Automobile balance shaft module gear backlash automatic detection machine

Abstract

The utility model relates to the field of automatic detection of gear backlash, in particular to an automatic detection machine for gear backlash of an automobile balance shaft module, which comprises a tray jacking mechanism, a bearing pressing mechanism, a balance shaft pressing mechanism, a servo rotating mechanism and a backlash detection mechanism. According to the utility model, through an on-line detection mode, the servo motor and the contact type displacement sensor are matched for measurement, and efficient and accurate backlash detection is realized in combination with an automatic mechanism. The method can significantly improve the detection efficiency, reduces the manual misreading, guarantees the accuracy and reliability of measurement data, and has higher technical advantages and application values.

Description

Technical Field

[0001] This utility model belongs to the field of gear backlash detection technology, specifically an automatic detection device for gear backlash in automotive balance shaft modules. Background Technology

[0002] In mechanical transmission systems, the meshing performance of gears directly affects the smoothness of equipment operation and service life. To ensure that a lubricating oil film can be formed during gear meshing and to prevent jamming due to frictional heat expansion, a certain backlash must be maintained between gears. Proper control of backlash is crucial for ensuring the accuracy and reliability of gear transmission. However, traditional backlash detection methods mainly rely on the lead wire pressing method or the dial indicator method. The lead wire pressing method determines the backlash value by placing a lead wire on the tooth surface, pressing it, and measuring its thickness. The dial indicator method obtains the backlash value by fixing one gear and measuring the swing angle of the other gear or by directly reading the difference in values ​​on a dial indicator. While these traditional methods can meet the detection requirements to some extent, they have significant shortcomings. For example, the lead wire pressing method is cumbersome and easily affected by human factors, leading to inaccurate measurement results; the dial indicator method requires manual reading and judgment, which is prone to misreading, and is also inefficient, making it difficult to meet the high efficiency and high precision requirements of modern industrial production. Furthermore, traditional inspection methods typically require individual inspection of workpieces after they have come off the production line, increasing process complexity and time costs, and further reducing production efficiency. Therefore, developing an online, automated device for detecting gear backlash to improve inspection efficiency and accuracy, reduce human intervention, and achieve digital and real-time display of measurement results has become a pressing technical challenge. Utility Model Content

[0003] The purpose of this utility model is to provide an automatic detection machine for the backlash of gears in an automotive balance shaft module, which solves the problems mentioned in the background art.

[0004] This utility model is implemented as follows: an automatic gear backlash detection machine for automotive balance shaft modules includes a pallet lifting mechanism, a bearing clamping mechanism, a balance shaft clamping mechanism, a servo rotation mechanism, and a backlash detection mechanism. Specifically: the pallet lifting mechanism is mounted on the frame panel, located in the middle of the circulation line, and is used to lift the pallet to a specified height; the bearing clamping mechanism is mounted on the frame panel via a guide rod and is used to clamp the bearings of the balance shaft module; the balance shaft clamping mechanism is mounted on the movable plate of the bearing clamping mechanism and is used to clamp the driven shaft of the balance shaft module; the servo rotation mechanism is integrally mounted on the frame plate and is used to adjust the pin angle and insert it into corresponding holes; the backlash detection mechanism includes a detection head lifting cylinder, a detection mechanism lifting seat, a detection head, and a contact displacement sensor for measuring and recording the gear backlash value.

[0005] The further technical scheme of the utility model discloses: tray jacking mechanism still includes positioning cylindrical pin and positioning diamond pin, for ensuring that tray each time parking position is consistent.

[0006] The further technical scheme of the utility model discloses: tray jacking mechanism further includes four groups of linear bearing and guide rod, for guaranteeing that jacking mechanism stress is even.

[0007] The further technical scheme of the utility model discloses: bearing pressing mechanism still includes oil pressure buffer, for reducing the influence of rigid impact to equipment.

[0008] The further technical scheme of the utility model discloses: bearing pressing mechanism further includes finger air cylinder, for gently pushing detection head and making it accurate positioning to tooth root part.

