New energy automobile differential mechanism pin hole machining device

Abstract

The invention discloses a new energy automobile differential mechanism pin hole machining device, and relates to the technical field of new energy automobile part machining, the new energy automobile differential mechanism pin hole machining device comprises a machining table, two boring cutter mechanisms symmetrically distributed on the two sides of the machining table, and a positioning and fixing mechanism used for fixing a differential mechanism shell; each group of boring cutter mechanism comprises a drilling boring cutter and a boring rod for fixedly mounting the drilling boring cutter, and further comprises two groups of automatic detection mechanisms, the automatic detection mechanisms are correspondingly matched and butted with the boring rods, and the automatic detection mechanisms are used for detecting the straightness of the corresponding boring rods. In the moving process of the two sets of boring rods, the sliding rods distributed on the two semi-ring bodies slide along the surface layers of the boring rods, if the boring rods are bent and deformed, the sliding rods at the corresponding positions can be extruded in the relative moving process, the corresponding sliding rods slide, alarm feedback is conducted through the alarm mechanism, and therefore self-inspection can be conveniently achieved before boring every time, and the boring efficiency is improved. And boring holes with poor coaxiality are prevented from being machined.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicle parts processing, and in particular to a new energy vehicle differential pin hole processing device. Background Art

[0002] One of the indispensable parts for new energy vehicles is the differential. The main function of the differential is to allow the left and right wheels to rotate at different speeds when turning. The key components inside the differential are mainly planetary gears and half-shaft gears; these gears need to mesh to transmit power, and the gear shaft needs to be installed through the pin holes, so the pin holes need to be processed in the cast differential housing.

[0003] Existing differential pinholes are typically arranged in pairs to facilitate the installation of the associated gear shaft components. The pinholes and shaft together form the fulcrum for the gear's rotation. When the differential is operating, the gears must rotate freely around this shaft. Because the pinholes are arranged in pairs, they are typically machined using a double-ended boring machine. During machining, the differential housing is secured to the lathe's positioning fixture, positioned between two sets of boring tools. The two sets of boring tools are then driven by their corresponding boring bars to move laterally and rotate at high speed, simultaneously machining pinholes on both sides of the differential housing.

[0004] The shortcomings of the existing differential pin hole processing equipment are: although the existing technology can use a double-head boring machine to simultaneously process paired pin holes from both sides of the shell, since the paired pin holes are respectively connected to the two ends of a shaft, the coaxiality requirement is relatively high. During the long-term use of the double-head boring machine, the boring bar on which the boring tool is installed may be deformed or shifted due to mechanical vibration, errors in the feeding system of the two boring heads, or thermal deformation. The existing boring machine cannot automatically detect the straightness or coaxiality of the boring bar every time the pin hole is processed, and can only rely on manual inspection and maintenance using tools on a regular basis. As a result, the boring bar may be offset and deformed during normal processing, and manual inspection and maintenance may not be timely discovered, resulting in problems with the pin hole processing quality. Summary of the Invention

[0005] The purpose of the present invention is to provide a new energy vehicle differential pin hole processing device to solve the technical problem in the prior art that the boring bar cannot be inspected in time when the automobile differential pin hole is processed by double-head boring and turning, which easily leads to problems in the pin hole processing quality.

[0006] The technical problem to be solved by the present invention can be achieved through the following technical solutions:

[0007] A new energy vehicle differential pin hole processing device includes a processing table, two sets of boring tool mechanisms symmetrically distributed on both sides of the processing table, and a positioning and fixing mechanism for fixing the differential housing. Each set of the boring tool mechanisms includes a drilling boring tool and a boring bar for fixing the drilling boring tool. It also includes:

[0008] An automatic detection mechanism, wherein two groups of the automatic detection mechanisms are provided and correspondingly cooperate with the boring bar, and the automatic detection mechanisms are used to detect the straightness of the corresponding boring bar; the automatic detection mechanism comprises a semi-ring body and a sliding detection mechanism, wherein two semi-ring bodies are provided, and multiple groups of the sliding detection mechanisms are evenly distributed on each semi-ring body; each group of the sliding detection mechanisms is equipped with an alarm mechanism;

[0009] The automatic separation mechanism is provided with two groups and is provided in correspondence with the automatic detection mechanism. The automatic separation mechanism is used to drive the two semi-ring bodies of the automatic detection mechanism to move longitudinally and separate.

