Integrated finish machining numerical control grinding machine and machining process thereof

Abstract

The invention relates to the technical field of numerical control combined machining, and discloses an integrated finish machining numerical control grinding machine and a machining technology thereof. A machining system and a numerical control system are further included. The machining system comprises a feeding and discharging module used for automatic feeding and discharging, a clamp module used for clamping a workpiece, a grinding wheel module used for grinding the workpiece, a rolling wheel module used for machining a grinding wheel and a turning module used for machining a rolling wheel. A grinding wheel is mounted on the grinding wheel module, a roller is mounted on the roller module, and a forming cutter is mounted on the turning module; the machine tool body further comprises a stand column arranged on the front side of the workbench. The grinding wheel module is arranged on the stand column. The clamp module and the roller module are arranged on the workbench; the numerical control system is used for controlling the machining system to conduct multi-axis cooperative movement according to a preset control strategy. The invention provides a brand-new integrated forming processing route, and continuous processing with high precision, high efficiency and low cost can be realized.

Description

Technical Field

[0001] The invention relates to the technical field of CNC composite machining, and in particular to an integrated finishing CNC grinding machine and a machining process thereof. Background Art

[0002] High-precision forming blades are very important in modern manufacturing, especially in the fields of aviation, automobiles, mold manufacturing, energy, etc. Take the oil pipe commonly used in the energy industry as an example. Oil pipe refers to various pipelines used for oil and gas extraction, transportation and storage. These pipelines play a vital role in the oil and gas industry, ensuring efficient, safe and economical oil and gas transmission from underground reservoirs to surface facilities and then to end users. When processing oil pipes, the application of forming blades is involved. For example, when processing the internal threads of oil couplings, oil pipe internal thread combing cutters are needed. This kind of tool is a forming blade with a complex tooth structure. It often requires the use of specific machine tools and molds for production, which is costly. In addition, for this kind of tool, its own forming accuracy requirements are high, otherwise it will affect the forming quality of the internal threads of the oil coupling, so that the sealing of the oil pipe joint is not tight, and there is a safety risk.

[0003] In addition, in the prior art, when processing formed blades, it is often necessary to go through a complex process - first, the forming grinding wheel is trimmed and formed on a curve grinder alone, and then the forming grinding wheel is clamped on the grinder to process the formed blade. In this process, the forming grinding wheel needs to be clamped on different machine tools, which is prone to clamping errors and affects the final workpiece processing accuracy. Moreover, after the forming grinding wheel is worn out on the grinder, it needs to be replaced on the curve grinder for trimming. After the trimming is completed, it is put back on the grinder to continue processing the workpiece, involving multiple manual interventions and multiple process conversions, with many error factors and low efficiency. Summary of the invention

[0004] The present invention aims to provide an integrated finishing CNC grinding machine and a processing technology thereof, and proposes a new integrated molding processing route, which can achieve high-precision, high-efficiency, and low-cost continuous processing.

[0005] To achieve the above objectives, the present invention provides the following basic solutions.

[0006] Solution 1 An integrated finishing CNC grinding machine comprises a machine tool body, on which a workbench is provided; a processing system and a CNC system; the processing system comprises a loading and unloading module for automatic loading and unloading, a fixture module for clamping a workpiece, a grinding wheel module for grinding the workpiece, a roller module for processing the grinding wheel, and a turning module for processing the roller; a grinding wheel is mounted on the grinding wheel module, a roller is mounted on the roller module, and a forming tool is mounted on the turning module; The machine tool body also includes a column arranged in front of the workbench; the grinding wheel module is arranged on the column; the fixture module and the roller module are both arranged on the workbench; the loading and unloading module is arranged on one side of the column and close to the workpiece fixture; the turning module is arranged on the other side of the column and close to the roller module; The CNC system is used to control the processing system to perform multi-axis coordinated motion according to a preset control strategy; the preset control strategy includes: based on the target processing program, driving the processing system to operate, and during the control process, correspondingly loading different motion parameters for the loading and unloading module, the fixture module, the grinding wheel module, the roller module and the turning module; the processing steps corresponding to the target processing program include: the first continuous process, the loading and unloading module loads the material - the fixture module clamps the workpiece; the second continuous process, the turning module dresses the roller - the roller module dresses the grinding wheel - the grinding wheel module processes the workpiece; the third continuous process, the fixture module releases the workpiece - the loading and unloading module unloads the material.

