Machining equipment and machining method for screw pump metal rotor mold cavity

Abstract

The invention discloses machining equipment and a machining method for a mold cavity of a metal rotor of a screw pump, and belongs to the technical field of mold cavity machining and manufacturing. The fixing device is arranged on the base and fixedly connected with the base; the rotor mold is arranged on the fixing device and is fixed through the fixing device; the moving device and the fixing device are oppositely arranged on the base, and the moving device is in sliding connection with the base; the machining mechanism is arranged on the moving device and fixedly connected with the moving device, and the moving device drives the machining mechanism to move relative to the rotor mold and is used for machining a cavity of the rotor mold; and the controller is electrically connected with the moving device and the machining mechanism and used for controlling operation parameters of the moving device and the machining mechanism. By the adoption of the structure, various machining requirements of the rotor mold cavity can be met, and the machining precision is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of mold cavity processing and manufacturing, and in particular to a processing device and a processing method for a screw pump metal rotor mold cavity. Background Art

[0002] The screw pump rotor is one of the core components of the screw pump, and its function is to transport liquid or gas from the suction port of the pump to the discharge port. Specifically, the screw pump rotor generates centrifugal force and spiral propulsion force through rotational motion, sucking the fluid from the suction port of the pump, and then pushing it to the discharge port of the pump along the spiral line of the screw. The screw pump rotor generates negative pressure inside the pump body through rotational motion, sucking the fluid from the suction port into the pump. When the screw pump rotor rotates, the spiral line of the screw pushes the fluid along the spiral line to the discharge port of the pump. The design of the screw pump rotor can generate a certain pressure, so that the fluid can be properly pressurized during the conveying process to meet the pressure requirements of the conveying system. The design and motion characteristics of the screw pump rotor can ensure that the fluid maintains a stable flow state during the conveying process, avoiding turbulence or other unstable phenomena. In general, the screw pump rotor is a key component of the screw pump to achieve liquid or gas delivery. Its rotational motion can effectively suck the fluid from the suction port and transport it to the discharge port, meeting the needs of industrial production and fluid delivery systems.

[0003] The manufacture of screw pump rotors usually adopts casting, forging, machining, etc. Casting is one of the commonly used methods. In the early stage, the production of screw pump rotors mainly adopts traditional casting processes, such as sand casting, metal mold casting, etc. These methods are simple and rough, and the quality of products is difficult to guarantee, especially in the case of complex cavity and high precision requirements, it is difficult to meet production needs. With the improvement of mold manufacturing technology and the development of precision machining technology, the manufacturing accuracy and surface finish of casting molds have been improved, providing a better process basis for casting screw pump rotors. At the same time, the renewal of mold materials also provides support for the improvement of casting technology. With the application of automation technology in industrial production, automated casting lines are gradually applied to the production of screw pump rotors. Automated casting lines can improve production efficiency, reduce production costs, and achieve better control of product quality. The rotor mold is one of the important workpieces in the rotor casting process. The machining of the rotor mold cavity determines the final manufacturing accuracy and surface finish of the rotor. At present, there is a lack of integrated equipment for manufacturing, processing and finishing of rotor molds. If other grinding equipment is used, the cost is high, the processing efficiency is low, and the processing accuracy cannot be guaranteed. Summary of the invention

[0004] The purpose of the present invention is to provide a processing device and a processing method for a screw pump metal rotor mold cavity, so as to solve the problems that the current equipment cost for processing the rotor mold cavity is high and the processing efficiency cannot be guaranteed.

[0005] To achieve the above object, the present invention provides a processing device for a metal rotor mold cavity of a screw pump, comprising:

[0006] The base is used to carry various devices of the processing equipment and provide support;

[0007] A fixing device, disposed on the base and fixedly connected to the base;

[0008] a rotor mold, disposed on the fixing device and fixed by the fixing device;

[0009] A moving device, arranged on the base opposite to the fixing device and slidably connected to the base;

[0010] a processing mechanism, which is disposed on the moving device and fixedly connected to the moving device, and the moving device drives the processing mechanism to move relative to the rotor mold to process the cavity of the rotor mold;

[0011] A controller is electrically connected to the mobile device and the processing mechanism, and is used to control the operating parameters of the mobile device and the processing mechanism.

