Cast valve body milling equipment and machining method thereof

Abstract

The invention discloses casting valve body milling equipment and a machining method thereof. The equipment comprises a base, two spindles, a workbench and a carrying mechanism, the spindles are slidably connected to the base, the two spindles are sequentially and oppositely arranged along a first axis, the workbench is slidably connected to the base, the moving direction of the workbench is the first direction, the first direction is perpendicular to the first axis, and the workbench comprises a sliding seat, three bearing seats and a fixing assembly; the sliding seat is slidably connected to the base, the three bearing seats are arranged in the first direction and fixedly connected to the sliding seat, the fixing assembly comprises a first driving device and a pressing part, the first driving device is used for driving the pressing part to move to a first position and a second position, and the pressing part is located above the bearing seats and presses the valve body at the first position; and at the second position, the pressing piece avoids the bearing seats, and the carrying mechanism is used for carrying the valve body to the three bearing seats so as to machine three pairs of side faces of the valve body correspondingly. Compared with the prior art, the equipment can improve the machining efficiency and reduce the production cost.

Description

Technical Field

[0001] The invention belongs to the technical field of milling equipment, and in particular relates to a casting valve body milling equipment and a processing method using the equipment. Background Art

[0002] Cast valve bodies may have surface defects such as pores and sand holes during the casting process. Milling can remove excess surface material to eliminate these defects and improve the density and reliability of the valve body.

[0003] In order to improve processing efficiency, the existing milling machine used to process valve bodies is equipped with two main spindles to perform double-sided milling on the two opposite surfaces of the valve body. The six surfaces of the valve body are processed in an assembly line through three devices, thereby realizing the processing of the six surfaces of the valve body. Specifically, when milling the first two surfaces, according to the relative position relationship between the two surfaces to be processed and the two main spindles, the staff places the valve body on the loading mechanism according to the predetermined placement orientation; then the loading mechanism transports the valve body to the fixed jig, the fixed jig fixes the valve body, and then moves the valve body to a position relative to the main spindle for processing; after processing is completed, the fixed jig moves the valve body to the unloading station for unloading, completing the processing of the two surfaces of the valve body. The semi-finished product processed by the first device is transported to the second device and processed according to the same processing steps (placing, loading, processing, unloading) as mentioned above. The third device is also processed in the same way, and finally the processing of the six surfaces of the valve body is completed.

[0004] In the above solution, the valve body is processed in an assembly line manner. Although this provides good production continuity, if a fixture on one of the machines fails, it will cause material accumulation, affecting subsequent production and reducing production efficiency. Processing the six sides of the valve body requires three machines, which not only increases production costs but also occupies a large area. In addition, the process of placing the valve body, loading, processing, and unloading the material must be repeated for each two sides of the valve body. The processing steps are cumbersome and significantly reduce the processing efficiency of the valve body. Summary of the Invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a casting valve body milling device.

[0006] To achieve the above objectives, the present invention discloses a casting valve body milling device, comprising a base, a spindle, a worktable and a transport mechanism, wherein the spindle is slidably connected to the base, there are two spindles, and the two spindles are arranged sequentially and oppositely along a first axis, the worktable is slidably connected to the base, and the moving direction of the worktable is a first direction, which is perpendicular to the first axis:

[0007] The workbench includes a slide, three supporting seats and a fixed assembly. The slide is slidably connected to the base. The three supporting seats are arranged along the first direction and fixedly connected to the slide. The fixed assembly includes a first driving device and a pressing member. The first driving device is used to drive the pressing member to move to a first position and a second position. In the first position, the pressing member is located above the supporting seat and presses the valve body. In the second position, the pressing member avoids the supporting seat. The conveying mechanism is used to convey the valve body to the three supporting seats to process the three pairs of side surfaces of the valve body respectively.

[0008] Preferably, a first positioning assembly is provided between at least one of the bearing seats and the slide seat;

[0009] The first positioning assembly includes a second driving device and two lateral positioning structures;

[0010] The second driving device is fixedly connected to the slide seat, and the corresponding bearing seat is provided on the second driving device. The second driving device is provided with a telescopic shaft on both sides along the first direction, and the telescopic shaft is provided along the first direction;

[0011] The two lateral positioning structures are respectively fixedly connected to the two telescopic shafts;

[0012] The lateral positioning structure includes a first connecting block, a second connecting block and a positioning shaft. The first connecting block is fixedly connected to the corresponding telescopic shaft, the second connecting block is movably connected to the first connecting block up and down, and the positioning shaft is fixedly connected to the side of the second connecting block close to the supporting seat.

