CN107498328A - A kind of servo-controlled flexible material pressing device by formula numerical control drilling - Google Patents

Abstract

The invention discloses a servo-controlled flexible pressing device of a through-type numerical control drill, which comprises a bottom plate (10), a side stop device (20), a flexible pressing device (30), and a side stop device and a flexible pressing device. There is a channel (40) between the pressing devices for the sheet to enter. When the sheet enters the working area along the channel and reaches the set position under the drive of the transmission device, the flexible pressing device (30) is used to push the sheet to the side. The gear device (20) is used to press the plate to position the plate, which is beneficial to the subsequent drilling process. The flexible pressing device can absorb the dimensional error in the width of the plate due to its certain elasticity, thereby improving the drilling accuracy.

Description

A servo-controlled flexible pressing device for through-type CNC drilling

technical field

The invention relates to the technology in the field of plate processing, in particular to a servo-controlled flexible pressing device of a pass-through numerical control drill.

Background technique

The through-type CNC drill is used to drill holes in the plate. Its structure can refer to the Chinese invention patent, the application number is 201710223217.2, which is an intelligent through-type CNC drilling equipment with automatic feeding and discharging and automatic code scanning. When the plate is driven into the working position by the feeder, the plate is positioned first, and then drilled, and the material is automatically discharged after drilling.

The positioning of the plate by the existing through-type numerical control drilling equipment is realized by a pressing device, and the pressing device is mostly a pressing plate type pressing device or a servo-controlled torsion type pressing device. Among them, the pressing plate type pressing device is a rigid pressing material, and its pressure cannot be adjusted. When there is a width dimension error at both ends of the plate after blanking, the phenomenon of excessive pressure or insufficient pressure will occur. The servo control torsion type pressing device has the following disadvantages:

1. The pressing device is a pressing plate fixed on the translational support, which can only limit a certain width and cannot eliminate the error of the plate. When there is an error in the blanking of the plate, the pressing material is too tight or the plate cannot be pressed, and the accuracy cannot be achieved. ensure.

2. The existing through-type CNC drill servo-controlled torsion pressing device is difficult to control electrically. When the torque is too small, the pressing device will be overloaded and insufficient. When a certain torque is reached, the servo motor stops rotating. If the torque is too large, the pressing material will be too tight, the torque is not easy to control, and the control requirements are high. At the same time, the cost of its electrical components is high and the stability is poor;

3. The existing side positioning mechanism of the machine is a fixed structure, which cannot sink as a whole, cannot get out of the side position, and cannot drill the side hole position of the positioning end.

4. The side of the existing pressing device is a surface-contact pressing material, and its straightness requires high straightness, which requires high straightness for processing the side of the pressing plate.

5. The existing pressing device does not have a synchronous belt synchronizing device, and its synchronization is synchronized by electrical control, and the synchronization is poor.

Contents of the invention

In view of this, the present invention aims at the deficiencies in the prior art, and its main purpose is to provide a servo-controlled flexible pressing device for through-type CNC drilling, which provides elastic force through the elastic pressing wheel mechanism and absorbs both ends of the plate. The existing width error makes the plate positioning more accurate and the drilling precision high.

To achieve the above object, the present invention adopts the following technical solutions:

A servo-controlled flexible pressing device for through-type numerical control drilling, including

a bottom plate;

A side gearing device, which is installed on the bottom plate, the side gearing device includes a side positioning bar, a lifting cylinder, a side positioning support, a linear guide rail, and a slider; the lifting cylinder is supported between the bottom plate and the side positioning bar, The side positioning support is fixed on the bottom plate, the linear guide rail is vertically installed on the side positioning support, the slider is matched and installed on the linear guide rail, and the slider is connected to the side positioning bar through the connecting seat;

A flexible pressing device, which is installed on the bottom plate, has a passage for the plate to enter between the side gear device and the flexible pressing device; the flexible pressing device includes a servo motor, a driving wheel, a belt, a driven wheel, and a screw rod , a translation support, a pressure wheel seat plate, and an elastic pressure wheel mechanism, the rotating shaft of the servo motor is connected to the driving wheel, the driving wheel is connected to the driven wheel through a belt, the driven wheel is connected to the screw, and the translation support is installed on the screw. The pinch wheel seat plate is fixed on the upper end of the translation support, and a row of pinch wheel mechanisms are installed on the inner side of the pinch wheel seat plate;

