CN116442002A - Axis A positioning precision detection and adjustment device and detection and adjustment method - Google Patents

Axis A positioning precision detection and adjustment device and detection and adjustment method Download PDF

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Publication number
CN116442002A
CN116442002A CN202310458617.7A CN202310458617A CN116442002A CN 116442002 A CN116442002 A CN 116442002A CN 202310458617 A CN202310458617 A CN 202310458617A CN 116442002 A CN116442002 A CN 116442002A
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CN
China
Prior art keywords
detection
adjusting
core rod
axis
plate
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Pending
Application number
CN202310458617.7A
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Chinese (zh)
Inventor
王晓刚
李鹏飞
朱井明
苗达兴
钟学勇
王惠民
祝帅
于秋波
商宇强
屈占秋
聂新宇
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FAW Jiefang Automotive Co Ltd
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FAW Jiefang Automotive Co Ltd
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Application filed by FAW Jiefang Automotive Co Ltd filed Critical FAW Jiefang Automotive Co Ltd
Priority to CN202310458617.7A priority Critical patent/CN116442002A/en
Publication of CN116442002A publication Critical patent/CN116442002A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools

Abstract

The invention belongs to the technical field of machining machine tools, and discloses an A-axis positioning accuracy detection and adjustment device and a detection and adjustment method, wherein the A-axis positioning accuracy detection and adjustment device comprises an L-shaped plate connected to an A-axis, a positioning bottom plate, an adjusting plate, a V-shaped seat, a positioning block, an adjusting bolt and a detection assembly, wherein the positioning bottom plate, the adjusting plate, the V-shaped seat, the positioning block, the adjusting bolt and the detection assembly are sequentially arranged on the L-shaped plate; the detection assembly is arranged on a machine tool spindle, and the machine tool spindle can drive the detection assembly to move along the X direction to measure and detect the deviation values of the upper bus and the side bus of the core rod. The invention can improve the positioning precision of the A axis.

Description

Axis A positioning precision detection and adjustment device and detection and adjustment method
Technical Field
The invention relates to the technical field of machining tools, in particular to an A-axis positioning precision detection and adjustment device and a detection and adjustment method.
Background
In the application of machining center machine tools in machining production, detection and adjustment of positioning accuracy of an A axis are involved, and a V-shaped positioning block is one of commonly used positioning elements in machine tool fixtures. A machining center lathe includes two A axles that the interval set up, and the epaxial mounting fixture of A is used for centre gripping axle spare to carry out the processing, and wherein A axle is the axis that X axle rotation around the horizontal direction in the lathe coordinate system XYZ of machining center lathe, and the Z axle is along vertical direction, and the Y axle is along horizontal direction perpendicular to X axle. In the prior art, when the positioning accuracy of the A shaft is detected by adopting the V-shaped positioning block, the positioning center line of the V-shaped positioning block is not coaxial with the rotation center of the A shaft, the accuracy is not easy to detect, the positioning accuracy of the A shaft clamp is low, the adjustment is difficult, and the processing rejection rate is high.
Disclosure of Invention
The invention aims to provide an A-axis positioning accuracy detection and adjustment device and a detection and adjustment method, which are used for solving the problem that a V-shaped seat is difficult to adjust in A-axis positioning detection so as to improve the A-axis positioning accuracy.
To achieve the purpose, the invention adopts the following technical scheme:
the invention firstly provides an A-axis positioning accuracy detection and adjustment device, which comprises:
the L-shaped plates are arranged, are respectively arranged on the two A shafts, and are fixedly connected with the vertical plates of the L-shaped plates;
the positioning bottom plate is positioned on the transverse plate of the L-shaped plate;
the V-shaped seat is arranged on the positioning bottom plate, and the detection core rod is arranged in a V-shaped opening of the V-shaped seat;
the adjusting plate is arranged between the positioning bottom plate and the V-shaped seat and is used for adjusting the Z-position of the V-shaped seat;
the positioning block is fixed on the L-shaped plate and is positioned at one side of the positioning bottom plate along the Y direction;
the adjusting bolt penetrates through the positioning block and is connected to the side face of the adjusting plate in a threaded mode, and the adjusting bolt is used for adjusting the Y position of the V-shaped seat;
the detection assembly is arranged on a machine tool spindle, and the machine tool spindle can drive the detection assembly to move along the X direction to measure the deviation values of the upper bus and the side bus of the detection core rod.
