subsequent transmission. The top output end of the drive motor 42 is connected to a bevel gear 43. The left end of the bracket 41 is connected to a hydraulic rod 44, and the right end of the hydraulic rod 44 is connected to a cylindrical block 45. The cylindrical block 45 is rotatably connected to the left end of the horizontal shaft 6 through a bearing, which can realize the axial movement and rotation of the horizontal shaft 6. The right end of the support frame 4 is connected to a cover 46, and the top of the cover 46 is connected to a pipe fixing block 47.

[0028] A bevel gear ring 51 is connected to the left side of the outer wall of the outer sleeve 5. The bevel gear ring 51 meshes with the bevel gear 43. Under the drive of the drive motor 42, the bevel gear 43 can drive the bevel gear ring 51 and the outer sleeve 5 to rotate. The inner wall of the outer sleeve 5 is provided with transverse through grooves 52 on the upper and lower sides. The outer wall of the horizontal shaft 6 is connected with limit strips 61 on the upper and lower sides. The limit strips 61 are slidably connected to the transverse through grooves 52, which can restrict the axial movement of the horizontal shaft 6, while allowing it to rotate with the outer sleeve 5.

[0029] The specific implementation method of this embodiment is as follows: In this embodiment, the conveyor motor 94 drives the dial 95 to rotate, causing the pin 96 to periodically enter the stroke groove 92 of the grooved wheel 91, thereby causing the grooved wheel 91 to rotate and driving the steering shaft 9 to rotate intermittently by 90 degrees. When the pin 96 moves out of the grooved wheel 91, the material transfer wheel 10 completes one position switch. At this time, the top receiving groove 101 is aligned with the guide groove 88 to receive the material, the valve stem 89 in the rear receiving groove 101 enters the processing station, and the valve stem 89 that has been processed in the bottom receiving groove 101 falls under the action of gravity. A receiving groove 102 is provided on the right side of the transfer wheel 10. The steel ball 104 is pushed by the elastic rod 103. When the transfer wheel 10 is stationary, the steel ball 104 fits into the docking hole 87 on the metal ring 86, which can prevent the transfer wheel 10 from shaking and ensure that the receiving groove 101 is in the same position every time the transfer wheel 10 stops, which is beneficial to ensuring the machining accuracy of the valve stem 89. The horizontal slider 32 is guided by the guide rail 31, the translation seat 33 is pushed to the working position by the transverse cylinder 35, at this time, the cover body 46 is attached to the material rotating wheel 10 and the baffle 80, the driving motor 42 drives the bevel gear 43 to rotate, the bevel gear 43 meshes with the transmission bevel gear 51, the sleeve tube 5 rotates, the horizontal shaft 6 rotates synchronously with the sleeve tube 5 by the guidance of the transverse through slot 52 to the limiting strip 61, the high-speed rotating chamfering cutter 7 can cut and chamfer the head of the valve stem. Example three

[0030] On the basis of example two, the left side wall of the cover body 46 is provided with a let-out opening 461, the sleeve tube 5 penetrates through the let-out opening 461, the inner cavity of the cover body 46 is connected with a spray head 462 at the top, a drainage pipe 463 is arranged between the stand 4 and the pipeline fixing block 47, which is used to introduce the cooling liquid in the liquid storage cavity 36 into the cover body 46, the right end of the drainage pipe 463 is communicated with the spray head 462, the end of the drainage pipe 463 extending into the liquid storage cavity 36 is connected with a liquid pumping pump 464, and the lower end of the cover body 46 is communicated with a discharging hopper 465.

[0031] The top of the pipeline fixing block 47 is connected with a vertical cylinder 471, the top output end of the vertical cylinder 471 is connected with a lifting block 472, the left and right sides of the pipeline fixing block 47 are provided with guide sliding rods 473, the lower ends of the guide sliding rods 473 are fixedly connected to the upper surface of the cover body 46, two longitudinal sliding blocks 474 are movably sleeved outside the guide sliding rods 473, a traction rod 475 is hinged between the longitudinal sliding blocks 474 and the lifting block 472, a U-shaped rod 476 is connected to the outer wall of the longitudinal sliding block 474, one end of the U-shaped rod 476 extending into the cover body 46 is connected with a clamping block 477, a V-shaped groove 478 is formed in the side of the two clamping blocks 477 close to each other, and guide holes are formed in the front and back of the cover body 46 for the U-shaped rod 476 to pass through.

