Combined machining method for threaded hole wall of electric cabinet die-casting body and electric cabinet

Abstract

The invention provides a combined machining method for a threaded hole wall of an electric cabinet die-casting body and an electric cabinet. The method comprises the steps that threaded hole die-casting forming parameters of an electric cabinet die-casting body are obtained; performing fixed hole adjustment on the threaded hole die-casting forming parameters and preset threaded hole pattern parameters to obtain threaded hole pattern adjustment; and sending a wall-cutting processing loss signal to the electric cabinet die-casting controller according to the threaded hole pattern adjustment. After threaded hole die-casting forming parameters are collected, die-casting forming structures of the positions of all threaded holes in an electric cabinet die-casting body are determined, then the threaded hole die-casting forming parameters are compared with standard die-casting forming parameters, the hole pattern difference conditions of the positions of all the threaded holes are conveniently determined, and finally, according to the difference values, the positions of all the threaded holes in the electric cabinet die-casting body are determined. And the corresponding wall thickness of the specified threaded hole is machined and adjusted, so that the wall thickness of the position of the threaded hole which is locally thick originally is adjusted to the specified wall thickness, and the cooling and solidification speeds of all the positions of the electric cabinet die-casting body are kept consistent.

Description

Technical Field

[0001] The present disclosure relates to the technical field of combined processing of electric control boxes, and particularly to a method for combined processing of the threaded hole walls of a die-cast body of an electric control box and an electric control box. Background Art

[0002] In the high-pressure casting of aluminum alloy electric control boxes, shrinkage holes and gas holes are relatively common defects. After processing, there are small holes on the local surface. When pressure is applied in the sealing channel, it will leak out from these small holes. The conventional method is to perform a leak-proof liquid process to block the leakage channel.

[0003] However, in some local thick areas of the electric control box, for example, at the positions of two M5 threaded holes in the shape of an 8, the wall thickness is uneven, and it solidifies relatively late in the solidification process. Finally, shrinkage holes are likely to appear. Since the die-cast bottom hole at M5 is small, the conventional internal cooling method cannot perform cooling water circulation because the diameter of the insert pin is too small, and the solidification speed of the thick part cannot be accelerated, resulting in inconsistent solidification speeds at different positions of the electric control box, and thus the problem of shrinkage holes cannot be solved. Summary of the Invention

[0004] The purpose of the present disclosure is to overcome the deficiencies in the prior art and provide a method for combined processing of the threaded hole walls of a die-cast body of an electric control box and an electric control box that can effectively improve the consistency of the cooling and solidification speed.

[0005] The purpose of the present disclosure is achieved through the following technical solutions: A method for combined processing of the threaded hole walls of a die-cast body of an electric control box, the method comprising: Obtaining the die-casting forming parameters of the threaded holes of the die-cast body of the electric control box; Performing a fixed-hole adjustment amount between the die-casting forming parameters of the threaded holes and the preset threaded hole type parameters to obtain a threaded hole type adjustment; Sending a wall trimming processing enable signal to the electric control box die-casting controller according to the threaded hole type adjustment to adjust the wall thickness of the threaded holes of the die-cast body of the electric control box.

[0006] In one embodiment, obtaining the die-casting forming parameters of the threaded holes of the die-cast body of the electric control box includes: obtaining the threaded hole diameter of the die-cast body of the electric control box.

[0007] In one embodiment, performing a fixed-hole adjustment amount between the die-casting forming parameters of the threaded holes and the preset threaded hole type parameters to obtain a threaded hole type adjustment includes: obtaining the adjustment between the threaded hole diameter and the preset hole diameter to obtain an aperture adjustment.

[0008] In one embodiment, a wall trimming processing disabling signal is sent to the die-casting controller of the electrical control box according to the thread hole type adjustment to adjust the wall thickness of the thread hole of the die-cast body of the electrical control box, including: detecting whether the hole diameter adjustment matches a preset diameter difference; when the hole diameter adjustment matches the preset diameter difference, sending a wall trimming processing enabling signal to the die-casting controller of the electrical control box to reduce the wall thickness at the thread hole of the die-cast body of the electrical control box.

[0009] In one embodiment, obtaining the die-casting forming parameters of the thread hole of the die-cast body of the electrical control box includes: obtaining the thread hole depth of the die-cast body of the electrical control box.

[0010] In one embodiment, performing a fixed hole adjustment amount on the die-casting forming parameters of the thread hole and preset thread hole type parameters to obtain a thread hole type adjustment, including: obtaining the adjustment between the thread hole depth and the preset hole depth to obtain a hole depth adjustment.

[0011] In one embodiment, a wall trimming processing disabling signal is sent to the die-casting controller of the electrical control box according to the thread hole type adjustment to adjust the wall thickness of the thread hole of the die-cast body of the electrical control box, including: detecting whether the hole depth adjustment matches a preset depth difference; when the hole depth adjustment does not match the preset depth difference, sending a wall trimming processing disabling signal to the die-casting controller of the electrical control box to maintain the current wall thickness of the thread hole of the die-cast body of the electrical control box.

[0012] In one embodiment, after sending a wall trimming processing disabling signal to the die-casting controller of the electrical control box according to the thread hole type adjustment, it further includes: performing friction welding processing on the lid-covering area of the die-cast body of the electrical control box, where the lid-covering area is arranged adjacent to the thread hole of the die-cast body of the electrical control box to form a single inspection cavity in the lid-covering area; performing a wall thickness pressure-holding leak test on the lid-covering area to obtain the hole wall pressure-holding leakage amount of the single inspection cavity; detecting whether the hole wall pressure-holding leakage amount is greater than a first preset pressure-holding leakage amount; when the hole wall pressure-holding leakage amount is greater than the first preset pressure-holding leakage amount, detecting whether the hole wall pressure-holding leakage amount is less than or equal to a second preset pressure-holding leakage amount; when the hole wall pressure-holding leakage amount is less than or equal to the second preset pressure-holding leakage amount, sending a reverse feeding signal to the die-casting controller of the electrical control box to reduce the reverse wall thickness reduction amount of the thread hole of the die-cast body of the electrical control box.

