Multi-station cooperative valve core machining machine tool

Abstract

The present application relates to the technical field of valve core processing, and discloses a multi-station coordinated valve core processing machine tool, which comprises a processing table, a first spindle box fixedly arranged on one side of the processing table and used for driving a bar to rotate, a cutter assembly arranged on the top of the processing table and located on the outer side of the first spindle box, which is used for turning the bar in the rotating state by using the feeding movement in the X-axis and Y-axis directions to form a valve core blank, a second spindle box fixedly arranged on one side of the processing table, an output end of the second spindle box being fixedly provided with a hole turning cutter and used for processing a center hole of the valve core blank, and a turntable arranged on the top of the processing table and driven to rotate by external force, the top of the turntable being fixedly provided with a plurality of supports in a circumferential array. The multi-station coordinated valve core processing machine tool can effectively solve the problem of low processing efficiency caused by repeated transfer and feeding during the valve core processing in the prior art.

Description

Technical Field

[0001] This invention relates to the field of valve core processing technology, and more specifically to a multi-station collaborative valve core processing machine tool. Background Technology

[0002] In the field of hydraulic fluid control, the rotary ball valve core, as a core control component, directly determines the valve's sealing performance and service life through its machining accuracy (such as coaxiality, cylindricity, and surface finish). Currently, the machining process for valve cores typically includes rough turning of cylindrical steel blanks, cutting, machining of media channels, and finish turning. With the improvement of industrial automation, traditional single-spindle, manual loading and unloading ordinary CNC lathes can no longer meet the demands of high-efficiency, high-consistency mass production. Therefore, dedicated CNC lathes with automated loading and unloading functions are gradually becoming the mainstream.

[0003] In related technologies, in order to solve the problem of axial displacement that is easy to occur during valve core processing, for example, the prior art patent with publication number CN120790969A provides a valve core processing machine tool. This device is fixed by a tensioning chuck inserted into the internal medium channel of the valve core, and additionally a stop part (including a fixed curved plate, insert rod, inclined guide groove, extrusion elastic element and other linkage mechanism) is set to dynamically restrict the axial movement of the valve core when the tool is fed.

[0004] Although the existing technical solutions mentioned above can prevent the valve core from shifting axially during processing by setting a tensioning chuck and a stop for dynamic limiting, their core relies on internal tensioning clamping. This means that the machine tool can only process valve cores with pre-drilled through holes and cannot process solid bar stock or blind hole valve cores. This requires the blank to have valve holes pre-machined and then be transferred to another machine tool for processing. The transfer and loading operations during valve core processing are quite troublesome, and the tool needs to be re-set after each loading, which reduces the processing efficiency of the valve core. Summary of the Invention

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a multi-station collaborative valve core processing machine tool, which can effectively solve the problem of reduced processing efficiency caused by repeated transfer and loading during valve core processing in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a multi-station collaborative valve core processing machine tool, comprising: Processing table; The first spindle box is fixedly mounted on one side of the processing table and is used to drive the bar stock to rotate. The tool assembly is located on the top of the machining table and outside the first spindle box. It uses the feed motion in the X and Y directions to turn the rotating bar stock to form a valve core blank. The second spindle box is fixedly installed on one side of the machining table. A turning tool is fixedly installed at the output end of the second spindle box for machining the center hole of the valve core blank. A turntable is rotatably mounted on the top of the processing table, and several supports are evenly distributed and fixed on the top of the turntable; The clamps are set one-to-one with the supports and can slide radially along the top of the supports to clamp the valve core blanks and transfer them between different work stations.

[0007] Furthermore, a guide rail is fixedly installed at the top of the support, and the guide rail is arranged radially along the turntable; A carrier plate is provided on the side of the support away from the first spindle box, and a second push rod is provided on one side of the carrier plate. The drive end of the second push rod is connected to a mounting base. A sliding sleeve is slidably mounted on the top of the guide rail, and a mounting base is located on the top of the sliding sleeve; a clamp is connected to the outside of the mounting base.

[0008] Furthermore, the clamp includes: The support plate is detachably mounted on one side of the mounting base; The limiting ring is rotatably mounted on one side of the support plate; There are two clamping plates, which are arranged opposite each other on both sides of the support plate; Guide posts are located on the side of the clamping plates that are far apart from each other; The connecting rod is located on the side of the guide post away from the clamping plate. The connecting rod is driven to push the two clamping plates closer to each other. The L-shaped skateboard is slidably mounted on the outside of the guide post, and preload wheels are mounted at both ends of the L-shaped skateboard via a wheel frame. The elastic element is located on the outside of the guide post, between the connecting rod and the L-shaped slide plate.

[0009] Furthermore, the clamp also includes: The guide rod is connected to one side of the support plate, and both connecting rods are slidably set on the outside of the guide rod; A guide sleeve is provided on the side of the support plate away from the guide rod, and a slider is provided on one side of the clamping plate corresponding to the guide sleeve; The mounting base has a fourth push rod on its outer side. The drive end of the fourth push rod is connected to a clamping arm. The clamping arm is slidably disposed relative to the mounting base, and a connecting rod is detachably disposed on one side of the clamping arm.

