A high-precision wheel hub hole finishing boring machine

Abstract

The invention discloses a high-precision wheel hub hole finishing boring machine, comprising: a bed, a hydraulic automatic centering fixture, a CNC vertical slide, a spindle box, a CNC flat disc, a tool, and a hydraulic system; wherein the bed is the main structure of the high-precision wheel hub hole finishing boring machine; the hydraulic automatic centering fixture is used to place the workpiece to be processed and is installed on the bed; the CNC vertical slide is used to control the CNC flat disc to operate and is installed on the bed; the spindle box is used to control the operating speed of the CNC flat disc and is installed on the CNC vertical slide; the CNC flat disc is used to control the tool to process the workpiece to be processed and is installed on the spindle box; the tool is used to process the workpiece to be processed and is installed on the CNC flat disc; the hydraulic system is connected to the hydraulic automatic centering fixture and is used to provide power to the hydraulic automatic centering fixture. The wheel hub hole finishing boring machine adopts CNC vertical boring processing, which ensures product quality and greatly improves production efficiency.

Description

Technical Field

[0001] The invention relates to railway vehicle equipment machinery, in particular to a high-precision wheel hub hole finishing boring machine. Background Art

[0002] At present, high-speed rail technology is changing with each passing day, and the speed of trains is constantly increasing, which has led to the continuous updating of wheel design requirements and higher requirements for the processing of wheel hub holes. In turn, the corresponding equipment machinery needs to constantly adapt to technological progress and upgrade technology in a timely manner. Wheel hub holes require high precision. The traditional method of processing wheel hub holes mainly uses vertical lathes, which has low production efficiency and is difficult to control quality, and can no longer meet the current technological development needs. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a high-precision wheel hub hole finishing boring machine in view of the low production efficiency and difficult quality control of the existing wheel hub hole processing boring machine.

[0004] In order to solve the above technical problems, the embodiment of the present invention provides a high-precision wheel hub hole finishing boring machine, a bed, a hydraulic automatic centering fixture, a CNC vertical slide, a spindle box, a CNC flat turntable, and a tool;

[0005] The bed is the main structure of the wheel hub hole finishing boring machine, and is used to support the wheel hub hole finishing boring machine;

[0006] The hydraulic automatic centering fixture is used to place the workpiece to be processed and is installed on the bed;

[0007] The CNC vertical slide is used to control the up and down movement of the spindle box, the CNC flat disc and the tool, and is installed on the bed;

[0008] The spindle box is used to control the rotation speed of the CNC flat disc and the tool, and is installed on the CNC vertical slide;

[0009] The CNC horizontal rotating disk is used to control the horizontal distance between the tool and the workpiece to be processed, and is installed on the spindle box;

[0010] The tool is used to process the workpiece to be processed and is installed on the CNC flat rotating disk;

[0011] Among them, the CNC flat turntable includes an AC servo motor, a transmission shaft, a ball screw, a slider and a linear rail; the AC servo motor is connected to the transmission shaft through a coupling; the slider is fixedly connected to the ball screw, and the transmission shaft is meshed with the ball screw, driving the ball screw and the slider and the tool to move on the linear rail.

[0012] Preferably, the CNC flat turntable also includes a conductive slip ring, a coupling, a first spiral bevel gear and a second spiral bevel gear; the conductive slip ring is used to distribute power to the AC servo motor for rotation; the AC servo motor and the transmission shaft are connected through the coupling, so that the AC servo motor drives the transmission shaft; the first spiral bevel gear is located at the other end of the transmission shaft, the second spiral bevel gear is located on the ball screw, and the first spiral bevel gear is meshed with the second spiral bevel gear.

[0013] Preferably, the hydraulic automatic centering clamp includes a clamp positioning seat and a clamp three-jaw synchronization mechanism; the clamp three-jaw synchronization mechanism includes three hydraulic motors and three trapezoidal lead screws, and the hydraulic motor is connected to one end of the trapezoidal lead screw; there is a first bevel gear in the center of the clamp positioning seat, and there is a second bevel gear on the other end of the trapezoidal lead screw, and the first bevel gear and the second bevel gear are meshed with each other; the three trapezoidal lead screws are synchronously clamped and released.

