CN118875337A - A CNC machine tool for turning sheet metal parts - Google Patents

Abstract

The invention belongs to the technical field of turning machine tools, and particularly relates to a numerical control machine tool for turning sheet metal parts, which comprises a machine tool main body, a chuck assembly, a cutter head assembly and a control host, wherein the chuck assembly is arranged at the output end of a main shaft of the machine tool main body, the cutter head assembly is arranged at the output end of a feed shaft, the control host is arranged on the outer side wall of the machine tool main body, a collecting groove is formed in the machine tool main body, a receiving hopper is slidably arranged at a notch of the collecting groove, and a connecting assembly is jointly arranged on the side wall of the receiving hopper and the cutter head assembly. The invention can automatically remind personnel to check the cutter of the cutter head assembly based on the temperature and the scrap amount when the cooling liquid flows back, can improve the use convenience of the numerical control lathe and the turning quality of the sheet metal part under the condition of ensuring timely replacement of the cutter, and can assist the circulated cooling liquid to radiate and cool.

Description

A CNC machine tool for turning sheet metal parts

Technical Field

The invention belongs to the technical field of turning machine tools, and in particular relates to a numerically controlled machine tool for turning sheet metal parts.

Background Art

In modern manufacturing, sheet metal parts are increasingly used. Turning is an important means of forming sheet metal parts. Traditional lathes face many challenges during processing, such as rapid tool wear, difficulty in ensuring processing accuracy, and easy deformation of sheet metal parts.

At present, when sheet metal parts are turned, since the parts of sheet metal parts are usually soft and have a small diameter, the sheet metal parts are easily deformed due to the accumulation of turning heat during processing. In order to avoid this phenomenon, it is necessary to cool the tool at the turning processing position to dissipate heat, which can not only cool the tool and the sheet metal parts in time, but also facilitate the collection of turning waste chips. For example, a CNC machine tool for turning sheet metal parts disclosed in patent publication number CN115319124B; when the tool of the lathe processes the sheet metal parts, the tool will be worn due to the turning force between the tool and the sheet metal parts. When the tool wears more seriously, it will affect the processing quality of the sheet metal parts. Therefore, before processing the sheet metal parts, the staff usually needs to check the tool to decide whether to replace the tool. However, if the staff ignores the check of the tool before processing the sheet metal parts, it may cause the tool to be excessively worn or cause the turned sheet metal parts to be scrapped. At the same time, if the tool is checked every time, it will increase the cumbersomeness of using the CNC machine tool.

Summary of the invention

The purpose of the present invention is to provide a CNC machine tool for sheet metal turning in view of the above problems.

To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a CNC machine tool for sheet metal turning, comprising a machine tool body, a chuck assembly, a cutter disc assembly and a control host, the chuck assembly is installed at the spindle output end of the machine tool body, the cutter disc assembly is installed at the output end of the feed shaft, the control host is installed on the outer wall of the machine tool body, a collecting groove is provided inside the machine tool body, and a receiving hopper is slidably provided at the groove opening of the collecting groove, a connecting assembly is installed together with the side wall of the receiving hopper and the cutter disc assembly, a square tube is fixedly inserted at the lower end of the receiving hopper, a light inspection mechanism is installed on the side wall of the square tube, a temperature detection mechanism is installed at the material outlet of the square tube, an installation groove is provided on the side wall of the machine tool body, two side plates are fixedly installed on the groove wall of the installation groove, and a driving motor is fixedly inserted together with the side walls of the two side plates, and the driving motor is controlled by The control host is electrically connected to the optical inspection mechanism and the temperature detection mechanism, the output end of the drive motor and one of the side panels are jointly installed with a photoelectric trigger mechanism, the side wall of one of the side panels is installed with a first counter, and the side wall of the other side panel is installed with multiple second counters, each of the second counters corresponds to each tool on the tool disc assembly, the side wall of the machine tool body is fixedly installed with a first buzzer and a second buzzer, the first counter is electrically connected to the first buzzer through the control host, and each of the second counters is electrically connected to the second buzzer through the control host, a heat dissipation groove connected to the installation groove is opened inside the machine tool body, the drive motor and the heat dissipation groove are jointly installed with a heat dissipation mechanism, the side wall of the machine tool body is installed with a circulating cooling mechanism connected to the collection groove, and a separation and diversion mechanism is installed inside the collection groove.

In the above-mentioned CNC machine tool for sheet metal turning, the connecting assembly includes a connecting plate fixedly mounted on the outer wall of the material receiving hopper, a strip hole is opened on the end face of the connecting plate, and a movable column is slidably inserted inside the strip hole, and the movable column is fixed to the bottom of the outer shell of the cutter disc assembly.

In the above-mentioned CNC machine tool for sheet metal turning, the optical inspection mechanism includes fixed grooves opened on two opposite inner walls of a square tube, a light board is fixedly installed at the bottom of one of the fixed grooves, and a photodiode component is fixedly installed inside the other fixed groove, and the notches of the two fixed grooves are fixedly encapsulated with transparent plates, the light board is electrically connected to the control host, a resistance adjustment component is fixedly installed at the bottom of the heat dissipation groove, and the photodiode component is electrically connected to the drive motor through the resistance adjustment component and the control host.