[0010] Furthermore, a plug is fixedly provided on one side of the connecting rod; The top of the clamping arm has a slot corresponding to the insertion block.

[0011] Furthermore, positioning holes are provided on the outer side of the support plate; A third push rod is provided on the inner side of the mounting base corresponding to the positioning hole, and a positioning block is provided on the driving end of the third push rod.

[0012] Furthermore, a bearing block is fixedly installed on the side of the mounting base near the support plate, and a horizontal limiting block is installed on the top of the bearing block. A groove is opened on the inner side of the horizontal limiting block corresponding to the guide rod.

[0013] Furthermore, it also includes a machining assembly disposed on the side of the second spindle box away from the first spindle box; the machining assembly includes: A fixed base is fixedly installed on one side of the processing table; and a support plate is provided on the top of the fixed base; A sliding column, which slides vertically through the load-bearing plate; The actuator is located at the bottom of the slide column, and the drive end of the actuator is equipped with a cutting tool for machining the valve stem mounting hole perpendicular to the center hole of the valve core blank.

[0014] Furthermore, a sixth push rod is provided on the inner side of the fixed base, and a clamping block is rotatably provided on the driving end of the sixth push rod, and the clamping block is arranged opposite to the limiting ring.

[0015] Furthermore, it also includes a material unloading platform, which is located outside the processing table; The inner side of the unloading platform is equipped with a V-shaped guide chute, and the bottom of the V-shaped guide chute is equipped with a support through a lifting device. The V-shaped guide groove is inclined upward at one end near the valve core blank.

[0016] The technical solution provided by this invention has the following advantages compared with the prior art: This invention processes bar stock into valve core blanks by setting up a first spindle box, and receives the valve core blanks by setting up a fixture. The fixture, driven by the turntable, transfers the valve core blanks to the processing position of the second spindle box. Two or more workstations can coordinate processing without repeated loading and unloading, thus improving the processing efficiency of valve cores.

[0017] This invention drives the mounting base through the second push rod to move the sliding sleeve along the guide rail, and in conjunction with the fourth push rod to drive the clamping arm to push the clamping plate close to the valve core blank, so that the four pre-tightening wheels symmetrically press the outer side of the valve core blank, preventing the workpiece from deflecting when the material is cut off, ensuring that defects on the cut surface can be eliminated through subsequent machining of the center hole, and improving machining stability. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0019] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the present invention; Figure 2 This is a side view of the structure of an embodiment of the present invention; Figure 3 This is a rear view structural schematic diagram of an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the top of the processing table in an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the bottom of the processing table in an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the top of the turntable in an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of the bottom of the turntable in an embodiment of the present invention; Figure 8 This is a schematic diagram of the assembly structure of the turntable and the fixture according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the support structure according to an embodiment of the present invention; Figure 10 This is a schematic diagram of the structure of the mounting base according to an embodiment of the present invention; Figure 11 This is a three-dimensional structural diagram of the fixture according to an embodiment of the present invention; Figure 12 This is an exploded structural diagram of the fixture according to an embodiment of the present invention.

[0020] The labels in the diagram represent: 100, bar stock; 200, valve core blank; 1. Machining table; 11. Support legs; 12. Base plate; 13. Chip discharge port; 14. Chip discharge plate; 15. Side plate; 16. Support cylinder; 2. First spindle box; 21. Clamping chuck; 3. Tool assembly; 4. Second spindle box; 41. Power head; 42. Turning tool; 5. Turntable; 51. Support; 52. Guide rail; 53. Carrier plate; 54. Second push rod; 55. Sliding sleeve; 56. Mounting base; 561. Bearing block; 562. Horizontal limit block; 563. Groove; 564. Third push rod; 565. Positioning block; 57. Connecting plate; 58. Arm plate; 59. Fourth push rod; 510. Clamping arm; 511. Sliding rod; 512. Slot; 513. Center column; 514. Power gear; 515. Rotary joint; 516. Rotary sealing ring; 517. Fixed joint; 518. Fixed plate; 519. Flange; 6. Fixture; 61. Support plate; 62. Bearing hole; 63. Limiting ring; 631. First arc surface; 64. Clamping plate; 641. Second arc surface; 65. Guide post; 66. Connecting rod; 67. L-shaped sliding plate; 68. Wheel frame; 69. Preload wheel; 610. Elastic element; 611. Fixing block; 612. Guide rod; 613. Slider; 614. Guide sleeve; 615. Positioning hole; 616. Insert block; 7. Machining components; 71. Fixing base; 72. Support plate; 73. Sliding column; 74. Driver; 75. Support plate; 76. Fifth push rod; 77. Sixth push rod; 78. Tightening block; 8. Unloading platform; 81. V-shaped guide chute; 82. Support frame; 83. Lifting component. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0022] The present invention will be further described below with reference to embodiments.