[0010] Preferably, each group of the sliding detection mechanism includes a sliding rod and a limit spring, the sliding rod slides through the corresponding semi-ring body, and the sliding rod is also connected to the corresponding semi-ring body through the limit spring, and each group of the alarm mechanism is respectively arranged at the end of the corresponding sliding rod away from the boring bar, and the end of the sliding rod away from the boring bar is also provided with a lever amplification mechanism.

[0011] Preferably, the lever amplification mechanism includes an axis frame, a rotating lever and a fan-shaped scale plate, the axis frame is fixedly connected to the outer wall of the corresponding semi-ring body, and the axis frame is parallel to the corresponding slide rod, the axis frame is rotatably connected with a connecting shaft, the position of the rotating lever near the end is fixedly connected to the connecting shaft, and a disc spring is matched between the connecting shaft and the axis frame, the end of the rotating lever near the connecting shaft is matched on the end of the corresponding slide rod away from the boring bar, the fan-shaped scale plate is fixedly connected to one side of the corresponding axis frame, and the rotating lever is matched with the fan-shaped scale plate.

[0012] Preferably, the alarm mechanism includes a pressure sensing switch and an alarm, the pressure sensing switch is installed at the end of the slide rod away from the boring bar, and the pressure sensing switch is aligned with the corresponding rotating lever, and the alarm is electrically connected to the pressure sensing switch on each of the slide rods.

[0013] Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion.

[0014] Preferably, the linkage gear group includes a transmission gear, an upper rack and a lower rack, the upper rack is fixedly connected to the upper slide, the lower rack is fixedly connected to the lower slide, the transmission gear is rotatably connected to the processing table, and the upper rack and the lower rack are respectively engaged with both sides of the transmission gear.

[0015] Preferably, the boring tool mechanism also includes a main hydraulic telescopic rod and a slide. The main hydraulic telescopic rod is installed on the processing table. The slide is fixedly connected to the telescopic end of the main hydraulic telescopic rod. A drive motor for driving the boring bar to rotate is fixedly installed in the slide.

[0016] Preferably, a guide rail is installed on the processing table, and the slide is slidably connected to the guide rail.

[0017] Preferably, the processing device also includes a shutdown switch mechanism for controlling the shutdown of the main hydraulic telescopic rod, the shutdown switch mechanism includes an electric telescopic rod, a movable conductive contact and a fixed conductive contact, the movable conductive contact is connected to the telescopic end of the electric telescopic rod, and the movable conductive contact is in cooperative contact with the fixed conductive contact, the movable conductive contact and the fixed conductive contact are connected in series in the control circuit of the main hydraulic telescopic rod, and the alarm mechanism is electrically connected to the electric telescopic rod.

[0018] Preferably, the positioning and fixing mechanism includes a secondary hydraulic telescopic rod and a positioning mold, the positioning mold is fixedly installed on the processing table and is located between the two sets of boring tool mechanisms, the positioning mold cooperates with the differential housing, the secondary hydraulic telescopic rod is fixedly installed on the processing table, and the telescopic end of the secondary hydraulic telescopic rod is aligned with the positioning mold.

[0019] Beneficial effects of the present invention:

[0020] 1. When the two sets of boring bars of the present invention drive the corresponding drilling and boring cutters to move laterally close to the differential housing, the two half-ring bodies assembled into a complete ring body and the boring bars move relative to each other. During the movement, the sliding bars distributed on the two half-ring bodies slide along the surface of the boring bars. If the boring bars are bent and deformed, they will squeeze the sliding bars at the corresponding positions during the relative movement, causing the corresponding sliding bars to slide. Alarm feedback is provided by the alarm mechanism, thereby facilitating self-inspection before each boring and avoiding the production of boring holes with poor coaxiality.

[0021] 2. In the present invention, when the corresponding slide bar slides relative to the semi-ring body due to deformation of the boring bar, the slide bar pushes the corresponding rotary lever to deflect. Since the two lever arms of the rotary lever are of different lengths, the input end is the shorter end of the lever arm and the output end is the longer end of the lever arm, thereby making it easy to magnify the displacement distance of the slide bar and facilitate observation and reading by the operator.