[0032] The machine tool 2 is arranged in an L-shaped structure, a stepped groove 21 is formed in the middle of the top of the machine tool 2, the stepped groove 21 is located below the opening of the discharging hopper 465, and is used to collect the debris and cooling liquid generated in the machining process, a filter disc 22 is detachably installed in the upper part of the inner cavity of the stepped groove 21, and is used to filter the debris, and a drain pipe 23 is communicated with the lower part of the inner cavity of the stepped groove 21, and is used to discharge the filtered cooling liquid, and a discharging chute 24 is arranged in the right part of the machine tool 2, the top opening of the discharging chute 24 is located directly below the material rotating wheel 10, and is used to discharge the machined valve stem 89.

[0033] The specific implementation of the embodiment is: In the technical solution, when the cover body 46 is attached to the material rotating wheel 10 and the stop block 80, the valve rod 89 at the machining position falls between the two clamping blocks 477, the lifting block 472 is pushed upward by the vertical cylinder 471, the angle of the traction rod 475 is changed, the two longitudinal sliding blocks 474 move towards each other along the guide sliding rod 473, the U-shaped rod 476 moves accordingly, the two clamping blocks 477 can accurately center and tightly clamp the valve rod 89 workpiece through the V-shaped groove 478, the rear receiving groove 101 is at the same height as the horizontal shaft 6, the valve rod 89 workpiece is coaxial with the horizontal shaft 6 after being clamped, and the chamfer tool 7 can accurately machine after rotating; During the machining process, the cooling liquid is pumped out from the liquid storage cavity 36 by the liquid pumping pump 464, introduced into the spray head 462 through the drainage pipe 463, and sprayed out, so that the cutting part can be cooled and washed, the cooling liquid containing iron filings falls into the stepped groove 21 through the discharge hopper 465 at the lower end of the cover body 46, the iron filings are filtered and retained by the filter disc 22, the cooling liquid flows back to the bottom of the liquid storage cavity 36, and the cooling liquid is recycled, and after the machining is completed, the cylinder and the hydraulic rod 44 are retracted, the valve rod 89 that has been machined is lowered from the bottom receiving groove 101 after the material rotating wheel 10 is deflected, and is collected below the discharge chute 24.

[0034] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0035] The preferred embodiments of the application disclosed above are only used to help explain the application. The preferred embodiments do not describe all the details and limit the application to the specific embodiments described. Obviously, many modifications and changes can be made according to the content of the present specification. The present specification selects and describes these embodiments in order to better explain the principles and practical applications of the application, so that those skilled in the art can well understand and utilize the application. The application is limited by the claims and their entire scope and equivalents.

Claims

1. A valve stem head chamfering apparatus comprising a column (1), characterised in that: The top of the column (1) is connected with a machine tool (2), the top left side of the machine tool (2) is connected with a guide assembly (3), the top of the guide assembly (3) is connected with a stand (4), the upper part of the stand (4) is rotatably connected with an outer sleeve (5), the outer sleeve (5) movably inserts a horizontal shaft (6), the right end of the horizontal shaft (6) is connected with a chamfering tool (7), the top right side of the machine tool (2) is connected with a feeding frame (8), the middle part of the feeding frame (8) is rotatably connected with a steering shaft (9), the outer wall left side of the steering shaft (9) is connected with a material turning wheel (10), and the outer wall of the machine tool (2) is connected with an operation box (11).

2. The valve stem tip chamfering apparatus of claim 1, wherein: The feeding frame (8) comprises a storage seat (81), the left end of the storage seat (81) is provided with a guide groove (88), a plurality of valve rods (89) are installed in the guide groove (88), the bottom of the storage seat (81) is symmetrically connected with arc-shaped plates (82), the outer wall of the arc-shaped plates (82) is connected with inclined struts (83) between the machine tool (2), the right ends of the two arc-shaped plates (82) are commonly connected with a fixed arm (84), a circular through hole (85) is formed in the center of the fixed arm (84), the circular through hole (85) is rotatably connected with the steering shaft (9) through a bearing, the inner wall right sides of the two arc-shaped plates (82) are commonly connected with metal rings (86), a plurality of butt joints (87) are formed in the circumferential direction of the metal ring (86), and the rear end of the rear arc-shaped plate (82) is connected with a baffle (80).

3. The valve stem tip chamfering apparatus of claim 2, wherein: The circumferential outer wall of the material turning wheel (10) is provided with four receiving grooves (101) in the circumferential direction, the rear receiving grooves (101) are located at the same height as the horizontal shaft (6), the guide groove (88) is located directly above the top receiving groove (101), the right side wall of the material turning wheel (10) is provided with a plurality of accommodation grooves (102) in the circumferential direction, the inner wall of the accommodation groove (102) is connected with an elastic rod (103), the end of the elastic rod (103) is connected with a steel ball (104), the outer wall of the steel ball (104) abuts against the butt joint (87), and the number of the accommodation grooves (102) and the butt joints (87) is the same and is a multiple of four.

