CN211540418U - Flushing unit for quick tool change of processing machines - Google Patents

Abstract

The utility model discloses a flushing device used for quick tool change of a processing machine, comprising: a water pump, a first one-way valve, a second one-way valve, a first controllable valve, a second controllable valve and a spray nozzle, the water pump Simultaneously with the closing of the first controllable valve, the first one-way valve is automatically closed so that the flushing liquid in the pipeline between the first controllable valve and the first one-way valve is locked. Two parallel pipelines consisting of a controllable valve and a one-way valve are used to communicate with the nozzle, so that when the water pump stops working, the flushing fluid in the pipeline connected to it can be locked immediately, ensuring that the machining spindle can obtain the first time of cutting. The flushing liquid is infiltrated; the air flow sprays the residue in the spray nozzle so that the spray nozzle will not drip intermittently, and will not affect the locked flushing liquid in the pipeline connected to the water pump.

Description

Flushing unit for quick tool change of processing machines

technical field

The utility model relates to the technical field of numerical control machine tool processing, in particular to a flushing device used for rapid tool change of a processing machine.

Background technique

Nowadays, multi-spindle machining has become a trend in the field of batch machining, and its automatic tool change technology is affected by the spatial structure, and there are still many problems, especially the parallel machining spindle layout brings about flushing fluid (ie cutting fluid) during tool change. ) start and stop, the start and stop of the machining spindle, the travel path of the machining spindle, etc.

From the perspective of machine tool users, it is hoped that the machine tool has the shortest possible downtime auxiliary time, especially the machining spindle needs to replace the cutter head more frequently. The time required for the rotation speed (the machining spindle stops from the high-speed machining speed and then resumes to the machining speed), the chip-to-chip (the last chip of the previous piece of material is cut to the start of the next piece of material), and the ideal chip-to-chip time, not only need to deal with The rhythm of the tool change mechanism and the travel path of the machining spindle should be well handled, and other issues such as the start and stop of the machining spindle and the start and stop of the flushing fluid should be handled well.

At present, the mainstream processing machine tools still generally use flushing liquid for working cooling. The flushing liquid is usually placed in a box container, and a water pump is set on the box body. Out, cooling, lubricating and chipping of workpieces and machining tools.

When the machine tool stops processing, the water pump stops working, and the flushing fluid injection also stops. However, one end of the liquid in the pipeline continues to flow out from the nozzle in a linear shape, and then dropwise until the flushing liquid in one end of the pipeline flows cleanly; the flushing liquid in the other end of the pipeline flows back from the pump body to the cooling tank.

When the machine tool starts processing the next time, the water pump is started, and the pipeline is filled with flushing fluid, and then the flushing fluid is sprayed out from the nozzle of one end of the pipeline to the workpiece and the tool on the machining spindle.

It can be seen from the above process that when the pump is working, there is a certain time lag between the start of the pump and the spraying of the flushing fluid from the nozzle. Because the flushing fluid in the pipeline was backflowed from both ends and the flushing fluid was sprayed from the nozzle last time, there is a certain time lag, and even sometimes The processing spindle starts processing, and the flushing fluid has not been ejected, which affects the normal processing. On the other hand, when the water pump is stopped, one end of the jet continues to flow out the flushing liquid in lines or droplets, which not only affects the replacement of the workpiece, but also interferes with the smooth progress of the machining spindle to replace the cutter head, and the lines or droplets of the flushing fluid are easy to flow or splash. onto the handle of the knife.

In particular, based on the patent application document published by the applicant with the publication number of CN 109465664 A, this multi-spindle side-by-side layout requires the machining spindle to traverse during tool change, and the lines or droplets of coolant will flow to the tool handle assembly on the manipulator during the traverse movement. surface, which in turn affects the tool change.

