CN209773949U - Eight-station combined machine tool for processing vehicle door hinge - Google Patents

Abstract

The utility model relates to an automobile parts makes the field, discloses an eight station combined machine tool of processing door hinge. The machine tool comprises a machine tool base (1) and an eight-index rotary table (4) arranged at the center of the upper end of the machine tool base (1), wherein eight clamps (5) are arranged at the upper end of the eight-index rotary table (4) at equal angles; a feeding rack (6), a main shaft hole drilling mechanism (21), a first detection and chip cleaning mechanism (31), a thread bottom hole drilling mechanism (22), a second detection and chip cleaning mechanism (32), a thread tapping mechanism (23) and a bottom mounting hole drilling mechanism (24) which face the corresponding clamp (5) are sequentially arranged on the machine tool base (1); a robot (7) is arranged between the feeding rack (6) and the bottom mounting hole drilling mechanism (24). Eight graduation revolving tables rotate a week according to the order that above-mentioned step corresponds, can accomplish all manufacturing procedure that the work piece corresponds and take off the work piece that the processing was accomplished simultaneously.

Description

Eight-station combined machine tool for processing vehicle door hinge

Technical Field

The utility model relates to an automobile parts makes the field, has especially related to an eight station combined machine tool of processing door hinge.

Background

The door hinge is an important part of the door, is used for connecting the door with a vehicle body, can realize the opening and closing of the door, and is convenient for a driver and passengers to enter and exit. The automobile door hinge processing is the processing of automobile door parts and automobile body parts with different structures. The workpiece 10 shown in fig. 1 is an L-shaped door hinge, which is a vehicle body member; comprises a vertical part 102 and a bottom plate 103 which are perpendicular to each other; the upper end of the vertical part 102 is formed with an upper end part 101 with a cylindrical part; a spindle hole 1011 is formed in the center of the upper end 101; a first inclined surface 1012 is formed at the upper end part 101, which is positioned at the joint of the vertical part 102 and is positioned at one end of the vertical part 102 far away from the bottom plate 103; a side threaded hole 10121 facing the axis of the spindle hole 1011 is formed in the middle of the first inclined surface 1012; the vertical part 102 is formed with a second inclined surface 1021 towards the upper end part at the connection part with the upper end part 101; an arc corner 1022 is formed at the joint of the vertical part 102 and the bottom plate 103; the lower end of the bottom plate 103 is formed with a threaded bottom hole 1032 corresponding to the lower end of the upright portion 102; internal threads are formed in the threaded bottom hole 1032; a bottom mounting hole 1031 is formed at the lower end of the bottom plate 103, which is different from the vertical part 102; two workpieces 10 are symmetrically arranged on the vehicle body in a group.

chinese patent No. CN202062239U discloses a jig for processing a door hinge, which realizes simultaneous processing of the door hinge by a plurality of processing components uniformly mounted on a platen, but when one end surface of the door hinge is processed and the other end surface is processed, the door hinge needs to be taken out again and positioned again, which increases the number of processes and affects the processing accuracy.

SUMMERY OF THE UTILITY MODEL

the utility model discloses when processing another terminal surface among the prior art, need take out the door hinge again and fix a position again not enough, provide an eight station combined machine tool of processing door hinge.

In order to solve the technical problem, the utility model discloses a following technical scheme can solve:

The machine tool comprises a machine tool base and an eight-index rotary table arranged in the center of the upper end of the machine tool base, wherein eight clamps are arranged at the upper end of the eight-index rotary table at equal angles; a feeding rack, a main shaft hole drilling mechanism, a first detection and chip cleaning mechanism, a thread bottom hole drilling mechanism, a second detection and chip cleaning mechanism, a thread tapping mechanism and a bottom mounting hole drilling mechanism are fixedly mounted on a machine tool base in sequence; a robot used for moving the workpiece out of the clamp is also arranged between the feeding rack and the bottom mounting hole drilling mechanism; the feeding machine frame, the main shaft hole drilling mechanism, the first detection and chip cleaning mechanism, the thread bottom hole drilling mechanism, the second detection and chip cleaning mechanism, the thread tapping mechanism, the bottom mounting hole drilling mechanism and the robot are sequentially distributed along the axis of the eight-index rotary table at equal angles and face towards corresponding clamps.