[0009] The further technical scheme of the utility model discloses: servo rotating mechanism still includes pin hole insertion proximity switch, for judging whether pin is correctly aligned hole position.

[0010] The further technical scheme of the utility model discloses: side gap detection mechanism still includes slot photoelectricity, for detecting height detection block to judge whether detection head is accurately fallen into tooth root.

[0011] The specific implementation mode of the utility model is as follows:

[0012] S1. after tray reaches the specified position, the cylinder in tray jacking mechanism extends, and tray is jacked to the specified height. Positioning cylindrical pin and positioning diamond pin cooperate to ensure that tray position is fixed.

[0013] S2. after tray jacking is in position, the pressing cylinder of bearing pressing mechanism extends, and bearing pressing block and the bearing of balance shaft module contact and are pressed. Oil pressure buffer provides buffering action when mechanism moves up and down, and reduces rigid impact.

[0014] S3. after bearing pressing is completed, the cylinder of balance shaft pressing mechanism extends, and balance shaft module from driving shaft is pressed. Guide rod and guide rod connecting plate cooperate to ensure that pressing action is stable and reliable.

[0015] S4. the forward cylinder of servo rotating mechanism push mechanism moves forward along linear guide rail, and pin big and pin small respectively enter corresponding hole position. If not aligned hole position, servo motor rotates and adjusts angle until pin inserts hole position, and pin hole insertion proximity switch output signal confirms alignment state.

[0016] S5. The detection head of the side clearance detection mechanism is lowered, and the detection head enters the tooth root. The groove photoelectric detection height detection block is used to determine whether the detection head is accurately dropped into the tooth root. The finger cylinder gently pushes the detection head when the detection head does not enter the tooth root, so as to ensure accurate positioning. The servo motor rotates counterclockwise, and after the torque sensor value is zeroed, the servo motor rotates clockwise, the data of the contact displacement sensor is recorded, and the side clearance value is calculated according to a predetermined formula.

[0017] Advantages:

[0018] The automobile balance shaft module gear side clearance automatic detection equipment provided by the utility model reduces the workpiece online and offline frequency, significantly shortens the detection time, and improves the detection efficiency. The full-automatic digital measurement replaces the traditional marking and lead wire measurement method, the measurement result is displayed in real time, the display is intuitive and convenient for management. The servo motor is used in cooperation with the contact displacement sensor, so that the measurement data is accurate and reliable. The whole line adopts centralized power supply and gas supply mode, which is convenient to operate and simple to maintain. In summary, the utility model realizes efficient and accurate detection of the automobile balance shaft module gear side clearance, and has significant technical advantages and application value. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a tray jacking mechanism structural schematic view of the utility model;

[0020] Figure 2 It is a bearing pressing mechanism structural schematic view of the utility model;

[0021] Figure 3 It is a balance shaft pressing mechanism structural schematic view of the utility model;

[0022] Figure 4 It is a servo rotating mechanism structural schematic view of the utility model;

[0023] Figure 5 It is a side clearance detection mechanism structural schematic view of the utility model;

[0024] Figure 6 It is a front view of the automobile balance shaft module gear side clearance automatic detection machine of the utility model;

[0025] Figure 7 It is a side view of the automobile balance shaft module gear side clearance automatic detection machine of the utility model.

[0026] Reference signs:

[0027] 1, tray jacking mechanism; 2, cylinder; 3, floating joint; 4, tray support plate; 5, positioning cylindrical pin; 6, positioning diamond pin; 7, linear bearing; 8, guide rod; 9, limiting clamping block;