[0014] Preferably, the CNC vertical slide includes a slide column, a slide body, a slide servo motor, a slide balancing cylinder, a reduction gear box, a lead screw nut pair, and a slide linear rail; the slide column is connected to the bed and is used to support the CNC vertical slide; the slide servo motor is installed on the slide column; the slide servo motor is connected to the reduction gear box; the reduction gear box drives the lead screw nut pair, driving the slide body connected to the lead screw nut pair to move on the slide linear rail; the slide body is connected to the spindle box; the slide balancing cylinder counterweights the CNC vertical slide.

[0015] Preferably, the spindle box includes a main motor; the spindle box is connected to the transmission shaft to control the rotation speed of the CNC turntable; the main motor is used for speed regulation, the spindle speed range in the spindle box is 50~500rpm, and the spindle speed is n=250rpm when the frequency is 50Hz.

[0016] Preferably, the tool includes a depth sensing switch, a first processing tool, and a second processing tool; the depth sensing switch is used to determine the distance between the tool and the workpiece to be processed, the first processing tool is used for precision processing, and the second processing tool is used for semi-precision processing.

[0017] Preferably, the wheel hub hole finishing boring machine also includes a hydraulic system and an electrical control system; the hydraulic system is connected to the hydraulic automatic centering fixture to provide hydraulic power to the hydraulic automatic centering fixture; the electrical control system is connected to the wheel hub hole finishing boring machine to control the electrical energy provided to the wheel hub hole finishing boring machine.

[0018] Preferably, the wheel hub hole finishing boring machine also includes a machine tool protection; the machine tool protection is installed on the vehicle body, and together with the vehicle body, protects the internal components of the wheel hub hole finishing boring machine from damage; the machine tool protection adopts a stainless steel telescopic protective cover.

[0019] Preferably, the wheel hub hole finishing boring machine also includes a lubricator; the lubricator is respectively installed on the CNC vertical slide and the spindle box, and is used to lubricate the internal parts of the wheel hub hole finishing boring machine.

[0020] Preferably, the wheel hub hole finishing boring machine also includes an automatic chip removal system; the automatic chip removal system is installed in the vehicle body; the automatic chip removal system includes a chain plate type automatic chip conveyor and an iron chip collection box; the chain plate type automatic chip conveyor is used to collect iron chips generated during processing, and clean the iron chips into the iron chip collection box, thereby realizing automatic cleaning of the generated iron chips.

[0021] Implementing the embodiments of the present invention has the following beneficial effects:

[0022] (1) The wheel hub hole finishing boring machine described in the embodiment of the present invention controls the vertical movement of the CNC flat plate through the CNC vertical slide, controls the rotation speed of the CNC flat plate through the spindle box, and finally drives the tool to move horizontally along the linear rail through the CNC flat plate, thereby realizing fine processing of the workpiece to be processed; through this series of CNC operations, not only the product quality is guaranteed, but also the production efficiency is greatly improved.

[0023] (2) The embodiment of the present invention also includes a machine tool protection, a lubricator and an automatic chip removal system, which not only provides protection for the wheel hub hole finishing boring machine bed, provides automatic lubrication for important parts of the wheel hub hole finishing boring machine, but also automatically discharges and collects iron chips generated by the wheel hub hole finishing boring machine; thus, all aspects of the wheel hub hole finishing boring machine are automated, reducing the time spent on manual cleaning and ensuring the machine operation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the main structure of the first embodiment provided by the present invention;

[0026] Figure 2 is a schematic diagram of a top view of the structure of the first embodiment provided by the present invention;

[0027] Figure 3 is a side structural schematic diagram of the first embodiment provided by the present invention;

[0028] Figure 4 It is a schematic diagram of a partially enlarged structure of a numerically controlled flat rotating disk according to the first embodiment of the present invention.