[0013] In one embodiment, after detecting whether the hole wall pressure-holding leakage amount is less than or equal to the second preset pressure-holding leakage amount, it further includes: when the hole wall pressure-holding leakage amount is greater than the second preset pressure-holding leakage amount, sending a front-side material reduction signal to the die-casting controller of the electrical control box to increase the front-side wall thickness reduction amount of the thread hole of the die-cast body of the electrical control box.

[0014] An electrical control box is manufactured by using the method for combined processing of the thread hole wall of the die-cast body of the electrical control box according to any one of the above embodiments.

[0015] Compared with the prior art, the present disclosure has at least the following advantages: After collecting the die-casting forming parameters of the threaded holes, the die-casting forming structures of the positions of the threaded holes in the die-cast body of the electric control box are determined. Then, the die-casting forming parameters of the threaded holes are compared with the standard die-casting forming parameters to facilitate determining the hole shape differences at the positions of the threaded holes. Finally, according to the above difference values, the wall thickness corresponding to the specified threaded holes is processed and adjusted, so as to facilitate adjusting the wall thickness machining mode, adjusting the wall thickness at the positions of the threaded holes that are prone to local thickness to the specified wall thickness, and thus making the cooling and solidification speeds of all positions of the die-cast body of the electric control box consistent. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following will briefly introduce the drawings required in the embodiments. It should be understood that the following drawings only show some embodiments of the present disclosure and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a flowchart of the method for machining the combination of the threaded hole walls of the die-cast body of the electric control box in an embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] To facilitate the understanding of the present disclosure, the present disclosure will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present disclosure are shown in the drawings. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure content of the present disclosure more thorough and comprehensive.

[0019] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art belonging to the technical field of the present disclosure. The terms used herein in the specification of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0021] The present disclosure relates to a method for combined machining of the threaded hole walls of an electric control box die-casting body. In one embodiment, the method for combined machining of the threaded hole walls of the electric control box die-casting body includes obtaining the die-casting forming parameters of the threaded holes of the electric control box die-casting body; performing fixed-hole adjustment on the die-casting forming parameters of the threaded holes and preset threaded hole type parameters to obtain the threaded hole type adjustment; and sending a wall milling processing enabling signal to the electric control box die-casting controller according to the threaded hole type adjustment to adjust the wall thickness of the threaded holes of the electric control box die-casting body. After collecting the die-casting forming parameters of the threaded holes, the die-casting forming structures at the positions of the respective threaded holes in the electric control box die-casting body are determined. Then, the die-casting forming parameters of the threaded holes are compared with the standard die-casting forming parameters to facilitate determining the hole type differences at the positions of the respective threaded holes. Finally, according to the above difference values, the wall thickness of the corresponding threaded holes is processed and adjusted, so as to facilitate adjusting the wall milling processing mode, making the wall thickness at the positions of the threaded holes that are prone to local thickness be adjusted to the specified wall thickness, so that the cooling and solidification speeds at various positions of the electric control box die-casting body are kept consistent.

[0022] Please refer to Figure 1 , which is a flowchart of the method for combined machining of the threaded hole walls of an electric control box die-casting body according to an embodiment of the present disclosure. The method for combined machining of the threaded hole walls of the electric control box die-casting body includes some or all of the following steps.

[0023] S100: Obtain the die-casting forming parameters of the threaded holes of the electric control box die-casting body.

[0024] In this embodiment, the die-casting forming parameters of the threaded holes are the forming data of the threaded holes on the electric control box die-casting body, that is, the die-casting forming parameters of the threaded holes are the forming parameters after die-casting of the respective threaded holes on the electric control box die-casting body, that is, the die-casting forming parameters of the threaded holes correspond to the hole types of the respective threaded holes on the electric control box die-casting body. By collecting the die-casting forming parameters of the threaded holes, it is convenient to determine the model types corresponding to the respective threaded holes on the electric control box die-casting body, so as to facilitate distinguishing the required threaded holes, and further facilitate determining the positions of the threaded holes that need wall thickness adjustment.

[0025] S200: Perform fixed-hole adjustment on the die-casting forming parameters of the threaded holes and preset threaded hole type parameters to obtain the threaded hole type adjustment.

[0026] In this embodiment, the die-casting forming parameters of the threaded holes are the forming data of the threaded holes on the die-cast body of the electric control box, that is, the die-casting forming parameters of the threaded holes are the forming parameters after die-casting of each threaded hole on the die-cast body of the electric control box. That is to say, the die-casting forming parameters of the threaded holes correspond to the hole shapes of the threaded holes on the die-cast body of the electric control box. By collecting the die-casting forming parameters of the threaded holes, it is convenient to determine the model types corresponding to the threaded holes on the die-cast body of the electric control box, so as to facilitate the identification of the required threaded holes, and further facilitate the determination of the positions of the threaded holes that need wall thickness adjustment. The preset threaded hole type parameters are the standard threaded hole forming data on the die-cast body of the electric control box, that is, the preset threaded hole type parameters are the reference forming parameters after die-casting of each threaded hole on the die-cast body of the electric control box. That is to say, the preset threaded hole type parameters correspond to the specified hole shapes of the threaded holes on the die-cast body of the electric control box. By calculating the hole flatness difference between the die-casting forming parameters of the threaded holes and the preset threaded hole type parameters, specifically, calculating the least squares difference between the die-casting forming parameters of the threaded holes and the preset threaded hole type parameters, the hole shapes of the threaded holes on the die-cast body of the electric control box are compared to determine the degree of difference between the threaded holes on the die-cast body of the electric control box and the standard threaded holes.

[0027] S300: Send a wall trimming processing enabling signal to the die-casting controller of the electric control box according to the threaded hole type flatness to adjust the wall thickness of the threaded holes on the die-cast body of the electric control box.