The device also comprises a booster air pump and a controller; the eight-index rotary table, the main shaft hole drilling mechanism, the first detection and chip cleaning mechanism, the thread bottom hole drilling mechanism, the second detection and chip cleaning mechanism, the thread tapping mechanism, the bottom mounting hole drilling mechanism and the robot are electrically connected with the controller; the first chip detection and cleaning mechanism and the second chip detection and cleaning mechanism are connected with the booster air pump through pipelines. When a workpiece is machined, each clamp on the eight-index rotary table corresponds to each machining station, so that each mechanism works simultaneously, the total machining time can be saved, and the occupation of redundant machine tools on the field can be reduced.

Preferably, the main shaft hole drilling mechanism comprises an adjustable upright post and a servo mechanical sliding table; a first motor is arranged on the servo mechanical sliding table; the output shaft of the first motor is fixedly connected with a boring and milling power head; a second motor used for moving the servo mechanical sliding table is installed in the servo mechanical sliding table; the first motor is a three-phase asynchronous motor; the second motor is a servo motor; the screw bottom hole drilling mechanism and the bottom mounting hole drilling mechanism both comprise a servo mechanical sliding table and a boring and milling power head which have the same structure as the main shaft hole drilling mechanism; a boring and milling power head of the mechanism for drilling the main shaft hole is positioned above the corresponding clamp and faces the main shaft hole, and a cutter for drilling the main shaft hole is installed on the boring and milling power head; a boring and milling power head of the thread bottom hole drilling mechanism is provided with a cutter for drilling a thread bottom hole; a boring and milling power head of the bottom mounting hole drilling mechanism is provided with a cutter for drilling a bottom mounting hole; each first motor and each second motor are electrically connected to the controller. Adjusting the processing positions of workpieces of different types through the adjustable upright columns; the corresponding cutters are driven by the first motors to rotate so as to drill, and meanwhile, the servo mechanical sliding table is driven by the second motors to move so as to realize the feeding motion of the corresponding cutters.

Preferably, the first chip detecting and cleaning mechanism comprises a bracket, a probe and a first cylinder for driving the probe to move; the probe is hollow and is positioned at one end of the first air cylinder and is communicated with the booster air pump through a pipeline; a probe of the first detection and chip cleaning mechanism is positioned above the clamp and faces the spindle hole; the second detection and chip cleaning mechanism has the same structure as the first detection and chip cleaning mechanism, and the probe horizontally faces to the threaded bottom hole; the system also comprises a cylinder control system for controlling the first cylinder; the cylinder control system is electrically connected with the controller. Detecting whether the cutter is broken in the previous step through a probe; when the probe passes through the corresponding hole, the chip generated by processing in the hole can be cleaned, so that the chip can be cleaned.

Preferably, the tapping mechanism comprises a linear slide rail, a sliding table connected to the linear slide rail in a sliding manner, and a second air cylinder for driving the sliding table to move; a third motor electrically connected with the controller is installed on the sliding table; the third motor is a three-phase asynchronous motor; the output shaft of the third motor is fixedly connected with a tapping power head; a screw tap facing to the thread bottom hole is arranged on the tapping power head; the cylinder control system is used for controlling the second cylinder; the cylinder control system is electrically connected with the controller. The third motor is controlled to drive the screw tap to rotate, and the second cylinder controls the feeding motion of the sliding table to complete the machining of the threads in a matched mode.

preferably, the feeding rack is also provided with a mistake proofing mechanism facing the clamp; the mistake proofing mechanism comprises a pressing cylinder which is vertically arranged; the output end of the compressing cylinder is fixedly connected with a compressing block and a detection mechanism; the detection mechanism is electrically connected with the controller.

The detection mechanism comprises a press switch fixedly arranged at the lower end of the pressing block; the contact of the press switch is positioned at the position corresponding to the bottom plate of the workpiece.

The device also comprises an air cylinder control system used for controlling the pressing air cylinder; the cylinder control system is electrically connected with the controller. The error-proofing mechanism can prevent the left and right door hinges from being installed wrongly.

Preferably, the fixture comprises a fixture bottom plate fixedly connected to the eight-index rotary table, and the upper end of the fixture bottom plate is fixedly connected with two guide seats which are symmetrically arranged; the upper end of the clamp bottom plate is positioned at one side of each guide seat and is fixedly connected with a positioning and mounting block respectively; a V-shaped pressing block which is used for abutting against the upper end part is connected in the guide seat in a sliding way; the sliding direction of the V-shaped pressing block is parallel to the symmetrical surfaces of the two guide seats; the opening of the V-shaped pressing block faces one end of the positioning and mounting block.

Two oil cylinders used for pushing the two V-shaped pressing blocks respectively are installed at the upper end of the clamp bottom plate.

