A measuring device for a deep hole drilling machine

Abstract

This invention discloses a measuring device for a deep hole drilling machine, comprising: multiple measuring components and a processing module; the multiple measuring components are respectively installed on multiple movable support components of the deep hole drilling machine, and each includes: a main grating ruler and an auxiliary grating ruler; wherein, both the main grating ruler and the auxiliary grating ruler are used to detect the displacement position of the moving part of the corresponding movable support component; the processing module is communicatively connected to each measuring component and can read the position values ​​detected by the main grating ruler and the auxiliary grating ruler of each measuring component, and compare whether the difference between these two position values ​​exceeds a preset error value for the displacement position of the moving part of the corresponding movable support component. This provides dual positioning detection for the moving parts of the movable support components, and the processing module reads and compares the results, thereby improving the positioning detection accuracy of the moving parts of the movable support components of the deep hole drilling machine and avoiding affecting the drilling positioning accuracy of the deep hole drilling machine.

Description

Technical Field

[0001] This invention relates to the field of CNC machine tool technology, and in particular to a measuring device for a deep hole drilling machine. Background Technology

[0002] Currently, deep hole drilling machines have multiple movable support assemblies. Some movable support assemblies consist of a bed and a slide that can be slidably mounted on the bed, while others consist of a column (mounted on the slide) and a spindle box that can be slidably mounted on the column. The positioning accuracy of these movable support assemblies is also a factor affecting the drilling positioning accuracy of deep hole drilling machines. To improve drilling positioning accuracy, each movable support assembly is usually measured using a linear encoder. However, due to certain limitations, a linear encoder alone may not be able to fully detect the high-precision positioning of the movable support assembly, which may affect the drilling positioning accuracy of the deep hole drilling machine. Summary of the Invention

[0003] In view of this, the present invention provides a measuring device for a deep hole drilling machine, which can improve the positioning and detection accuracy of the moving parts of the movable support assembly of the deep hole drilling machine and avoid affecting the drilling positioning accuracy of the deep hole drilling machine.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A measuring device for a deep hole drilling machine includes: multiple measuring components and a processing module;

[0006] Multiple measuring components are used to be installed on multiple movable support components of a deep hole drilling machine, and each includes: a main grating ruler and an auxiliary grating ruler; wherein, the main grating ruler and the auxiliary grating ruler are used to detect the displacement position of the moving parts of the corresponding movable support components;

[0007] The processing module is communicatively connected to each of the measuring components and can read the position values ​​detected by the main grating ruler and the auxiliary grating ruler of each measuring component, and compare whether the difference between the two position values ​​exceeds the preset error value of the displacement position of the moving part of the corresponding active support component.

[0008] Preferably, the plurality of measurement components include: a first measurement component and a second measurement component;

[0009] The first measuring component is used to be disposed between the bed and the slide of the deep hole drilling machine, and includes: a first main grating ruler and a first auxiliary grating ruler, both of which are used to detect the displacement position of the slide;

[0010] The second measuring component is used to be installed between the column and the spindle box of the deep hole drilling machine, and includes: a second main grating ruler and a second auxiliary grating ruler, both of which are used to detect the displacement position of the spindle box.

[0011] Preferably, the first main grating ruler and the first auxiliary grating ruler are arranged in parallel on the bed and are both distributed along the sliding direction of the slide; wherein the reading heads of the first main grating ruler and the first auxiliary grating ruler can slide with the slide.

[0012] Preferably, the first measuring component further includes a first grating ruler bracket;

[0013] The first grating ruler bracket is disposed at the bottom of the slide;

[0014] The first main grating ruler and the first auxiliary grating ruler are located on both sides of the first grating ruler bracket, and their reading heads are connected to the first grating ruler bracket.

[0015] Preferably, the first grating ruler bracket, the first main grating ruler, and the first auxiliary grating ruler are all located between the gear and a slider at the bottom of the slide block.

[0016] Preferably, the second main grating ruler is vertically disposed on the first side wall of the column, and its reading head is connected to the spindle box; wherein, the first side wall of the column faces the spindle box;

[0017] The second auxiliary grating ruler is vertically disposed on the first side wall of the column, and its reading head is connected to the spindle box; or, the second auxiliary grating ruler is a circular grating ruler, and is used to detect the angular displacement of the lead screw assembly of the spindle box, and the processing module can convert the angular displacement detected by the circular grating ruler into the displacement position of the spindle box.

[0018] Preferably, the second auxiliary grating ruler is a circular grating ruler;

[0019] The second measuring component includes a second grating ruler support;

[0020] The circular grating ruler is mounted on the first end of the lead screw via the second grating ruler bracket; wherein the first end of the lead screw and the motor of the lead screw assembly are located on the same side of the spindle box.

[0021] Preferably, the second main grating ruler is located between a lead screw and a slider on the first side wall of the column.

[0022] Preferably, the processing module is a processing unit in the CNC system of the deep hole drilling machine.

[0023] A deep hole drilling machine includes a measuring device, which is the measuring device for a deep hole drilling machine as described above.