Optionally, two adjusting bolts are arranged, and the two adjusting bolts are arranged at intervals along the X direction.
Optionally, the a-axis positioning accuracy detection and adjustment device further comprises a gasket, the gasket is arranged in the V-shaped opening of the V-shaped seat and is attached to the inner wall of the V-shaped opening, and the detection core rod is located on the gasket.
Optionally, the V-shaped seat and the positioning bottom plate are detachably connected, and the positioning bottom plate and the transverse plate of the L-shaped plate are detachably connected.
The invention also provides an A-axis positioning precision detection and adjustment method, which comprises the following steps of:
s1, respectively fixing first detection core rods on two A shafts, respectively detecting the positioning accuracy of the two first detection core rods through a detection assembly, adjusting the Z position of a V-shaped seat through adjusting the thickness of an adjusting plate, and adjusting the Y position of the V-shaped seat through adjusting the screwing depth of an adjusting bolt;
s2, fixing a second detection core rod on the two A shafts at the same time, detecting the positioning accuracy of the second detection core rod through the detection assembly, adjusting the Z-direction position of the V-shaped seat through adjusting the thickness of the adjusting plate, and adjusting the Y-direction position of the V-shaped seat through the screwing depth of the adjusting bolt.
Optionally, step S1 specifically includes:
s11, the rotation angle of the A axis is 0 degree, and a machine tool main shaft drives the detection assembly to move and measure at the highest point of the outer circle upper surface of the first detection core rod along the X direction, so that the maximum value and the minimum value of the upper bus of the first detection core rod are obtained;
s12, the rotation angle of the axis A is 0 degree, and the machine tool main shaft drives the detection assembly to move and measure at the highest point of the outer circle side surface of the first detection core rod along the X direction, so that the maximum value and the minimum value of the side bus of the first detection core rod are obtained;
s13, the rotation angle of the A shaft is 0 degree, the machine tool main shaft drives the detection assembly to be located at one end of the first detection core rod, the A shaft rotates for one circle, and the detection assembly measures the coaxiality value of the first detection core rod and the A shaft.
Optionally, in step S11, if the difference between the maximum value and the minimum value of the upper bus bar of the first detecting mandrel is greater than 0.01mm, the thickness of the adjusting plate is adjusted until the difference is less than or equal to 0.01mm.
Optionally, in step S12, if the difference between the maximum value and the minimum value of the side bus bar of the first detecting mandrel is greater than 0.01mm, the screwing depth of the adjusting bolt is adjusted until the difference is less than or equal to 0.01mm.
Optionally, in step S13, when the rotation angle of the a axis is 90 °, 180 °, 270 ° and 0 ° as measured by the detection assembly, the maximum value and the minimum value of the highest point of the outer circumferential surface of the first detection core rod are adjusted by adjusting the thickness of the adjusting plate and the screwing depth of the adjusting bolt, and the difference between the maximum value and the minimum value of the highest point of the outer circumferential surface of the first detection core rod is less than 0.03mm.
Optionally, step S2 specifically includes:
the rotation angles of the two A shafts are 0 degrees, the detection assembly is located at the highest point of the upper surface of the outer circle of the second detection core rod, and the machine tool spindle drives the detection assembly to move along the X direction to measure the maximum value and the minimum value of the upper generatrix of the second detection core rod;
the rotation angles of the two A shafts are 0 degrees, the detection assembly is located at the highest point of the outer circle side surface of the second detection core rod, and the machine tool spindle drives the detection assembly to move along the X direction to measure the maximum value and the minimum value of the side bus of the second detection core rod;
and the two A shafts are rotated by 90 degrees, 180 degrees, 270 degrees and 0 degree simultaneously in sequence, and the deviation value of the upper bus of the second detection core rod and the deviation value of the side bus of the second detection core rod are measured in sequence.
The invention has the beneficial effects that:
according to the A-axis positioning precision detection and adjustment device, the detection assembly is arranged on the machine tool spindle, the detection assembly can be driven by the machine tool spindle to detect and measure the deviation value of the upper bus and the side bus of the detection core rod, and according to the detection and measurement result, the adjusting plate is arranged at the bottom end of the V-shaped seat, so that the Z-position of the V-shaped seat can be adjusted by adjusting the thickness of the adjusting plate to reduce the deviation value of the upper bus; the Y-position of the V-shaped seat can be adjusted to reduce the deviation value of the side bus through the positioning block and the adjusting bolt, and further the positioning accuracy of the A shaft is detected and adjusted through the positioning adjustment of the V-shaped seat and the detecting core rod, so that the positioning accuracy of the A shaft is improved.