[0028] In this embodiment, the thread hole type adjustment is obtained based on the die-casting forming parameters of the thread holes and the preset thread hole type parameters. The die-casting forming parameters of the thread holes are the forming data of the thread holes on the die-cast body of the electric control box, that is, the die-casting forming parameters of the thread holes are the forming parameters after die-casting of each thread hole on the die-cast body of the electric control box. That is to say, the die-casting forming parameters of the thread holes correspond to the hole types of each thread hole on the die-cast body of the electric control box. By collecting the die-casting forming parameters of the thread holes, it is convenient to determine the model types corresponding to each thread hole on the die-cast body of the electric control box, so as to facilitate the distinction of the required thread holes, and further facilitate the determination of the positions of the thread holes that need wall thickness adjustment. The preset thread hole type parameters are the standard thread hole forming data on the die-cast body of the electric control box, that is, the preset thread hole type parameters are the reference forming parameters after die-casting of each thread hole on the die-cast body of the electric control box. That is to say, the preset thread hole type parameters correspond to the specified hole types of the thread holes on the die-cast body of the electric control box. By calculating the hole type adjustment amount between the die-casting forming parameters of the thread holes and the preset thread hole type parameters, specifically, calculating the least square difference between the die-casting forming parameters of the thread holes and the preset thread hole type parameters, the hole types of each thread hole on the die-cast body of the electric control box are compared to determine the degree of difference between each thread hole on the die-cast body of the electric control box and the standard thread hole. After determining the thread hole type adjustment, the hole types of each thread hole on the die-cast body of the electric control box are determined, which is convenient for processing the wall thickness corresponding to the specified thread hole, so that the wall thickness of the specified thread hole meets the solidification speed requirements, and thus the solidification speed of the thickened position corresponding to the thread hole of the die-cast body of the electric control box is consistent with that of other positions.

[0029] In the above embodiment, after collecting the die-casting forming parameters of the thread holes, the die-casting forming structure of each thread hole position in the die-cast body of the electric control box is determined. Then, the die-casting forming parameters of the thread holes are compared with the standard die-casting forming parameters to facilitate the determination of the hole type difference of each thread hole position. Finally, according to the above difference value, the wall thickness corresponding to the specified thread hole is processed and adjusted, so as to facilitate the adjustment of the wall thickness processing mode, and the wall thickness of the thread hole position that was originally prone to local thickening is adjusted to the specified wall thickness, so that the cooling and solidification speeds of each position of the die-cast body of the electric control box are consistent.

[0030] In one embodiment, the die-casting forming parameters of the threaded holes of the electric control box die-casting body are obtained, including: obtaining the threaded hole diameter of the electric control box die-casting body. In this embodiment, the die-casting forming parameters of the threaded holes are the forming data of the threaded holes on the electric control box die-casting body, that is, the die-casting forming parameters of the threaded holes are the forming parameters after die-casting of each threaded hole on the electric control box die-casting body, and also that the die-casting forming parameters of the threaded holes correspond to the hole shapes of the respective threaded holes on the electric control box die-casting body. By collecting the die-casting forming parameters of the threaded holes, it is convenient to determine the model types corresponding to the respective threaded holes on the electric control box die-casting body, thereby facilitating the distinction of the required threaded holes, and further facilitating the determination of the positions of the threaded holes where wall thickness adjustment is required. The die-casting forming parameters of the threaded holes include the threaded hole diameter of the electric control box die-casting body, and the threaded hole diameter is the inner hole diameter corresponding to each threaded hole on the electric control box die-casting body, that is, the threaded hole diameter corresponds to the sizes of the respective threaded holes on the electric control box die-casting body. By collecting the threaded hole diameter, it is convenient to determine the size conditions of the threaded hole diameters of the respective threaded holes on the electric control box die-casting body.

[0031] Further, perform a fixed-hole adjustment amount on the die-casting forming parameters of the threaded holes and the preset threaded hole type parameters to obtain the threaded hole type adjustment, including: obtaining the adjustment between the threaded hole diameter and the preset hole diameter to obtain the hole diameter adjustment. In this embodiment, the die-casting forming parameters of the threaded holes are the forming data of the threaded holes on the die-cast body of the electric control box, that is, the die-casting forming parameters of the threaded holes are the forming parameters after die-casting of each threaded hole on the die-cast body of the electric control box, that is, the die-casting forming parameters of the threaded holes correspond to the hole types of each threaded hole on the die-cast body of the electric control box. By collecting the die-casting forming parameters of the threaded holes, it is convenient to determine the model types corresponding to each threaded hole on the die-cast body of the electric control box, so as to facilitate distinguishing the required threaded holes, and further facilitate determining the positions of the threaded holes that need wall thickness adjustment. The preset threaded hole type parameters are the standard threaded hole forming data on the die-cast body of the electric control box, that is, the preset threaded hole type parameters are the reference forming parameters after die-casting of each threaded hole on the die-cast body of the electric control box, that is, the preset threaded hole type parameters correspond to the specified hole types of the threaded holes on the die-cast body of the electric control box. By performing a fixed-hole adjustment amount on the die-casting forming parameters of the threaded holes and the preset threaded hole type parameters, specifically, obtaining the least squares difference between the die-casting forming parameters of the threaded holes and the preset threaded hole type parameters, the hole types of each threaded hole on the die-cast body of the electric control box are compared to determine the degree of difference between each threaded hole on the die-cast body of the electric control box and the standard threaded hole. The die-casting forming parameters of the threaded holes include the threaded hole diameters of the die-cast body of the electric control box, and the threaded hole diameters are the inner hole diameters corresponding to each threaded hole on the die-cast body of the electric control box, that is, the threaded hole diameters correspond to the sizes of each threaded hole on the die-cast body of the electric control box. By collecting the threaded hole diameters, it is convenient to determine the size conditions of each threaded hole on the die-cast body of the electric control box. After obtaining the adjustment between the threaded hole diameters and the preset hole diameters, the differences between the diameters of each threaded hole on the die-cast body of the electric control box and the diameters of the standard threaded holes are determined, so as to facilitate distinguishing the hole type conditions of each threaded hole on the die-cast body of the electric control box, and further facilitate selecting the specified threaded holes that need wall thickness adjustment.