[0012] Preferably, in the above-mentioned processing equipment for the metal rotor mold cavity of a screw pump, the fixing device comprises:

[0013] A fixing seat, disposed on the base and fixedly connected to the base;

[0014] A fixing ring, which is tangentially arranged on the fixing seat and fixedly connected to the fixing seat;

[0015] A fixing bolt, vertically arranged on the top of the fixing ring and fixedly connected to the fixing ring;

[0016] A fixing screw rod has one end which penetrates through the fixing bolt and the fixing ring, extends into the fixing ring, is threadedly connected with the fixing bolt and the fixing ring, and has a handle at the other end.

[0017] Preferably, in the above-mentioned processing equipment for the metal rotor mold cavity of a screw pump, the moving device includes a translation mechanism and a lifting mechanism, and the translation mechanism includes:

[0018] A sliding seat is arranged on the base and is slidably connected with the base. A sliding groove is arranged on the base. A sliding block is arranged at the bottom of the sliding seat corresponding to the sliding groove. Lubricating oil is applied between the sliding groove and the sliding block, and the two are slidably connected.

[0019] A driving gear is arranged on both sides of the sliding seat through a rotating shaft, and the rotating shaft is fixedly connected to the sliding seat and the driving gear;

[0020] A driving gear is arranged in the base. Two concave grooves are arranged on the base. Two driving gears are arranged opposite to each other in the two concave grooves. The two driving gears are fixedly connected with a driving shaft. The driving shaft passes through the base and is rotatably connected to the base.

[0021] There are two driven gears, which are respectively arranged in the two concave grooves in parallel with the two driving gears. The two driven gears are fixedly connected with a transmission shaft, which passes through the base and is rotatably connected with the base;

[0022] There are two transmission chains, which are respectively arranged in the two concave grooves, sleeved on the parallel driving gear and the driven gear, meshed with the driving gear and the driven gear, and meshed with the driving gear;

[0023] The driving motor is arranged at one side of the base and is fixedly connected to the base. The output end of the driving motor is fixedly connected to the driving shaft and is used to drive the driving gear to rotate.

[0024] Preferably, in the above-mentioned processing equipment for the metal rotor mold cavity of a screw pump, the lifting mechanism comprises:

[0025] A lifting seat, wherein a cavity is provided in the sliding seat, the lifting seat is arranged in the sliding seat, and an installation cavity for installing the processing mechanism is provided on the lifting seat;

[0026] The lifting cylinder is arranged in the cavity of the sliding seat, two of which are arranged relatively parallel and fixedly connected to the sliding seat, and the output end of the lifting cylinder is fixedly connected to the bottom of the lifting seat, so as to drive the lifting seat to move up and down.

[0027] Preferably, in the above-mentioned processing equipment for the metal rotor mold cavity of a screw pump, the processing mechanism includes:

[0028] A processing motor is arranged in the installation cavity of the lifting seat and is fixedly connected to the lifting seat;

[0029] A processing rod, fixedly connected to the output end of the processing motor;

[0030] The grinding piece is connected to the end of the machining rod through a chuck fixture.

[0031] Preferably, in the above-mentioned processing equipment for the metal rotor mold cavity of a screw pump, the processing grinding parts include milling cutters, grinding sand strips, and polishing sand strips that are compatible with the rotor to be prepared.

[0032] Preferably, in the above-mentioned embodiment of the processing equipment for the metal rotor mold cavity of a screw pump, the controller is electrically connected to the driving motor, the lifting cylinder and the processing motor, and the operating parameters such as the rotational speed of the driving motor and the processing motor are set by the controller to control the lifting height of the lifting cylinder.

[0033] Preferably, a method for processing a screw pump metal rotor mold cavity using the above processing equipment comprises:

[0034] Step 1: fix the rotor mold, place the end of the rotor mold in the fixing ring, and rotate the fixing screw by the handle to make the fixing screw and the rotor mold abut against each other to fix the rotor mold;

[0035] Step 2: fix the milling cutter on the processing rod through a chuck fixture, start the lifting cylinder through the controller, and adjust the height of the lifting seat so that the processing rod and the rotor mold are coaxially arranged;

[0036] Step 3, setting the operating parameters of the driving motor and the processing motor through the controller, starting the driving motor, and simultaneously starting the processing motor, so that the sliding seat moves toward the rotor mold, and the milling cutter cuts out a cavity at the center of the rotor mold;