[0013] Preferably, a positioning bevel is provided at the end of the positioning shaft, the positioning bevel is trumpet-shaped with the trumpet mouth facing the second connecting block, and the positioning bevel is used to be clamped on the port of the internal channel of the valve body.

[0014] Preferably, the second connecting block is provided with a plurality of vertically penetrating connecting holes;

[0015] The lateral positioning structure further includes a plurality of connecting members and a plurality of springs;

[0016] Each connecting member includes a limiting portion, a guiding portion, and a connecting portion arranged in sequence, wherein the limiting portion is in limiting cooperation with the connecting hole, the guiding portion is in guiding cooperation with the inner side wall of the connecting hole, and the connecting portion is fixedly connected to the first connecting block;

[0017] The guide portion outer sleeve is provided with a spring, and two ends of the spring are respectively in abutment with the second connecting block and the first connecting block.

[0018] Preferably, the transport mechanism includes a three-dimensional moving component, a first rotating device, two second rotating devices, a visual recognition component and two clamping claws;

[0019] The three-dimensional moving assembly is provided with a first connecting seat, the first rotating device is mounted on the first connecting seat and its rotating shaft is in the same direction as the first direction, the output end of the first rotating device is provided with a second connecting seat, the two second rotating devices and the visual recognition device are both mounted on the second connecting seat, the rotating shafts of the two second rotating devices are arranged in the vertical direction, and the two clamps are respectively mounted on the two second rotating devices;

[0020] The head of the visual recognition device and the claw of the clamp face the same side.

[0021] Preferably, the three bearing seats are respectively a first bearing seat, a second bearing seat and a third bearing seat in a direction gradually away from the main shaft, the first bearing seat and the second bearing seat are both provided with the first positioning assembly, the third bearing seat is L-shaped, and includes a bearing block and a positioning block, and the positioning block is provided on a side of the bearing block close to the main shaft;

[0022] It also includes a second positioning assembly, including a bracket, a mounting plate, and a first pushing device, a second pushing device and a third pushing device installed on the mounting plate. The mounting plate is installed on the bracket, and the mounting plate is provided with a U-shaped avoidance opening. The opening of the U-shaped avoidance opening is opposite to the positioning block, and the first pushing device, the second pushing device and the third pushing device are respectively located on the inner side and both sides of the U-shaped avoidance opening.

[0023] Preferably, there are two groups of fixing components, and one fixing component is provided between two adjacent bearing seats;

[0024] The clamping member includes a connecting strip and a clamping block, the two ends of the connecting strip are respectively connected to the middle position of the clamping block and the first driving device, the width of the clamping block is smaller than the length of the valve body in the first axial direction, and the two ends of the clamping member of at least one of the fixing components respectively clamp the valve body on the two adjacent bearing seats.

[0025] Preferably, there are two groups of workbenches, and the two groups of workbenches are symmetrically arranged in the middle position of the base.

[0026] The present invention also provides a processing method using the casting valve body milling equipment.

[0027] A method for processing a casting valve body milling device, wherein the casting valve body milling device is the casting valve body milling device according to any one of claims 5 to 6;

[0028] During the processing, the valve body with all six surfaces unprocessed is called an unprocessed valve body, the valve body with two surfaces processed is called a first semi-finished product, the valve body with four surfaces processed is called a second semi-finished product, and the valve body with six surfaces processed is called a finished product. The processing method is as follows:

[0029] Step S1: placing the unprocessed valve body on the third bearing seat to obtain a first semi-finished product;

[0030] Step S2: placing the unprocessed valve body and the first semi-finished product on the third supporting seat and the second supporting seat respectively, and processing the first semi-finished product and the second semi-finished product;

[0031] Step S3: placing the unprocessed valve body, the first semi-finished product, and the second semi-finished product on the third supporting seat, the second supporting seat, and the first supporting seat, respectively, to obtain the first semi-finished product, the second semi-finished product, and the finished product;

[0032] Step S4: remove the finished product, place the second semi-finished product on the first supporting seat, then place the first semi-finished product and the unprocessed valve body on the second supporting seat and the third supporting seat in sequence, and finally remove the finished product;

[0033] Repeat step S4 until all valve bodies are processed.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] Two main spindles are set up, and three bearing seats are set on the slide. Each bearing seat is used for processing two surfaces of the valve body in one processing step. After processing two surfaces of the valve body, the valve body will be placed on the next bearing seat through the conveying mechanism. After three processing steps, the processing of six surfaces of the valve body can be completed.

