CN216802734U

CN216802734U - Clamping detection device for milling machine

Info

Publication number: CN216802734U
Application number: CN202123385614.0U
Authority: CN
Inventors: 周道恒; 陈昌飞; 余飞; 秦海泉
Original assignee: Neway Cnc Equipment Suzhou Co ltd
Current assignee: Neway Cnc Equipment Suzhou Co ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-06-24
Anticipated expiration: 2031-12-29

Abstract

The utility model provides a clamping detection device for a milling machine, which comprises a clamping device, a hydraulic driver communicated with the clamping device through a pipeline, and a flow detection device arranged on the pipeline and used for detecting the flow of hydraulic oil pumped and extruded by the hydraulic driver. The hydraulic driver is used for pumping or extruding hydraulic oil to the clamping device to enable the clamping device to act. This scheme is through above-mentioned setting, changes detection device from the main shaft and establishes on oil feeding system, with the separation of lathe rotation axis, neither influences the function of each root axis of lathe, sets up rationally, also can accurately detect clamping device's clamping action simultaneously and whether carry out and target in place.

Description

Clamping detection device for milling machine

Technical Field

The utility model belongs to the field of collecting pipelines, and particularly relates to a clamping detection device for a milling machine.

Background

In the existing numerical control tool machining, a detection switch on a milling head is very important, and the detection switch is mainly used for detecting whether a clamping action is already done in place or not and judging whether the next action can be continuously executed or not according to a signal. If the clamping action is not done in place, the next action is performed, which may damage the equipment and may lead to personal safety. Therefore, a stable and reliable switching signal is required on the milling head.

When the traditional detection switch is used for detecting whether the rotating shaft is clamped or not, the traditional detection switch is usually arranged on the rotating shaft for detection accuracy, so that the cable of the detection switch is required to be designed to be longer, the cable is easy to wind in the rotating process, the cable is scratched and rubbed in the rotating process, and even the cable is broken, and normal detection is influenced. Meanwhile, the cable can limit the rotation angle of the rotating shaft, so that the processing angle range is limited, and the adaptability is poor. Even if the mode that the cable was walked the line through the tow chain is adopted, receive the restriction of tow chain volume and bend radius, the cutter head excircle needs to be done greatly, has increased the volume of cutter head.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solve at least one of the problems of the prior art, and to provide a clamping detection device capable of accurately detecting a clamping force without limiting the normal operation of a rotating shaft.

The purpose of the utility model is realized by adopting the following technical scheme:

a clamping detection device for a milling machine, comprising:

a clamping device;

the hydraulic driver is communicated with the clamping device through a pipeline and is used for pumping or extruding hydraulic oil into or out of the clamping device so as to enable the clamping device to act;

and the flow detection device is arranged on the pipeline and used for detecting the flow of the hydraulic oil pumped and extruded by the hydraulic driver.

Further, the flow detection device is an oval gear flowmeter.

Further, still include the filter equipment who is used for filtering hydraulic oil, filter equipment set up respectively in be located on the pipeline the both ends of flow detection device.

Furthermore, the clamping device is provided with an oil cavity communicated with the pipeline, and further comprises a piston which is arranged in the oil cavity in a sliding manner and a clamping piece which is connected with the piston and moves along with the piston, wherein the piston divides the oil cavity into a clamping oil cavity and a loosening oil cavity which are respectively communicated with the pipeline.

Further, the clamping oil chamber and the unclamping oil chamber are filled with hydraulic oil in the same shape and volume.

And the reminding device is used for reminding workers, and acts according to the detection information of the flow detection device.

Further, the device also comprises a display device for displaying the detection information of the flow detection device.

Compared with the prior art, the utility model has the beneficial effects that:

when the clamping detection device for the milling machine is used, firstly, the hydraulic driver is communicated with an external hydraulic oil tank, then, the hydraulic driver is started, so that hydraulic oil is pumped into the clamping device along the pipeline to provide power for the clamping device or the hydraulic oil is squeezed back to the hydraulic oil tank along the pipeline, and finally, the flow detection device on the pipeline can detect the flow of the pumped or squeezed hydraulic oil and judge whether the clamping action of the clamping device is completed or not. This scheme is through above-mentioned setting, sets up detection device on oil feeding system, with the separation of lathe rotation axis, neither influences the function of each root axis of lathe, sets up rationally, also can accurately detect clamping device's clamping action simultaneously and whether carry out and target in place.

Drawings

FIG. 1 is a schematic view of a preferred embodiment of the clamping detection device for a milling machine of the present invention;

fig. 2 is a partial view of a cross-section of a preferred embodiment of the clamping device of the present invention.