The patent document with the publication number of CN 109262362 A discloses "an emergency stop device for cooling fluid in a machining center" by using a first one-way valve to stop cutting fluid (flushing fluid), and using air pressure to destroy residual pressure to avoid spraying one end. Lines or dots. However, in practice, adding a one-way valve in the cutting fluid pipeline, on the one hand, the existence of fine cutting in the cutting fluid is easy to block the one-way valve position, resulting in the failure of the one-way valve; on the other hand, when the cutting fluid is working, there are The phenomenon of "water hammer" (in the pressure pipeline, due to some external reasons (such as the sudden closing of the valve, the sudden stop of the pump unit) causes the water flow rate to change suddenly, thereby causing water hammer. This hydraulic phenomenon is called water hammer. or water hammer.), a one-way valve with a smaller threshold, after the pump stops, the coolant (flushing fluid) in the pipeline will continue to flow out for a long time. And a larger one-way threshold will have a certain resistance to the cutting fluid in the pipeline, which will affect the normal injection pressure. In addition, when the residual pressure is destroyed by the compressed air, the spindle is generally stopped, and the coolant will be sprayed on the spindle tool holder or tool. On the one hand, the chips in the coolant may remain on the tool holder or tool, interfering with the normal tool change. On the other hand, the coolant remains on the tool holder or the tool and continues to drip, especially when the tool holder on the spindle is replaced into the tool magazine, the residual coolant on it enters the tool magazine and continues to drip, contaminating the tool magazine.

Therefore, how to effectively avoid the spray lag when the cutting fluid starts, the line or drop delay when the cutting fluid is stopped, and how to avoid the coolant spray remaining on the tool holder or tool when the residual pressure is destroyed are the problems that need to be solved for efficient tool change.

Utility model content

The utility model provides a flushing device for rapid tool change of a processing machine to solve the above problems.

The utility model provides a flushing device for rapid tool change of a processing machine, comprising: a water pump, a first check valve, a second check valve, a first controllable valve, a second controllable valve and a spray nozzle, the water pump The pump, the first check valve, the first controllable valve and the spray nozzle are connected in sequence through the pipeline, and the external compressed air can be communicated with the entrance of the spray nozzle through the second controllable valve and the second check valve; the water pump Simultaneously with the closing of the first controllable valve, the first one-way valve is automatically closed so that the flushing liquid in the pipeline between the first controllable valve and the first one-way valve is locked.

Preferably, an overflow valve is provided at the outlet of the water pump.

Preferably, the opening mode of the second controllable valve is pulsed opening and closing, so that the air flow of the external compressed air to the injection nozzle through the second controllable valve and the second one-way valve is pulsed air pressure.

Preferably, the second controllable valve is a two-way electronically controlled valve.

Preferably, the first check valve is a paddle check valve, and the first controllable valve is an angle seat valve.

Preferably, the first controllable valve and the second controllable valve are integrated into a three-position, five-way electric control valve.

It can be seen from the above technical solution that the utility model adopts two parallel pipelines consisting of a controllable valve and a one-way valve to communicate with the nozzle, so that the pipeline connected to it can be locked immediately when the water pump stops working (also called a pipeline) It is the flushing liquid in the pipeline), so that when the water pump is started next time, the flushing liquid locked in the pipeline can be quickly sprayed out of the nozzle, ensuring that the machining spindle is infiltrated by the flushing liquid at the first time of cutting; at the same time, when the water pump stops After that, the pipeline connected to the external compressed air is released and opened, and the air flow sprays the residue in the nozzle, so that the nozzle will not drip intermittently, and it will not affect the pipeline connected to the water pump. Locked flush. In particular, when the second controllable valve adopts the pulse-type opening and closing control, a pulse-type air pressure can be formed in the pipeline to perform more efficient and clean cleaning in the spray nozzle.

Description of drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are just some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

1 is a schematic diagram of the principle of the flushing device in Embodiment 1 of the present invention;

FIG. 2 is a schematic diagram of the flow path of the quick tool changing method when the processing machine is applied to the flushing device in the second embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Example 1:

