CN115055717A

CN115055717A - Duplex position numerical control round nut drilling machine

Info

Publication number: CN115055717A
Application number: CN202210725762.2A
Authority: CN
Inventors: 王智勇; 叶扬; 刘国昌; 汤计勇; 孙超
Original assignee: Jinan Zhongchuan Equipment Co ltd
Current assignee: Jinan Zhongchuan Equipment Co ltd
Priority date: 2022-06-24
Filing date: 2022-06-24
Publication date: 2022-09-16

Abstract

The invention discloses a double-station numerical control round nut drilling machine which comprises a rack, wherein a drilling power head and a dividing head are arranged on the rack, a round nut to be drilled is arranged on the dividing head, two drilling power heads for drilling the round nut are arranged on the rack, the two dividing heads are arranged corresponding to the two drilling power heads, and the numerical control round nut is fixed on the dividing head through a push-pull fixing mechanism. The numerical control vertical drilling machine with double stations controls the rotation angle of the round nut by using a numerical control dividing head, and solves the problem of different hole spacing sizes. The drilling power head controls feeding by a servo motor, so that the drilling depth is effectively controlled, and the depth precision can be controlled within +/-0.05. By combining the numerical control dividing head and the elastic tensioning clamp pushed and pulled by the cylinder, the space between the circular nut and the side hole and the depth qualification rate reach 100 percent. The quick clamping and quick feeding and discharging are adopted, the production efficiency is greatly improved, and the on-time delivery is ensured.

Description

Double-station numerical control round nut drilling machine

Technical Field

The invention relates to the technical field of machining of parts for ships, in particular to a double-station numerical control round nut drilling machine.

Background

In the field of ship manufacturing, a group of round nuts for ship engines are used for connecting and fixing engine parts. Several blind holes are uniformly distributed on the side generatrix of the round nut. When the blind hole of the nut is machined, the machining process and the machining equipment are improved for several times, a leap exists in the aspects of machining quality and production efficiency, and the rest nuts can be machined on the equipment only by replacing the clamp.

When the round nut side bus is machined to form a hole, a scribing and drilling mode is adopted at the beginning, the round nut is placed on a V-shaped frame, the round nut is manually rotated by an angle after the round nut side bus is drilled, the hole intervals are different in size, the machined holes cannot be uniformly distributed and are different in depth, the product percent of pass is only about 60%, the production efficiency is very low, and the on-time delivery is influenced.

Disclosure of Invention

In order to overcome the problems in the prior art, the invention provides a double-station numerical control round nut drilling machine.

The technical scheme adopted by the invention for solving the technical problem is as follows: this duplex position numerical control round nut drilling machine, including the frame, install drilling unit head and dividing head in the frame, treat that the round nut of drilling installs on the dividing head, be equipped with two drilling unit heads that carry out drilling to the round nut in the frame, correspond two drilling unit heads and set up two dividing heads, the round nut is fixed in on the numerical control dividing head through push-and-pull fixed establishment.

Furthermore, the push-pull fixing mechanism drives the pull rod, the pressing plate and the tensioning sleeve to fix and loosen the round nut through the reciprocating motion of the push-pull air cylinder.

Furthermore, a tensioning sleeve is arranged on the numerical control dividing head, a round nut is sleeved outside the tensioning sleeve, the pull rod penetrates through the tensioning sleeve from the axial center of the tensioning sleeve and then is fixed by the nut, and a pressure plate is arranged between the nut and the tensioning sleeve.

Furthermore, the tensioning sleeve is a sleeve corresponding to the round nut, the tensioning sleeve is provided with vertically staggered adjusting openings, and the tensioning sleeve is provided with an inner taper hole with a small top opening and a large bottom opening.

Furthermore, an inner taper hole corresponding to the bottom of the tensioning sleeve is arranged on an outer taper of a fixing seat of the numerical control dividing head, a round nut is sleeved on the outer diameter of the tensioning sleeve, the push-pull cylinder drives the pull rod and the open pressing plate to move, the pressing plate is tightly pressed on the top of the tensioning sleeve, an inner hole of the round nut is tensioned by the tensioning sleeve, the push-pull cylinder drives the pull rod to move after drilling is finished, the pull rod drives the pressing plate to move, and the tensioning sleeve returns to the original state under the action of elastic force.

Further, the top of frame is equipped with the lathe panel, and two forked tail slides are fixed on the lathe panel, correspond from top to bottom with the drill bit unit head, and the numerical control dividing head passes through the riser and installs on the slider part of forked tail slide, and the slide rail part in the forked tail slide is fixed on the lathe panel.