[0024] As can be seen from the above technical solution, the measuring device for deep hole drilling machines provided by the present invention equips each movable support assembly of the deep hole drilling machine with a measuring component including two grating rulers, one main and one auxiliary, which are used to detect the displacement position of the moving part of the movable support assembly. This provides dual positioning detection for the moving part of each movable support assembly. Then, the processing module reads the position values ​​of the two grating rulers of the measuring component, compares the difference between the position values ​​of the two grating rulers, and determines whether the difference is greater than the preset error value of the displacement position of the moving part of the corresponding movable support assembly. The result is then fed back to the CNC system of the deep hole drilling machine. This provides dual positioning detection for the moving parts of the movable support assembly. The processing module reads and makes corresponding comparisons, thereby improving the positioning detection accuracy of the moving parts of the movable support assembly of the deep hole drilling machine. This achieves high-precision positioning detection of the moving parts of the movable support assembly, avoiding affecting the drilling positioning accuracy of the deep hole drilling machine. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A schematic diagram illustrating the arrangement of the first measuring component between the machine tool bed and the slide, as provided in an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram showing the installation of the second measuring component on the column and spindle box of a machine tool according to an embodiment of the present invention.

[0028] Figure 3 for Figure 2 A magnified view of a portion of the image;

[0029] Figure 4 A flowchart illustrating the detection process of the measuring device provided in an embodiment of the present invention.

[0030] Among them, 100 is the bed, 110 is the guide rail, 200 is the slide, 210 is the slider, 300 is the column, 400 is the spindle box, 510 is the gear, 520 is the rack, 530 is the gear drive motor, 610 is the lead screw, and 620 is the motor.

[0031] 1 is the first main grating ruler, 2 is the first auxiliary grating ruler, 3 is the second main grating ruler, 4 is the first grating ruler support, 5 is the circular grating ruler, and 6 is the second grating ruler support. Detailed Implementation

[0032] Regarding the aforementioned background technology, deep hole drilling machines typically use a single grating ruler to detect the position of moving parts in a movable support assembly. However, in actual use, due to factors such as installation errors, loose reading heads, machine tool vibration, or local structural deformation, the detection by a single grating ruler may not accurately determine the positioning accuracy of the moving parts. This could lead to the machine tool continuing to drill with insufficient positioning accuracy, thus affecting drilling accuracy. To address this, this solution provides a measuring device that configures two grating rulers (primary and secondary) for each movable support assembly and compares the position values ​​detected by the primary and secondary grating rulers using a processing module. This improves the positioning detection accuracy of moving parts and enhances the drilling positioning accuracy of the deep hole drilling machine.

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] The measuring device for a deep hole drilling machine tool provided in this embodiment of the invention includes: multiple measuring components and a processing module;

[0035] Multiple measuring components are used to install on multiple movable support components of a deep hole drilling machine, and each includes: a main grating ruler and an auxiliary grating ruler; wherein, the main grating ruler and the auxiliary grating ruler are used to detect the displacement position of the moving parts of the corresponding movable support components;

[0036] The processing module is connected to each measuring component and can read the position values ​​detected by the main grating ruler and the auxiliary grating ruler of each measuring component, and compare whether the difference between the two position values ​​exceeds the preset error value of the displacement position of the moving part of the corresponding active support component.

[0037] It should be noted that deep hole drilling machines typically include multiple movable support assemblies capable of relative movement; these movable support assemblies can be understood as relatively moving structures within the machine tool, consisting of fixed and moving parts; for example... Figure 1 and Figure 2As shown, the multiple movable support assemblies include: a movable support assembly consisting of a bed 1 and a slide 2, and a movable support assembly consisting of a column 3 and a spindle box 4; of course, it may also include movable support assemblies in other directions of movement; wherein, the slide 200 can slide horizontally along the bed 100, and the spindle box 400 can slide vertically along the column 300; of course, the positional accuracy (positioning accuracy) of the slide 200 and the spindle box 400 will affect the drilling positioning accuracy of the deep hole drilling machine.

[0038] Multiple measuring components are used to install on multiple movable support components of a deep hole drilling rig, and each includes a main grating ruler and an auxiliary grating ruler (secondary grating ruler). The main and auxiliary grating rulers of each measuring component are used to detect the displacement position of the moving parts of the corresponding movable support component. That is, this measuring device can equip each movable support component of the deep hole drilling rig with a measuring component including both main and auxiliary grating rulers. The main and auxiliary grating rulers respectively detect the displacement position or movement position of the moving parts of the movable support component, i.e., they are used to detect the positioning accuracy of the moving parts of the movable support component. Of course, in each measuring component, the main grating ruler is used to install on the movable support component... The fixed component of the movable support assembly has a reading head that can move with the moving component. The auxiliary grating ruler can be set on the fixed component of the movable support assembly, and its reading head can move with the moving component. Alternatively, the auxiliary grating ruler can be set on the moving component of the movable support assembly, as detailed below. Of course, the main grating ruler can be used to provide main positioning for the moving component of the movable support assembly, and the auxiliary grating ruler can be used to provide auxiliary positioning for the moving component of the movable support assembly. In other words, the main grating ruler can serve as the main position feedback element for the moving component of the movable support assembly, and the auxiliary grating ruler can serve as a redundant detection element or a verification detection element for the moving component of the movable support assembly.