[0023] This invention provides a technical solution: a multi-station collaborative valve core processing machine tool, such as... Figure 1 and Figure 2As shown, the assembly includes a machining table 1, a first spindle box 2, a tool assembly 3, a second spindle box 4, a turntable 5, and a fixture 6. The first spindle box 2 is fixedly mounted on one side of the machining table 1. A chuck 21 for concentrically holding the bar stock 100 is fixedly mounted on the drive end of the first spindle box 2 to drive the bar stock 100 to rotate. The tool assembly 3 is mounted on the top of the machining table 1 and located outside the first spindle box 2. The tool assembly 3 can perform turning operations on the rotating bar stock 100 using feed motions in the X and Y axes (this is prior art and will not be described in detail here) to form a valve core blank. Material 200; The second spindle box 4 is fixedly installed on one side of the machining table 1. The output end of the second spindle box 4 is fixedly installed with a turning tool 42 through the power head 41 for machining the center hole of the valve core blank 200; The turntable 5 is driven by external force to rotate and is installed on the top of the machining table 1. The top of the turntable 5 is evenly distributed and fixedly installed with supports 51; The clamp 6 is installed in a one-to-one correspondence with the supports 51, and the clamp 6 is driven by external force to slide along the radial direction of the turntable 5 and is installed on the top of the supports 51 for clamping the valve core blank 200 and transferring it from the machining position of the first spindle box 2 to the machining position of the second spindle box 4.

[0024] During processing, the bar stock 100 is clamped and fixed by the clamping chuck 21, and the first spindle box 2 drives the clamping chuck 21 and the bar stock 100 to rotate synchronously. At this time, the tool assembly 3 on the outside of the first spindle box 2 uses the feed motion in the X and Y directions to perform external turning on the bar stock 100, so that the bar stock 100 gradually forms the valve core blank 200. It should be noted that when turning the external diameter, the cut surface of the valve core blank 200 and the side opposite to the cut surface can be a plane. The range of this plane is smaller than the inner diameter of the center hole to be processed later, and the cut surface can be removed by processing the center hole later. When the bar stock 100 is about to be cut, the drive clamp 6 moves radially along the turntable 5 on the top of the support 51, causing the clamp 6 to move along the axis of the clamping chuck 21. Finally, the clamp 6 concentrically clamps the valve core blank 200. After the bar stock 100 is cut, the formed valve core blank 200 can be received immediately. When the clamp 6 clamps and receives the valve core blank 200, it keeps the valve core blank 200 coaxially aligned with the clamping chuck 21. Then, the turntable 5 drives the clamp 6 on the top of the support 51 to rotate to the processing position of the second spindle box 4, so that the second spindle box 4 drives the power head 41 to connect. The turning tool 42 rotates and moves along the support 51 with the fixture 6, so that the fixture 6 moves the valve core blank 200 closer to the turning tool 42, so that the cut surface of the valve core blank 200 is facing the machining position of the turning tool 42. After the turning tool 42 completes the machining of the center hole of the valve core blank 200, the defects at the cut surface of the valve core blank 200 can be completely removed to ensure the machining quality of the valve core blank 200. Moreover, there is no need to repeatedly load and unload the material during the machining process. At the same time, it can automatically align the valve core blank 200 with the turning tool 42 for machining, which improves the machining efficiency of the valve core.

[0025] like Figure 1 , Figure 6 , Figure 8 and Figure 9 As shown, in order to enable the clamp 6 to move radially along the turntable 5, a guide rail 52 is fixedly installed on the top of the support 51 along the radial direction of the turntable 5. A carrier plate 53 is fixedly installed on the side of the support 51 away from the first spindle box 2. A second push rod 54 is fixedly installed on the inner side of the carrier plate 53. A mounting seat 56 is fixedly installed on the driving end of the second push rod 54. A sliding sleeve 55 is slidably installed on the top of the guide rail 52. The mounting seat 56 is fixedly installed on the top of the sliding sleeve 55. The clamp 6 is located on the side of the mounting seat 56 away from the second push rod.

[0026] The second push rod 54 drives the mounting base 56 to move, causing the mounting base 56 to drive the bottom sliding sleeve 55 to slide along the guide rail 52. The guide rail 52 is set along the radial direction of the turntable 5, which in turn causes the sliding sleeve 55 to drive the mounting base 56 and the clamp 6 on its outer side to move synchronously along the radial direction of the turntable 5. After the turntable 5 rotates at a certain angle, it can drive the clamp 6 to automatically align with the processing position of the first spindle box 2 and the second spindle box 4.