[0028] 10, limit block; 11, bearing pressing mechanism; 12, pressing cylinder; 13, floating joint; 14, linear bearing; 15, guide rod; 16, balance shaft module housing pressing rod; 17, oil buffer; 18, finger cylinder; 19, bearing pressing block; 20, balance shaft pressing mechanism; 21, cylinder; 22, floating joint; 23, linear bearing; 24, guide rod; 25, pressing block; 26, guide rod connecting plate; 27, oil buffer; 28, servo rotating mechanism; 29, rotating shaft air cylinder; 30, linear guide rail; 31, servo motor; 32, torque sensor; 33, bearing seat; 34, deep groove ball bearing; 35, rotating shaft; 36, pin mounting shaft; 37, pin large; 38, pin small; 39, rotating shaft origin proximity switch; 40, pin hole insertion proximity switch; 41, side gap detection mechanism; 42, detection head lifting cylinder; 43, detection mechanism lifting seat; 44, cross roller guide; 45, height detection block; 46, groove photoelectric; 47, detection block; 48, detection rotating shaft; 49, detection head; 50, contact displacement sensor; 51, finger cylinder. DETAILED DESCRIPTION

[0029] The other advantages and effects of the present application can be easily understood by those skilled in the art from the content disclosed in the present specification. The present application can also be implemented or applied in other different specific embodiments, and the details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present application.

[0030] It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to the present specification are only used to cooperate with the content disclosed in the present specification for understanding and reading by those skilled in the art, and do not have technical substantive significance for defining the implementation conditions of the present application, so any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects and purposes that can be produced by the present application, should still fall within the scope of the technical content disclosed by the present application. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" etc. cited in the present specification are only for the convenience of clear understanding and reading, and are not used to limit the implementation range of the present application, and the change or adjustment of the relative relationship without substantially changing the technical content should also be considered as the implementation scope of the present application.

[0031] The utility model provides a kind of automobile balance shaft module gear side gap automatic detection machine, its overall structure is composed of tray jacking mechanism 1, bearing compression mechanism 11, balance shaft compression mechanism 20, servo rotating mechanism 28 and side gap detection mechanism 41.The mechanism is cooperated by mechanical connection and electrical control and works, realizes the efficient automatic detection of automobile balance shaft module gear side gap. Figure 1 To attached Figure 7 , detailed description of the specific embodiment of the utility model.

[0032] Tray jacking mechanism 1 is installed on rack panel, is located in the intermediate position of multiple-speed chain conveying line, for lifting tray 10 from conveying line to specified height.The core components of tray jacking mechanism 1 include cylinder 2, floating joint 3, tray support plate 4, positioning cylindrical pin 5, positioning diamond pin 6, linear bearing 7 and guide rod 8.When tray 10 reaches specified position, cylinder 2 extends and drives tray support plate 4 to move upwards by floating joint 3, to lift tray 10.The design of floating joint 3 makes the lifting process have certain floating capacity, effectively reduces the requirement of machining and installation precision.Meanwhile, positioning cylindrical pin 5 and positioning diamond pin 6 are matched through small gap, ensure that the position of tray 10 is consistent each time, avoid that subsequent detection operation is influenced due to position deviation.To ensure that jacking mechanism is stressed evenly, tray jacking mechanism 1 adopts the combined design of four linear bearings 7 and four guide rods 8, so that tray 10 keeps stable operation during lifting.

[0033] Bearing compression mechanism 11 is installed on rack panel by guide rod 15, and its core components include compression cylinder 12, floating joint 13, linear bearing 14, guide rod 15, balance shaft module shell compression rod 16, oil buffer 17 and finger cylinder 18.After tray jacking is in place, bearing compression mechanism 11 starts to work.Compression cylinder 12 drives the whole mechanism to move up and down by floating joint 13, to ensure that bearing compression block 19 can accurately contact and compress the bearing of balance shaft module.To improve the stability of mechanism operation, bearing compression mechanism 11 also adopts the combined design of four linear bearings 14 and four guide rods 15.Oil buffer 17 is arranged in mechanism, to reduce the influence of rigid impact on equipment, prolong the service life of equipment.In addition, finger cylinder 18 is configured at the end of mechanism, to push detection head 49 when detection head 49 does not enter tooth root, so that it is accurately positioned to tooth root part.

