Tray positioning detection device and detection method for horizontal machining center

Abstract

This invention relates to the field of intelligent manufacturing technology and discloses a pallet positioning detection device and method for a horizontal machining center. The pallet positioning detection device includes: a detection device body, a clamping mechanism, and a measuring mechanism. The clamping mechanism is connected to the top of the detection device body and is used to connect to the spindle of the horizontal machining center. The measuring mechanism includes a first measuring component and a second measuring component disposed on the detection device body. The first measuring component is used to detect the radial dimension of the positioning cone of the pallet in a horizontal cross-section, and the second measuring component is used to detect the distance between the horizontal cross-section of the positioning cone and the rotation reference plane of the pallet. Based on the measurement principle that the distance from the reference plane to the cross-section of cones with the same volume size and radius relative to the rotation reference plane of the turntable is the same, this invention can quickly and reliably detect the positioning cone of the machining center, ensuring the accuracy requirements of the turntable positioning cone, thereby guaranteeing the performance and machining accuracy of the machining center.

Description

Technical Field

[0001] This invention relates to the field of intelligent manufacturing technology, and in particular to a pallet positioning detection device and detection method for a horizontal machining center. Background Technology

[0002] This section provides only background information relevant to this disclosure and is not necessarily prior art.

[0003] Horizontal machining centers are complex integrated mechanical, electrical, hydraulic, and pneumatic systems, mainly composed of a frame, automatic tool changer (with tool magazine), spindle system, pallet exchange system, B-axis rotary table, and other hydraulic, pneumatic, and electrical control (CNC) components. Most horizontal machining centers involve the exchange of two or more pallets. To ensure repeatable positioning after pallet exchange, the positioning cones of the exchanged pallets need to be measured.

[0004] The current measurement method is to directly measure the height of four points on the upper plane of the pallet relative to the B-axis rotation reference plane. This measurement method has poor detection accuracy, which leads to a decrease in the precision of the machining center. Summary of the Invention

[0005] The purpose of this invention is to at least solve the problem of poor accuracy in existing measurement methods, which leads to reduced precision in machining centers. This objective is achieved through the following technical solution:

[0006] A first aspect of the present invention provides a pallet positioning and detection device for a horizontal machining center, comprising:

[0007] The main body of the detection device;

[0008] A clamping mechanism, connected to the top of the main body of the detection device, is used to connect with the spindle of the horizontal machining center; and

[0009] The measuring mechanism includes a first measuring component and a second measuring component disposed on the main body of the detection device. The first measuring component is used to detect the radial dimension of the positioning cone of the tray in a horizontal cross section, and the second measuring component is used to detect the distance between the horizontal cross section of the positioning cone and the rotation reference plane of the tray.

[0010] The first measuring component includes a first measuring gauge, which is used to measure the distance from the cross section determined by the second measuring component to the rotation reference plane of the tray;

[0011] The second measuring component includes a plurality of second measuring gauges, which are connected to the bottom of the main body of the detection device. The measuring heads of the plurality of second measuring gauges are spaced apart circumferentially along the positioning cone of the tray and abut against the outer surface of the positioning cone.

[0012] The positioning detection device further includes an adjustment mechanism connected to the main body of the detection device. The adjustment mechanism includes a horizontal adjustment component and a vertical adjustment component. The horizontal adjustment component is used to adjust the position of the measuring mechanism in the horizontal direction, and the vertical adjustment component is used to adjust the position of the measuring mechanism in the vertical direction.

[0013] The vertical adjustment component includes:

[0014] The first adjustment axis is connected to the horizontal adjustment assembly;

[0015] The first sliding member is slidably connected to the first adjusting shaft;

[0016] The first adjusting component includes a first lead screw and a first adjusting handwheel. The first lead screw is coaxially connected to the first adjusting shaft, the first sliding component is connected to the first lead screw, and the first adjusting handwheel is connected to one end of the first lead screw.

[0017] The first measuring instrument is disposed on the first adjusting shaft, and a limiting plate is disposed on the first sliding member. The first sliding member is used to drive the limiting plate to move relative to the first measuring instrument, and the limiting plate is used to contact the first measuring instrument to limit the distance from the limiting plate to the rotation reference plane of the tray.

