Tapping machine, hub inclined hole machining equipment and hub machining production line

Abstract

The utility model provides a tapping machine, a hub inclined hole machining device and a hub machining production line, relates to the technical field of machining, and solves the problems that an existing tapping machine and an existing hub inclined hole machining device are short in service life and unstable in machining. A driving assembly used for driving a feeding gear shaft to rotate is fixed to a machine head, a first driving plate is coaxially fixed to the feeding gear shaft, a first driving block protrudes out of the first driving plate, and a second driving plate capable of rotating in the circumferential direction is arranged on the driving assembly. The second driving plate and the first driving plate are coaxially arranged, a second driving block which can form blocking with the first driving block in the turnover direction is arranged on the second driving plate in a protruding mode, the first driving block and the second driving block can rotate in a relatively separated mode, and an elastic buffering piece is arranged between the first driving block and the second driving block, so that the cutter can be well protected against abrasion or damage caused by hard contact through the design. Therefore, the service life of the whole tapping machine is greatly prolonged, and the operation stability is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of machining, in particular to a tapping machine, a wheel hub oblique hole machining device and a wheel hub machining production line. Background Art

[0002] Existing wheel hub oblique hole processing equipment generally integrates a drilling machine, a countersinking machine, and a tapping machine, corresponding to the three processing steps of drilling, countersinking, and tapping. By passing the wheel hub through the oblique hole processing equipment in sequence, a threaded oblique hole can be processed on the wheel hub at one time, eliminating the step of transporting the wheel hub back and forth between various independent machine components and speeding up the efficiency of oblique hole processing. Existing wheel hub oblique hole processing equipment is mostly semi-automatic machines, which are simply a combination of conventional drilling machines, countersinking machines, and tapping machines. Then, a slide is installed on the equipment to drive the wheel hub to be transported to various workstations for processing. During actual processing, workers are required to operate each machine, such as pulling down the handle to lower the tools on the drilling machine, countersinking machine, and tapping machine for corresponding processing, and then raising the handle to remove the tools after processing.

[0003] With the iterative advancement of technology, our company later made corresponding improvements to such equipment. By improving the handles of the drilling machine, countersinking machine and tapping machine, the handles were removed and replaced with a motor-driven structure. The general principle is to connect the motor and the feed gear shaft on the machine head through a coupling, and directly drive the up and down feeding of the tools on the drilling machine, countersinking machine or tapping machine by controlling the rotation of the servo motor, thereby realizing fully automatic processing.

[0004] However, with continuous practice, our company found that such a structure still has great problems, as follows: 1. The motor directly connected to the feed gear shaft will drive the tool at a uniform speed to hard contact with the workpiece, i.e. the wheel hub, and the tool may be destroyed at the moment of contact (the tool is also prone to wear or even damage under long-term hard contact impact); 2. At the end of drilling, countersinking or tapping, the tool will reverse under the control of the host and then exit the processed hole. At the same time, the servo motor that controls the up and down movement of the tool needs to reverse at the same time and then exit upward. If there are two inconsistencies or a drive failure, the tool will be damaged. This situation occurs especially on tapping machines. When retracting the tool, the tapping tool is freely flipped and exits along the processed internal thread. At the same time, if the drive motor is not driven in time or not driven at all, the reverse rotating tapping tool will damage the processed internal thread at best, or even directly damage the tool at worst. Utility Model Content

[0005] The purpose of this utility model is to solve the above problems existing in the prior art and propose a tapping machine, wheel hub oblique hole processing equipment and wheel hub processing production line. The technical problem it aims to solve is that the existing tapping machine and wheel hub oblique hole processing equipment have short service life and unstable processing.

[0006] The purpose of this utility model can be achieved through the following technical solutions:

[0007] A tapping machine comprises a machine head, wherein the machine head has a feed gear shaft for driving the tool to move in the vertical direction, and is characterized in that a driving assembly for driving the feed gear shaft to rotate is fixed to the machine head, a dial 1 is coaxially fixed to the feed gear shaft, a dial block 1 protrudes from the dial 1, and the driving assembly has a dial 2 that can rotate circumferentially, the dial 2 is coaxially arranged with the dial and a dial block 2 protrudes from the dial 2 that can form a resistance with the dial block 1 in the circumferential direction, the dial block 1 and the dial block 2 can rotate relatively separately and an elastic buffer is provided between the dial block 1 and the dial block 2 to reduce the impact of contact between the tool and the workpiece.

[0008] The head of the tapping machine is provided with a feed gear shaft similar to that of a conventional tapping machine. The cutter is driven downward by the rotation of the feed gear shaft. The head of the tapping machine is provided with a driving assembly for driving the feed gear shaft to rotate.

[0009] The drive assembly of the present application is connected and transmitted to the feed gear shaft through dial one and dial two. A shift block one is protruded on the dial one, and a shift block two is protruded on the dial two. When the dial two rotates, the shift block two can drive the shift block two to cooperate with the shift block one, thereby driving the dial one to rotate and then driving the feed gear shaft to rotate. An elastic buffer is installed between the shift block one and the shift block two. During the initial operation, the tool and the workpiece have a certain contact distance at this contact distance. Due to the elastic force of the elastic buffer, the shift block one and the shift block two can be transmitted without abutting contact. At this time, the tool moves downward. When the tool contacts the workpiece, the torque between the shift block one and the shift block two increases, causing the elastic buffer to be compressed and the shift block one and the shift block two move closer to each other to achieve buffering. During this process, the contact force between the tool and the workpiece gradually increases, thereby avoiding damage to the tool due to hard contact. Such a buffering process is used to improve the service life of the tool and also improve the stability during processing. When the elastic buffer is compressed to the limit position or the set position, the tool also presses on the workpiece with a constant pressure to tap downwards. After tapping a certain distance, as long as the drill bit rotates actively, it can tap downwards autonomously driven by the thread. The above design allows a certain buffer time when the tool contacts the workpiece, and even the force when the tool contacts the workpiece gradually increases to the maximum as the elastic buffer is continuously compressed. This tapping process is gentle and stable, and can extremely well protect the tool from wear or damage due to hard contact, thereby greatly improving the service life and operational stability of the overall tapping machine.