An embodiment of the present invention provides a flushing unit for a tool changing mechanism of a processing machine, as shown in FIG. 1 , comprising: a water pump 2 , a first check valve 3 , a second check valve 10 , and a first controllable valve 6 , the second controllable valve 8 and the nozzle 9, wherein the first one-way valve 3 adopts a paddle check valve, and the paddle check valve has strict restrictions on the installation method, which can be suitable for vertical installation or partial installation at the pump outlet. Horizontal installation under conditions. The first controllable valve 6 adopts an angle seat valve, and the second controllable valve 8 adopts a two-way electric control valve. In actual production applications, a liquid storage tank 1 needs to be set up. The liquid storage tank 1 stores flushing liquid, and the flushing liquid can be As a coolant during machining, it can also be used as a cleaning fluid for machining waste, and can also be used as a lubricating fluid for the tool head. Generally, the water pump 2 is installed in the liquid storage tank 1, and the water pump is used to absorb the flushing fluid. A one-way valve 3, the first controllable valve 6 and the injection nozzle 9 are connected in sequence through pipes, and the external compressed air can be communicated with the inlet of the injection nozzle 9 through the second controllable valve 8 and the second one-way valve 10; A controllable valve 6 is closed at the same time, and the first one-way valve 3 is automatically closed, so that the flushing liquid in the pipeline 5 between the first controllable valve 6 and the first one-way valve 3 is locked, and the so-called locked refers to the flow of the flushing liquid The fluid is frozen (not causing freezing) and cannot flow, and the flushing liquid basically fills the section of pipeline 5; after the flushing fluid in the pipeline 5 between the first controllable valve 6 and the first one-way valve 3 is locked, the second controllable The valve 8 is opened to allow the external compressed air to pass through the second controllable valve 8 and the second one-way valve 10 to remove the residues in the spray nozzle 9, the residues include residual flushing liquid or contaminated waste and the like.

After the water pump is stopped, the flushing liquid in the pipeline 5 is locked, and will not flow back into the water pump, nor will the spray nozzle be left forward, so that the pipeline is in a state full of flushing liquid. Once the pump is started again and the pipeline is released, the The flushing liquid in the pipeline will be rushed to the nozzle for the first time, so that the processing position of the machining spindle can be infiltrated by the flushing liquid in the shortest time. Since the pipeline is filled with flushing liquid, the pressure from the water pump acts on the flushing liquid in the pipeline at the moment of opening, which further relieves the instantaneous pressure of the water pump, thereby effectively alleviating the water hammer phenomenon. . The setting of the other air pressure pipeline can blow out the residual liquid of the nozzle on the one hand, and can also prevent the liquid dripping at the outlet of the first controllable valve. A controllable valve outlet, thereby ensuring that there is no dripping phenomenon at the outlet of the first controllable valve.

In order to completely eliminate the water hammer phenomenon, an overflow valve 4 is set at the outlet of the water pump 2 in this embodiment, and the other end of the overflow valve 4 is connected to the liquid storage tank, so that once the water pressure in the pipeline is too high, the flushing liquid can Return to the liquid storage tank 1 through the overflow valve 4 . The overflow valve on the pump side is mainly used to stabilize the pressure, especially to deal with the water hammer phenomenon when the pump starts and stops.

In this embodiment, in order to ensure that the spray nozzle does not appear in the state of flushing liquid droplets, another pipeline is set to communicate with the external compressed air, and the opening and closing of the pipeline is controlled by a second controllable valve, in order to further ensure that the liquid at the spray nozzle can be efficiently , Clean cleaning, the opening mode of the second controllable valve is pulsed opening and closing, so that the air flow of the external compressed air to the spray nozzle through the second controllable valve and the second one-way valve is pulsed air pressure. The one-way valve on one side of the two-way electric control valve is mainly used to prevent the flushing liquid from flowing backward into the valve body of the two-way electric control valve. If continuous air blowing is used, it is not conducive to the collection of residual nights. However, the utility model found through experiments that the use of pulsed air pressure makes the residual liquid blown by air pressure, and it can quickly gather at a certain point at the moment when the air pressure is interrupted to form tiny water droplets. The re-started air pressure will blow away the re-collected small water droplets at one time, and the nozzle will become very clean in an instant, and this pulsed control method can also save energy to the greatest extent.