[0027] To ensure that the clamp 6 maintains the coaxiality of the cut surface with the clamp chuck 21 when receiving the valve core blank 200, such as Figure 11 and Figure 12 The clamp 6 includes a support plate 61 detachably mounted on the outside of the mounting base 56. A bearing hole 62 is coaxially formed on the inner side of the support plate 61 with the valve core blank 200. A limit ring 63 is rotatably mounted inside the bearing hole 62. A first arc surface 631 is correspondingly formed on the side of the limit ring 63 closest to the valve core blank 200. Clamping plates 64 are symmetrically arranged on both sides of the support plate 61. A second arc surface 641 is correspondingly formed on the side of the clamping plate 64 closest to the valve core blank 200. Both the first arc surface 631 and the second arc surface 641 are coaxially mounted on the outer side of the valve core blank 200. The clamping plates 64 are symmetrically fixed with guide posts 65 on the opposite sides. The other end of each guide post 65 is fixed with a connecting rod 66. The connecting rod 66 is driven by an external force to push the clamping plates 64 toward the valve core blank 200 and clamp them. An L-shaped slide plate 67 is slidably arranged on the outside of each guide post 65. A wheel frame 68 is fixedly arranged at one end of the L-shaped slide plate 67. Preload wheels 69 are rotatably arranged at both the upper and lower ends of the wheel frame 68. An elastic element 610 is arranged on the outside of the guide post 65 between the connecting rod 66 and the L-shaped slide plate 67.

[0028] When the bar stock 100 is about to be cut, the mounting base 56 drives the support plate 61 to move closer to the outside of the formed valve core blank 200, so that the limiting ring 63 on the inner side of the bearing hole 62 fits against the surface of the valve core blank 200 through the inner first arc surface 631. Then, the two connecting rods 66 are driven to move closer to each other, so that the connecting rods 66 push the clamping plate 64 to move closer to both sides of the valve core blank 200. During the process of moving closer, the pre-tightening wheel 69 located on the outside of the clamping plate 64 first contacts the outside of the valve core blank 200. As the clamping plate 64 continues to move closer, under the action of the elastic element 610, the pre-tightening wheel 69 is pressed against the outside of the valve core blank 200. At this time, the four pre-tightening wheels 69 are symmetrically distributed on the outside of the valve core blank 200 and located on the cross-section of the valve core blank 200 near the first spindle box 2, so that the pre-tightening wheel 69 presses the valve core blank 200 and the limiting ring 63 against each other. Subsequently, driven by the first spindle box 2, the valve core blank 200 continues to rotate to cut the material. At this time, the valve core blank 200 can drive the preload wheel 69 and the limit ring 63 to rotate. While ensuring that the valve core blank 200 can rotate to cut the material, it can also prevent the valve core blank 200 from deflecting after cutting the material. The defects caused by the cut surface can be eliminated by machining the center hole. After cutting the material, the connecting rod 66 continues to drive the clamping plate 64 to move closer to the outside of the valve core blank 200 until it is clamped, so as to ensure the stability of the valve core blank 200 in the subsequent processing.

[0029] To achieve the driving function of connecting rod 66, again as Figure 11 and Figure 12 As shown, a guide rod 612 is fixedly mounted on the outer side of the support plate 61 by a fixing block 611. Two connecting rods 66 are slidably mounted at both ends of the guide rod 612. Guide sleeves 614 are symmetrically arranged on the side of the support plate 61 near the valve core blank 200. Slider blocks 613 are fixedly mounted on the outer side of each clamping plate 64 corresponding to the guide sleeves 614, and the sliders 613 are slidably mounted in the corresponding guide sleeves 614. Figure 8 and Figure 9 As shown, the mounting base 56 is fixedly connected to the sliding sleeve 55 via the connecting plate 57. An arm plate 58 is fixedly installed on the outer side of the connecting plate 57. A fourth push rod 59 is fixedly installed on the inner side of the lower end of the arm plate 58. A clamping arm 510 is fixedly installed at the driving end of the fourth push rod 59. The clamping arm 510 is slidably installed on the outer side of the slide rod 511. The slide rod 511 is fixedly installed between the sliding sleeve 55 and the arm plate 58. The clamping arm 510 is detachably connected to the connecting rod 66.

[0030] When the drive clamping plate 64 picks up and puts in the valve core blank 200, the fourth push rod 59 drives the clamping arm 510 to slide along the slide rod 511, so that the clamping arm 510 drives the top connecting rod 66 to move synchronously, and then the connecting rod 66 slides along the guide rod 612. When the connecting rod 66 pushes the clamping plate 64 to move through the guide post 65, the clamping plate 64 slides with the guide sleeve 614 through the outer slider 613, ensuring the stability and accuracy of the clamping plate 64.

[0031] To accommodate the machining of valve cores of different specifications, such as Figure 10 and Figure 11 As shown, a positioning hole 615 is provided on the outer side of the support plate 61, and the inner side of the positioning hole 615 is a conical surface. Insert blocks 616 are fixedly provided at the bottom of the connecting rods 66. A bearing block 561 is fixedly provided on the side of the mounting base 56 near the support plate 61. A horizontal limiting block 562 is fixedly provided on the top of the bearing block 561. A groove 563 is provided on the inner side of the horizontal limiting block 562 corresponding to the guide rod 612. A third push rod 564 is symmetrically fixedly provided on the inner side of the mounting base 56. A positioning block 565 is fixedly provided on the driving end of the third push rod 564 corresponding to the positioning hole 615. A slot 512 is provided on the top of the clamping arm 510 corresponding to the insert block 616.