[0039] The processing module communicates with multiple measuring components and can read the position values ​​detected by the main and auxiliary grating rulers of each measuring component. It compares the difference between the position values ​​of the main and auxiliary grating rulers of each measuring component and determines whether the difference exceeds a preset error value for the displacement position of the corresponding movable support component. For example, the processing module can read the position values ​​of the main and auxiliary grating rulers of the movable support component (bed 1 and slide 2), compare the difference between these two position values, and determine whether the difference exceeds a preset error value for the displacement position of slide 2. The processing module can also read the position values ​​of the column 3. The position values ​​of the main grating ruler and the auxiliary grating ruler of the movable support assembly 4 are compared, and the difference between these two position values ​​is determined to be whether the difference exceeds the preset error value of the displacement position of the main support assembly 4. If the difference between the position values ​​of the main grating ruler and the auxiliary grating ruler is less than the preset error value of the displacement position of the corresponding movable support assembly moving part, it indicates that the positioning accuracy of the movable support assembly moving part meets the requirements; if the difference between the position values ​​of the main grating ruler and the auxiliary grating ruler is greater than the preset error value of the displacement position of the corresponding movable support assembly moving part, it indicates that the positioning accuracy of the movable support assembly moving part fails to meet the requirements.

[0040] In addition, the processing module can also communicate with the CNC system (control system) of the deep hole drilling machine. This allows the CNC system to decide whether to perform drilling operations based on the feedback from the processing module's comparison results. Specifically, when the difference between the position values ​​of the main and auxiliary grating rulers is less than the preset error value for the displacement position of the corresponding moving part, it indicates that the positioning accuracy of the moving part is high, and the CNC system can use this feedback to control the drilling operation. When the difference between the position values ​​of the main and auxiliary grating rulers is greater than the preset error value for the displacement position of the corresponding moving part, it indicates that the positioning accuracy of the moving part is low, and the CNC system can use this feedback to control the drilling operation to be temporarily suspended. Therefore, if the difference between the position values ​​of the main and auxiliary grating rulers is within the preset error value, the machine tool... The CNC system can use this feedback to execute the drilling operation; if the difference between the position values ​​of the main grating ruler and the auxiliary grating ruler is outside the preset error value, the CNC system of the machine tool can use this feedback to automatically stop the drilling operation to avoid drilling in the wrong position; that is, the processing module reads the position values ​​of the main grating ruler and the auxiliary grating ruler at the same time and judges whether the deviation between the two position values ​​is within the allowable range; when the difference between the two position values ​​does not exceed the preset error value, it can be considered that the moving part is positioned normally (high positioning accuracy), and the detection result is reliable; when the difference between the two position values ​​exceeds the preset error value, it can be considered that the moving part has a positioning abnormality (low positioning accuracy), and the CNC system of the deep hole drilling machine can use this feedback to not execute the drilling action or pause the drilling action;

[0041] Among them, such as Figure 4As shown, before each drilling operation, the processing module can read the position values ​​of the main and auxiliary grating rulers of the corresponding movable support component and compare them within its program algorithm. If the difference between the position values ​​of the two grating rulers exceeds the preset error value of the displacement position of the moving part, the CNC system will generate an alarm signal to prompt the operator that there is a positioning error. This alarm signal can be conveyed to the operator through sound, light, or other appropriate means so that the operator can immediately stop the drilling operation. If the difference between the position values ​​of the two grating rulers does not exceed the preset error value of the displacement of the moving part, the CNC system will not generate an alarm signal, indicating that the drilling operation can continue. The drilling machine will then execute the drilling operation according to the instructions of the CNC system controller. Of course, by using the above measurement method, the positioning detection accuracy of the movable support component of the deep hole drilling machine can be improved, which can help improve the drilling positioning accuracy.

[0042] Specifically, the process by which the processing module determines the positioning accuracy of the movable support component can be as follows:

[0043] First, the CNC system of the deep hole drilling machine controls the moving part of a certain movable support assembly to move to the target position; for example, controlling the slide 200 to move along the bed 100 to the target position, or controlling the spindle box 400 to move along the column 300 to the target position; then, the main grating ruler and auxiliary grating ruler in the movable support assembly measuring assembly respectively detect the current position of the moving part and send the detected position value to the processing module; next, the processing module reads the position values ​​detected by the main grating ruler and auxiliary grating ruler, and calculates the absolute value of the difference between the two position values; then the processing module converts the difference... The value is compared with a preset error value for the displacement position of the moving part. If the difference is less than or equal to the preset error value, the processing module determines that the positioning of the moving part is normal and the positioning accuracy meets the drilling requirements. Then, it can send a signal to the CNC system of the deep hole drilling machine that the positioning meets the requirements. If the difference is greater than the preset error value, the processing module determines that the positioning of the moving part is abnormal, or determines that at least one of the main grating ruler and the auxiliary grating ruler may be abnormal. Then, it sends a signal, an alarm signal, or a drilling prohibition signal to the CNC system of the deep hole drilling machine that the positioning does not meet the requirements.

