A water-based fully synthetic cutting fluid sedimentation test device and test method

Abstract

The present invention provides a device and method for testing the sedimentation of a water-based fully synthetic cutting fluid. The device comprises a base, a fixing assembly, a first photoelectric sensor and a lifting assembly. The fixing assembly is used to fix a container placed on the base. The first photoelectric sensor has a first transmitter and a first receiver, which are arranged on both sides of the base respectively. The lifting assembly is used to drive the first transmitter and the first receiver to rise and fall synchronously. By designing the first photoelectric sensor, when the sedimentation height of the cutting debris reaches or exceeds the installation height of the first photoelectric sensor, the signal of the first photoelectric sensor will be blocked, so as to serve as a basis for judging the time node when the sedimentation of the cutting debris is completed, and then the sedimentation of the cutting fluid stock solution can be evaluated. The testing device has the characteristics of simple structure, low cost and easy operation under the premise of ensuring the accuracy of the test.

Description

Technical Field

[0001] The invention relates to the technical field of testing equipment, and in particular to a sedimentation testing device and a testing method for a water-based fully synthetic cutting fluid. Background Art

[0002] Water-based synthetic cutting fluid does not contain mineral oil and is a clear and transparent liquid. It is an indispensable auxiliary material in the single crystal silicon and quartz cutting process. It has the functions of lubrication, cleaning, sedimentation, cooling and rust prevention. It can improve the durability of the tool, ensure the processing quality and processing accuracy, thereby improving production efficiency and reducing costs.

[0003] At present, most people only pay attention to the lubrication, cleaning, cooling and rust prevention properties of water-based fully synthetic cutting fluids, but fail to notice that sedimentation is also an important indicator for considering the processing performance of cutting fluids. During processing, cutting fluids will wash away a large amount of grinding debris and flow into the reservoir along with the cutting fluid. Some large pieces of grinding debris will be blocked by the filter before entering the reservoir, but some fine grinding powder will be dispersed in the cutting fluid. If it cannot settle quickly in the reservoir, it will pass through the water pump with the cutting fluid and contact the workpiece again, causing damage to the workpiece and reducing the tool durability.

[0004] Therefore, considering the sedimentation of cutting fluid is also an important indicator to measure its processing performance. However, the sedimentation detection equipment of water-based fully synthetic cutting fluid in the prior art needs to use devices such as transmittance detectors, industrial cameras and dedicated image processing systems for detection. The general steps are as follows: take a certain weight of cutting chips and add them to a certain amount of cutting fluid stock solution, stir evenly and add them to a measuring cylinder. The light source on one side of the measuring cylinder can emit uniform light with the same height as the measuring cylinder. A transmittance detector is installed on the other side of the measuring cylinder to output the transmittance in real time in the computer. According to the transmittance, the height of the sedimentation layer that changes with time is analyzed, and the sedimentation volume of the quantitative time is observed to determine the sedimentation of the cutting fluid.

[0005] However, the above detection equipment has a complex overall structure and high cost, and is not suitable for wide application. Therefore, a water-based fully synthetic cutting fluid sedimentation test device is proposed. Summary of the invention

[0006] In view of the defects in the prior art, the purpose of the present invention is to provide a water-based fully synthetic cutting fluid sedimentation test device and test method, which has a simple overall structure, low cost and is easy to operate while ensuring test accuracy.

[0007] In order to achieve the above-mentioned purpose, the present invention provides a water-based fully synthetic cutting fluid sedimentation test device, comprising a base; a fixing component for fixing a container placed on the base; a first photoelectric sensor having a first transmitter and a first receiver, the first transmitter and the first receiver being respectively arranged on both sides of the base; and a lifting component for driving the first transmitter and the first receiver to rise and fall synchronously.

[0008] Preferably, the base has a rotation function, and the rotation axis of the base is perpendicular to the light beam emitted by the first transmitter; it also includes two second photoelectric sensors, the second photoelectric sensors have a second transmitter and a second receiver, the two second transmitters are respectively arranged on both sides of the first transmitter, the light beam emitted by the second transmitter is perpendicular to the rotation axis of the base in space, and the two second receivers are respectively arranged on both sides of the first receiver.

[0009] Preferably, it further comprises a vibrator, which is arranged in the base and is used to vibrate the base.

[0010] Preferably, the lifting assembly includes two electric lifting rods, the first transmitter and the second transmitter are installed on one of the electric lifting rods, and the first receiver and the second receiver are installed on the other electric lifting rod.

[0011] Preferably, the fixing assembly includes a screw, two nuts and two clamping arms. The screw is rotatably arranged on the base. The screw has a first threaded portion and a second threaded portion with opposite thread rotation directions. The two nuts are respectively threadedly engaged with the first threaded portion and the second threaded portion. The nuts and the base do not rotate relative to each other. Each clamping arm is arranged on the corresponding nut.

