CN114734309B - Cutter core thickness measuring method, device, equipment and readable storage medium - Google Patents
Cutter core thickness measuring method, device, equipment and readable storage medium Download PDFInfo
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- CN114734309B CN114734309B CN202210442898.2A CN202210442898A CN114734309B CN 114734309 B CN114734309 B CN 114734309B CN 202210442898 A CN202210442898 A CN 202210442898A CN 114734309 B CN114734309 B CN 114734309B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B51/00—Arrangements for automatic control of a series of individual steps in grinding a workpiece
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Abstract
A method, a device, equipment and a readable storage medium for measuring the thickness of a cutter core, wherein the measuring method comprises the following steps: the control probe touches the cutter from the preset position so as to obtain a touch position, then the control probe returns to the preset position, the cutter is rotated, and the control probe returns to the step of touching the cutter from the preset position so as to obtain the touch position until the target touch position used for representing the minimum core thickness is obtained, the core thickness radius is obtained, thus, the contact type measurement is adopted, the target touch position is finally reached through the cyclic detection, the core thickness radius is further obtained, the end teeth of the cutter do not need to be ground, and the special measuring instrument is clamped for measurement, and the measuring process is simple.
Description
Technical Field
The present disclosure relates to the field of tool measurement technologies, and in particular, to a method, an apparatus, a device, and a readable storage medium for measuring a thickness of a tool core.
Background
The cutter belongs to a vulnerable apparatus in machining production, the service life of the cutter can be prolonged by grinding the cutter, and the cost is saved. At present, a numerical control tool grinding machine is gradually adopted at home and abroad to replace manual grinding, but cutter parameters are required to be measured before and after grinding by the numerical control tool grinding machine so as to ensure the accuracy of the calculated grinding track of the grinding wheel and ensure the accuracy and the rationality of the structural parameters of the cutter after grinding.
The current measurement of the core thickness of the peripheral tooth chip flute of the cutter generally adopts non-contact measurement, and the measurement method not only needs to grind the end teeth of the cutter flat, but also needs to be clamped on a special measuring instrument for measurement, and the measurement process is complicated.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a tool core thickness measuring method, apparatus, device, and readable storage medium that can simplify the core thickness measuring process.
A method of measuring tool core thickness, the method comprising:
controlling the measuring head to touch the cutter from a preset position to obtain a touch position;
and controlling the measuring head to return to the preset position, rotating the cutter, and returning to the step of controlling the measuring head to touch the cutter from the preset position to obtain a touch position until a target touch position for representing the minimum core thickness is obtained to obtain the core thickness radius.
In one embodiment, after the touch position is obtained, the method further includes determining a distance between the touch position and a reference position;
the obtaining the target touch position for representing the minimum core thickness to obtain the core thickness radius comprises the following steps:
if the current distance between the touch position and the reference position is larger than the distance between the last touch position and the reference position, the last touch position is used as the target touch position, and the distance between the last touch position and the reference position is used as the core thickness radius; the reference position is located on the axis of the cutter, and a straight line where a connecting line with the preset position is located is perpendicular to the axis of the cutter.
In one embodiment, the determining the distance between the touch location and the reference location includes:
acquiring touch coordinates of the touch position under a target coordinate system;
acquiring a reference coordinate of a reference position in the target coordinate system;
and determining the distance between the touch position and the reference position according to the difference value between the touch coordinate and the reference coordinate.
In one embodiment, the preset positions include a first preset position and a second preset position, the distance between the first preset position and the reference position is within a preset distance range, the preset distance range is a distance range formed by the distance between the distance in the chip pocket of the cutter and the reference position, the distance between the second preset position and the reference position is greater than the outer edge radius of the cutter, and a straight line where a connecting line of the second preset position and the first preset position is located is perpendicular to and intersects with the axis of the cutter;
the control head touches the cutter from a preset position and comprises:
controlling the measuring head to move from the second preset position to the first preset position;
in the advancing process, if the measuring head is touched with the cutter, the measuring head is controlled to return to the second preset position, the cutter is rotated, and the step of controlling the measuring head to advance from the second preset position to the first preset position is returned until the first preset position falls into a chip pocket of the cutter and the measuring head reaches the first preset position;
Controlling the measuring head to touch the cutter from the first preset position;
the controlling the probe to return to the preset position comprises the following steps:
and controlling the measuring head to return to the first preset position.
In one embodiment, before returning to the step of controlling the travel of the stylus from the second preset position to the first preset position, the method further comprises:
acquiring the rotated angle of the cutter;
and if the rotated angle reaches an angle threshold, adjusting the second preset position to increase the distance between the second preset position and the first preset position.
In one of the embodiments of the present invention,
the controlling the measuring head to touch the cutter from the first preset position comprises the following steps:
rotating the cutter in a first direction until the measuring head touches the cutter;
rotating the tool in a second direction to separate the probe from the tool; wherein the second direction is opposite to the first direction;
controlling the measuring head to touch the cutter rotated in the second direction from the first preset position;
the cutter core thickness measuring method further comprises the following steps:
and rotating the cutter in the second direction under the condition that the measuring head is controlled to return to the first preset position.
In one embodiment, the method further comprises:
rotating the tool at a first preset angle under the condition of controlling the gauge head to return to the first preset position; and under the condition that the measuring head is controlled to return to the second preset position, rotating the cutter at a second preset angle, wherein the first preset angle is smaller than the second preset angle.