[0010] The drive assembly and the feed gear shaft of the present application are connected and transmitted via the dial 1 and the dial 2. Another advantage is that the dial block 1 and the dial block 2 can rotate relatively separately. After the tool enters the hole to be processed, the dial 2 can stop rotating and rotate in the opposite direction to reset. At this time, the dial 1 is still rotating forwardly under the passive drive of the tool. When the tapping is completed, the tool is withdrawn because the dial 1 and the dial 2 rotate in opposite directions during the tapping process, so that the dial 1 and the dial 2 on them are separated from each other, that is, the dial 1 and the dial 2 are driven and separated. In this way, the tool can rotate in the opposite direction and freely withdraw upward by using the tapped internal thread, and drive the dial 1 to rotate in the opposite direction during the withdrawal process. Since the dial 2 is reset in advance, the dial 1 on the dial 1 is not interfered with by the shift block 2 during the reset process and can reset independently. Such a tool withdrawal process can effectively avoid the interference of the drive assembly, which may cause hard friction between the tool and the tapped internal thread, and can effectively avoid wear or even damage to the tool. Such a design further improves the service life and operational stability of the overall machine.

[0011] In the above-mentioned tapping machine, the first shift block protrudes from the end surface of the dial one facing the second shift block, and the second shift block protrudes from the end surface of the dial two facing the first shift block. The first shift block and the second shift block are adjacent to each other in the circumferential direction and are arranged at intervals. The elastic force of the elastic buffer can act on the adjacent sides of the first shift block and the second shift block.

[0012] The shift block 1 and the shift block 2 of the present application are adjacent to each other in the circumferential direction and are arranged at intervals. When the dial block 2 rotates in a single direction, it can drive the shift block 2 to approach the shift block 1 to compress the elastic buffer to realize elastic drive. When the shift block 1 and the shift block 2 move in opposite directions, the elastic buffer cannot transmit power to realize power isolation. This can realize buffered contact and slow pressure between the tool and the workpiece during tapping, and can also realize free rotation of the feed gear shaft when retracting the tool. This design further improves the service life and operational stability of the overall machine.

[0013] In the above-mentioned tapping machine, the elastic buffer is a hydraulic buffer, and a through hole is opened on the side of the second shift block. The elastic buffer is embedded in the through hole and the buffer end of the elastic buffer faces the side of the first shift block. When the second shift block rotates, the buffer end of the elastic buffer can press on the side of the first shift block to form a buffer.

[0014] The hydraulic buffer is directly embedded in the through hole. This installation method can effectively apply the elastic force to the two adjacent shift blocks 1 and 2, which can better buffer and further improve the overall stability.

[0015] In the above-mentioned tapping machine, the elastic buffer is a spring, and the opposite sides of the shift block 1 and the shift block 2 are divided into a receiving groove 1 and a receiving groove 2. The two ends of the spring are respectively embedded in the receiving groove 1 and the receiving groove 2. When the shift block 1 and the shift block 2 are close to each other, the spring can be compressed to form a buffer.

[0016] This is another embodiment of the elastic buffer of the present application. In this embodiment, the elastic buffer is a spring, and the two ends of the spring are respectively connected to the accommodating groove 1 and the accommodating groove 2 on the two adjacent shift blocks 1 and 2. When the shift blocks 1 and 2 are close to each other, the spring can be compressed to achieve a buffering effect. This design can achieve the same technical effect as the above-mentioned scheme.

[0017] In the above-mentioned tapping machine, the driving assembly also includes a cylinder, a gear and a rack. A sleeve seat is mounted on the outside of dial one on the machine head, and a positioning shaft that can rotate circumferentially is axially fixed in the sleeve seat. The positioning shaft is coaxially arranged with the feed gear shaft. Dial two is located on the inner side of the sleeve seat and is fixed to the end of the positioning shaft. The gear is fixed to the other end of the positioning shaft. The cylinder is fixed on the machine head and the rack is connected to the push rod of the cylinder. The rack is driven to reciprocate in a single direction by the cylinder, and the gear is meshed with the rack and driven to rotate by the rack.

[0018] The drive assembly of the present application is driven by a cylinder. A rack is installed on the push rod of the cylinder, and a gear is coaxially connected to the second dial for transmission. The rack is pushed back and forth in a fixed direction by the cylinder, and the rack and the gear are engaged to convert the linear motion into the rotational motion of the gear. The advantage of this design is that the driving stroke of the cylinder is controllable and stable, and the range of each extension and retraction is constant. The accuracy of the rotation control of the gear converted into such linear motion is also very high, which can make the tool stably descend to contact the workpiece and reset. This design further improves the service life and operational stability of the entire machine.