In the above-mentioned CNC machine tool for sheet metal turning, the temperature detection mechanism includes a supporting plate arranged under the square tube, the end face of the supporting plate is provided with a groove, and the notch of the groove is fixedly installed with an insulating heat-conducting plate, and the lower end of the insulating heat-conducting plate is fixedly installed with a thermistor plate, and the thermistor plate is connected in series in the connection circuit of the photodiode component, the resistance adjustment component, the control host and the drive motor, and the supporting plate and the outer side wall of the square tube are jointly installed with multiple elastic support components.

In the above-mentioned CNC machine tool for sheet metal turning, the photoelectric trigger mechanism includes an insulating turntable fixedly sleeved on the outside of the output end of the driving motor, and a spotlight is fixedly installed at the eccentric position of the side wall of the insulating turntable close to the side panel. A circular groove corresponding to the position of the spotlight is opened on the side wall of one of the side panels, and a photoelectric switch is fixedly installed inside the circular groove. The light emitted by the spotlight is irradiated to the photosensitive end of the photoelectric switch. A rotating conductive ring is fixedly sleeved on the outer wall of the insulating turntable, and an insulating support frame is fixedly installed on the side wall of one of the side panels, and a conductive head is fixedly installed on the end of the insulating support frame, and the end of the conductive head is in contact with the outer wall of the rotating conductive ring. The control host is electrically connected to the spotlight through the conductive head and the rotating conductive ring, and the photoelectric switch is electrically connected to the first counter and each second counter through the control host.

In the above-mentioned CNC machine tool for sheet metal turning, the heat dissipation mechanism includes an aluminum alloy plate fixedly inserted in the bottom of the heat dissipation groove, and the aluminum alloy plate passes through the groove wall of the collection groove, and a plurality of heat conducting rods are fixedly inserted in the side wall of the aluminum alloy plate, an impeller is fixedly installed at the output end of the driving motor, and an air outlet is opened on the upper groove wall of the heat dissipation groove.

In the above-mentioned CNC machine tool for sheet metal turning, the circulating cooling mechanism includes a circulating pump fixedly mounted on the lower end of the outer wall of the machine tool body, and the suction end of the circulating pump is connected with the interior of the collecting tank, the output end of the circulating pump is fixedly mounted with an output pipe, and the pipe end of the output pipe is fixedly connected with a connecting hose, a fixed plate is fixedly mounted on the upper end of the outer shell of the cutter disc assembly, and a movable pipe is fixedly mounted on the side wall of the fixed plate, and the movable pipe is connected with the connecting hose, the liquid outlet end of the movable pipe is fixedly connected with a hollow plate, and three circular holes are opened at the lower end of the hollow plate, two of which are provided with pressure valves, and the thermistor plate is electrically connected to the circulating pump through the control host.

In the above-mentioned CNC machine tool for sheet metal turning, the separation and diversion mechanism includes a separation net installed on the upper side of the notch of the collecting tank, a baffle is provided below the separation net, and the baffle is fixed inside the collecting tank, and the baffle is arranged above the suction end of the circulating pump.

In the above-mentioned CNC machine tool for sheet metal turning, the resistance adjustment component includes an electromagnetic push rod fixedly installed inside a heat dissipation groove, and an insulating movable block is fixedly installed on the output end of the electromagnetic push rod, a sliding conductive ring is fixedly inserted on the side wall of the insulating movable block, a connecting block is fixedly installed on the groove wall of the heat dissipation groove, and a resistor rod is fixedly installed on the side wall of the connecting block, and the sliding conductive ring is in sliding contact with the resistor rod, the photodiode component is electrically connected to the electromagnetic push rod through a control host, and the sliding conductive ring and the resistor rod are connected in series with a drive motor and a thermistor plate through the control host.

Compared with the existing technology, the advantages of a CNC machine tool for sheet metal turning are:

1. Through the cooperation of the machine tool body, chuck assembly, cutter disc assembly and control host, sheet metal parts can be turned, and through the cooperation of the collecting trough, receiving hopper, connecting assembly and square tube, the receiving hopper can be moved synchronously with the movement of the cutter disc assembly, so that the flowing coolant and waste chips can be caught at any time, and through the cooperation of the optical inspection mechanism, temperature detection mechanism, mounting groove, side plate, drive motor, photoelectric trigger mechanism, first counter, second counter, first buzzer and second buzzer, based on the temperature of the coolant when it flows back and the waste chip content contained, and based on the working time of the cutter disc assembly, the personnel can be automatically reminded to check the tool of the cutter disc assembly, so as to avoid the staff forgetting to check the cutter disc assembly, and there is no need for the staff to check the tool before turning the sheet metal parts every time, thereby improving the convenience of using the CNC lathe.

