A milling machine for casting valve bodies

Abstract

A milling machine for casting valve bodies includes a base, spindles, a worktable, and a transport mechanism. Two spindles are slidably connected to the base, arranged sequentially and facing each other along a first axis. The worktable is slidably connected to the base, and its movement direction is a first direction perpendicular to the first axis. The worktable includes a slide, three support seats, and a fixing assembly. The slide is slidably connected to the base, and the three support seats are arranged along the first direction and fixedly connected to the slide. The fixing assembly includes a first driving device and a clamping member. The first driving device drives the clamping member to move to a first position and a second position. In the first position, the clamping member is above the support seats and clamps the valve body; in the second position, the clamping member avoids the support seats. The transport mechanism transports the valve body to the three support seats for machining three pairs of sides of the valve body. Compared with the prior art, this invention improves processing efficiency and reduces production costs.

Description

Technical Field

[0001] This utility model belongs to the field of milling equipment technology, specifically relating to a milling equipment for casting valve bodies. Background Technology

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

[0003] To improve processing efficiency, existing milling machines for valve bodies are equipped with two spindles for double-sided milling of two opposite sides of the valve body. All six sides of the valve body are processed using three machines in an assembly line manner. Specifically, during the milling of the first two sides, based on the relative positions of the two surfaces to be machined and the two spindles, the operator places the valve body onto the loading mechanism according to a predetermined orientation. The loading mechanism then transports the valve body to a fixed fixture, which holds the valve body in place. The valve body is then moved to a position opposite the spindles for machining. After machining, the fixed fixture moves the valve body to the unloading station for unloading, completing the machining of two sides of the valve body. The semi-finished product processed by the first machine is transferred to the second machine and processed using the same steps (placement, loading, machining, unloading). The third machine also processes the valve body using the same method, ultimately completing the machining of all six sides of the valve body.

[0004] In the above scheme, the valve body is processed in an assembly line manner. While this provides good production continuity, if the fixture on one of the machines malfunctions, it can lead to material accumulation, affecting subsequent production and reducing efficiency. Processing all six sides of the valve body requires three machines, increasing production costs and requiring a large floor space. Furthermore, processing two sides of the valve body necessitates repeating the steps of placing, loading, processing, and unloading, making the process cumbersome and significantly reducing processing efficiency. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a milling equipment for casting valve bodies.

[0006] To achieve the above objectives, this utility model discloses a milling machine for casting valve bodies, comprising a base, a spindle, a worktable, and a conveying mechanism. The spindle is slidably connected to the base. There are two spindles, arranged sequentially and facing each other 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.

[0007] The worktable includes a slide, three support seats, and a fixing assembly. The slide is slidably connected to the base. The three support seats are arranged along the first direction and fixedly connected to the slide. The fixing assembly includes a first driving device and a clamping member. The first driving device is used to drive the clamping member to move to a first position and a second position. In the first position, the clamping member is located above the support seat and clamps the valve body. In the second position, the clamping member avoids the support seat. The conveying mechanism is used to convey the valve body to the three support seats for processing the three pairs of sides of the valve body respectively.

[0008] Preferably, at least one of the support bases and the slide is provided with a first positioning component;

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

[0010] The second drive device is fixedly connected to the slide, and the corresponding support is provided on the second drive device. The second drive device is provided with telescopic shafts on both sides along the first direction, and the telescopic shafts are arranged 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 a corresponding telescopic shaft, the second connecting block is movably connected to the first connecting block, and the positioning shaft is fixedly connected to the side of the second connecting block near the support.

[0013] Preferably, the end of the positioning shaft is provided with a positioning bevel, the positioning bevel is flared and the flared opening faces the second connecting block, and the positioning bevel is used to lock into 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 also includes multiple connectors and multiple springs;

[0016] Each connector includes a limiting part, a guiding part, and a connecting part arranged in sequence. The limiting part is in a limiting fit with the connecting hole, the guiding part is in a guiding fit with the inner sidewall of the connecting hole, and the connecting part is fixedly connected to the first connecting block.

[0017] The guide portion is fitted with a spring, and the two ends of the spring abut against the second connecting block and the first connecting block, respectively.

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

[0019] The three-dimensional moving component is provided with a first connecting seat, the first rotating device is mounted on the first connecting seat and its rotation axis 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 all mounted on the second connecting seat, the rotation axes of the two second rotating devices are arranged in the vertical direction, and the two grippers are respectively mounted on the two second rotating devices.