[0019] In the above-mentioned tapping machine, a mounting seat is fixed on the head, a linear guide rail is laid on the mounting seat, the rack is fixed on the slider of the linear guide rail, and the cylinder is fixed on the mounting seat and can push the rack to move back and forth along the arrangement direction of the linear guide rail;

[0020] The arrangement direction of the linear guide rail is perpendicular to the direction of the positioning axis. The slider on the linear guide rail is fixed on the side of the rack, and the bottom of the rack has teeth and is engaged with the gear.

[0021] The rack of the present application is connected to the mounting seat through a linear guide rail, and then driven by a cylinder to guide and slide along the arrangement direction of the linear guide rail. This design makes the overall structure run more stably and smoothly.

[0022] In particular, the slider on the linear guide rail of the present application is fixed on the side of the rack, and the teeth of the rack are at the bottom of the rack. In this way, the slider can provide lateral support to the rack in the front and rear directions to prevent the rack from being laterally disengaged from the gear, thereby increasing stability.

[0023] In the above-mentioned tapping machine, the driving assembly also includes a servo motor, which is fixed on the side of the machine head. A driving gear is fixed on the output shaft of the servo motor, and a driven gear is coaxially connected to the dial 2. The driving gear and the driven gear are meshed for transmission.

[0024] This is another embodiment of the drive assembly of the present application. In this embodiment, the drive assembly drives the driving gear to rotate through a servo motor, and the driving gear transmits power by meshing with the driven gear. This design can achieve a technical effect similar to the above-mentioned solution.

[0025] In the above-mentioned tapping machine, a tool and a tool shaft for driving the tool to rotate are installed on the machine head. The tool shaft can move vertically and an elastic reset member is pressed onto the upper end of the tool shaft to keep the tool shaft always moving upward.

[0026] An elastic reset part is installed on the head of the present application. The elastic action of the elastic reset part on the tool shaft connected to the tool can make the tool maintain the upward movement trend. During the process of retracting the tool, the tool can move upward along the internal thread. At the same time, the elastic force of the elastic reset part can better allow the tool to overcome its own gravity and freely rotate and move upward, further improving the overall service life and operational stability.

[0027] A wheel hub inclined hole processing equipment includes a frame, characterized in that the frame is arranged with a drilling machine, a countersinking machine and the above-mentioned tapping machine in sequence in the horizontal direction, and a slide is arranged on one side of the frame along the distribution path of the drilling machine, the countersinking machine and the tapping machine, and the slide is used to fix the wheel hub positioning seat.

[0028] The processing equipment of the present application integrates a drilling machine, a countersinking machine and a tapping machine, corresponding to the three processes of drilling, countersinking and tapping, and is combined with a slide that can transfer the workpiece to the three above-mentioned workstations for processing in turn. It can process the wheel hub fully automatically, stably and efficiently.

[0029] In the above-mentioned wheel hub oblique hole processing equipment, it is characterized in that the drilling machine and the countersinking machine are respectively provided with a first gear shaft and a second gear shaft, the input ends of the first gear shaft and the second gear shaft are both connected to elastic couplings, and the drilling machine and the countersinking machine are both provided with motors capable of driving the respective elastic couplings to rotate;

[0030] An electric cylinder is provided on one side of the frame located on the distribution path of the drilling machine, the countersinking machine and the tapping machine, and the slide is connected to the electric cylinder and is driven by the electric cylinder to reciprocate along the distribution path of the drilling machine, the countersinking machine and the tapping machine;

[0031] The electric cylinder includes a drive motor, a screw and a slider, and the electric cylinder also includes a guide matching platform. The drive motor and the screw are both installed on the guide matching platform. The slider can be guided and moved along the length direction of the guide matching platform. The sliders are connected and moved synchronously by connecting members, and the slide is in contact with the upper surface of the guide matching platform and can be guided and moved along the length direction of the upper surface of the guide matching platform.

[0032] The upper surface of the guide matching platform is provided with a plurality of evenly spaced tooth grooves along its length direction, each tooth groove is arranged along the width direction of the guide matching platform, and a guide plane in contact with the bottom surface of the slide is provided between two adjacent tooth grooves.

[0033] The inclined hole processing equipment of the present application switches between three workstations by moving the slide, and processing needs to be carried out directly at the workstation, so the stability of the landing point after the slide moves needs to be guaranteed. The present application further designs a guide matching platform on the conventional electric cylinder, and the overall slide moves close to the guide matching platform. When it moves to the workstation, the overall slide is located on the guide matching platform, so it is very stable, and drilling, countersinking or tapping and other processing can be carried out directly.

[0034] The present application provides spaced apart tooth grooves on the guide mating platform, which can effectively reduce the friction between the slide and the guide mating platform when moving, making the movement smoother. Moreover, after moving to the work station, the various guide planes can form a large plane as a whole to provide support, so that the slide can be stably supported. This design not only increases the service life but also makes the operation stable and the processing accuracy is also improved.

[0035] A wheel hub processing production line is characterized by comprising an automatic pick-and-place robot, around which a loading roller, a chamfering processing device, a group drilling machine and the above-mentioned wheel hub oblique hole processing equipment are arranged in sequence.

[0036] In the above-mentioned wheel hub processing production line, a first visual inspection mechanism is provided at the end of the loading roller, and a second visual inspection mechanism is provided at the end of the chamfering processing device.