[0018] The horizontal adjustment component includes:

[0019] A leveling component, connected to the clamping mechanism, is used to level the measuring mechanism;

[0020] A first adjustment component, connected to the leveling component, is used to adjust the position of the measuring mechanism along a first horizontal direction;

[0021] The second adjustment component, connected to the first adjustment component, is used to adjust the position of the measuring mechanism along a second horizontal direction, wherein the first horizontal direction is perpendicular to the second horizontal direction.

[0022] The pallet positioning detection device for a horizontal machining center of the present invention comprises a clamping mechanism and a measuring mechanism. The measuring mechanism includes a first measuring component and a second measuring component disposed on the main body of the detection device. The first measuring component is used to detect the radial dimension of the positioning cone of the pallet in the horizontal cross section, and the second measuring component is used to detect the distance between the horizontal cross section of the positioning cone and the rotation reference plane of the pallet. During detection, the device is installed on the spindle of the machining center by means of the clamping mechanism, and the radial dimensions of the four positioning cones in the horizontal cross section and the distance between the horizontal cross section of the positioning cone and the rotation reference plane of the pallet are measured respectively. Based on the measurement principle that cones with the same volume and radius relative to the rotation reference plane of the turntable have the same distance from the reference plane, when the measured diameters of the positioning cones are equal and the distances from each positioning cone to the rotation reference plane of the turntable are respectively equal, it can be proven that each positioning cone is in a plane, thus ensuring the accuracy requirements of the turntable positioning cone. This invention allows for rapid and reliable detection of the positioning cones of the machining center, ensuring the accuracy requirements of the turntable positioning cones, thereby guaranteeing the performance and machining accuracy of the machining center.

[0023] In some embodiments of the present invention, the leveling component includes:

[0024] The first connecting plate is connected to the clamping mechanism;

[0025] An adjusting component is connected to the first connecting plate and threadedly connected to the first connecting plate.

[0026] A clamping member is connected to the first connecting plate and the second connecting plate, and the clamping member is used to clamp the first connecting plate and the second connecting plate.

[0027] In some embodiments of the present invention, the clamping mechanism includes a first clamping block and a second clamping block, both of which are provided with grooves, and the two grooves are arranged opposite to each other to form a clamping cavity, and the spindle is mounted in the clamping cavity.

[0028] Another aspect of the present invention provides a pallet positioning detection method for a horizontal machining center, wherein the pallet positioning detection method for a horizontal machining center utilizes a pallet positioning detection device for a horizontal machining center as described in any of the preceding claims, and the pallet positioning detection method for a horizontal machining center includes:

[0029] Obtain the radial dimension h1 of the cross section of the plurality of positioning cones on a preset horizontal plane, and obtain the distance H1 between the positioning cones located on the preset horizontal plane and the reference plane of the rotary table;

[0030] Compare the radial dimensions h1 of the cross sections of multiple positioning cones on a preset horizontal plane. If the values ​​of multiple h1 are the same, it is determined that the dimensions of the positioning cones meet the standard.

[0031] By comparing the distances H1 between multiple positioning cones located on the preset horizontal plane and the reference plane of the rotary table, if the increase values ​​of multiple H1 values ​​are the same, it is determined that the taper and posture of each positioning cone are consistent and there is no wear. Attached Figure Description

[0032] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0033] Figure 1 A schematic diagram of the pallet positioning and detection device for a horizontal machining center according to an embodiment of the present invention is shown. Figure 1 ;

[0034] Figure 2 A schematic diagram of the pallet positioning and detection device for a horizontal machining center according to an embodiment of the present invention is shown. Figure 2 ;

[0035] Figure 3 A schematic diagram illustrating the measurement of a pallet positioning and detection device for a horizontal machining center according to an embodiment of the present invention is shown.

[0036] Figure 4 A schematic flowchart of a pallet positioning and detection method for a horizontal machining center according to an embodiment of the present invention is shown.