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

[0021] Preferably, the three bearing seats are designated as a first bearing seat, a second bearing seat, and a third bearing seat in a direction that gradually moves away from the main shaft. The first and second bearing seats are each provided with the first positioning component. The third bearing seat is L-shaped and includes a bearing block and a positioning block. The positioning block is located on the side of the bearing block closer to the main shaft.

[0022] It also includes a second positioning component, including a bracket, a mounting plate, and a first pushing device, a second pushing device, and a third pushing device mounted on the mounting plate. The mounting plate is mounted on the bracket and has a U-shaped clearance opening. The opening of the U-shaped clearance opening is opposite to the positioning block. The first pushing device, the second pushing device, and the third pushing device are located inside and on both sides of the U-shaped clearance opening, respectively.

[0023] Preferably, there are two sets of fixing components, with one fixing component located between two adjacent bearing seats;

[0024] The clamping component 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 less than the length of the valve body in the first axial direction. The two ends of the clamping component of at least one of the fixing components are respectively clamped to the valve body on two adjacent bearing seats.

[0025] Preferably, there are two sets of workbenches, which are symmetrically arranged in the middle of the base.

[0026] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0027] Two spindles are set up, and three bearing seats are set on the slide. Each bearing seat is a machining operation to process two sides of the valve body. After each two sides of the valve body are processed, the valve body is placed on the next bearing seat by the transport mechanism. After three processing operations, the processing of all six sides of the valve body can be completed.

[0028] By setting three bearing seats (i.e., three workstations and three processes) on the slide to process the six sides of the valve body, compared with the existing technology that requires three machines, only one machine is needed, which reduces equipment costs, production costs, and floor space.

[0029] During processing, valve bodies on three support seats can be processed simultaneously, resulting in higher production continuity and improved production efficiency. After processing, the semi-finished valve bodies are transferred from one support seat to another, eliminating the transfer actions in traditional assembly lines, shortening the production cycle, and further improving production efficiency.

[0030] If any of the bearing seats and the corresponding valve body fixing structure malfunctions, the handling mechanism will move the valve body to other bearing seats for processing. After processing, the valve body will be unloaded directly, avoiding the accumulation of products in a certain process, which would affect subsequent production and reduce production efficiency. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the solenoid valve in the embodiment;

[0032] Figure 2 A three-dimensional structural schematic diagram of the casting valve body milling equipment for an embodiment;

[0033] Figure 3 for Figure 2 A structural schematic diagram of the central base, spindle, worktable, and second positioning assembly;

[0034] Figure 4 for Figure 3 A schematic diagram of the three-dimensional structure of the intermediate workbench;

[0035] Figure 5 for Figure 4 An exploded three-dimensional structural diagram of the middle support and the first positioning component;

[0036] Figure 6 for Figure 2 A three-dimensional structural diagram of the first positioning component;

[0037] Figure 7 for Figure 1 A three-dimensional structural diagram of the conveying mechanism;

[0038] Figure 8 for Figure 1 A three-dimensional structural diagram of the conveying mechanism from another perspective;

[0039] Figure 9 for Figure 7 A schematic diagram of the structure installed at the bottom of the lifting arm;

[0040] Valve body 100; Channel 110; Marking 120;

[0041] Base 200;

[0042] Spindle 300;

[0043] Worktable 400; slide 410; support base 420; first support base 421; second support base 422; third support base 423; support block 4231; positioning block 4232; fixing assembly 430; first drive device 431; clamping member 432; connecting bar 4321; clamping block 4322; first positioning assembly 440; second drive 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 part 4451; guide part 4452; connecting part 4453; spring 446;

[0044] Second positioning component 500; bracket 510; mounting plate 520; U-shaped clearance 521; first jacking device 530; second jacking device 540; third jacking device 550;

[0045] The conveying mechanism 600; frame 611; crossbeam 612; transverse sliding 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; gripper 650. Detailed Implementation

[0046] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0047] Example 1

[0048] Before explaining this solution, this embodiment will briefly describe the structure of the solenoid valve body 100. For example... Figure 1 As shown, the valve body is a square block with a channel 110 running through two of its surfaces, and a marking 120 on one surface of the valve body.

[0049] A milling machine for casting valve bodies, see [link / reference] Figures 2-9 It includes a base 200, a spindle 300, a worktable 400, and a conveying mechanism 600.