Wherein, in the figures, the respective reference numerals:

10. a clamping device; 11. clamping the oil cavity; 12. loosening the oil cavity; 13. a piston; 14. a clamping member; 20. a hydraulic oil tank; 30. a flow detection device; 40. a controller; 50. a pipeline.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.

The utility model is shown in fig. 1, and comprises a clamping device 10, a hydraulic driver communicated with the clamping device 10 through a pipeline 50, and a flow detection device 30 arranged on the pipeline 50 and used for detecting the flow of hydraulic oil pumped and extruded by the hydraulic driver. The hydraulic drive is used for pumping or extruding hydraulic oil into or out of the clamping device 10 to enable the clamping device 10 to act. When the scheme is used, firstly, the hydraulic driver is communicated with the external hydraulic oil tank 20, then the hydraulic driver is started, so that hydraulic oil is pumped into the clamping device 10 along the pipeline 50 to provide power for the clamping device 10 or the hydraulic oil is squeezed back to the hydraulic oil tank 20 along the pipeline 50, and finally, the flow detection device 30 on the pipeline 50 can detect the flow of the pumped or squeezed hydraulic oil and judge whether the clamping action of the clamping device 10 is completed or not. Through the arrangement, the detection device is arranged on the oil supply system and is separated from the machine tool rotating shaft, so that the operation of each shaft of the machine tool is not influenced, the arrangement is reasonable, and whether the clamping action of the clamping device 10 is executed in place can be accurately detected.

As a preferred embodiment of the present invention, it may also have the following additional technical features:

the flow rate detecting device 30 in this embodiment is an oval gear flowmeter. The elliptic gear flowmeter is one of positive displacement flowmeters, is used for precisely and continuously or discontinuously measuring the flow rate or instantaneous flow rate of liquid in a pipeline 50, and is suitable for measuring the flow rate of high-viscosity media such as heavy oil, polyvinyl alcohol, resin and the like. With this arrangement, the oval gear flow meter is able to continuously divide the fluid into individual known volume portions using mechanical measuring elements and measure the total volume of the fluid based on the number of times the metering chamber is successively and repeatedly filled and drained of portions of the volume, the flow meter generating a pulse each time the oval gear is rotated to a certain position, which pulse is transmitted to the controller 40 via the signal cable. If the volume of the flowing oil is constant, the pulse fed back to the controller 40 each time is a relatively stable value (close to or equal to the set normal value), and if the pulse is less than the normal value, the controller 40 considers that the clamping action is not executed in place, and therefore the follow-up action of the machine tool is stopped, and safety accidents are avoided.

In the embodiment, the gaps between the two elliptic gears of the elliptic gear flowmeter and the inner wall of the flowmeter are processed by special leak-proof processing. Through this setting, the leakage of two oval gears at the rotatory in-process hydraulic oil of meshing that can be very big reduction makes accurate hydraulic oil volume carry to subsequent clamping device 10 from this, ensures that clamping action can accomplish and targets in place, also reduces the influence to flow detection device 30 detection accuracy.

The embodiment further includes a filtering device for filtering hydraulic oil, and the filtering device is respectively disposed on the pipeline 50 and located at two ends of the flow detection device 30. Through increasing filter equipment and combining foretell position setting, can make hydraulic oil all filter through filter equipment earlier before flowing through flow detection device 30, prevent that the impurity that smugglies secretly in the hydraulic oil from entering into the oval gear flowmeter, prevent to influence the accuracy that the oval gear flowmeter detected and avoid causing the loss to the oval gear flowmeter (impurity piles up the rotation that the back can influence the gear).

In the present embodiment, the clamping device 10 (see fig. 2) includes an oil chamber communicating with the conduit 50, a piston 13 slidably disposed in the oil chamber, and a clamping member 14 connected to the piston 13 and moving together with the piston 13, wherein the piston 13 divides the oil chamber into a clamping oil chamber 11 and a releasing oil chamber 12 respectively communicating with the conduit 50. Through the arrangement, when the hydraulic driver is started and hydraulic oil is pumped into the clamping device 10, the hydraulic oil enters the clamping oil cavity 11 at the moment, the piston 13 moves towards the other side along with the clamping oil cavity 11 filled with the hydraulic oil, and finally the clamping piece 14 moves to the clamping limit position along with the piston 13, and the clamping action is completed in place at the moment. Conversely, when the hydraulic driver is started and pushes the hydraulic oil back from the clamping device 10, the hydraulic oil enters the loosening oil cavity 12, the piston 13 moves to the other side along with the filling of the clamping oil cavity 11, and finally the clamping member 14 moves to the clamping limit position along with the piston 13, and the clamping action is completed. The clamping device 10 is simple in structure, can ensure accurate completion of clamping and loosening actions, and is high in working efficiency.