[0022] 3. In the present invention, when there is no problem with the boring bar, the corresponding main hydraulic telescopic rod continuously pushes the boring bar to move with the drilling and boring tool. When it approaches the differential housing, the linkage push rod driven by the slide pushed by the main hydraulic telescopic rod just squeezes the lifting column set on the lower linkage turn plate deflection and squeezing arrangement, and the lifting column drives the slide frame to descend, thereby driving the lower semi-ring body to descend. At the same time, the upper slide frame is lifted through the lower rack, transmission gear and upper rack linkage, driving the upper semi-ring body to lift, thereby realizing the automatic separation of the two semi-ring bodies and detachment from the boring bar, thereby avoiding interference with the rotation of the boring bar. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 yes Figure 1 Schematic diagram of the enlarged structure at A in the middle;

[0025] Figure 3 It is a schematic diagram of the local structure of the two half rings and the boring bar in the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of the sliding rod and the rotating lever in the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of the linkage push rod, the linkage rotating plate and the lifting column in the present invention;

[0028] Figure 6 This is a schematic diagram of the structure of the upper slide and the lifting column in the present invention;

[0029] Figure 7 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0030] Figure 8It is a schematic diagram of the state in which the two half rings are separated from each other after the boring bar moves to the corresponding position in the present invention;

[0031] Figure 9 yes Figure 8 Schematic diagram of the enlarged structure at B in the middle;

[0032] Figure 10 It is a simplified circuit diagram of the shutdown switch mechanism in the present invention.

[0033] Description of reference numerals:

[0034] 100, machining table; 200, positioning and fixing mechanism; 201, auxiliary hydraulic telescopic rod; 202, positioning mold; 300, differential housing; 400, boring tool mechanism; 401, main hydraulic telescopic rod; 402, slide; 403, boring bar; 404, drilling and boring tool; 500, automatic detection mechanism; 501, semi-ring; 502, slide; 503, limit spring; 504, rotating lever; 505, shaft bracket; 506, pressure sensor Switch; 507, sector scale plate; 600, automatic separation mechanism; 601, support rail; 602, upper slide; 603, upper rack; 604, support spring; 605, transmission gear; 606, lower rack; 607, through port; 608, linkage rotating plate; 609, lifting column; 700, linkage push rod; 800, shutdown switch mechanism; 801, electric telescopic rod; 802, movable conductive contact; 803, fixed conductive contact. DETAILED DESCRIPTION

[0035] The specific embodiments of the present invention are described in detail below, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0036] like Figures 1-10As shown, a new energy vehicle differential pin hole processing device is improved based on a double-head boring machine and is used to process paired pin holes on a differential housing 300 for mounting planetary gear shafts. The processing device includes a processing table 100, a boring tool mechanism 400, and a positioning and fixing mechanism 200 for fixing the differential housing 300; the boring tool mechanism 400 is provided with two groups and is symmetrically distributed on both sides of the processing table 100. The two groups of boring tool mechanisms 400 move toward each other laterally along the processing table 100. Each group of boring tool mechanisms 400 includes a drilling boring tool 404 and a boring bar 403 for fixing the drilling boring tool 404. The processing device also includes an automatic detection mechanism 500 and an automatic separation mechanism 600. The automatic detection mechanism 500 is provided with two groups and is matched with the boring bar 403. The automatic detection mechanism 500 is used to detect the straightness of the corresponding boring bar 403; the automatic detection mechanism 500 includes a semi-ring body 501 and a sliding detection mechanism. There are two semi-ring bodies 501, which are spliced ​​together to form a complete ring and are sleeved on the corresponding boring bar 403. Each semi-ring body 501 has multiple groups of sliding detection mechanisms evenly distributed. The sliding detection mechanisms are distributed along the arc surface of the semi-ring body 501 and all point to the center line position of the semi-ring body 501. Each group of sliding detection mechanisms cooperates to contact the outer wall of the corresponding boring bar 403; and each group of sliding detection mechanisms can slide radially along the semi-ring body 501; each group of sliding detection mechanisms is equipped with an alarm mechanism. Whenever the sliding detection mechanism slides radially along the semi-ring body 501, the alarm mechanism issues an alarm feedback;

[0037] There are two sets of automatic separation mechanisms 600, which are arranged in correspondence with the automatic detection mechanism 500. The automatic separation mechanism 600 is used to drive the two half-ring bodies 501 corresponding to the automatic detection mechanism 500 to move longitudinally and separate.