[0036] By setting three bearing seats on the slide (that is, three workstations and three processes), the six surfaces of the valve body are processed. Compared with the existing technology that uses three devices for processing, only one device is needed, which reduces equipment costs and production costs, and at the same time reduces the footprint.

[0037] During the machining process, the valve bodies on three bearings can be processed simultaneously, which increases production continuity and improves production efficiency. After machining is completed, the semi-finished valve body is moved from one bearing to another, eliminating the transfer action in traditional assembly lines, shortening the production cycle and further improving production efficiency.

[0038] If any bearing seat and the corresponding valve body fixing structure fails, the transport mechanism will move the valve body to other bearing seats for processing. After processing, the product can be directly unloaded to avoid product accumulation in a certain process, which will affect subsequent production and reduce production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 Schematic diagram of the structure of the solenoid valve in the embodiment;

[0040] Figure 2 A schematic diagram of the three-dimensional structure of a casting valve body milling device according to an embodiment;

[0041] Figure 3 for Figure 2 Schematic diagram of the structure of the middle base, spindle, worktable and second positioning assembly;

[0042] Figure 4 for Figure 3 Schematic diagram of the three-dimensional structure of the middle workbench;

[0043] Figure 5 for Figure 4 A schematic diagram of the exploded structure of the middle bearing seat and the first positioning assembly;

[0044] Figure 6 for Figure 2 A schematic diagram of the three-dimensional structure of the first positioning component;

[0045] Figure 7 for Figure 1 Schematic diagram of the three-dimensional structure of the middle transport mechanism;

[0046] Figure 8 for Figure 1 A schematic diagram of the three-dimensional structure of the middle transport mechanism from another perspective;

[0047] Figure 9 for Figure 7 Schematic diagram of the structure installed at the bottom of the lifting arm;

[0048] Valve body 100; channel 110; mark 120;

[0049] Base 200;

[0050] Spindle 300;

[0051] Workbench 400; slide 410; bearing seat 420; first bearing seat 421; second bearing seat 422; third bearing seat 423; bearing block 4231; positioning block 4232; fixing assembly 430; first driving device 431; pressing member 432; connecting bar 4321; pressing block 4322; first positioning assembly 440; second driving device 441; telescopic shaft 4411; first connecting block 442; second connecting block 443; connecting hole 4431; positioning shaft 444; positioning inclined surface 4441; connecting member 445; limiting portion 4451; guide portion 4452; connecting portion 4453; spring 446;

[0052] Second positioning assembly 500; bracket 510; mounting plate 520; U-shaped avoidance opening 521; first pushing device 530; second pushing device 540; third pushing device 550;

[0053] Transport mechanism 600 ; frame 611 ; crossbeam 612 ; transverse shift seat 613 ; lifting arm 614 ; first connecting seat 6141 ; first rotating device 620 ; second connecting seat 621 ; second rotating device 630 ; visual recognition component 640 ; clamping claw 650 . DETAILED DESCRIPTION

[0054] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0055] Example 1

[0056] Before explaining this solution, this embodiment will briefly explain the structure of the solenoid valve body 100. Figure 1 As shown, the valve body is a square block with a passage 110 passing through two surfaces thereof. A mark 120 is provided on one surface of the valve body.

[0057] A milling machine for casting valve bodies, see Figure 2-Figure 9 , including a base 200, a spindle 300, a workbench 400 and a transport mechanism 600.