Furthermore, the sliding block part is connected with a hand wheel through a lead screw, and the hand wheel is rotated to adjust the position of the sliding block part on the sliding rail part.

Furthermore, the numerical control power head is arranged vertically, and the round nut is horizontally arranged on the numerical control dividing head.

In summary, the technical scheme of the invention has the following beneficial effects:

the numerical control vertical drilling machine with double stations controls the rotation angle of the round nut by using a numerical control dividing head, and solves the problem of different hole spacing sizes. The drilling power head controls feeding by a servo motor, so that the drilling depth is effectively controlled, and the depth precision can be controlled within +/-0.05.

By combining the numerical control dividing head and the tensioning clamp with the push-pull elasticity of the cylinder, the qualified rate of the distance and the depth of the side holes of the round nut reaches 100 percent. By adopting quick clamping and quick feeding and discharging, the production efficiency is greatly improved, and the on-time delivery is ensured.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a side view of the present invention.

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

Fig. 4 is a perspective view of the push-pull fixing structure.

Figure 5 is a front view of the push-pull securement structure.

Fig. 6 is a sectional view a-a of fig. 5.

Fig. 7 is a structural view of the tensioning sleeve.

Fig. 8 is an axial sectional view of the tensioning sleeve.

In the figure:

the drilling machine comprises a machine frame 1, a cooling system 2, a drilling power head 3, a dividing head 4, a panel 5, a sliding block part 6, a sliding rail part 7, a round nut 8, a push-pull air cylinder 9, a pull rod 10, a pressing plate 11, a nut 12, an adjusting opening 13, an inner taper hole 14, a fixing seat outer cone 15, a vertical plate 16, a bearing 17, a hand wheel 18, a tensioning sleeve 19 and a dividing head connecting plate 20.

Detailed Description

The features and principles of the present invention will be described in detail below with reference to the accompanying drawings, which illustrate embodiments of the invention and are not intended to limit the scope of the invention.

As shown in fig. 1-3, the double-station round nut numerical control vertical drilling machine tool comprises a machine body frame 1, a cooling system 2 and a drilling power head 3 which are arranged on the machine body frame 1, a numerical control dividing head 4 and a control part. The cooling system 2 is independent, a water tank is arranged below the lathe bed frame 1, and cooling liquid flows back to the water tank along a water tank on the periphery of the machine tool panel 5 and is recycled after being filtered. The circulating pump of the cooling system 2 is 0.37 kilowatt, the flow rate is 50 liters/minute, and the lift is 4 meters. The lathe bed frame 1 is welded by square pipes, the protection casing of each side is not installed, the lathe panel 5 is fixed on the frame 1 by the steel sheet, the portal frame is fixed on the panel 5, two drilling power heads 3 are respectively fixed on the portal frame, two dovetail slide plates are fixed on the lathe panel 5 and flush with the power heads up and down, and the dovetail slide plates can adjust the front and back positions of the dividing head 4 clamps to adapt to round nuts 8 of different specifications. The drilling power head 3 and the numerically controlled indexing head 4 are outsourced power units. The two control systems respectively and independently control one drilling and indexing mechanism, namely the two stations are independently controlled. The control system adopts a touch screen type operation panel 5, is controlled by a PLC and can be subjected to man-machine conversation, the angle of each rotation of the dividing head 4 is set according to the number of bus blind holes on the side of the round nut 8, and the processing programs of no less than 30 specifications of round nut 8 products are prestored, so that the counting and counting function is realized. The system is manually and automatically controlled, has a single circulating system, and executes an action cycle by pressing a button once. The control system can be a conventional control system. When power failure and gas stop suddenly, the clamp has a protection function, the round nut 8 cannot be loosened, and the emergency stop button and the safety voltage illuminating lamp are arranged.

Original positions and states of the parts: the cooling system 2 is normally open, cooling water flows into the water tank along the return water pipe, the push-pull air cylinder 9 is in the front position, the tensioning sleeve 19 is in the loosening state, the numerical control dividing heads 4 are equally divided according to the number of drilled holes, the positions are in the zero position, and the drilling power head 3 is in the upper position.