According to the method for detecting and adjusting the positioning accuracy of the A shafts, the positioning accuracy of the two A shafts can be respectively adjusted and improved by arranging the first detecting core rods on the two A shafts for positioning detection; the two A shafts are simultaneously provided with the second detection core rod for positioning detection, so that the coaxial positioning precision of the two A shafts can be adjusted and improved, and the A shaft positioning precision of the machining center workbench is improved.
Drawings
Fig. 1 is a schematic view of a first view angle structure of an a-axis positioning accuracy detecting and adjusting device according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a second view angle structure of the a-axis positioning accuracy detecting and adjusting device according to the embodiment of the present invention;
fig. 3 is a schematic structural diagram of a first detecting core rod in a position with a rotation angle of 0 ° of an a axis in the method for detecting and adjusting positioning accuracy of the a axis according to the embodiment of the present invention;
fig. 4 is a schematic structural diagram of a first detecting core rod in a position with a rotation angle of 90 ° of an a axis in the method for detecting and adjusting positioning accuracy of the a axis according to the embodiment of the present invention;
fig. 5 is a schematic structural diagram of a position of a second detecting core rod with a rotation angle of 0 ° on the a axis in the method for detecting and adjusting positioning accuracy of the a axis according to the embodiment of the present invention;
fig. 6 is a schematic structural diagram of a position of the second detecting core rod with a rotation angle of 90 ° on the a axis in the method for detecting and adjusting positioning accuracy of the a axis according to the embodiment of the present invention.
In the figure:
100. an A axis; 200. a machine tool spindle; 300. detecting the core rod; 301. a first detection core rod; 302. a second detecting core rod;
1. an L-shaped plate; 2. positioning a bottom plate; 3. a V-shaped seat; 4. an adjustment plate; 5.a positioning block; 6. an adjusting bolt; 7. a detection assembly; 71. a dial gauge; 72. a detection probe; 8. a gasket.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
As shown in fig. 1 and 2, an embodiment of the present invention provides an a-axis positioning accuracy detecting and adjusting device, in which an a-axis 100 is disposed on a table of a machining center, and is disposed along an X-direction and rotatable about the X-direction, and two opposite a-axes 100 are disposed on each table, and the a-axes 100 are used for clamping a workpiece for machining. The table is also provided with a machine tool spindle 200, and the machine tool spindle 200 is provided along the Z direction and movable along the X direction. According to the A-axis positioning accuracy detection and adjustment device provided by the embodiment, the detection and adjustment of the A-axis 100 are realized through the position detection and adjustment of the detection core rod 300, so that the positioning accuracy of the A-axis 100 is improved. As shown in fig. 1 and 2, the a-axis positioning accuracy detecting and adjusting device comprises an L-shaped plate 1, a positioning bottom plate 2, a V-shaped seat 3, an adjusting plate 4, a positioning block 5, an adjusting bolt 6 and a detecting component 7, wherein the L-shaped plate 1 is provided with two, the vertical plates of the L-shaped plate 1 are fixedly connected with the A shafts 100 and can rotate along with the A shafts 100; the positioning bottom plate 2 is positioned on the transverse plate of the L-shaped plate 1, and the positioning bottom plate 2 and the transverse plate of the L-shaped plate 1 can be detachably connected by adopting bolt connection so as to be convenient for positioning and locking after adjustment. The V-shaped seat 3 is arranged on the positioning bottom plate 2, the detection core rod 300 is arranged in a V-shaped opening of the V-shaped seat 3, and is installed through self-centering positioning; the adjusting plate 4 is arranged between the positioning bottom plate 2 and the V-shaped seat 3, and the adjusting plate 4 is used for adjusting the Z-direction position of the V-shaped seat 3; the positioning block 5 is fixed on the L-shaped plate 1 and is positioned at one side of the positioning bottom plate 2 along the Y direction; the adjusting bolt 6 passes through the positioning block 5 and is connected to the side surface of the adjusting plate 4 in a threaded manner, and the adjusting bolt 6 is used for adjusting the Y-direction position of the V-shaped seat 3; the detection assembly 7 is mounted on the machine tool spindle 200, and the machine tool spindle 200 can drive the detection assembly 7 to move along the X direction to measure and detect the deviation values of the upper bus and the side bus of the mandrel 300, and the specific detection method steps are described in detail in the later spindle positioning accuracy detection and adjustment method.