[0037] The attached figures are labeled as follows:

[0038] 1. Clamping mechanism; 10. First clamping block; 11. Second clamping block; 12. Clamping cavity;

[0039] 20. First measuring instrument; 200. First measuring head; 21. Limiting plate;

[0040] 30. Second measuring instrument; 300. Second measuring head; 31. Support rod;

[0041] 4. Machine tool; 40. Spindle;

[0042] 5. Pallet; 50. Positioning cone;

[0043] 60. First connecting plate; 61. Adjusting screw; 62. Clamping bolt; 63. Spring; 64. Second connecting plate;

[0044] 70. First adjusting shaft; 71. First sliding member; 72. First lead screw; 73. First adjusting handwheel;

[0045] 80. Second adjusting shaft; 81. Second sliding member; 82. Second lead screw; 83. Second adjusting handwheel;

[0046] 90. Third adjusting shaft; 91. Third sliding component; 92. Third lead screw; 93. Third adjusting handwheel. Detailed Implementation

[0047] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0048] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0049] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0050] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations.

[0051] Most horizontal machining centers involve the exchange of two or more pallets. To ensure repeatability and accurate positioning between worktables and rotary tables after pallet exchange, machine tool manufacturers generally employ four-point or multi-point positioning. Four-point conical surface positioning involves pairing four outer conical surfaces with four inner conical surfaces, forming four coplanar points to guarantee repeatability and accuracy. This positioning method requires precise positional relationships between the mounting conical holes when machining the inner conical mounting holes. However, in actual production, the conical surfaces experience wear during worktable changes. The wear on the positioning cones varies, and when the hydraulic cylinder tightens, each pull pin experiences approximately 10kN of force, causing about 0.03mm of elastic deformation in a localized area of ​​the worktable. Since the workpiece is pre-clamped without stress, this deformation is reflected in the workpiece, causing dimensional deviations (e.g., cylindricity, roundness, flatness, parallelism, diameter, etc.) and consequently reducing the machining accuracy of the machine tool, thus affecting its overall performance.

[0052] In view of this, this embodiment provides a pallet positioning detection device for a horizontal machining center, which aims to detect the accuracy of the positioning cones by measuring the radial dimensions of the four positioning cones on the horizontal cross section and the distance between the horizontal cross section of the positioning cones and the rotation reference surface of the pallet, thereby solving the above-mentioned technical problems.

[0053] like Figures 1 to 3 As shown, according to an embodiment of the present invention, a pallet positioning detection device for a horizontal machining center is provided. The detection device includes: a detection device body, a clamping mechanism 1, and a measuring mechanism. The clamping mechanism 1 is connected to the top of the detection device body and is used to connect to the spindle 40 of the horizontal machining center. The measuring mechanism includes a first measuring component and a second measuring component disposed on the detection device body. The first measuring component is used to detect the radial dimension of the positioning cone of the pallet 5 in the horizontal cross section, and the second measuring component is used to detect the distance between the horizontal cross section of the positioning cone and the rotation reference plane of the pallet 5.

[0054] The pallet positioning detection device for a horizontal machining center of the present invention comprises a clamping mechanism 1 and a measuring mechanism. The measuring mechanism includes a first measuring component and a second measuring component disposed on the main body of the detection device. The first measuring component is used to detect the radial dimension of the positioning cone 5 on the horizontal cross section, and the second measuring component is used to detect the distance between the horizontal cross section of the positioning cone and the rotation reference plane of the pallet 5. During detection, the device is mounted onto the spindle 40 of the machining center through the clamping mechanism 1, and the radial dimensions of the four positioning cones 50 on the horizontal cross section and the distance between the horizontal cross section of the positioning cone and the rotation reference plane of the pallet 5 are measured respectively. Based on the measurement principle that cones with the same volume and radius relative to the rotation reference plane of the turntable have the same distance from the reference plane, when the measured diameters of the positioning cones 50 are equal and the distances of each positioning cone 50 to the rotation reference plane of the turntable are respectively equal, it can be proven that each positioning cone 50 is in a plane, ensuring the accuracy requirements of the turntable positioning cones 50. This allows for rapid and reliable detection of the positioning cones 50 of the machining center, ensuring the accuracy requirements of the positioning cones 50, thereby guaranteeing the performance and machining accuracy of the machining center.