[0037] A wheel hub processing method, which uses the above-mentioned wheel hub processing production line, is characterized by comprising the following steps:

[0038] S1, loading, placing the blank wheel hub on the loading roller, and then transferring it to the vicinity of the automatic pick-and-place robot through the loading roller;

[0039] S2, visual photography positioning, the first visual inspection mechanism set at the end of the feeding roller takes a photo of the blank wheel hub and uploads it, and the positioning is calculated by the system;

[0040] S3, group drilling processing, the automatic pick-and-place robot grabs the blank wheel hub and transfers it to the group drilling machine for drilling processing;

[0041] S4, oblique hole processing, the automatic pick-and-place robot grabs the rough wheel hub from the group drilling machine and transfers it to the wheel hub oblique hole processing equipment for oblique hole processing;

[0042] S5, chamfering processing, using an automatic pick-and-place robot to grab the blank wheel hub from the wheel hub oblique hole processing equipment and transfer it to the chamfering processing device for automatic chamfering processing;

[0043] S6, unloading, the finished wheel hub after processing is inspected by the second visual inspection mechanism at the chamfering processing device and then unloaded from the unloading roller.

[0044] Compared with existing technologies, the advantages of this product are:

[0045] 1. There is a certain buffer time when the tool contacts the workpiece, and even the force when the tool contacts the workpiece gradually increases to the maximum as the elastic buffer is continuously compressed. This makes the tapping process smooth and stable, and can well protect the tool from wear or damage due to hard contact, thereby greatly improving the service life and operational stability of the entire tapping machine.

[0046] 2. During the resetting process of the dial 1, the shift block 1 on it is not interfered with by the shift block 2 and can be reset independently. This retraction process can effectively avoid the interference of the drive component and the hard friction between the tool and the tapped internal thread, which can effectively prevent the wear and even damage of the tool. This design further improves the service life and operational stability of the entire machine.

[0047] 3. The drive assembly is driven by a cylinder, which pushes the rack to move back and forth in a fixed direction. The rack engages with the gear to convert the linear motion into the rotational motion of the gear. This design makes the drive stroke controllable and stable, and the range of each extension and retraction is constant, which can enable the tool to steadily descend to contact the workpiece and reset. This design further improves the service life and operational stability of the entire machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a side view of the tapping machine of the present utility model;

[0049] Figure 2 This is a schematic structural diagram of the drive assembly of the present utility model;

[0050] Figure 3 This is a partial structural diagram of the drive assembly of the utility model;

[0051] Figure 4 This is a partial structural diagram of the drive assembly of the utility model;

[0052] Figure 5 This is a schematic structural diagram of the wheel hub oblique hole processing equipment of the present utility model;

[0053] Figure 6 This is a partial structural diagram of the wheel hub oblique hole processing equipment of the present utility model;

[0054] Figure 7 This is a schematic diagram of the wheel hub processing production line of the present invention;

[0055] Figure 8 The figure is a simplified process flow diagram of the wheel hub processing method of the present invention.

[0056] Figure: 1, machine head; 11, feed gear shaft; 12, dial 1; 121, shift block 1; 13, automatic pick-and-place manipulator; 14, loading roller; 141, first visual inspection mechanism; 15, chamfering device; 151, second visual inspection mechanism; 16, group drilling machine; 2, drive assembly; 21, dial 2; 211, shift block 2; 212, through hole; 22, cylinder; 23, gear; 24, rack; 2 5. Sleeve seat; 26. Positioning shaft; 27. Mounting seat; 28. Linear guide; 3. Elastic buffer; 4. Elastic reset member; 5. Tool shaft; 6. Drilling machine; 61. Gear shaft one; 62. Gear shaft two; 7. Countersinking machine; 8. Frame; 81. Electric cylinder; 82. Guide matching platform; 821. Tooth groove; 822. Guide plane; 83. Connector; 9. Slide; 10. Elastic coupling; 101. Servo motor. DETAILED DESCRIPTION

[0057] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0058] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0059] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0060] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0061] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0062] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0063] Example 1

[0064] like Figure 5 and Figure 6The wheel hub inclined hole processing equipment shown includes a frame 8, on which a drilling machine 6, a countersinking machine 7 and a tapping machine are arranged in sequence in the horizontal direction. A slide 9 is arranged on one side of the frame 8 along the distribution path of the drilling machine 6, the countersinking machine 7 and the tapping machine. The slide 9 is used to fix the wheel hub positioning seat. The existing conventional technical means for the wheel hub fixing seat will not be elaborated here. Please refer to the wheel oiling hole processing tool with application number: CN201920491446.7. The processing equipment of the present application integrates the three processes of drilling, countersinking and tapping corresponding to the drilling machine 6, the countersinking machine 7 and the tapping machine. The present application is combined with a slide 9 that can transfer the workpiece to the bottom of the above three stations for processing in sequence, and can process the wheel hub fully automatically, stably and efficiently.