[0050] The spindle 300 adopts an existing milling machine spindle 300 used for machining 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 worktable 400 is coaxial and facing each other in the left-right direction. It is slidably connected to the base 200, and can move along... Figure 2The worktable 400 moves in the forward and backward direction. The direction of movement of the worktable 400 is the first direction, which is perpendicular to the first axis. During machining, the worktable 400 moves to a position between the two spindles 300, and the two spindles 300 move towards each other, thereby milling the two opposite surfaces of the valve body on the worktable 400. After machining is completed, the two spindles 300 move in a direction that is relatively far apart, and the worktable 400 moves back to the initial position.

[0051] The workbench 400 includes a slide 410, three support seats 420, and a fixing assembly 430. The slide 410 is slidably connected to the base 200 via a guide rail slider structure. The three support seats 420 are spaced apart in the front-back direction and fixedly connected to the slide 410. The fixing 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 support seat 420 and clamps the valve body. In the second position, the clamping member 432 avoids the support seat 420. The conveying mechanism 600 is used to convey the valve body to the three support seats 420 for processing the three pairs of sides of the valve body respectively.

[0052] For ease of explanation, a valve body with all six sides unprocessed is called an unprocessed valve body, a valve body with two sides processed is called a first semi-finished product, a valve body with four sides processed is called a second semi-finished product, and a valve body with all six sides processed is called a finished product. The three support seats 420 are designated as the first support seat 421, the second support seat 422, and the third support seat 423, located gradually away from the main shaft 300. During processing, firstly, the unprocessed valve body is placed on the third support seat 423 to process two sides of the valve body, obtaining a first semi-finished product; secondly, the transport mechanism 600 transports the first semi-finished product to the second support seat 422, while simultaneously placing another unprocessed valve body on the third support seat 423, and the two valve bodies are processed sequentially to obtain the second semi-finished product and the first semi-finished product; thirdly, the transport mechanism 600 transports the second semi-finished product to the first support seat 421, and the first semi-finished product to the second support seat 422, while simultaneously placing another unprocessed valve body on the first support seat 421, and the three valve bodies are processed sequentially to obtain the finished product, the second semi-finished product, and the first semi-finished product; fourthly, the finished product is removed, and the third step is repeated. Since 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 each bearing seat 420 needs to be processed. Therefore, after processing each valve body, the two spindles 300 move outward away from the slide 410, while the slide 410 moves towards the spindles 300 to place the next bearing seat 420 in the processing position. Then, the two spindles 300 move inward.

[0053] Processing valve bodies using the above equipment has the following advantages;

[0054] (1) By setting three bearing seats 420 on the slide 410 (that is, three work stations and three processes) to process the six sides of the valve body, compared with the existing technology which uses three machines to process, only one machine is needed, which reduces equipment costs and production costs, and also reduces the floor space.

[0055] (2) During the processing, the valve bodies on the three bearing seats 420 can be processed together, resulting in higher production continuity and improved production efficiency. After processing, the semi-finished valve bodies are transferred from one bearing seat 420 to another bearing seat 420, eliminating the transfer action in the traditional assembly line, shortening the production cycle and further improving production efficiency.

[0056] (4) If any of the bearing seats 420 and the corresponding valve body fixing structure malfunctions, the handling mechanism 600 will move the valve body to other bearing seats 420 for processing. After processing, the valve body will be unloaded directly to avoid the product from accumulating in a certain process, which would affect subsequent production and reduce production efficiency.

[0057] In this embodiment, there are two sets of fixing components 430, with one fixing component 430 located between two adjacent bearing seats 420. The two sets of fixing components 430 have the same structure; one set will be described below. The first driving device 431 is a rotary clamping cylinder. The clamping component 432 includes a connecting strip 4321 and a clamping block 4322. Both ends of the connecting strip 4321 are connected to the middle position of the clamping block 4322 and the first driving device 431, respectively. The width of the clamping block 4322 is less than the length of the valve body in the first axial direction, so that the gripper 650 can clamp the valve body. At least one fixing component 430 has two ends of its clamping member 432 pressing against the valve bodies on two adjacent bearing seats 420. Specifically, one end of the clamping member 432 is located on the valve body of the first bearing / third bearing and can completely press against the corresponding valve body, while the other end of the clamping member 432 is located on the valve body of the second bearing and presses against one side of the valve body. The valve body of the second bearing is pressed against the clamping blocks 4322 of the two fixing components 430 together. Before processing, the rotary clamping cylinder drives the clamping member 432 to rotate downward, so that the two ends of the clamping blocks 4322 of the clamping member 432 press against the two valve bodies respectively. After processing, the rotary clamping cylinder drives the clamping member 432 to rotate upward, and the clamping blocks 4322 of the clamping member 432 no longer press against the valve body. At this time, the clamping blocks 4322 are arranged in the left and right direction, which will not affect the handling mechanism 600 to grasp and handle the valve body.