In this embodiment, a paddle-type check valve is set at one end of the outlet of the flushing liquid pump to limit the backflow of the flushing liquid in the pipeline to the storage tank when the pump is closed and stopped; an angle seat valve is set at one end of the spray nozzle, and the angle seat valve is One end of the controlled spray nozzle is also connected to a two-way electric control valve, which can introduce external compressed air. Among them, the angle seat valve is used to close the spray when the water pump stops, and the two-way electric control valve is used to connect the compressed air to destroy the flushing liquid in the spray nozzle. Residual pressure, compressed air is injected in a pulsed manner.

It can be understood that, in this embodiment, the first controllable valve adopts a two-way electric control valve, and the second controllable valve adopts an angle seat valve, which can achieve the best control effect. In other embodiments, it can be selected according to different needs. Selecting the control valve, for example, the first controllable valve and the second controllable valve are integrated into the one-three-five-way electric control valve, and the effect of controlling the pipelines separately can still be achieved.

Example 2:

This embodiment provides a quick tool change method for a processing machine, which can be implemented based on the flushing unit in the above-mentioned Embodiment 1, and other key components in the processing machine can be known from the prior art, such as the processing spindle The drive and structure, and the drive and structure of the tool magazine will not be repeated here.

The quick tool change method for a processing machine provided in this embodiment includes four key steps.

1. Preparation steps for tool change.

In this step, the previous machining process has been completed, and the cutter head needs to be replaced to process the workpiece in the next process. In the previous processing method, the processing spindle can be controlled to stop rotating, but in this step of the present invention, the processing spindle is still controlled to continue to rotate after the processing is completed, but the water pump is controlled to close, the first controllable valve is closed, and the first one-way valve is closed. The valve is automatically closed, and the water pump and the first controllable valve are closed at the same time. The simultaneous closing here is ideally closed at the same time, but errors are allowed and inevitable in actual operation. The water pump and the first controllable valve are closed at the same time. Only when the controllable valve is closed at the same time can ensure that the pipeline 5 is filled with flushing liquid to the greatest extent, the flushing liquid is locked in the pipeline 5, and it can also ensure that as little residual liquid is left in the pipeline as possible. The second controllable valve is in a normally closed state. The continuous rotation of the machining spindle can ensure that the residual liquid on the tool head of the machining spindle is thrown off, reducing pollution.

2. Air blow cleaning step.

After the flushing liquid in the pipe 5 is locked, the main task of this step is to clean up the residues in the spray nozzle to prevent the spray nozzle from dripping, causing the dripping liquid to affect the processing on the tool head when changing the tool, and it can also be cleaned along the way. Residues that may remain on the cutter head, kill two birds with one stone. After the water pump and the first controllable valve are closed, this step starts to control the second controllable valve to open, so that the external compressed air passes through the second controllable valve and the second one-way valve to remove the residue in the spray nozzle, and the main shaft keeps rotating so that the injection is carried out on the processing main shaft. The residue was thrown off.

In order to further ensure the blowing and cleaning effect of the spray nozzle, the mode of controlling the opening of the second controllable valve is pulse opening and closing, so that the air flow of the external compressed air to the spray nozzle through the second controllable valve and the second one-way valve is a pulse. air pressure. The pulse frequency and cycle of pulse blowing can be programmed or parameterized by the system.

For the blowing time of the jet nozzle, it can be set according to the actual needs, and the corresponding blowing setting time can be set in the program. As a more efficient embodiment, the moving process of the machining spindle can be simultaneously performed when the air blowing cleaning step is performed. At this time, there are both the air blowing step and the step of moving the machining spindle upward to the set safety height in the process.

3. Steps to replace the cutter head.

After the jet nozzle is cleaned, in this step, the machining spindle is controlled to stop rotating and move to the set tool change position. The so-called tool change position refers to the position where the machining spindle and the tool change manipulator are handed over, which is an area position, including on the tool change manipulator. The location of the old tool head and the location of the new tool head, the tool change manipulator removes the old tool head on the machining spindle and replaces it with a new one, and returns it to the tool magazine, the machining spindle returns to the machining position, and the machining position is also a regional position. When moving the worktable, it will enter the processing position and cooperate with the processing spindle for processing. The tool changing manipulator can be a general tool changing manipulator, which removes the tool head on the machining spindle and replaces it with a new one. The tool magazine structure and the related tool changing manipulator disclosed in the patent document No. It can be applied in the embodiments of the present invention.