A tool core thickness measurement device, the device comprising:
the first control module is used for controlling the measuring head to touch the cutter from a preset position to obtain a touch position;
and the second control module is used for controlling the measuring head to return to the preset position, rotating the cutter and returning to the step of controlling the measuring head to touch the cutter from the preset position to obtain the touch position until the target touch position for representing the minimum core thickness is obtained, so as to obtain the core thickness radius.
A tool core thickness measurement device comprising a memory storing a computer program and a processor implementing the steps of any one of the methods described above when the computer program is executed.
A computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method of any of the preceding claims.
According to the embodiment of the invention, the touch position is obtained by controlling the measuring head to touch the cutter from the preset position, then the measuring head is controlled to return to the preset position, the cutter is rotated, and the step of controlling the measuring head to touch the cutter from the preset position is returned until the target touch position for representing the minimum core thickness is obtained, so that the core thickness radius is obtained, the contact type measurement is adopted, the final reaching of the target touch position is achieved through cyclic probing, the core thickness radius is further obtained, the end teeth of the cutter do not need to be ground, and the measuring instrument is clamped for measurement, and the measuring process is simple.
Drawings
FIG. 1 is a flow chart of a method for measuring thickness of a tool core according to an embodiment of the present disclosure;
FIG. 2 is a schematic cross-sectional view of a tool according to an embodiment of the present disclosure;
FIG. 3 is a schematic view of a tool according to an embodiment of the present application in a target coordinate system;
FIG. 4 is a schematic cross-sectional view of a tool according to an embodiment of the present application;
FIG. 5 is a schematic cross-sectional view of a tool according to another embodiment of the disclosure;
FIG. 6 is a schematic cross-sectional view of a tool according to another embodiment of the disclosure;
FIG. 7 is a schematic cross-sectional view of a tool according to another embodiment of the disclosure;
FIG. 8 is a block diagram of a tool core thickness measurement device according to an embodiment of the present application;
fig. 9 is an internal structural view of a tool core thickness measuring apparatus according to an embodiment of the present application.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without undue burden, are within the scope of the present application.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), if the specific posture is changed, the directional indicators correspondingly change, and the connection may be a direct connection or an indirect connection.
In addition, descriptions such as those related to "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated in this application. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be regarded as not exist and not within the protection scope of the present application.
Fig. 1 is a flow chart of a method for measuring a thickness of a tool core according to an embodiment, as shown in fig. 1, the method includes steps S110 to S120.
Step S100, the control probe touches the cutter from a preset position to obtain a touch position.
The cross-sectional structure of the cutter 101 is shown with reference to fig. 2, wherein the region a is the peripheral edge portion of the cutter 101, the region B is the end edge portion of the cutter 101, the region C is the inner core of the cutter 101, and the outer edge radius of the cutter 101 is R. The preset positions may include positions outside the cutter 101, i.e., at a distance from the axis of the cutter 101 greater than the outer edge radius R of the cutter 101, such as position a in the figure; the preset positions may also include a position having a distance to the axis of the tool 101 equal to the radius R of the outer edge of the tool 101, such as position b in the figure; the preset positions may also include positions in the flutes of the tool 101, i.e. at a distance from the axis of the tool 101 which is smaller than the outer edge radius R of the tool 101 and larger than the core thickness radius of the inner core of the tool 101, e.g. position c in the figure. The orthographic projection of the preset position on the cutter 101 is located at the peripheral edge portion a of the cutter 101.
It will be understood that in the process of controlling the stylus 102 to touch the tool 101 from the preset position, the stylus 102 is controlled to travel from the preset position to the axis direction of the tool 101 until the stylus 102 touches the tool 101, wherein the travel direction of the stylus 102 is perpendicular to the axis of the tool 101. In one embodiment, a target position located in the inner core of the tool 101 may be set, wherein a line where the target position and the preset position are connected is perpendicular to the axis of the tool 101, and the probe 102 is controlled to travel from the preset position to the target position, so that the probe travels toward the axis of the tool 101 until touching the tool 101; wherein the target location may be located on the axis of the tool 101.
Step S120, the control probe 102 returns to the preset position, rotates the tool 101, and returns to the step of controlling the probe 102 to touch the tool 101 from the preset position to obtain the touch position, until the target touch position for representing the minimum core thickness is obtained, and the core thickness radius is obtained.
It will be appreciated that the core thickness is the diameter of the inner core of the tool 101, and each time the stylus 102 is controlled to touch the tool 101 from a predetermined position, the touch position obtained can be used to characterize the core thickness of the tool 101. The core thickness corresponding to the deepest part of the chip flute of the cutter 101 is the smallest for the whole cutter 101, and the core thickness radius can be obtained according to the position. By continuously rotating the cutter 101 and synchronously penetrating the cutter 101, the measuring head 102 finally reaches the deepest part of the chip pocket of the cutter 101 and touches the cutter 101, and the touch position at the moment is the target touch position. Therefore, by continuously rotating the cutter 101 and synchronously controlling the measuring head 102 to touch the cutter 101 from the preset position until the measuring head is detected to the deepest part of the chip pocket of the cutter 101, namely the target touch position, the core thickness radius can be obtained.