[0044] Furthermore, when a deep hole drilling machine has multiple movable support components, the processing module can perform the aforementioned comparison and judgment on each movable support component separately. Only when all movable support components involved in drilling positioning are judged to meet the positioning requirements will the CNC system allow the deep hole drilling machine to perform the drilling action. If any movable support component is judged to not meet the positioning requirements, the CNC system can stop the drilling action or prohibit the drilling action. In this way, the cumulative positioning errors of multiple movable support components can be avoided from affecting the drilling positioning accuracy.

[0045] Furthermore, the preset error value can be set according to factors such as the travel of the movable support component, the machining accuracy level of the machine tool, the drilling accuracy requirements, the resolution of the grating ruler, and the machine tool operating environment; different movable support components can correspond to different preset error values; for example, the horizontal travel of the slide 200 is relatively long, and its preset error value can be set according to the horizontal positioning accuracy requirements; the vertical movement of the spindle box 400 directly affects the position of the drilling axis, and its preset error value can be set according to the drilling depth and axis positioning accuracy requirements; the processing module allows operators to input or adjust the preset error values ​​of each movable support component in the human-machine interface of the CNC system;

[0046] In other words, this measuring device, by equipping each movable support component with two grating rulers (primary and secondary), and comparing the difference between the position values ​​of the primary and secondary grating rulers through a processing module to see if it exceeds the preset error value of the displacement position of the corresponding moving part, can achieve dual detection of the positioning accuracy of each movable support component of the deep hole drilling machine. In this way, on the one hand, it can improve the positioning detection accuracy and reliability of the moving parts in each movable support component; on the other hand, it can determine whether the current positioning state of the machine tool meets the drilling requirements before drilling, thereby reducing the risk of drilling deviation caused by positioning errors, and thus improving the drilling positioning accuracy of the deep hole drilling machine.

[0047] Therefore, this solution essentially provides a measuring device for detecting the positioning accuracy of a deep hole drilling rig. This measuring device equips each movable support assembly of the deep hole drilling rig with a measuring component including two grating rulers, one main and one auxiliary, to detect the displacement position (positioning accuracy) of the moving parts of that movable support assembly. This provides dual positioning detection for the moving parts of each movable support assembly. Then, the processing module reads the position values ​​of the two grating rulers of the measuring component, compares the difference between the two grating ruler position values, and determines whether the difference exceeds a preset error value for the displacement position of the corresponding movable support assembly's moving parts. The results are then fed back to the CNC system of the deep hole drilling machine. Compared to the existing method of providing a single positioning detection for the movable support assembly, this solution can provide dual positioning detection for the moving parts of the movable support assembly. The data is then read and compared by the processing module, which improves the positioning detection accuracy of the moving parts of the movable support assembly in the deep hole drilling machine. This enables high-precision positioning detection of the moving parts of the movable support assembly, thus avoiding affecting the drilling positioning accuracy of the deep hole drilling machine. Of course, this solution is applicable to high-precision, high-stability small-diameter deep hole machining of complex material tube sheets for large heat exchangers in industries such as nuclear power, energy, petrochemicals, and military.

[0048] In short, this solution improves the positioning accuracy of moving parts of each movable support assembly in a deep hole drilling machine by introducing auxiliary grating rulers into each measuring component. This helps improve drilling positioning accuracy, thereby enhancing the overall accuracy of the deep hole drilling machine and preventing waste of materials and manpower caused by positioning errors. Furthermore, this solution also provides a positioning error-proofing method for deep hole drilling machines and can be used to detect the position and determine the positioning accuracy of moving parts of multiple movable support assemblies on a deep hole drilling machine.

[0049] In this scheme, the multiple measurement components include: a first measurement component and a second measurement component;

[0050] like Figure 1 As shown, the first measuring component is used to be set between the bed 100 and the slide 200 of the deep hole drilling machine, and includes: a first main grating ruler 1 and a first auxiliary grating ruler 2, both of which are used to detect the displacement position of the slide 200.

[0051] like Figure 2 As shown, the second measuring component is used to be set between the column 300 and the spindle box 400 of the deep hole drilling machine, and includes: a second main grating ruler 3 and a second auxiliary grating ruler, both of which are used to detect the displacement position of the spindle box 400.