2. Through the cooperation of the heat dissipation groove and the heat dissipation mechanism, the driving motor used for counting can be used to assist the rapid dissipation of heat in the reflux coolant, thereby improving the effect of coolant circulation cooling, and avoiding excessive heat accumulation in the processed sheet metal parts due to the failure to dissipate the heat of the coolant in time, which affects the turning quality of the sheet metal parts.

3. Through the circulating cooling mechanism, the coolant can be circulated to the processing positions of sheet metal parts and tools, so that the tools and sheet metal parts can be cooled and cooled to avoid excessive temperature accumulation at the sheet metal parts. Secondly, the output power of the circulating pump can be automatically adjusted based on the reflux temperature of the coolant, so that when the friction temperature between the tool and the sheet metal part is high, the spraying amount and spraying range of the coolant can be automatically increased to improve the cooling effect on the sheet metal parts and tools.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of a CNC machine tool for sheet metal turning provided by the present invention;

FIG2 is a schematic cross-sectional view of a CNC machine tool for sheet metal turning provided by the present invention;

3 is a schematic diagram of the connection structure between a hopper and a movable column of a CNC machine tool for sheet metal turning provided by the present invention;

FIG4 is a schematic diagram of a top view of a material receiving hopper of a CNC machine tool for sheet metal turning provided by the present invention;

FIG5 is an enlarged structural view of part A in FIG3 of a CNC machine tool for sheet metal turning provided by the present invention;

6 is a schematic diagram of the internal structure of a mounting slot of a CNC machine tool for sheet metal turning provided by the present invention;

FIG7 is an enlarged structural view of part B in FIG6 of a CNC machine tool for sheet metal turning provided by the present invention;

FIG8 is an enlarged structural view of the C portion of FIG2 of a CNC machine tool for sheet metal turning provided by the present invention;

FIG. 9 is a schematic diagram of the internal structure of a hollow plate of a CNC machine tool for sheet metal turning provided by the present invention.

In the figure: 1 machine tool body, 2 chuck assembly, 3 cutter head assembly, 4 control host, 5 collecting slot, 6 receiving hopper, 7 connecting assembly, 71 connecting plate, 72 bar hole, 73 moving column, 8 square tube, 9 light inspection mechanism, 91 fixed slot, 92 light board, 93 photodiode assembly, 94 transparent plate, 95 resistance adjustment assembly, 10 temperature detection mechanism, 101 supporting plate, 102 groove, 103 insulating heat conductive plate, 104 thermistor plate, 105 elastic support assembly, 11 mounting slot, 12 side plate, 13 driving motor, 14 photoelectric trigger mechanism, 141 insulating turntable, 142 spotlight, 143 round slot, 144 photoelectric switch, 145 rotary A transfer conductive ring, 146 an insulating support frame, 147 a conductive head, 15 a first counter, 16 a second counter, 17 a first buzzer, 18 a second buzzer, 19 a heat sink, 20 a heat dissipation mechanism, 201 an aluminum alloy plate, 202 a heat conducting rod, 203 an impeller, 204 an air outlet, 21 a circulating cooling mechanism, 211 a circulating pump, 212 an output pipe, 213 a connecting hose, 214 a fixing plate, 215 a movable pipe, 216 a hollow plate, 217 a circular hole, 218 a pressure valve, 22 a separation guide mechanism, 221 a separation net, 222 a baffle, 23 an electromagnetic push rod, 24 an insulating movable block, 25 a sliding conductive ring, 26 a connecting block, and 27 a resistor rod.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

As shown in Figures 1 to 9, a CNC machine tool for sheet metal turning includes a machine tool body 1, a chuck assembly 2, a cutter disc assembly 3 and a control host 4. The chuck assembly 2 is installed at the spindle output end of the machine tool body 1, the cutter disc assembly 3 is installed at the output end of the feed shaft, and the control host 4 is installed on the outer wall of the machine tool body 1. A collecting groove 5 is opened inside the machine tool body 1, and a receiving hopper 6 is slidably provided at the notch of the collecting groove 5. The side wall of the receiving hopper 6 and the cutter disc assembly 3 are jointly installed with a connecting assembly 7. The connecting assembly 7 includes a connecting plate 71 fixedly installed on the outer wall of the receiving hopper 6, a strip hole 72 is opened on the end face of the connecting plate 71, and a moving column 73 is slidably inserted in the strip hole 72, and the moving column 73 is fixed to the bottom of the outer shell of the cutter disc assembly 3. The moving column 73 can move forward and backward along the strip hole 72 to avoid affecting the normal movement of the cutter disc assembly 3.