[0032] When replacing the clamp 6, the guide rod 612 on the outside of the support plate 61 is hung in the groove 563 on the inside of the horizontal limiting block 562. At the same time, the insert 616 at the bottom of the connecting rod 66 is inserted into the slot 512. Then, the positioning block 565 is driven to move closer to the support plate 61 by the third push rod 564. Finally, the two positioning blocks 565 are inserted into the corresponding positioning holes 615 at the same time, so that the two positioning blocks 565 apply a pushing force to the support plate 61 based on the positioning by the conical surface, so that the guide rod 612 and the horizontal limiting block 562 are pulled together, and a stable installation structure is formed by pushing and pulling.

[0033] Based on the above embodiments, in actual processing, it is also necessary to process the valve stem mounting hole of the valve core and the mounting structure of the valve core base to facilitate subsequent installation of the valve stem and valve core base; therefore, as Figure 3 and Figure 4 As shown in the embodiment of this application, the multi-station collaborative valve core processing machine tool also includes a processing component 7. The processing component 7 is disposed on the outside of the processing table 1 and is located on the side of the second spindle box 4 away from the first spindle box 2. The processing component 7 includes a fixed seat 71 fixedly disposed on the outside of the processing table 1. A support plate 72 is fixedly disposed on the top of the fixed seat 71. A sliding column 73 is vertically slidably disposed on the inner side of the support plate 72 driven by external force. An actuator 74 is fixedly disposed on the bottom of the sliding column 73. A cutting tool is disposed on the driving end of the actuator 74 for processing the valve stem mounting hole perpendicular to the center hole of the valve core blank 200.

[0034] After the fixture 6 drives the valve core blank 200 through the second spindle box 4 to complete the center hole machining, the valve core blank 200 is transferred to the machining position of the machining assembly 7 under the drive of the turntable 5. Under the drive of the mounting base 56, the center hole of the valve core blank 200 is aligned coaxially with the tool at the bottom of the driver 74. Then, the slide column 73 on the inner side of the bearing plate 72 is driven vertically downward by external force, so that the tool can machine the valve stem mounting hole of the valve core blank 200. After the machining is completed, the slide column 73 drives the tool to reset.

[0035] When machining the top hole structure of the valve core blank 200, in order to adapt to different machining requirements, several sliding columns 73 are slidably arranged on the inner side of the support plate 72. The sliding columns 73 at the bottom of the support plate 72 are connected to different types of cutting tools through the driver 74, and the axes of the cutting tools are all aligned with the vertical plane corresponding to the axis of the valve core blank 200. A support plate 75 is fixedly arranged on the top of the support plate 72, and a fifth push rod 76 for driving the sliding columns 73 is fixedly arranged on the top of the support plate 75.

[0036] After the mounting base 56 drives the fixture 6 and the valve core blank 200 it holds to be coaxially aligned with one of the cutting tools and the machining is completed, the mounting base 56 can continue to drive the fixture 6 to move, so that the fixture 6 drives the valve core blank 200 to be located under cutting tools of different specifications, so that cutting tools of various specifications can perform hole machining on the valve core blank 200 as needed.

[0037] Specifically, a sixth push rod 77 is fixedly installed on the inner side of the fixed base 71. A clamping block 78 is installed at the driving end of the sixth push rod 77. The clamping block 78 is driven to rotate at the driving end of the sixth push rod 77 by external force. The clamping block 78 has a conical structure and is coaxially arranged with the limiting ring 63.

[0038] During the top processing, to ensure the vertical stability of the valve core blank 200, the sixth push rod 77 drives the clamping block 78 to approach the valve core blank 200, so that the clamping block 78 is coaxially inserted into the center hole of the valve core blank 200 and generates a certain extrusion force. The clamping effect of the fixture 6 is further enhanced. After the top processing of the valve core blank 200 is completed, the clamping plate 64 is driven away from the outside of the valve core blank 200, and then the clamping block 78 is driven to rotate, so that the valve core blank 200 drives the limiting ring 63 to rotate synchronously under the drive of the clamping block 78, so that the bottom of the valve core blank 200 rotates to the top position. Then, it is processed by the cutting tools of different specifications above, so as to process the valve stem mounting hole at the top and the valve core seat mounting structure at the bottom of the valve core blank 200.

[0039] To facilitate the cutting of the valve core blank 200 and to prevent the valve core blank 200 from being damaged by impacts, such as Figure 2 and Figure 3As shown in the embodiment of this application, the multi-station collaborative valve core processing machine tool also includes a loading table 8. The loading table 8 is fixedly disposed on the outside of the processing table 1 and located between the first spindle box 2 and the processing assembly 7. A V-shaped guide groove 81 is provided on the inner side of the loading table 8. A bracket 82 is fixedly disposed at the bottom of the V-shaped guide groove 81. A lifting component 83 for driving the bracket 82 to rise and fall is fixedly disposed inside the loading table 8 to adjust the receiving height of the V-shaped guide groove 81. The end of the V-shaped guide groove 81 near the valve core blank 200 is inclined upward, and the end of the V-shaped guide groove 81 inclined downward is connected to the conveying equipment.