[0058] It is understandable that if the valve body is not square, and its length, width, and height are not equal, then the height of the three support seats can be specifically set so that the valve body on the three support seats is at the same height.

[0059] To improve processing accuracy and effectiveness, the valve body on each support seat 420 needs to be positioned. Cast valve bodies have relatively low dimensional accuracy. If the valve body's dimensions deviate, the positioning assembly cannot effectively position it. In this embodiment, a first positioning assembly 440 is provided between the first support seat 421 and the second support seat 422 and the slide seat 410. The two first positioning assemblies 440 have the same structure; taking one as an example: the first positioning assembly 440 includes a second driving device 441 and two lateral positioning structures. The second driving device 441 is fixedly connected to the slide seat 410, and the corresponding support seat 420 is fixed to the second driving device 441. The second driving device 441 is a cylinder, and it has telescopic shafts 4411 on both sides along the front-rear direction. The two telescopic shafts 4411 are both arranged along the front-rear direction. The two lateral positioning structures are respectively fixedly connected to the two telescopic shafts 4411. The two lateral positioning structures are identical, each 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, and the second connecting block 443 is movably connected to the first connecting block 442. The positioning shaft 444 is fixedly connected to the side of the second connecting block 443 near the bearing seat 420. Under normal conditions, the two telescopic shafts 4411 of the second drive device 441 extend outwards, corresponding to the two lateral positioning structures. At this time, the valve body can be placed on the first / second bearing seat 422, with the internal channel of the valve body opposite to the positioning shaft 444. Then, the two telescopic shafts 4411 retract, and the corresponding two lateral positioning structures retract inwards. The positioning shaft 444 engages with the internal channel of the valve body, thus enabling the valve body to be positioned on the first / second bearing seat 420.

[0060] The valve body is positioned on the second support 422. The second connecting block 443 is movable in the vertical direction, and this structure can also position the valve body if there is a manufacturing deviation.

[0061] Specifically, the end of the positioning shaft 444 is provided with a positioning inclined surface 4441, which is flared with its opening facing the second connecting block 443. The positioning inclined surface 4441 is used to engage with the port of the internal channel of the valve body. The second connecting block 443 is provided with four vertically penetrating connecting holes 4431. The lateral positioning structure also includes multiple connecting parts 445 and multiple springs 446. Each connecting part 445 includes a limiting part 4451, a guide part 4452, and a connecting part 4453 arranged sequentially. The limiting part 4451 engages with the connecting hole 4431. For example, the connecting hole 4431 is a countersunk hole, and the limiting part 4451 is engaged in the countersunk hole. The guide part 4452 engages with the inner wall of the connecting hole 4431. If the guide part 4452 is a shaft, the shaft engages with the inner wall of the small hole of the countersunk hole, allowing the second connecting block 443 to move up and down relative to the shaft. The connecting part 4453 is fixedly connected to the first connecting block 442, such as by a threaded connection. The connecting part 445 is further specifically a bolt. Each guide part 4452 is fitted with a spring 446, the two ends of which abut against the second connecting block 443 and the first connecting block 442 respectively. The above positioning is achieved by the funnel-shaped positioning bevel 4441 engaging with the valve body channel. This facilitates the insertion of the positioning shaft 444 into the valve body channel for positioning. Furthermore, the positioning bevel 4441, in conjunction with the second connecting block 443, can also position valve bodies with manufacturing deviations. Specifically, when the valve body height is slightly less than the set size, as the second drive device 441 drives the lateral positioning structure inward, the positioning shaft 444 gradually inserts into the channel, lifting the valve body. Then, the clamping member 432 rotates downward, pressing the valve body downward to secure it, thereby achieving valve body fixation and positioning, and improving processing quality. When machining valve bodies of different sizes, the vertical height of the rotating connector 445 is adjusted, thereby adjusting the height of the positioning shaft 444. This adapts to the machining of valve bodies of different sizes, offering high versatility. The spring 446 can lift the second connecting block 443 and also increase the rotational resistance between the connecting part 4453 and the second connecting block 443, ultimately improving the overall structural connection reliability.