[0058] The spindle 300 adopts the existing milling machine spindle 300 used for processing the valve body surface, which is slidably connected to the base 200. There are two spindles 300, and the two spindles 300 are along the first axis direction ( Figure 2 The workbench 400 is slidably connected to the base 200 and can be moved along the same axis as Figure 2 The worktable 400 moves in a forward and backward direction. The worktable 400 moves in a first direction, which is perpendicular to the first axis. During machining, the worktable 400 moves to a position between the two spindles 300. The two spindles 300 move toward each other, thereby milling two opposing surfaces of the valve body on the worktable 400. After machining is completed, the two spindles 300 move away from each other, and the worktable 400 moves to its initial position.

[0059] Among them, the workbench 400 includes a slide 410, three supporting seats 420 and a fixed assembly 430. The slide 410 is slidably connected to the base 200 through a guide rail slider structure. The three supporting seats 420 are arranged at intervals along the front and rear directions and fixedly connected to the slide 410. The fixed assembly 430 includes a first driving device 431 and a clamping member 432. The first driving device 431 is used to drive the clamping member 432 to move to a first position and a second position. In the first position, the clamping member 432 is located above the supporting seat 420 and presses the valve body. In the second position, the clamping member 432 avoids the supporting seat 420. The conveying mechanism 600 is used to convey the valve body to the three supporting seats 420 to process the three pairs of side surfaces of the valve body respectively.

[0060] For the sake of convenience, a valve body whose six sides have not been processed is called an unprocessed valve body, a valve body whose two sides have been processed is called a first semi-finished product, a valve body whose four sides have been processed is called a second semi-finished product, and a valve body whose six sides have been processed is called a finished product. The three supporting seats 420 are respectively the first supporting seat 421, the second supporting seat 422 and the third supporting seat 423 in the direction gradually away from the main shaft 300. During processing, first, the unprocessed valve body is placed on the third supporting seat 423 to process the two surfaces of the valve body to obtain the first semi-finished product; second, the conveying mechanism 600 conveys the first semi-finished product to the second supporting seat 422, and at the same time places another unprocessed valve body on the third supporting seat 423. The two valve bodies are processed in turn to obtain the second semi-finished product and the first semi-finished product; third, the conveying mechanism 600 conveys the second semi-finished product to the first supporting seat 421, and conveys the first semi-finished product to the second supporting seat 422, and at the same time places another unprocessed valve body on the first supporting seat 421. The three valve bodies are processed in turn to obtain the finished product, the second semi-finished product and the first semi-finished product; fourth, the finished product is removed and the third step is repeated. Because the slide 410 has three bearing seats 420, each bearing seat only processes two specific surfaces of the valve body. After the valve body is placed on the three bearing seats and processed three times, all six surfaces of the valve body can be processed. Each valve body on the bearing seat 420 needs to be processed. Therefore, after each valve body is processed, the two spindles 300 move outward away from the slide 410, while the slide 410 moves toward the spindle 300 to position the next bearing seat 420 for processing. The two spindles 300 then move inward.

[0061] Processing the valve body with the above equipment has the following advantages:

[0062] (1) By arranging three bearing seats 420 on the slide 410 (i.e., three workstations and three processes), the six surfaces of the valve body are processed. Compared with the prior art that uses three devices for processing, only one device is needed, which reduces the equipment cost and production cost and reduces the floor space.

[0063] (2) During the processing, the valve bodies on the three support seats 420 can be processed together, which increases production continuity and improves production efficiency. After processing, the semi-finished valve body is moved from one support seat 420 to another support seat 420, eliminating the transfer action in traditional assembly lines, shortening the production cycle and further improving production efficiency.

[0064] (4) If any of the support seats 420 and the corresponding valve body fixing structure fails, the transport mechanism 600 will transport the valve body to other support seats 420 for processing. After processing, the material can be directly unloaded to avoid the accumulation of products in a certain process, which will affect subsequent production and reduce production efficiency.