4. The valve stem tip chamfering apparatus of claim 2, wherein: The right end of the steering shaft (9) is connected with a groove wheel (91), the outer wall of the groove wheel (91) is provided with four stroke grooves (92) in the circumferential direction, the bottom wall of the fixed arm (84) and the machine tool (2) are connected with a vertical seat (93), the left side wall of the vertical seat (93) is connected with a conveying motor (94), the right side output end of the conveying motor (94) is connected with a dial (95), the right end of the dial (95) is connected with a pin column (96), and the pin column (96) periodically extends into the stroke groove (92).

5. The valve stem tip chamfering apparatus of claim 1, wherein: The guiding assembly (3) comprises two groups of guiding rails (31) fixed to the upper surface of the machine tool (2), horizontal sliding blocks (32) are slidably connected in the guiding rails (31), a translation seat (33) is connected between the two horizontal sliding blocks (32), a linkage block (34) is connected to the bottom wall of the translation seat (33), a transverse air cylinder (35) is connected between the translation seat (33) and the machine tool (2), a liquid storage cavity (36) is formed in the translation seat (33), and the lower end of the stand (4) is fixed to the upper surface of the translation seat (33).

6. The valve stem tip chamfering apparatus of claim 1, wherein: The left end of the stand (4) is connected with a support base (41), the bottom wall of the support base (41) is connected with a driving motor (42), the top output end of the driving motor (42) is connected with a bevel gear (43), the left end of the support base (41) is connected with a hydraulic rod (44), the right end of the hydraulic rod (44) is connected with a cylindrical block (45), the cylindrical block (45) is rotatably connected with the left end of the horizontal shaft (6) through a bearing, the right end of the stand (4) is connected with a cover body (46), and the top of the cover body (46) is connected with a pipeline fixing block (47).

7. A valve stem tip chamfering apparatus as defined in claim 6, wherein: The outer wall left side of the outer sleeve (5) is connected with a gear ring (51), the gear ring (51) is meshed with the bevel gear (43), and horizontal through grooves (52) are formed in the inner wall of the outer sleeve (5) in a left-right direction. The outer wall of the horizontal shaft (6) is connected with a limiting strip (61) in an up-down direction, and the limiting strip (61) is slidably connected with the horizontal through grooves (52).

8. The valve stem tip chamfering apparatus of claim 6, wherein: The left side wall of the cover body (46) is provided with a gap (461), the outer sleeve (5) penetrates the gap (461), the inner cavity of the cover body (46) is connected with a spray head (462), a drainage pipe (463) is arranged between the stand (4) and the pipeline fixing block (47), the right end of the drainage pipe (463) is communicated with the spray head (462), one end of the drainage pipe (463) extending into the liquid storage cavity (36) is connected with a liquid pumping pump (464), and the lower end of the cover body (46) is communicated with a discharge hopper (465).

9. The valve stem tip chamfering apparatus of claim 6, wherein: The top of the pipeline fixing block (47) is connected with a vertical air cylinder (471), the top output end of the vertical air cylinder (471) is connected with a lifting block (472), guide sliding rods (473) are arranged on the left and right sides of the pipeline fixing block (47), the upper surfaces of the cover bodies (46) are fixed to the lower ends of the guide sliding rods (473), two longitudinal sliding blocks (474) are movably sleeved on the outer portions of the guide sliding rods (473), a traction rod (475) is hinged between the longitudinal sliding blocks (474) and the lifting block (472), U-shaped rods (476) are connected to the outer walls of the longitudinal sliding blocks (474), one end of each U-shaped rod (476) extending into the cover body (46) is connected with a clamping block (477), V-shaped grooves (478) are formed in the sides of the two clamping blocks (477) close to each other, and guide holes through which the U-shaped rods (476) pass are formed in the front and back of the cover body (46).

10. The valve stem tip chamfering apparatus of claim 8, wherein: The machine tool (2) is provided in an L-shaped structure, a stepped groove (21) is arranged in the middle section of the top of the machine tool (2), the stepped groove (21) is located below the opening of the discharge hopper (465), a filter disc (22) is detachably installed on the upper part of the inner cavity of the stepped groove (21), a drain pipe (23) is communicated with the lower part of the inner cavity of the stepped groove (21), a discharge chute (24) is arranged on the right part of the machine tool (2), and the top opening of the discharge chute (24) is located directly below the material rotating wheel (10).

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