[0038] That is, when the two sets of boring tool mechanisms 400 drive the drilling and boring tools 404 to move laterally close to the differential housing 300 for boring, the semi-ring bodies 501 spliced ​​together slide laterally during the movement process. During this movement process, detection is achieved, and after the detection is completed, the automatic detection mechanism 500 separates the two semi-ring bodies 501 and moves them away from the boring bar 403, thereby avoiding the boring operation.

[0039] In some specific embodiments, such as Figure 3As shown, each set of sliding detection mechanisms includes a slide bar 502 and a limit spring 503. The slide bar 502 slides through the corresponding semi-ring body 501, and the slide bar 502 is also connected to the corresponding semi-ring body 501 through the limit spring 503. When the two semi-ring bodies 501 are spliced ​​into a complete ring and sleeved on the boring bar 403, the distributed slide bars 502 are just distributed circumferentially around the boring bar 403, and the end of the slide bar 502 on the inner side of the semi-ring body 501 slides and contacts the outer wall of the boring bar 403. Specifically, a ball bearing can be set at the end of the slide bar 502; each set of alarm mechanisms is respectively arranged at the end of the corresponding slide bar 502 away from the boring bar 403, and the end of the slide bar 502 away from the boring bar 403 is also provided with a lever amplification mechanism.

[0040] In some specific embodiments, such as Figure 4 As shown, the lever amplification mechanism includes an axis frame 505, a rotating lever 504 and a fan-shaped scale plate 507. The axis frame 505 is fixedly connected to the outer wall of the corresponding semi-ring body 501, and the axis frame 505 is parallel to the corresponding slide bar 502. A connecting shaft is rotatably connected to the axis frame 505. The position of the rotating lever 504 near the end is fixedly connected to the connecting shaft, and a coil spring is connected between the connecting shaft and the axis frame 505. The end of the rotating lever 504 near the connecting shaft is matched to be away from the corresponding slide bar 502. At the end of the boring bar 403, a fan-shaped scale plate 507 is fixedly connected to one side of the corresponding axis frame 505, and the rotating lever 504 cooperates with the fan-shaped scale plate 507. Scale lines are distributed on the fan-shaped scale plate 507, distributed along the arc edge, and the starting position of the rotating lever 504 is aligned with the starting line of the scale line. The scale line here can be an angle scale line or a length scale line calculated based on the angle deviation, which is mainly used to indicate the distance that the corresponding slide rod 502 slides due to the complete deformation of the boring bar 403.

[0041] When the boring bar 403 passes horizontally through the two semi-ring bodies 501 spliced ​​together, the end of each slide bar 502 slides along the surface of the boring bar 403. If a certain section of the boring bar 403 is bent and deformed, the slide bar 502 at the corresponding position will slide outward relative to the semi-ring body 501 due to the squeezing of the arched position, thereby pushing the corresponding end of the rotating lever 504 to deflect. Since the rotating fulcrum around which the rotating lever 504 rotates is close to the end, and the end is docked on the slide bar 502, that is, the force arm length of the input end is much smaller than the force arm length of the output end, this makes it easier for the longer end to deflect and displace more, that is, to amplify the displacement of the slide bar 502. At the same time, the longer end of the deflected rotating lever 504 deflects along the end face of the fan-shaped scale plate 507, which makes it convenient for the operator to read the relevant deflection value and to determine the deformation of the boring bar 403.

[0042] In some specific embodiments, the alarm mechanism includes a pressure sensing switch 506 and an alarm. The pressure sensing switch 506 is installed at the end of the slide bar 502 away from the boring bar 403, and the pressure sensing switch 506 is aligned with the corresponding rotating lever 504. It should be noted that when the rotating lever 504 is in the initial position, there is a certain gap between it and the pressure sensing switch 506 and there is no contact, or there is contact, but the extrusion force generated does not reach the set value. The alarm is electrically connected to the pressure sensing switch 506 on each slide bar 502. The alarm is installed in a place that is easy for the operator to find. When the slide bar 502 at the corresponding position rises due to the deformation of the boring bar 403, its end contacts the corresponding rotating lever 504, causing the corresponding pressure sensing switch 506 to be squeezed, thereby facilitating feedback, causing the alarm to sound an alarm.