When the through-type CNC drill is started, the plate is driven by the transmission mechanism and enters the work area along the positive direction of the X-axis of the channel. When it reaches the set position, the plate is blocked. The block moves on the linear guide rail, so that the side positioning bar rises along the positive direction of the Z axis; then, the flexible pressing device moves, uses the servo motor to drive the driving wheel, and transmits the power to the driven wheel through the belt, and the driven wheel drives the screw to rotate. In this way, the translational support moves along the positive direction of the Y-axis, drags the pressure roller seat plate to simultaneously translate along the positive direction of the Y-axis, drives the row of pressure roller mechanisms to press the first side of the plate, and at the same time pushes the second side of the plate tightly against it On the side positioning bar.

As a preferred solution, the pressing wheel mechanism includes a fixed pressing block, a movable rubber wheel seat, a rubber wheel, and a rolling bearing. Connect the pressure spring; the rolling bearing is installed in the rubber wheel, and the center of the rolling bearing is installed on the movable rubber wheel seat through a locking pin and a retaining ring.

As a preferred solution, the movable rubber wheel seat is provided with a sliding notch, and the fixed pressing block is located in the sliding notch to cooperate with the movable rubber wheel seat. The head end of the fixed pressing block is provided with a spring positioning hole, and the pressure spring One end stretches into the spring positioning hole, and the other end contacts the movable rubber wheel seat.

As a preferred solution, the outer end of the movable rubber wheel seat is provided with a through hole, and an adjusting screw is installed in the through hole to adjust all the pressing surfaces of the rubber wheels on a straight line, and the inner end of the adjusting screw contacts the fixed pressure. The upper edge of the block.

As a preferred solution, the pressure wheel seat plate is provided with a plurality of relief grooves, and the rubber wheels of each set of pressure wheel mechanisms are accommodated in the relief grooves, and the outermost ends of each rubber wheel are stretched out to give way. out of the groove.

As a preferred solution, transition wheels are provided on both sides of the drive wheel, the transition wheels are installed on the adjustment seat, a tension block is provided above the adjustment seat, and a tension screw is provided between the tension block and the adjustment seat.

As a preferred solution, the connection relationship between the screw rod and the translation support is: a nut is sheathed on the screw rod, the translation support is a nut seat, and the nut is screwed and connected to the translation support.

As a preferred solution, one end of the screw rod is installed on the bottom plate through the bearing seat, and the other end is installed on the bottom plate through the screw rod seat.

As a preferred solution, the number of the servo motor is 1, and the number of screw rods is 2. Through 1 servo motor and 1 belt, the 2 screw rods are synchronously driven to rotate, so that the 2 movable rubber wheel seats 382 are synchronized. The translation drives a pressure wheel seat plate 37 to translate along the Y-axis positive direction.

As a preferred solution, there are two lifting cylinders, and each lifting cylinder is connected to the side positioning bar through a movable joint.

Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be seen from the above-mentioned technical scheme that due to the setting of the side stop device and the flexible pressing device, when the through-type numerical control drill is started, the plate is transported Driven by the mechanism, it enters the working area along the positive direction of the X-axis of the channel. When it reaches the set position, the plate is blocked. Rising along the positive direction of the Z-axis; then, the flexible pressing device moves, uses the servo motor to drive the driving wheel, and transmits the power to the driven wheel through the belt, and the driven wheel drives the screw to rotate, so that the translation support translates along the positive direction of the Y-axis. Drag the pressure roller seat plate to move synchronously along the positive direction of the Y axis, drive the row of pressure roller mechanisms to press the first side of the plate, and at the same time push the second side of the plate to tightly against the side positioning bar, the plate is positioned, and then Drilling is carried out, and because the flexible pressing device has a certain degree of elasticity, it can absorb the error in the width of the plate, thereby improving the drilling accuracy.

In order to more clearly illustrate the structural features and functions of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

FIG. 1 is a schematic diagram of a first perspective of an embodiment of the present invention.