[0065] In this embodiment, there are two groups of fixing assemblies 430, and one fixing assembly 430 is provided between two adjacent bearing seats 420. The structures of the two groups of fixing assemblies 430 are the same, and one group is described below. The first driving device 431 is a rotary clamping cylinder. The clamping member 432 includes a connecting strip 4321 and a clamping block 4322. The two ends of the connecting strip 4321 are respectively connected to the middle position of the clamping block 4322 and the first driving device 431. The width of the clamping block 4322 is smaller than the length of the valve body in the first axial direction so that the clamping claw 650 can clamp the valve body. The two ends of the pressing member 432 of at least one fixed assembly 430 respectively press the valve bodies on the two adjacent bearing seats 420. Specifically, one end of the pressing member 432 is located on the valve body of the first bearing member / third bearing member and can completely press the corresponding valve body, and the other end of the pressing member 432 is located on the valve body of the second bearing member and presses one side of the valve body. The valve body of the second bearing member is jointly pressed by the pressing blocks 4322 of the two fixed assemblies 430. Before processing, the rotary pressing cylinder drives the pressing member 432 to rotate downward, so that the two ends of the pressing block 4322 of the pressing member 432 respectively press the two valve bodies; after processing is completed, the rotary pressing cylinder drives the pressing member 432 to rotate upward, and the pressing block 4322 of the pressing member 432 no longer presses the valve body. At this time, the pressing blocks 4322 are arranged in the left-right direction, which will not affect the conveying mechanism 600 to grasp and convey the valve body.

[0066] It is understandable that if the valve body is non-square and its length, width and height are not equal, then the heights of the three bearing seats can be specifically set so that the valve bodies on the three bearing seats are ultimately at the same height.

[0067] In order to improve the processing accuracy and effect, it is necessary to position the valve body on each bearing seat 420. The dimensional accuracy of the cast valve body is low. If the size of the valve body deviates, it is difficult for the positioning assembly to effectively position the valve body. In this embodiment, a first positioning assembly 440 is provided between the first bearing seat 421 and the second bearing seat 422 and the slide 410. The two first positioning assemblies 440 have the same structure. Take one of them as an example: the first positioning assembly 440 includes a second drive device 441 and two lateral positioning structures. The second drive device 441 is fixedly connected to the slide 410, and the corresponding bearing seat 420 is fixed to the second drive device 441. The second drive device 441 is a cylinder, and a telescopic shaft 4411 is provided on both sides of it along the front-to-back direction. The two telescopic shafts 4411 are both arranged along the front-to-back direction. The two lateral positioning structures are respectively fixedly connected to the two telescopic shafts 4411. The two lateral positioning structures have the same structure, both including a first connecting block 442, a second connecting block 443 and a positioning shaft 444. The first connecting block 442 is fixedly connected to the corresponding telescopic shaft 4411, the second connecting block 443 is movably connected to the first connecting block 442 in an up-and-down manner, and the positioning shaft 444 is fixedly connected to the side of the second connecting block 443 close to the bearing seat 420. Under normal circumstances, the two telescopic shafts 4411 of the second driving device 441 extend outward from the corresponding two lateral positioning structures. At this time, the valve body can be placed on the first / second bearing seat 422, and the internal channel of the valve body is opposite to the positioning shaft 444. Then the two telescopic shafts 4411 retract, and the corresponding two lateral positioning structures retract inward. The positioning shaft 444 is clamped in the internal channel of the valve body, so that it can be placed on the first / second bearing seat 422.

[0068] The second connecting block 443 is movable in the up and down directions, and if there is a manufacturing deviation of the valve body, this structure can also position the valve body.