[0043] In some specific embodiments, such as Figure 5 and Figure 6 As shown, each set of automatic separation mechanism 600 includes a support rail 601, an upper slide 602, a lower slide and a lifting column 609; there are two sets of support rails 601, which are symmetrically fixed on both sides of the processing table 100, the upper slide 602 is slidably connected to the support rails 601, and the upper slide 602 is fixedly connected to one of the semi-ring bodies 501 of the automatic detection mechanism 500, the lower slide is slidably connected to the support rails 601, the lifting column 609 is vertically fixedly connected to the lower slide, and the lifting column 609 is connected to the other half of the automatic detection mechanism 500 through a bracket. The semi-ring bodies 501 are fixedly connected, a support spring 604 is connected between the lower slide and the bottom end of the support guide rail 601, a linkage gear set is arranged between the upper slide 602 and the lower slide, and a through opening 607 corresponding to the boring tool mechanism 400 is opened on the processing table 100. The through opening 607 is connected to the linkage rotating plate 608 through the rotating shaft at a position close to the positioning and fixing mechanism 200, and the linkage rotating plate 608 is mounted on the lifting column 609. A linkage push rod 700 that moves synchronously with the boring tool mechanism 400 is arranged on one side of the linkage rotating plate 608.

[0044] Among them, the linkage gear group includes a transmission gear 605, an upper rack 603 and a lower rack 606. The upper rack 603 is fixedly connected to the upper slide 602, and the lower rack 606 is fixedly connected to the lower slide. Specifically, the upper rack 603 and the lower rack 606 can be distributed at the corresponding end positions of the slide to avoid hindering the lateral movement of the boring tool mechanism 400; the transmission gear 605 is rotatably connected to the processing table 100 through a rotating shaft. Specifically, a notch can be opened at the edge of the processing table 100 so that the transmission gear 605 is installed at the notch position, and the upper rack 603 and the lower rack 606 are respectively engaged with the two sides of the transmission gear 605.

[0045] When the boring tool mechanism 400 moves with the boring bar 403 laterally close to the fixed differential housing 300, the boring bar 403 moves laterally relative to the spliced ​​semi-ring body 501 to perform a straightness test. During this process, the linkage push rod 700 moves together with the boring tool mechanism 400 and has not yet been squeezed onto the linkage rotating plate 608. When the boring bar 403 moves laterally relative to the spliced ​​semi-ring body 501 to reach the corresponding position and the test is just completed, the linkage push rod 700 just squeezes and contacts the linkage rotating plate 608, and the linkage rotating plate 608 rotates, thereby generating a downward squeezing force on the lifting column 609, promoting The lifting column 609 slides down along the support guide rail 601 with the help of the lower slide frame, and the support spring 604 is compressed. The lifting column 609 drives the lower semi-ring body 501 to descend. At the same time, the lower slide frame drives the lower rack 606 to descend. The lower rack 606 drives the transmission gear 605 to rotate, and the transmission gear 605 drives the upper rack 603 to rise. The upper rack 603 drives the upper semi-ring body 501 to rise through the upper slide frame 602. That is, the upper and lower semi-ring bodies 501 move synchronously in opposite directions to achieve separation and disengagement from the boring bar 403, thereby avoiding interference with the boring bar 403 moving laterally to drive the drilling and boring tool 404 to perform boring.

[0046] It should be noted that a ball bearing is movably embedded in the top of the lifting column 609 to facilitate relative sliding when contacting the linkage rotating plate 608.

[0047] In some embodiments, combined Figure 1 and Figure 2 As shown, the boring tool mechanism 400 also includes a main hydraulic telescopic rod 401 and a slide 402. The main hydraulic telescopic rod 401 is installed on the processing table 100, and the telescopic end of the main hydraulic telescopic rod 401 is positioned toward the differential housing 300. The slide 402 is fixedly connected to the telescopic end of the main hydraulic telescopic rod 401. A driving motor for driving the boring bar 403 to rotate is fixedly installed in the slide 402. The main hydraulic telescopic rod 401 drives the slide 402 to move, thereby driving the boring bar 403 to move, so as to facilitate the completion of the boring operation.