FIG. 2 is a schematic diagram of a second viewing angle of an embodiment of the present invention.

Fig. 3 is a cross-sectional view of an embodiment of the present invention.

Fig. 4 is an assembly view of the pressing wheel mechanism of the embodiment of the present invention.

Fig. 5 is an exploded view of the pressing wheel mechanism of the embodiment of the present invention.

Explanation of the accompanying drawings:

10. Bottom plate 20. Side stop device

21. Side positioning bar 211. Trapezoidal platform

22. Lifting cylinder 23. Side positioning support

24. Linear guide rail 25. Slider

26. Connecting seat 27. Movable joint

30. Flexible pressing device 31. Servo motor

32. Driving wheel 33. Belt

34. Followed wheel 35. Screw rod

351, nut 352, bearing seat

353. Screw seat 36. Translating support

37. Pressure wheel seat plate 371. Recess

38. Pressure wheel mechanism 381. Fixed pressing block

3811, upper rib 3812, spring positioning hole

382. Movable rubber wheel seat 3821. Sliding notch

3822, through hole 383, rubber wheel

3831, locking pin 3832, retaining ring

384, rolling bearing 385, pressure spring

386. Adjusting screw 39. Transition wheel

391. Adjusting seat 392. Tension block

393. Tension screw 40. Channel

50. Plate 51. First side

52. Second side.

detailed description

Please refer to Fig. 1 to Fig. 5, which shows the specific structure of a preferred embodiment of the present invention, which is a servo-controlled flexible pressing device of a through-type numerical control drill, including a bottom plate 10, a side rail Device 20, a flexible pressing device 30, the side stop device 20 and the flexible pressing device 30 are installed on the bottom plate 10, there is a channel 40 for the plate to enter between the side stop device 20 and the flexible pressing device 30 , when the board enters the working area along the channel 40 driven by the transmission device (not shown in the figure) and reaches the set position, use the side stop device 20 and the flexible pressing device 30 to clamp both sides of the board so that the board Positioning is beneficial to the subsequent drilling process, and the flexible pressing device 30 can absorb the error in the width of the plate due to its certain elasticity, thereby improving the drilling accuracy.

Wherein, the side gearing device 20 includes a side positioning bar 21 , a lifting cylinder 22 , a side positioning support 23 , a linear guide rail 24 , and a slider 25 . The lifting cylinder 22 is supported between the base plate 10 and the side positioning bar 21, the side positioning support 23 is fixed on the base plate 10, the linear guide rail 24 is vertically installed on the side positioning support 23, and the slider 25 is installed on the On the linear guide rail 24 , the slider 25 is connected to the side positioning bar 21 through the connecting seat 26 . Utilize the lifting cylinder 22 to move the slide block 25 on the linear guide rail 24 to make the side positioning bar 21 rise along the Z-axis direction. In this embodiment, there are two lifting cylinders 22, and each lifting cylinder 22 is connected to the side positioning bar 21 through a movable joint 27, and the movable joint 27 can move freely. The side positioning bar 21 is provided with a trapezoidal platform 211, which can ensure the accuracy of plate positioning.

The flexible pressing device 30 includes a servo motor 31 , a driving wheel 32 , a belt 33 , a driven wheel 34 , a screw 35 , a translation support 36 , a pressing wheel seat plate 37 , and an elastic pressing wheel mechanism 38 . The rotating shaft of the servo motor 31 is connected to the driving wheel 32, the driving wheel 32 is connected to the driven wheel 34 through the belt 33, the driven wheel 34 is connected to the screw mandrel 35, the translation support 36 is installed on the screw mandrel 35, and the pinch roller seat plate 37 is fixed on the translation The upper end of bearing 36 is equipped with a row of pressure roller mechanism 38 in the inboard of pressure roller seat plate 37. Use the servo motor 31 to drive the driving wheel 32, and transmit the power to the driven wheel 34 through the belt 33, and the driven wheel 34 drives the screw rod 35 to rotate, so that the translation support 36 translates along the positive direction of the Y axis, and drags the pressure wheel seat plate 37 to synchronize Translate along the positive direction of the Y-axis to drive the row of pressing wheel mechanisms 38 to press the first side 51 of the plate 50, and at the same time push the second side 52 of the plate to tightly against the side positioning bar 21, the plate is positioned, and then drill hole machining.