A rotary oil cylinder is fixedly arranged on the bottom plate of the clamp between the two positioning and mounting blocks; the output shaft of the rotary oil cylinder is positioned at the upper end; a pressure lever parallel to the clamp bottom plate is arranged on an output shaft of the rotary oil cylinder; two ends of the pressure lever respectively extend to the upper part of the positioning and mounting block; the pressure lever is vertical to the symmetrical surfaces of the two guide seats; two pressure heads which are symmetrically arranged are arranged on the position of the pressure lever close to the two ends and towards the positioning installation block.

The oil cylinder control system is electrically connected with the controller; the oil cylinder and the rotary oil cylinder are controlled by an oil cylinder control system.

one end of the positioning installation block, which is far away from the guide seat, is upwards formed with a positioning baffle plate; the upper end of each positioning installation block is close to the symmetrical surfaces of the two guide seats and is fixedly connected with a limiting block which is abutted against the second inclined surface and a positioning block which is abutted against the arc-shaped corner.

The oil cylinder and the rotary oil cylinder are electrically connected with the controller; the oil cylinder and the rotary oil cylinder are connected with an external hydraulic pump through pipelines.

The steps corresponding to each station when the workpiece is processed are as follows:

1. The station that the material loading frame corresponds: a worker installs the workpiece on the corresponding clamp, and the bottom plate faces the direction of the worker;

2. Drilling a station corresponding to the main shaft hole mechanism: drilling a phi 10 spindle hole;

3. the first station that detects and clear bits mechanism corresponds: detecting whether a cutter for drilling a main shaft hole is broken or not, and blowing and cleaning chips for the main shaft hole;

4. And (3) drilling a station corresponding to the thread bottom hole mechanism: drilling a threaded bottom hole and chamfering the threaded bottom hole;

5. The second detects and clear station that bits mechanism corresponds: detecting whether a cutter for drilling a thread bottom hole is broken or not and blowing air to remove chips;

6. Tapping the station that the screw mechanism corresponds: machining an M8 multiplied by 1.25 internal thread on the threaded bottom hole;

7. Drilling a station corresponding to the bottom mounting hole mechanism: drilling a bottom mounting hole, wherein the aperture of the bottom mounting hole is phi 13 +/-0.2;

8. The station corresponding to the robot: and removing the workpiece from the clamp by the mechanical clamping jaw of the robot.

The unit of each dimension in the above steps is mm.

The eight-index rotary table rotates for one circle according to the sequence corresponding to the steps, all machining procedures corresponding to the workpiece can be completed, and the machined workpiece can be taken down from the clamp; each process is carried out simultaneously, the processing time of the workpiece can be prolonged, and the relative positions of the clamp and the mechanism corresponding to each step are fixed, so that the processing precision of each process is ensured, and the cost and the loss are reduced.

Drawings

Fig. 1 is a schematic view of the structure of a workpiece.

Fig. 2 is a schematic structural diagram of the present invention.

Fig. 3 is a plan view of the present invention.

Fig. 4 is a schematic view of the structure of the jig.

fig. 5 is a partial enlarged view of I in fig. 3.

The names of the parts indicated by the numerical references in the drawings are as follows: 1-machine tool base, 21-main shaft hole drilling mechanism, 22-thread bottom hole drilling mechanism, 23-thread tapping mechanism, 24-bottom mounting hole drilling mechanism, 31-first detection and chip cleaning mechanism, 32-second detection and chip cleaning mechanism, 4-eight-division rotary table, 5-clamp, 51-clamp bottom plate, 52-guide seat, 53-oil cylinder, 54-V-shaped press block, 541-limit pin, 55-press plate, 551-limit groove, 56-positioning mounting block, 561-positioning baffle, 5611-threaded hole groove, 5612-mounting hole groove, 57-rotary oil cylinder, 58-press rod, 581-press head, 59-joint, 6-feeding rack, 7-robot, 8-cooling box and chip cleaning mechanism, 10-workpiece, 101-upper end portion, 1011-main shaft hole, 1012-first inclined surface, 10121-side thread hole, 102-vertical portion, 1021-second inclined surface, arc-shaped corner, 103-bottom plate 1022-main shaft hole, 1012-first inclined surface, 10121-side thread hole, 102-vertical portion, second inclined surface, and arc-shaped corner, 1031, bottom mounting hole, 1032, threaded bottom hole, 91, limiting block and 92, and positioning block.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