[0052] It should be noted that, as described above, the bed 100 and the slide 200 constitute a movable support assembly in a deep hole drilling machine. The slide 200 is the moving part of this movable support assembly, and the bed 100 is the fixed part. The two sides of the bottom of the slide 200 can slide one-to-one with the guide rails 110 on both sides of the bed 100 through the slider 210, and can slide along the guide rails 110 on both sides of the bed 100 under the drive of the drive mechanism. In this embodiment, the sliding of the slide 200 can be in the form of a gear and rack. Figure 1As shown, a rack 520 can be provided on the bed 100, and a gear 510 can be provided at the bottom of the slide 200 and mesh with the rack 520. The gear 510 can be driven to rotate by a gear drive motor 530 located at the top of the slide 200. When the gear drive motor 530 drives the gear 510 to rotate, the gear 510 can roll along the rack 520, thereby driving the sliders on both sides of the bottom of the slide 200 to slide along the guide rails 110 on both sides of the bed 100. To improve the positioning and detection accuracy of the slide 200... In this embodiment, a first measuring component is provided between the bed 100 and the slide 200, including two main and auxiliary grating rulers: a first main grating ruler 1 and a first auxiliary grating ruler 2, both used to detect the displacement position or positioning accuracy of the slide 200 relative to the bed 100; the processing module reads the position values ​​detected by the first main grating ruler 1 and the first auxiliary grating ruler 2, and compares whether the difference between the two exceeds a preset error value for the displacement position of the slide 200, thereby determining the positioning accuracy of the slide 200;

[0053] Similarly, as described above, the column 300 and the spindle box 400 constitute another movable support assembly in the deep hole drilling machine. The spindle box 400 is the moving part in this movable support assembly, and the column 300 is the fixed part. The column 300 can be mounted on the slide 200. The spindle box 400 can slide with the vertical guide rails on both sides of the first sidewall of the column 300 via a slider, and can slide up and down along the first sidewall of the column 300 under the drive of the drive assembly. In this embodiment, the way to drive the spindle box 400 to slide up and down can be in the form of a lead screw assembly. Figure 2 As shown, the lead screw assembly may include: a lead screw 610, a lead nut (nut block), and a motor 620. The motor 620 may be disposed at the top of the first side wall of the column 300 and is used to drive the lead screw 610 to rotate. The lead screw 610 and the lead nut on the spindle box 400 are threadedly engaged, thus converting the rotation of the lead screw 610 into the vertical sliding of the spindle box 400. To improve the positioning and detection accuracy of the spindle box 400, this embodiment provides a second measuring component between the column 300 and the spindle box 400, and includes: a second main beam... The two main and auxiliary grating rulers, grating ruler 3 and the second auxiliary grating ruler, are used to detect the displacement position (positioning accuracy) of the spindle box 400 relative to the column 300. The processing module reads the position values ​​detected by the second main grating ruler 3 and the second auxiliary grating ruler, and compares whether the difference between the two exceeds the preset error value of the displacement position of the spindle box 400, thereby determining the positioning accuracy of the slide 200. Of course, the second auxiliary grating ruler does not need to be set between the column 300 and the spindle box 400, as detailed below.

[0054] Of course, the above design allows for dual detection of the horizontal position of the slide 200 and the vertical position of the spindle box 400, thereby improving the positioning accuracy of both the slide 200 and the spindle box 400. This, in turn, improves the positioning accuracy of the moving parts of the main movable support assembly of the deep hole drilling machine, thus helping to ensure the drilling positioning accuracy of the deep hole drilling machine. In addition to setting measuring components on the aforementioned movable support assembly, measuring components can also be set on other movable support assemblies that may affect the drilling positioning accuracy, thereby enabling the positioning accuracy judgment of more motion axes of the deep hole drilling machine.

[0055] Specifically, such as Figure 1 As shown, the first main grating ruler 1 and the first auxiliary grating ruler 2 are arranged in parallel on the bed 100 and are distributed along the sliding direction of the slide 200; wherein, the reading heads of the first main grating ruler 1 and the first auxiliary grating ruler 2 can slide with the slide 200.

[0056] It should be noted that, as Figure 1 As shown, the first main grating ruler 1 and the first auxiliary grating ruler 2 can both be linear grating rulers, and can be arranged parallel to each other on the top of the bed 100, and both can extend along the sliding direction of the slide 200; wherein, the scale gratings of the first main grating ruler 1 and the first auxiliary grating ruler 2 can be fixed on the top of the bed 100, and the reading head (grating reading head) can be connected to the bottom of the slide 200 so that it can slide synchronously with the slide 200; in this way, when the slide 200 slides along the two side rails 110 on the bed 100, the first main grating ruler 1 The first main grating ruler 1 and the first auxiliary grating ruler 2 can detect the displacement position of the slide 200 respectively; in addition, the first main grating ruler 1 and the first auxiliary grating ruler 2 can be located on the same side or different sides of the bed 100; of course, the above scheme is designed in such a way that the first main grating ruler 1 and the first auxiliary grating ruler 2 can directly detect the displacement position of the slide 200 respectively, and thus the processing module can make a judgment on the positioning accuracy based on this. In this way, the processing module can judge the positioning accuracy of the slide 200 without conversion, and this arrangement also facilitates the installation and maintenance of the grating ruler.

[0057] Furthermore, such as Figure 1 As shown, the first measuring component also includes a first grating ruler bracket 4;

[0058] The first grating ruler bracket 4 is located at the bottom of the slide 200;

[0059] The first main grating ruler 1 and the first auxiliary grating ruler 2 are located on both sides of the first grating ruler support 4, and their reading heads are connected to the first grating ruler support 4.