[0069] Specifically, the end of the positioning shaft 444 is provided with a positioning bevel 4441. The positioning bevel 4441 is trumpet-shaped with the trumpet mouth facing the second connecting block 443. The positioning bevel 4441 is used to be clamped to the port of the internal channel of the valve body. The second connecting block 443 is provided with four vertically extending connecting holes 4431. The lateral positioning structure also includes a plurality of connecting members 445 and a plurality of springs 446. Each connecting member 445 includes a limiting portion 4451, a guide portion 4452 and a connecting portion 4453 arranged in sequence. The limiting portion 4451 is engaged with the connecting hole 4431 in a limiting manner. For example, if the connecting hole 4431 is a countersunk hole, the limiting portion 4451 is clamped in the countersunk hole. The guide portion 4452 is guided and engaged with the inner side wall of the connecting hole 4431. If the guide portion 4452 is a shaft body, the shaft body cooperates with the inner wall of the small hole of the countersunk hole, so that the second connecting block 443 can move up and down relative to the shaft body. The connecting portion 4453 is fixedly connected to the first connecting block 442, such as by a threaded connection. The connecting member 445 is further specifically a bolt. A spring 446 is provided on the outer sleeve of each guide portion 4452, and the two ends of the spring 446 respectively abut against the second connecting block 443 and the first connecting block 442. The above positioning is achieved by the trumpet-shaped positioning bevel 4441 cooperating with the valve body's channel, which not only facilitates the insertion of the positioning shaft 444 into the valve body channel for positioning, but also facilitates the positioning of the valve body by cooperating with the second connecting block 443. In addition, the positioning bevel 4441 cooperates with the second connecting block 443 to position some valve bodies with manufacturing deviations. Specifically, when the height of the valve body is slightly smaller than the set size, when the second drive device 441 drives the lateral positioning structure to move inward, the positioning shaft 444 gradually inserts into the channel, lifting the valve body, and then the pressing member 432 rotates downward, and then the valve body is deposited downward to fix it, thereby achieving the fixation and positioning of the valve body and improving the processing quality. When machining valve bodies of different sizes, rotating connector 445 adjusts its vertical height, thereby adjusting the height of positioning shaft 444. This adapts to machining valve bodies of different sizes and provides high versatility. Spring 446 supports second connecting block 443 and also increases the rotational resistance between connecting portion 4453 and second connecting block 443, ultimately improving the reliability of the entire structural connection.

[0070] The third bearing seat 423 is L-shaped and includes a bearing block 4231 and a positioning block 4232. The positioning block 4232 is located on the side of the bearing block 4231 near the spindle 300. The equipment also includes a second positioning assembly 500, which includes a bracket 510, a mounting plate 520, and a first pushing device 530, a second pushing device 540, and a third pushing device 550 mounted on the mounting plate 520. The mounting plate 520 is mounted on the bracket 510 and is provided with a U-shaped avoidance opening 521. The opening of the U-shaped avoidance opening 521 is opposite to the positioning block 4232. When the unprocessed valve body is moved onto the bearing block 4231, the workbench 400 is first moved so that the bearing block 4231 is located within the U-shaped avoidance opening 521. The unprocessed valve body can then pass through the U-shaped avoidance opening 521 and be placed on the bearing block 4231. The first, second, and third thrusting devices 530, 540, and 550 are all telescopic cylinders, located on the inside (the bottom side of the U) and on both sides (the sides of the U) of the U-shaped relief opening 521, respectively. After the unprocessed valve body is placed on the bearing block 4231, the first thrusting device 530 pushes the valve body until it rests on the positioning block 4232. Then, the second and third thrusting devices 540, 550 push the unprocessed valve body from both sides to position it.

[0071] In the two positioning structures described above in this embodiment, the first positioning assembly 440 fully utilizes the passage provided by the valve body, resulting in a simpler, more compact, and smaller structure, and thus can be directly mounted on the slide 410. The first and second bearing seats 421, 422, provided with the first positioning assembly 440, are positioned on the side close to the spindle 300, allowing the third bearing seat 423 to be positioned on the side away from the spindle 300, which has sufficient space for the second positioning assembly 500. This prevents the second positioning assembly 500 from being positioned close to the spindle 300, which could easily interfere with the processing of the spindle 300.