In the embodiment of the present utility model, in order to further reduce the tool change time, an optimal moving path scheme of the machining spindle is set, the second controllable valve is controlled to open, and the air blowing starts to clean, and at the same time, the machining spindle keeps rotating and moves to the tool changing position. During the process of the machining spindle moving to the tool change position, the tool change manipulator carries the new tool head from the tool magazine to move to the tool change position. This is obviously a simultaneous step of the blowing cleaning step and the step of replacing the tool head, and the efficiency is greatly improved. The moving method of the machining spindle has also been improved to ensure the safety and reliability of the tool change. The machining spindle moves to the tool changing position by first rising to the set safety height and then moving downward. Before the machining spindle moves downward, control the The second controllable valve is normally closed to complete the air blowing cleaning step and control the machining spindle to stop rotating. In short, when the machining spindle is lowered from the safety height, the air blowing and the spindle rotation must be stopped to ensure safety.

For the case where there is a controllable isolation door between the tool change position and the tool magazine, after the second controllable valve is controlled to be normally closed to complete the blowing cleaning step, the isolation door is opened, and the tool changing manipulator carries the new tool head to the The tool change position can ensure that air blowing or liquid spray will not affect the tool head in the tool magazine and the tool head on the tool change manipulator; the tool change manipulator carries the old tool head back to the tool magazine and the isolation door is closed. Start the quick spray procedure. The above completely guarantees the isolation of the tool magazine and effectively prevents the influence of pollution sources in the processing area on the tool magazine.

After controlling the machining spindle to stop rotating, the tool changing manipulator carries the new tool head from the tool magazine to the tool changing position under the machining spindle, and the machining spindle is lowered from the preset safety height so that the empty tool holder on the tool changing manipulator clamps the old tool of the machining spindle. Then the machining spindle moves to the new tool head position of the tool changer manipulator by jumping in a set parabolic trajectory, so that the new tool head is installed on the machining spindle, the machining spindle moves to a safe height, and the tool changer manipulator returns to the tool magazine. The jumping movement of the parabolic trajectory of the machining spindle is similar to the leapfrog movement, so it is also called the leapfrog movement, which is to control the driving speed ratio of the lateral movement and the vertical movement of the processing spindle at the same time, so as to obtain the actual running trajectory as a parabolic trajectory, such as shown in Figure 2.

In actual operation, the air blow cleaning step and the cutter head replacement step are a tight process with overlapping and coordination in time sequence. When the air blow cleaning step and the cutter head replacement step are performed, the second controllable valve is controlled to open, while the machining spindle keeps rotating. Move to the preset safe height, when the opening time of the second controllable valve reaches the set time, control the second controllable valve to normally close to complete the blowing cleaning step and control the machining spindle to stop rotating, and the tool changing manipulator is moved from the tool magazine. Carry the new tool tip to the tool change position below the machining spindle and complete the tool tip replacement procedure. That is, when the air blowing cleaning step is in progress, the tool changing manipulator in the tool magazine is already preparing for the new tool head. When the air blowing cleaning is completed, the tool changing manipulator can immediately move to the tool changing position to ensure the height of the tool change. efficiency.

In order to ensure that the air blowing cleaning time can be satisfied and the tool change can be more reasonably matched, when the machining spindle moves to the preset safety height, if the machining spindle reaches the preset safety height, the opening time of the second controllable valve reaches the set value. time, control the second controllable valve to normally close to complete the blowing cleaning step and control the machining spindle to stop rotating; if the opening time of the second controllable valve does not reach the set time after the machining spindle reaches the preset safety height, control the first controllable valve The second controllable valve continues to open and the machining spindle continues to rotate until the opening time of the second controllable valve reaches the set time, control the second controllable valve to normally close to complete the blowing cleaning step and control the machining spindle to stop rotating.

4. Quick spray steps.

After the cutter head is replaced, in this step, the water pump is controlled to start, the first controllable valve is opened to make the flushing liquid spray out from the spray nozzle at high pressure, and the processing spindle starts processing. When the tool head needs to be replaced after the current process is finished, return to the tool change preparation step.