A square tube 8 is fixedly inserted at the lower end of the receiving hopper 6, and a light detection mechanism 9 is installed on the side wall of the square tube 8. The light detection mechanism 9 includes fixed grooves 91 opened on two opposite inner walls of the square tube 8, a light board 92 is fixedly installed at the bottom of one of the fixed grooves 91, and a photodiode component 93 is fixedly installed inside the other fixed groove 91, and the notches of the two fixed grooves 91 are fixedly packaged with a transparent plate 94, the light board 92 is electrically connected to the control host 4, a resistance adjustment component 95 is fixedly installed at the bottom of the heat dissipation groove 19, and the photodiode component 93 is electrically connected to the drive motor 13 through the resistance adjustment component 95 and the control host 4, the resistance adjustment component 95 includes an electromagnetic push rod 23 fixedly installed inside the heat dissipation groove 19, and an insulating movable block 24 is fixedly installed at the output end of the electromagnetic push rod 23, and the insulating movable block 24 is fixedly installed at the output end of the electromagnetic push rod 23. The side wall of the block 24 is fixedly plugged with a sliding conductive ring 25, the groove wall of the heat dissipation groove 19 is fixedly installed with a connecting block 26, and the side wall of the connecting block 26 is fixedly installed with a resistor rod 27, and the sliding conductive ring 25 is in sliding contact with the resistor rod 27, the photodiode component 93 is electrically connected to the electromagnetic push rod 23 through the control host 4, the sliding conductive ring 25 and the resistor rod 27 are connected in series with the drive motor 13 and the thermistor plate 104 through the control host 4, the electromagnetic push rod 23 includes a magnetic isolation cylinder, a telescopic rod, a permanent magnet, an electromagnetic part, an elastic element and other components. After the electromagnetic part is energized, the permanent magnet will be repelled under the action of like-charge repulsion, thereby driving the telescopic rod to be ejected. After power is off, under the action of the elastic element, the permanent magnet and the telescopic rod will move back and reset. This is an existing mature technology, so it will not be described here.

The discharge port of the square tube 8 is equipped with a temperature detection mechanism 10, which includes a support plate 101 arranged below the square tube 8, a groove 102 is provided on the end surface of the support plate 101, and an insulating heat-conducting plate 103 is fixedly installed at the notch of the groove 102, and a thermistor plate 104 is fixedly installed at the lower end of the insulating heat-conducting plate 103, and the thermistor plate 104 is connected in series in the connection circuit of the photodiode component 93, the resistance adjustment component 95, the control host 4 and the drive motor 13, and the support plate 101 and the outer side wall of the square tube 8 are jointly equipped with a plurality of elastic support components 105. Each elastic support component 105 includes components such as a cylinder, a T-shaped rod, and a spring. The cylinder is fixedly connected to the outer wall of the square tube 8. The lower end of the T-shaped rod is fixedly connected to the support plate 101. The T-shaped rod is slidably connected to the cylinder, and the spring is arranged between the T-shaped rod and the cylinder. When the coolant flows downward, under the action of the gravity of the coolant and waste chips, the support plate 101 will move down a certain distance. At this time, the coolant can be discharged through the square tube 8, and the support plate 101 can slow down the discharge speed of the coolant so that the photodiode component 93 can fully detect the refluxed coolant.

The side wall of the machine tool body 1 is provided with a mounting groove 11, and two side panels 12 are fixedly installed on the groove wall of the mounting groove 11, and a driving motor 13 is fixedly plugged into the side walls of the two side panels 12. The driving motor 13 is electrically connected to the optical inspection mechanism 9 and the temperature detection mechanism 10 through the control host 4. The output end of the driving motor 13 and one of the side panels 12 are jointly installed with a photoelectric trigger mechanism 14. The photoelectric trigger mechanism 14 includes an insulating turntable 141 fixedly sleeved on the outer side of the output end of the driving motor 13, and a spotlight 142 is fixedly installed at the eccentric position of the side wall of the insulating turntable 141 close to the side panel 12. A circular groove 143 corresponding to the position of the spotlight 142 is provided on the side wall of one of the side panels 12, and a photoelectric switch 144 is fixedly installed inside the circular groove 143. The spotlight 142 emits The light emitted is irradiated to the photosensitive end of the photoelectric switch 144, and the outer wall of the insulating turntable 141 is fixedly sleeved with a rotating conductive ring 145, and the side wall of one of the side panels 12 is fixedly installed with an insulating support frame 146, and the end of the insulating support frame 146 is fixedly installed with a conductive head 147, and the end of the conductive head 147 is in contact with the outer wall of the rotating conductive ring 145. The control host 4 is electrically connected to the spotlight 142 through the conductive head 147 and the rotating conductive ring 145, and the photoelectric switch 144 is electrically connected to the first counter 15 and each second counter 16 through the control host 4. When the photoelectric switch 144 receives the electrical signal emitted by the spotlight 142, it can convert the optical signal into an electrical signal and transmit it to the control host 4. This is an existing mature technology, so it will not be elaborated here.