[0032] Further, a signal indicating the loss of enabling for wall trimming machining is sent to the die-casting controller of the electrical control box according to the thread hole type adjustment, so as to adjust the wall thickness of the thread holes of the die-cast body of the electrical control box, including: detecting whether the hole diameter adjustment matches a preset diameter difference; when the hole diameter adjustment matches the preset diameter difference, sending an enabling signal for wall trimming machining to the die-casting controller of the electrical control box to reduce the wall thickness at the thread holes of the die-cast body of the electrical control box. In this embodiment, the thread hole type adjustment is obtained based on the die-casting forming parameters of the thread holes and the preset thread hole type parameters. The die-casting forming parameters of the thread holes are the forming data of the thread holes on the die-cast body of the electrical control box, that is, the die-casting forming parameters of the thread holes are the forming parameters after die-casting of each thread hole on the die-cast body of the electrical control box, and also the die-casting forming parameters of the thread holes correspond to the hole types of the respective thread holes on the die-cast body of the electrical control box. By collecting the die-casting forming parameters of the thread holes, it is convenient to determine the model types corresponding to the respective thread holes on the die-cast body of the electrical control box, so as to facilitate the distinction of the required thread holes, and further facilitate the determination of the positions of the thread holes that need to have their wall thickness adjusted. The preset thread hole type parameters are the standard thread hole forming data on the die-cast body of the electrical control box, that is, the preset thread hole type parameters are the reference forming parameters after die-casting of each thread hole on the die-cast body of the electrical control box, and also the preset thread hole type parameters correspond to the specified hole types of the thread holes on the die-cast body of the electrical control box. By calculating the hole type adjustment amount between the die-casting forming parameters of the thread holes and the preset thread hole type parameters, specifically, by calculating the least squares difference between the die-casting forming parameters of the thread holes and the preset thread hole type parameters, the hole types of the respective thread holes on the die-cast body of the electrical control box are compared to determine the degree of difference between the respective thread holes on the die-cast body of the electrical control box and the standard thread holes. After determining the thread hole type adjustment, the hole types of the respective thread holes on the die-cast body of the electrical control box are determined, which is convenient for processing the wall thickness corresponding to the specified thread holes, so that the wall thickness of the specified thread holes meets the solidification speed requirements, and thus the solidification speed of the thickened positions corresponding to the thread holes of the die-cast body of the electrical control box is consistent with that of other positions. The die-casting forming parameters of the thread holes include the thread hole diameters of the die-cast body of the electrical control box. The thread hole diameters are the inner hole diameters corresponding to the respective thread holes on the die-cast body of the electrical control box, that is, the thread hole diameters correspond to the sizes of the respective thread holes on the die-cast body of the electrical control box. By collecting the thread hole diameters, it is convenient to determine the size conditions of the respective thread holes on the die-cast body of the electrical control box. After calculating the adjustment of the thread hole diameters and the preset hole diameters, the difference between the diameters of the respective thread holes on the die-cast body of the electrical control box and the diameters of the standard thread holes is determined, so as to facilitate the distinction of the hole type conditions of the respective thread holes on the die-cast body of the electrical control box, and further facilitate the selection of the specified thread holes that need to have their wall thickness adjusted.The aperture adjustment matches the preset diameter difference, indicating that the aperture of the currently selected threaded hole on the electric control box die-casting body is the specified aperture, that is, indicating that the currently selected threaded hole on the electric control box die-casting body is the specified threaded hole, which also means that the wall thickness of the currently selected threaded hole on the electric control box die-casting body is locally thick. By sending a wall thickness reduction processing enable signal to the electric control box die-casting controller, the wall thickness at the threaded hole of the electric control box die-casting body is reduced, so that the wall thickness corresponding to the threaded hole with the specified aperture on the electric control box die-casting body is reduced to be consistent with the solidification rate at other positions.

[0033] In another embodiment, when the aperture adjustment does not match the preset diameter difference, a wall thickness reduction processing disable signal is sent to the electric control box die-casting controller to maintain the current wall thickness of the threaded hole of the electric control box die-casting body. At this time, the aperture of the currently selected threaded hole on the electric control box die-casting body is too large or too small compared with the aperture of the specified threaded hole, that is, the wall thickness at this position will not have a thick problem and does not belong to the threaded hole that needs wall thickness adjustment, so there is no need to reduce the wall thickness at this position.

[0034] In another embodiment, the specified threaded hole is an M5 threaded hole, and the aperture is 3 mm to 3.5 mm. Specifically, the aperture of the specified M5 threaded hole is 3.2 mm. Moreover, there are two threaded holes corresponding to the position where the wall thickness is adjusted to form two M5 threaded holes in an 8-shaped pattern. The aperture size is obtained through an image collector, for example, a CCD camera.

[0035] In one of the embodiments, the die-casting forming parameters of the threaded holes of the electric control box die-casting body are obtained, including: obtaining the depth of the threaded holes of the electric control box die-casting body. In this embodiment, the die-casting forming parameters of the threaded holes are the forming data of the threaded holes on the electric control box die-casting body, that is, the die-casting forming parameters of the threaded holes are the forming parameters after die-casting of each threaded hole on the electric control box die-casting body, which also means that the die-casting forming parameters correspond to the hole types of the threaded holes on the electric control box die-casting body. By collecting the die-casting forming parameters of the threaded holes, it is convenient to determine the model types corresponding to the threaded holes on the electric control box die-casting body, so as to facilitate distinguishing the required threaded holes, and further facilitate determining the positions of the threaded holes that need wall thickness adjustment. The die-casting forming parameters of the threaded holes include the depth of the threaded holes of the electric control box die-casting body, and the depth of the threaded holes is the inner hole depth corresponding to each threaded hole on the electric control box die-casting body, that is, the depth of the threaded holes corresponds to the size of each threaded hole on the electric control box die-casting body. By collecting the depth of the threaded holes, it is convenient to determine the depth conditions inside the holes of each threaded hole on the electric control box die-casting body.