In an alternative embodiment, a target position may be set, where a line between the target position and the preset position is perpendicular to the axis of the cutter 101, and the target position may be set to have a distance from the axis of the cutter 101 greater than the radius of the outer edge of the cutter 101, where the target touch position for representing the minimum core thickness is the touch position with the largest distance from the target position in each touch position; the target location may also be set to be located within the core of the tool 101, for example, may be located on the axis of the tool 101, where the target touch location used to characterize the minimum core thickness is the touch location with the smallest distance from the target location among the touch locations.
Wherein, considering that the deepest part of the chip flute of the tool 101 is narrower, the radius of the contact portion of the gauge head 102 can be set as small as possible, and in an alternative embodiment, can be set to be infinitely close to 0, thereby improving the measurement accuracy of the core thickness radius.
According to the embodiment of the invention, the touch position is obtained by controlling the measuring head 102 to touch the cutter 101 from the preset position, then controlling the measuring head 102 to return to the preset position, rotating the cutter 101, and returning to the step of controlling the measuring head 102 to touch the cutter 101 from the preset position until the target touch position for representing the minimum core thickness is obtained, and the core thickness radius is obtained.
In one embodiment, after the touch position is obtained, the measurement method further includes determining a distance between the touch position and the reference position; obtaining a target touch location for characterizing a minimum core thickness, resulting in a core thickness radius, comprising: if the distance between the current touch position and the reference position is larger than the distance between the last touch position and the reference position, the last touch position is used as a target touch position, and the distance between the last touch position and the reference position is used as a core thickness radius; the reference position is located on the axis of the cutter 101, and a line connecting the reference position and the preset position is perpendicular to the axis of the cutter 101.
The reference position is located on the axis of the cutter 101, and a line connecting the reference position and the preset position is perpendicular to the axis of the cutter 101, so that the distance between the touch position and the reference position is the distance between the touch position and the axis of the cutter 101, and can be used for representing the core thickness. After each time the measuring head 102 is controlled to touch the cutter 101 to obtain the touch position, the distance between the touch position and the reference position can be further obtained to be used for representing the core thickness. In the process of penetrating into the deepest part of the chip flute of the tool 101, the distance between the touch position and the reference position of the measuring head 102 is smaller and smaller, the represented core thickness is smaller and smaller until reaching the deepest part of the chip flute of the tool 101, the core thickness is minimum, and the minimum core thickness is obtained. At this time, if the tool 101 is continuously rotated and the gauge head 102 is controlled to touch the tool 101 again, the core thickness represented by the distance between the touch position and the reference position is larger than the minimum core thickness. Therefore, when the current core thickness is greater than the previous core thickness, that is, the distance between the current touch position and the reference position is greater than the distance between the previous touch position and the reference position, it indicates that the touch position of the measuring head 102 and the tool 101 in the previous touch process is the deepest chip flute of the tool 101. The touch process of the gauge head 102 to the tool 101 from the preset position is taken as a touch process, the current touch position is the touch position of the gauge head 102 and the tool 101 in the current touch process, and the previous touch position is the touch position of the gauge head 102 and the tool 101 in the previous touch process.
In one embodiment, determining the distance between the touch location and the reference location includes: acquiring touch coordinates of a touch position under a target coordinate system; obtaining a reference coordinate of the reference position in a target coordinate system; and then determining the distance between the touch position and the reference position according to the difference value between the touch coordinate and the reference coordinate.
It will be appreciated that a target coordinate system under the tool 101 can be established according to the formula of the distance between two points of the three-dimensional coordinates, i.e
The distance between the two positions can be obtained. In one embodiment, the origin O of the target coordinate system may be set at the end of the end edge of the tool 101, the first coordinate axis being located on the axis of the tool 101, and the second coordinate axis being located on the plane on which the axis of the tool 101 and the predetermined position lie. Taking the first coordinate axis as the Z axis and the second coordinate axis as the X axis as an example, as shown in fig. 3, taking the preset position a (X1, y1, Z1) as an example, the preset position a is located on the XZ plane, when the measuring head 102 moves from the preset position a to the tool 101, the measuring head moves on the XZ plane, the touch position is also located on the XZ plane, the reference position is located on the Z axis, the distance between the reference position and the touch position is the difference between the X axis coordinate and the X coordinate of the touch position, the X axis coordinate of the reference position is 0, and the distance between the reference position and the touch position is the X axis coordinate value of the touch position. Thus, establishing an appropriate target coordinate system may simplify the core thickness calculation process, and thus the core thickness radius calculation process.
Specifically, in the process of controlling the measuring head 102 to touch the cutter 101 from the preset position, the coordinate of the reference position can be defined, then the measuring head 102 is controlled to travel towards the coordinate of the reference position, the coordinate of the touch position is acquired after touching with the preset position, then the distance is determined according to the coordinate of the touch position and the coordinate of the reference position, the first round of touch process is completed, then the measuring head 102 is controlled to return to the preset position and rotate the cutter 101, then the measuring head 102 is controlled to travel towards the coordinate of the reference position from the preset position again, the coordinate of the touch position is acquired, and the multiple rounds of touch processes are circulated until the distance for representing the minimum core thickness, namely the core thickness radius is acquired. Wherein after obtaining the core thickness radius, the diameter of the inner core of the cutter 101, i.e. the core thickness of the cutter 101, can be further obtained.