A first counter 15 is installed on the side wall of one of the side panels 12, and a plurality of second counters 16 are installed on the side wall of the other side panel 12, each second counter 16 corresponds to each tool on the cutter head assembly 3, and a first buzzer 17 and a second buzzer 18 are fixedly installed on the side wall of the machine tool body 1. The first counter 15 is electrically connected to the first buzzer 17 through the control host 4, and each second counter 16 is electrically connected to the second buzzer 18 through the control host 4. A heat dissipation groove 19 connected to the mounting groove 11 is provided inside the machine tool body 1, and the drive motor 13 is connected to the heat dissipation groove 19. The grooves 19 are jointly installed with a heat dissipation mechanism 20, and the heat dissipation mechanism 20 includes an aluminum alloy plate 201 fixedly plugged into the bottom of the heat dissipation groove 19, and the aluminum alloy plate 201 penetrates the groove wall of the collecting groove 5, and a plurality of heat-conducting rods 202 are fixedly plugged into the side wall of the aluminum alloy plate 201. An impeller 203 is fixedly installed at the output end of the driving motor 13, and an air outlet 204 is provided on the upper groove wall of the heat dissipation groove 19. When the impeller 203 rotates, external air can be sucked in and transported to the inside of the heat dissipation groove 19 to form wind flow. The flow of wind can assist in dissipating the temperature of the heat-conducting rod 202 and the aluminum alloy plate 201.

The side wall of the machine tool body 1 is installed with a circulating cooling mechanism 21 connected with the collecting tank 5. The circulating cooling mechanism 21 includes a circulating pump 211 fixedly installed at the lower end of the outer wall of the machine tool body 1, and the suction end of the circulating pump 211 is connected with the inside of the collecting tank 5. The output end of the circulating pump 211 is fixedly installed with an output pipe 212, and the pipe end of the output pipe 212 is fixedly connected with a connecting hose 213. A fixed plate 214 is fixedly installed at the upper end of the shell of the cutter head assembly 3, and a movable pipe 215 is fixedly installed on the side wall of the fixed plate 214, and the movable pipe 215 is connected with the connecting hose 213. The movable pipe 215 The liquid outlet end is fixedly connected to a hollow plate 216, and three circular holes 217 are opened at the lower end of the hollow plate 216, two of which are provided with pressure valves 218. The thermistor plate 104 is electrically connected to the circulation pump 211 through the control host 4. After the hydraulic pressure inside the hollow plate 216 increases, the valve plate of the pressure valve 218 will be pushed open due to the increase in pressure. At this time, the coolant can be sprayed out from the three circular holes 217 together, increasing the coverage of the coolant. Secondly, a discharge pipe (not shown in the figure) is inserted into the pipe wall of the output pipe 212 for discharging the coolant when replacing the coolant.

A separation and diversion mechanism 22 is installed inside the collecting tank 5, and the separation and diversion mechanism 22 includes a separation net 221 installed on the upper side of the notch of the collecting tank 5. A baffle 222 is provided below the separation net 221, and the baffle 222 is fixed inside the collecting tank 5. The baffle 222 is arranged above the suction end of the circulation pump 211. The separation net 221 can be slid out, so that personnel can clean up the waste debris trapped by the separation net 221 conveniently.

The operating principle of the present invention is now described as follows: when processing a sheet metal part, the sheet metal part to be processed is mounted on the chuck assembly 2, and then the turning operation of the sheet metal part is started by controlling the host computer 4. After the host computer 4 is started, the chuck assembly 2 is controlled to drive the sheet metal part to rotate according to the speed set by the preset program, and the cutter disc assembly 3 is controlled to drive the tool to move to the sheet metal part, and then the sheet metal part can be turned. At the same time, the host computer 4 controls the circulation pump 211 to start working, and the circulation pump 211 can extract the coolant in the collection tank 5 and transfer the coolant to the collection tank 5 through the output pipe 212, the connecting hose 213 and the movable pipe 215. The liquid is transported to the inside of the hollow plate 216, and finally sprayed out through the circular hole 217 without the pressure valve 218 installed. The sprayed coolant will contact the processed position of the tool and the sheet metal part, so as to take away the heat generated by the tool and the sheet metal part during turning. The coolant after heat exchange will carry the waste chips generated during turning and fall down. The falling coolant and waste chips will enter the receiving hopper 6 and flow back to the collecting tank 5 through the square pipe 8. When the control host 4 controls the movement of the cutter disc assembly 3, it will drive the moving column 73 to move synchronously. The moving column 73 will drive the receiving hopper 6 to move synchronously through the connecting plate 71, so that the receiving hopper 6 is always below the cutter disc assembly 3.

