Processing method and processing system for rear axle box of bulldozer

Abstract

The invention provides a bulldozer rear axle box machining method and system, and belongs to the technical field of rear axle box machining. The bulldozer rear axle box machining method comprises the steps that an original workpiece is fixed to a first tool, and the first tool is fixed to a zero point positioning system; the machine tool system is used for machining the first opposite face of the original workpiece, and a primary workpiece is obtained; the primary workpiece is replaced and fixed to a second tool from the first tool, and the second tool is fixed to a zero point positioning system; measuring the reference surface by using a Renishaw measurement system to obtain reference surface data, calculating the zero point of the primary workpiece according to the reference surface data, and further creating a reference coordinate system; according to the reference coordinate system, a machine tool system is used for machining the second opposite face and the third opposite face of the primary workpiece, and a rear axle box finished product workpiece is obtained. The rear axle box machining process is simplified, the zero point positioning system and the Renishaw measuring system are introduced to replace manual positioning and alignment, and the rear axle box machining precision and efficiency are improved.

Description

Technical Field

[0001] The invention relates to a bulldozer rear axle box processing method and processing system, belonging to the technical field of rear axle box processing. Background Art

[0002] In traditional rear axle box processing, since the rear axle box is a 6-sided box-shaped machined part, it is mostly processed through multiple processes such as gantry milling, drilling by a drilling machine and boring by a boring machine; or directly using a gantry plus a drilling machine or a boring machine plus a drilling machine; the above processing methods all require the workpiece to be transferred and flipped multiple times, which requires multiple alignments during processing, and the traditional processing method uses a center or trial cutting method to align the workpiece, which is not only inefficient and low-precision, but also limited by the skill level of the on-site operator.

[0003] In addition, in the traditional processing procedures, the measurement of the processed holes is achieved by tools such as calipers or internal micrometers. The accuracy of the test results depends on the accuracy of the measuring instrument and the experience level of the workers. In addition, the position dimensions such as verticality and parallelism on the workpiece cannot be measured and confirmed. The final measurement can only be carried out after the workpiece is processed. However, measuring after completion will cause problems. The workpiece needs to be repaired, the insufficient size needs to be re-welded, and even the workpiece that cannot be repaired can only be scrapped, thus wasting a lot of manpower and resources.

[0004] In summary, the existing rear axle box processing technology not only has problems such as many processes, poor alignment accuracy and low production efficiency, but also urgently needs a new and efficient processing method to reduce manual intervention, so as to effectively avoid the problem of poor product quality. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a method for processing a bulldozer rear axle box. The method greatly improves the processing accuracy and efficiency of the rear axle box by simplifying the processing flow of the bulldozer rear axle box and introducing a zero point positioning system and a Renishaw measurement system to replace manual positioning and alignment.

[0006] To achieve the above object, the present invention is implemented by adopting the following technical solutions: In a first aspect, the present invention provides a method for processing a rear axle box of a bulldozer, comprising: The original workpiece to be processed is fixed to the first tooling, and the first process is performed, including: fixing the first tooling to the zero-point positioning system; using the machine tool system to process the first relative surface of the original workpiece to obtain the primary workpiece of the rear axle box.

[0007] The rear axle box primary workpiece is replaced and fixed from the first tooling to the second tooling, and the second process is performed, including: The second tooling is fixed to the zero point positioning system; the reference surface after the first relative surface is processed is measured by using a Renishaw measurement system to obtain reference surface data; the zero point of the rear axle box primary workpiece is calculated by using the Renishaw measurement system according to the reference surface data, and a reference coordinate system is created; the second relative surface and the third relative surface of the rear axle box primary workpiece are processed by using a machine tool system according to the reference coordinate system to obtain a finished rear axle box workpiece.