[0037] Step 4: After the cavity manufacturing is completed, the driving motor and the processing motor are reversed with the same operating parameters as in step 3, the milling cutter is withdrawn from the rotor mold cavity, the milling cutter is removed, the grinding sand strip is fixed on the processing rod, the driving motor and the processing motor are started, the processing rod drives the grinding sand strip to rotate in the rotor mold cavity, and at the same time, the driving motor rotates to drive the processing rod and the grinding sand strip to move toward the bottom of the rotor mold cavity. When moving to the bottom, the driving motor reverses to drive the processing rod to move in the opposite direction, so that the grinding sand strip rotates and moves at the same time, and the spiral surface of the rotor mold cavity is polished back and forth, and the spiral surface of the rotor mold cavity is rough-machined and semi-finished;

[0038] Step five, after the grinding is completed with the grinding sand strip, the polishing sand strip is installed on the processing rod, and the drive motor and the processing motor are started. The processing rod drives the polishing sand strip to rotate in the rotor mold cavity. At the same time, the drive motor rotates to drive the processing rod and the polishing sand strip to move to the bottom of the rotor mold cavity. When moving to the bottom, the drive motor reverses to drive the processing rod to move in the opposite direction, so that the polishing sand strip rotates and moves at the same time, polishing and grinding the spiral surface of the rotor mold cavity back and forth, and fine-machining the spiral surface of the rotor mold cavity to complete the processing process of the rotor mold cavity.

[0039] Preferably, in the above-mentioned method for processing the metal rotor mold cavity of a screw pump, in step four, grinding strips of different particle sizes can be replaced according to the grinding conditions, and the spiral surface of the rotor mold cavity can be ground multiple times to complete the rough machining and semi-finishing processes.

[0040] Therefore, the present invention adopts a processing equipment and a processing method for a screw pump metal rotor mold cavity of the above-mentioned structure. By setting a lifting mechanism, the processing rod can be adjusted by lifting the height to ensure that the processing rod and the rotor mold are in a coaxial position for rotor molds of various sizes. The translation mechanism is set to enable the processing rod to move in the rotor mold cavity to complete the processing process of the rotor mold cavity. Various processing grinding parts can be replaced on the processing rod. The manufacturing, rough processing, semi-finishing and finishing processes of the rotor mold cavity can be completed by replacing the processing grinding parts. This equipment is an integrated equipment that can complete the overall processing process of the rotor mold cavity. It has a compact structure, can meet various processing requirements of the rotor mold cavity, ensure processing accuracy, complete the overall processing process by one equipment, and improve processing efficiency.

[0041] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a schematic diagram of the overall structure of a processing device of an embodiment of a processing device for a metal rotor mold cavity of a screw pump according to the present invention;

[0043] Figure 2 It is a schematic cross-sectional structural diagram of a processing device of a screw pump metal rotor mold cavity processing device embodiment of the present invention;

[0044] Figure 3 The present invention is a schematic diagram of a cross-sectional structure of a processing equipment embodiment of a processing equipment for a metal rotor mold cavity of a screw pump from a side view.

[0045] Reference numerals

[0046] 1. Base; 2. Fixing device; 3. Rotor mold; 4. Moving device; 5. Processing mechanism;

[0047] 11. Sliding groove; 12. Concave groove;

[0048] 21. Fixed seat; 22. Fixed ring; 23. Fixed bolt; 24. Fixed screw; 25. Handle;

[0049] 41. Translation mechanism; 42. Lifting mechanism;

[0050] 411, sliding seat; 412, driving gear; 413, driving gear; 414, driven gear; 415, transmission chain; 416, driving motor; 417, sliding block; 418, driving shaft;

[0051] 421, lifting seat; 422, lifting cylinder;

[0052] 51. Processing motor; 52. Processing rod; 53. Processing grinding parts; 54. Chuck fixture. DETAILED DESCRIPTION

[0053] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0054] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, and "multiple" generally includes at least two.

[0055] It should also be noted that the term "includes", "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, so that a commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the commodity or device including the elements.