When the distance between the current touch position and the reference position is larger than the distance between the last touch position and the reference position, the last touch position is used as the target touch position, and the distance between the last touch position and the reference position is used as the core thickness radius. Specifically, a core thickness radius temporary storage value corer_temp may be set first, where the value of the core thickness radius corer=corer_temp may be greater than or equal to the outer edge radius R of the tool, and in the initial state, the value of corer_temp is updated according to the X-axis coordinate value of the touch position when the touch occurs in each round of movement detection, that is, the value of corer_temp is equal to the X-axis coordinate value of the touch position, the value of coreR and the updated value of corer_temp are compared, if the value of coreR is greater than the updated value of corer_temp, the value of coreR is made equal to the updated value of corer_temp, and the next round of movement detection is continuously performed until the value of coreR is less than the updated value of corer_temp, where the value of coreR is the core thickness radius of the tool.
In one embodiment, the preset positions include a first preset position and a second preset position, the distance between the first preset position and the reference position is within a preset distance range, the preset distance range is a distance range formed by the distance between the distance in the chip pocket of the cutter 101 and the reference position, the distance between the second preset position and the reference position is greater than the outer edge radius of the cutter 101, and a straight line where a connecting line of the second preset position and the first preset position is located is perpendicular to and intersects with the axis of the cutter 101; the control probe 102 touches the tool 101 from a preset position, including: controlling the measuring head 102 to move from the second preset position to the first preset position; in the advancing process, if the measuring head 102 touches the cutter 101, the measuring head 102 is controlled to return to a second preset position, the cutter 101 is rotated, and the step of controlling the measuring head 102 to advance from the second preset position to a first preset position is returned until the first preset position falls into a chip pocket of the cutter 101, and the measuring head 102 reaches the first preset position; finally, the control probe 102 touches the cutter 101 from a first preset position; controlling the stylus 102 to return to the preset position includes: the control stylus 102 is returned to the first preset position.
It will be appreciated that the preset positions include a first preset position and a second preset position, where the distance between the first preset position and the reference position is within a preset distance range, where the preset distance range is a distance formed by a distance between the first preset position and the reference position, i.e. a distance between the first preset position and the reference position is smaller than the outer edge radius R of the tool 101 and is larger than the core thickness radius of the inner core of the tool 101, for example, may be located at the position c in fig. 2; the second preset position is located outside the cutter 101, which may be for example the a position in fig. 2. The preset positions may further include positions having a distance from the reference position equal to the outer edge radius R of the tool 101.
In one embodiment, the control probe 102 touches the tool 101 from the preset position, and may take the first preset position as the initial position of the probe 102, where the first preset position is located in the chip flute of the tool 101, and when the core thickness is measured, the control probe 102 always touches the tool 101 from the first preset position, and in the returning process, the control probe 102 returns to the first preset position, so as to finally obtain the core thickness radius. In another embodiment, the second preset position may be used as the initial position of the probe 102, when the core thickness is measured, the control probe 102 always touches the tool 101 from the second preset position, and in the returning process, the control probe 102 returns to the second preset position, so as to finally obtain the core thickness radius.
In this embodiment, the second preset position may be used as the initial position of the probe 102, and the probe 102 is controlled to travel from the second preset position to the first preset position, and if the first preset position is just located in the chip pocket of the tool 101, the probe 102 may travel directly to the first preset position without touching. As shown in fig. 4, let a1 be the first preset position and a2 be the second preset position; if the first preset position a1 is located inside the tool 101, as shown in fig. 5, the control probe 102 will touch the back surface of the tool 101 during the process of moving from the second preset position a2 to the first preset position a 1. At this time, the gauge head 102 may be controlled to return to the second preset position a2, and the tool 101 is rotated, and then the gauge head 102 is controlled to move from the second preset position a2 to the first preset position a1 until the first preset position a1 falls into the chip pocket of the tool 101, and the gauge head 102 reaches the first preset position, which is the situation shown in fig. 4. Then, the control probe 102 touches the tool 101 from the first preset position to obtain a touched position, and when the control probe 102 returns to the preset position, the control probe 102 returns to the first preset position.
Specifically, the coordinate difference between the first preset position a1 and the reference position may be R-0.5. When the end of the end edge of the tool 101 is set as the origin of the target coordinate system, the first coordinate axis is located on the axis of the tool 101, and the second coordinate axis is located on the plane where the axis of the tool 101 and the preset position are located, wherein the first coordinate axis is the Z axis, and the second coordinate axis is the X axis, the X axis coordinate value of the first preset position a1 may be R-0.5.
The direction of the rotary cutter 101 may be arbitrary, for example, clockwise or counterclockwise with respect to one end of the end blade, and the direction of the rotary cutter 101 may be clockwise or counterclockwise. The angle of rotation of the cutter 101 may be less than 20 ° per rotation, in an alternative embodiment, the angle of rotation may be 10 °.
In this embodiment, by setting the first preset position and the second preset position, taking the second preset position as the initial position of the measuring head 102, firstly controlling the measuring head 102 to travel from the second preset position to the first preset position, and adjusting the cutter 101 and the measuring head 102 according to the touch condition, so that the measuring head 102 enters into the chip pocket of the cutter 101, then controlling the measuring head 102 to touch the cutter 101 from the first preset position, and obtaining the target touch position and further obtaining the core thickness radius by comparing the distances between the current touch position and the last touch position and the reference position.