The specific structure of the combined machine tool in the embodiment is as follows: when the rotating shaft is loosened, the loosening oil cavity 12 is filled with oil, the piston 13 can drive the bearing seat, the adjusting pad, the rotating shaft shell and the lower fluted disc of the rotating shaft to move rightwards, the upper fluted disc and the lower fluted disc are disengaged, meanwhile, the fixed involute external spline fixed on the bearing sleeve can also move rightwards but cannot be disengaged from the involute internal spline, and the rotary involute external spline can be engaged with the involute internal spline. Until the piston 13 is blocked by the step on the inner sleeve, the rotating shaft is loosened in place, if the involute external spline is not meshed with the involute internal spline in the process of moving rightwards, the loosening is not in place, and the piston 13 cannot reach the step of the inner sleeve.

When the rotating shaft is clamped, the oil inlet of the rotating shaft clamping oil cavity 11 is formed, the piston 13 can drive the bearing seat, the adjusting pad, the rotating shaft shell and the rotating shaft lower fluted disc to move leftwards, the upper fluted disc and the lower fluted disc are meshed, meanwhile, the fixed involute external spline fixed on the bearing sleeve can also move leftwards and cannot be separated from the involute internal spline, and the rotary involute external spline can be separated from the involute internal spline. The limit position is determined by the engagement of the upper and lower toothed discs, and if the upper and lower toothed discs are not engaged but the tooth tips reach the tooth tips, the clamping is not in place.

The clamping oil chamber 11 and the unclamping oil chamber 12 are filled with the same shape and volume of hydraulic oil in this embodiment. By this arrangement it can be ensured that when both oil chambers are filled with hydraulic oil, the piston 13 is moved the same distance in both cases, and that the subsequent clamping and unclamping actions are performed in place.

The embodiment further comprises a reminding device for reminding workers, and the reminding device acts according to the detection information of the flow detection device 30. Through the arrangement of the reminding device, when the flow detection device 30 detects that the hydraulic oil passing through the pipeline 50 is lower than a normal value, the controller 40 can control the machine tool to stop the operation of the subsequent steps according to the information, and meanwhile, the controller 40 can also control the reminding device to start and inform a worker of checking and adjusting the clamping device 10. Specifically, the reminding device is a buzzer, and when the clamping or loosening action is not executed in place, the controller 40 drives the buzzer to start and sound to remind the worker. In other embodiments, the reminding device may be other devices with reminding functions, such as a lamp, and is not limited to the above-described embodiments.

The embodiment further comprises a display device for displaying the detection information of the flow detection device 30, the specific display device is a display screen, the display screen can directly display the flow value detected by the flow detection device 30 during the clamping action or the loosening action and the comparison with the standard set value, and through the display of the display screen, a worker can intuitively know whether the problem occurs in the clamping process or the loosening process, so that the corresponding repair can be quickly carried out. In other embodiments, the display device may also be a flow meter.

The above additional technical features can be freely combined and used in superposition by those skilled in the art without conflict.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims

1. A clamping detection device for a milling machine, comprising:

a clamping device (10);

the hydraulic driver is communicated with the clamping device (10) through a pipeline (50) and is used for pumping or extruding hydraulic oil into the clamping device (10) to enable the clamping device (10) to act;

and the flow detection device (30) is arranged on the pipeline (50) and is used for detecting the flow of the hydraulic oil pumped and extruded by the hydraulic driver.

2. A clamping detection device for a milling machine according to claim 1, characterized in that the flow detection device (30) is an oval gear flow meter.

3. The clamping detection device for a milling machine according to claim 1, characterized by further comprising filter devices for filtering hydraulic oil, the filter devices being respectively provided on the pipe (50) at both ends of the flow rate detection device (30).

4. The clamping detection device for the milling machine according to claim 1, wherein the clamping device (10) is provided with an oil chamber communicating with the conduit (50), and further comprises a piston (13) slidably disposed in the oil chamber and a clamping member (14) connected to the piston (13) and moving together with the piston (13), the piston (13) dividing the oil chamber into a clamping oil chamber (11) and a release oil chamber (12) communicating with the conduit (50), respectively.

5. The clamping detection device for a milling machine according to claim 4, wherein the clamping oil chamber (11) and the unclamping oil chamber (12) are filled with the same shape and volume of hydraulic oil.

6. A clamping detection device for a milling machine according to claim 1, further comprising a reminding device for reminding a worker, the reminding device acting on the detection information of the flow rate detection device (30).

7. A clamping detection device for a milling machine according to claim 1, characterized by further comprising a display device for displaying detection information of the flow rate detection device (30).