[0007] Solution 2 An integrated finishing process, processing a workpiece on an integrated machine tool; the integrated machine tool comprises a machine tool body and a processing system, the machine tool body is provided with a workbench; the processing system comprises a loading and unloading module for automatic loading and unloading, a fixture module for clamping the workpiece, a grinding wheel module for grinding the workpiece, a roller module for processing the grinding wheel and a turning module for processing the roller; a grinding wheel is mounted on the grinding wheel module, a roller is mounted on the roller module, and a forming tool is mounted on the turning module; the machine tool body also comprises a column arranged at the front side of the workbench; the grinding wheel module is arranged on the column; the fixture module and the roller module are both arranged on the workbench; the loading and unloading module is arranged on one side of the column and close to the workpiece fixture; the turning module is arranged on the other side of the column and close to the roller module; The method comprises the following steps: loading materials by the loading and unloading module, clamping the workpiece by the fixture module; dressing the roller by the turning module, dressing the grinding wheel by the roller module, and processing the workpiece by the grinding wheel module; releasing the workpiece by the fixture module, and unloading materials by the loading and unloading module.

[0008] The working principle and advantages of the present invention are: The present invention provides an integrated finishing CNC grinding machine and its processing technology, which can realize the integrated, integrated and automated processing of conventional independent processes, realize the efficient and precise processing of tools with complex shapes, can greatly reduce the processing cost, and realize the efficient mass production of complex tools. The key points are: First, this solution proposes a new integrated molding processing route, which can realize the single-machine integrated batch processing of molding tools. This solution breaks through the front-end process of molding tool processing - the processing and dressing steps of molding rollers and molding grinding wheels are directly integrated into the same group of processes of the same machine tool, forming a new integrated processing route, completing the continuous processing of different processing objects on the same machine tool. A new integrated machine tool is designed to support the above new processing route.

[0009] Specifically, a variety of processing modules are integrated on the main body of the machine tool, which have functions such as automatic loading and unloading, turning, grinding, and dressing. In addition, a detailed structural layout design has been carried out. With the grinding wheel module on the column as the center, the loading and unloading modules and the fixture module are distributed on one side of the grinding wheel module, and the turning module and the roller module are distributed on the other side of the grinding wheel module. Relatively, two non-interfering processing areas are formed on a machine tool base. One area can support the loading and unloading of workpieces and the processing of workpieces by grinding wheels, and the other area can support the processing of rollers by turning modules and the processing of grinding wheels by rollers. And each single side and one side to the other side can form a coherent and non-interfering moving line. On the basis of this machine tool, a series of continuous processes can be realized, including loading and unloading modules loading - fixture modules clamping workpieces, turning modules dressing rollers - roller modules dressing grinding wheels - grinding wheel modules processing workpieces, fixture modules releasing workpieces - loading and unloading modules unloading.

[0010] In particular, compared with the existing forming blade processing technology (such as Fig.11 As shown in the figure, due to the specificity of the structure of the forming blade, if the grinding process is to be adopted, the grinding wheel performing the grinding operation needs to have a tooth structure that matches the target tooth shape of the forming blade. Therefore, in the existing process, the roller for processing the grinding wheel is first made on an independent device using a diamond pen or other technology, and then the roller is used to make the profiling correction of the grinding wheel on another independent device, and then the grinding wheel is used to process the workpiece (forming blade) on another independent device. The above route setting conforms to the conventional logic in the existing process design, that is, one type of processing is arranged on one device, and the processing object of each device is unified. Although this process can meet the basic forming blade processing needs, in actual application, we found that due to the presence of multiple equipment conversions in the route, there are a large number of cumulative errors and difficult-to-avoid human errors. The final quality of the workpiece (grinding wheel) and the workpiece (forming blade to be processed) cannot be guaranteed and is inconvenient to adjust, and the process execution efficiency is low and the processing cost is high.

[0011] In view of this, this solution has made a breakthrough by eliminating equipment conversion and integrating modules and corresponding processes on one device, which can fundamentally reduce human involvement, reduce the introduction of human errors, and naturally reduce some accumulated errors caused by frequent switching of workstations, which also helps to improve processing efficiency. In addition, this solution has modified the processing method for the roller, no longer using the diamond pen dressing method, but using the turning module to directly process it, so that each process has coherent conditions.

[0012] Compared with the existing integrated processing schemes, the patent with publication number CN115007950A discloses a CNC multifunctional milling and grinding integrated machine tool based on composite processing, which can integrate milling and grinding processes. Another example is the patent with publication number CN105499999A, which discloses a CNC internal cylindrical end surface turning and grinding composite machine tool and its processing technology, which can integrate turning and grinding processes. Although the process is combined in this type of scheme, these schemes still do not deviate from the second conventional logic in the existing process design-the processing object of each device is unified, and the integrated processes are all for processing the same object-the workpiece. The integrated processes in this scheme are all for processing different objects, and this processing relationship is progressive (turning guide roller, roller guide grinding wheel, grinding wheel guide workpiece). In the conventional cognition of this field, this progressive processing is often avoided because it involves the continuous switching of processing datum and positioning datum, which will cause large positioning and processing errors (the conventional scheme is divided into equipment and process processing, that is, the continuous progressive processing is also affected by this reason). In actual application, this solution has found that the errors caused by this progressive processing are actually easier to accurately measure and eliminate. Based on the machine tool structure of this solution, the relative position relationship of each module is stable and easy to quantify and control through the control system, which can eliminate errors in time and ensure that each link in the progressive processing maintains a high degree of accuracy.