[0036] Further, perform a hole alignment adjustment on the die-casting forming parameters of the threaded hole and the preset threaded hole profile parameters to obtain the threaded hole profile alignment adjustment, including: obtaining the alignment adjustment between the depth of the threaded hole and the preset hole depth to obtain the hole depth alignment adjustment. In this embodiment, the die-casting forming parameters of the threaded hole are the forming data of the threaded holes on the die-cast body of the electric control box, that is, the die-casting forming parameters of the threaded hole are the forming parameters after die-casting of each threaded hole on the die-cast body of the electric control box, that is, the die-casting forming parameters of the threaded hole correspond to the hole profiles of each threaded hole on the die-cast body of the electric control box. By collecting the die-casting forming parameters of the threaded hole, it is convenient to determine the model types corresponding to each threaded hole on the die-cast body of the electric control box, so as to facilitate distinguishing the required threaded holes, and further facilitate determining the positions of the threaded holes that need wall thickness adjustment. The preset threaded hole profile parameters are the standard threaded hole forming data on the die-cast body of the electric control box, that is, the preset threaded hole profile parameters are the reference forming parameters after die-casting of each threaded hole on the die-cast body of the electric control box, that is, the preset threaded hole profile parameters correspond to the specified hole profiles of the threaded holes on the die-cast body of the electric control box. By performing a hole alignment adjustment on the die-casting forming parameters of the threaded hole and the preset threaded hole profile parameters, specifically, obtaining the least squares difference between the die-casting forming parameters of the threaded hole and the preset threaded hole profile parameters, the hole profiles of each threaded hole on the die-cast body of the electric control box are compared to determine the degree of difference between each threaded hole on the die-cast body of the electric control box and the standard threaded hole. The die-casting forming parameters of the threaded hole include the depth of the threaded hole of the die-cast body of the electric control box, and the depth of the threaded hole is the inner hole depth corresponding to each threaded hole on the die-cast body of the electric control box, that is, the depth of the threaded hole corresponds to the size of each threaded hole on the die-cast body of the electric control box. By collecting the depth of the threaded hole, it is convenient to determine the depth conditions inside the holes of each threaded hole on the die-cast body of the electric control box. After obtaining the alignment adjustment between the depth of the threaded hole and the preset hole depth, the difference between the hole depths of each threaded hole on the die-cast body of the electric control box and the hole depth of the standard threaded hole is determined, so as to facilitate distinguishing the hole profile conditions of each threaded hole on the die-cast body of the electric control box, and further facilitate selecting the specified threaded holes that need wall thickness adjustment.

[0037] Further, a wall trimming processing disabling signal is sent to the die-casting controller of the electric control box according to the thread hole type adjustment, so as to adjust the wall thickness of the thread holes of the die-cast body of the electric control box, including: detecting whether the hole depth adjustment matches a preset depth difference; when the hole depth adjustment does not match the preset depth difference, sending a wall trimming processing disabling signal to the die-casting controller of the electric control box to maintain the current wall thickness of the thread holes of the die-cast body of the electric control box. In this embodiment, the thread hole type adjustment is obtained based on the die-casting forming parameters of the thread holes and the preset thread hole type parameters. The die-casting forming parameters of the thread holes are the forming data of the thread holes on the die-cast body of the electric control box, that is, the die-casting forming parameters of the thread holes are the forming parameters after die-casting of each thread hole on the die-cast body of the electric control box, that is, the die-casting forming parameters of the thread holes correspond to the hole types of the respective thread holes on the die-cast body of the electric control box. By collecting the die-casting forming parameters of the thread holes, it is convenient to determine the model types corresponding to the respective thread holes on the die-cast body of the electric control box, so as to facilitate the distinction of the required thread holes, and further facilitate the determination of the positions of the thread holes that need wall thickness adjustment. The preset thread hole type parameters are the standard thread hole forming data on the die-cast body of the electric control box, that is, the preset thread hole type parameters are the reference forming parameters after die-casting of each thread hole on the die-cast body of the electric control box, that is, the preset thread hole type parameters correspond to the specified hole types of the thread holes on the die-cast body of the electric control box. By calculating the hole type adjustment amount between the die-casting forming parameters of the thread holes and the preset thread hole type parameters, specifically, calculating the least squares difference between the die-casting forming parameters of the thread holes and the preset thread hole type parameters, the hole types of the respective thread holes on the die-cast body of the electric control box are compared to determine the degree of difference between the respective thread holes on the die-cast body of the electric control box and the standard thread holes. After determining the thread hole type adjustment, the hole types of the respective thread holes on the die-cast body of the electric control box are determined, which is convenient for processing the wall thickness corresponding to the specified thread holes, so that the wall thickness of the specified thread holes meets the solidification speed requirements, so that the solidification speed of the thickened positions corresponding to the thread holes of the die-cast body of the electric control box is consistent with the solidification speed of other positions. The die-casting forming parameters of the thread holes include the thread hole depth of the die-cast body of the electric control box. The thread hole depth is the inner hole depth corresponding to each thread hole on the die-cast body of the electric control box, that is, the thread hole depth corresponds to the size of each thread hole on the die-cast body of the electric control box. By collecting the thread hole depth, it is convenient to determine the depth conditions of the inner holes of the respective thread holes on the die-cast body of the electric control box. After calculating the adjustment of the thread hole depth and the preset hole depth, the difference between the hole depths of the respective thread holes on the die-cast body of the electric control box and the hole depth of the standard thread holes is determined, so as to facilitate the distinction of the hole type conditions of the respective thread holes on the die-cast body of the electric control box, and further facilitate the selection of the specified thread holes that need wall thickness adjustment.The mismatch between the hole depth adjustment and the preset diameter difference indicates that the hole depth of the currently selected threaded hole on the electric control box die-casting body does not match the specified hole depth, that is, it indicates that the currently selected threaded hole on the electric control box die-casting body is not the specified threaded hole, which also means that the wall thickness of the currently selected threaded hole on the electric control box die-casting body is of normal thickness. At this time, a wall thickness reduction processing disable signal is sent to the electric control box die-casting controller to maintain the current wall thickness of the threaded hole on the electric control box die-casting body. At this time, the hole depth of the currently selected threaded hole on the electric control box die-casting body is too large or too small compared with the hole depth of the specified threaded hole, that is, the wall thickness at this position will not have a thick problem and does not belong to the threaded hole that needs wall thickness adjustment, so there is no need to reduce the wall thickness at this position.