[0048] In some other specific embodiments, a guide rail is installed on the processing table 100, and the slide 402 is slidably connected to the guide rail. The guide rail guides the slide 402 and supports the slide 402.

[0049] In some specific embodiments, such as Figure 10As shown, the processing device also includes a shutdown switch mechanism 800 for controlling the shutdown of the main hydraulic telescopic rod 401. The shutdown switch mechanism 800 includes an electric telescopic rod 801, a movable conductive contact 802 and a fixed conductive contact 803. The movable conductive contact 802 is connected to the telescopic end of the electric telescopic rod 801, and the movable conductive contact 802 is in contact with the fixed conductive contact 803. The movable conductive contact 802 and the fixed conductive contact 803 are connected in series in the control circuit of the main hydraulic telescopic rod 401 through a wire. The alarm mechanism is electrically connected to the electric telescopic rod 801, specifically relying on the pressure sensing switch 506 of the alarm mechanism to be electrically connected to the electric telescopic rod 801. The control circuit is connected to the power supply and the start-stop control switch. Normally, Under the action of the start / stop control switch on the main hydraulic telescopic rod 401, the movable conductive contact 802 contacts the fixed conductive contact 803, and the main hydraulic telescopic rod 401 can be normally controlled to extend and retract through the start / stop control switch on the corresponding control circuit. When the main hydraulic telescopic rod 401 drives the slide 402 to drive the boring rod 403 to move horizontally, the boring rod 403 performs straightness detection. When there is deformation at the corresponding position of the boring rod 403, the corresponding slide 502 slides, which causes the corresponding pressure sensing switch 506 to be squeezed. The pressure sensing switch 506 not only activates the control alarm, but also contracts the electric telescopic rod 801. The electric telescopic rod 801 drives the movable conductive contact 802 to move away from the fixed conductive contact 803, thereby causing the operating circuit of the main hydraulic telescopic rod 401 to stop urgently.

[0050] In some specific embodiments, the positioning and fixing mechanism 200 includes a secondary hydraulic telescopic rod 201 and a positioning mold 202. The positioning mold 202 is fixedly installed on the processing table 100 and is located between the two sets of boring tool mechanisms 400. The positioning mold 202 cooperates with the differential housing 300, and the differential housing 300 can be adapted to fit on the positioning mold 202; the secondary hydraulic telescopic rod 201 is fixedly installed on the processing table 100 through a bracket, and the telescopic end of the secondary hydraulic telescopic rod 201 is aligned with the positioning mold 202. When the differential housing 300 is installed on the positioning mold 202, the secondary hydraulic telescopic rod 201 is controlled to extend, and a pressure block can be added to the telescopic end of the secondary hydraulic telescopic rod 201 to facilitate the fixing and pressing of the differential housing 300.

[0051] To facilitate understanding of the embodiments of this solution by those skilled in the art, the working principle of this solution is briefly described in conjunction with specific application scenarios:

[0052] First, the differential housing 300 is mounted on the positioning mold 202, and then the auxiliary hydraulic telescopic rod 201 is controlled to extend to fix and press the differential housing 300. Then, the main hydraulic telescopic rods 401 of the two boring tool mechanisms 400 are controlled to extend synchronously by the corresponding control switch. In this way, the slides 402 of the two boring tool mechanisms 400 drive the boring bars 403 to start moving horizontally close to the differential housing 300, and the drilling boring tools 404 on the boring bars 403 move synchronously. During this process, the boring bars 403 The ends of the slide bars 502 on the complete ring body slide along the surface of the boring bar 403. If a certain section of the boring bar 403 is bent and deformed, the slide bar 502 at the corresponding position will slide outward relative to the semi-ring body 501 due to the compression of the arched position, thereby pushing the corresponding end of the rotating lever 504 to deflect. Since the rotating fulcrum around which the rotating lever 504 rotates is close to the end, and the end is docked with The lever 504 of the sliding rod 502 is rotated along the end face of the fan-shaped scale plate 507, so that the operator can read the relevant deflection value at that time and determine the deformation of the boring bar 403. At the same time, the corresponding sliding end of the sliding rod 502 contacts the corresponding rotating lever 504, causing the corresponding pressure sensing switch 506 to be squeezed, thereby generating feedback and causing the alarm to sound an alarm. The pressure sensing switch 506 also causes the electric telescopic rod 801 to contract, and the electric telescopic rod 801 drives the movable conductive contact 802 to move away from the fixed conductive contact 803, thereby causing the main hydraulic telescopic rod 401 operation circuit to stop in an emergency, which is convenient for timely processing and avoids boring when there is a problem with the coaxiality of the two sets of boring bars 403, resulting in a problem with the coaxiality of the pin hole.