[0013] This solution introduces a control system, which uses CNC technology to automate the processing, which can greatly reduce the operational complexity of the integrated machine tool, making it easy to use and capable of high-precision, high-efficiency, and low-cost continuous processing. In addition, the design of the control system establishes a foundation for the precise execution of progressive processing and also establishes a foundation for the parallel operation of each continuous process (such as running part of the first continuous process and the second continuous process at the same time).

[0014] The roller module in this solution can act as a real-time dresser. During the processing, if the grinding wheel is worn, the roller module can be directly controlled to sharpen the grinding wheel without replacing the grinding wheel or arranging additional processing operations. In addition, since the same roller module is used for grinding wheel dressing, the tooth shape of the grinding wheel after each dressing can be guaranteed to be almost the same, which improves the consistency of the finished grinding wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of a target tooth shape of a workpiece in Embodiment 1 of an integrated finishing CNC grinding machine and a processing technology thereof of the present invention; Figure 2 It is a first overall structural schematic diagram of an integrated finishing CNC grinding machine and a processing technology embodiment 1 of the present invention; Figure 3 It is a second overall structural schematic diagram of an integrated finishing CNC grinding machine and a processing technology thereof according to Embodiment 1 of the present invention; Figure 4 It is a structural schematic diagram of a fixture module of an integrated finishing CNC grinding machine and a processing method thereof in Embodiment 1 of the present invention; Figure 5 It is a partial perspective schematic diagram of the structure of a fixture module of an integrated finishing CNC grinding machine and a processing method thereof in Embodiment 1 of the present invention; Figure 6 It is a first structural schematic diagram of a turning module of Embodiment 1 of an integrated finishing CNC grinding machine and a processing technology thereof of the present invention; Figure 7 It is a second structural schematic diagram of a turning module of Embodiment 1 of an integrated finishing CNC grinding machine and a processing technology thereof of the present invention; Figure 8 It is a top view of the roller module structure of the first embodiment of an integrated finishing CNC grinding machine and its processing technology of the present invention; Fig. 9 It is an axial side view of the roller module structure of the first embodiment of an integrated finishing CNC grinding machine and its processing technology of the present invention; Fig.10 It is a schematic diagram of the structure of a grinding wheel module of an integrated finishing CNC grinding machine and a processing technology thereof in Embodiment 1 of the present invention; Fig.11 A comparison diagram of the process route of the second embodiment of an integrated finishing CNC grinding machine and its processing technology of the present invention and the existing process route; Fig.12 It is a first overall structural schematic diagram of a third embodiment of an integrated finishing CNC grinding machine and a processing technology thereof of the present invention; Fig.13 It is a second overall structural schematic diagram of a third embodiment of an integrated finishing CNC grinding machine and a processing technology thereof of the present invention; Fig.14 It is a structural schematic diagram of a loading and unloading module and a workpiece turning module of an integrated finishing CNC grinding machine and a processing technology embodiment 3 of the present invention; Fig.15This is a schematic diagram of the first structure of a workpiece turning module of a third embodiment of an integrated finishing CNC grinding machine and a processing technology thereof of the present invention; Fig.16 It is a second structural schematic diagram of a workpiece turning module of Embodiment 3 of an integrated finishing CNC grinding machine and its processing technology of the present invention.

[0016] The symbols in the drawings of the specification include: machine tool body 1, workbench 2, basic guide rail 21, column 3, loading and unloading module 4, mounting frame 41, blade loading tray 42, blade unloading tray 43, auxiliary guide rail 44, manipulator guide rail 45, loading and unloading manipulator 46, and claw 47; Fixture module 5, workpiece mounting groove 51, workpiece positioning block 52, V-shaped positioning block 53, clamping mechanism 54, push rod 55, pressing plate 56; Roller module 6, tool holder bracket 61, roller motor 62, electric spindle 63, roller 64, tool holder 65; Turning module 7, turning base 71, screw 72, Y-axis guide rail 73, Y-axis moving mechanism 74, X-axis guide rail 75, X-axis moving mechanism 76, turning mechanism 77, tool pressing block 78, forming turning tool 79; Grinding wheel module 8, grinding wheel base 81, grinding wheel 82; Workpiece turning module 9 , turning chuck 91 , clamping claw 92 , carrying mechanism 93 , carrying base 94 , carrying position 95 , carrying guide rail 96 , turning base 97 , and workpiece 10 . DETAILED DESCRIPTION

[0017] The following is a further detailed description through specific implementation methods: Embodiment 1 The embodiment is basically as shown in the attached Figure 2 , Figure 3 Shown: An integrated finishing CNC grinding machine includes a machine tool body 1, a processing system and a CNC system.