[0055] In some embodiments of the present invention, the clamping mechanism 1 includes a first clamping block 10 and a second clamping block 11. Both the first clamping block 10 and the second clamping block 11 are provided with grooves. The two grooves are arranged opposite to each other to form a clamping cavity 12. The main shaft 40 is installed in the clamping cavity 12. Specifically, the first clamping block 10 and the second clamping block 11 are arranged vertically from top to bottom. Both the first clamping block 10 and the second clamping block 11 are provided with V-shaped grooves, which are arranged opposite each other. The clamping mechanism 1 is also provided with locking bolts. There are two locking bolts, which are spaced apart on the top of the first clamping block 10 and are threadedly connected to the first clamping block 10 and the second clamping block 11. When measuring, the spindle 40 of the machine tool 4 extends into the clamping cavity 12. The locking bolts are used to clamp and fix the spindle 40 with the first clamping block 10 and the second clamping block 11, so that the whole device is installed on the spindle 40, which facilitates the measurement of the positioning cone 50. The design of the V-shaped grooves can stably clamp the whole device on the spindle 40 of the machine tool 4, effectively utilizing the structure of the machine tool 4 itself for positioning and ensuring measurement accuracy.

[0056] In some embodiments of the present invention, the positioning detection device further includes an adjustment mechanism disposed on the main body of the detection device. The adjustment mechanism includes a horizontal adjustment component and a vertical adjustment component. The horizontal adjustment component is used to adjust the position of the measuring mechanism along the horizontal direction, and the vertical adjustment component is used to adjust the position of the measuring mechanism along the vertical direction. By setting the horizontal adjustment mechanism, the horizontal position of the measuring mechanism can be adjusted, and the vertical adjustment mechanism can adjust the vertical position of the measuring mechanism, allowing for flexible, time-saving, and labor-saving adjustment of the measuring mechanism, thus ensuring the accuracy of the measurement.

[0057] In some embodiments of the present invention, the vertical adjustment assembly includes a first adjustment shaft 70, a first sliding member 71, and a first adjusting member. The first adjustment shaft 70 is connected to the horizontal adjustment assembly, the first sliding member 71 is slidably connected to the first adjustment shaft 70, and the first adjusting member includes a first lead screw 72 and a first adjusting handwheel 73. The first lead screw 72 is coaxially connected to the first adjustment shaft 70, the first sliding member 71 is connected to the first lead screw 72, and the first adjusting handwheel 73 is connected to one end of the first lead screw 72. Specifically, the first adjustment shaft 70 is vertically disposed at the bottom of the horizontal adjustment assembly, the first lead screw 72 is coaxially connected to the first adjustment shaft 70 in the vertical direction, the first sliding member 71 includes a first slide table, the first slide table is connected to the slider of the first lead screw 72, so that the first slide table can be slidably disposed on the first adjustment shaft 70 in the vertical direction, and the first adjusting handwheel 73 is disposed at the bottom of the first lead screw 72 and rotatably connected to the first lead screw 72. When adjusting the vertical position, the first adjusting handwheel 73 is rotated, which drives the first lead screw 72 connected to it to rotate, so that the first slide table connected to the slider of the first lead screw 72 slides along the first adjusting shaft 70. This allows for flexible, time-saving, and labor-saving adjustment of the vertical position of the measuring mechanism, ensuring the accuracy of the measurement.

[0058] In some embodiments of the present invention, the horizontal adjustment assembly includes a leveling assembly, a first adjustment assembly, and a second adjustment assembly. The leveling assembly is connected to the clamping mechanism 1 and is used to level the measuring mechanism. The first adjustment assembly is connected to the leveling assembly and is used to adjust the position of the measuring mechanism along a first horizontal direction. The second adjustment assembly is connected to the first adjustment assembly and is used to adjust the position of the measuring mechanism along a second horizontal direction. The first horizontal direction and the second horizontal direction are perpendicular to each other. By setting the leveling assembly, the entire device can be leveled flexibly, quickly, and effortlessly, making the entire device parallel to the spindle 40 of the machining center and parallel to the Y-axis of the machining center (the Y-axis of the machining center is the vertical guide rail of the machining center). The device is positioned by the spindle 40 and the Y-axis of the machining center, and the accuracy of the spindle 40 and the Y-axis of the machining center is used to reduce errors. The first and second adjustment assemblies are used to adjust the measuring assembly in the horizontal direction to ensure the accuracy of the measurement.