[0072] The transport mechanism 600 includes a three-dimensional moving component, a first rotating device 620, two second rotating devices 630, a visual recognition component 640, and two clamping claws 650. The three-dimensional moving component refers to a component that can move in the front-back, left-right, and up-down directions. Specifically, in this embodiment, the three-dimensional moving component includes a frame 611, a crossbeam 612, a transverse displacement seat 613, and a lifting arm 614. The top of the frame 611 is provided with a first rack arranged in front and back. The crossbeam 612 is connected to the top surface of the frame 611 by a guide rail slider structure. The crossbeam 612 is provided with a first motor. The output gear of the first motor cooperates with the first rack, thereby driving the crossbeam 612 to move forward and backward. Similarly, the crossbeam 612 is provided with a second rack arranged in the left and right directions. The transverse displacement seat 613 is provided with a second motor. The output gear of the second motor cooperates with the second rack, thereby driving the transverse displacement seat 613 to move left and right. The lifting arm 614 is provided with a third rack arranged in the top and bottom directions. The transverse displacement seat 613 is provided with a third motor. The output gear of the second motor cooperates with the third rack, thereby driving the lifting arm 614 to move up and down. The lifting arm 614 is provided with a first connecting seat 6141. The first rotating device 620 is mounted on the first connecting seat 6141 with its rotating shaft arranged in the front-to-back direction. The output end of the first rotating device 620 is provided with a second connecting seat 621. Two second rotating devices 630 and a visual recognition device are both mounted on the second connecting seat 621. The rotating shafts of the two second rotating devices 630 are arranged in the vertical direction. Two clamps 650 are respectively mounted on the two second rotating devices 630. The clamps 650 use existing pneumatic clamps 650. The head of the visual recognition device and the claws of the clamps 650 face the same side. After the recognition device recognizes the valve body, the clamps 650 clamp the valve body. After the valve body on the third supporting seat is processed, the clamps clamp the valve body to the third supporting seat. The second rotating device rotates 90° (the internal channel of the valve body is arranged in the front-to-back direction so that it can be positioned by the positioning shaft), and then the valve body is transported to the second supporting seat. After the valve body on the second bearing seat is processed, the clamping claw clamps the valve body on the second bearing seat, and the first rotating device rotates 90 degrees to move the valve body to the first bearing seat.

[0073] In this embodiment, there are two groups of workbenches 400, which are symmetrically arranged in the middle of the base 200. The two groups of workbenches 400 allow one workbench 400 to process while the other workbench 400 is handling the valve body. The two workbenches 400 can work alternately and cyclically, thereby improving processing efficiency.

[0074] Example 2

[0075] A method for processing a casting valve body milling device comprises the following steps:

[0076] Step S1: placing the unprocessed valve body on the third supporting seat 423 to obtain a first semi-finished product;

[0077] Step S2: placing the unprocessed valve body and the first semi-finished product on the third supporting seat 423 and the second supporting seat 422 respectively, and processing them into the first semi-finished product and the second semi-finished product;

[0078] Step S3: placing the unprocessed valve body, the first semi-finished product, and the second semi-finished product on the third supporting seat 423, the second supporting seat 422, and the first supporting seat 421, respectively, to obtain the first semi-finished product, the second semi-finished product, and the finished product;

[0079] Step S4: Remove the finished product and place the second semi-finished product on the first supporting seat 421. Then, place the first semi-finished product and the unprocessed valve body on the second supporting seat 422 and the third supporting seat 423 in sequence. Finally, remove the finished product.

[0080] Step S5: Repeat step S4 until the processing is completed.

[0081] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A cast valve body milling device, comprising a base, a spindle, a worktable, and a transport mechanism, wherein the spindle is slidably connected to the base, there are two spindles, and the two spindles are arranged sequentially and oppositely along a first axis, the worktable is slidably connected to the base, and the movement direction of the worktable is a first direction, which is perpendicular to the first axis, and is characterized by: The workbench includes a slide, three supporting seats and a fixed assembly. The slide is slidably connected to the base. The three supporting seats are arranged along the first direction and fixedly connected to the slide. The fixed assembly includes a first driving device and a pressing member. The first driving device is used to drive the pressing member to move to a first position and a second position. In the first position, the pressing member is located above the supporting seat and presses the valve body. In the second position, the pressing member avoids the supporting seat. The conveying mechanism is used to convey the valve body to the three supporting seats to process the three pairs of side surfaces of the valve body respectively.

2. The casting valve body milling equipment according to claim 1, characterized in that: A first positioning assembly is provided between at least one of the bearing seats and the slide seat; The first positioning assembly includes a second driving device and two lateral positioning structures; The second driving device is fixedly connected to the slide seat, and the corresponding bearing seat is provided on the second driving device. The second driving device is provided with a telescopic shaft on both sides along the first direction, and the telescopic shaft is provided along the first direction; The two lateral positioning structures are respectively fixedly connected to the two telescopic shafts; The lateral positioning structure includes a first connecting block, a second connecting block and a positioning shaft. The first connecting block is fixedly connected to the corresponding telescopic shaft, the second connecting block is movably connected to the first connecting block up and down, and the positioning shaft is fixedly connected to the side of the second connecting block close to the supporting seat.