[0018] A workbench 2 is provided on the machine tool body 1; the processing system includes a loading and unloading module 4 for automatic loading and unloading, a fixture module 5 for clamping a workpiece 10, a grinding wheel module 8 for grinding the workpiece 10, a roller module 6 for processing a grinding wheel 82 and a turning module 7 for processing a roller 64; the grinding wheel module 8 is installed with a grinding wheel 82, the roller module 6 is installed with a roller 64, and the turning module 7 is installed with a forming tool.

[0019] Specifically, the machine tool body 1 also includes a column 3 arranged on the front side of the workbench 2; the grinding wheel module 8 is arranged on the column 3; the fixture module 5 and the roller module 6 are both arranged on the workbench 2; the loading and unloading module 4 is arranged on one side of the column 3 and close to the workpiece 10 fixture; the turning module 7 is arranged on the other side of the column 3 and close to the roller module 6.

[0020] The loading and unloading module 4 includes a mounting frame 41 , a material tray, and a loading and unloading manipulator 46 ; the material tray is used to place the workpiece 10 , and the loading and unloading manipulator 46 is used to clamp and move the workpiece 10 . The material tray and the loading and unloading manipulator 46 are both mounted on the mounting frame 41 .

[0021] Specifically, a tray guide rail is installed on the horizontal surface of the mounting frame 41; the tray is installed on the tray guide rail and is slidably connected thereto. The tray includes an upper blade tray 42 and a lower blade tray 43. In this embodiment, the workpiece 10 to be processed is a blade blank of a thread combing blade for an oil pipe. The target tooth shape to be obtained by processing the blade blank is as follows: Figure 1 A plurality of accommodating grids (not shown) are provided on the blade upper material tray 42 and the blade lower material tray 43, and each accommodating grid can hold a blade blank.

[0022] An auxiliary guide rail 44 is installed on the vertical table of the mounting frame 41, and a manipulator guide rail 45 is installed on the auxiliary guide rail 44, and a servo drive mechanism (such as a servo motor, etc.) drives the manipulator guide rail 45 to move back and forth on the auxiliary guide rail 44. The loading and unloading manipulator 46 is installed on the manipulator guide rail 45 and is slidably connected thereto, and a servo drive mechanism (such as a servo motor, etc.) drives the loading and unloading manipulator 46 to move back and forth up and down on the manipulator guide rail 45. In this embodiment, two claws 47 are provided on the loading and unloading manipulator 46, both of which are used to grab the workpiece 10. In a specific application, each claw 47 can grab a blade blank and transfer it to the fixture module 5; or grab a blade blank from the fixture module 5 and transfer it.

[0023] A basic guide rail 21 is provided on the workbench 2 ; the fixture module 5 and the roller module 6 are both installed on the basic guide rail 21 , and are respectively controlled by a servo drive mechanism to move left and right on the basic guide rail 21 .

[0024] Specifically, Figure 4 and Figure 5 As shown, the clamp module 5 is provided with a workpiece mounting groove 51. In this embodiment, a V-shaped positioning block 53 is fixed in the workpiece mounting groove 51, a workpiece positioning block 52 is fixed at one end of the V-shaped positioning block 53, and a clamping mechanism 54 is provided at the other end of the V-shaped positioning block 53; the clamping mechanism 54 includes a push rod 55 and a pressure plate 56; the push rod 55 is controlled to extend and shorten by a servo drive mechanism.

[0025] like Figure 8 and Fig. 9As shown, the roller module 6 includes a tool holder bracket 61 and a roller motor 62 (a servo drive mechanism for driving the roller 64 to rotate), and the roller 64 is installed on the electric spindle 63 of the roller motor 62. The tool holder 65 of the roller 64 is installed in the tool holder bracket 61 to ensure the stable rotation of the roller 64.