According to the A-axis positioning precision detection and adjustment device provided by the invention, the detection assembly 7 is arranged on the machine tool spindle 200, the detection assembly 7 can be driven by the machine tool spindle 200 to detect and measure the deviation value of the upper bus and the side bus of the detection core rod 300, and according to the detection and measurement result, the adjusting plate 4 is arranged at the bottom end of the V-shaped seat 3, and the Z-direction position of the V-shaped seat 3 can be adjusted by adjusting the thickness of the adjusting plate 4 so as to reduce the deviation value of the upper bus; through setting up locating piece 5 and adjusting bolt 6, can adjust the Y to the position of V type seat 3 and reduce the offset value of side generating line, and then through the location adjustment to V type seat 3 and detection plug 300, realize the detection and the regulation to the positioning accuracy of A axle to improve the positioning accuracy of A axle. When the rotation angle of the axis a is 0 °, the highest point of the outer circumferential surface of the detecting core rod 300 is located, and the side bus is located at the highest point of the outer circumferential surface of the detecting core rod 300, which can be determined by moving and measuring the detecting component 7 driven by the machine tool spindle 200.
In the above embodiment, the adjusting plate 4 is detachably connected with the positioning bottom plate 2, and the adjusting plate 4 is detachably connected with the V-shaped seat 3, so that the adjusting plate 4 with the required thickness is convenient to replace, and the Z-direction adjustment, i.e. the height adjustment, of the V-shaped seat 3 is realized, so that the upper bus deviation value of the detecting core rod 300 is reduced to meet the precision requirement. Alternatively, the height of the V-shaped seat 3 in the Z direction can be adjusted by adding a metal sheet with a corresponding thickness between the adjusting plate 4 and the V-shaped seat 3. The detection assembly 7 comprises a dial indicator 71, the dial indicator 71 is mounted on the machine tool spindle 200, the detection probe 72 of the dial indicator 71 can be elastically abutted against the outer peripheral surface of the detection core rod 300, and when the detection core rod 300 is in different positions, such as different height differences, the detection probe 72 can be elastically changed to obtain corresponding measurement data.
Alternatively, two adjusting bolts 6 are provided, and the two adjusting bolts 6 are disposed at intervals in the X direction.
As shown in fig. 1 and 2, the positioning block 5 is disposed on the left side of the positioning bottom plate 2, the bottom end of the positioning block 5 is fixed on the transverse plate of the L-shaped plate 1, two through holes are disposed on the positioning block 5 along the X direction, and the adjusting bolt 6 passes through the through holes and is in threaded connection with the side surface of the adjusting plate 4. By changing the screwing depth of the adjusting bolt 6, the movement of the adjusting plate 4 in the Y direction can be realized, and the Y-position adjustment of the V-shaped seat 3 can be further realized. The two adjusting bolts 6 can independently or simultaneously adjust the screwing depth, the screwing depth can be independently adjusted, the rotation adjustment of the V-shaped seat 3 can be realized, and when the deviation value exists in the side bus of the detecting core rod 300, the mode of independently adjusting one of the adjusting bolts 6 can be adopted.
It should be noted that the positioning base plate 2 and the adjusting plate 4 may be interchanged, and the two may be used to adjust the installation of the V-shaped seat 3 in the initial X-direction and Y-direction. Wherein the adjusting bolt 6 is connected to the positioning base plate 2 or the adjusting plate 4 which can move in the Y direction. The positioning bottom plate 2, the adjusting plate 4 and the V-shaped seat 3 are integrally connected, so that Y-direction integral adjustment can be realized. Removable attachment means include, but are not limited to, bolting or bolting with a nut.
Optionally, the a-axis positioning accuracy detecting and adjusting device further comprises a gasket 8, the gasket 8 is arranged in the V-shaped opening of the V-shaped seat 3 and is attached to the inner wall of the V-shaped opening, and the detecting core rod 300 is located on the gasket 8.