[0053] If the boring tool mechanism 400 moves the boring bar 403 laterally to the fixed differential case 300 and there is no problem in the detection, and the linkage push rod 700 moves with the boring tool mechanism 400, when the boring bar 403 moves laterally to the corresponding position relative to the semi-ring body 501 spliced ​​together, and the overall length detection of the boring bar 403 is just completed, the linkage push rod 700 is pressed and contacted with the linkage rotating plate 608, and the linkage rotating plate 608 rotates, thereby generating a downward squeezing force on the lifting column 609, prompting the lifting column 609 to slide down along the support guide rail 601 by relying on the lower frame, and compressing the support spring 604, the lifting column 609 drives the lower semi-ring body 501 to descend, and at the same time the lower frame drives the lower rack 6 06 descends, the lower rack 606 drives the transmission gear 605 to rotate, and the transmission gear 605 drives the upper rack 603 to rise, and the upper rack 603 drives the upper semi-ring body 501 to rise through the upper slide 602, that is, the upper and lower semi-ring bodies 501 move synchronously in opposite directions to achieve separation and disengage from the boring bar 403, thereby avoiding interference with the boring bar 403 moving laterally to drive the drilling and boring tool 404 to approach the differential housing 300 for boring. After the drilling and boring tool 404 approaches the differential housing 300, the corresponding drive motor is started, so that the boring bar 403 drives the drilling and boring tool 404 to rotate at high speed, and the drilling and boring tools 404 of the two sets of boring tool mechanisms 400 simultaneously drill coaxially distributed holes on both sides of the differential housing 300.

[0054] The above disclosures are only a few specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the scope of protection of the present invention.

Claims

1. A new energy vehicle differential pin hole processing device, comprising a processing table (100), two sets of boring tool mechanisms (400) symmetrically distributed on both sides of the processing table (100), and a positioning and fixing mechanism (200) for fixing a differential housing (300), wherein each set of the boring tool mechanisms (400) comprises a drilling boring tool (404) and a boring bar (403) for fixing and mounting the drilling boring tool (404), characterized in that: Also includes: An automatic detection mechanism (500) is provided with two groups, and the automatic detection mechanism (500) is correspondingly matched with the boring bar (403). The automatic detection mechanism (500) is used to detect the straightness of the corresponding boring bar (403); the automatic detection mechanism (500) includes a semi-ring body (501) and a sliding detection mechanism. The semi-ring body (501) is provided with two groups, and each semi-ring body (501) has multiple groups of the sliding detection mechanisms evenly distributed on it; each group of the sliding detection mechanisms is equipped with an alarm mechanism; An automatic separation mechanism (600) is provided in two groups and is arranged in correspondence with the automatic detection mechanism (500). The automatic separation mechanism (600) is used to drive the two semi-ring bodies (501) of the automatic detection mechanism (500) to move longitudinally and separate.

2. A new energy vehicle differential pin hole processing device according to claim 1, characterized in that: Each group of the sliding detection mechanisms includes a slide bar (502) and a limit spring (503). The slide bar (502) slides through the corresponding semi-ring body (501), and the slide bar (502) is also connected to the corresponding semi-ring body (501) through the limit spring (503). Each group of the alarm mechanisms is respectively arranged at the end of the corresponding slide bar (502) away from the boring bar (403), and a lever amplification mechanism is also arranged at the end of the slide bar (502) away from the boring bar (403).

3. The new energy vehicle differential pin hole processing device according to claim 2, characterized in that: The lever amplification mechanism includes an axis frame (505), a rotating lever (504) and a fan-shaped scale plate (507), wherein the axis frame (505) is fixedly connected to the outer wall of the corresponding semi-ring body (501), and the axis frame (505) is parallel to the corresponding slide bar (502), and a connecting shaft is rotatably connected to the axis frame (505), and the position of the rotating lever (504) near the end is fixedly connected to the connecting shaft, and a disc spring is matched between the connecting shaft and the axis frame (505), and the end of the rotating lever (504) near the connecting shaft is matched to the end of the corresponding slide bar (502) away from the boring bar (403), and the fan-shaped scale plate (507) is fixedly connected to one side of the axis frame (505), and the rotating lever (504) matches the fan-shaped scale plate (507).