[0040] After the valve core blank 200 has been processed through the first spindle box 2, the second spindle box 4, and the processing assembly 7, the turntable 5 drives the fixture 6 to move towards the processing assembly 7. When the valve core blank 200 is above the V-shaped guide groove 81, the fixture 6 releases its grip on the valve core blank 200. At this time, the valve core blank 200 falls onto the inclined guide surface of the V-shaped guide groove 81 under its own gravity. Since the end of the V-shaped guide groove 81 near the valve core blank 200 is inclined upward, the valve core blank 200 will naturally slide down along the inclined surface of the V-shaped guide groove 81. During this process, the lifting component 83 can adjust the valve core blank according to its position. The specifications, dimensions, and post-processing state of the blank 200 are determined by the drive bracket 82, which drives the V-shaped guide trough 81 to adjust its height, ensuring that the valve core blank 200 can smoothly transition to the conveying equipment. The downward-sloping end connects with the conveying equipment, preventing the valve core blank 200 from being bumped or knocked during its descent. The V-shaped structure design of the V-shaped guide trough 81 also guides and limits the valve core blank 200, preventing it from shifting or rolling during its descent, further avoiding surface scratches or structural damage. Finally, the processed valve core blank 200 is conveyed to the next process or storage area by the conveying equipment.

[0041] like Figure 5 As shown, the top of the machining table 1 is provided with a chip discharge port 13 corresponding to the machining positions of the first spindle box 2, the second spindle box 4 and the machining assembly 7. The bottom of the machining table 1 is fixedly provided with a chip discharge plate 14 corresponding to the chip discharge port 13. Side plates 15 are fixedly provided on both sides of the bottom of the machining table 1 corresponding to the chip discharge plate 14. Support legs 11 are fixedly provided at the four corners of the bottom of the machining table 1. The bottom of the support legs 11 and the side plates 15 are fixedly provided with a base plate 12.

[0042] It should be noted that, as Figure 6 and Figure 7As shown, a central column 513 is coaxially fixed inside the turntable 5. A power gear 514 is fixedly installed on the outside of the central column 513 at the bottom of the processing table 1. The power gear 514 is driven to rotate by a power device (such as a motor). Rotary joints 515 are arranged in a circular array above the turntable 5 on the outside of the central column 513 for connecting hydraulic devices (such as the second push rod 54, the fourth push rod 59, etc.) on the outside of each support 51. A rotating sealing ring 516 is rotatably installed on the outside of the central column 513 below the processing table 1. Each rotating sealing ring 516 has two independent annular oil chambers (for oil inlet and outlet, respectively). (Oil outlet), a fixed joint 517 is fixedly provided on the outer side of the rotating sealing ring 516 for each annular oil chamber, for connecting to an external hydraulic system (such as an oil tank, oil pump, etc.); so that when the above-mentioned push rod components use hydraulic equipment, when the turntable 5 drives the hydraulic equipment at the top to rotate continuously, the external hydraulic control system always maintains contact with the hydraulic equipment; a fixed plate 518 is fixedly provided on the outer side of the rotating sealing ring 516, and the fixed plate 518 is fixedly connected to the bottom plate 12 through the bottom flange 519. A support cylinder 16 is fixedly provided on the top of the bottom plate 12, and the support cylinder 16 is located outside the power gear 514 and the fixed plate 518.

[0043] In the above technical solutions, each push rod component is a power component with linear output function. During implementation, power components such as electric push rods, hydraulic equipment, pneumatic push rods, or linear molds that meet the requirements can be selected according to actual needs. The elastic component 610 in the above technical solutions is a component with compression and rebound performance. During implementation, silicone components, rubber components, or spring components can be selected according to actual needs. In the specific example of this application, a spring component with good compression and rebound performance is selected. The driver 74 in the above technical solutions is a device that drives the corresponding tool to rotate to process the valve stem mounting hole. During implementation, a drive motor or other suitable device can be selected according to actual needs. The lifting component 83 is a power component that can drive the bracket 82 to move vertically. During implementation, power components such as electric push rods, hydraulic equipment, pneumatic push rods, or linear molds that meet the requirements can be selected according to actual needs.

[0044] In summary, the multi-station collaborative valve core processing machine tool described in the embodiments of this application, during use: First, the bar stock 100 is clamped and fixed by the clamping chuck 21, and the first spindle box 2 drives the clamping chuck 21 and the bar stock 100 to rotate synchronously. At this time, the tool assembly 3 on the outside of the first spindle box 2 performs external turning on the bar stock 100 by means of the feed motion in the X and Y directions, so that the bar stock 100 gradually forms the valve core blank 200.

[0045] When the bar stock 100 is ready to be cut, the second push rod 54 drives the mounting base 56 to move, causing the mounting base 56 to drive the bottom sliding sleeve 55 to slide along the guide rail 52. Since the guide rail 52 is arranged radially along the turntable 5, the sliding sleeve 55 drives the mounting base 56 and its outer support plate 61 to move synchronously along the radial direction of the turntable 5, so that the limiting ring 63 inside the bearing hole 62 fits against the surface of the valve core blank 200 through the inner first arc surface 631.