Wherein, the two sides of the driving wheel 32 are provided with a transition wheel 39, the transition wheel 39 is installed on the adjustment seat 391, the top of the adjustment seat is provided with a tension block 392, and a tension block 392 is provided between the tension block 392 and the adjustment seat 391. Tighten screw 393, be used for adjusting the tightness of belt 33. The connection relationship between the screw mandrel 35 and the translation support 36 is: the screw mandrel 35 is sleeved with a nut 351, the translation support 36 is a nut seat, and the nut 351 is screwed with the translation support 36, so that the translation support 36 can move on the threaded mandrel 35, transforming the rotational movement of the threaded mandrel 35 into the translational movement of the translation support 36. One end of the screw mandrel 35 is installed on the base plate 10 through the bearing seat 352, and the other end is installed on the base plate 10 through the screw mandrel seat 353. The setting of the bearing seat 352 makes the screw mandrel 35 driven by the driven wheel 34 to rotate automatically, and the screw mandrel 35 rotates automatically. When driving the translation support 36 translations.

In the present embodiment, the quantity of the servo motor 31 is 1, and the quantity of the screw rods 35 is 2. Through 1 servo motor 31 and 1 belt 33, the 2 screw rods 35 are synchronously driven to rotate, so that the 2 translational supports The seat 36 translates synchronously, and drives a pinch wheel seat plate 37 to translate along the Y-axis positive direction. Due to the design of two screw rods 35 driven by a single servo motor 31, the synchronization is high and the transmission precision is high, which ensures that the pressing of both ends of the plate is carried out synchronously. In addition, since rows of pressing wheel mechanisms 38 are provided, multiple relief grooves 371 are provided on the pressing wheel seat plate 37, and the rubber wheels 383 of each set of pressing wheel mechanisms 38 are accommodated in the relief grooves 371. , and the outermost ends of each rubber wheel 383 extend out of the relief groove 371 to ensure that each rubber wheel 383 can be in contact with the side of the plate.

As shown in FIGS. 3 to 5 , the pressing wheel mechanism 38 includes a fixed pressing block 381 , a movable rubber wheel seat 382 , a rubber wheel 383 , and a rolling bearing 384 . The fixed pressing block 381 is fixed on the pressing wheel seat plate 37, and the pressure spring 385 is abutted between the movable rubber wheel seat 382 and the fixed pressing block 381; the rolling bearing 384 is installed in the rubber wheel 383, and the center of the rolling bearing 384 passes through the lock Tight pin 3831, retaining ring 3832 are installed on the movable rubber wheel seat 382. Wherein, the installation of rolling bearing 384 makes rubber wheel 383 can rotate, reduces the frictional force that contacts with the plate side, when plate head end is wider than tail end, can appear in the side of plate inclined, rubber wheel 383 rolls on plate side, and then The elastic force of the pressure spring 385 is used to absorb the width dimension error between the head and the tail of the plate.

Specifically, the movable rubber wheel seat 382 is provided with a sliding notch 3821, the fixed pressing block 381 is located in the sliding notch 3821, the head end of the fixed pressing block 381 is provided with a spring positioning hole 3812, and the pressure spring 385 One end extends into the spring positioning hole 3812 , and the other end contacts the movable rubber wheel seat 382 . Like this, fixed briquetting block 381 does not move, and after rubber wheel 383 contacts with plate side, rubber wheel 383 is subjected to pressure, and pressure is passed to movable rubber wheel seat 382, and movable rubber wheel seat 382 compresses pressure spring 385, and rubber wheel 383 can The board is pressed in flexible contact, and the pressing force is variable from small to large, so as to absorb the width dimension error between the head and tail of the material.

The outer end of the movable rubber wheel seat 382 is provided with a through hole 3822 , an adjusting screw 386 is installed in the through hole 3822 , and the inner end of the adjusting screw 386 contacts the upper rib 3811 of the fixed pressing block 381 . Rotating the adjustment screw 386 can make the movable rubber wheel seat 382 move along the positive direction or the reverse direction of the Y axis, so as to achieve the purpose of fine-tuning the rubber wheel 383 and adjust all the rubber wheel pressing surfaces in a straight line.