[0038] In another embodiment, when the hole depth adjustment matches the preset diameter difference, a wall thickness reduction processing enable signal is sent to the electric control box die-casting controller to reduce the wall thickness at the threaded hole of the electric control box die-casting body. At this time, it indicates that the hole depth of the currently selected threaded hole on the electric control box die-casting body is the specified hole depth, that is, it indicates that the currently selected threaded hole on the electric control box die-casting body is the specified threaded hole, which also means that the wall thickness of the currently selected threaded hole on the electric control box die-casting body is locally thick. By sending a wall thickness reduction processing enable signal to the electric control box die-casting controller to reduce the wall thickness at the threaded hole of the electric control box die-casting body, the wall thickness corresponding to the threaded hole with the specified hole depth on the electric control box die-casting body is reduced to be consistent with the solidification rate at other positions.

[0039] In another embodiment, the preset hole depth is 9.6 mm to 10.8 mm. Specifically, the preset hole depth is 10.2 mm. The hole depth is obtained by an ultrasonic distance measuring instrument.

[0040] In one embodiment, a signal indicating the loss of wall trimming processing is sent to the die-casting controller of the electric control box according to the thread hole type adjustment. After that, it further includes: performing friction welding on the capping area of the electric control box die-casting body, where the capping area is arranged adjacent to the thread hole of the electric control box die-casting body to form a single inspection cavity in the capping area; performing wall thickness holding pressure leak detection on the capping area to obtain the wall holding pressure leakage amount of the single inspection cavity; detecting whether the wall holding pressure leakage amount is greater than a first preset holding pressure leakage amount; when the wall holding pressure leakage amount is greater than the first preset holding pressure leakage amount, detecting whether the wall holding pressure leakage amount is less than or equal to a second preset holding pressure leakage amount; when the wall holding pressure leakage amount is less than or equal to the second preset holding pressure leakage amount, sending a reverse feeding signal to the die-casting controller of the electric control box to reduce the reverse wall thickness reduction amount of the thread hole of the electric control box die-casting body. In this embodiment, the electric control box die-casting body is a die-casting structure formed after the electric control box is die-cast, and the capping area is the leak detection sealing position of the electric control box die-casting body, so as to facilitate the formation of a single inspection cavity for leak detection. The single inspection cavity is a leak detection cavity formed after welding a cover plate on the capping area. Moreover, the single inspection cavity corresponds to a specified thread hole. Specifically, the capping area is selected based on the specified thread hole, such that there is a specified thread hole on the edge of the single inspection cavity, that is, a part of the side wall of the single inspection cavity is the side wall of the specified thread hole. Performing wall thickness holding pressure leak detection on the capping area is to perform leak detection on the wall thickness of the single inspection cavity, so that the obtained wall holding pressure leakage amount is related to the wall thickness of the specified thread hole. The wall holding pressure leakage amount is the leakage situation of the single inspection cavity under the holding pressure test, that is, the wall holding pressure leakage amount is the magnitude of the pressure leaking from the side wall of the single inspection cavity under the test pressure. The first preset holding pressure leakage amount is the leakage standard amount of the single inspection cavity under the holding pressure test, that is, the first preset holding pressure leakage amount corresponds to the qualified side wall thickness of the single inspection cavity. The wall holding pressure leakage amount being greater than the first preset holding pressure leakage amount indicates that the pressure leaking from the side wall of the single inspection cavity under the test pressure is too large, that is, it indicates that there is a situation of local thickness on the side wall of the specified thread hole of the single inspection cavity.The second preset pressure-holding leakage amount is the thickness difference between the front and back sides of the side wall of the designated threaded hole of the single inspection cavity, and the second preset pressure-holding leakage amount is greater than the first preset pressure-holding leakage amount. The hole wall pressure-holding leakage amount being less than or equal to the second preset pressure-holding leakage amount indicates that there is leakage in the wall thickness of the designated threaded hole of the single inspection cavity due to local thickening, but the leakage amount is not large. This situation is caused by excessive reduction of the wall thickness on the back side of the designated threaded hole of the single inspection cavity resulting in insufficient mechanical strength of the wall surface. Moreover, the wall thickness on the front side of the designated threaded hole of the single inspection cavity remains normal, that is, there is no local thickening on the front side. At this time, a signal for adding material to the back side is sent to the die-casting controller of the electric control box to reduce the reduction amount of the wall thickness on the back side of the threaded hole of the die-casting body of the electric control box, so that the reduction thickness of the wall on the back side of the threaded hole of the die-casting body of the electric control box is reduced, thereby keeping the wall thickness on the back side of the threaded hole of the die-casting body of the electric control box within the normal range of wall thickness to avoid the situation of too low strength caused by too thin wall thickness on the back side.