[0026] like Figure 6 and Figure 7 As shown, the turning module 7 includes a turning base 71, an X-axis moving mechanism 76, a Y-axis moving mechanism 74 and a turning mechanism 77. The turning base 71 is fixed on the side of the column 3, and the turning base 71 adopts an L-shaped fixed structure, and is also fixedly connected to the rear surface of the machine tool body 1, which can provide good stability and support for the turning mechanism 77, and help improve the reliability and accuracy of the processing. A Y-axis guide rail 73 is provided on the left and right parts of the upper surface of the turning base 71, and a slot is provided between the two Y-axis guide rails 73 to install a Y-axis drive motor (i.e., a servo drive mechanism for driving the Y-axis moving mechanism 74 to move). The Y-axis moving mechanism 74 is slidably connected to the Y-axis guide rail 73, and is connected to the Y-axis drive motor through a screw rod 72, and the Y-axis drive motor controls the movement of the Y-axis moving mechanism 74 by rotating the screw rod 72.

[0027] An X-axis guide rail 75 is provided on the left and right parts of the upper surface of the Y-axis moving mechanism 74, and a slot is provided between the two X-axis guide rails 75 for installing an X-axis drive motor (i.e., a servo drive mechanism for driving the X-axis moving mechanism 76 to move). The X-axis moving mechanism 76 is slidably connected to the X-axis guide rail 75, and is connected to the X-axis drive motor through a screw rod 72, and the X-axis drive motor controls the movement of the X-axis moving mechanism 76 by rotating the screw rod 72.

[0028] A turning mechanism 77 is installed on the X-axis moving mechanism 76. The turning mechanism 77 includes a tool pressing block 78. In this embodiment, a tool handle 65 is installed at the tool pressing block 78, and a forming turning tool 79 is connected to the tool handle 65.

[0029] like Fig.10 As shown, the grinding wheel module 8 includes a grinding wheel guide rail vertically arranged on the column 3, a grinding wheel base 81 installed on the grinding wheel guide rail, and a grinding wheel 82 installed on the grinding wheel base 81. The grinding wheel base 81 is driven by a servo drive mechanism to move up and down on the grinding wheel guide rail. A grinding wheel shaft is provided on the grinding wheel base 81, and the grinding wheel 82 is connected to the grinding wheel shaft, and the grinding wheel shaft is driven to rotate by a servo drive mechanism.

[0030] The processing system further includes a grating ruler; the grating ruler is provided in multiple groups and is distributed on the guide rails corresponding to the loading and unloading module 4, the grinding wheel module 8, the roller module 6 and the turning module 7. Specifically, the grating ruler includes a measuring ruler and a reading head. In this embodiment, the X-axis guide rail 75 and the Y-axis guide rail 73 of the turning module 7, the auxiliary guide rail 44 and the manipulator guide rail 45 of the loading and unloading module 4, the basic guide rail 21 on the workbench 2, and the grinding wheel guide rail of the grinding wheel module 8 are all equipped with grating rulers. The grating ruler can accurately measure and verify the position of each module, which helps to ensure the high accuracy of motion control.

[0031] The numerical control system is used to control the machining system to perform multi-axis coordinated motion according to a preset control strategy; the preset control strategy includes: based on the target machining program, driving the machining system to operate, and in the control process, correspondingly loading different motion parameters for the loading and unloading module 4, the fixture module 5, the grinding wheel module 8, the roller module 6 and the turning module 7. The motion parameters include: stroke, stroke speed, stroke starting position, single feed amount, total feed amount, feed speed, feed starting position, shaft speed, roller speed, grinding wheel speed, and grinding wheel wear compensation amount.

[0032] The processing steps corresponding to the target processing program include: a first continuous process, the loading and unloading module 4 loads the material - the clamping module 5 clamps the workpiece 10; a second continuous process, the turning module 7 dresses the roller 64 - the roller module 6 dresses the grinding wheel 82 - the grinding wheel module 8 processes the workpiece 10; a third continuous process, the clamping module 5 releases the workpiece 10 - the loading and unloading module 4 unloads the material.

[0033] In this embodiment, the first continuous process and the second continuous process are started synchronously. This arrangement can further improve the processing efficiency of the machine tool.

[0034] The processing steps corresponding to the target processing program also include: a first independent process, the roller module 6 dresses the grinding wheel 82 ; and a second independent process, the grinding wheel module 8 processes the workpiece 10 .

[0035] When the grinding wheel 82 is worn during the processing of the driven processing system, the first independent process is triggered, and the roller module 6 dresses the grinding wheel 82. When the first independent process is completed and the fixture module 5 is ready, the second independent process is triggered, and the grinding wheel module 8 processes the workpiece 10. The fixture module 5 is ready means that the workpiece 10 to be processed is clamped in the fixture module 5.