[0056] See attached Figure 1-3 The present application provides a processing device for a metal rotor mold cavity of a screw pump, comprising:

[0057] Base 1, used to carry various devices of the processing equipment and provide support;

[0058] A fixing device 2, disposed on the base 1 and fixedly connected to the base 1;

[0059] The rotor mold 3 is arranged on the fixing device 2 and fixed by the fixing device 2;

[0060] The moving device 4 is arranged on the base 1 opposite to the fixing device 2 and is slidably connected to the base 1;

[0061] a processing mechanism 5, which is disposed on the moving device 4 and fixedly connected to the moving device 4, and the moving device 4 drives the processing mechanism 5 to move relative to the rotor mold 3, so as to process the cavity of the rotor mold 3;

[0062] The controller is electrically connected to the moving device 4 and the processing mechanism 5 and is used to control the operating parameters of the moving device 4 and the processing mechanism 5.

[0063] Specifically, the controller can control the start and stop and operating parameters of the processing mechanism 5 and the moving device 4, and can complete the processing process of the rotor mold cavity through the control of the controller, freeing up manpower. It only needs to manually fix the rotor mold 3 through the fixing device 2.

[0064] To further optimize the above technical solution, the fixing device 2 includes:

[0065] A fixing seat 21 is disposed on the base 1 and fixedly connected to the base 1;

[0066] A fixing ring 22, which is tangentially arranged on the fixing seat 21 and fixedly connected to the fixing seat 21;

[0067] A fixing bolt 23 is vertically arranged on the top of the fixing ring 22 and fixedly connected to the fixing ring 22;

[0068] One end of the fixing screw rod 24 passes through the fixing bolt 23 and the fixing ring 22 , extends into the fixing ring 22 , and is threadedly connected with the fixing bolt 23 and the fixing ring 22 , and the other end of the fixing screw rod 24 is provided with a handle 25 .

[0069] It should be noted that when fixing the rotor mold 3, the end of the rotor mold 3 is placed in the fixing ring 22, and the fixing screw 24 is tightened so that the fixing screw 24 abuts against the rotor mold 3 to complete the fixation of the rotor mold 3. The setting of the fixing screw 24 and the fixing ring 22 can enable the fixing device 2 to complete the fixation of rotor molds 3 of various sizes. A handle 25 is provided on the fixing screw 24, and the fixing screw 24 can be rotated by the handle 25, which saves time and effort.

[0070] To further optimize the above technical solution, the moving device 4 includes a translation mechanism 41 and a lifting mechanism 42, and the translation mechanism 41 includes:

[0071] A sliding seat 411 is disposed on the base 1 and is slidably connected to the base 1. A sliding groove 11 is disposed on the base 1. A sliding block 417 is disposed at the bottom of the sliding seat 411 corresponding to the sliding groove 11. Lubricating oil is applied between the sliding groove 11 and the sliding block 417, and the two are slidably connected.

[0072] The driving gear 412 is disposed on both sides of the sliding seat 411 through a rotating shaft, and the rotating shaft is fixedly connected to the sliding seat 411 and the driving gear 412;

[0073] A driving gear 413 is disposed in the base 1. Two concave grooves 12 are disposed on the base 1. Two driving gears 413 are disposed opposite to each other in the two concave grooves 12. The two driving gears 413 are fixedly connected to a driving shaft 418. The driving shaft 418 penetrates the base 1 and is rotatably connected to the base 1.

[0074] There are two driven gears 414, which are respectively arranged in parallel with the two driving gears 413 in the two concave grooves 12, and the two driven gears 414 are fixedly connected with a transmission shaft, which passes through the base 1 and is rotatably connected to the base 1;

[0075] There are two transmission chains 415, which are respectively arranged in the two concave grooves 12, sleeved on the parallel driving gear 413 and the driven gear 414, meshed with the driving gear 413 and the driven gear 414, and meshed with the driving gear 412;

[0076] The driving motor 416 is disposed at one side of the base 1 and is fixedly connected to the base 1 . An output end of the driving motor 416 is fixedly connected to the driving shaft 418 for driving the driving gear 413 to rotate.

[0077] Specifically, the transmission chain 415 is sleeved on the driving gear 413 and the driven gear 414, and meshes with the driving gear 412. The driving gear 413 is connected to the driving motor 416. The driving motor 416 is started to drive the driving gear 413 to rotate, and the driving gear 413 drives the transmission chain 415 and the driven gear 414 to rotate. The transmission chain 415 is meshed with the driving gear 412, so that the driving gear 412 moves with the transmission chain 415, thereby driving the sliding seat 411 to move. A sliding block 417 is provided at the bottom of the sliding seat 411, and the sliding block 417 is provided in the sliding groove 11. Applying lubricating oil in the sliding block 417 and the sliding groove 11 reduces the friction resistance of the sliding seat 411, so that the sliding seat 411 can move easily driven by the transmission chain 415 and the driving gear 412, and only needs to be regularly replenished with lubricating oil.