[0008] In combination with the first aspect, optionally, before guiding the machine tool system to process the second relative surface and the third relative surface of the primary workpiece of the rear axle box according to the reference coordinate system, it also includes: using a Renishaw measurement system to detect whether the dimensional deviation of the primary workpiece of the rear axle box exceeds a preset allowable range. In response to the Renishaw measurement system detecting that the primary workpiece of the rear axle box has a dimensional deviation that exceeds the preset allowable range, the machine tool system stops the program running and issues an alarm, guiding the operator to correct relevant parameters according to the dimensional deviation detected by the Renishaw measurement system.

[0009] In combination with the first aspect, optionally, the processing of the first relative surface of the original workpiece by the machine tool system and the processing of the second relative surface and the third relative surface of the rear axle box primary workpiece by the machine tool system include: using a Renishaw measurement system to measure the size of the surface, groove and aperture to be processed during the processing to assist the machine tool system in determining the processing position and processing size; and using the Renishaw measurement system to perform dimensional deviation inspection on the processed surfaces, grooves and holes, and in response to the dimensional deviation being within a preset allowable deviation range, completing the processing of the current surface, groove or hole, and in response to the dimensional deviation exceeding the preset allowable deviation range, guiding the machine tool system to correct the size of the current surface, groove or hole according to the detected dimensional deviation.

[0010] In combination with the first aspect, optionally, the processing of the first relative surface of the original workpiece by the machine tool system and the processing of the second relative surface and the third relative surface of the rear axle box primary workpiece by the machine tool system also include: monitoring the status of the tools included in the machine tool system by the tool detection system; in response to the tool detection system detecting that the tool is damaged, the tool is worn beyond a preset degree, or the machine tool load is abnormal, the machine tool system stops the program running and issues an alarm.

[0011] In combination with the first aspect, optionally, the use of a machine tool system to process the second relative surface and the third relative surface of the primary workpiece of the rear axle box includes: adopting a small-aperture workpiece reverse scraping and stop operation method, and cutting holes of different apertures or different thicknesses through a reverse scraper equipped by the machine tool system.

[0012] In a second aspect, the present invention provides a bulldozer rear axle box processing system, comprising: a first tooling: used to fix an original workpiece to be processed; a second tooling: used to fix a primary workpiece of the rear axle box; a machine tool system: used to process a first relative surface of the original workpiece in a first process to obtain a primary workpiece of the rear axle box, and to process a second relative surface and a third relative surface of the primary workpiece of the rear axle box in a second process according to a reference coordinate system to obtain a finished workpiece of the rear axle box; a zero point positioning system: used to realize zero point positioning of the first tooling and the second tooling; a Renishaw measurement system: used to measure the reference surface after processing the first relative surface to obtain reference surface data, and to calculate the zero point of the primary workpiece of the rear axle box according to the reference surface data, and to create the reference coordinate system.

[0013] In combination with the second aspect, optionally, a positioning structure corresponding to the locking device of the zero-point positioning system is provided at the bottom of the first tooling and the second tooling; a fixing threaded hole corresponding to the position of the preset pull-down threaded hole in the first relative surface is provided on the fixing table of the second tooling, which is used to fix the plane where the preset pull-down threaded hole in the primary workpiece of the rear axle box is located on the fixing table of the second tooling by bolts.

[0014] In combination with the second aspect, optionally, the bulldozer rear axle box processing system also includes: a tool detection system; used to monitor the status of the tools included in the machine tool system; the machine tool system is also used to: stop the program running and issue an alarm in response to the tool detection system detecting that the tool is damaged, the tool is worn beyond a preset degree, or the machine tool load is abnormal.

[0015] In combination with the second aspect, optionally, the machine tool system includes two workbenches, and the two workbenches are used to perform the first process and the second process respectively.

[0016] In combination with the second aspect, optionally, the Renishaw measurement system is further used to: detect whether the dimensional deviation of the primary workpiece of the rear axle box exceeds a preset allowable range; The machine tool system is also used for: in response to the Renishaw measurement system detecting that the primary workpiece of the rear axle box has a dimensional deviation that exceeds a preset allowable range, stopping the program running and issuing an alarm, and guiding the operator to correct relevant parameters according to the dimensional deviation detected by the Renishaw measurement system.