As shown in fig. 1, the spacer 8 has a certain length in the X direction for supporting the detecting core rod 300 so that the detecting core rod 300 can be self-centering provided in the V-shaped seat 3. The surface of the gasket 8 is set according to the friction force or the supporting force required by the outer peripheral surface of the detecting core rod 300, so that the detecting core rod 300 has a good self-centering effect.
The embodiment of the invention also provides an A-axis positioning precision detection and adjustment method, which comprises the following steps of:
s1, as shown in FIG. 3, first detecting core rods 301 are fixed on two A shafts 100 respectively, positioning accuracy detection is carried out on the two first detecting core rods 301 respectively through a detecting assembly 7, the Z-direction position of the V-shaped seat 3 is adjusted through adjusting the thickness of the adjusting plate 4, and the Y-direction position of the V-shaped seat 3 is adjusted through the screwing depth of the adjusting bolt 6.
The first detecting core rods 301 are short rods, and the first detecting core rods 301 on the two a-axes 100 are independent of each other, and each of the first detecting core rods 301 independently detects the positioning accuracy of the two a-axes 100. The detection unit 7 is fixed to the machine tool spindle 200, and the detection unit 7 continues to detect the a-axis 100 on the right side after detecting the a-axis 100 on the left side by the machine tool spindle 200. Since the two a-axes 100 are detected independently, the present embodiment also needs to perform step S2 for the coaxiality between the two a-axes 100.
S2, fixing a second detection core rod 302 on two A shafts 100 at the same time, detecting the positioning accuracy of the second detection core rod 302 through a detection assembly 7, adjusting the Z-direction position of the V-shaped seat 3 through adjusting the thickness of the adjusting plate 4, and adjusting the Y-direction position of the V-shaped seat 3 through the screwing depth of the adjusting bolt 6.
The second detecting mandrel 302 is a long rod, and two detecting mandrels are respectively supported and fixed on the two a shafts 100, so that coaxiality between the two a shafts can be detected.
According to the method for detecting and adjusting the positioning accuracy of the A shafts, the positioning accuracy of the two A shafts 100 can be respectively adjusted and improved by respectively arranging the two first detecting core rods 301 on the two A shafts 100 for positioning detection; by simultaneously providing the second detecting core rod 302 on the two a-axes 100 for positioning detection, the coaxial positioning accuracy of the two a-axes 100 can be adjusted and improved, thereby improving the positioning accuracy of the a-axes 100 of the machining center workbench.
Optionally, step S1 specifically includes:
s11, the rotation angle of the A axis 100 is 0 degrees, and in a state shown in FIG. 3, the machine tool spindle 200 drives the detection assembly 7 to move and measure at the highest point of the outer circle upper surface of the first detection core rod 301 along the X direction, so as to obtain the maximum value and the minimum value of the upper bus of the first detection core rod 301;
the detection unit 7 performs full-travel movement measurement in the X direction at the highest point of the outer circumferential upper surface of the first detection core rod 301, that is, movement measurement from one end to the other end of the first detection core rod 301. In the moving measurement process, the maximum value and the minimum value of the upper bus bar of the first detecting mandrel 301 can be obtained, and the difference between the maximum value and the minimum value can be calculated, according to the difference, if the difference between the maximum value and the minimum value of the upper bus bar of the first detecting mandrel 301 is greater than 0.01mm, the thickness of the adjusting plate 4 is adjusted until the difference is less than or equal to 0.01mm. The thickness of the adjusting plate 4 may be adjusted by directly replacing the adjusting plate 4 with a corresponding height, or by inserting a fixing metal sheet between the adjusting plate 4 and the positioning base plate 2, or between the adjusting plate 4 and the V-shaped seat 3. By means of the thickness of the adjusting plate 4, it can be understood that the adjusting plate 4 can be of uniform thickness or of gradual thickness, and the adjusting plate 4 is replaced between the positioning base plate 2 and the V-shaped seat 3 after being arranged according to the difference.
S12, the rotation angle of the A axis 100 is 0 degrees, and the machine tool spindle 200 drives the detection assembly 7 to move and measure at the highest point of the outer circle side surface of the first detection core rod 301 along the X direction, so that the maximum value and the minimum value of the side bus of the first detection core rod 301 are obtained; if the difference between the maximum value and the minimum value of the side bus bar of the first detecting core rod 301 is greater than 0.01mm, the screwing depth of the adjusting bolt 6 is adjusted until the difference is 0.01mm or less.