[0012] Preferably, the base includes a support platform and a bearing platform, the support platform is arranged on the bearing platform, the fixing assembly is arranged on the support platform, the bearing platform is used to drive the support platform to rotate, and the vibrator is arranged in the support platform.

[0013] The present invention also provides a testing method based on the above-mentioned water-based fully synthetic cutting fluid sedimentation testing device, comprising the following steps:

[0014] S1. Pre-calculate the theoretical height at which the cutting debris is completely settled, so that the installation height of the first photoelectric sensor and the second photoelectric sensor is slightly lower than the theoretical height at which the cutting debris is completely settled;

[0015] S2, placing the container on the base, fixing the container with the fixing assembly, adding a certain amount of cutting fluid stock solution and a certain amount of cutting chips into the container, stirring evenly and then starting timing;

[0016] S3, until the signals of the first photoelectric sensor and the second photoelectric sensor are blocked, the timing is terminated, and the time on the timer is read, which is the time when the cutting debris is completely settled.

[0017] Preferably, in step S3, if the signals of the first photoelectric sensor and the second photoelectric sensor are partially blocked, the vibrator is started to make the top surface of the cutting chip sedimentation layer flat; until the signals of the first photoelectric sensor and the second photoelectric sensor are blocked, the timing is terminated and the time on the timer is read, which is the time when the cutting chips are completely settled.

[0018] Beneficial effects of the present invention:

[0019] The present invention discloses a device and method for testing the sedimentation of a water-based fully synthetic cutting fluid. The device and method design a first photoelectric sensor. During the sedimentation of cutting chips, the signal of the first photoelectric sensor will not be blocked. When the sedimentation height of the cutting chips reaches or exceeds the installation height of the first photoelectric sensor, the signal of the first photoelectric sensor will be blocked. This is used as a basis for judging the time node when the sedimentation of the cutting chips is completed, and the sedimentation of the cutting fluid stock solution can be evaluated. While ensuring the accuracy of the test, the device has the characteristics of simple structure, low cost and easy operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0021] Figure 1 A schematic diagram of the structure of a sedimentation test device for a water-based fully synthetic cutting fluid provided in one embodiment of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure in which a first launcher and two second launchers are installed on an electric lifting rod;

[0023] Figure 3 is a schematic diagram of the structure of the base;

[0024] Figure 4 is a cross-sectional schematic diagram of the test device;

[0025] Figure 5 is a schematic diagram showing that signals of the first photoelectric sensor and the second photoelectric sensor are both blocked;

[0026] Figure 6 A schematic diagram showing that the signals of the first photoelectric sensor and the second photoelectric sensor are partially blocked;

[0027] Reference numerals:

[0028] 10. Base; 11. Support platform; 12. Load-bearing platform; 20. Fixing assembly; 21. Screw rod; 22. Nut; 23. Clamp arm; 31. First transmitter; 32. First receiver; 33. Second transmitter; 34. Second receiver; 40. Vibrator; 50. Electric lifting rod. DETAILED DESCRIPTION

[0029] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0030] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0031] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0032] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0033] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] like Figure 1-6 As shown, in one embodiment of the present invention, a water-based fully synthetic cutting fluid sedimentation test device is provided, comprising a base 10, a fixing assembly 20, a first photoelectric sensor and a lifting assembly. The fixing assembly 20 is used to fix a container (the container is usually a measuring cylinder) placed on the base 10, the first photoelectric sensor has a first transmitter 31 and a first receiver 32, the first transmitter 31 and the first receiver 32 are respectively arranged on both sides of the base 10, and the lifting assembly is used to drive the first transmitter 31 and the first receiver 32 to rise and fall synchronously.

[0036] The tester first places the container on the base 10, fixes the container, adds a certain amount of cutting fluid to the container, and then adds a certain amount of cutting chips, stirs evenly and starts timing. After the signal of the first photoelectric sensor is cut off (the light beam emitted by the first emitter 31 ( Figure 5 and Figure 6 The light beam 1) is blocked by the cutting debris sedimentation layer, and the first receiver 32 cannot receive the light signal, the timing is terminated, and the time on the timer is read. This time can be regarded as the time when the cutting debris sedimentation is completed, and is also an indicator for evaluating the sedimentation of the cutting fluid.

[0037] The working principle of the above test process is: under a standard container, after a certain amount of cutting chips are completely settled, their settling height at the bottom of the container is fixed. Therefore, the theoretical height at which the cutting chips are completely settled is calculated in advance, and then the lifting assembly drives the installation height of the first photoelectric sensor to be slightly lower than the height at which the cutting chips are completely settled. For example, in a certain test process, the theoretical height at which the cutting chips are completely settled is 20 mm, and the first photoelectric sensor can be installed at a position between 0.2 and 0.5 mm below the top surface of the cutting chip sedimentation layer.