[0017] Compared with the prior art, the present invention has the following beneficial effects: (1) The bulldozer rear axle box processing method provided by the present invention adopts a two-step process, and the two steps are completed on special tooling respectively. The first step completes the processing of the first relative surface, and the second step takes the first relative surface completed in the first step as a reference to complete the processing of the remaining four surfaces of the rear axle box at one time. In the process of replacing the tooling, the zero-point positioning system is used as a link between the machine tool system and the tooling to achieve rapid positioning of the tooling, so that the processing reference and design reference of the two processes are consistent. At the same time, after the second step is completed and positioned and fixed, the Renishaw measurement system is used for automatic alignment to ensure that the relative position accuracy between the various surfaces of the rear axle box can meet the requirements. By optimizing the processing flow of the rear axle box, the processing efficiency is improved, and the processing accuracy and product quality are guaranteed by the zero-point positioning system and the Renishaw measurement system; (2) The bulldozer rear axle box processing method provided by the present invention uses the Renishaw measurement system to detect the dimensional deviation of the primary workpiece of the rear axle box that has completed the first relative surface processing. If the dimensional deviation of the primary workpiece of the rear axle box processed in the first process exceeds the preset allowable range, the operator can correct the relevant parameters according to the dimensional deviation detected by the Renishaw measurement system. At the same time, the Renishaw measurement system is also used to measure the size of the surface, groove and aperture to be processed during the processing process, and to inspect the size of the processed surface, groove and aperture. The product qualification rate is greatly improved, and the waste of resources caused by dimensional deviation is avoided; (3) The second tooling in the bulldozer rear axle box processing system provided by the present invention adopts a bottom pull-down fixing method to replace the traditional side clamping fixing method. In the second process, by setting the fixing point of the rear axle box primary workpiece to the fixing table of the second tooling and the first opposite surface of the processed rear axle box primary workpiece, the processing of the remaining four surfaces of the rear axle box can be completed at one time in the second process, which greatly simplifies the processing flow of the rear axle box and improves the processing efficiency of the workpiece. (4) The bulldozer rear axle box processing system provided by the present invention adopts a double-station machine tool system. Each process is carried out at a different station, so that seamless processing can be achieved. After one process is completed, the processing of another process can be achieved by simply exchanging workbenches, avoiding waiting time for changing parts, improving processing efficiency and reducing operating intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a flow chart of the bulldozer rear axle box processing method provided in Example 1 of the present invention; Figure 2 This is a schematic diagram of the zero point positioning system provided in Example 1 of the present invention; Figure 3 A physical diagram of the Renishaw measurement system provided in Example 1 of the present invention; Figure 4This is the processing effect of Example 4 of the present invention without using a vibration-resistant boring tool; Figure 5 This is the processing effect after using the vibration-resistant boring tool in Example 4 of the present invention; Figure 6 This is a real picture of the reverse scraper provided in Example 4 of the present invention. DETAILED DESCRIPTION

[0019] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices. The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Example 1

[0020] This embodiment provides a method for processing a rear axle box of a bulldozer. Figure 1 As shown, the following steps are included: Step 1: Fix the original workpiece to be processed to the first tooling, perform the first process, complete the processing of the first opposite surface of the rear axle box, and obtain the primary workpiece of the rear axle box.

[0021] Specifically, the first process includes: Step 11: Fix the first tooling to the zero point positioning system.

[0022] Specifically, the first tool is a special tool for processing the rear axle box, and the zero-point positioning is achieved through the zero-point positioning system. The bottom of the first tool is provided with a positioning structure corresponding to the locking device of the zero-point positioning system.

[0023] As is known, the zero point positioning system is a unique positioning and locking device that can keep the zero point of the workpiece unchanged from one station to another, from one process to another, or from one machine tool to another. By integrating high-precision positioning and reliable clamping and high-efficiency tightening, it saves the auxiliary time of re-aligning the zero point, ensures the continuity of work, and improves work efficiency.