[0041] Further, it is detected whether the pressure-holding leakage amount of the hole wall is less than or equal to a second preset pressure-holding leakage amount. After that, it further includes: when the pressure-holding leakage amount of the hole wall is greater than the second preset pressure-holding leakage amount, a positive material reduction signal is sent to the die-casting controller of the electric control box to increase the positive wall thickness reduction amount of the threaded hole of the electric control box die-casting body. In this embodiment, the electric control box die-casting body is a die-casting structure formed after the electric control box is die-cast, and the capping area is the leak detection capping position of the electric control box die-casting body, so as to form a single inspection cavity for leak detection. The single inspection cavity is a leak detection cavity formed after welding a cover plate on the capping area. Moreover, the single inspection cavity corresponds to a specified threaded hole. Specifically, the capping area is selected based on the specified threaded hole, so that there is a specified threaded hole on the edge of the single inspection cavity, that is, part of the side wall of the single inspection cavity is the side wall of the specified threaded hole. The wall thickness pressure-holding leak detection of the capping area is to detect the wall thickness of the single inspection cavity, so that the obtained pressure-holding leakage amount of the hole wall is related to the wall thickness of the specified threaded hole. The pressure-holding leakage amount of the hole wall is the leakage situation of the single inspection cavity under the pressure-holding test, that is, the pressure-holding leakage amount of the hole wall is the magnitude of the pressure leaked on the side wall of the single inspection cavity under the test pressure. The first preset pressure-holding leakage amount is the leakage standard amount of the single inspection cavity under the pressure-holding test, that is, the first preset pressure-holding leakage amount corresponds to the qualified side wall thickness of the single inspection cavity. The pressure-holding leakage amount of the hole wall being greater than the first preset pressure-holding leakage amount indicates that the pressure leaked on the side wall of the single inspection cavity under the test pressure is too large, that is, it indicates that there is a situation where the side wall of the specified threaded hole of the single inspection cavity is locally thick. The second preset pressure-holding leakage amount is the positive and negative thickening difference amount of the side wall of the specified threaded hole of the single inspection cavity, and the second preset pressure-holding leakage amount is greater than the first preset pressure-holding leakage amount. The pressure-holding leakage amount of the hole wall being greater than the second preset pressure-holding leakage amount indicates that there is a leakage caused by local thickening in the specified threaded hole of the single inspection cavity, and the leakage amount is too large. This situation is due to the fact that the positive wall thickness reduction of the specified threaded hole of the single inspection cavity is too small and the wall surface is thick, resulting in the phenomenon of wrapped air. That is, the gas in the positive wall of the specified threaded hole of the single inspection cavity cannot be discharged and forms a cavity inside. At this time, a positive material reduction signal is sent to the die-casting controller of the electric control box to increase the positive wall thickness reduction amount of the threaded hole of the electric control box die-casting body, so that the reduction thickness of the positive wall of the threaded hole of the electric control box die-casting body increases, so as to reduce the phenomenon of wrapped air in the positive wall thickness of the specified threaded hole of the single inspection cavity. Thus, while ensuring the consistency of the solidification speed at each position of the electric control box die-casting body, the internal airtightness of the electric control box die-casting body can also be improved to avoid the problems of thickening and poor airtightness at the 8-shaped M5 threaded hole of the electric control box.

[0042] In another embodiment, the adjustment of the wall thickness reduction amount on the front and back sides of the threaded holes of the die-cast body of the electric control box is the adjustment of the reduction amount at the corresponding positions on the die-casting mold for the threaded holes. For example, to reduce the wall thickness reduction amount on the back side of the threaded holes of the die-cast body of the electric control box, the height of the die-casting protrusion is reduced at the corresponding position on the die-casting mold opposite to the back side of the threaded holes; another example is that to increase the wall thickness reduction amount on the front side of the threaded holes of the die-cast body of the electric control box, the height of the die-casting protrusion is increased at the corresponding position on the die-casting mold opposite to the front side of the threaded holes. Among them, the adjustment of the wall thickness reduction amount on the front and back sides of the threaded holes can be the adjustment of the die-casting mold structure during the secondary die-casting after melting the unqualified die-cast body of the electric control box back into the furnace.

[0043] In another embodiment, the first preset pressure-holding leakage amount is 50 Pa, and the second preset pressure-holding leakage amount is 300 Pa. Among them, the pressure-holding leakage amount of the hole wall is collected by a leak detector.

[0044] In another embodiment, during the process of reducing the wall thickness reduction amount on the back side, the leakage amount is between 50 Pa and 300 Pa. For every 50 Pa increase in the leakage amount, the wall thickness reduction amount on the back side is 0.02 mm to 0.07 mm, specifically 0.05 mm.

[0045] In another embodiment, during the process of increasing the wall thickness reduction amount on the front side, the leakage amount is greater than 300 Pa. For every 50 Pa increase in the leakage amount, the wall thickness reduction amount on the front side is 0.08 mm to 0.13 mm, specifically 0.10 mm.

[0046] In another embodiment, the side of the electric control box die-cast body where the threaded hole is located is the front side, and the other side is the back side.

[0047] In another embodiment, pressure-holding leak detection is performed on the lid-covering area to obtain the pressure-holding leakage amount of the hole wall of the single-inspection cavity, which specifically includes the following steps: Position the die-cast body of the electric control box with a cover plate welded on the lid-covering area on the leak detection table of the leak detector; Pre-inflate the single-inspection cavity of the die-cast body of the electric control box; Perform secondary inflation on the single-inspection cavity of the die-cast body of the electric control box; Perform a pressure-holding operation on the single-inspection cavity of the die-cast body of the electric control box to obtain the pressure-holding leakage amount of the hole wall.

[0048] Among them, the pre-inflation time is 5 seconds, the secondary inflation time is 15 seconds, the pressure-holding operation time is 40 seconds, and the leak detection test time during pressure-holding is 20 seconds.