example 1

An eight-station combined machine tool for machining a vehicle door hinge is shown in figures 2-5 and comprises a machine tool base 1 and an eight-index rotary table 4 arranged at the center of the upper end of the machine tool base 1, wherein eight clamps 5 are arranged at the upper end of the eight-index rotary table 4 at equal angles, and each clamp 5 corresponds to eight stations; the machine tool base 1 is fixedly provided with a feeding frame 6, a main shaft hole drilling mechanism 21, a first detection and chip cleaning mechanism 31, a thread bottom hole drilling mechanism 22, a second detection and chip cleaning mechanism 32, a thread tapping mechanism 23 and a bottom mounting hole drilling mechanism 24 in sequence corresponding to each station; a robot 7 for moving the workpiece 10 out of the fixture is further arranged between the feeding frame 6 and the bottom drilling mounting hole mechanism 24; the feeding frame 6, the main shaft hole drilling mechanism 21, the first detecting and chip cleaning mechanism 31, the thread bottom hole drilling mechanism 22, the second detecting and chip cleaning mechanism 32, the thread tapping mechanism 23, the bottom mounting hole drilling mechanism 24 and the robot 7 are distributed along the axis of the eight-index rotary table 4 at equal angles in sequence and face the corresponding clamp 5; the robot 7 includes a robot arm and a mechanical gripper. When the workpiece 10 is machined, each clamp 5 on the eight-index rotary table 4 corresponds to each machining station, so that each mechanism works simultaneously, the total machining time can be saved, and the occupation of redundant machine tools on the field can be reduced; after the workpiece 10 is mounted on the fixture 5, the spindle hole 1011 is in a vertical state.

The eight-indexing rotary table 4 adopts a Taiwan comprehensive precise oil pressure EXT-600H-8 indexing rotary table; the eight-index rotary table 4 rotates 45 degrees each time to enable the workpiece 10 to enter the next working procedure.

The device also comprises a booster air pump and a controller; the eight-index rotary table 4, the drilling main shaft hole mechanism 21, the first detecting and chip cleaning mechanism 31, the thread bottom hole drilling mechanism 22, the second detecting and chip cleaning mechanism 32, the thread tapping mechanism 23, the bottom mounting hole drilling mechanism 24 and the robot 7 are electrically connected with a controller; the first chip detecting and cleaning mechanism 31 and the second chip detecting and cleaning mechanism 32 are connected with the booster air pump through pipelines.

The main shaft hole drilling mechanism 21 comprises an adjustable upright post and a servo mechanical sliding table; a first motor is arranged on the servo mechanical sliding table; the output shaft of the first motor is fixedly connected with a boring and milling power head; a cutter for drilling the spindle hole 1011 is mounted on the boring and milling power head; the boring and milling power head is positioned above the clamp 5 and faces the spindle hole 1011; a second motor used for enabling the servo mechanical sliding table to move is installed in the servo mechanical sliding table; the first motor is a three-phase asynchronous motor; the second motor is a servo motor; the thread bottom hole drilling mechanism 22 and the bottom mounting hole drilling mechanism 24 both comprise a servo mechanical sliding table and a boring and milling power head which have the same structure as the main shaft hole drilling mechanism 21; the boring and milling power head of the main shaft hole drilling mechanism 21 is positioned above the corresponding clamp 5 and faces the main shaft hole 1011, and a cutter for drilling the main shaft hole 1011 is mounted on the boring and milling power head; a cutter for drilling the threaded bottom hole 1032 is mounted on the boring and milling power head of the thread bottom hole drilling mechanism 22; a cutter for drilling the bottom mounting hole 1031 is arranged on the boring and milling power head of the bottom mounting hole drilling mechanism 24; each first motor and each second motor are electrically connected to the controller. Adjusting the machining positions of the workpieces 10 of different types through the adjustable upright columns; the corresponding cutters are driven by the first motors to rotate so as to drill, and meanwhile, the servo mechanical sliding table is driven by the second motors to move so as to realize the feeding motion of the corresponding cutters.

The first chip detecting and cleaning mechanism 31 comprises a bracket, a probe and a first cylinder for driving the probe to move; the probe is hollow and is positioned at one end of the first air cylinder and is communicated with the booster air pump through a pipeline; the probe of the first chip detecting and cleaning mechanism 31 is located above the clamp 5 and faces the spindle hole 1011; the second detecting and chip-cleaning mechanism 32 has the same structure as the first detecting and chip-cleaning mechanism 31 and the probe is horizontally oriented to the threaded bottom hole 1032; the first cylinder is electrically connected with the controller. The first cylinder drives the probe to move, when the probe cannot smoothly reach a preset stroke position, the corresponding hole is blocked, namely the cutter is broken in the hole or the corresponding hole is not drilled, and the cutter is judged to be broken and fed back to the controller, so that the machine tool is stopped; because the probe is hollow and is connected with the booster air pump, when the probe passes through the corresponding hole, the chips generated by processing in the hole can be cleaned, and therefore the chips can be cleaned.