[0059] In some embodiments of the present invention, the leveling assembly includes a first connecting plate 60, an adjusting member, and a clamping member. The first connecting plate 60 is connected to the clamping mechanism 1. The adjusting member is disposed on the first connecting plate 60 and threadedly connected to the first connecting plate 60. The clamping member is connected to the first connecting plate 60 and is used to clamp the first connecting plate 60. Specifically, the bottom of the second clamping block 11 is horizontally connected to a second connecting plate 64, and a first connecting plate 60 is horizontally disposed on the second connecting plate 64. The first connecting plate 60 and the second connecting plate 64 are rectangular. The adjusting component includes multiple adjusting screws. In this embodiment, there are four horizontal screws. The four adjusting screws are evenly spaced on the first connecting plate 60. The device is leveled by adjusting the screws. Four connecting rods are respectively disposed at the four corners of the bottom of the second connecting plate 64. The other end of the connecting rods is connected to the first adjusting component. The clamping component includes a clamping bolt 62 and a spring 63. The spring 63 is sleeved on the outside of the clamping bolt 62 and disposed between the clamping bolt 62 and the first connecting plate 60. The clamping bolt 62 is threadedly connected to the first connecting plate 60 and the second connecting plate 64. During installation, the device is mounted on the spindle 40 of the machining center using the first clamping block 10 and the second clamping block 11. Then, the device is leveled using the adjusting screws so that the first adjusting shaft 70 is parallel to the Y-axis of the machining center. Next, the clamping bolt 62 is tightened to press and fix the first connecting plate 60 and the second connecting plate 64. Finally, the locking bolts are used to clamp and fix the spindle 40 with the first clamping block 10 and the second clamping block 11, so that the detection device is firmly connected to the machining center.

[0060] In this embodiment, the first adjustment assembly includes a second adjustment shaft 80, a second sliding member 81, and a second adjustment component. The second adjustment shaft 80 is horizontally positioned at the end of the connecting rod away from the second connecting plate 64. The second adjustment component includes a second lead screw 82 and a second adjustment handwheel 83. The second lead screw 82 is coaxially connected to the second adjustment shaft 80 along a first horizontal direction. The second sliding member 81 includes a second slide table, which is connected to the slider of the second lead screw 82, allowing the second slide table to slide along the second adjustment shaft 80 in the first horizontal direction. The second adjustment handwheel 83 is located at one end of the second lead screw 82 and is rotatably connected to it. When adjusting the position in the first horizontal direction, rotating the second adjustment handwheel 83 rotates the second lead screw 82, causing the second slide table connected to the slider of the second lead screw 82 to slide along the second adjustment shaft 80. This allows for flexible, time-saving, and labor-saving adjustment of the measuring mechanism's position in the first horizontal direction, ensuring measurement accuracy.

[0061] In this embodiment, the second adjustment assembly includes a third adjustment shaft 90, a third sliding member 91, and a third adjusting component. The third adjustment shaft 90 is horizontally disposed at the bottom of the second slide table. The third adjusting component includes a third lead screw 92 and a third adjusting handwheel 93. The third lead screw 92 is coaxially connected to the third adjustment shaft 90 along the second horizontal direction. The third sliding member 91 includes a third slide table, which is connected to the slider of the third lead screw 92, allowing the third slide table to slide along the third adjustment shaft 90 in the second horizontal direction. The third adjusting handwheel 93 is disposed at one end of the third lead screw 92 and is rotatably connected to the third lead screw 92. When adjusting the position in the second horizontal direction, rotating the third adjusting handwheel 93 drives the connected third lead screw 92 to rotate, causing the third slide table connected to the slider of the third lead screw 92 to slide along the third adjustment shaft 90. This allows for flexible, time-saving, and labor-saving adjustment of the measuring mechanism's position in the second horizontal direction, ensuring measurement accuracy.