Taking the tool magazine structure and the involved tool changing manipulator disclosed in the patent document No. CN 109465664 A as an example, a typical flow in this embodiment is completely introduced in conjunction with FIG. 2 as follows.

Taking A as the starting point, the machining program is completed, the tool change command starts, the machining spindle continues to rotate, the water pump is controlled to close, and the angle seat valve is controlled to close, and then the paddle check valve on the water pump side is automatically closed. The flushing fluid in the pipeline from the valve to the angle seat valve is frozen in fluidity (fluidity freezing, not causing freezing).

Then, the two-way electronically controlled valve that controls the compressed air opens and closes in a pulsed manner, and the timing starts. The pulsed compressed air enters the inner cavity of the nozzle through the two-way electronically controlled valve, and is ejected from the nozzle, and the residual pressure of the flushing liquid in the nozzle Remove, the residual flushing fluid is sprayed out.

At this time, the machining spindle continues to rotate, and the spindle slide, which is a part of the drive mechanism, moves to a predetermined safety height at full speed to ensure that the tool changing manipulator has room for movement during tool changing, and the tool head is not touched, as shown at point B in Figure 2.

The control system selects the optimal path for the machining spindle, and the spindle slide moves to the top of the tool change displacement point (ie, the tool change position) at full speed (predetermined safe height position), the pulse residual pressure removal continues, and the machining spindle rotates. During this process, if the set working time of pulse type residual pressure removal is reached, the two-way electric cavity valve will be closed, the pulse type residual pressure removal will stop, and then the rotation of the machining spindle will be stopped. If the set working time is not reached, the residual pressure will continue to be cleared, and the machining spindle will continue to rotate, as shown in Section C in Figure 2.

When the spindle slide reaches above the tool change point, if the pulse blowing set time is reached, the two-way electric control valve will be closed, the pulsed residual pressure removal will stop, and then the machining spindle will stop rotating, as shown at point D in Figure 2; If the pulse blowing set time is not reached, the two-way electric control valve continues to open and close, the pulse-type residual pressure removal continues, and the machining spindle continues to rotate until the set time is reached. After the cleaning is completed, the machining spindle moves down to the tool change point at full speed. At this time, the machining spindle and cleaning residues (cleaning residues) must be stopped, as shown in Section E in Figure 2.

In the above process or the machining process of the machine tool, the tool magazine and the tool change manipulator are in another coroutine (cooperative program), and the tool change manipulator completes the tool preparation or retrieval in the tool magazine to prepare for the tool change, as shown in Figure 2 G part.

After the pulse-type residual pressure is cleared, the spindle slide moves down to the tool change point at full speed, and the tool magazine door is opened at the same time.

The spindle slide has reached the tool change point, and the tool change manipulator moves to the tool change point at full speed.

The system detects that the machining spindle is completely stopped, one of the jaws of the tool changing manipulator clamps the tool shank on the machining spindle, and the spindle slide carries the machining spindle to jump at full speed, so that the old tool head on the machining spindle is pulled out, and the machining spindle is completed. Unload the tool, as shown at point F in Figure 2; as the machining spindle leaps to the position of the new tool head held by the other gripper of the tool-changing manipulator, the new tool on the other gripper of the tool-changing manipulator is loaded into the processing spindle. The tool holder and the clamping jaws are released, and the machining spindle completes the tool change, as shown at point I in Figure 2. The H segment between point F and point I is a parabolic trajectory, that is, a leapfrog trajectory.

After the system detects the release signal of the other gripper, the spindle rotates and opens, and at the same time, the spindle slide drives the spindle to move up to a safe height at full speed, and the tool changing manipulator moves to the bottom of the tool magazine at full speed, and then the tool magazine door opens and closes to isolate the tool. head, as shown in Figure 2, segment J.

After the system detects that the tool magazine door is closed, the water pump is started, and at the same time, the angle seat valve is opened, and then, the flushing fluid is ejected from the nozzle at high pressure, as shown in Section K in Figure 2, the spindle slide carries the machining spindle and moves to the top of the machining point at full speed.