[0036] In this embodiment, when determining whether the grinding wheel 82 is worn, the following method is included: a dimension detection is performed on the workpiece 10 that has been processed in the previous group. If the tooth profile parameters of the ground blade are changed compared to the tooth profile parameters corresponding to the target tooth profile of the workpiece (such as the difference between the two is greater than the corresponding threshold value), it is determined that the grinding wheel 82 is worn.

[0037] Preferably, a communication module can be added to the numerical control system. When the dimension detection operation is performed manually, the detection personnel can communicate with the communication module through a terminal to feedback the dimension detection result, so that the numerical control system can intelligently determine whether to trigger the first independent process; when the dimension detection operation is automatically detected by the detection machine, a communication connection is established with the detection machine through the communication module to obtain the dimension detection result, so that the numerical control system can intelligently determine whether to trigger the first independent process. With this arrangement, the system can achieve highly intelligent continuous processing and maintain the processing accuracy up to standard.

[0038] When the processing system is driven for processing, it also includes: inserting a pre-tool setting operation in the second continuous process. Specifically, in this embodiment, the pre-tool setting operation is respectively set before the turning module 7 dresses the roller 64, before the roller module 6 dresses the grinding wheel 82, and before the grinding wheel module 8 processes the workpiece 10.

[0039] Taking the pre-tool setting operation set before the turning module 7 trims the roller 64 as an example, the pre-tool setting operation includes: confirming the distance between the forming turning tool 79 on the turning module 7 and the roller 64, moving the turning module 7 close to the roller 64 until the forming turning tool 79 contacts the roller 64, confirming the coordinates of the contact point and saving them as the tool zero position, and completing the tool setting. Preferably, the coordinates of the contact point can be confirmed again to verify the tool setting effect.

[0040] Preferably, when the machining system is driven for machining for the first time, all pre-tool setting operations are selected to be executed, and when the machining system is driven for machining next time, machining is performed according to the zero point positions of each tool confirmed in the first machining.

[0041] The integrated finishing CNC grinding machine provided in this embodiment can realize the integrated, integrated and automated processing of conventional independent processes, realize efficient and precise processing of cutting tools with complex shapes, can greatly reduce processing costs, and realize efficient mass production of complex cutting tools.

[0042] Embodiment 2 like Fig.11As shown, an integrated finishing process is used to process a workpiece 10 on an integrated machine tool; the integrated machine tool includes a machine tool body 1 and a processing system, and a workbench 2 is provided on the machine tool body 1; the processing system includes a loading and unloading module 4 for automatic loading and unloading, a fixture module 5 for clamping the workpiece 10, a grinding wheel module 8 for grinding the workpiece 10, a roller module 6 for processing the grinding wheel 82, and a turning module 7 for processing the roller 64; the grinding wheel module 8 is installed with a grinding wheel 82, the roller module 6 is installed with a roller 64, and the turning module 7 is installed with a forming tool; the machine tool body 1 also includes a column 3 arranged at the front side of the workbench 2; the grinding wheel module 8 is arranged on the column 3; the fixture module 5 and the roller module 6 are both arranged on the workbench 2; the loading and unloading module 4 is arranged on one side of the column 3 and close to the workpiece 10 fixture; the turning module 7 is arranged on the other side of the column 3 and close to the roller module 6.

[0043] In this embodiment, the structural arrangement of the machine tool body 1 and the processing system is the same as that of the machine tool body 1 and the processing system described in the first embodiment.

[0044] The process includes the following steps: the loading and unloading module 4 loads the material, the fixture module 5 clamps the workpiece 10; the turning module 7 trims the roller 64, the roller module 6 trims the grinding wheel 82, and the grinding wheel module 8 processes the workpiece 10; the fixture module 5 releases the workpiece 10, and the loading and unloading module 4 unloads the material.

[0045] Before the turning module 7 trims the roller 64, the wire cutting process is performed on the forming tool on the turning module 7. In this embodiment, the existing wire cutting process is directly selected, which has a high operating efficiency and can quickly complete the processing of the forming tool, so that the forming turning tool 79 has the blade shape required for processing the roller 64 and the cost is relatively low.