[0029] In the attached figure: 1-bed, 2-hydraulic automatic centering fixture, 201-fixture positioning seat, 202-fixture three-claw synchronization mechanism, 203-hydraulic motor, 204-trapezoidal screw, 205-first bevel gear, 206-second bevel gear, 3-CNC vertical slide, 301-slide column, 302-slide body, 303-slide servo motor, 304-slide balance cylinder, 305-reduction box, 306-screw nut pair, 307-slide linear rail, 4-spindle box, 401-main motor, 5-CNC flat turntable, 501- AC servo motor 501, 502-conductive slip ring, 503-coupling, 504-transmission shaft, 505-first spiral bevel gear, 506-ball screw, 507-second spiral bevel gear, 508-linear rail, 509-slider, 6-tool, 601-depth sensing switch, 602-first processing tool, 603-second processing tool, 7-hydraulic system, 8-electrical control system, 9-machine tool protection, 10-lubricator, 11-automatic chip removal system, 1101-chain plate type automatic chip conveyor, 1102-iron chip collection box. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1~Figure 3The specific embodiment of the present invention provides a high-precision wheel hub hole finishing boring machine. The wheel hub hole finishing boring machine includes a bed 1, a hydraulic automatic centering fixture 2, a CNC vertical slide 3, a spindle box 4, a CNC flat disc 5, a tool 6, a hydraulic system 7, an electrical control system 8, a machine tool protection 9, a lubricator 10, and an automatic chip removal system 11. Among them, the bed 1 is made of cast iron and is the main structure of the wheel hub hole finishing boring machine, which is used to support the high-precision wheel hub hole finishing boring machine. The hydraulic automatic centering fixture 2 is used to place the workpiece to be processed, can realize automatic clamping and loosening, and is installed on the bed. The CNC vertical slide 3 is used to control the spindle box 4, the CNC flat disc 5 and the tool 6 to move up and down, and is installed on the bed. The spindle box 4 is made of cast iron and is used to control the rotation speed of the CNC flat disc 5 and the tool 6, and is installed on the CNC vertical slide 3. The CNC flat rotary disk 5 is used to control the horizontal distance between the tool 6 and the workpiece to be processed, and is installed on the spindle box. The tool 6 is used to process the workpiece to be processed and is installed on the CNC flat rotary disk 5. The hydraulic system 7 is connected to the hydraulic automatic centering fixture 2 and is used to provide hydraulic power to the hydraulic automatic centering fixture 2. The electrical control system 8 is connected to the wheel hub hole finishing boring machine and is used to control the electric energy provided to the high-precision wheel hub hole finishing boring machine. The machine tool protection 9 adopts a stainless steel telescopic protective cover, which together with the vehicle body protects the internal components of the wheel hub hole finishing boring machine from damage; it is installed on the vehicle body 1. The lubricator 10 is respectively installed on the CNC vertical slide 3 and the spindle box 4, and is used to lubricate the internal parts of the wheel hub hole finishing boring machine. The automatic chip removal system 11 is installed in the vehicle body 1, and is used to clean the iron chips generated during the processing of the wheel hub hole finishing boring machine.

[0032] The hydraulic automatic centering fixture 2 includes a fixture positioning seat 201 and a fixture three-claw synchronization mechanism 202. The fixture positioning seat 201 is used to install the fixture three-claw synchronization mechanism 202, and cooperates with the fixture three-claw synchronization mechanism 202 to realize the automatic clamping and loosening of the workpiece to be processed. There is a first bevel gear 205 at the center of the fixture positioning seat 201; the fixture three-claw synchronization mechanism 202 includes three hydraulic motors 203 and three trapezoidal screws 204. There is also a second bevel gear 206 on the end of the trapezoidal screw 204 away from the hydraulic motor 203. Under the action of the hydraulic system 7, the hydraulic motor 203 will provide an outward or inward force to the trapezoidal screw 204; the trapezoidal screw 204 will drive the second bevel gear 206 to mesh with the first bevel gear 205, and realize the three trapezoidal screws 204 to be clamped inward or loosened outward at the same time. The hydraulic automatic centering fixture 2 can automatically clamp and release the workpiece to be processed.

[0033] The CNC vertical slide 3 includes a slide column 301, a slide body 302, a slide servo motor 303, a slide balancing oil cylinder 304, a reduction box 305, a screw nut set 306, and a slide linear rail 307. The slide column 301 is connected to the bed 1 for supporting the CNC vertical slide 3; the slide servo motor 303 is installed on the slide column 301; the slide servo motor 303 is connected to the reduction box 305; the reduction box 305 is drivingly connected to the screw nut set 306 for driving the screw nut set 306; the screw nut set 306 is connected to the slide body 302; the slide balancing oil cylinder 304 counterweights the CNC vertical slide 3. Driven by the slide servo motor 303, the reduction box 305 will drive the lead screw nut pair 306; the lead screw nut pair 306 will drive the slide body 302 to move back and forth on the slide linear rail 307. The slide body 302 is connected to the spindle box 4, the spindle box 4 is connected to the CNC flat disk 5, and the CNC flat disk 5 is connected to the tool 6; finally, the spindle box 4, the CNC flat disk 5, and the tool 6 will be driven to move up and down together. The CNC vertical slide 3 realizes digital control of the horizontal height of the tool 6.