4. A new energy vehicle differential pin hole processing device according to claim 3, characterized in that: The alarm mechanism includes a pressure sensing switch (506) and an alarm. The pressure sensing switch (506) is installed at one end of the slide bar (502) away from the boring bar (403), and the pressure sensing switch (506) is aligned with the corresponding rotating lever (504). The alarm is electrically connected to the pressure sensing switch (506) on each slide bar (502).

5. The new energy vehicle differential pin hole processing device according to claim 2, characterized in that: Each group of the automatic separation mechanism (600) includes a support rail (601), an upper slide (602), a lower slide and a lifting column (609); the support rail (601) is provided with two groups and is symmetrically fixedly arranged on both sides of the processing table (100); the upper slide (602) is slidably connected to the support rail (601), and the upper slide (602) is fixedly connected to one of the semi-ring bodies (501) of the automatic detection mechanism (500); the lower slide is slidably connected to the support rail (601), the lifting column (609) is vertically fixedly connected to the lower slide, and the lifting column (609) is fixedly connected to the lower slide of the automatic detection mechanism (500). The other half ring body (501) is fixedly connected, a support spring (604) is connected between the lower slide and the bottom end of the support guide rail (601), a linkage gear set is arranged between the upper slide (602) and the lower slide, and a through opening (607) corresponding to the boring tool mechanism (400) is opened on the processing table (100), and the through opening (607) is rotatably connected to a linkage rotating plate (608) near the position of the positioning and fixing mechanism (200), and the linkage rotating plate (608) is mounted on the lifting column (609), and a linkage push rod (700) that moves synchronously with the boring tool mechanism (400) is arranged on one side of the linkage rotating plate (608).

6. The new energy vehicle differential pin hole processing device according to claim 5, characterized in that: The linkage gear set includes a transmission gear (605), an upper rack (603) and a lower rack (606), wherein the upper rack (603) is fixedly connected to the upper slide (602), and the lower rack (606) is fixedly connected to the lower slide, and the transmission gear (605) is rotationally connected to the processing table (100), and the upper rack (603) and the lower rack (606) are respectively engaged with two sides of the transmission gear (605).

7. The new energy vehicle differential pin hole processing device according to claim 1, characterized in that: The boring tool mechanism (400) further comprises a main hydraulic telescopic rod (401) and a slide (402), wherein the main hydraulic telescopic rod (401) is mounted on the processing table (100), the slide (402) is fixedly connected to the telescopic end of the main hydraulic telescopic rod (401), and a driving motor for driving the boring bar (403) to rotate is fixedly mounted in the slide (402).

8. The new energy vehicle differential pin hole processing device according to claim 7, characterized in that: A guide rail is installed on the processing table (100), and the slide seat (402) is slidably connected to the guide rail.

9. The new energy vehicle differential pin hole machining device according to claim 7, characterized in that: The invention also includes a shutdown switch mechanism (800) for controlling the shutdown of the main hydraulic telescopic rod (401), wherein the shutdown switch mechanism (800) includes an electric telescopic rod (801), a movable conductive contact (802) and a fixed conductive contact (803), wherein the movable conductive contact (802) is connected to the telescopic end of the electric telescopic rod (801), and the movable conductive contact (802) is in contact with the fixed conductive contact (803), wherein the movable conductive contact (802) and the fixed conductive contact (803) are connected in series to the control circuit of the main hydraulic telescopic rod (401), and the alarm mechanism is electrically connected to the electric telescopic rod (801).

10. The new energy vehicle differential pin hole processing device according to claim 1, characterized in that: The positioning and fixing mechanism (200) comprises a secondary hydraulic telescopic rod (201) and a positioning die (202); the positioning die (202) is fixedly mounted on the processing table (100) and is located between the two sets of boring tool mechanisms (400); the positioning die (202) cooperates with the differential housing (300); the secondary hydraulic telescopic rod (201) is fixedly mounted on the processing table (100), and the telescopic end of the secondary hydraulic telescopic rod (201) is aligned with the positioning die (202).

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