[0034] The cylinder 21 of the balance shaft pressing mechanism 20 is installed on the movable plate of the bearing pressing mechanism 11, and the core components thereof include the cylinder 21, the floating joint 22, the linear bearing 23, the guide rod 24, the pressing block 25, the guide rod connecting plate 26 and the oil pressure buffer 27. When the bearing pressing mechanism 11 completes the pressing of the bearing, the balance shaft pressing mechanism 20 starts to work. The cylinder 21 is connected with the mounting plate of the pressing block 25 through the floating joint 22, and the design of the floating joint 22 compensates the installation error and improves the reliability of the pressing action. The guide rod 24 cooperates with the guide rod connecting plate 26 to ensure that the pressing block 25 keeps stable during the descending process. The oil pressure buffer 27 is used to adjust the height of the balance shaft pressing mechanism 20 to avoid the damage of the parts caused by the excessive impact force.

[0035] The servo rotating mechanism 28 is integrally installed on the rack plate, and the core components thereof include the rotating shaft forward cylinder 29, the linear guide rail 30, the servo motor 31, the torque sensor 32, the bearing seat 33, the deep groove ball bearing 34, the rotating shaft 35, the pin mounting shaft 36, the large pin 37, the small pin 38, the rotating shaft origin proximity switch 39 and the pin hole insertion proximity switch 40. When the tray lifting mechanism 1 lifts the tray 10 to the position, and the bearing pressing mechanism 11 and the balance shaft pressing mechanism 20 respectively complete the pressing of the bearing and the driven shaft, the servo rotating mechanism 28 starts to work. The rotating shaft forward cylinder 29 drives the whole mechanism to move forward along the linear guide rail 30, so that the large pin 37 and the small pin 38 respectively enter the corresponding hole positions. The pin hole insertion proximity switch 40 is used to judge whether the pins are correctly aligned with the hole positions. If the pins are not aligned with the hole positions, the servo motor 31 will rotate by a certain angle to adjust the position of the pins until the large pin 37 and the small pin 38 respectively enter the corresponding hole positions. At this time, the spring inside the pin mounting shaft 36 is reset, and the pin hole insertion proximity switch 40 outputs a signal to confirm the alignment state.

[0036] The side gap detection mechanism 41 is the core detection component of the utility model, and the core components thereof include the detection head lifting cylinder 42, the detection mechanism lifting seat 43, the cross ball guide rail 44, the height detection block 45, the slot photoelectricity 46, the detection block 47, the detection rotating shaft 48, the detection head 49 and the contact type displacement sensor 50. When the servo rotating mechanism 28 completes the pin alignment, the side gap detection mechanism 41 starts to work. The detection head lifting cylinder 42 drives the detection mechanism lifting seat 43 to descend, so that the detection head 49 enters the dedendum. The slot photoelectricity 46 judges whether the detection head 49 accurately falls into the dedendum by detecting the height detection block 45. If the detection head 49 does not enter the dedendum, the finger cylinder 18 will gently push the detection head 49 to accurately position it to the dedendum. Subsequently, the servo motor 31 rotates counterclockwise, and after the value of the torque sensor 32 is reset, the servo motor 31 rotates clockwise until the value of the torque sensor 32 reaches the specified value again. The contact type displacement sensor 50 records the relevant data, and calculates the size of the side gap value according to the predetermined formula.