the tapping mechanism 23 comprises a linear slide rail, a sliding table connected to the linear slide rail in a sliding manner, and a second cylinder for driving the sliding table to move; a third motor is arranged on the sliding table; the output shaft of the third motor is fixedly connected with a tapping power head; a screw tap facing the thread bottom hole 1032 is mounted on the tapping power head; the tapping power head is a floating type screw tap chuck; the second cylinder is electrically connected with the controller. The third motor is controlled to drive the screw tap to rotate, and the second cylinder controls the feeding motion of the sliding table to complete the machining of threads in a matched mode; the quick replacement of the tap can be realized through the floating tap chuck.

the air cylinder control system is electrically connected with the controller; the first air cylinder and the pressing air cylinder are controlled by an air cylinder control system.

The use of the robot 7 for gripping a workpiece is prior art and therefore no further expansion is made.

Further, two workpieces 10 are symmetrically arranged on the clamp 5 at the same time; the feeding frame 6, the main shaft hole drilling mechanism 21, the first detection and chip cleaning mechanism 31, the thread bottom hole drilling mechanism 22, the second detection and chip cleaning mechanism 32, the thread tapping mechanism 23 and the bottom mounting hole drilling mechanism 24 are all provided with two corresponding cutters, probes or screw taps, so that two workpieces 10 can be simultaneously machined.

The steps corresponding to each station when the workpiece 10 is processed are as follows:

1. station that material loading frame 6 corresponds: a worker mounts the workpiece 10 on the corresponding jig with the base plate 103 facing the direction in which the worker is located;

2. The station corresponding to the main shaft hole drilling mechanism 21: drilling a phi 10 spindle hole 1011;

3. The station corresponding to the first chip detecting and cleaning mechanism 31: detecting whether a cutter drilling the main shaft hole 1011 is broken or not, and blowing air and cleaning chips to the main shaft hole 1011;

4. And (3) drilling the stations corresponding to the thread bottom hole mechanism 22: drilling and chamfering threaded bottom holes 1032;

5. the station corresponding to the second chip detecting and cleaning mechanism 32: detecting whether a cutter drilling the thread bottom hole 1032 is broken or not and blowing and cleaning chips;

6. tapping mechanism 23 corresponds to the station: machining an M8X 1.25 internal thread into the threaded bottom hole 1032;

7. and the station corresponding to the bottom mounting hole drilling mechanism 24: drilling a bottom mounting hole 1031, wherein the hole diameter of the bottom mounting hole 1031 is phi 13 +/-0.2;

8. Station corresponding to robot 7: the workpiece 10 is removed from the clamp by means of the mechanical jaws of said robot 7.

The unit of each dimension in the above steps is mm.

the eight-index rotary table 4 rotates for one circle according to the sequence corresponding to the steps, all the machining processes corresponding to the workpieces 10 can be completed, and the machined workpieces 10 can be taken down from the clamp 5 at the same time; each process is performed simultaneously, so that the processing time of the workpiece 10 can be prolonged, and the relative positions of the clamp 5 and the mechanisms corresponding to the steps are fixed, so that the processing precision of each process is ensured, and the cost and the loss are reduced.

example 2

This example is modified from example 1 as follows: the jig 5 includes a rectangular jig base plate 51; the upper end of the clamp bottom plate 51 is fixedly connected with two guide seats 52 which are symmetrically arranged; the upper end of the clamp bottom plate 51 is positioned at one side of each guide seat 52 and is fixedly connected with a positioning and mounting block 56 for mounting the workpiece 10; a V-shaped pressing block 54 which is used for abutting against the upper end part 101 is connected in the guide seat 52 in a sliding manner; the sliding direction of the V-shaped pressing block 54 is parallel to the symmetry plane of the two guide seats 52; the V-shaped pressing block 54 opens toward one end of the positioning and mounting block 56. The sliding direction of the V-shaped pressing block 54 is limited through the guide seat 52; the sliding direction of the V-shaped pressing block 54 is parallel to the symmetry plane of the two guide seats 52.