[0024] like Figure 2As shown, in this embodiment, a coarse guide, a positioner, an auxiliary support, a positioning key and a hand slide valve are arranged on the base plate of the zero-point positioning system. Among them, the coarse guide, the positioner and the auxiliary support are used as locking devices, and the hand slide valve is used for air intake unlocking.

[0025] Step 12: Use a machine tool system to process the first relative surface of the original workpiece to obtain a primary workpiece of the rear axle box.

[0026] Specifically, the machine tool system performs milling, drilling and boring processes on the original workpiece; during the processing, use Figure 3 The Renishaw measurement system shown measures the sizes of the surfaces, grooves and holes to be processed to assist the machine tool system in determining the processing position and processing size; and uses the Renishaw measurement system to check the dimensional deviation of the processed surfaces, grooves and holes. If the dimensional deviation is within the preset allowable deviation range, the processing of the current surface, groove or hole is completed. If the dimensional deviation exceeds the preset allowable deviation range, the machine tool system is guided to correct the size of the current surface, groove or hole according to the detected dimensional deviation.

[0027] In addition, during the processing of the first step, a tool detection system is used to monitor the status of the tools included in the machine tool system. If the tool detection system detects that the tool is damaged, the tool is worn beyond a preset level, or the machine tool load is abnormal, the machine tool system stops the program and issues an alarm.

[0028] It should be noted that among the six faces of the rear axle box, one face is preset as the design reference face of the second tooling, and this face contains fixing holes corresponding to the second tooling fixing table, which is used to fix the primary workpiece of the rear axle box on the second tooling fixing table by a bottom pull-down fixing method in the second process. This face and its opposite face are the first opposite faces, which are processed in the first process. The other two groups of opposite faces are the second opposite faces and the third opposite faces, which are not distinguished and are all processed in the second process.

[0029] Step 2: Replace and fix the primary workpiece of the rear axle box from the first tooling to the second tooling.

[0030] Step 3: After replacing the tooling, execute the second process to complete the processing of the second opposing surface and the third opposing surface at one time to obtain the finished workpiece of the rear axle box.

[0031] Specifically, the second process includes: Step 31: Fix the second tooling to the zero point positioning system.

[0032] Specifically, the bottom of the second tool is also provided with a positioning structure corresponding to the locking device of the zero-point positioning system, and the zero-point positioning is also achieved through the zero-point positioning system.

[0033] Step 32: Use the Renishaw measurement system to check whether the dimensional deviation of the rear axle box primary workpiece exceeds the preset allowable range.

[0034] Specifically, if the Renishaw measurement system detects that the primary workpiece of the rear axle box has a dimensional deviation that exceeds the preset allowable range, the machine tool system stops the program and issues an alarm, guiding the operator to correct the relevant parameters based on the dimensional deviation detected by the Renishaw measurement system.

[0035] Step 33: Use a Renishaw measurement system to automatically measure the reference surface of the first relative surface after machining to obtain reference surface data.

[0036] Step 34: Calculate the zero point of the rear axle box primary workpiece using the Renishaw measurement system based on the reference surface data and create a reference coordinate system.

[0037] Step 35: Perform one-time processing of the second opposing surface and the third opposing surface of the primary workpiece of the rear axle box by using a machine tool system according to the reference coordinate system to obtain a finished workpiece of the rear axle box.

[0038] Specifically, the machine tool system performs milling, drilling, boring and back-scraping processes on the primary workpiece of the rear axle box; wherein the back-scraping process includes: adopting the back-scraping stop operation method of small-diameter workpieces, and cutting holes of different diameters or thicknesses through the back-scraper equipped by the machine tool system.