[0038] During the settling process of the cutting chips, the signal of the first photoelectric sensor will not be blocked. When the settling height of the cutting chips reaches or exceeds the installation height of the first photoelectric sensor, the signal of the first photoelectric sensor will be blocked, thereby serving as a basis for judging the time node when the cutting chips settling is completed.

[0039] Of course, there may still be a small amount of cutting debris that has not completely settled, but the impact of this part of cutting debris on the entire test result is very small and can be ignored. In addition, the test standards are the same for different types of cutting fluids, or the same type of cutting fluids with different usage conditions. Therefore, the impact of this part of cutting debris that has not completely settled on all test samples is the same, so the reliability of the test device provided in this embodiment is no problem.

[0040] To sum up, the present embodiment discloses a water-based fully synthetic cutting fluid sedimentation test device, which designs a first photoelectric sensor. During the sedimentation of cutting chips, the signal of the first photoelectric sensor will not be blocked. When the sedimentation height of the cutting chips reaches or exceeds the installation height of the first photoelectric sensor, the signal of the first photoelectric sensor will be blocked. This is used as a basis for judging the time node when the sedimentation of the cutting chips is completed, and the sedimentation of the cutting fluid stock solution can be evaluated. While ensuring the accuracy of the test, the test device has the characteristics of simple structure, low cost and easy operation.

[0041] In one embodiment, the base 10 has a rotation function. Specifically, the base 10 includes a support platform 11 and a bearing platform 12. The support platform 11 is disposed on the bearing platform 12. The fixing component 20 is disposed on the support platform 11. The bearing platform 12 is used to drive the support platform 11 to rotate. The rotation axis of the support platform 11 is perpendicular to the light beam emitted by the first emitter 31.

[0042] The test device further includes two second photoelectric sensors, each of which has a second transmitter 33 and a second receiver 34. The two second transmitters 33 are respectively arranged on both sides of the first transmitter 31. The light beams ( Figure 5 and Figure 6 The light beams 2, 3) in the image are perpendicular to the rotation axis of the base 10 in space, and the two second receivers 34 are arranged on both sides of the first receiver 32 respectively.

[0043] In the above test process, after the cutting chips are stirred in the cutting fluid stock solution, it is difficult to evenly distribute the cutting chips in the cutting fluid stock solution. For example, the stirring process is performed by the tester using a stirring rod, so the cutting chips will not settle evenly during the settling process, which will make the top surface of the cutting chip sedimentation layer uneven. If only the first photoelectric sensor is used for detection, the accuracy of the test result may not be guaranteed.

[0044] Therefore, by adding two second photoelectric sensors, the light beam emitted by the second emitter 33 is parallel to the light beam emitted by the first emitter and is at the same level, so that the detection range can be expanded, thereby improving the accuracy of the test results. At the same time, the base 10 is designed to have a rotation function, and the support platform 11 can drive the container to rotate. With the cooperation of the first photoelectric sensor and the two second photoelectric sensors, the accuracy of the test results can be further improved.

[0045] Furthermore, the testing device further includes a vibrator 40 , which is disposed in the support platform 11 , and is used to vibrate the support platform 11 .

[0046] In the above test process, after the cutting chips are stirred in the cutting fluid stock solution, it is difficult to evenly distribute the cutting chips in the cutting fluid stock solution. For example, the stirring process is performed by the test personnel using a stirring rod. In this way, the cutting chips will not settle evenly during the sedimentation process, which will make the top surface of the cutting chip sedimentation layer appear uneven.

[0047] At this time, during the sedimentation process, some of the photoelectric sensor signals will be blocked, while others will not be blocked (see Figure 6 ), for example, the signal of the first photoelectric sensor is blocked, and the signal of the second photoelectric sensor is not blocked. In this case, it is possible that the cutting chips have been settled or are close to being settled, or it is possible that they have not been settled or it will take a long time to be settled. Therefore, when the sensor generates the above signal, it is difficult to accurately judge whether the settling process has been completed.

[0048] In view of this situation, in this embodiment, when the sensor generates the above signal, the vibrator 40 vibrates the support table 11 and the container for a short time (for example, 0.1 to 0.5 seconds) to make the top surface of the cutting debris precipitation layer flat. If the signals of the first photoelectric sensor and the second photoelectric sensor are both blocked (see Figure 5 ), it indicates that the sedimentation process has been completed. If the signals of the first photoelectric sensor and the second photoelectric sensor are not blocked, it indicates that the sedimentation process is still continuing.