The upper end of the clamp bottom plate 51 is also provided with two oil cylinders 53 which are respectively used for pushing the two V-shaped pressing blocks 54; an output shaft of the oil cylinder 53 is connected with one end, far away from the positioning and mounting block 56, of the V-shaped pressing block 54 through a joint 59; the oil cylinder 53 controls the V-shaped pressing block 54 to slide along the guide seat 52.

a pressing plate 55 for limiting the V-shaped pressing block 54 is fixedly connected to the upper end of the guide seat 52; a limit groove 551 arranged along the sliding direction of the V-shaped pressing block 54 is formed on the pressing plate 55; the upper end of the V-shaped pressing block 54 corresponds to the limit pin 541 formed in the limit groove 551. The stroke of the V-shaped pressing piece 54 is limited by the interaction between the limiting groove 551 and the limiting pin 541.

The oil cylinder control system is electrically connected with the controller; the oil cylinder 53 and the rotary oil cylinder 57 are controlled by an oil cylinder control system.

a rotary oil cylinder 57 is fixedly arranged between the two positioning and mounting blocks 56 on the clamp bottom plate 51; the rotary oil cylinder 57 is fixedly arranged on the clamp bottom plate 51 through a base; the output shaft of the rotary oil cylinder 57 is positioned at the upper end; a pressure rod 58 parallel to the clamp bottom plate 51 is arranged on an output shaft of the rotary oil cylinder 57; two ends of the pressure lever 58 extend to the upper part of the positioning and mounting block 56 respectively; the pressure lever 58 is perpendicular to the symmetry plane of the two guide seats 52; two symmetrically arranged pressing heads 581 are mounted on the pressing rod 58 near two ends and towards the positioning and mounting block 56. The rotating oil cylinder 57 presses down the pressure rod 58, so that the pressure head 581 is abutted against the workpiece 10, and the workpiece 10 is pressed on the positioning and mounting block 56; the oil cylinder 53 and the rotary oil cylinder 57 are electrically connected with the controller; the oil cylinder 53 and the rotary oil cylinder 57 are connected with an external hydraulic pump through a pipeline.

A positioning baffle 561 is formed upwards at one end of the positioning mounting block 56 away from the guide seat 52; the upper end of each positioning and mounting block 56 near the symmetrical plane of the two guide seats 52 is fixedly connected with a limit block 91 abutting against the second inclined plane 1021 and a positioning block 92 abutting against the arc-shaped corner 1022. When the workpiece 10 is mounted on the positioning mounting block 56, the position is fixed through the V-shaped pressing block 54, the positioning baffle 561, the limiting block 91, the positioning block 92 and the pressing head 581, and the workpiece 10 is positioned from multiple angles, so that the positioning is reliable; because the stopper 91 with locating piece 92 symmetry sets up and is located and is close to two the plane of symmetry department of guide holder 52, then can carry out simultaneous processing to the work piece 10 of two symmetry installations, process two door hinges about promptly simultaneously, enable door hinge to process in pairs, conveniently add man-hour check quantity and check leak.

The height of the baffle 561 is larger than the width of the bottom plate 103, that is, the baffle 561 is higher than the upper end of the bottom plate 103 after the bottom plate 103 is installed; the side wall of the baffle 561 is respectively formed with a threaded hole groove 5611 and a mounting hole groove 5612 for a drilling tool to pass through. A cutter passing through the threaded hole groove 5611 is used to drill a threaded bottom hole 1032, and a cutter passing through the mounting hole groove 5612 is used to drill a bottom mounting hole 1032.

further, when the V-shaped pressing block 54 abuts against the workpiece 10, a resultant force direction of the V-shaped pressing block 54 received by the workpiece 10 is perpendicular to the bottom surface of the bottom plate 103; an extension line of a resultant force direction of the V-shaped briquette 54 to which the workpiece 10 is subjected is located between both ends of the bottom plate 103. The pressure of the V-shaped pressing block 54 enables the workpiece 10 to be positioned on the positioning and mounting block 56 and prevents the workpiece 10 from moving along the length direction of the bottom plate 103 due to the restriction of the bottom surface of the bottom plate 103.

when a workpiece is machined, a worker places the workpiece 10 on the positioning and mounting block 56, the workpiece is roughly positioned through the positioning baffle 561, the limiting block 91 and the positioning block 92, and then the V-shaped pressing block 54 and the pressing head 581 are controlled through the oil cylinder 53 and the rotating oil cylinder 57 to fix the workpiece 10 for machining the bottom mounting hole 1031 and the threaded bottom hole 1032.

The hinges of the left and right vehicle doors can be simultaneously machined through the symmetrically arranged positioning and mounting blocks 56, so that the machining efficiency is improved and the workpieces can be checked in pairs compared with a clamp for mounting a single workpiece; the workpiece 10 is positioned in multiple points and angles by the shape features, so that the workpiece 10 can be installed and kept in a precise installation position and fixed in the machining process.