In one embodiment, prior to returning to the step of controlling the travel of the stylus 102 from the second preset position to the first preset position, the method further comprises: acquiring the rotated angle of the cutter 101; and if the rotated angle reaches the angle threshold, adjusting the second preset position to increase the distance between the second preset position and the first preset position.
It will be appreciated that, during the process of controlling the stylus 102 to travel from the second preset position to the first preset position, when the stylus 102 touches the tool 101, the stylus 102 is controlled to return to the second preset position and rotate the tool 101, and then the rotated angle of the tool 101 is obtained. If the rotation angle does not reach the angle threshold value, returning to the step of controlling the measuring head 102 to travel from the second preset position to the first preset position until the first preset position falls into the chip pocket of the cutter 101 and the measuring head 102 reaches the first preset position; if the rotated angle reaches the angle threshold, the second preset position is adjusted to increase the distance between the second preset position and the first preset position, and then the step of controlling the measuring head 102 to travel from the second preset position to the first preset position is returned until the first preset position falls into the chip pocket of the cutter 101 and the measuring head 102 reaches the first preset position. When the second preset position is adjusted to increase the distance between the second preset position and the first preset position, a straight line where a connecting line between the second preset position and the first preset position is located should be kept and perpendicular to and intersected with the axis of the cutter 101.
The angle threshold may be greater than or equal to an included angle formed by two adjacent peripheral edges, for example, for a two-edge tool 101, the included angle between two peripheral edges may be 180 °, at least 180 °, for a three-edge tool 101, the included angle between two adjacent peripheral edges may be 120 °, at least 120 °, and so on.
In one embodiment, the step of controlling the stylus 102 to touch the tool 101 from a first predetermined position includes: rotating the tool 101 in a first direction until the stylus 102 touches the tool 101; rotating the tool 101 in a second direction to separate the stylus 102 from the tool 101, wherein the second direction is opposite to the first direction; controlling the measuring head to touch the cutter rotated in the second direction from the first preset position; the method for measuring the thickness of the cutter core further comprises the following steps: in the case where the control stylus 102 is returned to the first preset position, the tool 101 is rotated in the second direction.
It will be appreciated that the first direction may be clockwise or counter-clockwise with respect to one end of the end edge of the cutter 101. Taking the first direction as the counterclockwise direction in fig. 4 as an example, when the gauge head 102 is controlled to touch the tool 101 from the first preset position, the position states of the gauge head 102 and the tool 101 may be shown in fig. 4, then the tool 101 is rotated in the first direction, i.e. counterclockwise direction, to touch the tool 101, as shown in fig. 6, and then the tool 101 is rotated in the second direction, i.e. clockwise direction, after the touch, to separate the gauge head 102 from the tool 101, as shown in fig. 7. The step of controlling the measuring head 102 to touch the cutter 101 from the first preset position in the second direction is executed again to obtain a touch position, then controlling the measuring head 102 to return to the first preset position, rotating the cutter 101 in the second direction, namely clockwise, and returning to the step of controlling the measuring head 102 to touch the cutter 101 from the first preset position to obtain a touch position until a target touch position for representing the minimum core thickness is obtained to obtain the core thickness radius.
Wherein, when the cutter is rotated in the second direction after touching, the rotation angle may be 5 °.
In this embodiment, when the measuring head 102 is controlled to touch the tool 101 from the first preset position, the tool 101 is rotated in the first direction until the measuring head 102 touches the tool 101, and then the tool 101 is rotated in the second direction, so that the measuring head 102 is separated from the tool 101, thereby ensuring that the measuring head 102 is located in the two side areas of the deepest part of the chip pocket, further repeatedly executing the rotation of the tool 101 in the second direction, and controlling the step of touching the tool 101 from the first preset position to obtain the touching position, so that the possibility that the measuring head 102 travels to the deepest part of the chip pocket of the tool 101 can be improved, and finally the accuracy of measuring the core thickness radius can be improved.
In one embodiment, the method further comprises: rotating the tool 101 at a first preset angle with the control probe 102 returned to the first preset position; in the case where the control stylus 102 is returned to the second preset position, the tool 101 is rotated at the second preset angle, the first preset angle being smaller than the second preset angle.
It can be understood that, in the process of controlling the gauge head 102 to travel from the second preset position to the first preset position, if the gauge head 102 touches the tool 101, the control gauge head 102 returns to the second preset position and rotates the tool 101 at the first preset angle; in the process of obtaining the target touch position, the control probe 102 touches the cutter 101 from the first preset position to obtain the touch position, then the control probe 102 returns to the first preset position, rotates the cutter 101 at the first preset angle, further returns to the control probe 102 to touch the cutter 101 from the first preset position, and finally obtains the target touch position. The first preset angle is smaller than the second preset angle, the second preset angle with a larger angle value advances from the second preset position to the first preset position, and the progress of the probe 102 from the second preset position to the first preset position can be accelerated, so that the measurement efficiency is improved, meanwhile, the first preset angle with a smaller angle value is used for touching the cutter 101, the accuracy of determining the target touching position can be improved, and the accuracy of measuring the core thickness radius is further improved. Wherein the first preset angle may be 5 ° and the second preset angle may be 10 °.