After the control host 4 is started, the drive motor 13 will be started synchronously, and power will be supplied to the spotlight 142 through the conductive head 147 and the rotating conductive ring 145. The operation of the drive motor 13 will drive the insulating turntable 141 to rotate, thereby driving the spotlight 142 to rotate. Every time the spotlight 142 rotates one circle, it will pass through the photoelectric switch 144 once. When the spotlight 142 passes through the photoelectric switch 144, the light emitted by the spotlight 142 will irradiate the photosensitive end of the photoelectric switch 144. The photoelectric switch 144 will convert the optical signal into an electrical signal and transmit the electrical signal to the control host 4. When the spotlight 142 leaves the photoelectric switch 144, the electrical signal transmitted to the control host 4 by the photoelectric switch 144 disappears. Therefore, every time the spotlight 142 passes through the photoelectric switch 144 once, the photoelectric switch 144 will output an electrical signal to the control host 4. Every time the control host 4 receives the electrical signal, it will The first counter 15 and the second counter 16 corresponding to the tool working at this time are controlled to count once. When the count of the first counter 15 reaches the set value, the first counter 15 will output a signal to the control host 4. Then, the control host 4 will control the first buzzer 17 to start the alarm work. After the personnel hear the alarm signal of the first buzzer 17, they will seal the front side wall of the machine tool body 1 (the front side wall of the collecting tank 5 is provided with an opening at the position above the separation net 221. The opening is used for the staff to turn out the waste chips generated by turning. In order to prevent the coolant from flowing out of the opening, the front side wall of the machine tool body 1 is equipped with a sealing cover plate matching the opening). Then, the waste chips above the separation net 221 are cleaned and turned out. After the staff hears the alarm signal of the second buzzer 18, it is necessary to check the tool to determine whether the tool needs to be replaced to ensure that the worn tool can be replaced in time;

In the process of turning the sheet metal, if the contact area between the tool and the sheet metal is large, the amount of waste chips generated by turning increases, and the temperature generated by turning increases, so the temperature of the coolant flowing down from the receiving hopper 6 increases, and due to the increase in the amount of waste chips, the transmittance of the coolant becomes poor. When the temperature of the coolant increases, part of the heat of the coolant will be conducted to the thermistor plate 104 through the insulating heat conductive plate 103, and the temperature of the thermistor plate 104 will increase accordingly (the thermistor plate 104 is composed of a plurality of negative temperature coefficient thermistors, and the effective temperature range of the detection is within the range of 0°C to 100°C, that is, within this temperature range, its resistance decreases with the increase of temperature). At this time, the resistance of the thermistor plate 104 decreases, and When there are a lot of waste materials, the transmittance of the coolant becomes poor, so the light intensity that can pass through the coolant and irradiate the photodiode component 93 (the photodiode component 93 includes a plurality of photodiodes connected in series, and in the range of 10Lux to 200Lux, when the light intensity it receives increases, the intensity of the electrical signal generated by the photodiode also increases accordingly) becomes lower. Therefore, after the light intensity received by the photodiode component 93 decreases, the number of photons irradiating the photodiode component 93 decreases, so the number of electron-hole pairs excited by the photodiode component 93 also decreases accordingly, which ultimately leads to a weakening of the electrical signal intensity generated by the photodiode component 93. Therefore, the signal is transported to the inside of the electromagnetic push rod 23 through the control host 4. The current also becomes smaller accordingly. At this time, the distance that the insulating movable block 24 is pushed out by the electromagnetic push rod 23 becomes smaller. Therefore, the contact position between the sliding conductive ring 25 and the resistor rod 27 is close to one end of the electromagnetic push rod 23. At this time, the length of the connection loop between the resistor rod 27 and the sliding conductive ring 25 and the drive motor 13 and the thermistor plate 104 becomes shorter. Therefore, the resistance in the connection loop between the sliding conductive ring 25, the resistor rod 27, the drive motor 13 and the thermistor plate 104 will also decrease. Therefore, when the coolant temperature becomes higher and the amount of waste chips generated by turning increases, the resistance in the connection loop that supplies power to the drive motor 13 will decrease. Therefore, the current intensity passed into the drive motor 13 becomes larger. At this time, the output power of the drive motor 13 becomes larger, so the driving motor 13 drives the insulating turntable 141 to increase its rotation speed. Therefore, in the same time, the photoelectric switch 144 can receive more light signals emitted by the spotlight 142, so the photoelectric switch 144 outputs more electrical signals to the control host 4. Therefore, the counts of the first counter 15 and the second counter 16 will increase in the same time. When the contact area between the tool and the sheet metal is large, the wear area and degree of wear will increase. Therefore, in the turning stage, by increasing the count times of the second counter 16, the inspection time of the tool can be shortened accordingly, ensuring the timeliness of the tool inspection, and avoiding the tediousness of frequent tool inspection.

When the control host 4 controls the tool change of the cutter disc assembly 3 according to the preset program (a plurality of turning tools are installed on the tool mounting disk of the cutter disc assembly 3 for different turning needs. When changing the tool, the control host 4 will control the rotation of the cutter disc assembly 3 through the driving member inside the cutter disc assembly 3, so that the corresponding tool can be rotated to the turning processing position), the control host 4 will connect the second counter 16 corresponding to the tool according to the program, and control the second counter 16 to work when the photoelectric switch 144 outputs an electrical signal. Since each tool corresponds to a second counter 16, each tool can be counted separately. By counting the tools separately, the accuracy of the inspection time reminder for each tool can be ensured. Secondly, when the control host 4 controls the cutter disc assembly 3 to temporarily stop turning (for example, changing the tool), the control host 4 will control the drive motor 13 to temporarily stop working to avoid excessive counting.