[0078] To further optimize the above technical solution, the lifting mechanism 42 includes:

[0079] A lifting seat 421, wherein a cavity is provided in the sliding seat 411, the lifting seat 421 is provided in the sliding seat 411, and an installation cavity for installing the processing mechanism 5 is provided on the lifting seat 421;

[0080] The lifting cylinder 422 is disposed in the cavity of the sliding seat 411 , two of which are relatively parallel and fixedly connected to the sliding seat 411 , and an output end thereof is fixedly connected to the bottom of the lifting seat 421 for driving the lifting seat 421 to move up and down.

[0081] It should be noted that the lifting seat 421 can be driven up and down by the lifting cylinder 422, so that the processing rod 52 of the processing mechanism 5 can be coaxially arranged with the rotor mold 3. It is only necessary to adjust the height of the processing rod 52 before the processing starts, and no adjustment is required in the subsequent processing process, which simplifies the processing process and improves the processing efficiency.

[0082] To further optimize the above technical solution, the processing mechanism 5 includes:

[0083] The processing motor 51 is disposed in the installation cavity of the lifting seat 421 and is fixedly connected to the lifting seat 421;

[0084] A processing rod 52, fixedly connected to the output end of the processing motor 51;

[0085] The machining and grinding piece 53 is connected to the end of the machining rod 52 through a chuck fixture 54 .

[0086] To further optimize the above technical solution, the processing grinding parts 53 include milling cutters, grinding sand strips, and polishing sand strips that are compatible with the rotor to be prepared.

[0087] It should be noted that different processing grinding parts 53 can be replaced according to the processing progress, and the overall processing process of the rotor mold cavity can be completed using integrated equipment. The processing motor 51 rotates to drive the processing rod 52 and the processing grinding part 53 to rotate in the rotor mold 3 cavity, thereby completing the processing of the rotor mold cavity.

[0088] To further optimize the above technical solution, the controller is electrically connected to the drive motor 416, the lifting cylinder 422 and the processing motor 51. The controller sets the operating parameters such as the rotation speed of the drive motor 416 and the processing motor 51 to control the lifting height of the lifting cylinder 422.

[0089] Specifically, the operation method is simplified through the control of the controller, and the operating parameters of the drive motor 416 and the processing motor 51 can be set through the controller to ensure the processing accuracy. The circuit connection between the controller and the drive motor 416, the lifting cylinder 422 and the processing motor 51 adopts the conventional connection method in the prior art.

[0090] In order to further optimize the above technical solution, a method for processing a metal rotor mold cavity of a screw pump is provided, comprising:

[0091] Step 1: fix the rotor mold 3, place the end of the rotor mold 3 in the fixing ring 22, and rotate the fixing screw 24 by the handle 25 so that the fixing screw 24 and the rotor mold 3 abut against each other to fix the rotor mold 3;

[0092] Step 2: fix the milling cutter on the processing rod 52 through the chuck fixture 54, start the lifting cylinder 422 through the controller, and adjust the height of the lifting seat 421 so that the processing rod 52 and the rotor mold 3 are coaxially arranged;

[0093] Step 3: Set the operating parameters of the drive motor 416 and the processing motor 51 through the controller, start the drive motor 416, and start the processing motor 51 at the same time, so that the sliding seat 411 moves toward the rotor mold 3, and the milling cutter cuts out a cavity at the center of the rotor mold 3;

[0094] Step 4: After the cavity manufacturing is completed, the driving motor 416 and the processing motor 51 are reversed with the same operating parameters as step 3, the milling cutter is withdrawn from the rotor mold cavity, the milling cutter is removed, the grinding sand strip is fixed on the processing rod 52, the driving motor 416 and the processing motor 51 are started, and the processing rod 52 drives the grinding sand strip to rotate in the rotor mold cavity. At the same time, the driving motor 416 rotates to drive the processing rod 52 and the grinding sand strip to move to the bottom of the rotor mold cavity. When moving to the bottom, the driving motor 416 reverses to drive the processing rod 52 to move in the opposite direction, so that the grinding sand strip rotates and moves at the same time, grinding the spiral surface of the rotor mold cavity back and forth, and performing rough processing and semi-finishing on the spiral surface of the rotor mold cavity;