[0062] In some embodiments of the present invention, the first measuring component includes a first measuring gauge 20, which is used to measure the distance from a cross section determined by the second measuring component to the rotation reference plane of the tray 5. Specifically, the first measuring gauge 20 is connected to a first adjusting shaft 70, and a limiting plate 21 is provided on a first slide in the horizontal direction. The limiting plate 21 slides relative to the first measuring gauge 20 along the first adjusting shaft 70 via the first slide. The first measuring gauge 20 includes a main body and a first measuring head 200. The first measuring head 200 is vertically disposed on the top of the main body of the first measuring gauge 20. The limiting plate 21 is used to contact and cooperate with the first measuring gauge 20 to limit the distance from the limiting plate 21 to the rotation reference plane of the tray 5.

[0063] In some embodiments of the present invention, the second measuring component includes a plurality of second measuring gauges 30, which are disposed at the bottom of the main body of the detection device. The measuring heads of the second measuring gauges 30 are arranged circumferentially along the positioning cone 50 of the tray 5 and abut against the outer surface of the positioning cone 50. Specifically, there are four second measuring gauges 30. A support rod 31 is provided vertically at the bottom of the first slide, and a mounting frame is provided at the bottom of the support rod 31. The four second measuring gauges 30 are evenly spaced circumferentially on the mounting frame. Each second measuring gauge 30 includes a second measuring gauge 30 body and a second measuring head 300. During measurement, all four second measuring heads 300 are in contact with the outer surface of the positioning cone 50.

[0064] like Figure 4 As shown, a second aspect of the present invention provides a pallet positioning detection method for a horizontal machining center. The pallet positioning detection method for a horizontal machining center utilizes a pallet positioning detection device as described in any of the preceding claims. The pallet positioning detection method for a horizontal machining center includes:

[0065] S100: Obtain the radial dimension h1 of the cross-section of the plurality of positioning cones on a preset horizontal plane, and obtain the distance H1 between the positioning cones located on the preset horizontal plane and the reference plane of the rotary table. Specifically, during measurement, the detection device is mounted as a whole on the spindle 40 of the machining center. The detection device is moved to a suitable position above the positioning cone 50 by adjusting the machining center. Then, the position of the limiting plate 21 is adjusted by the first adjusting handwheel 73 so that the limiting plate 21 contacts the first measuring gauge 20 and the first measuring gauge 20 is zeroed. The Z-axis of the machining center is operated so that the four second measuring gauges 30 contact the positioning cone 50 and the four second measuring gauges 30 are zeroed. Then, the reading of the first measuring gauge 20 is read and recorded as h1. Then, raise the second measuring gauge 30 by approximately 30mm using the first adjusting handwheel 73 to prevent interference between the machine tool 4's turntable and the measuring device during rotation. Operate the machine tool 4 to rotate the turntable 90°, and lower the second measuring gauge 30 using the first adjusting handwheel 73 until all four second measuring gauges 30 contact the positioning cone 50. Zero the four second measuring gauges 30 by adjusting the second adjusting handwheel 83 and the third adjusting handwheel 93. At this point, read the reading of the first measuring gauge 20 and record it as h2. Repeat the above steps to measure the remaining two positioning cones 50, and read the readings of the first measuring gauge 20 respectively, recording them as h3 and h4.

[0066] After the device is fixed, the spindle 40 of the machining center remains stationary, meaning the height H from the axis of the spindle 40 to the mounting plane of the positioning cone 50 on the exchange tray 5 remains constant. When the reading of the first measuring gauge 20 is zero, the distance from the axis of the spindle 40 to the lower surface of the limit plate 21 after the first measuring gauge 20 is zeroed is a fixed value, denoted as A0. At this time, the reading of the first measuring gauge 20 is h. When the reading of the first measuring gauge 20 changes, then A = A0 + h. The distance from the lower surface of the limit plate 21 to the section of the positioning cone 50 determined by the second measuring gauge 30 is a fixed value, B. When the size of the positioning cone 50 is within the standard, the distance from the section determined by the four gauges to the mounting surface of the positioning cone 50 is a fixed value. The machining datum of the mounting plane of the positioning cone 50 and the mounting surface of the exchange tray 5 are unified, so the distance between the two positioning surfaces is a fixed value. If the size of the positioning cone 50 changes, that is, the distance from the section of the positioning cone 50 to the mounting plane of the exchange tray 5 becomes a variable, denoted as D.