[0039] During the machining process, the Renishaw measurement system is used to measure the size of the surfaces, grooves and apertures to be machined, so as to assist the machine tool system in determining the machining position and size. The Renishaw measurement system is also used to check the dimensional deviation of the machined surfaces, grooves and holes. If the dimensional deviation is within the preset allowable deviation range, the machining of the corresponding surfaces, grooves and apertures is completed. If the dimensional deviation exceeds the preset allowable deviation range, the machine tool system is guided to make dimensional corrections based on the detected dimensional deviation.

[0040] In addition, during the processing of the second step, a tool detection system is used to monitor the status of the tools included in the machine tool system. If the tool detection system detects that the tool is damaged, the tool is worn beyond a preset level, or the machine tool load is abnormal, the machine tool system stops the program and issues an alarm. Example 2

[0041] This embodiment provides a bulldozer rear axle box processing system, including: The first tooling: used to fix the original workpiece to be processed.

[0042] The second tooling: used to fix the primary workpiece of the rear axle box.

[0043] Machine tool system: used for processing the first relative surface of the original workpiece in the first process to obtain a primary workpiece of the rear axle box, and for processing the second relative surface and the third relative surface of the primary workpiece of the rear axle box in the second process according to the reference coordinate system to obtain a finished workpiece of the rear axle box.

[0044] Zero point positioning system: used to achieve zero point positioning of the first tooling and the second tooling.

[0045] Renishaw measurement system: used for measuring the reference surface after the first relative surface is machined, obtaining reference surface data, calculating the zero point of the primary workpiece of the rear axle box according to the reference surface data, and establishing the reference coordinate system.

[0046] A tool detection system; used for monitoring the status of the tools included in the machine tool system; The machine tool system is also used to: in response to the tool detection system detecting that the tool is damaged, the tool is worn beyond a preset degree, or the machine tool load is abnormal, stop the program running and issue an alarm.

[0047] The Renishaw measurement system is also used to: detect whether the dimensional deviation of the primary workpiece of the rear axle box exceeds a preset allowable range; The machine tool system is also used for: in response to the Renishaw measurement system detecting that the primary workpiece of the rear axle box has a dimensional deviation that exceeds a preset allowable range, stopping the program running and issuing an alarm, and guiding the operator to correct relevant parameters according to the dimensional deviation detected by the Renishaw measurement system. Example 3

[0048] Based on Example 2, this example provides a method for fixing the second tooling and the zero-point positioning system.

[0049] The second tooling is a special tooling for processing the rear axle box. When manufacturing the second tooling of the rear axle box, a threaded hole is selected in the first opposite surface of the rear axle box as a preset pull-down threaded hole, and according to the specific position of the selected pull-down threaded hole in the rear axle box to be manufactured, a fixed threaded hole with the same aperture is opened at the corresponding position of the second tooling.

[0050] After the first process is completed, the first opposite surface of the rear axle box is manufactured and the pull-down threaded hole has been formed. In the process of replacing the tooling, the plane where the preset pull-down threaded hole in the primary workpiece of the rear axle box is located is directly contacted with the fixing platform of the second tooling, and the pull-down threaded hole on the primary workpiece of the rear axle box is fixed with the fixing threaded hole of the second tooling by bolts, and the auxiliary clamping device applies pressure downward from the other processed surface to achieve stable fixing of the primary workpiece of the rear axle box on the fixing platform of the second tooling. Example 4

[0051] On the basis of Example 3, this example provides an improved structure of a machine tool system in a bulldozer rear axle box processing system, including: the machine tool system includes two workbenches, and the two workbenches are used to execute the first process and the second process respectively.

[0052] Specifically, in the traditional processing, when a horizontal machining center is used for processing, there is only one workbench, and only one rear axle box or one process in the rear axle box can be processed at a time; when different types of workpieces or different processes are processed, mold changes are required, and this process wastes 1-2 hours; in order to reduce the mold changes of the rear axle box and the secondary clamping of the workpiece, a double-station planer machining center is introduced, and each process tooling is on a different workbench, so that seamless processing can be achieved. After one process is completed, the processing of another process can be achieved by simply exchanging workbenches, avoiding the trouble of changing parts in the middle and waiting time, improving work efficiency while reducing the labor intensity of employees changing molds. Example 5

[0053] Based on Example 2, this example provides an improved tool for a bulldozer rear axle box processing system.