[0065] The basic structures of the three machines, namely, gear shaft 1 61 and gear shaft 2 62, on the drilling machine 6 and the countersinking machine 7 are common knowledge in this field and will not be elaborated here. Please refer to the content of the patent CN203956147U. The innovation of this application is that the input ends of gear shaft 1 61 and gear shaft 2 62 are connected to elastic couplings 10, and motors 101 that can drive the respective elastic couplings 10 to rotate are provided on the drilling machine 6 and the countersinking machine 7; an electric cylinder 81 is provided on one side of the frame 8 on the distribution path of the drilling machine 6, the countersinking machine 7 and the tapping machine, and the slide 9 is connected to the electric cylinder 81 and driven by the electric cylinder 81 to move back and forth along the distribution path of the drilling machine 6, the countersinking machine 7 and the tapping machine; the electric cylinder 81 includes a drive motor 101, a screw and a slider, and the electric cylinder 81 also includes a guide matching platform 82, and the drive motor 1 01 and the screw rod are both installed on the guide matching platform 82, the slider can be guided and moved along the length direction of the guide matching platform 82, the sliders are connected and moved synchronously through the connecting piece 83, and the slide 9 is abutted against the upper surface of the guide matching platform 82 and can be guided and moved along the length direction of the upper surface of the guide matching platform 82; the upper surface of the guide matching platform 82 is provided with a number of evenly spaced tooth grooves 821 along its length direction, and each tooth groove 821 is arranged along the width direction of the guide matching platform 82, and there is a guide plane 822 in contact with the bottom surface of the slide 9 between two adjacent tooth grooves 821. The inclined hole processing equipment of the present application switches between three workstations by moving the slide 9, and processing needs to be carried out directly when it moves to the workstation. The stability of the landing point of the slide 9 after moving needs to be guaranteed. The present application further designs a guide matching platform 82 on the conventional electric cylinder 81. The entire slide 9 moves against the guide matching platform 82. When it moves to the workstation, the entire slide 9 is located on the guide matching platform 82, so it is very stable and can be directly used for drilling, countersinking or tapping. The present application provides spaced tooth grooves 821 on the guide matching platform 82, which can effectively reduce the friction between the slide 9 and the guide matching platform 82 when it moves, making it move more smoothly. Moreover, after moving to the workstation, the various guide planes 822 can form a large plane to provide support, so that the slide 9 can be stably supported. This design not only increases the service life but also makes the operation stable, and the processing accuracy is also improved.

[0066] like Figures 1-4The specific structure of the tapping machine in the above-mentioned hub oblique hole processing equipment is as follows: a tapping machine includes a head 1, the head 1 has a feed gear shaft 11 for driving the tool to move in the vertical direction, the head 1 is fixed with a driving assembly 2 for driving the feed gear shaft 11 to rotate, a dial 12 is coaxially fixed to the feed gear shaft 11, a dial block 121 protrudes from the dial 12, the driving assembly 2 has a dial 21 that can rotate circumferentially, the dial 2 21 is coaxially arranged with the dial 12 and a dial block 2 211 protrudes from the dial 21 that can form a resistance with the dial block 121 in the circumferential direction, the dial block 121 and the dial block 2 211 can rotate relatively separately and an elastic buffer 3 is arranged between the dial block 121 and the dial block 2 211 to reduce the impact of the contact between the tool and the workpiece. The head 1 of the present tapping machine has a feed gear shaft 11 similar to that of a conventional tapping machine. The cutter is driven downward by the rotation of the feed gear shaft 11. The head 1 of the present tapping machine is provided with a drive assembly 2 for driving the feed gear shaft 11 to rotate. The drive assembly 2 of the present application and the feed gear shaft 11 are connected and transmitted via a dial 1 12 and a dial 2 21. A shift block 121 protrudes from the dial 12, and a shift block 211 protrudes from the dial 2 21. When the dial 2 21 rotates, the shift block 211 can be driven to cooperate with the shift block 121, thereby driving the dial 12 to rotate and then driving the feed gear shaft 11 to rotate. An elastic buffer 3 is installed between the shift block 121 and the shift block 2 211. During the initial operation, the cutter and the workpiece have a certain contact distance. At this contact distance, the dial 2 21 drives the shift block 211 to approach the shift block 1. 121 is used for transmission. Due to the elastic force of the elastic buffer 3, the shift block 121 and the shift block 2 211 can be transmitted without abutting contact. At this time, the tool moves downward, and when the tool contacts the workpiece, the torque between the shift block 121 and the shift block 2 211 increases, causing the elastic buffer 3 to be compressed, and the shift block 121 and the shift block 2 211 are further moved closer to each other to achieve buffering. During this process, the contact force between the tool and the workpiece gradually increases, thereby avoiding damage to the tool due to hard contact. Through such a buffering process, the service life of the tool is improved, and the stability during processing is also improved. When the elastic buffer 3 is compressed to the limit position or the set position, the tool also presses on the workpiece with a constant pressure to tap downwards. After tapping a certain distance, as long as the drill bit actively rotates, it can tap downwards autonomously driven by the thread. The above design allows a certain buffer time when the tool contacts the workpiece, and even the force when the tool contacts the workpiece gradually increases to a maximum as the elastic buffer 3 is continuously compressed. Such a tapping process is gentle and stable, and can extremely well protect the tool from wear or damage due to hard contact, thereby greatly improving the service life and operational stability of the overall tapping machine.Another advantage of the present application of connecting the drive assembly 2 and the feed gear shaft 11 through the dial 1 12 and the dial 2 21 is that the dial block 1 121 and the dial block 2 211 can rotate relatively separately. After the tool taps into the hole to be processed, the dial 2 21 can stop rotating and rotate in the opposite direction to reset. At this time, the dial 12 is still rotating forwardly under the passive drive of the tool. When the tapping is completed, when the tool withdraws, the dial 1 12 and the dial 2 21 rotate in opposite directions during the tapping process, so that the dial 1 121 and the dial block 2 211 on the two are separated from each other, that is, the dials are rotated in opposite directions. The transmission of dial 12 and dial 21 is separated, so that the tool rotates in the opposite direction and can freely withdraw upward using the tapped internal thread, driving dial 12 to rotate in the opposite direction during the withdrawal process. Since the shift block 211 is reset in advance, the shift block 121 on the dial 12 is not interfered with by the shift block 211 during the reset process and can be reset independently. Such a tool withdrawal process can effectively avoid the interference of the drive component 2 and the generation of hard friction between the tool and the tapped internal thread, and can effectively avoid wear and even damage of the tool. This design further improves the service life and operational stability of the overall machine.