When the coolant flows back into the collecting tank 5, after the coolant falls on the separation net 221, the waste chips in the coolant will be trapped on the separation net 221, and the separated coolant will continue to flow through the baffle 222, and the coolant will contact each heat-conducting rod 202 and the aluminum alloy plate 201, so that heat can be exchanged to the heat-conducting rod 202 and the aluminum alloy plate 201. When the driving motor 13 is working, it can drive the impeller 203 to rotate. When the impeller 203 rotates, the impeller 203 generates thrust on the surrounding air. Due to the special shape and inclination angle of the impeller 203 (refer to the fan blades), during the rotation process, the air in front of the impeller 203 is compressed and the pressure increases, while the air pressure behind the impeller 203 decreases. A pressure difference is formed. Under the effect of the pressure difference, the air in the normal pressure area flows to the low pressure area, thereby forming a wind flow. When the wind flow flows to the heat conducting rod 202, the heat conducted by the heat conducting rod 202 can be exchanged. The heat after the heat exchange is discharged through the air outlet 204, so that the cooling liquid inside the collecting tank 5 can be assisted to cool down by dissipating the heat of the heat conducting rod 202. When the temperature of the cooling liquid is high, the resistance of the thermistor plate 104 is reduced. At this time, the current passed into the driving motor 13 becomes larger, so the driving motor 13 drives the impeller 203 to rotate faster, thereby making the flow speed of the wind flow faster, and then the heat dissipation speed of the heat conducting rod 202 can be increased to meet the heat dissipation demand of the high-temperature reflux cooling liquid.

At the same time, when the temperature of the refluxed coolant is high, since the temperature of the thermistor plate 104 is low, at this time, the current passed by the control host 4 to the circulation pump 211 will also increase. At this time, the output power of the circulation pump 211 will also increase, so the circulation pump 211 outputs more coolant in the same time. At this time, the pressure of the coolant entering the hollow plate 216 increases, so the valve plates of the two pressure valves 218 will be opened. At this time, the range of the coolant sprayed through the hollow plate 216 becomes larger. Therefore, when the reflux temperature of the coolant is high, by increasing the output coolant amount and the coverage range of the coolant, the cooling speed of the sheet metal and the tool can be increased, and the possibility of excessive temperature increase of the sheet metal and deformation of the sheet metal can be avoided as much as possible.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. The utility model provides a numerical control machine tool for sheet metal part turning, includes lathe main part (1), chuck subassembly (2), blade disc subassembly (3) and control host computer (4), its characterized in that, chuck subassembly (2) are installed at the main shaft output of lathe main part (1), blade disc subassembly (3) are installed at the output of feed shaft, control host computer (4) are installed at the lateral wall of lathe main part (1), collecting vat (5) have been seted up to the inside of lathe main part (1), and the notch department of collecting vat (5) is slided and is equipped with and connect hopper (6), connect side wall and blade disc subassembly (3) of hopper (6) install coupling assembling (7) jointly, connect the lower extreme fixed grafting of hopper (6) to have square tube (8), light detection mechanism (9) are installed to the lateral wall of square tube (8), temperature detection mechanism (10) are installed to the discharge gate of square tube (8), mounting groove (11) have lateral wall fixed mounting has two curb plates (12) in the lateral wall of mounting groove (11), and two motor (12) are connected with light detection mechanism (13) and electric property detection mechanism (13) through the fixed joint of side wall (13), the automatic cooling device is characterized in that the output end of the driving motor (13) and one side plate (12) are jointly provided with a photoelectric triggering mechanism (14), one side plate (12) is provided with a first counter (15) on the side wall, the other side plate (12) is provided with a plurality of second counters (16), each second counter (16) corresponds to each cutter on the cutterhead assembly (3) respectively, the side wall of the machine tool main body (1) is fixedly provided with a first buzzer (17) and a second buzzer (18), the first counter (15) is electrically connected with the first buzzer (17) through the control host (4), each second counter (16) is electrically connected with the second buzzer (18) through the control host (4), a heat dissipation groove (19) communicated with the mounting groove (11) is formed in the machine tool main body (1), the driving motor (13) and the heat dissipation groove (19) are jointly provided with heat dissipation mechanisms (20), the side wall of the machine tool main body (1) is provided with a cooling mechanism (21) communicated with the collecting groove (5), and the collecting mechanism (22) is circularly arranged in the machine tool main body (1).

2. The numerical control machine for turning sheet metal parts according to claim 1, wherein the connecting assembly (7) comprises a connecting plate (71) fixedly mounted on the outer side wall of the receiving hopper (6), a strip-shaped hole (72) is formed in the end face of the connecting plate (71), a moving column (73) is inserted into the strip-shaped hole (72) in a sliding manner, and the moving column (73) is fixed at the bottom of the shell of the cutter head assembly (3).