It can be understood that the adjusting bolt 6 can realize the position adjustment of the V-shaped seat 3 in the Y direction, and the adjustment mode of screw thread screwing is easy to control the adjustment precision. And the adjusting bolt 6 can realize the adjustment of the forward and reverse rotation directions, namely the push-pull adjustment of the V-shaped seat 3 in the forward direction and the reverse direction of the Y direction.
And S13, the rotation angle of the A shaft 100 is 0 degrees, the machine tool spindle 200 drives the detection assembly 7 to be positioned at one end of the first detection core rod 301, the A shaft 100 rotates for one circle, and the detection assembly 7 measures the coaxiality value of the first detection core rod 301 and the A shaft 100.
As shown in fig. 4, when the a-axis 100 rotates 90 ° around, the detecting assembly 7 is located at the right end starting point of the first detecting mandrel 301, and the side busbar at this time is the current upper busbar position, and the busbar positions are sequentially detected when the rotation angles are 180 °, 270 ° and 0 °, so as to obtain the maximum value and the minimum value of the highest point of the upper surface of the outer circle of the first detecting mandrel 301, and if the maximum value is equal to the minimum value, the coaxiality of the first detecting mandrel 301 is considered to be acceptable, and the a-axis 100 does not need to be adjusted. If the difference between the maximum value and the minimum value is 0.03mm or more, the difference between the maximum value and the minimum value of the upper bus bar at the highest point of the outer circumferential upper surface of the first detecting core rod 301 is adjusted to be less than 0.03mm by adjusting the thickness of the adjusting plate 4 and the screwing depth of the adjusting bolt 6.
According to the detection method, the side bus and the upper bus on the outer circle with the same diameter are detected in a mode that the A shaft 100 rotates for one circle, and the difference value is calculated, so that the coaxiality of the A shaft 100 to the first detection core rod 301 is reflected, and the coaxiality can be improved through the thickness adjustment of the adjusting plate 4 and the adjustment of the adjusting bolt 6.
After the detection of the a-axis 100 on one side is completed, the a-axis 100 on the other side performs the same steps S11 to S13, so as to realize the detection and adjustment of the individual positioning accuracy of the two a-axes 100.
Optionally, step S2 specifically includes:
s21, as shown in FIG. 5, the rotation angles of the two A shafts 100 are 0 degrees, the detection assembly 7 is positioned at the highest point of the outer circle upper surface of the second detection core rod 302, and the machine tool spindle 200 drives the detection assembly 7 to move along the X direction to measure the maximum value and the minimum value of the upper generatrix of the second detection core rod 302;
the two ends of the second detecting mandrel 302 are respectively fixed on the two a-axes 100, and detect the two a-axes 100 at the same time. The machine tool spindle 200 drives the detection assembly 7 to move from one end to the other end along the X direction at the highest point of the outer circle upper surface of the second detection core rod 302, if the detected maximum value and the detected minimum value are equal, the height of the two A shafts 100 is identical, no adjustment is needed, if the difference value between the maximum value and the minimum value is more than or equal to 0.01mm, the difference value is reduced to be less than 0.01 through the adjusting plate 4 according to the difference value, and the positioning precision requirement is met.
S22, the rotation angles of the two A shafts 100 are 0 degrees, the detection assembly 7 is located at the highest point of the outer circle side surface of the second detection core rod 302, and the machine tool spindle 200 drives the detection assembly 7 to move along the X direction to measure the maximum value and the minimum value of the side bus of the second detection core rod 302;
the method comprises the steps of detecting the front-rear centering position of a second detection core rod 302, namely Y-position accuracy, enabling a machine tool spindle 200 to enable a detection probe 71 of a detection assembly 7 to contact the highest point of the outer circle side surface of the second detection core rod 302, detecting the maximum value and the minimum value of a side bus from one end of the second detection core rod 302 towards the other end, if the maximum value and the minimum value are equal, not needing to be adjusted, enabling the current positioning accuracy to meet the requirement, and if the difference value of the maximum value and the minimum value is greater than or equal to 0.01mm, adjusting the Y-position of a V-shaped seat 3 through an adjusting bolt 6 until the difference value is smaller than 0.01mm.