[0067] Furthermore, the first shift block 121 protrudes from the end surface of the first dial 12 facing the second dial 21 and is disposed close to the outer edge of the end surface. The second shift block 211 protrudes from the end surface of the second dial 21 facing the first dial 12 and is also disposed close to the outer edge. The first shift block 121 and the second shift block 211 are adjacent to each other and spaced apart in the circumferential direction. The elastic force of the elastic buffer 3 can act on the adjacent sides of the first shift block 121 and the second shift block 211. Preferably, the first shift block 121 and the second shift block 211 are disposed in pairs, and each first shift block 121 has a corresponding second shift block 211. The shift block 1 121 and the shift block 2 211 of the present application are adjacent to each other and spaced apart in the circumferential direction. When the dial 2 21 rotates in a single direction, the shift block 211 can be driven to approach the shift block 121 to compress the elastic buffer 3 to realize elastic drive. When the shift block 1 121 and the shift block 2 211 move in opposite directions, the elastic buffer 3 cannot transmit power to realize power isolation, which can realize buffered contact and slow pressure between the tool and the workpiece during tapping, and can also realize free rotation of the feed gear shaft 11 when retracting the tool. This design further improves the service life and operational stability of the overall machine.

[0068] Furthermore, the elastic buffer 3 is a hydraulic buffer. A through-hole 212 is formed laterally in the second shift block 211. The elastic buffer 3 is embedded in the through-hole 212, with the buffering end of the elastic buffer 3 facing the side of the first shift block 121. When the second shift block 21 rotates, the buffering end of the elastic buffer 3 presses against the side of the first shift block 121 to provide a buffer. The hydraulic buffer is directly embedded in the through-hole 212. This installation method effectively applies the elastic force to the adjacent two shift blocks 121 and 211, providing better buffering and further improving overall stability.

[0069] Furthermore, the drive assembly 2 also includes a cylinder 22, a gear 23, and a rack 24. A sleeve seat 25 is mounted on the machine head 1, outside the dial 1 12. The sleeve seat 25 is fixed to the machine head 1. A circumferentially rotatable positioning shaft 26 is axially fixed within the sleeve seat 25. The positioning shaft 26 is fixed to the outer end of the sleeve seat 25 via a bearing. The positioning shaft 26 is coaxially arranged with the feed gear shaft 11. The dial 21 is located inside the sleeve seat 25 and is pin-fixed to the end of the positioning shaft 26. The gear 23 is fixed to the other end of the positioning shaft 26. The cylinder 22 is fixed to the machine head 1, and the rack 24 is connected to the push rod of the cylinder 22. The rack 24 is driven by the cylinder 22 to reciprocate in a single direction. The gear 23 meshes with the rack 24 and is driven to rotate by the rack 24. The driving component 2 of the present application is driven by a cylinder 22. A rack 24 is installed on the push rod of the cylinder 22, and a gear 23 is coaxially connected to the dial 21 for transmission. The rack 24 is pushed back and forth in a fixed direction by the cylinder 22, and the rack 24 engages with the gear 23 to convert the linear motion into the rotational motion of the gear 23. The advantage of this design is that the driving stroke of the cylinder 22 is controllable and stable, and the range of each extension and retraction is constant. The accuracy of converting such linear motion into rotational control of the gear 23 is also very high, which can make the tool stably descend to contact the workpiece and reset. This design further improves the service life and operational stability of the entire machine.

[0070] Furthermore, a mounting base 27 is fixed to the machine head 1, and a linear guide 28 is laid on the mounting base 27. The rack 24 is fixed to the slider of the linear guide 28. The cylinder 22 is fixed to the mounting base 27 and can push the rack 24 to move back and forth along the arrangement direction of the linear guide 28. The arrangement direction of the linear guide 28 is perpendicular to the direction of the positioning shaft 26. The slider on the linear guide 28 is fixed to the side of the rack 24, and the bottom of the rack 24 has teeth and meshes with the gear 23. The rack 24 of the present application is connected to the mounting base 27 through the linear guide 28, and then driven by the cylinder 22 to slide along the arrangement direction of the linear guide 28. This design makes the overall structure more stable and smooth. In particular, the slider on the linear guide rail 28 of the present application is fixed on the side of the rack 24, and the teeth of the rack 24 are at the bottom of the rack 24. In this way, the slider can provide lateral support to the rack 24 in the front and rear directions to prevent the rack 24 from being laterally disengaged from the gear 23, thereby increasing stability.