[0046] Specifically, the workpiece 10 to be processed is placed in the storage compartment of the blade loading tray 42 of the loading and unloading module 4. The loading and unloading manipulator 46 grabs a group of workpieces 10 (a blank of a blade) from the storage compartment and puts them into the fixture module 5 (specifically puts them into the workpiece mounting groove 51 of the fixture module 5 and places them on the V-shaped positioning block 53). The fixture module 5 positions and clamps the workpiece 10 (the clamping mechanism 54 of the fixture module 5 extends its push rod 55 to clamp the workpiece 10, and cooperates with the V-shaped positioning block 53 and the workpiece positioning block 52 at the other end to complete the positioning and clamping of the workpiece 10). At the same time, the forming turning tool 79 is pre-installed on the turning module 7, and the turning module 7 is moved close to the roller 64 on the roller module 6. The forming turning tool 79 is used to trim the shape of the roller 64 so that the required tooth shape is formed on the roller 64. The turning module 7 is reset. The roller module 6 is moved to be close to the grinding wheel module 8 (the grinding wheel module 8 is moved synchronously to cooperate with it), and the shape of the grinding wheel 82 is trimmed by the roller 64, so that the desired tooth shape is formed on the grinding wheel 82. The roller module 6 is reset. The fixture module 5 is moved (the grinding wheel module 8 is moved synchronously to cooperate with it), so that the workpiece 10 is close to the grinding wheel 82 (that is, it enters the processing range of the grinding wheel 82), and the grinding wheel 82 is used to grind the workpiece 10, and the target tooth shape is processed on the workpiece 10, completing the integrated continuous processing of this group of workpieces 10.

[0047] After the processing is completed, the clamping module 5 first cancels the clamping of the workpiece 10, and then the loading and unloading robot 46 grabs the processed workpiece 10 from the clamping module 5 and moves it to the blade unloading tray 43. Then the next group of workpieces 10 are processed.

[0048] The integrated finishing process provided in this embodiment has achieved a breakthrough in combining independent processes, which can greatly improve the processing efficiency and reduce the processing cost.

[0049] Embodiment 3 like Fig.12 and Fig.13 As shown, the integrated finishing CNC grinding machine, based on the first embodiment, the loading and unloading module 4 also includes a workpiece turning module 9, such as Fig.14 shown.

[0050] The workpiece flip module 9 is mounted on the horizontal surface of the mounting frame 41. Specifically, the workpiece flip module 9 includes a flip chuck 91 and a bearing mechanism 93 provided on a flip base 97. The flip chuck 91 is mounted on one side of the flip base 97, and the bearing mechanism 93 is mounted on the other side adjacent to the side, and the axis of the flip chuck 91 is relatively perpendicular to the central axis of the bearing mechanism 93.

[0051] like Fig.15 and Fig.16As shown, the flip chuck 91 is provided with a clamping claw 92, and the rotation of the flip chuck 91 as a whole and the movement of the clamping claw 47 are controlled by a servo drive mechanism. The bearing mechanism 93 includes a bearing guide rail 96 and a bearing base 94 provided on the bearing guide rail 96; the bearing base 94 is driven by a servo drive mechanism to move on the bearing guide rail 96. The top of the bearing base 94 is provided with a bearing position 95 for placing the workpiece 10. The bearing position 95 has openings at both ends, so that the clamping claw 92 and the bearing mechanism 93 can mutually receive the workpiece 10. In this embodiment, the cross section of the bearing position 95 is triangular, which is consistent with the shape of the workpiece 10 (blade blank of the internal thread combing blade of the oil pipe). With this structure, when the workpiece 10 is placed in the bearing position 95, one of its surfaces to be processed can be kept horizontal and upward, so that the workpiece 10 can be placed stably and the flip chuck 91 can be conveniently set to a flip angle.

[0052] Since the two adjacent sides of the internal thread combing blade of the oil pipe need to be processed with tooth profiles, after the tooth profile processing on one side is completed, the position of the workpiece 10 needs to be adjusted (rotated 120 degrees) to facilitate the processing of the other side. Therefore, when the present grinder is used, after the tooth profile processing on one side is completed, when the workpiece 10 needs to be turned over, the clamping module 5 first cancels the clamping of the workpiece 10, and then the loading and unloading module 4 takes out the workpiece 10 from the clamping module 5 and transfers it to the bearing position 95 of the workpiece turning module 9. The loading and unloading module 4 is removed, the workpiece 10 is clamped by the clamping claw 92, and then the bearing mechanism 93 is removed (even if the bearing base 94 moves up and down on the bearing guide rail 96 until it does not hinder the movement of the turning chuck 91). The turning chuck 91 is rotated 180°, so that the other surface to be processed of the workpiece 10 is horizontally facing upward. The bearing mechanism 93 is reset (even if the bearing base 94 moves up on the bearing guide rail 96 until it fully supports the workpiece 10), and the turning of the workpiece 10 is completed. The loading and unloading module 4 then clamps the turned workpiece 10 and moves it to the fixture module 5 for the next stage of processing.

[0053] Correspondingly, in the control system, the processing steps corresponding to the target processing program also include: a fourth continuous process, the clamp module 5 releases the workpiece 10 - the loading and unloading module 4 moves the workpiece 10 - the workpiece flipping module 9 flips the workpiece 10 - the loading and unloading module 4 moves the workpiece 10 - the clamp module 5 clamps the workpiece 10.