Example 3

this example is modified from example 1 as follows: the feeding frame 6 is also provided with a mistake-proofing mechanism facing the clamp 5; the mistake proofing mechanism comprises a pressing cylinder which is vertically arranged; the output end of the compressing cylinder is fixedly connected with a compressing block and a detection mechanism; the detection mechanism is electrically connected with the controller. When a worker installs the workpiece 10 on the clamp 5 and the pressing cylinder extends to the tail end of the stroke, the pressing block abuts against the upper end face of the installed workpiece 10, whether the workpiece 10 is installed wrongly or not is detected by the detection mechanism and fed back to the controller, and if the workpiece 10 is installed wrongly, the workpiece 10 is installed again.

the detection mechanism comprises a press switch fixedly installed at the lower end of the pressing block; the contact of the push switch is located at a symmetrical position of the vertical part 102 relative to the bottom plate 103 after the workpiece 10 is installed, namely, a position corresponding to the bottom plate 103 after the workpiece 10 is installed reversely; when the pressing cylinder extends downwards, when the pressing switch is pressed, the pressing cylinder is fed back to the controller to enable the pressing cylinder to retract reversely, a buzzer or an indicator light is used for prompting a worker to reinstall the pressing cylinder, and meanwhile, the time length corresponding to the step is prolonged. The error-proofing mechanism can prevent the left and right door hinges from being installed wrongly, and avoid causing unnecessary loss.

In short, the above description is only a preferred embodiment of the present invention, and all the equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the scope of the present invention.

Claims (6)

1. The utility model provides an eight station combined machine tools of processing door hinge, includes machine tool base (1), installs eight graduation revolving platforms (4) at machine tool base (1) upper end center, and eight anchor clamps (5), its characterized in that are installed to angle such as eight graduation revolving platforms (4) upper end: a feeding frame (6), a main shaft hole drilling mechanism (21), a first detection and chip cleaning mechanism (31), a thread bottom hole drilling mechanism (22), a second detection and chip cleaning mechanism (32), a thread tapping mechanism (23) and a bottom mounting hole drilling mechanism (24) are fixedly mounted on the machine tool base (1) in sequence; a robot (7) used for moving the workpiece (10) out of the clamp is also arranged between the feeding rack (6) and the bottom drilling mounting hole mechanism (24); the automatic thread drilling machine comprises a feeding frame (6), a main shaft hole drilling mechanism (21), a first detection and chip cleaning mechanism (31), a thread bottom hole drilling mechanism (22), a second detection and chip cleaning mechanism (32), a thread tapping mechanism (23), a bottom mounting hole drilling mechanism (24) and a robot (7), wherein the feeding frame, the main shaft hole drilling mechanism (21), the first detection and chip cleaning mechanism, the thread bottom hole drilling mechanism (22), the second detection and chip cleaning mechanism, the thread tapping mechanism (23), the bottom mounting hole drilling mechanism (24) and the robot (7) are sequentially distributed along;

the device also comprises a booster air pump and a controller; the eight-index rotary table (4), the main shaft hole drilling mechanism (21), the first detection and chip cleaning mechanism (31), the thread bottom hole drilling mechanism (22), the second detection and chip cleaning mechanism (32), the thread tapping mechanism (23), the bottom mounting hole drilling mechanism (24) and the robot (7) are electrically connected with the controller; the first detection and scrap cleaning mechanism (31) and the second detection and scrap cleaning mechanism (32) are connected with the booster air pump through pipelines.

2. The eight-station combined machine tool for machining the vehicle door hinge as claimed in claim 1, wherein: the main shaft hole drilling mechanism (21) comprises an adjustable upright post and a servo mechanical sliding table; a first motor is arranged on the servo mechanical sliding table; the output shaft of the first motor is fixedly connected with a boring and milling power head; a second motor used for moving the servo mechanical sliding table is installed in the servo mechanical sliding table; the first motor is a three-phase asynchronous motor; the second motor is a servo motor; the thread bottom hole drilling mechanism (22) and the bottom mounting hole drilling mechanism (24) both comprise a servo mechanical sliding table and a boring and milling power head which have the same structure as the main shaft hole drilling mechanism (21); a boring and milling power head of the main shaft hole drilling mechanism (21) is positioned above the corresponding clamp (5) and faces the main shaft hole (1011), and a cutter for drilling the main shaft hole (1011) is mounted on the boring and milling power head; a tool for drilling a thread bottom hole (1032) is arranged on a boring and milling power head of the thread bottom hole drilling mechanism (22); a cutter for drilling a bottom mounting hole (1031) is arranged on a boring and milling power head of the bottom mounting hole drilling mechanism (24); each first motor and each second motor are electrically connected to the controller.