[0071] Furthermore, the machine head 1 is equipped with a tool and a tool shaft 5 that drives the tool to rotate. The upper end of the tool shaft 5 protrudes from the machine head 1, and a transmission disk is installed on the tool shaft 5. A motor 101 is installed at the other end of the machine head 1. The motor 101 is connected to the transmission disk through a belt for transmission. The transmission disk and the tool shaft 5 are fixed circumferentially and can move axially. The tool shaft 5 can move vertically and the upper end of the tool shaft 5 is pressed with an elastic reset member 4 that allows the tool shaft 5 to always maintain an upward movement trend. Preferably, the elastic reset member 4 can be a compression spring, one end of the compression spring rests on the end of the tool shaft 5, and the other end presses on the transmission disk or the machine head 1 shell for support. The machine head 1 of the present application is equipped with an elastic reset member 4. The elastic action of the elastic reset member 4 on the tool shaft 5 connected to the tool can keep the tool in an upward movement trend. During the process of retracting the tool, the tool can move upward along the internal thread. At the same time, the elastic force of the elastic reset member 4 can better allow the tool to overcome its own gravity and freely rotate and move upward, further improving the overall service life and operational stability.

[0072] like Figure 7 The hub processing production line shown includes an automatic pick-and-place robot 13, around which are arranged in sequence a loading roller 14, a chamfering processing device 15, a group drilling machine 16 and hub oblique hole processing equipment.

[0073] Furthermore, a first visual inspection mechanism 141 is provided at the end of the loading roller 14 , and a second visual inspection mechanism 151 is provided at the end of the chamfering processing device 15 .

[0074] like Figure 8 A wheel hub processing method is shown, which uses the above-mentioned wheel hub processing production line and is characterized by comprising the following steps:

[0075] S1, loading, placing the blank wheel hub on the loading roller 14, and transferring it to the vicinity of the automatic pick-and-place robot 13 through the loading roller 14;

[0076] S2, visual photography positioning, the first visual inspection mechanism 141 provided at the end of the loading roller 14 takes a photo of the rough wheel hub and uploads it, and the positioning is calculated by the system;

[0077] S3, group drilling processing, the automatic pick-and-place robot 13 grabs the blank wheel hub and transfers it to the group drilling machine 16 for drilling processing;

[0078] S4, oblique hole processing, the automatic pick-and-place manipulator 13 grabs the rough wheel hub at the group drilling machine 16 and transfers it to the wheel hub oblique hole processing equipment for oblique hole processing;

[0079] S5, chamfering processing, the automatic pick-and-place manipulator 13 grabs the blank wheel hub at the wheel hub oblique hole processing equipment and transfers it to the chamfering processing device 15 for automatic chamfering processing;

[0080] S6. Unloading. The finished wheel hub is inspected and qualified by the second visual inspection mechanism 151 at the chamfering device 15 and then unloaded from the unloading roller. The unloading roller is located at the unloading port of the chamfering device 15, and the second visual inspection mechanism 151 is also located above the unloading roller. After the chamfering device 15 completes the processing, the finished wheel hub is flipped by an automatic flipping mechanism and transferred to the unloading roller for inspection.

[0081] Example 2

[0082] This is another embodiment of the elastic buffer 3 of the present application. The other structures in this embodiment are basically the same as those in the first embodiment, except that: the elastic buffer 3 is a spring, and the opposing sides of the shift block 1 121 and the shift block 2 211 are divided into a receiving groove 1 and a receiving groove 2. The two ends of the spring are respectively embedded in the receiving groove 1 and the receiving groove 2. When the shift block 1 121 and the shift block 2 211 are close to each other, the spring can be compressed to form a buffer. The two ends of the spring are respectively connected to the receiving groove 1 and the receiving groove 2 on the two adjacent shift blocks 1 121 and the shift block 2 211. When the shift block 1 121 and the shift block 2 211 are close to each other, the spring can be compressed to achieve a buffering effect. This design can achieve the same technical effect as the above solution.

[0083] Example 3

[0084] This is another embodiment of the drive assembly 2 of the present application. The other structures in this embodiment are basically the same as those in the first embodiment, except that the drive assembly 2 also includes a servo motor 101, which is fixed to the side of the machine head 1. A driving gear 23 is fixed to the output shaft of the servo motor 101, and a driven gear 23 is coaxially connected to the second dial 21. The driving gear 23 meshes with the driven gear 23 for transmission. In this embodiment, the drive assembly 2 drives the driving gear 23 to rotate by the servo motor 101, and the driving gear 23 is transmitted by meshing with the driven gear 23. This design can achieve technical effects similar to the above solution.

[0085] Although the disclosure is as described above, the scope of protection of the disclosure is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of protection of the utility model.

Claims

1. A tapping machine, comprising a machine head (1), wherein the machine head (1) has a feed gear shaft (11) for driving a tool to move in a vertical direction, characterized in that: A driving assembly (2) for driving the feed gear shaft (11) to rotate is fixed on the machine head (1), a dial plate (12) is coaxially fixed on the feed gear shaft (11), a shift block (121) protrudes from the dial plate (12), the driving assembly (2) has a dial plate (21) that can rotate in a circumferential direction, the dial plate (21) is coaxially arranged with the dial plate (12), and a shift block (211) protrudes from the dial plate (21) that can form a resistance with the shift block (121) in the circumferential direction, the shift block (121) and the shift block (211) can rotate relatively separately, and an elastic buffer (3) is arranged between the shift block (121) and the shift block (211) to reduce the impact of contact between the tool and the workpiece.

2. A tapping machine according to claim 1, characterized in that: The first shift block (121) protrudes from the end surface of the first dial (12) facing the second dial (21), and the second shift block (211) protrudes from the end surface of the second dial (21) facing the first dial (12). The first shift block (121) and the second shift block (211) are adjacent to each other in the circumferential direction and are arranged at intervals. The elastic force of the elastic buffer (3) can act on the adjacent side portions of the first shift block (121) and the second shift block (211).