[0054] The integrated finishing CNC grinding machine provided in this embodiment, compared with the first embodiment, is specially provided with a workpiece turning module 9 and its corresponding processing program, which can complete the continuous processing of different surfaces of the blade in an integrated manner, and can further improve the production efficiency and reduce the production cost.

[0055] The above is only an embodiment of the present invention. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field are aware of all the common technical knowledge in the technical field of the invention before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement the scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for the ordinary technicians in the relevant field to implement this application. It should be pointed out that for the technicians in this field, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. An integrated finishing CNC grinding machine, comprising a machine tool body, on which a workbench is provided; characterized in that: It also includes a processing system and a numerical control system; the processing system includes a loading and unloading module for automatic loading and unloading, a fixture module for clamping workpieces, a grinding wheel module for grinding workpieces, a roller module for processing grinding wheels, and a turning module for processing rollers; the grinding wheel module is equipped with a grinding wheel, the roller module is equipped with a roller, and the turning module is equipped with a forming tool; The machine tool body also includes a column arranged in front of the workbench; the grinding wheel module is arranged on the column; the fixture module and the roller module are both arranged on the workbench; the loading and unloading module is arranged on one side of the column and close to the workpiece fixture; the turning module is arranged on the other side of the column and close to the roller module; The numerical control system is used to control the machining system to perform multi-axis coordinated motion according to a preset control strategy; The preset control strategy includes: based on the target processing program, driving the processing system to operate, and in the control process, loading different motion parameters for the loading and unloading module, the fixture module, the grinding wheel module, the roller module and the turning module; the processing steps corresponding to the target processing program include: the first continuous process, the loading and unloading module loads the material - the fixture module clamps the workpiece; the second continuous process, the turning module dresses the roller - the roller module dresses the grinding wheel - the grinding wheel module processes the workpiece; the third continuous process, the fixture module releases the workpiece - the loading and unloading module unloads the material.

2. The integrated finishing CNC grinding machine according to claim 1, characterized in that: The first continuous process and the second continuous process are started synchronously.

3. The integrated finishing CNC grinding machine according to claim 1, characterized in that: The loading and unloading module includes a material tray and a loading and unloading robot; the material tray is used to place workpieces, and the loading and unloading robot is used to clamp and move the workpieces.

4. The integrated finishing CNC grinding machine according to claim 1, characterized in that: The processing steps corresponding to the target processing program also include: a first independent process, a roller module trims the grinding wheel; a second independent process, a grinding wheel module processes the workpiece.

5. The integrated finishing CNC grinding machine according to claim 4, characterized in that: When the grinding wheel is worn during machining in the driven machining system, the first independent process is triggered and the roller module dresses the grinding wheel.

6. The integrated finishing CNC grinding machine according to claim 1, characterized in that: The processing system also includes a grating ruler; the grating ruler is provided in multiple groups and is distributed on the guide rails corresponding to the loading and unloading module, the grinding wheel module, the roller module and the turning module.

7. The integrated finishing CNC grinding machine according to claim 1, characterized in that: The motion parameters include: stroke, stroke speed, stroke starting position, single feed amount, total feed amount, feed speed, feed starting position, shaft speed, roller speed, grinding wheel speed, and grinding wheel wear compensation amount.

8. The integrated finishing CNC grinding machine according to claim 1, characterized in that: When the driving processing system is processing, it also includes: inserting a pre-tool setting operation into the second continuous process.

9. An integrated finishing process, characterized in that: Processing a workpiece on an integrated machine tool; the integrated machine tool comprises a machine tool body and a processing system, and a workbench is provided on the machine tool body; the processing system comprises a loading and unloading module for automatic loading and unloading, a fixture module for clamping the workpiece, a grinding wheel module for grinding the workpiece, a roller module for processing the grinding wheel, and a turning module for processing the roller; a grinding wheel is mounted on the grinding wheel module, a roller is mounted on the roller module, and a forming tool is mounted on the turning module; the machine tool body also comprises a column arranged at the front side of the workbench; the grinding wheel module is arranged on the column; the fixture module and the roller module are both arranged on the workbench; the loading and unloading module is arranged on one side of the column and close to the workpiece fixture; the turning module is arranged on the other side of the column and close to the roller module; The method comprises the following steps: loading materials by the loading and unloading module, clamping the workpiece by the fixture module; dressing the roller by the turning module, dressing the grinding wheel by the roller module, and processing the workpiece by the grinding wheel module; releasing the workpiece by the fixture module, and unloading materials by the loading and unloading module.

10. The integrated finishing process according to claim 9, characterized in that: Before the turning module dresses the roller, the forming tool on the turning module is processed by wire cutting.

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