[0060] It should be noted that, as Figure 1As shown, the first grating ruler bracket 4 can be an L-shaped bracket with reinforcing ribs, and can be set at one end of the bottom of the slide 200, and can slide synchronously with the slide 200; the reading heads of the first main grating ruler 1 and the first auxiliary grating ruler 2 are respectively connected to the two sides of the first grating ruler bracket 4, so that the first grating ruler bracket 4 simultaneously drives the two reading heads to move along the corresponding scale grating when the slide 200 slides; of course, with this design, the reading heads of the first main grating ruler 1 and the first auxiliary grating ruler 2 can be moved synchronously by the same bracket, so that the motion reference of the two reading heads is consistent, improving the comparability of the detection values ​​of the first main grating ruler 1 and the first auxiliary grating ruler 2, and this arrangement can also make the structure of the first measuring component compact and facilitate the use of the bottom space of the slide 200.

[0061] Furthermore, such as Figure 1 As shown, the first grating ruler bracket 4, the first main grating ruler 1, and the first auxiliary grating ruler 2 are all located between the gear 510 and a slider 210 at the bottom of the slide block 200.

[0062] It should be noted that, as Figure 1 As shown, sliders 210 can be provided on both sides of the bottom of the slide 200, and guide rails 110 can be provided on both sides of the top of the bed 100, and slide in cooperation with the sliders 210 on both sides of the bottom of the slide 200. Of course, the first grating ruler bracket 4, the first main grating ruler 1 and the first auxiliary grating ruler 2 are distributed between the gear 510 and a slider 210 at the bottom of the slide 200, which can realize the compact arrangement of the first measuring component in the limited space at the bottom of the slide 200, and can also reduce the risk of interference between the first measuring component and the gear rack structure and the guide rail slider structure.

[0063] In this plan, such as Figure 2 As shown, the second main grating ruler 3 is vertically mounted on the first side wall of the column 300, and its reading head is connected to the spindle box 400; wherein, the first side wall of the column 300 faces the spindle box 400.

[0064] The second auxiliary grating ruler is set vertically on the first side wall of the column 300, and its reading head is connected to the spindle box 400; or, the second auxiliary grating ruler is a circular grating ruler 5, which is used to detect the angular displacement of the lead screw 610 of the lead screw assembly of the spindle box 400. The processing module can convert the angular displacement detected by the circular grating ruler 5 into the displacement position of the spindle box 400.

[0065] It should be noted that, as Figure 2As shown, the second main grating ruler 3 can be a linear grating ruler, and its scale grating is set vertically on the first side wall of the column 300 facing the spindle box 400. The reading head is connected to the spindle box 400 and can slide up and down with the spindle box 400. When the spindle box 400 slides vertically along the column 300, the second main grating ruler 3 can directly detect the vertical displacement position of the spindle box 400.

[0066] In addition, the second auxiliary grating ruler can adopt two schemes:

[0067] In the first scheme, the second auxiliary grating ruler is also a linear grating ruler, and is set vertically on the first side wall of the column 300, with its reading head connected to the spindle box 400; that is, both the second main grating ruler 3 and the second auxiliary grating ruler adopt linear displacement detection, and both can directly detect the vertical position of the spindle box 400 relative to the column 300; the advantage of this scheme is that the detection results are both linear displacement values, and the processing module can directly compare the position values ​​detected by the second main grating ruler 3 and the second auxiliary grating ruler, making data processing simple and judgment intuitive;

[0068] In the second option, such as Figure 3 As shown, the second auxiliary grating ruler is a circular grating ruler 5 (which can be a circular encoder). The circular grating ruler 5 can be used to install one end of the lead screw 610 of the lead screw assembly in the spindle box 400, and is used to detect the angular displacement of the lead screw 610. The lead screw assembly is the drive assembly used to drive the spindle box 400 to slide up and down along the column 300. Since the spindle box 400 achieves vertical sliding through the rotation of the lead screw 610, there is a corresponding relationship between the angular displacement of the lead screw 610 and the vertical displacement of the spindle box 400. The processing module can determine the angular displacement detected by the circular grating ruler 5 and combine it with... The lead or pitch of the lead screw 610 is used to convert the angular displacement of the lead screw 610 into the vertical displacement of the spindle box 400. Specifically, the circular grating ruler 5 detects the rotational displacement of the lead screw 610, while the second main grating ruler 3 detects the actual linear displacement of the spindle box 400. By comparing the difference between the two measurements, not only can the positioning accuracy of the spindle box 400 be determined, but it can also indirectly detect whether there are any transmission abnormalities in the lead screw assembly, such as slippage or loose mechanical connections between the lead screw 610 and the nut. Therefore, this solution has a certain degree of fault identification and redundant detection capability.

[0069] In other words, by setting the second main grating ruler 3 along the sliding direction of the spindle box 400 on the first side wall of the column 300, the vertical position of the spindle box 400 can be directly detected. By setting the second auxiliary grating ruler as a linear grating ruler or a circular grating ruler 5, different auxiliary detection schemes can be selected according to different machine tool structure spaces and detection requirements. This not only improves the positioning detection accuracy of the spindle box 400, but also enhances the adaptability of this measuring device.