[0095] Step five, after the grinding is completed with the grinding sand strip, the polishing sand strip is installed on the processing rod 52, and the drive motor 416 and the processing motor 51 are started. The processing rod 52 drives the polishing sand strip to rotate in the rotor mold cavity. At the same time, the drive motor 416 rotates to drive the processing rod 52 and the polishing sand strip to move toward the bottom of the rotor mold cavity. When moving to the bottom, the drive motor 416 reverses to drive the processing rod 52 to move in the opposite direction, so that the polishing sand strip rotates and moves at the same time, polishing and grinding the spiral surface of the rotor mold cavity back and forth, and fine-machining the spiral surface of the rotor mold cavity to complete the processing process of the rotor mold cavity.

[0096] To further optimize the above technical solution, in step 4, grinding sand strips with different particle sizes can be replaced according to the grinding conditions, and the spiral surface of the rotor mold cavity can be ground multiple times to complete the rough machining and semi-finishing processes.

[0097] It should be noted that grinding strips with different particle sizes can be replaced according to different precision requirements to grind the rotor mold cavity, and polishing strips are used for fine processing after grinding to ensure processing accuracy.

[0098] Therefore, the present invention adopts a processing equipment and a processing method for a screw pump metal rotor mold cavity of the above-mentioned structure. By setting a lifting mechanism, the processing rod can be adjusted by lifting the height to ensure that the processing rod and the rotor mold are in a coaxial position for rotor molds of various sizes. The translation mechanism is set to enable the processing rod to move in the rotor mold cavity to complete the processing process of the rotor mold cavity. Various processing grinding parts can be replaced on the processing rod. The manufacturing, rough processing, semi-finishing and finishing processes of the rotor mold cavity can be completed by replacing the processing grinding parts. This equipment is an integrated equipment that can complete the overall processing process of the rotor mold cavity. It has a compact structure, can meet various processing requirements of the rotor mold cavity, ensure processing accuracy, complete the overall processing process by one equipment, and improve processing efficiency.

[0099] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A processing device for a screw pump metal rotor mold cavity, characterized in that: include: The base is used to carry various devices of the processing equipment and provide support; A fixing device, disposed on the base and fixedly connected to the base; a rotor mold, disposed on the fixing device and fixed by the fixing device; A moving device, arranged on the base opposite to the fixing device and slidably connected to the base; a processing mechanism, which is disposed on the moving device and fixedly connected to the moving device, and the moving device drives the processing mechanism to move relative to the rotor mold to process the cavity of the rotor mold; A controller is electrically connected to the mobile device and the processing mechanism, and is used to control the operating parameters of the mobile device and the processing mechanism.

2. The processing equipment for the metal rotor mold cavity of a screw pump according to claim 1, characterized in that: The fixing device comprises: A fixing seat, disposed on the base and fixedly connected to the base; A fixing ring, which is tangentially arranged on the fixing seat and fixedly connected to the fixing seat; A fixing bolt, vertically arranged on the top of the fixing ring and fixedly connected to the fixing ring; A fixing screw rod has one end which penetrates through the fixing bolt and the fixing ring, extends into the fixing ring, is threadedly connected with the fixing bolt and the fixing ring, and has a handle at the other end.

3. The processing equipment for the metal rotor mold cavity of a screw pump according to claim 2, characterized in that: The moving device includes a translation mechanism and a lifting mechanism, and the translation mechanism includes: A sliding seat is arranged on the base and is slidably connected with the base. A sliding groove is arranged on the base. A sliding block is arranged at the bottom of the sliding seat corresponding to the sliding groove. Lubricating oil is applied between the sliding groove and the sliding block, and the two are slidably connected. A driving gear is arranged on both sides of the sliding seat through a rotating shaft, and the rotating shaft is fixedly connected to the sliding seat and the driving gear; A driving gear is arranged in the base. Two concave grooves are arranged on the base. Two driving gears are arranged opposite to each other in the two concave grooves. The two driving gears are fixedly connected with a driving shaft. The driving shaft passes through the base and is rotatably connected to the base. There are two driven gears, which are respectively arranged in the two concave grooves in parallel with the two driving gears. The two driven gears are fixedly connected with a transmission shaft, which passes through the base and is rotatably connected with the base; There are two transmission chains, which are respectively arranged in the two concave grooves, sleeved on the parallel driving gear and the driven gear, meshed with the driving gear and the driven gear, and meshed with the driving gear; The driving motor is arranged at one side of the base and is fixedly connected to the base. The output end of the driving motor is fixedly connected to the driving shaft and is used to drive the driving gear to rotate.