Install drilling unit head 3 and dividing head 4 on the frame 1, treat that the round nut 8 of drilling installs on dividing head 4, is equipped with two drilling unit heads 3 that carry out drilling to round nut 8 on the frame 1, drilling unit head 3: the power of the motor is 0.55 kilowatt, the rotating speed is 960 rpm, the cutting feed stroke is 0-40mm, the pneumatic feed thrust is 2.7 kilo-newtons, the feed speed is stepless speed regulation, and hydraulic damping buffering is realized. Two dividing heads 4 are arranged corresponding to the two drilling power heads 3, and a round nut 8 is fixed on the dividing heads 4 through a push-pull fixing mechanism. The numerical control rotary dividing head with large aperture 4 has the transmission ratio of a worm gear to a worm gear of 1:90, the fastest rotating speed of 16.6 revolutions per minute, the hollow aperture of 40mm, the precision of the dividing head of 4 seconds, the repeated precision of 8 seconds, the pneumatic braking force of 55 kilograms, the matching servo motor of 0.75 kilowatt and the torque of 3 N.m.

As shown in fig. 4-6, the push-pull fixing mechanism drives the pull rod 10, the press plate 11 and the tensioning sleeve 19 to fix and release the round nut 8 by the reciprocating motion of the push-pull cylinder 9. The diameter of the push-pull air cylinder 9 is 80mm, the effective stroke is 10mm, the effective pulling force is 272 kg, and the push-pull fixing mechanism is horizontally arranged.

The numerical control dividing head 4 is provided with a tensioning sleeve 19, a round nut 8 is sleeved outside the tensioning sleeve 19, a pull rod 10 penetrates through the tensioning sleeve 19 from the axis position of the tensioning sleeve 19 and then is fixed by a nut 12, a pressure plate 11 is arranged between the nut 12 and the tensioning sleeve 19, and a bearing 17 is arranged between the nut 12 and the pressure plate 11. As shown in fig. 7 and 8, the tensioning sleeve 19 is a sleeve corresponding to the round nut 8, and the tensioning sleeve 19 is provided with adjusting gaps 13 staggered up and down or adjusting gaps 13 symmetrical up and down. The form of the adjustment slit 13 may be other than the above-described form as long as the expansion and automatic recovery of the tension sleeve 19 can be achieved. And the tensioning sleeve 19 is provided with an inner taper hole 14 with a small top opening and a large bottom opening. The inner taper hole 14 corresponding to the bottom of the tensioning sleeve 19 is placed on the fixing seat outer taper 15 of the dividing head connecting disc 20 of the numerical control dividing head 4, the round nut 8 is sleeved on the outer diameter of the tensioning sleeve 19, the push-pull cylinder 9 drives the pull rod 10 and the open pressing plate 11 to move, the pressing plate 11 is tightly pressed on the top of the tensioning sleeve 19, the tensioning sleeve 19 tightly presses the inner hole of the round nut 8, the push-pull cylinder 9 drives the pull rod 10 to move after drilling is finished, the pull rod 10 drives the pressing plate 11 to move, and the tensioning sleeve 19 returns to the original state under the action of elastic force. The tensioning sleeve 19 plays a role in clamping and loosening the round nut 8, is made of spring steel through machining and heat treatment, has the hardness of HRC58-62 after the heat treatment, and has high hardness, good elasticity and wear resistance.

The top of frame 1 is equipped with lathe panel 5, and two forked tail slides are fixed on lathe panel 5, correspond from top to bottom with the drill bit unit head, and dividing head 4 passes through riser 16 to be installed on the slider part 6 of forked tail slide, and slide rail part 7 in the forked tail slide is fixed on lathe panel 5. The pull rod 10 of the push-pull air cylinder 9 penetrates through the vertical plate 16 and then is connected with the pressing plate 11. The sliding block part 6 is connected with a hand wheel 18 through a lead screw, and the hand wheel 18 is rotated to adjust the position of the sliding block part 6 on the sliding rail part 7. The bottom of the vertical plate 16 is provided with a guide groove for positioning, the sliding block is provided with a guide strip matched with the guide groove for guiding, and the vertical plate 16 is fixed on the sliding block through a screw.

The numerical control power head is vertically arranged, and the round nut 8 is horizontally arranged on the dividing head 4.

Working principle and action sequence: 1. the round nut 8 is put in place, the switch is started by pedaling, the push-pull cylinder 9 drives the tensioning sleeve 19 to move through the action of the pull rod 10, and the round nut 8 is clamped tightly. 2. The drilling power head 3 respectively acts according to the sequence of fast forward, slow forward (contacting with the round nut 8), power forward (to the set depth) and fast backward. 3. The numerical control dividing head 4 is provided with a round nut 8 to rotate by a set angle. 4. The drilling power head 3 moves in the sequence of fast forward, slow forward (contacting with the round nut 8), the round nut 8 (to a given depth) and fast backward. 5. Repeating the

actions

3 and 4 until the holes with the preset equal division are drilled. 6. The push-pull cylinder 9 is loosened, the tensioning sleeve 19 loosens the round nut 8, the round nut 8 is taken down, and one action cycle is completed.