[0034] The spindle box 4 includes a main motor 401, which adopts a variable frequency motor speed regulation and can control the spindle speed in the spindle box 4; the spindle speed range in the spindle box 4 is 50~500rpm, and when the frequency of the main motor 401 is 50Hz, the spindle speed is n=250rpm. The spindle in the spindle box 4 is connected to the CNC flat disk 5, and the CNC flat disk 5 is connected to the tool 6. The spindle box 4 will realize digital control of the tool speed and realize rough and fine processing of the workpiece to be processed.

[0035] The CNC flat turntable 5 includes an AC servo motor 501, a conductive slip ring 502, a coupling 503, a transmission shaft 504, a first spiral bevel gear 505, a ball screw 506, a second spiral bevel gear 507, a slider 509 and a linear track 508. The conductive slip ring 502 is used to distribute power to the AC servo motor 501 for rotation; the AC servo motor 501 is connected to the transmission shaft 504 through the coupling 503; the first spiral bevel gear 505 is located at the other end of the transmission shaft 504; the second spiral bevel gear 507 is located on the ball screw 506; the first spiral bevel gear 505 is meshed with the second spiral bevel gear 507; the slider 509 is fixedly connected to the ball screw 506 and is located on the linear track 508. Figure 4When the AC servo motor 501 drives the transmission shaft 504 through the coupling 503, the first spiral bevel gear 505 will drive the second spiral bevel gear 507; the ball screw 506 will move left and right in the horizontal direction, and the slider 509 will follow the ball screw 506 to move left and right in the horizontal direction on the linear rail 508. The slider 509 is connected to the tool 6, and the slider 509 moves left and right in the horizontal direction, and the tool 6 will follow the slider 509 to move left and right in the horizontal direction. The CNC flat turntable 5 realizes digital control of the horizontal distance between the tool 6 and the workpiece to be processed, and meets the automatic processing of hub holes with boring diameters in the range of φ130 to φ500 mm.

[0036] The tool 6 includes a depth sensing switch 601, a first processing knife 602, and a second processing knife 603. The depth sensing switch 601 is used to determine the distance between the tool 6 and the workpiece to be processed, the first processing knife 602 is used for precision processing, and the second processing knife 603 is used for semi-precision processing; various degrees of processing of the workpiece to be processed are achieved.

[0037] The lubricator 10 is respectively installed on the slide column 301 and the spindle box 4, and is used to lubricate the screw nut 306 of the CNC vertical slide 3, the slide rail 307 and the bearing of the spindle box 4. Automatically maintain the smoothness of the internal parts of the wheel hub hole finishing boring machine.

[0038] The automatic chip removal system 11 includes a chain plate type automatic chip conveyor 1101 and an iron chip collection box 1102. The chain plate type automatic chip conveyor 1101 is installed in the vehicle body 1 and is located below the hydraulic automatic centering fixture 2. The iron chips generated by the workpiece to be processed will fall into the chain plate type automatic chip conveyor 1101; the chain plate type automatic chip conveyor 1101 will centrally clean the iron chips into the iron chip collection box 1102, complete the cleaning of the iron chips, and realize automatic cleaning of iron chips.

[0039] In summary, the wheel hub hole finishing boring machine uses the CNC vertical slide 3, the spindle box 4, and the CNC flat turntable 5 to complete the CNC control of the orientation and speed of the tool 6; uses the hydraulic automatic centering fixture 2 to automatically control the clamping and loosening of the workpiece to be processed; uses the lubricator 10 to automatically maintain the internal parts of the wheel hub hole finishing boring machine; uses the automatic chip removal system 11 to automatically clean the generated iron chips; and uses the machine tool protection 9 to protect the wheel hub hole finishing boring machine. All-round CNC and automation of the wheel hub hole finishing boring machine are achieved; not only product quality is guaranteed, but also production efficiency is greatly improved.