4. The processing equipment for the metal rotor mold cavity of a screw pump according to claim 3, characterized in that: The lifting mechanism comprises: A lifting seat, wherein a cavity is provided in the sliding seat, the lifting seat is arranged in the sliding seat, and an installation cavity for installing the processing mechanism is provided on the lifting seat; The lifting cylinder is arranged in the cavity of the sliding seat, two of which are arranged relatively parallel and fixedly connected to the sliding seat, and the output end of the lifting cylinder is fixedly connected to the bottom of the lifting seat, so as to drive the lifting seat to move up and down.

5. The processing equipment for the metal rotor mold cavity of a screw pump according to claim 4, characterized in that: The processing mechanism comprises: A processing motor is arranged in the installation cavity of the lifting seat and is fixedly connected to the lifting seat; A processing rod, fixedly connected to the output end of the processing motor; The grinding piece is connected to the end of the machining rod through a chuck fixture.

6. The processing equipment for the metal rotor mold cavity of a screw pump according to claim 5, characterized in that: The processing grinding parts include milling cutters, grinding sand strips and polishing sand strips that are matched with the rotor to be prepared.

7. The processing equipment for the metal rotor mold cavity of a screw pump according to claim 6, characterized in that: The controller is electrically connected to the driving motor, the lifting cylinder and the processing motor. The controller is used to set operating parameters such as the rotation speed of the driving motor and the processing motor to control the lifting height of the lifting cylinder.

8. A method for processing a metal rotor mold cavity of a screw pump, characterized in that: include: Step 1: fix the rotor mold, place the end of the rotor mold in the fixing ring, and rotate the fixing screw by the handle to make the fixing screw and the rotor mold abut against each other to fix the rotor mold; Step 2: fix the milling cutter on the processing rod through a chuck fixture, start the lifting cylinder through the controller, and adjust the height of the lifting seat so that the processing rod and the rotor mold are coaxially arranged; Step 3, setting the operating parameters of the driving motor and the processing motor through the controller, starting the driving motor, and simultaneously starting the processing motor, so that the sliding seat moves toward the rotor mold, and the milling cutter cuts out a cavity at the center of the rotor mold; Step 4: After the cavity manufacturing is completed, the driving motor and the processing motor are reversed with the same operating parameters as in step 3, the milling cutter is withdrawn from the rotor mold cavity, the milling cutter is removed, the grinding sand strip is fixed on the processing rod, the driving motor and the processing motor are started, the processing rod drives the grinding sand strip to rotate in the rotor mold cavity, and at the same time, the driving motor rotates to drive the processing rod and the grinding sand strip to move toward the bottom of the rotor mold cavity. When moving to the bottom, the driving motor reverses to drive the processing rod to move in the opposite direction, so that the grinding sand strip rotates and moves at the same time, and the spiral surface of the rotor mold cavity is polished back and forth, and the spiral surface of the rotor mold cavity is rough-machined and semi-finished; Step five, after the grinding is completed with the grinding sand strip, the polishing sand strip is installed on the processing rod, and the drive motor and the processing motor are started. The processing rod drives the polishing sand strip to rotate in the rotor mold cavity. At the same time, the drive motor rotates to drive the processing rod and the polishing sand strip to move to the bottom of the rotor mold cavity. When moving to the bottom, the drive motor reverses to drive the processing rod to move in the opposite direction, so that the polishing sand strip rotates and moves at the same time, polishing and grinding the spiral surface of the rotor mold cavity back and forth, and fine-machining the spiral surface of the rotor mold cavity to complete the processing process of the rotor mold cavity.

9. The method for processing the metal rotor mold cavity of a screw pump according to claim 8, characterized in that: In the step 4, grinding sand strips with different particle sizes are replaced according to the grinding conditions, and the spiral surface of the rotor mold cavity is ground multiple times to complete the rough machining and semi-finishing processes.

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