[0062] The third support 423 is L-shaped and includes a support block 4231 and a positioning block 4232. The positioning block 4232 is located on the side of the support block 4231 near the main shaft 300. The equipment also includes a second positioning assembly 500, including 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 has a U-shaped clearance opening 521. The opening of the U-shaped clearance opening 521 is opposite to the positioning block 4232. When the unprocessed valve body is transported onto the support block 4231, the worktable 400 is first moved so that the support block 4231 is located in the U-shaped clearance opening 521. The unprocessed valve body can then be placed on the support block 4231 through the U-shaped clearance opening 521. The first pushing device 530, the second pushing device 540, and the third pushing device 550 are all telescopic cylinders, located inside the U-shaped clearance opening 521 (on one side of the bottom of the U-shape) and on both sides (on both sides of the U-shape), respectively. After the unprocessed valve body is placed on the support block 4231, the first pushing device 530 pushes the valve body until it rests against the positioning block 4232. Then, the second pushing device 540 and the third pushing device 550 push the unprocessed valve body from both sides to achieve its positioning.

[0063] In the two positioning structures described in this embodiment, the first positioning component 440 fully utilizes the channel provided by the valve body, allowing for a simpler, more compact, and smaller structure design. Therefore, it can be directly mounted on the slide 410. The first support 421 and the second support 422, which house the first positioning component 440, are positioned near the spindle 300, allowing the third support 423 to be positioned away from the spindle 300. This side has sufficient space to accommodate the second positioning component 500, preventing the second positioning component 500 from easily interfering with the spindle 300's machining process if it is positioned near the spindle 300.

[0064] The handling 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 grippers 650. The three-dimensional moving component refers to its ability to move forward, backward, left, right, and up. Specifically, in this embodiment, the three-dimensional moving component includes a frame 611, a crossbeam 612, a transverse sliding seat 613, and a lifting arm 614. The top of the frame 611 has a first rack arranged forward and backward. The crossbeam 612 is slidably connected to the top surface of the frame 611 via a guide rail slider structure. The crossbeam 612 has a first motor, and the output gear of the first motor engages with the first rack, thereby driving the crossbeam 612 to move forward and backward. Similarly, the crossbeam 612 has a second rack arranged left and right, and the transverse sliding seat 613 has a second motor, the output gear of the second motor engaging with the second rack, thereby driving the transverse sliding seat 613 to move left and right. The lifting arm 614 has a third rack arranged up and down, and the transverse sliding seat 613 has a third motor, the output gear of the second motor engaging 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. A first rotating device 620 is mounted on the first connecting seat 6141 with its rotating shaft arranged in the front-rear 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 vision recognition device are all mounted on the second connecting seat 621. The rotating shafts of the two second rotating devices 630 are arranged in the vertical direction. Two grippers 650 are respectively mounted on the two second rotating devices 630. The grippers 650 adopt existing pneumatic grippers 650. The head of the vision recognition device and the claw of the gripper 650 face the same side. After the recognition device recognizes the valve body, the gripper 650 performs the action of clamping the valve body. After the valve body on the third carrier is processed, the gripper clamps the valve body on the third carrier. The second rotating device rotates 90° (the internal channel of the valve body is arranged in the front-rear direction so that it can be positioned by the positioning shaft), and then the valve body is transported to the second carrier. After the valve body on the second carrier is processed, the clamps hold the valve body on the second carrier, and the first rotating device can move the valve body to the first carrier by rotating 90°.

[0065] In this embodiment, there are two sets of worktables 400, which are symmetrically arranged in the middle of the base 200. By setting up two sets of worktables 400, when one worktable 400 is processing, the other worktable 400 can perform valve body transport work, and the two worktables 400 can work alternately and cyclically, thereby improving processing efficiency.

[0066] Example 2

[0067] A machining method for a casting valve body milling machine includes the following steps:

[0068] Step S1: Place the unprocessed valve body on the third support seat 423 to obtain the first semi-finished product;

[0069] Step S2: Place the unprocessed valve body and the first semi-finished product on the third support seat 423 and the second support seat 422 respectively, and process them to obtain the first semi-finished product and the second semi-finished product;

[0070] Step S3: Place the unprocessed valve body, the first semi-finished product, and the second semi-finished product on the third support seat 423, the second support seat 422, and the first support seat 421 respectively, and process them to obtain the first semi-finished product, the second semi-finished product, and the finished product.