The working principle of the present invention is as follows: when the through-type CNC drill is started, the plate is driven by the transmission mechanism and enters the work area along the positive direction of the X-axis of the channel 40. When it reaches the set position, the plate is blocked, and the side is at the gear. The device 20 moves upwards first, and then uses the flexible pressing device 30 to push the plate to the side stop device 20. In this way, the flexible pressing device presses the first side 51 of the plate 50, and simultaneously pushes the second side 52 of the plate tightly. Closely against the side positioning bar 21, the plate is positioned, and then the drilling process is carried out.

More specifically, due to the positioning of one side of the plate by the side stop device 20, when the plate enters the machine from the feeding direction, the side positioning bar 21 rises to the working position under the action of the lifting cylinder 22, wherein the position of the side positioning bar 21 The lifting is fixed by the side positioning support 23, and the rising and falling is realized by the guidance of the linear guide rail 24 and the slide block 25.

When the side railing device 20 is raised, the sheet material enters the working area driven by the transmission device (not shown), and the elastic pressing wheel mechanism 38 is driven by the servo motor 31 to press the material toward the side railing device 20, When reaching the set position, the servomotor stops, and the workpiece is compressed under the action of the pressure spring 385 in the pressure roller mechanism 38 the inside. Wherein, the pinch wheel mechanism 38 is installed on the pinch wheel seat plate, and the pinch wheel seat plate is installed on the translation support 36, and the movement of the pinch wheel mechanism 38 is to provide power by the servo motor 31, through the driving wheel 32 and the driven wheel 34. The transmission power of the power belt 33 is transmitted to the screw mandrel 35 on both sides, wherein the screw mandrel 35 and the nut 351 convert the rotary motion of the servo motor 31 into a straight line pressing material to move, wherein the tension of the power belt 33 can be adjusted by the tension block 392 and the transition Wheel 39 adjustments.

The pressure wheel mechanism 38 includes a rubber wheel 383 , the rubber wheel 383 is fixed on a rolling bearing 384 , and rotates through the action of the rolling bearing 384 , and the rolling bearing 384 is fixed by a locking pin 3831 and a retaining ring 3832 . The outer material of the rubber wheel 383 is rubber, which will not crush the side of the plate. The rubber wheel 383 is fixed on the movable rubber wheel seat, and there is a sliding notch 3821 in the middle of the movable rubber wheel seat. The installation limit of the movable rubber wheel seat is fixed at the T-shaped Pressing block 381, T-shaped fixed pressing block 381 is designed with upper rib 3811, and the movable rubber wheel seat and T-shaped fixed pressing block 381 can slide freely under the effect of pressure spring 385 through clearance fit, and plate produces compressive force.

The above are only preferred embodiments of the present invention, and do not limit the technical scope of the present invention in any way, so any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention are still valid. It belongs to the scope of the technical solutions of the present invention.

Claims (10)