[0046] Then, the clamping arm 510 is driven to slide along the slide rod 511 by the fourth push rod 59, causing the clamping arm 510 to move synchronously with the connecting rod 66 at the top, so that the connecting rod 66 pushes the clamping plate 64 closer to both sides of the valve core blank 200. During the approach process, the preload wheel 69 located on the outside of the clamping plate 64 first contacts the surface of the valve core blank 200, and as the clamping plate 64 continues to approach, the preload wheel 69 is pressed against the outside of the valve core blank 200 by the elastic member 610. At this time, the four preload wheels 69 are symmetrically distributed on the outside of the valve core blank 200 and located on the cross-section of the valve core blank 200 near the first spindle box 2, so that the preload wheels 69 press the valve core blank 200 and the limiting ring 63 together.

[0047] Subsequently, driven by the first spindle box 2, the valve core blank 200 continues to rotate for material cutting. At this time, the valve core blank 200 can drive the preload wheel 69 and the limit ring 63 to rotate. While ensuring that the valve core blank 200 can rotate for material cutting, it also prevents the valve core blank 200 from deflecting after material cutting, so that defects caused by the cutting surface can be eliminated by machining the center hole. After material cutting, the connecting rod 66 continues to drive the clamping plate 64 to move closer to the outside of the valve core blank 200 until it is clamped, so as to ensure the stability of the valve core blank 200 in subsequent processing.

[0048] Subsequently, the turntable 5 drives the fixture 6 on top of the support 51 to rotate to the machining position of the second spindle box 4, causing the second spindle box 4 to drive the turning tool 42 connected to the power head 41 to rotate. The fixture 6 moves along the support 51, bringing the valve core blank 200 closer to the turning tool 42, ensuring the cut-off point of the valve core blank 200 is directly opposite the machining position of the turning tool 42. After the turning tool 42 completes machining the center hole of the valve core blank 200, the defects at the cut-off point of the valve core blank 200 can be completely removed, ensuring the machining quality of the valve core blank 200.

[0049] After the fixture 6 drives the valve core blank 200 through the second spindle box 4 to complete the center hole machining, the valve core blank 200 is then transferred to the machining position of the machining assembly 7 under the drive of the turntable 5. Driven by the mounting base 56, the center hole of the valve core blank 200 is aligned coaxially with the tool at the bottom of the driver 74. Subsequently, the sliding column 73 on the inner side of the support plate 72 is driven vertically downward by external force, so that the tool can machine the valve stem mounting hole of the valve core blank 200.

[0050] After the mounting base 56 drives the fixture 6 and the valve core blank 200 it holds to be coaxially aligned with one of the cutting tools and the machining is completed, the mounting base 56 can continue to drive the fixture 6 to move, so that the fixture 6 drives the valve core blank 200 to be located under cutting tools of different specifications, allowing cutting tools of various specifications to perform hole machining on the valve core blank 200 as needed.

[0051] After the top of the valve core blank 200 is processed, the drive clamping plate 64 is moved away from the outside of the valve core blank 200. Then, the drive clamping block 78 is rotated, so that the valve core blank 200 drives the limiting ring 63 to rotate synchronously under the drive of the clamping block 78, so that the bottom of the valve core blank 200 rotates to the top position. Then, it is processed by the cutting tools of different specifications above, so as to process the valve stem mounting hole at the top of the valve core blank 200 and the valve core seat mounting structure at the bottom.

[0052] It is worth noting that the processing method of the multi-station collaborative valve core processing machine tool described in this application has the following advantages compared with the prior art: By setting up the first spindle box 2, the bar stock 100 is processed into valve core blank 200, and the valve core blank 200 is received by the fixture 6. The fixture 6 is driven by the turntable 5 to transfer the valve core blank 200 to the processing position of the second spindle box 4. Two or more stations can coordinate processing without repeated loading and unloading, which improves the processing efficiency of valve core.

[0053] The second push rod 54 drives the mounting base 56 to slide the sliding sleeve 55 along the guide rail 52. The fourth push rod 59 drives the clamping arm 510 to push the clamping plate 64 close to the valve core blank 200, so that the four pre-tightening wheels 69 symmetrically press the outer side of the valve core blank 200. This prevents the workpiece from deflecting when the material is cut off, and ensures that defects on the cut surface can be eliminated through subsequent machining of the center hole, thereby improving machining stability.

[0054] The valve core blank 200 is transferred to the machining position of the second spindle box 4 by the turntable 5 driving the fixture 6, so that the turning tool 42 can perform center hole machining on the valve core blank 200. The defects at the cut-off point are completely removed, ensuring the machining accuracy of the key parts of the valve core and improving the product qualification rate.

[0055] The mounting base 56 drives the clamp 6 to move the valve core blank 200 to the bottom of different sized cutting tools, and completes the machining of various valve stem mounting holes as needed, adapting to diversified production needs and enhancing the processing flexibility of the equipment.