The push-pull cylinder 9 and the tensioning sleeve 19 are respectively fixed on two side surfaces of the dividing head 4 and connected by a pull rod 10. The working principle is as follows: after the round nut 8 is placed on the tensioning sleeve 19, the cylinder push-pull mechanism drives the pull rod 10 to move, the pull rod 10 drives the pressing plate 11 to press the tensioning sleeve 19, the tensioning sleeve 19 then tensions an inner hole of the round nut 8, the round nut 8 is firmly fixed on the tensioning sleeve 19, the mechanism drills according to the actions until the last hole is machined, the cylinder push-pull mechanism drives the pull rod 10 to move, the pull rod 10 drives the open pressing plate 11 to move, the tensioning sleeve 19 returns to the original state, the open pressing plate 11 is taken down, the round nut 8 is taken down, and the drilling work is completed.

The numerical control vertical drilling machine with double stations uses the numerical control dividing head 4 to control the rotation angle of the round nut 8, and solves the problem of different hole spacing sizes. The drilling power head 3 controls feeding by a servo motor, so that the drilling depth is effectively controlled, and the depth precision can be controlled within +/-0.05.

By combining the numerical control dividing head 4 and the elastic tensioning clamp pushed and pulled by the cylinder, the space between the circular nut 8 and the side hole and the depth qualification rate reach 100 percent. The quick clamping and quick feeding and discharging are adopted, the production efficiency is greatly improved, and the on-time delivery is ensured.

A plurality of drilling machines can be enclosed, and a worker can operate the plurality of drilling machines by standing in the middle.

The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the present invention by those skilled in the art without departing from the spirit of the present invention are intended to be covered by the protection scope defined by the claims of the present invention.

Claims

1. The double-station numerical control round nut drilling machine is characterized in that two drilling power heads for drilling a round nut are arranged on the machine frame, two dividing heads are arranged corresponding to the two drilling power heads, and the round nut is fixed on the numerical control dividing head through a push-pull fixing mechanism.

2. The double-station numerical control round nut drilling machine according to claim 1, wherein the push-pull fixing mechanism drives the pull rod, the pressure plate and the tensioning sleeve to fix and loosen the round nut through the reciprocating motion of the push-pull cylinder.

3. The double-station numerical control round nut drilling machine as claimed in claim 2, wherein the numerical control dividing head is provided with a tensioning sleeve, the round nut is sleeved outside the tensioning sleeve, the pull rod penetrates through the tensioning sleeve from the axial center of the tensioning sleeve and then is fixed by the nut, and a pressure plate is arranged between the nut and the tensioning sleeve.

4. The double-station numerical control round nut drilling machine as claimed in claim 3, wherein the tensioning sleeve is a sleeve corresponding to the round nut, the tensioning sleeve is provided with adjusting notches staggered up and down, and the tensioning sleeve is provided with an inner taper hole with a top opening, a small bottom opening and a large bottom opening.

5. The double-station numerical control round nut drilling machine as claimed in claim 3, wherein the inner taper hole corresponding to the bottom of the tensioning sleeve is placed on the outer taper of the fixing seat of the numerical control dividing head, the round nut is sleeved on the outer diameter of the tensioning sleeve, the push-pull cylinder drives the pull rod and the open pressing plate to move, the pressing plate is pressed on the top of the tensioning sleeve, the tensioning sleeve tightly presses the inner hole of the round nut, the push-pull cylinder drives the pull rod to move after drilling is finished, the pull rod drives the pressing plate to move, and the tensioning sleeve returns to the original state under the action of elastic force.

6. The double-station numerical control round nut drilling machine according to claim 1, characterized in that a machine tool panel is arranged at the top of the machine frame, two dovetail sliding plates are fixed on the machine tool panel and vertically correspond to the drill power head, the numerical control dividing head is installed on a sliding block part of the dovetail sliding plates through a vertical plate, and a sliding rail part in the dovetail sliding plates is fixed on the machine tool panel.

7. The double-station numerical control circular nut drilling machine according to claim 6, characterized in that the sliding block part is connected with a hand wheel through a lead screw, and the hand wheel is rotated to adjust the position of the sliding block part on the sliding rail part.

8. The double-station numerical control round nut drilling machine according to claim 1, characterized in that the numerical control power head is arranged vertically, and a round nut is horizontally arranged on the numerical control dividing head.