3. The milling equipment for a cast valve body according to claim 2, characterized in that: The end of the positioning shaft is provided with a positioning inclined surface, the positioning inclined surface is trumpet-shaped with the trumpet mouth facing the second connecting block, and the positioning inclined surface is used to be clamped on the port of the internal channel of the valve body.

4. The casting valve body milling equipment according to claim 2, characterized in that: The second connecting block is provided with a plurality of vertically penetrating connecting holes; The lateral positioning structure further includes a plurality of connecting members and a plurality of springs; Each connecting member includes a limiting portion, a guiding portion, and a connecting portion arranged in sequence, wherein the limiting portion is in limiting cooperation with the connecting hole, the guiding portion is in guiding cooperation with the inner side wall of the connecting hole, and the connecting portion is fixedly connected to the first connecting block; The guide portion outer sleeve is provided with a spring, and two ends of the spring are respectively in abutment with the second connecting block and the first connecting block.

5. The casting valve body milling equipment according to claim 2, characterized in that: The transport mechanism includes a three-dimensional moving component, a first rotating device, two second rotating devices, a visual recognition component and two clamping claws; The three-dimensional moving assembly is provided with a first connecting seat, the first rotating device is mounted on the first connecting seat and its rotating shaft is in the same direction as the first direction, the output end of the first rotating device is provided with a second connecting seat, the two second rotating devices and the visual recognition device are both mounted on the second connecting seat, the rotating shafts of the two second rotating devices are arranged in the vertical direction, and the two clamps are respectively mounted on the two second rotating devices; The head of the visual recognition device and the claw of the clamp face the same side.

6. The casting valve body milling equipment according to claim 5, characterized in that: The three bearing seats are respectively a first bearing seat, a second bearing seat and a third bearing seat in a direction gradually away from the main shaft. The first bearing seat and the second bearing seat are both provided with the first positioning assembly. The third bearing seat is L-shaped and includes a bearing block and a positioning block. The positioning block is provided on a side of the bearing block close to the main shaft. It also includes a second positioning assembly, including a bracket, a mounting plate, and a first pushing device, a second pushing device and a third pushing device installed on the mounting plate. The mounting plate is installed on the bracket, and the mounting plate is provided with a U-shaped avoidance opening. The opening of the U-shaped avoidance opening is opposite to the positioning block, and the first pushing device, the second pushing device and the third pushing device are respectively located on the inner side and both sides of the U-shaped avoidance opening.

7. The casting valve body milling equipment according to claim 1, characterized in that: There are two groups of fixing components, one of which is provided between two adjacent bearing seats; The clamping member includes a connecting strip and a clamping block, the two ends of the connecting strip are respectively connected to the middle position of the clamping block and the first driving device, the width of the clamping block is smaller than the length of the valve body in the first axial direction, and the two ends of the clamping member of at least one of the fixing components respectively clamp the valve body on the two adjacent bearing seats.

8. The casting valve body milling equipment according to claim 1, characterized in that: There are two groups of workbenches, which are symmetrically arranged at the middle position of the base.

9. A method for processing a casting valve body milling device, characterized in that: The cast valve body milling equipment is the cast valve body milling equipment according to any one of claims 1 to 8; During the processing, the valve body with all six surfaces unprocessed is called an unprocessed valve body, the valve body with two surfaces processed is called a first semi-finished product, the valve body with four surfaces processed is called a second semi-finished product, and the valve body with six surfaces processed is called a finished product. The processing method is as follows: Step S1: placing the unprocessed valve body on the third bearing seat to obtain a first semi-finished product; Step S2: placing the unprocessed valve body and the first semi-finished product on the third supporting seat and the second supporting seat respectively, and processing the first semi-finished product and the second semi-finished product; Step S3: placing the unprocessed valve body, the first semi-finished product, and the second semi-finished product on the third supporting seat, the second supporting seat, and the first supporting seat, respectively, to obtain the first semi-finished product, the second semi-finished product, and the finished product; Step S4: remove the finished product, place the second semi-finished product on the first supporting seat, then place the first semi-finished product and the unprocessed valve body on the second supporting seat and the third supporting seat in sequence, and finally remove the finished product; Step S5: Repeat step S4 until all valve bodies are processed.

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