3. The numerical control machine tool for turning sheet metal parts according to claim 1, wherein the light detection mechanism (9) comprises fixing grooves (91) formed in two opposite inner walls of the square tube (8), a lamp panel (92) is fixedly arranged at the bottom of one fixing groove (91), a photodiode component (93) is fixedly arranged in the other fixing groove (91), transparent plates (94) are fixedly packaged at the notches of the two fixing grooves (91), the lamp panel (92) is electrically connected with the control host (4), a resistance adjusting component (95) is fixedly arranged at the bottom of the heat dissipation groove (19), and the photodiode component (93) is electrically connected with the driving motor (13) through the resistance adjusting component (95) and the control host (4).

4. A numerical control machine tool for turning sheet metal parts according to claim 3, characterized in that the temperature detection mechanism (10) comprises a supporting plate (101) arranged below the square tube (8), a groove (102) is formed in the end face of the supporting plate (101), an insulating heat conducting plate (103) is fixedly arranged at the notch of the groove (102), a thermistor plate (104) is fixedly arranged at the lower end of the insulating heat conducting plate (103), and the thermistor plate (104) is connected in series in a connecting loop of the photodiode assembly (93), the resistance regulating assembly (95), the control host machine (4) and the driving motor (13), and a plurality of elastic supporting assemblies (105) are jointly arranged on the supporting plate (101) and the outer side wall of the square tube (8).

5. The numerical control machine for turning sheet metal parts according to claim 4, characterized in that the photoelectric triggering mechanism (14) comprises an insulating rotary table (141) fixedly sleeved outside an output end of the driving motor (13), a light emitting lamp (142) is fixedly installed at an eccentric position of a side wall of the insulating rotary table (141) close to one side of the side plate (12), a circular groove (143) corresponding to the position of the light emitting lamp (142) is formed in one side wall of the side plate (12), a photoelectric switch (144) is fixedly installed in the inside of the circular groove (143), light emitted by the light emitting lamp (142) irradiates a photosensitive end of the photoelectric switch (144), a rotary conducting ring (145) is fixedly sleeved on an outer side wall of the insulating rotary conducting ring (141), an insulating supporting frame (146) is fixedly installed on one side wall of the side plate (12), a conducting head (147) is fixedly installed at an end portion of the insulating supporting frame (146), the end portion of the conducting head (147) is in contact with the outer side wall of the rotary conducting ring (145), and the control host (4) is electrically connected with a second counter (16) through the conducting head (147) and the rotary conducting ring (145) through the second counter (16).

6. The numerical control machine tool for turning sheet metal parts according to claim 1, wherein the heat dissipation mechanism (20) comprises an aluminum alloy plate (201) fixedly inserted into the bottom of the heat dissipation groove (19), the aluminum alloy plate (201) penetrates through the groove wall of the collecting groove (5), a plurality of heat conducting rods (202) are fixedly inserted into the side wall of the aluminum alloy plate (201), an impeller (203) is fixedly arranged at the output end of the driving motor (13), and an air outlet hole (204) is formed in the upper groove wall of the heat dissipation groove (19).

7. The numerical control machine tool for turning sheet metal parts according to claim 4, wherein the circulating cooling mechanism (21) comprises a circulating pump (211) fixedly installed at the lower end of the outer side wall of the machine tool body (1), the suction end of the circulating pump (211) is communicated with the inside of the collecting tank (5), an output pipe (212) is fixedly installed at the output end of the circulating pump (211), a connecting hose (213) is fixedly communicated with the pipe end of the output pipe (212), a fixed plate (214) is fixedly installed at the upper end of the shell of the cutterhead assembly (3), a movable pipe (215) is fixedly installed on the side wall of the fixed plate (214), the movable pipe (215) is communicated with the connecting hose (213), the liquid outlet end of the movable pipe (215) is fixedly communicated with a hollow plate (216), three round holes (217) are formed in the lower end of the hollow plate (216), pressure valves (218) are arranged in the two round holes (217), and the thermosensitive resistor plate (104) is electrically connected with the circulating pump (211) through a control host machine (4).

8. The numerical control machine for turning sheet metal parts according to claim 7, wherein the separation guide mechanism (22) comprises a separation net (221) arranged on the upper side of a notch of the collecting tank (5), a baffle plate (222) is arranged below the separation net (221), the baffle plate (222) is fixed in the collecting tank (5), and the baffle plate (222) is arranged above the suction end of the circulating pump (211).

9. The numerical control machine tool for turning sheet metal parts according to claim 4, wherein the resistance adjusting component (95) comprises an electromagnetic push rod (23) fixedly installed inside a heat radiating groove (19), an insulating movable block (24) is fixedly installed at the output end of the electromagnetic push rod (23), a sliding conducting ring (25) is fixedly inserted into the side wall of the insulating movable block (24), a connecting block (26) is fixedly installed on the groove wall of the heat radiating groove (19), a resistor rod (27) is fixedly installed on the side wall of the connecting block (26), the sliding conducting ring (25) is in sliding contact with the resistor rod (27), the photodiode component (93) is electrically connected with the electromagnetic push rod (23) through a control host machine (4), and the sliding conducting ring (25) and the resistor rod (27) are connected with a driving motor (13) and a thermosensitive resistor plate (104) in series through the control host machine (4).