[0037] The specific operation process is as follows: S1. After the tray 10 reaches the specified position through the speed chain conveying line, the cylinder 2 in the tray jacking mechanism 1 extends, and the tray 10 is jacked to the specified height. The positioning cylindrical pin 5 and the positioning diamond pin 6 cooperate to ensure that the position of the tray 10 is fixed. S2. After the tray is jacked to the position, the pressing cylinder 12 of the bearing pressing mechanism 11 extends, so that the bearing pressing block 19 is in contact with and pressed against the bearing of the balance shaft module. The oil buffer 17 provides a buffering effect when the mechanism moves up and down, reducing the rigid impact. S3. After the bearing pressing is completed, the cylinder 21 of the balance shaft pressing mechanism 20 extends, and the balance shaft module from the shaft is pressed. The guide rod 24 and the guide rod connecting plate 26 work together to ensure that the pressing action is stable and reliable. S4. The rotating shaft forward cylinder 29 of the servo rotating mechanism 28 pushes the mechanism to move forward along the linear guide rail 30, so that the pin 37 and the pin 38 respectively enter the corresponding hole position. If the hole position is not aligned, the servo motor 31 rotates to adjust the angle until the pin is inserted into the hole position, and the pin hole is inserted into the proximity switch 40 to output a signal to confirm the alignment state. S5. The detection head lifting cylinder 42 of the side gap detection mechanism 41 is lowered, so that the detection head 49 enters the tooth root. The groove photoelectric 46 detects the height detection block 45 to determine whether the detection head 49 accurately falls into the tooth root. The finger cylinder 18 gently pushes the detection head 49 when the detection head 49 does not enter the tooth root, so as to ensure accurate positioning. The servo motor 31 rotates counterclockwise, the torque sensor 32 value is zeroed, and then the servo motor 31 rotates clockwise, the data of the contact displacement sensor 50 is recorded, and the side gap value is calculated according to the predetermined formula.

[0038] The utility model discloses through above -mentioned structure and process, realized to the high -efficient automation detection of automobile balance shaft module gear side gap. The whole line adopts the centralized power supply gas supply mode, and the operation is convenient, and the maintenance is simple. The shroud uses aluminum profile design, and the left and right sides are not closed, and it is convenient to observe and overhaul. The operation panel is inlaid in the right side of the front, and it is convenient for operating personnel to carry out parameter setting and equipment monitoring. In conclusion, the utility model not only improves the detection efficiency significantly, but also ensures the accuracy and reliability of the measurement result, and has wide application prospect.

[0039] The above only is the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement and improvement etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A machine for automatically detecting gear side play of a module gear of a balance shaft of an automobile, characterized by, The device comprises a tray lifting mechanism (1), a bearing pressing mechanism (11), a balance shaft pressing mechanism (20), a servo rotating mechanism (28) and a side gap detection mechanism (41), wherein: the tray lifting mechanism (1) is installed on the rack panel and located at the middle position of the circulation line, used for lifting the tray to the specified height; the bearing pressing mechanism (11) is installed on the rack panel through the guide rod (15), used for pressing the bearing of the balance shaft module; the balance shaft pressing mechanism (20) is installed on the movable plate of the bearing pressing mechanism (11), used for pressing the driven shaft of the balance shaft module; the servo rotating mechanism (28) is integrally installed on the rack panel, used for adjusting the angle of the pin and inserting into the corresponding hole position; the side gap detection mechanism (41) comprises a detection head lifting cylinder (42), a detection mechanism lifting seat (43), a detection head (49) and a contact type displacement sensor (50), used for measuring and recording the gear side gap value.

2. The automotive balance shaft module gear side play automatic detection machine of claim 1, wherein, The tray lifting mechanism (1) further comprises a positioning cylindrical pin (5) and a positioning diamond pin (6), used for ensuring the consistency of the stopping position of the tray each time.

3. The automotive balance shaft module gear side play automatic detection machine of claim 2, wherein, The tray lifting mechanism (1) further comprises four groups of linear bearings (7) and guide rods (15), used for ensuring the uniform stress of the lifting mechanism.

4. The automotive balance shaft module gear side play automatic detection machine of claim 1, wherein, The bearing pressing mechanism (11) further comprises an oil buffer (17), used for reducing the impact of rigid impact on the equipment.

5. The automotive balance shaft module gear side play automatic detection machine of claim 4, wherein, The bearing pressing mechanism (11) further comprises a finger cylinder (18), used for gently pushing the detection head (49) to accurately position the tooth root part.

6. The automotive balance shaft module gear side play automatic detection machine of claim 1, wherein, The servo rotating mechanism (28) further comprises a pin hole insertion proximity switch (40), used for judging whether the pin is correctly aligned with the hole position.

7. The automotive balance shaft module gear side play automatic detection machine of claim 1, wherein, The side gap detection mechanism (41) further comprises a slot photoelectric (46), used for detecting the height detection block (45) to judge whether the detection head (49) accurately falls into the tooth root.

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