[0056] By driving the clamping block 78 to rotate, the bottom of the valve core blank 200 is rotated to the top position, realizing bidirectional processing of the workpiece, meeting the multi-directional processing requirements of valve core seat installation structure, and improving the functional integrity of the equipment.

[0057] By using 6 clamps to hold and transfer the valve core blank 200, seamless connection between different processes is achieved, avoiding positioning errors caused by transfer in traditional processing, and effectively improving the overall accuracy of valve core processing.

[0058] From material clamping and center hole machining to multi-station conversion, each step is rigidly fixed through mechanical structures, preventing workpiece deflection or displacement throughout the entire process, ensuring machining dimensional accuracy, and improving production stability.

[0059] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-station collaborative valve core processing machine tool, characterized in that, include: Processing table; The first spindle box is fixedly installed on one side of the processing table and is used to drive the bar stock to rotate. The drive end of the first spindle box is fixedly equipped with a clamping chuck for concentrically holding the bar stock. The tool assembly is located on the top of the machining table and outside the first spindle box. It uses the feed motion in the X and Y directions to turn the rotating bar stock to form a valve core blank. The second spindle box is fixedly installed on one side of the machining table. A turning tool is fixedly installed at the output end of the second spindle box for machining the center hole of the valve core blank. A turntable is rotatably mounted on the top of the processing table, and several supports are evenly distributed and fixed on the top of the turntable; The clamps are set one-to-one with the supports and can slide along the radial direction of the turntable on the top of the supports, and are used to clamp the valve core blanks and transfer them between different work stations. The support has a guide rail fixedly installed at its top, which is arranged radially along the turntable; a carrier plate is installed on the side of the support away from the first spindle box, and a second push rod is installed on one side of the carrier plate, with a mounting base connected to the driving end of the second push rod; a sliding sleeve is slidably installed on the top of the guide rail, and the mounting base is located on the top of the sliding sleeve; and a clamp is connected to the outside of the mounting base. The clamp includes: The support plate is detachably mounted on one side of the mounting base; The limiting ring is rotatably mounted on one side of the support plate; There are two clamping plates, which are arranged opposite each other on both sides of the support plate; Guide posts are located on the side of the clamping plates that are far apart from each other; The connecting rod is located on the side of the guide post away from the clamping plate. The connecting rod is driven to push the two clamping plates closer to each other. The L-shaped skateboard is slidably mounted on the outside of the guide post, and preload wheels are mounted at both ends of the L-shaped skateboard via a wheel frame. The elastic element is located on the outside of the guide post, between the connecting rod and the L-shaped slide plate.

2. The multi-station collaborative valve core processing machine tool according to claim 1, characterized in that, The clamp also includes: The guide rod is connected to one side of the support plate, and both connecting rods are slidably set on the outside of the guide rod; A guide sleeve is located on the side of the support plate away from the guide rod, and a slider is provided on one side of the clamping plate corresponding to the guide sleeve; The mounting base has a fourth push rod on its outer side. The drive end of the fourth push rod is connected to a clamping arm. The clamping arm is slidably disposed relative to the mounting base, and a connecting rod is detachably disposed on one side of the clamping arm.

3. The multi-station collaborative valve core processing machine tool according to claim 2, characterized in that, A plug is fixedly provided on one side of the connecting rod; The top of the clamping arm has a slot corresponding to the insertion block.

4. The multi-station collaborative valve core processing machine tool according to claim 1, characterized in that, Positioning holes are provided on the outer side of the support plate; A third push rod is provided on the inner side of the mounting base corresponding to the positioning hole, and a positioning block is provided on the driving end of the third push rod.

5. The multi-station collaborative valve core processing machine tool according to claim 2, characterized in that, A bearing block is fixedly installed on the side of the mounting base near the support plate. A horizontal limiting block is installed on the top of the bearing block. A groove is opened on the inner side of the horizontal limiting block corresponding to the guide rod.

6. The multi-station collaborative valve core processing machine tool according to claim 1, characterized in that, It also includes a machining assembly disposed on the side of the second spindle box away from the first spindle box; the machining assembly includes: A fixed base is fixedly installed on one side of the processing table; and a support plate is provided on the top of the fixed base; A sliding column, which slides vertically through the load-bearing plate; The actuator is located at the bottom of the slide column, and the drive end of the actuator is equipped with a cutting tool for machining the valve stem mounting hole perpendicular to the center hole of the valve core blank.

7. The multi-station collaborative valve core processing machine tool according to claim 6, characterized in that, A sixth push rod is provided on the inner side of the fixed base. A clamping block is rotatably provided on the driving end of the sixth push rod, and the clamping block is arranged opposite to the limiting ring.

8. The multi-station collaborative valve core processing machine tool according to claim 1, characterized in that, It also includes a material unloading platform, which is located outside the processing table; The inner side of the unloading platform is equipped with a V-shaped guide chute, and the bottom of the V-shaped guide chute is equipped with a support through a lifting device. The V-shaped guide groove is inclined upward at one end near the valve core blank.

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