[0054] The tools configured in the machine tool system include: powder metallurgy drills, extrusion taps, thread milling cutters and vibration-resistant boring cutters.

[0055] In the traditional processing process, ordinary cutting tools are used. Although these cutting tools are cheap, they have poor wear resistance and heat resistance. In order to ensure the processing quality, operators need to frequently replace cutting tools and blades, which not only affects the processing dimensional accuracy of the workpiece to a certain extent, but also greatly affects the production efficiency.

[0056] Therefore, in this embodiment, the machine tool system provides a new type of alloy tool with high strength, high hardness and high wear resistance. Compared with the life of 5-10 meters of traditional tools, the life of the new tools can reach 20-30 meters, which reduces the tool sharpening time and tool changing time and saves tool costs.

[0057] Specifically, special thread milling cutters are used for large diameter threads above M30 to eliminate the risk of broken taps.

[0058] For hole diameters exceeding ￠80, if the tool cutting depth exceeds 5 times the hole diameter, a vibration-resistant boring tool should be used for boring.

[0059] In order to alleviate the vibration of the rear axle box processing, an extended anti-vibration tool is used. When cutting with the extended anti-vibration boring tool, the vibration can be effectively reduced by 75%-80%, achieving high-speed and large-cutting depth processing, and ensuring the shape tolerance and position tolerance of the hole. In addition, Figure 4 The figure shows the machining effect without using a vibration-resistant boring tool. Figure 5 The processing effect without using the vibration-resistant boring tool is shown in the figure. By comparison, it can be seen that the processing roughness is greatly improved by using the vibration-resistant boring tool.

[0060] The second step of rear axle box processing requires countersinking of the gasket mounting holes on the left and right shells. The traditional processing method requires changing the process to a drilling machine for processing or using a white steel knife on a boring machine for processing. This is not only inefficient, but also heavily dependent on the operator's technical level, and the depth and counterscraping speed cannot be controlled.

[0061] In this embodiment, Figure 6 As shown, a special reverse scraper is used, and the program automatically completes the processing without manual intervention. The special reverse scraper can not only adapt to different hole diameters, but also adapt to cutting processing of different thicknesses according to programming, realizing automated processing while solving the problem of uneven processing thickness of the left and right shells of the rear axle box.

[0062] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for processing a rear axle box of a bulldozer, characterized in that: include: Fix the original workpiece to be processed to the first fixture and perform the first process, including: Fixing the first tool to the zero-point positioning system; Processing the first opposite surface of the original workpiece by using a machine tool system to obtain a primary workpiece of a rear axle box; The rear axle box primary workpiece is replaced and fixed from the first tooling to the second tooling, and the second process is performed, including: fixing the second tool to the zero point positioning system; Using a Renishaw measurement system to measure the reference surface of the first opposing surface after machining to obtain reference surface data; Calculate the zero point of the primary workpiece of the rear axle box using the Renishaw measurement system according to the reference surface data, and create a reference coordinate system; The second opposing surface and the third opposing surface of the rear axle box primary workpiece are processed by a machine tool system according to the reference coordinate system to obtain a rear axle box finished workpiece.

2. The bulldozer rear axle box processing method according to claim 1, characterized in that: Before guiding the machine tool system to process the second opposite surface and the third opposite surface of the primary workpiece of the rear axle box according to the reference coordinate system, the method further includes: using a Renishaw measurement system to detect whether the size deviation of the primary workpiece of the rear axle box exceeds a preset allowable range; In response to the Renishaw measurement system detecting that the primary workpiece of the rear axle box has a dimensional deviation that exceeds the preset allowable range, the machine tool system stops the program and issues an alarm, guiding the operator to correct the relevant parameters based on the dimensional deviation detected by the Renishaw measurement system.