1. A servo-controlled flexible pressing device of a through-type numerical control drill, characterized in that: comprising a bottom plate (10); A side stop device (20), which is installed on the base plate, the side stop device includes a side positioning bar (21), a lifting cylinder (22), a side positioning support (23), a linear guide rail (24), a slide block (25); the lifting cylinder is supported between the base plate and the side positioning bar, the side positioning support is fixed on the base plate, the linear guide rail is vertically installed on the side positioning support, and the slide block is fitted on the linear guide rail, The slide block is connected to the side positioning bar through the connecting seat (26); A flexible pressing device (30), which is installed on the base plate, has a channel (40) for the plate to enter between the side gear and the flexible pressing device; the flexible pressing device includes a servo motor (31), an active Wheel (32), belt (33), driven wheel (34), screw mandrel (35), translation support (36), pressure roller seat plate (37), elastic pressure roller mechanism (38), the servo The rotating shaft of the motor is connected to the driving wheel, the driving wheel is connected to the driven wheel through the belt, and the driven wheel is connected to the screw rod. The translation support (36) is installed on the screw rod. There is a row of pressure roller mechanism installed on the inner side; When the through-type CNC drill is started, the plate is driven by the transmission mechanism and enters the work area along the positive direction of the X-axis of the channel (40). When it reaches the set position, the plate is blocked, and the side stop device (20) operates at this time , use the lift cylinder (22) to move the slider (25) on the linear guide rail (24), so that the side positioning bar (21) rises along the Z-axis direction; then, the flexible pressing device (30) moves, and the servo motor ( 31) Drive the driving wheel (32), transmit the power to the driven wheel (34) through the belt (33), and the driven wheel (34) drives the screw rod (35) to rotate, so that the translation support (36) is along the positive direction of the Y axis Translating, dragging the pressure roller seat plate (37) to translate synchronously along the positive direction of the Y axis, driving the rows of pressure roller mechanisms (38) to compress the first side (51) of the plate (50), and simultaneously pushing the second side of the plate ( 52) firmly against the side positioning bar (21). 2. A servo-controlled flexible pressing device for through-type CNC drilling according to claim 1, characterized in that: the pressing wheel mechanism (38) includes a fixed pressing block (381), a movable rubber wheel seat (382) ), rubber wheels (383), rolling bearings (384), the fixed pressure block is fixed on the pressure wheel seat plate (37), and the pressure spring (385) is abutted between the movable rubber wheel seat and the fixed pressure block; the rolling bearing Installed in the rubber wheel, the center of the rolling bearing is installed on the movable rubber wheel seat through the locking pin (3831) and the retaining ring (3832). 3. A servo-controlled flexible pressing device for through-type CNC drilling according to claim 2, characterized in that: the movable rubber wheel seat (382) is provided with a sliding notch (3821), and the fixed The pressing block is located in the sliding notch and is matched with the movable rubber wheel seat. The head end of the fixed pressing block is provided with a spring positioning hole (3812). One end of the pressure spring extends into the spring positioning hole, and the other end contacts the movable rubber wheel seat. 4. A servo-controlled flexible pressing device for through-type CNC drilling according to claim 3, characterized in that: the outer end of the movable rubber wheel seat (382) is provided with a through hole (3822), the through hole (3822) is An adjusting screw (386) is installed in the hole, and all the rubber wheel pressing surfaces are adjusted in a straight line, and the inner end of the adjusting screw contacts the upper rib (3811) of the fixed pressing block. 5. A servo-controlled flexible pressing device for through-type CNC drilling according to claim 2, characterized in that: the pressure wheel seat plate (37) is provided with a plurality of relief grooves (371), The rubber wheels (383) of each group of pressure wheel mechanisms are all accommodated in the relief groove, and the outermost ends of each rubber wheel all stretch out of the relief groove. 6. A servo-controlled flexible pressing device for through-type CNC drilling according to claim 1, characterized in that: transition wheels (39) are provided on both sides of the driving wheel (32), and the transition wheels are installed on On the adjustment seat (391), the top of the adjustment seat is provided with a tension block (392), and a tension screw (393) is provided between the tension block and the adjustment seat. 7. A servo-controlled flexible pressing device for through-type CNC drilling according to claim 1, characterized in that: the connection relationship between the screw rod (35) and the translation support (36) is: on the screw rod A nut (351) is sleeved, and the translation support is a nut seat, and the nut is screwed and connected with the translation support. 8. A servo-controlled flexible pressing device for through-type CNC drilling according to claim 1, characterized in that: one end of the screw rod (35) is installed on the bottom plate through the bearing seat (352), and the other end is passed through Screw mandrel seat (353) is installed on base plate. 9. A servo-controlled flexible pressing device for through-type CNC drilling according to claim 1, characterized in that: the number of the servo motor (31) is 1, and the number of screw rods (35) is 2 , through 1 servo motor and 1 belt (33), synchronously drive 2 screw mandrels to rotate, make 2 movable rubber wheel seats 382 translate synchronously, drive a pinch wheel seat plate 37 to translate along the Y-axis positive direction. 10. A servo-controlled flexible pressing device for through-type CNC drilling according to claim 1, characterized in that: there are two lifting cylinders (22), and each lifting cylinder is connected to the movable joint (27) The side positioning strips (21) join.