[0049] In this embodiment, the purpose of providing two second photoelectric sensors is to expand the detection range and improve the accuracy of the test result. On the basis of three photoelectric sensors, by providing a vibrator 40, the accuracy of the test result can be further improved.

[0050] In one embodiment, in order to facilitate adaptive adjustment of the height of the first sensor and the second photoelectric sensor, the lifting assembly includes two electric lifting rods 50, the first transmitter 31 and the second transmitter 33 are installed on one of the electric lifting rods 50, and the first receiver 32 and the second receiver 34 are installed on the other electric lifting rod 50.

[0051] In one embodiment, the fixing assembly 20 includes a screw rod 21, two nuts 22 and two clamp arms 23. The screw rod 21 is rotatably arranged on the base 10. The screw rod 21 has a first threaded portion and a second threaded portion with opposite thread rotation directions. The two nuts 22 are threadedly engaged with the first threaded portion and the second threaded portion respectively. The nuts 22 and the base 10 do not rotate relative to each other. Each clamp arm 23 is arranged on the corresponding nut 22.

[0052] In the description of the present invention, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A water-based fully synthetic cutting fluid sedimentation test device, characterized in that: include: Base (10); A fixing assembly (20) for fixing a container placed on the base (10); A first photoelectric sensor having a first transmitter (31) and a first receiver (32), wherein the first transmitter (31) and the first receiver (32) are respectively arranged on two sides of the base (10); as well as A lifting assembly is used to drive the first transmitter (31) and the first receiver (32) to rise and fall synchronously.

2. The sedimentation test device for water-based fully synthetic cutting fluid according to claim 1, characterized in that: The base (10) has a rotation function, and the rotation axis of the base (10) is perpendicular to the light beam emitted by the first emitter (31); The invention also comprises two second photoelectric sensors, wherein the second photoelectric sensors have a second transmitter (33) and a second receiver (34), the two second transmitters (33) are respectively arranged on both sides of the first transmitter (31), the light beams emitted by the second transmitter (33) are spatially perpendicular to the rotation axis of the base (10), and the two second receivers (34) are respectively arranged on both sides of the first receiver (32).

3. The sedimentation test device for water-based fully synthetic cutting fluid according to claim 2, characterized in that: It also includes a vibrator (40), which is arranged in the base (10) and is used to make the base (10) vibrate.

4. The sedimentation test device for water-based fully synthetic cutting fluid according to claim 2, characterized in that: The lifting assembly comprises two electric lifting rods (50), the first transmitter (31) and the second transmitter (33) are installed on one of the electric lifting rods (50), and the first receiver (32) and the second receiver (34) are installed on the other electric lifting rod (50).

5. The sedimentation test device for water-based fully synthetic cutting fluid according to claim 1, characterized in that: The fixing assembly (20) comprises a screw (21), two nuts (22) and two clamping arms (23); the screw (21) is rotatably arranged on the base (10); the screw (21) has a first threaded portion and a second threaded portion with opposite thread rotation directions; the two nuts (22) are respectively threadedly engaged with the first threaded portion and the second threaded portion; the nut (22) and the base (10) are non-rotatable relative to each other; and each clamping arm (23) is arranged on the corresponding nut (22).

6. The sedimentation test device for water-based fully synthetic cutting fluid according to claim 3, characterized in that: The base (10) comprises a support platform (11) and a bearing platform (12); the support platform (11) is arranged on the bearing platform (12); the fixing assembly (20) is arranged on the support platform (11); the bearing platform (12) is used to drive the support platform (11) to rotate; and the vibrator (40) is arranged in the support platform (11).

7. A test method based on the sedimentation test device of a water-based fully synthetic cutting fluid according to any one of claims 3 to 6, characterized in that: The following steps are involved: S1. Pre-calculate the theoretical height at which the cutting debris is completely settled, so that the installation height of the first photoelectric sensor and the second photoelectric sensor is slightly lower than the theoretical height at which the cutting debris is completely settled; S2, placing the container on the base (10), fixing the container with the fixing assembly (20), adding a certain amount of cutting fluid stock solution into the container, and then adding a certain amount of cutting chips, stirring evenly, and starting timing; S3, until the signals of the first photoelectric sensor and the second photoelectric sensor are blocked, the timing is terminated, and the time on the timer is read, which is the time when the cutting debris is completely settled.

8. The testing method according to claim 7, characterized in that: In the step S3, if the signals of the first photoelectric sensor and the second photoelectric sensor are partially blocked, the vibrator (40) is started to make the top surface of the chip sedimentation layer flat; When the signals of the first photoelectric sensor and the second photoelectric sensor are blocked, the timing is terminated and the time on the timer is read, which is the time when the cutting debris is completely settled.

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