[0067]

[0068] Combining the above equations, we can obtain: .

[0069] S200. Compare the radial dimensions h1 of the cross-sections of multiple positioning cones on a preset horizontal plane. If the values ​​of multiple h1 are the same, it is determined that the dimensions of the positioning cone 50 conform to the standard. Specifically, if h1=h2=h3=h4, it can be considered that the dimensions of the positioning cone 50 conform to the standard.

[0070] S300. Compare multiple H1 values. If the increase in the values ​​of multiple H1 values ​​is the same, then it is determined that the posture of each positioning cone 50 is consistent and there is no wear. Specifically, when measuring the posture of each positioning cone 50, the second measuring heads 300 of four second measuring gauges 30 are brought into contact with the upper end of the cone surface, and the first measuring gauge 20 is brought into contact with the limit plate 21 and zeroed. The first sliding table is moved vertically downward along the first adjusting shaft 70 by the first adjusting handwheel 73. When the four second measuring heads 300 move to the lower side of the positioning cone 50, the values ​​are read. The wear condition of the positioning cone 50 and the posture of the positioning cone 50 (the case where the axis of the positioning cone 50 is parallel to the axis of B) are judged based on the increase in the readings of the four second measuring gauges 30. From the beginning to the end of the measurement of a positioning cone 50, if the difference in the readings of the four second measuring gauges 30 is the same, it can be proved that the positioning cone 50 is not worn. If the increase in the readings of the second measuring gauges 30 of the four positioning cones 50 is consistent, it can be determined that the posture is correct and the positioning cone 50 is not worn. If the axes of the positioning cones 50 are not parallel to each other, the mounting surface of the positioning cone 50 can be scraped to repair it.

[0071] According to the above formula It can be seen that when the readings of the first measuring table 20 are the same four times, H, A0, and B are constant values, and h+D is a constant value. If h1, h2, h3, and h4 are the same in the four readings, that is, the distance D from the cross section of the four positioning cones 50 determined by the four second measuring tables 30 to the mounting plane of the exchange tray 5 is the same, it can be considered that the distance from the cross section to the mounting surface of the positioning cone 50 is equal. The distance from the cross section of the same radius of the cone with the same taper to the bottom surface is a constant value. Therefore, if the cross section is the same and the distance is the same, it can be considered that the taper of the positioning cones 50 is the same.

[0072] The following method can also be used when measuring the posture and taper of the positioning cone 50: Make the second measuring heads 300 of the four second measuring gauges 30 contact the middle part of the positioning cone 50 and zero them; make the first measuring gauge 20 contact the limit plate 21 and zero it; move the first slide upwards along the first adjustment axis 70 using the first adjusting handwheel 73 to avoid interference between the machining center turntable rotation and the detection device; at this time, the machine tool 4 turntable can be rotated 90°; move the first slide downwards along the first adjustment axis 70 using the first adjusting handwheel 73; then manually operate the second adjusting handwheel 83 to move the second slide horizontally along the second adjustment axis 80; and move the third slide horizontally along the third adjustment axis 90 using the third adjusting handwheel 93. Adjust the readings of the four second measuring gauges 30 to zero. If the readings of the four second measuring gauges 30 can be zeroed when measuring each positioning cone 50, it can be proven that the posture and taper of each positioning cone 50 are consistent. The principle of the above measurement method is as follows: Each measurement can measure four diameters of one positioning cone 50. If the measuring device can zero the readings of all four second measuring gauges 30, then the four diameters measured by the four second measuring gauges 30 are equal, and the distances between each diameter are equal, proving that the taper of the positioning cones 50 is consistent. At this point, the reading of the first measuring gauge 20 is the height difference between two positioning cones 50. This process can be repeated to measure the remaining positioning cones 50. The height difference between each positioning cone 50 is adjusted by grinding the adjusting shims of the positioning cones 50.