Another embodiment of the present invention provides a method for measuring the core thickness of a cutter 101, the method comprising the steps of:
step (a 1): the measuring head 102 is controlled to move from a second preset position to a first preset position, the distance between the first preset position and a reference position is within a preset distance range, the preset distance range is a distance range formed by the distance between the distance inside a chip pocket of the cutter 101 and the reference position, the distance between the second preset position and the reference position is larger than the outer edge radius of the cutter 101, and a straight line where a connecting line of the first preset position, the second preset position and the reference position is located is perpendicular to and intersected with the axis of the cutter 101, and the reference position is located on the axis of the cutter 101.
Step (a 2): during the traveling process, if the measuring head 102 touches the cutter 101, the measuring head 102 is controlled to return to a second preset position, and the cutter 101 is rotated by a second preset angle, so that the rotated angle of the cutter 101 is obtained; if the rotated angle reaches the angle threshold, the second preset position is adjusted to increase the distance between the second preset position and the first preset position; returning to the step of controlling the gauge head 102 to travel from the second preset position to the first preset position until the first preset position falls into the chip pocket of the tool 101 and the gauge head 102 reaches the first preset position.
Step (a 3): the tool 101 is rotated in a first direction until the stylus 102 touches the tool 101.
Step (a 4): rotating the tool 101 in a second direction to separate the stylus 102 from the tool 101; wherein the second direction is opposite to the first direction.
Step (a 5): the control probe 102 touches the tool 101 rotated in the second direction from the first preset position to obtain a touched position.
Step (a 6): and acquiring touch coordinates of the touch position under the target coordinate system.
Step (a 7): and acquiring the reference coordinates of the reference position in the target coordinate system.
Step (a 8): and determining the distance between the touch position and the reference position according to the difference value between the touch coordinate and the reference coordinate.
Step (a 9): the control probe 102 returns to the first preset position, rotates the cutter 101 in the second direction at the first preset angle, and returns to the step of controlling the probe 102 to touch the cutter 101 from the first preset position to obtain the touch position until the last touch position is used as the target touch position if the distance between the current touch position and the reference position is greater than the distance between the last touch position and the reference position, and the first preset angle with the distance between the last touch position and the reference position as the core thickness radius is smaller than the second preset angle.
In this embodiment, by setting the first preset position and the second preset position, taking the second preset position as the initial position of the measuring head 102, controlling the measuring head 102 to travel from the second preset position to the first preset position, and adjusting the tool 101 and the measuring head 102 according to the touch condition, so that the measuring head 102 enters into the chip pocket of the tool 101, then controlling the measuring head 102 to touch the tool 101 from the first preset position, and comparing the distances between the current touch position and the last touch position and the reference position to obtain the target touch position, and further obtaining the core thickness radius.
It should be understood that, although the steps in the flowchart of fig. 1 are shown in sequence as indicated by the arrows, and the steps in steps (a 1) to (a 9) are shown in sequence as indicated by the numerals, these steps are not necessarily performed in sequence as indicated by the arrows or numerals. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least a portion of the steps in fig. 1 may include a plurality of steps or stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of the steps or stages is not necessarily sequential, but may be performed in rotation or alternatively with at least a portion of the steps or stages in other steps or other steps thereof.
In one embodiment, as shown in fig. 8, a block diagram of a core thickness measuring device of the cutter 101 in one embodiment, where the device may use a software module or a hardware module, or a combination of both, as a part of a computer device, the device specifically includes: a first control module 801 and a second control module 802. The first control module 801 is configured to control the gauge head 102 to touch the tool 101 from a preset position, so as to obtain a touch position; the second control module 802 is configured to control the gauge head 102 to return to the preset position, rotate the tool 101, and return to the step of controlling the gauge head 102 to touch the tool 101 from the preset position to obtain a touch position until a target touch position for representing the minimum core thickness is obtained, so as to obtain a core thickness radius.
In one embodiment, the device for measuring the core thickness of the cutter 101 further comprises a distance determining module, configured to determine a distance between the touch position and the reference position after obtaining the touch position; the second control module 802 is further configured to, if the distance between the current touch position and the reference position is greater than the distance between the previous touch position and the reference position, use the previous touch position as the target touch position, and use the distance between the previous touch position and the reference position as the core thickness radius; the reference position is located on the axis of the cutter 101, and a line connecting the reference position and the preset position is perpendicular to the axis of the cutter 101.
In one embodiment, the distance determining module is further configured to obtain a touch coordinate of the touch location in the target coordinate system; acquiring a reference coordinate of a reference position in a target coordinate system; and determining the distance between the touch position and the reference position according to the difference value between the touch coordinate and the reference coordinate.
In one embodiment, the preset positions include a first preset position and a second preset position, the distance between the first preset position and the reference position is within a preset distance range, the preset distance range is a distance range formed by the distance between the distance in the chip pocket of the cutter 101 and the reference position, the distance between the second preset position and the reference position is greater than the outer edge radius of the cutter 101, and a straight line where a connecting line of the second preset position and the first preset position is located is perpendicular to and intersects with the axis of the cutter 101; the first control module 801 is further configured to: controlling the measuring head 102 to move from the second preset position to the first preset position; in the advancing process, if the measuring head 102 touches the cutter 101, the measuring head 102 is controlled to return to a second preset position, the cutter 101 is rotated, and the step of controlling the measuring head 102 to advance from the second preset position to a first preset position is returned until the first preset position falls into a chip pocket of the cutter 101, and the measuring head 102 reaches the first preset position; the control probe 102 touches the cutter 101 from a first preset position; the second control module is also used to control the stylus 102 to return to the first preset position.