[0070] Additionally, it should be noted that the processing module of this solution may have a data reading unit, a data conversion unit, a comparison and judgment unit, and a signal output unit. The data reading unit can be used to read the position values ​​output by the main grating ruler and the auxiliary grating ruler in each measuring component. The data conversion unit can be used to convert the detected value output by the auxiliary grating ruler into the linear displacement position of the corresponding moving part when it is not a linear displacement value. The comparison and judgment unit can be used to calculate the difference between the position value detected by the main grating ruler and the position value detected by the auxiliary grating ruler in the same measuring component, compare this difference with the preset error value of the displacement position of the moving part of the corresponding movable support component, and send the comparison result to the CNC system of the deep hole drilling machine.

[0071] Specifically, such as Figure 3 As shown, the second auxiliary grating ruler is a circular grating ruler 5;

[0072] The second measuring component includes a second grating ruler bracket 6;

[0073] The circular grating ruler 5 is mounted on the first end of the lead screw 610 via the second grating ruler bracket 6; wherein the first end of the lead screw 610 and the motor 620 of the lead screw assembly are located on the same side of the spindle box 400.

[0074] It should be noted that, as Figure 3 As shown, the second grating ruler bracket 6 can be mounted on the support structure of the column 300 or the lead screw assembly; the circular grating ruler 5 can be mounted on the second grating ruler bracket 6 and connected to or correspondingly positioned with the first end of the lead screw 610, so that the circular grating ruler 5 can detect the angular displacement of the first end of the lead screw 610; wherein, the first end of the lead screw 610 and the motor 620 are located on the same side of the spindle box 400, which can be understood as the circular grating ruler 5 being mounted on the end of the lead screw 610 closer to the motor 620. This arrangement facilitates the connection of the circular grating ruler 5, the lead screw 610, the motor 620 and their connections. The centralized arrangement of the structure reduces the installation space occupied by the circular grating ruler 5 and facilitates the wiring connection between the circular grating ruler 5 and the processing module. The circular grating ruler 5 can be an absolute circular grating ruler or an incremental circular grating ruler. Moreover, different types of circular grating ruler 5 can be selected according to the accuracy requirements and control needs of the deep hole drilling machine. Of course, this design can stably detect the angular displacement of the lead screw 610 and facilitate the integrated installation of the circular grating ruler 5 and the lead screw assembly. At the same time, since the circular grating ruler 5 is arranged on the side close to the motor 620, installation and maintenance are relatively convenient.

[0075] Furthermore, such as Figure 2 As shown, the second main grating ruler 3 is located between the lead screw 610 and a slider on the first side wall of the column 300.

[0076] It should be noted that the spindle box 400 can slide and engage with the vertical guide rails on both sides of the first side wall of the column 300 through the sliders on both sides. The lead screw 610 is used to drive the spindle box 400 to slide in the vertical direction. Of course, this design can improve the spatial arrangement of the second main grating ruler 3 on the column 300, reduce the possibility of interference with the lead screw assembly and guide rail slider structure, and help improve the stability and accuracy of the vertical position detection of the spindle box 400.

[0077] Furthermore, the processing module is the processing unit in the CNC system of a deep hole drilling machine.

[0078] It should be noted that the processing module can be a standalone processing unit or a processing unit integrated into the CNC system of the deep hole drilling machine. Preferably, the processing module can be a processing unit in the CNC system of the deep hole drilling machine, such as the PLC processing unit of the CNC system. Of course, this solution uses the processing unit in the CNC system of the deep hole drilling machine as the processing module of this measuring device, which can reduce the setting of additional hardware modules and enable this measuring device to be highly integrated with the machine tool control system. At the same time, the CNC system can directly control the drilling action based on the detection and judgment results, with fast response speed, simple control, and easy realization of automated and intelligent positioning accuracy monitoring.

[0079] In other words, this solution uses a main grating ruler and an auxiliary grating ruler to detect the displacement of the same moving part, and uses a processing module to compare and judge the error of the detection values ​​of the two grating rulers. Compared with the detection method of setting only one grating ruler, it can improve the positioning detection accuracy of key moving parts of deep hole drilling machines.

[0080] In addition, the measuring device provided in this solution has the following beneficial effects:

[0081] 1. By setting a main grating ruler and an auxiliary grating ruler for each movable support component, dual positioning detection of the displacement position of the moving part can be achieved, which can improve the positioning detection accuracy;

[0082] 2. By comparing the difference between the detection values ​​of the main and auxiliary grating rulers through the processing module, it is possible to determine whether the positioning of the movable support component meets the requirements before drilling, thereby reducing the risk of drilling errors.