[0073] The pallet positioning detection method of the horizontal machining center of the present invention can quickly eliminate the problem of decreased machining center accuracy caused by wear of the positioning cone 50. At the same time, it can be used for periodic detection of the positioning accuracy of the cone surface of the machining center exchange table, which greatly reduces the measurement time and downtime detection time.

[0074] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A pallet positioning and detection device for a horizontal machining center, characterized in that, include: The main body of the detection device; A clamping mechanism is connected to the top of the main body of the detection device, and the clamping mechanism is used to connect to the spindle of the horizontal machining center; as well as The measuring mechanism includes a first measuring component and a second measuring component disposed on the main body of the detection device. The first measuring component is used to detect the radial dimension of the positioning cone of the tray in a horizontal cross section. The first measuring component includes a first measuring gauge, which is used to measure the distance from the cross section determined by the second measuring component to the rotation reference plane of the tray; The second measuring component includes a plurality of second measuring gauges, which are connected to the bottom of the main body of the detection device. The measuring heads of the plurality of second measuring gauges are spaced apart circumferentially along the positioning cone of the tray and abut against the outer surface of the positioning cone. The positioning detection device further includes an adjustment mechanism connected to the main body of the detection device. The adjustment mechanism includes a horizontal adjustment component and a vertical adjustment component. The horizontal adjustment component is used to adjust the position of the measuring mechanism in the horizontal direction, and the vertical adjustment component is used to adjust the position of the measuring mechanism in the vertical direction. The vertical adjustment component includes: The first adjustment axis is connected to the horizontal adjustment assembly; The first sliding member is slidably connected to the first adjusting shaft; The first adjusting component includes a first lead screw and a first adjusting handwheel. The first lead screw is coaxially connected to the first adjusting shaft, the first sliding component is connected to the first lead screw, and the first adjusting handwheel is connected to one end of the first lead screw. The first measuring instrument is disposed on the first adjusting shaft, and a limiting plate is disposed on the first sliding member. The first sliding member is used to drive the limiting plate to move relative to the first measuring instrument, and the limiting plate is used to contact the first measuring instrument to limit the distance from the limiting plate to the rotation reference plane of the tray. The horizontal adjustment component includes: A leveling component, connected to the clamping mechanism, is used to level the measuring mechanism; A first adjustment component, connected to the leveling component, is used to adjust the position of the measuring mechanism along a first horizontal direction; The second adjustment component, connected to the first adjustment component, is used to adjust the position of the measuring mechanism along a second horizontal direction, wherein the first horizontal direction is perpendicular to the second horizontal direction.

2. The pallet positioning and detection device for a horizontal machining center according to claim 1, characterized in that, The leveling component includes: The first connecting plate is connected to the clamping mechanism; An adjusting component is connected to the first connecting plate and is threadedly connected to the first connecting plate. A clamping element is connected to the first connecting plate, and the clamping element is used to clamp the first connecting plate.

3. The pallet positioning and detection device for a horizontal machining center according to claim 1, characterized in that, The clamping mechanism includes a first clamping block and a second clamping block. Both the first clamping block and the second clamping block are provided with grooves. The two grooves are arranged opposite each other to form a clamping cavity. The spindle is installed in the clamping cavity.

4. A method for pallet positioning detection in a horizontal machining center, characterized in that, The pallet positioning detection method for the horizontal machining center utilizes the pallet positioning detection device for the horizontal machining center as described in any one of claims 1 to 3, and the pallet positioning detection method for the horizontal machining center includes: Obtain the radial dimension h1 of the cross section of the plurality of positioning cones on a preset horizontal plane, and obtain the distance H1 between the positioning cones located on the preset horizontal plane and the reference plane of the rotary table; Compare the radial dimensions h1 of the cross sections of multiple positioning cones on a preset horizontal plane. If the values ​​of multiple h1 are the same, it is determined that the dimensions of the positioning cones meet the standard. By comparing multiple H1 values, if the increase in the values ​​of multiple H1 values ​​is the same, it is determined that the taper and orientation of each positioning cone are consistent and there is no wear.

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