3. A tapping machine according to claim 2, characterized in that: The elastic buffer (3) is an oil pressure buffer. The second shift block (211) is provided with a through hole (212) on the side. The elastic buffer (3) is embedded in the through hole (212) and the buffer end of the elastic buffer (3) faces the side of the first shift block (121). When the second shift block (21) rotates, the buffer end of the elastic buffer (3) can press against the side of the first shift block (121) to form a buffer.

4. A tapping machine according to claim 2, characterized in that: The elastic buffer (3) is a spring, and the opposing sides of the shift block 1 (121) and the shift block 2 (211) are provided with a first receiving groove and a second receiving groove. The two ends of the spring are respectively embedded in the first receiving groove and the second receiving groove. When the shift block 1 (121) and the shift block 2 (211) are brought close to each other, the spring can be compressed to form a buffer.

5. A tapping machine according to any one of claims 1 to 4, characterized in that: The driving assembly (2) further comprises a cylinder (22), a gear (23) and a rack (24); a sleeve seat (25) is sleeved on the outside of the dial plate 1 (12) on the machine head (1); a positioning shaft (26) capable of circumferential rotation is axially fixed in the sleeve seat (25); the positioning shaft (26) is coaxially arranged with the feed gear shaft (11); the dial plate 2 (21) is located on the inside of the sleeve seat (25) and is fixed to the end of the positioning shaft (26); the gear (23) is fixed to the other end of the positioning shaft (26); the cylinder (22) is fixed to the machine head (1) and the rack (24) is connected to the push rod of the cylinder (22); the rack (24) is driven by the cylinder (22) to reciprocate in a single direction; the gear (23) is meshed with the rack (24) and is driven to rotate by the rack (24).

6. A tapping machine according to claim 5, characterized in that: A mounting seat (27) is fixed on the machine head (1), a linear guide rail (28) is laid on the mounting seat (27), the rack (24) is fixed on a slider of the linear guide rail (28), and the cylinder (22) is fixed on the mounting seat (27) and can push the rack (24) to move back and forth along the arrangement direction of the linear guide rail (28); The arrangement direction of the linear guide rail (28) is perpendicular to the direction of the positioning shaft (26); the slider on the linear guide rail (28) is fixed on the side of the rack (24); the bottom of the rack (24) has teeth and meshes with the gear (23).

7. A tapping machine according to any one of claims 1 to 4, characterized in that: The driving assembly (2) further comprises a servo motor (101), the servo motor (101) being fixed on the side of the machine head (1), a driving gear (23) being fixed on the output shaft of the servo motor (101), a driven gear (23) being coaxially connected to the second dial (21), and the driving gear (23) and the driven gear (23) being meshed and transmitted.

8. A tapping machine according to any one of claims 1 to 4, characterized in that: The machine head (1) is provided with a tool and a tool shaft (5) for driving the tool to rotate. The tool shaft (5) can move vertically and an elastic reset member (4) is pressed onto the upper end of the tool shaft (5) to enable the tool shaft (5) to always maintain an upward movement trend.

9. A wheel hub oblique hole processing device, comprising a frame (8), characterized in that: The frame (8) is arranged with a drilling machine (6), a countersinking machine (7) and a tapping machine as described in any one of claims 1 to 8 in sequence in the horizontal direction, and a slide (9) is arranged on one side of the frame (8) along the distribution path of the drilling machine (6), the countersinking machine (7) and the tapping machine, and the slide (9) is used to fix the wheel hub positioning seat.

10. The wheel hub oblique hole processing equipment according to claim 9, characterized in that: The drilling machine (6) and the countersinking machine (7) are respectively provided with a gear shaft one (61) and a gear shaft two (62), the input ends of the gear shaft one (61) and the gear shaft two (62) are both connected with an elastic coupling (10), and the drilling machine (6) and the countersinking machine (7) are both provided with a motor (101) capable of driving the respective elastic couplings (10) to rotate; An electric cylinder (81) is provided on one side of the frame (8) located on the distribution path of the drilling machine (6), the countersinking machine (7) and the tapping machine, and the slide (9) is connected to the electric cylinder (81) and driven by the electric cylinder (81) to reciprocate along the distribution path of the drilling machine (6), the countersinking machine (7) and the tapping machine; The electric cylinder (81) comprises a driving motor (101), a screw rod and a slider, and the electric cylinder (81) further comprises a guide matching platform (82), the driving motor (101) and the screw rod are both installed on the guide matching platform (82), the slider can be guided and moved along the length direction of the guide matching platform (82), the slide (9) and the slider are connected and moved synchronously via a connecting piece (83), and the slide (9) is abutted against the upper surface of the guide matching platform (82) and can be guided and moved along the length direction of the upper surface of the guide matching platform (82); The upper surface of the guide matching platform (82) is provided with a plurality of evenly spaced tooth grooves (821) along its length direction, each tooth groove (821) is arranged along the width direction of the guide matching platform (82), and a guide plane (822) in contact with the bottom surface of the slide table (9) is provided between two adjacent tooth grooves (821).

11. A wheel hub processing production line, characterized in that: It comprises an automatic pick-and-place robot (13), around which are arranged in sequence a loading roller (14), a chamfering device (15), a group drilling machine (16) and a hub oblique hole processing device as described in any one of claims 9 to 10.

12. A wheel hub processing production line according to claim 11, characterized in that: A first visual inspection mechanism (141) is provided at the end of the loading roller (14), and a second visual inspection mechanism (151) is provided at the end of the chamfering processing device (15).

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