In one embodiment, the first control module 801 is further configured to obtain the rotated angle of the tool 101 prior to returning to the step of controlling the stylus 102 to travel from the second preset position to the first preset position; and if the rotated angle reaches the angle threshold, adjusting the second preset position to increase the distance between the second preset position and the first preset position.
In one embodiment, the first control module 801 is further configured to rotate the tool 101 in a first direction until the stylus 102 touches the tool 101; rotating the tool 101 in the opposite direction to the second direction to separate the stylus 102 from the tool 101; wherein the second direction is opposite to the first direction; the control probe touches the cutter rotated in the second direction from the first preset position. The second control module 802 is also configured to rotate the tool 101 in a second direction in response to the control of the return of the stylus 102 to the first preset position.
In one embodiment, the second control module 802 is further configured to rotate the tool 101 at a first preset angle in the event that the control stylus 102 is returned to the first preset position; the first control module 801 is further configured to rotate the tool 101 by a second preset angle when the gauge head 102 is controlled to return to the second preset position, where the first preset angle is smaller than the second preset angle.
For specific limitations of the tool core thickness measuring device, reference may be made to the above limitations of the tool core thickness measuring method, and no further description is given here. The various modules in the tool core thickness measuring device described above may be implemented in whole or in part by software, hardware, and combinations thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.
In one embodiment, a computer device is provided, which may be a tool core thickness measurement device, the internal structure of which may be as shown in FIG. 9. The computer device includes a processor, a memory, a communication interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The communication interface of the computer device is used for carrying out wired or wireless communication with an external terminal, and the wireless mode can be realized through WIFI, an operator network, NFC (near field communication) or other technologies. The computer program is executed by a processor to implement a method of tool core thickness measurement. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, can also be keys, a track ball or a touch pad arranged on the shell of the computer equipment, and can also be an external keyboard, a touch pad or a mouse and the like.
It will be appreciated by those skilled in the art that the structure shown in fig. 9 is merely a block diagram of a portion of the structure associated with the present application and is not limiting of the computer device to which the present application applies, and that a particular computer device may include more or fewer components than shown, or may combine some of the components, or have a different arrangement of components.
The embodiment of the invention also provides a computer device, which comprises a memory and a processor, wherein the memory stores a computer program, and the method is characterized in that the processor realizes the steps of the method for measuring the thickness of the cutter core in any embodiment when executing the computer program.
An embodiment of the present invention also provides a computer-readable storage medium, on which a computer program is stored, characterized in that the computer program, when executed by a processor, implements the steps of the tool core thickness measurement method of any of the above embodiments.
In one embodiment, a computer program product or computer program is provided that includes computer instructions stored in a computer readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions to cause the computer device to perform the steps of the method embodiments described above.
Those skilled in the art will appreciate that implementing all or part of the above described methods in accordance with the embodiments may be accomplished by way of a computer program stored in a non-transitory computer readable storage medium, which when executed may comprise the steps of the above described embodiments of the methods. Any reference to memory, storage, database, or other medium used in embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, or the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory. By way of illustration, and not limitation, RAM can be in the form of a variety of forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), and the like.
The foregoing description is only of the preferred embodiments of the present application, and is not intended to limit the scope of the claims, and all equivalent structures or equivalent processes using the descriptions and drawings of the present application, or direct or indirect application in other related technical fields are included in the scope of the claims of the present application.
Claims (7)
1. A method of measuring tool core thickness, the method comprising:
controlling the measuring head to touch the cutter from a preset position to obtain a touch position;
controlling the measuring head to return to the preset position, rotating the cutter, and returning to the step of controlling the measuring head to touch the cutter from the preset position to obtain a touch position until a target touch position for representing the minimum core thickness is obtained to obtain a core thickness radius; after the touch position is obtained, the method further comprises:
determining the distance between the touch position and the reference position;
the obtaining the target touch position for representing the minimum core thickness to obtain the core thickness radius comprises the following steps:
if the current distance between the touch position and the reference position is greater than the distance between the last touch position and the reference position, the last touch position is used as the target touch position, and the distance between the last touch position and the reference position is used as the core thickness radius; the reference position is positioned on the axis of the cutter, and a straight line where a connecting line with the preset position is positioned is perpendicular to the axis of the cutter;
the preset positions comprise a first preset position and a second preset position; the distance between the first preset position and the reference position is within a preset distance range, wherein the preset distance range is a distance range formed by the distance between the position in the chip pocket of the cutter and the reference position; the distance between the second preset position and the reference position is larger than the outer edge radius of the cutter, and the straight line where the connecting line of the second preset position and the first preset position is located is perpendicular to and intersected with the axis of the cutter;
The control probe touches the cutter from the preset position, and the control probe comprises:
controlling the measuring head to move from the second preset position to the first preset position;
in the advancing process, if the measuring head is touched with the cutter, the measuring head is controlled to return to the second preset position, the cutter is rotated, and the step of controlling the measuring head to advance from the second preset position to the first preset position is returned until the first preset position falls into a chip pocket of the cutter and the measuring head reaches the first preset position;
controlling the measuring head to touch the cutter from the first preset position;
the controlling the probe to return to the preset position comprises the following steps:
controlling the measuring head to return to the first preset position;
the controlling the measuring head to touch the cutter from the first preset position comprises the following steps:
rotating the cutter in a first direction until the measuring head touches the cutter;
rotating the tool in a second direction to separate the probe from the tool; wherein the second direction is opposite to the first direction;
controlling the measuring head to touch the cutter rotated in the second direction from the first preset position;
The cutter core thickness measuring method further comprises the following steps:
and rotating the cutter in the second direction under the condition that the measuring head is controlled to return to the first preset position.