S23, the two a axes 100 are sequentially rotated by 90 °, 180 °, 270 °, and 0 ° simultaneously, and the deviation value of the upper bus bar of the second detection core rod 302 and the deviation value of the side bus bar of the second detection core rod 302 are sequentially measured.
As shown in fig. 6, the detecting assembly 7 is placed at one end of the second detecting mandrel 302 at the time when the rotation angle of the a-axis 100 is 90 °, the current upper bus bar position data is measured, the a-axis 100 continues to rotate to the rotation angles of 180 °, 270 ° and 0 °, the current upper bus bar position data is detected, the difference between the maximum value and the minimum value is calculated by rotating the a-axis 100 around the four upper bus bar position data, and if the difference between the maximum value and the minimum value is greater than or equal to 0.03mm, the difference between the maximum value and the minimum value is smaller than 0.03mm by adjusting the thickness of the adjusting plate 4 and the screwing depth of the adjusting bolt 6. It will be appreciated that, in the case of a positioning detection accuracy, a plurality of rotation angles and detection positions of the a-axis 100 may be detected as many times as necessary.
By the aid of the detection and adjustment device and the detection and adjustment method for the positioning accuracy of the A shaft 100, the problems of insufficient accuracy and low machining efficiency in the positioning process of the A shaft 100 on an existing machining center machine tool can be solved, positioning accuracy of the A shaft 100 can be improved, and machining rejection rate caused by low workpiece positioning is reduced.
It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the invention. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.

Claims (10)

  1. Axis A positioning accuracy detects adjusting device, its characterized in that includes:
    the L-shaped plates (1) are arranged, the two L-shaped plates (1) are respectively arranged on the two A shafts (100), and vertical plates of the L-shaped plates (1) are fixedly connected with the A shafts (100);
    the positioning bottom plate (2) is positioned on the transverse plate of the L-shaped plate (1);
    the V-shaped seat (3), the V-shaped seat (3) is arranged on the positioning bottom plate (2), and the detection core rod (300) is arranged in a V-shaped opening of the V-shaped seat (3);
    the adjusting plate (4) is arranged between the positioning bottom plate (2) and the V-shaped seat (3) and is fixedly connected with the positioning bottom plate (2) and the V-shaped seat (3), and the adjusting plate (4) is used for adjusting the Z-direction position of the V-shaped seat (3);
    the positioning block (5) is fixed on the L-shaped plate (1) and is positioned at one side of the positioning bottom plate (2) along the Y direction;
    the adjusting bolt (6) penetrates through the positioning block (5) and is connected to the side face of the adjusting plate (4) in a threaded mode, and the adjusting bolt (6) is used for adjusting the Y-direction position of the V-shaped seat (3);
    the detection assembly (7), the detection assembly (7) is installed on the machine tool main shaft (200), and the machine tool main shaft (200) can drive the detection assembly (7) to move along the X direction to measure the deviation value of the upper bus and the side bus of the detection core rod (300).
  2. 2. The a-axis positioning accuracy detecting and adjusting device according to claim 1, wherein two adjusting bolts (6) are provided, and the two adjusting bolts (6) are arranged at intervals along the X-direction.
  3. 3. The device for detecting and adjusting the positioning accuracy of the A-axis according to claim 1, further comprising a gasket (8), wherein the gasket (8) is arranged in the V-shaped opening of the V-shaped seat (3) and is attached to the inner wall of the V-shaped opening, and the detecting core rod (300) is positioned on the gasket (8).
  4. 4. The A-axis positioning accuracy detection and adjustment device according to claim 1, wherein a detachable connection mode is adopted between the V-shaped seat (3) and the positioning bottom plate (2), and a detachable connection mode is adopted between the positioning bottom plate (2) and the transverse plate of the L-shaped plate (1).
  5. An a-axis positioning accuracy detection adjustment method, characterized by an a-axis positioning accuracy detection adjustment device according to any one of claims 1 to 4, comprising the steps of:
    s1, respectively fixing first detection core rods (301) on two A shafts (100), respectively detecting the positioning accuracy of the two first detection core rods (301) through a detection assembly (7), adjusting the Z-direction position of a V-shaped seat (3) through adjusting the thickness of an adjusting plate (4), and adjusting the Y-direction position of the V-shaped seat (3) through the screwing depth of an adjusting bolt (6);
    s2, a second detection core rod (302) is fixed on the two A shafts (100) at the same time, the second detection core rod (302) is detected through the detection assembly (7), the Z-direction position of the V-shaped seat (3) is adjusted through adjusting the thickness of the adjusting plate (4), and the Y-direction position of the V-shaped seat (3) is adjusted through the screwing depth of the adjusting bolt (6).