3. The eight-station combined machine tool for machining the vehicle door hinge as claimed in claim 1, wherein: the first detection and scrap cleaning mechanism (31) comprises a bracket, a probe and a first air cylinder for driving the probe to move; the probe is hollow and is positioned at one end of the first air cylinder and is communicated with the booster air pump through a pipeline; the probe of the first detection and scrap cleaning mechanism (31) is positioned above the clamp (5) and faces the spindle hole (1011); the second detection and chip cleaning mechanism (32) has the same structure as the first detection and chip cleaning mechanism (31) and the probe horizontally faces to the thread bottom hole (1032);

The system also comprises a cylinder control system for controlling the first cylinder; the cylinder control system is electrically connected with the controller.

4. the eight-station combined machine tool for machining the vehicle door hinge as claimed in claim 1, wherein: the tapping mechanism (23) comprises a linear slide rail, a sliding table connected to the linear slide rail in a sliding manner and a second air cylinder used for driving the sliding table to move; a third motor electrically connected with the controller is installed on the sliding table; the third motor is a three-phase asynchronous motor; the output shaft of the third motor is fixedly connected with a tapping power head; a screw tap facing the thread bottom hole (1032) is arranged on the tapping power head;

the cylinder control system is used for controlling the second cylinder; the cylinder control system is electrically connected with the controller.

5. The eight-station combined machine tool for machining the vehicle door hinge as claimed in claim 1, wherein: a mistake-proofing mechanism facing the clamp (5) is also arranged on the feeding rack (6); the mistake proofing mechanism comprises a pressing cylinder which is vertically arranged; the output end of the compressing cylinder is fixedly connected with a compressing block and a detection mechanism; the detection mechanism is electrically connected with the controller;

The detection mechanism comprises a press switch fixedly arranged at the lower end of the pressing block; the contact of the press switch is positioned at the position corresponding to the bottom plate (103) of the workpiece (10);

The device also comprises an air cylinder control system used for controlling the pressing air cylinder; the cylinder control system is electrically connected with the controller.

6. The eight-station combined machine tool for machining the vehicle door hinge as claimed in claim 1, wherein: the clamp (5) comprises a clamp bottom plate (51) fixedly connected to the eight-index rotary table (4), and the upper end of the clamp bottom plate (51) is fixedly connected with two guide seats (52) which are symmetrically arranged; the upper end of the clamp bottom plate (51) is positioned at one side of each guide seat (52) and is fixedly connected with a positioning and mounting block (56) respectively; a V-shaped pressing block (54) which is used for abutting against the upper end part (101) is connected in the guide seat (52) in a sliding way; the sliding direction of the V-shaped pressing block (54) is parallel to the symmetrical surfaces of the two guide seats (52); the opening of the V-shaped pressing block (54) faces one end of the positioning and mounting block (56);

The upper end of the clamp bottom plate (51) is provided with two oil cylinders (53) which are respectively used for pushing two V-shaped pressing blocks (54);

A rotary oil cylinder (57) is fixedly arranged between the two positioning and mounting blocks (56) on the clamp bottom plate (51); the output shaft of the rotary oil cylinder (57) is positioned at the upper end; a pressure lever (58) parallel to the clamp bottom plate (51) is arranged on an output shaft of the rotary oil cylinder (57); two ends of the pressure lever (58) respectively extend to the upper part of the positioning mounting block (56); the pressure lever (58) is vertical to the symmetrical surfaces of the two guide seats (52); two symmetrically arranged pressure heads (581) are arranged at the positions, close to the two ends, of the pressure rod (58) and face the positioning and mounting block (56);

the oil cylinder control system is electrically connected with the controller; the oil cylinder (53) and the rotary oil cylinder (57) are controlled by an oil cylinder control system;

a positioning baffle (561) is formed upwards at one end of the positioning mounting block (56) far away from the guide seat (52); the upper end of each positioning and mounting block (56) close to the symmetrical surface of the two guide seats (52) is fixedly connected with a limiting block (91) abutting against the second inclined surface (1021) and a positioning block (92) abutting against the arc-shaped corner (1022) respectively;

the oil cylinder (53) and the rotary oil cylinder (57) are electrically connected with the controller; the oil cylinder (53) and the rotary oil cylinder (57) are connected with an external hydraulic pump through pipelines.