[0040] What is disclosed above is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. A high-precision wheel hub hole finishing boring machine, characterized in that: include: Bed, hydraulic automatic centering fixture, CNC vertical slide, spindle box, CNC flat turntable, tool; The bed is the main structure of the wheel hub hole finishing boring machine, and is used to support the wheel hub hole finishing boring machine; The hydraulic automatic centering fixture is used to place the workpiece to be processed and is installed on the bed; The CNC vertical slide is used to control the up and down movement of the spindle box, the CNC flat disc and the tool, and is installed on the bed; The spindle box is used to control the rotation speed of the CNC flat disc and the tool, and is installed on the CNC vertical slide; The CNC horizontal rotating disk is used to control the horizontal distance between the tool and the workpiece to be processed, and is installed on the spindle box; The tool is used to process the workpiece to be processed and is installed on the CNC flat rotating disk; The CNC flat turntable includes an AC servo motor, a transmission shaft, a ball screw, a slider and a linear rail; the AC servo motor is connected to the transmission shaft through a coupling; the slider is fixedly connected to the ball screw, and the transmission shaft is meshed with the ball screw to drive the ball screw and the slider and the tool to move on the linear rail; The CNC flat turntable also includes a conductive slip ring, a coupling, a first spiral bevel gear and a second spiral bevel gear; the conductive slip ring is used to distribute power to the AC servo motor for rotation; the AC servo motor is connected to the transmission shaft through the coupling, so that the AC servo motor drives the transmission shaft; the first spiral bevel gear is located at the other end of the transmission shaft, the second spiral bevel gear is located on the ball screw, and the first spiral bevel gear is meshed with the second spiral bevel gear.

2. The high-precision wheel hub hole finishing boring machine according to claim 1, characterized in that: The hydraulic automatic centering clamp includes a clamp positioning seat and a clamp three-jaw synchronization mechanism; the clamp three-jaw synchronization mechanism includes three hydraulic motors and three trapezoidal lead screws, and the hydraulic motor is connected to one end of the trapezoidal lead screw; there is a first bevel gear in the center of the clamp positioning seat, and there is a second bevel gear on the other end of the trapezoidal lead screw, and the first bevel gear and the second bevel gear are meshed with each other; the three trapezoidal lead screws are synchronously clamped and released.

3. The high-precision wheel hub hole finishing boring machine according to claim 1, characterized in that: The CNC vertical slide includes a slide column, a slide body, a slide servo motor, a slide balancing cylinder, a reduction gear box, a lead screw nut pair, and a slide linear rail; the slide column is connected to the bed and is used to support the CNC vertical slide; the slide servo motor is installed on the slide column; the slide servo motor is connected to the reduction gear box; the reduction gear box drives the lead screw nut pair to drive the slide body connected to the lead screw nut pair to move on the slide linear rail; the slide body is connected to the spindle box; the slide balancing cylinder counterweights the CNC vertical slide.

4. The high-precision wheel hub hole finishing boring machine according to claim 1, characterized in that: The spindle box includes a main motor; the spindle box is connected to the transmission shaft to control the rotation speed of the CNC flat disc; the main motor is used for speed regulation, and the spindle speed range in the spindle box is 50~500rpm. When the frequency is 50Hz, the spindle speed is n=250rpm.

5. The high-precision wheel hub hole finishing boring machine according to claim 1, characterized in that: The tool comprises a depth sensing switch, a first processing tool and a second processing tool; the depth sensing switch is used to determine the distance between the tool and the workpiece to be processed, the first processing tool is used for precision processing, and the second processing tool is used for semi-precision processing.

6. The high-precision wheel hub hole finishing boring machine according to claim 1, characterized in that: The wheel hub hole finishing boring machine also includes a hydraulic system and an electrical control system; the hydraulic system is connected to the hydraulic automatic centering fixture to provide hydraulic power to the hydraulic automatic centering fixture; the electrical control system is connected to the wheel hub hole finishing boring machine to control the electrical energy provided to the wheel hub hole finishing boring machine.

7. The high-precision wheel hub hole finishing boring machine according to claim 1, characterized in that: The wheel hub hole finishing boring machine also includes a machine tool protection; the machine tool protection is installed on the bed, and together with the bed, protects the internal components of the wheel hub hole finishing boring machine from damage; the machine tool protection adopts a stainless steel telescopic protective cover.

8. The high-precision wheel hub hole finishing boring machine according to claim 1, characterized in that: The wheel hub hole finishing boring machine also includes a lubricator; the lubricator is respectively installed on the CNC vertical slide and the spindle box, and is used to lubricate the internal parts of the wheel hub hole finishing boring machine.

9. The high-precision wheel hub hole finishing boring machine according to claim 1, characterized in that: The wheel hub hole finishing boring machine also includes an automatic chip removal system; the automatic chip removal system is installed in the bed; the automatic chip removal system includes a chain plate type automatic chip conveyor and an iron chip collection box; the chain plate type automatic chip conveyor is used to collect the iron chips generated during processing, and clean the iron chips into the iron chip collection box, thereby realizing automatic cleaning of the generated iron chips.

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