[0071] Step S4: Remove the finished product, place the second semi-finished product on the first support seat 421, then place the first semi-finished product and the unprocessed valve body on the second support seat 422 and the third support seat 423 in sequence, and finally unload the finished product.

[0072] Step S5: Repeat step S4 until the processing is complete.

[0073] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A milling machine for casting valve bodies, comprising a base, a spindle, a worktable, and a conveying mechanism, wherein the spindle is slidably connected to the base, there are two spindles, the two spindles are arranged sequentially and facing each other along a first axis, the worktable is slidably connected to the base, and the moving direction of the worktable is a first direction, the first direction being perpendicular to the first axis, characterized in that: The worktable includes a slide, three support seats, and a fixing assembly. The slide is slidably connected to the base. The three support seats are arranged along the first direction and fixedly connected to the slide. The fixing assembly includes a first driving device and a clamping member. The first driving device is used to drive the clamping member to move to a first position and a second position. In the first position, the clamping member is located above the support seat and clamps the valve body. In the second position, the clamping member avoids the support seat. The conveying mechanism is used to convey the valve body to the three support seats for processing the three pairs of sides of the valve body respectively.

2. The casting valve body milling equipment according to claim 1, characterized in that: At least one of the support bases and the slide is provided with a first positioning component; The first positioning component includes a second driving device and two lateral positioning structures; The second drive device is fixedly connected to the slide, and the corresponding support is provided on the second drive device. The second drive device is provided with telescopic shafts on both sides along the first direction, and the telescopic shafts are arranged 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 a corresponding telescopic shaft, the second connecting block is movably connected to the first connecting block, and the positioning shaft is fixedly connected to the side of the second connecting block near the support.

3. The casting valve body milling equipment according to claim 2, characterized in that: The end of the positioning shaft is provided with a positioning bevel, which is horn-shaped with the horn opening facing the second connecting block. The positioning bevel is used to lock into 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 multiple vertical through connecting holes; The lateral positioning structure also includes multiple connectors and multiple springs; Each connector includes a limiting part, a guiding part, and a connecting part arranged in sequence. The limiting part is in a limiting fit with the connecting hole, the guiding part is in a guiding fit with the inner sidewall of the connecting hole, and the connecting part is fixedly connected to the first connecting block. The guide portion is fitted with a spring, and the two ends of the spring abut against the second connecting block and the first connecting block, respectively.

5. The casting valve body milling equipment according to claim 2, characterized in that: The conveying mechanism includes a three-dimensional moving component, a first rotating device, two second rotating devices, a visual recognition component, and two grippers; The three-dimensional moving component is provided with a first connecting seat, the first rotating device is mounted on the first connecting seat and its rotation axis 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 all mounted on the second connecting seat, the rotation axes of the two second rotating devices are arranged in the vertical direction, and the two grippers are respectively mounted on the two second rotating devices. The head of the visual recognition device and the claw of the gripper face the same side.

6. The milling equipment for casting valve bodies according to claim 5, characterized in that: The three bearing seats are designated as a first bearing seat, a second bearing seat, and a third bearing seat in a direction that gradually moves away from the main shaft. The first and second bearing seats are both equipped with the first positioning component. The third bearing seat is L-shaped and includes a bearing block and a positioning block. The positioning block is located on the side of the bearing block closer to the main shaft. It also includes a second positioning component, including a bracket, a mounting plate, and a first pushing device, a second pushing device, and a third pushing device mounted on the mounting plate. The mounting plate is mounted on the bracket and has a U-shaped clearance opening. The opening of the U-shaped clearance opening is opposite to the positioning block. The first pushing device, the second pushing device, and the third pushing device are located inside and on both sides of the U-shaped clearance opening, respectively.

7. The milling equipment for casting valve bodies according to claim 1, characterized in that: There are two sets of fixing components, with one fixing component between two adjacent bearing seats; The clamping component 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 less than the length of the valve body in the first axial direction. The two ends of the clamping component of at least one of the fixing components are respectively clamped to the valve body on two adjacent bearing seats.

8. The milling equipment for casting valve bodies according to claim 1, characterized in that: The workbench is in two sets, and the two sets of workbench are symmetrically arranged in the middle of the base.

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