After the system detects that the speed of the machining spindle reaches the set speed, the spindle slide carries the machining spindle and moves down to the machining point, as shown in section L in Figure 2. After reaching the set machining point, the machining spindle starts to process, as shown in M in Figure 2. point. The trajectory diagram in Figure 2 is only used to help readers understand, and the trajectory diagram in actual operation may not be completely consistent.

During the above tool changing process, the machining spindle rotates until the pulsed residual pressure is removed, and then stops. The purpose is that when the pulsed residual pressure is removed, when the residual flushing liquid is sprayed on the tool holder or tool, the machining spindle can be effectively thrown off by the rotation of the machining spindle. Residual flushing fluid to keep the handle or tool clean and prevent contamination of the manipulator and tool magazine during tool change.

It can be seen from the above description that during the process of tool change, the pulse-type residual pressure removal of the flushing fluid is carried out synchronously, and the manipulator prepares the tool at the tool magazine side, and multiple coroutines or multiple tasks are performed at the same time, which makes the tool change time shorter. .

Pulse-type residual pressure removal not only cleans the residual liquid in the nozzle more thoroughly, but also saves energy. It is further combined with the rotation start and stop of the spindle to make the spindle tool holder or tool cleaner, and the assembly precision is higher when changing tools. Reduced pollution to manipulators and tool magazines. The embodiment of the utility model achieves multiple technical effects: selecting the nearest path to reach the target point, and adopting a special leapfrog curve in the process of changing the tool, so as to facilitate better acceleration and deceleration performance. Pulse-type residual pressure destruction, the machining spindle rotates and throws off the remaining coolant, multiple coroutines act at the same time, better timing, and compact time dynamism. The path is shorter and the timing is more compact, which effectively eliminates interference factors, making tool change more efficient and more accurate.

The fast method provided by the embodiment of the present utility model solves: 1. Quickly and accurately turn on and off the cooling liquid, and control the line or dripping phenomenon at the spray end of the cooling liquid; 2. Control the residual pressure of the tool holder on the spindle when the residual pressure is destroyed 3. Shorter tool change travel path; 4. More reasonable tool change sequence; 5. Overall shorter tool change time and better tool change accuracy.

The flushing device for quick tool change of a processing machine provided by the embodiment of the present invention has been described above in detail. In this paper, specific examples are used to illustrate the principle and implementation of the present invention. The description of the above embodiments It is only used to help understand the core idea of the present utility model; at the same time, for those skilled in the art, according to the idea and method of the present utility model, there will be changes in the specific implementation and application scope. , the content of this specification should not be construed as a limitation to the present invention.

Claims (6)

1. A flushing device for quick tool change of a processing machine, characterized in that it comprises: a water pump, a first check valve, a second check valve, a first controllable valve, a second controllable valve and a spray nozzle, the In order to absorb the flushing liquid, the water pump, the first one-way valve, the first controllable valve and the spray nozzle are connected in sequence through the pipeline, and the external compressed air can be communicated with the spray nozzle inlet through the second controllable valve and the second one-way valve; The first controllable valve is closed at the same time, and the first one-way valve is automatically closed, so that the flushing liquid in the pipeline between the first controllable valve and the first one-way valve is locked. 2 . The flushing device for quick tool change of a processing machine according to claim 1 , wherein an overflow valve is arranged at the outlet of the water pump. 3 . 3. The flushing device for quick tool change of a processing machine according to claim 1 or 2, wherein the opening mode of the second controllable valve is pulsed opening and closing so that the external compressed air passes through the second controllable valve and The air flow blown by the second one-way valve to the spray nozzle is a pulsed air pressure. 4 . The flushing device for quick tool change of a processing machine according to claim 3 , wherein the second controllable valve is a two-way electric control valve. 5 . 5 . The flushing device for quick tool change of a processing machine according to claim 1 or 2 , wherein the first check valve adopts a paddle check valve, and the first controllable valve adopts an angle seat valve. 6 . 6 . The flushing device for quick tool change of a processing machine according to claim 1 or 2 , wherein the first controllable valve and the second controllable valve are integrated into a three-position five-way electric control valve. 7 .

Images