  6. 6. The method for detecting and adjusting positioning accuracy of a axis according to claim 5, wherein step S1 specifically comprises:
    s11, the rotation angle of the A shaft (100) is 0 degrees, and a machine tool main shaft (200) drives the detection assembly (7) to move and measure at the highest point of the outer circle upper surface of the first detection core rod (301) along the X direction, so that the maximum value and the minimum value of the upper bus of the first detection core rod (301) are obtained;
    s12, the rotation angle of the A shaft (100) is 0 degrees, and the machine tool main shaft (200) drives the detection assembly (7) to move and measure at the highest point of the outer circle side surface of the first detection core rod (301) along the X direction to obtain the maximum value and the minimum value of the side bus of the first detection core rod (301);
    s13, the rotation angle of the A shaft (100) is 0 degree, the machine tool spindle (200) drives the detection assembly (7) to be located at one end of the first detection core rod (301), the A shaft (100) rotates for one circle, and the detection assembly (7) measures the coaxiality value of the first detection core rod (301) and the A shaft (100).
  7. 7. The a-axis positioning accuracy detection adjustment method according to claim 6, characterized in that in step S11, if the difference between the maximum value and the minimum value of the upper bus bar of the first detection core rod (301) is greater than 0.01mm, the thickness of the adjustment plate (4) is adjusted until the difference is equal to or less than 0.01mm.
  8. 8. The a-axis positioning accuracy detection adjustment method according to claim 6, characterized in that in step S12, if the difference between the maximum value and the minimum value of the side bus bar of the first detection core rod (301) is greater than 0.01mm, the screwing depth of the adjustment bolt (6) is adjusted until the difference is equal to or less than 0.01mm.
  9. 9. The a-axis positioning accuracy detection adjustment method according to claim 6, wherein in step S13, when the a-axis (100) rotates one revolution, the detection assembly (7) measures that the rotation angle of the a-axis (100) is 90 °, 180 °, 270 ° and 0 °, the maximum value and the minimum value of the highest point of the outer circumferential upper surface of the first detection core rod (301) are adjusted by adjusting the thickness of the adjustment plate (4) and the screwing depth of the adjustment bolt (6), and the difference between the maximum value and the minimum value of the highest point of the outer circumferential upper surface of the first detection core rod (301) is less than 0.03mm.
  10. 10. The method for detecting and adjusting positioning accuracy of a axis according to claim 5, wherein step S2 specifically comprises:
    the rotation angles of the two A shafts (100) are 0 degrees, the detection assembly (7) is located at the highest point of the upper surface of the outer circle of the second detection core rod (302), and the machine tool spindle (200) drives the detection assembly (7) to move along the X direction to measure the maximum value and the minimum value of the upper bus of the second detection core rod (302);
    the rotation angles of the two A shafts (100) are 0 degrees, the detection assembly (7) is located at the highest point of the outer circle side surface of the second detection core rod (302), and the machine tool spindle (200) drives the detection assembly (7) to move along the X direction to measure the maximum value and the minimum value of the side bus of the second detection core rod (302);
    the two A shafts (100) are rotated by 90 degrees, 180 degrees, 270 degrees and 0 degree simultaneously in sequence, and the deviation value of the upper bus bar of the second detection core rod (302) and the deviation value of the side bus bar of the second detection core rod (302) are measured in sequence.
CN202310458617.7A 2023-04-25 2023-04-25 Axis A positioning precision detection and adjustment device and detection and adjustment method Pending CN116442002A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310458617.7A CN116442002A (en) 2023-04-25 2023-04-25 Axis A positioning precision detection and adjustment device and detection and adjustment method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310458617.7A CN116442002A (en) 2023-04-25 2023-04-25 Axis A positioning precision detection and adjustment device and detection and adjustment method

Publications (1)

Publication Number Publication Date
CN116442002A true CN116442002A (en) 2023-07-18

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Application Number Title Priority Date Filing Date
CN202310458617.7A Pending CN116442002A (en) 2023-04-25 2023-04-25 Axis A positioning precision detection and adjustment device and detection and adjustment method

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Country Link
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