3. The bulldozer rear axle box processing method according to claim 2, characterized in that: The processing of the first relative surface of the original workpiece by the machine tool system and the processing of the second relative surface and the third relative surface of the rear axle box primary workpiece by the machine tool system include: During the machining process, Renishaw measurement systems are used to measure the size of the surfaces, grooves and holes to be machined, to assist the machine tool system in determining the machining position and size. The Renishaw measurement system is used to check the dimensional deviation of the machined surfaces, slots and holes. If the dimensional deviation is within the preset allowable deviation range, the machining of the current surface, slot or hole is completed. If the dimensional deviation exceeds the preset allowable deviation range, the machine tool system is guided to correct the size of the current surface, slot or hole according to the detected dimensional deviation.

4. The bulldozer rear axle box processing method according to claim 2, characterized in that: The method of processing the first relative surface of the original workpiece by the machine tool system and processing the second relative surface and the third relative surface of the primary workpiece of the rear axle box by the machine tool system also includes: monitoring the status of the tools included in the machine tool system by the tool detection system, and in response to the tool detection system detecting that the tool is damaged, the tool is worn beyond a preset degree, or the machine tool load is abnormal, the machine tool system stops the program running and issues an alarm.

5. The bulldozer rear axle box processing method according to claim 2, characterized in that: The method of processing the second relative surface and the third relative surface of the primary workpiece of the rear axle box by using the machine tool system includes: adopting the reverse scraping stop operation method of small-diameter workpieces, and cutting holes of different diameters or thicknesses through the reverse scraper equipped by the machine tool system.

6. A bulldozer rear axle box processing system, characterized in that: include: First fixture: used to fix the original workpiece to be processed; The second tooling: used to fix the primary workpiece of the rear axle box; The machine tool system is used to process the first relative surface of the original workpiece in the first process to obtain a primary workpiece of a rear axle box, and to process the second relative surface and the third relative surface of the primary workpiece of the rear axle box in the second process according to the reference coordinate system to obtain a finished workpiece of the rear axle box; Zero point positioning system: used to achieve zero point positioning of the first tooling and the second tooling; Renishaw measurement system: used to measure the reference surface after the first relative surface is machined, obtain reference surface data, calculate the zero point of the primary workpiece of the rear axle box according to the reference surface data, and create the reference coordinate system.

7. The bulldozer rear axle box processing system according to claim 6, characterized in that: The bottoms of the first tooling and the second tooling are provided with positioning structures corresponding to the locking devices of the zero-point positioning system; The fixing platform of the second tooling is provided with a fixing threaded hole corresponding to the position of the preset pull-down threaded hole in the first opposite surface, which is used to fix the plane where the preset pull-down threaded hole in the primary workpiece of the rear axle box is located on the fixing platform of the second tooling by bolts.

8. The bulldozer rear axle box processing system according to claim 7, characterized in that: Also includes: A tool detection system; used for monitoring the status of the tools included in the machine tool system; The machine tool system is also used to: in response to the tool detection system detecting that the tool is damaged, the tool is worn beyond a preset degree, or the machine tool load is abnormal, stop the program running and issue an alarm.

9. The bulldozer rear axle box processing system according to any one of claims 6 to 8, characterized in that: The machine tool system comprises two workbenches, and the two workbenches are used to perform the first process and the second process respectively.

10. The bulldozer rear axle box processing system according to claim 6, characterized in that: The Renishaw measurement system is also used to: detect whether the dimensional deviation of the primary workpiece of the rear axle box exceeds a preset allowable range; The machine tool system is also used for: in response to the Renishaw measurement system detecting that the primary workpiece of the rear axle box has a dimensional deviation that exceeds a preset allowable range, stopping the program running and issuing an alarm, and guiding the operator to correct relevant parameters according to the dimensional deviation detected by the Renishaw measurement system.

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