2. The method of claim 1, wherein determining the distance between the touch location and a reference location comprises:
acquiring touch coordinates of the touch position under a target coordinate system;
acquiring a reference coordinate of a reference position in the target coordinate system;
and determining the distance between the touch position and the reference position according to the difference value between the touch coordinate and the reference coordinate.
3. The method of claim 1, wherein prior to returning to the step of controlling travel of the gauge head from the second preset position to the first preset position, the method further comprises:
acquiring the rotated angle of the cutter;
and if the rotated angle reaches an angle threshold, adjusting the first preset position to reduce the distance between the second preset position and the first preset position.
4. The tool core thickness measurement method according to claim 1, further comprising:
Rotating the tool at a first preset angle under the condition of controlling the gauge head to return to the first preset position;
and under the condition that the measuring head is controlled to return to the second preset position, rotating the cutter at a second preset angle, wherein the first preset angle is smaller than the second preset angle.
5. A tool core thickness measurement device, the device comprising:
the first control module is used for controlling the measuring head to touch the cutter from a preset position to obtain a touch position;
the second control module is used for controlling the measuring head to return to the preset position, rotating the cutter and returning to the step of controlling the measuring head to touch the cutter from the preset position to obtain a touch position until a target touch position for representing the minimum core thickness is obtained, so as to obtain the core thickness radius;
the distance determining module is used for determining the distance between the touch position and the reference position after the touch position is obtained;
the second control module is further configured to, if a distance between the current touch position and the reference position is greater than a distance between a previous touch position and the reference position, use the previous touch position as the target touch position, and use a distance between the previous touch position and the reference position as the core thickness radius; the reference position is positioned on the axis of the cutter, and the straight line where the reference position is connected with the preset position is vertical to the axis of the cutter;
The preset positions comprise a first preset position and a second preset position; the distance between the first preset position and the reference position is within a preset distance range, wherein the preset distance range is a distance range formed by the distance between the position in the chip pocket of the cutter and the reference position; the distance between the second preset position and the reference position is larger than the outer edge radius of the cutter, and the straight line where the connecting line of the second preset position and the first preset position is located is perpendicular to and intersected with the axis of the cutter;
the control probe touches the cutter from the preset position, and the control probe comprises:
controlling the measuring head to move from the second preset position to the first preset position;
in the advancing process, if the measuring head is touched with the cutter, the measuring head is controlled to return to the second preset position, the cutter is rotated, and the step of controlling the measuring head to advance from the second preset position to the first preset position is returned until the first preset position falls into a chip pocket of the cutter and the measuring head reaches the first preset position;
controlling the measuring head to touch the cutter from the first preset position;
The controlling the probe to return to the preset position comprises the following steps:
controlling the measuring head to return to the first preset position;
the controlling the measuring head to touch the cutter from the first preset position comprises the following steps:
rotating the cutter in a first direction until the measuring head touches the cutter;
rotating the tool in a second direction to separate the probe from the tool; wherein the second direction is opposite to the first direction;
controlling the measuring head to touch the cutter rotated in the second direction from the first preset position;
the cutter core thickness measuring method further comprises the following steps:
and rotating the cutter in the second direction under the condition that the measuring head is controlled to return to the first preset position.
6. A tool core thickness measuring device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, carries out the steps of the method according to any one of claims 1 to 4.
7. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 4.
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| JP2603605Y2 (en) * | 1993-12-17 | 2000-03-15 | 北川精機株式会社 | Automatic work shape detection device |
| JP2003207318A (en) * | 2002-01-16 | 2003-07-25 | Sumitomo Electric Ind Ltd | Method and device for measuring drill sectional shape |
| TWI254124B (en) * | 2004-06-29 | 2006-05-01 | Yeong-Shin Tarng | Apparatus for measuring the thickness of a drill core and the method thereof |
| JP5309860B2 (en) * | 2008-10-08 | 2013-10-09 | 株式会社不二越 | Method for detecting the position of the reference rake face of a numerically controlled broach grinder |
| JP5302936B2 (en) * | 2010-06-30 | 2013-10-02 | ユニオンツール株式会社 | measuring device |
| JP5854661B2 (en) * | 2011-06-28 | 2016-02-09 | 三菱重工業株式会社 | Calibration method of probe for shape measurement |
| CN102878968B (en) * | 2012-09-20 | 2015-07-29 | 湖北三江航天险峰电子信息有限公司 | A kind of online test method of large moldeed depth blind hole size |
| TWI509214B (en) * | 2014-12-30 | 2015-11-21 | Univ Nat Taiwan Ocean | A non-destructive and optical measurement automation system for web thickness of microdrills and method thereof |
| CN112556562B (en) * | 2020-12-09 | 2022-10-21 | 安徽江淮汽车集团股份有限公司 | Measuring device, storage medium, and method for measuring gap and surface difference |
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