[0083] 3. The first measuring component detects the position of the slide 200, and the second measuring component detects the position of the spindle box 400, which can cover the key moving parts in the deep hole drilling machine that affect the drilling positioning accuracy;

[0084] 4. By setting the first main grating ruler 1 and the first auxiliary grating ruler 2 in parallel on the bed 100, the horizontal displacement of the slide 200 can be intuitively and stably detected;

[0085] 5. By synchronously connecting the reading heads of the first main grating ruler 1 and the first auxiliary grating ruler 2 through the first grating ruler bracket 4, the comparability between the two detection values ​​and the compactness of the installation can be improved.

[0086] 6. By setting the second auxiliary grating ruler to a circular grating ruler 5, the angular displacement of the lead screw 610 can be converted into the vertical displacement of the spindle box 400, thus realizing mutual verification between different detection paths.

[0087] 7. By using the processing unit in the CNC system of the deep hole drilling machine as a processing module, the linkage between detection, judgment and drilling control can be realized, thereby improving the degree of automation and response speed;

[0088] 8. By expanding to more movable support components, the overall positioning accuracy detection capability of the deep hole drilling machine can be further improved.

[0089] Furthermore, this embodiment of the invention also provides a deep hole drilling machine tool, including a measuring device, which is the measuring device for a deep hole drilling machine tool as described above. Since this solution adopts the above-mentioned measuring device for a deep hole drilling machine tool, it also has corresponding beneficial effects, which can be referred to the foregoing description and will not be repeated here.

[0090] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0091] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A measuring device for a deep hole drilling machine, characterized in that, include: Multiple measurement components and processing modules; Multiple measuring components are used to be installed on multiple movable support components of a deep hole drilling machine, and each includes: a main grating ruler and an auxiliary grating ruler; wherein, the main grating ruler and the auxiliary grating ruler are used to detect the displacement position of the moving parts of the corresponding movable support components; The processing module is communicatively connected to each of the measuring components and can read the position values ​​detected by the main grating ruler and the auxiliary grating ruler of each measuring component, and compare whether the difference between the two position values ​​exceeds the preset error value of the displacement position of the moving part of the corresponding active support component.

2. The measuring device for a deep hole drilling machine according to claim 1, characterized in that, The plurality of measurement components include: a first measurement component and a second measurement component; The first measuring component is used to be disposed between the bed (100) and the slide (200) of the deep hole drilling machine, and includes: a first main grating ruler (1) and a first auxiliary grating ruler (2), both of which are used to detect the displacement position of the slide (200); The second measuring component is used to be set between the column (300) and the spindle box (400) of the deep hole drilling machine, and includes: a second main grating ruler (3) and a second auxiliary grating ruler, both of which are used to detect the displacement position of the spindle box (400).

3. The measuring device for a deep hole drilling machine according to claim 2, characterized in that, The first main grating ruler (1) and the first auxiliary grating ruler (2) are arranged in parallel on the bed (100) and are distributed along the sliding direction of the slide (200); wherein the reading heads of the first main grating ruler (1) and the first auxiliary grating ruler (2) can slide with the slide (200).

4. The measuring device for a deep hole drilling machine according to claim 3, characterized in that, The first measuring component also includes a first grating ruler bracket (4); The first grating ruler bracket (4) is disposed at the bottom of the slide (200); The first main grating ruler (1) and the first auxiliary grating ruler (2) are located on both sides of the first grating ruler bracket (4), and their reading heads are connected to the first grating ruler bracket (4).

5. The measuring device for a deep hole drilling machine according to claim 4, characterized in that, The first grating ruler bracket (4), the first main grating ruler (1) and the first auxiliary grating ruler (2) are all located between the gear (510) and a slider (210) at the bottom of the slide block (200).

6. The measuring device for a deep hole drilling machine according to claim 2, characterized in that, The second main grating ruler (3) is vertically disposed on the first side wall of the column (300), and its reading head is connected to the spindle box (400); wherein the first side wall of the column (300) faces the spindle box (400). The second auxiliary grating ruler is vertically disposed on the first side wall of the column (300), and its reading head is connected to the spindle box (400); or, the second auxiliary grating ruler is a circular grating ruler (5), and is used to detect the angular displacement of the lead screw (610) of the lead screw assembly of the spindle box (400). The processing module can convert the angular displacement detected by the circular grating ruler (5) into the displacement position of the spindle box (400).

7. The measuring device for a deep hole drilling machine according to claim 6, characterized in that, The second auxiliary grating ruler is a circular grating ruler (5); The second measuring component includes a second grating ruler support (6); The circular grating ruler (5) is mounted on the first end of the lead screw (610) via the second grating ruler bracket (6); wherein the first end of the lead screw (610) and the motor (620) of the lead screw assembly are located on the same side of the spindle box (400).

8. The measuring device for a deep hole drilling machine according to claim 6, characterized in that, The second main grating ruler (3) is located between the lead screw (610) and a slider on the first side wall of the column (300).

9. The measuring device for a deep hole drilling machine according to claim 1, characterized in that, The processing module is the processing unit in the CNC system of the deep hole drilling machine.

10. A deep hole drilling machine, comprising a measuring device, characterized in that, The measuring device is the measuring device for a deep hole drilling machine as described in any one of claims 1-9.

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