[0049] In one embodiment, the present disclosure also relates to an electric control box, which is manufactured by using the method for combined machining of the threaded hole walls of the electric control box die-casting body described in any of the above embodiments. In this embodiment, the method for combined machining of the threaded hole walls of the electric control box die-casting body includes obtaining the die-casting forming parameters of the threaded holes of the electric control box die-casting body; performing fixed-hole adjustment on the die-casting forming parameters of the threaded holes and the preset threaded hole type parameters to obtain the threaded hole type adjustment; sending a wall-cutting processing enabling signal to the electric control box die-casting controller according to the threaded hole type adjustment to adjust the wall thickness of the threaded holes of the electric control box die-casting body. After collecting the die-casting forming parameters of the threaded holes, the die-casting forming structures of the positions of the threaded holes in the electric control box die-casting body are determined. Then, the die-casting forming parameters of the threaded holes are compared with the standard die-casting forming parameters to facilitate determining the hole type differences at the positions of the threaded holes. Finally, according to the above difference values, the wall thickness corresponding to the specified threaded holes is processed and adjusted, so as to facilitate adjusting the wall-cutting processing mode, adjusting the wall thickness of the positions of the threaded holes that are prone to local thickening to the specified wall thickness, and making the cooling and solidification speeds of all positions of the electric control box die-casting body consistent.

[0050] The above embodiments only represent several implementation manners of the present disclosure, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present disclosure, several deformations and improvements can still be made, and these all belong to the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure patent shall be subject to the appended claims.

Claims

1. A combined machining method for the threaded hole wall of an electric control box die-casting body, characterized in that, Including: Obtain the die-casting forming parameters of the threaded holes of the electric control box die-casting body; Perform fixed-hole adjustment on the die-casting forming parameters of the threaded holes and the preset threaded hole type parameters to obtain the threaded hole type adjustment; Send a wall-cutting processing enabling signal to the electric control box die-casting controller according to the threaded hole type adjustment to adjust the wall thickness of the threaded holes of the electric control box die-casting body.

2. The method for combined machining of the threaded hole wall of the die-cast body of the electric control box according to claim 1, characterized in that, Obtain the die-casting forming parameters of the threaded holes of the electric control box die-casting body, including: Obtain the threaded hole diameter of the electric control box die-casting body.

3. The method for combined machining of the threaded hole wall of the die-cast body of the electric control box according to claim 2, characterized in that Perform fixed-hole adjustment on the die-casting forming parameters of the threaded holes and the preset threaded hole type parameters to obtain the threaded hole type adjustment, including: Calculate the adjustment between the threaded hole diameter and the preset hole diameter to obtain the hole diameter adjustment.

4. The method for combined machining of the threaded hole wall of the die-cast body of the electric control box according to claim 3, characterized in that, Send a wall-cutting processing enabling signal to the electric control box die-casting controller according to the threaded hole type adjustment to adjust the wall thickness of the threaded holes of the electric control box die-casting body, including: Detect whether the hole diameter adjustment matches the preset diameter difference; When the hole diameter adjustment matches the preset diameter difference, send a wall-cutting processing enabling signal to the electric control box die-casting controller to reduce the wall thickness at the threaded holes of the electric control box die-casting body.

5. The machining method for the threaded hole wall combination of the die-cast body of the electric control box according to claim 1, characterized in that, Obtain the die-casting forming parameters of the threaded holes of the electric control box die-casting body, including: Obtain the depth of the threaded holes of the electric control box die-casting body.

6. The method for combined machining of the threaded hole wall of the die-cast body of the electric control box according to claim 5, characterized in that, Perform fixed-hole adjustment on the die-casting forming parameters of the threaded holes and the preset threaded hole type parameters to obtain the threaded hole type adjustment, including: Calculate the adjustment between the depth of the threaded holes and the preset hole depth to obtain the hole depth adjustment.

7. The machining method for the threaded hole wall combination of the die-cast body of the electric control box according to claim 6, characterized in that, Send a wall-cutting processing enabling signal to the electric control box die-casting controller according to the threaded hole type adjustment to adjust the wall thickness of the threaded holes of the electric control box die-casting body, including: Detect whether the hole depth adjustment matches the preset depth difference; When the hole depth adjustment does not match the preset depth difference, send a wall-cutting processing disabling signal to the electric control box die-casting controller to maintain the current wall thickness of the threaded holes of the electric control box die-casting body.

8. The method for combined machining of the threaded hole wall of the die-cast body of the electric control box according to claim 1, characterized in that, After sending a wall-cutting processing enabling signal to the electric control box die-casting controller according to the threaded hole type adjustment, it further includes: Perform friction welding on the capping area of the electric control box die-casting body, where the capping area is arranged adjacent to the threaded holes of the electric control box die-casting body to form a single inspection cavity within the capping area; Perform wall thickness pressure-holding leak detection on the capping area to obtain the hole wall pressure-holding leakage amount of the single inspection cavity; Detect whether the hole wall pressure-holding leakage amount is greater than the first preset pressure-holding leakage amount; When the hole wall pressure-holding leakage amount is greater than the first preset pressure-holding leakage amount, detect whether the hole wall pressure-holding leakage amount is less than or equal to the second preset pressure-holding leakage amount; When the hole wall pressure-holding leakage amount is less than or equal to the second preset pressure-holding leakage amount, send a reverse feeding signal to the electric control box die-casting controller to reduce the reverse wall thickness reduction amount of the threaded holes of the electric control box die-casting body.

9. The machining method for the threaded hole wall combination of the die-cast body of the electric control box according to claim 8, characterized in that, After detecting whether the hole wall pressure-holding leakage amount is less than or equal to the second preset pressure-holding leakage amount, it further includes: When the hole wall pressure-holding leakage amount is greater than the second preset pressure-holding leakage amount, send a front-side material reduction signal to the electric control box die-casting controller to increase the front-side wall thickness reduction amount of the threaded holes of the electric control box die-casting body.

10. An electric control box, characterized in that, Manufactured by using the method for combined processing of the threaded hole walls of the electric control box die-casting body according to any one of claims 1 to 9.

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