CN109940463B - On-machine detection clamp for machining size of quenched steel die for milling machine and control method - Google Patents
On-machine detection clamp for machining size of quenched steel die for milling machine and control method Download PDFInfo
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- CN109940463B CN109940463B CN201910049726.7A CN201910049726A CN109940463B CN 109940463 B CN109940463 B CN 109940463B CN 201910049726 A CN201910049726 A CN 201910049726A CN 109940463 B CN109940463 B CN 109940463B
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Abstract
An on-machine detection clamp and a control method for the machining size of a quenched steel die for a milling machine relate to an on-machine detection clamp and a control method, in particular to an on-machine detection clamp and a control method for the machining size of a quenched steel die for a milling machine. The invention aims to solve the problems that the machining size of the quenched steel die cannot be directly measured on a numerical control machine tool, the automation degree is low, and the adjustable range is small. The clamp comprises a supporting beam frame, two trepanning hinge lugs, two compression bolt groups, a plurality of hinge lug fixing screw groups, a semicircular fixing seat, a plurality of locking bolt groups and a semicircular clamping ring; the invention also comprises a left X-direction moving mechanism, a right X-direction moving mechanism, a Y-direction moving mechanism, a left Z-direction angle deviation mechanism, a right Z-direction angle deviation mechanism, a left camera, a first servo motor, a distance measuring sensor, a right camera and a second servo motor. The invention belongs to the field of machining.
Description
Technical Field
The invention relates to an on-machine detection fixture and a control method, in particular to an on-machine detection fixture and a control method for the machining size of a quenched steel die for a milling machine, and belongs to the field of machining.
Background
With the advance of China manufacturing 2025, quenched steel materials are widely applied to the industries of aerospace, petrochemical industry, metallurgy, food and the like; in recent years, with the rapid development of the automobile industry, the replacement speed of the automobile panel die is accelerated, and most of large automobile panel dies are made of hardened steel materials, so that the timely detection of the dimensional accuracy of the hardened steel die has important significance for improving the quality of automobile panel products and the processing efficiency of die steel, reducing the production cost and improving the economic benefit of the products.
The numerical control machine tool needs to measure the machining size of the quenched steel material for many times during high-speed cutting machining of the quenched steel material so as to ensure that the size of the quenched steel die to be machined reaches the size precision required by a drawing; however, when the size of the quenched steel die to be measured is large, the workpiece to be measured is generally carried to a specific measuring workshop for measurement, a large amount of manpower and material resources are wasted due to reciprocating loading, unloading and transportation, and the positioning reference of the workpiece is inconsistent due to repeated repositioning, so that the workpiece has a form and position error, the effective working time of workers is wasted, and the labor production efficiency is reduced; at present, the clamp which can detect the dimensional accuracy of the quenched steel die directly on a numerical control machine tool is very little; the following problems are common to the clamps based on industrial cameras for measurement: firstly, the measurement efficiency is low, and if the shooting position needs to be changed in the shooting process, a photographer needs to repeatedly adjust the camera support again, so that the effective shooting time is wasted; secondly, the degree of automation is low, most of clamps are manually operated, and the labor can not be effectively saved; and thirdly, the positioning precision is low, the stability of the clamp is poor, the two cameras are difficult to be symmetrically distributed as much as possible and reach the optimal measurement attitude position, and the position precision of the two industrial cameras directly influences the effective view field and the effective focal length of the cameras, so that the precision of the acquired pictures is influenced, and the measurement error of the system is influenced.
Disclosure of Invention
The invention provides an on-machine detection clamp and a control method for the machining size of a quenched steel die for a milling machine, and aims to solve the problems that the machining size of the quenched steel die cannot be directly measured on a numerical control machine tool, the automation degree is low, and the adjustable range is small.
The technical scheme adopted by the invention for solving the problems is as follows: the clamp comprises a supporting beam frame, two trepanning hinge lugs, two compression bolt groups, a plurality of hinge lug fixing screw groups, a semicircular fixing seat, a plurality of locking bolt groups and a semicircular clamping ring; the invention also comprises a left X-direction moving mechanism, a right X-direction moving mechanism, a Y-direction moving mechanism, a left Z-direction angle deviation mechanism, a right Z-direction angle deviation mechanism, a left camera, a first servo motor, a distance measuring sensor, a right camera and a second servo motor;
the left X-direction moving mechanism is installed at the left end of the strut frame, the right X-direction moving mechanism is installed at the right end of the strut frame, the left camera is installed on the left X-direction moving mechanism through the left Z-direction angle deviation mechanism, the right camera is installed on the right X-direction moving mechanism through the right Z-direction angle deviation mechanism, the first servo motor is installed on the left X-direction moving mechanism, and the second servo motor is installed on the right X-direction moving mechanism; y is installed at the lower surface of a beam support to moving mechanism, and two trepanning hinge eyes are parallel arrangement side by side, the one end of every trepanning hinge eye through a compress bolt group with Y is connected to moving mechanism, and the other end of every trepanning hinge eye is connected with semi-circular fixing base through two at least hinge eye set screw, and semi-circular fixing base is connected with semi-circular snap ring through a plurality of locking bolt groups, and distance measuring sensor installs the upper surface at the beam support.
Furthermore, the left X-direction moving mechanism and the right X-direction moving mechanism respectively comprise a ball screw, a plurality of optical axis guide rails, a motor base, an F-shaped sliding block, a flexible transmission connector, a ball bearing and a plurality of first screw groups;
one end of a ball screw is rotatably connected with a support beam frame, the other end of the ball screw is connected with a motor base through a ball bearing, a first servo motor is fixedly connected with the motor base of a left X-direction moving mechanism through a first screw group, a rotating shaft of the first servo motor is connected with the other end of the ball screw of the left X-direction moving mechanism through a flexible transmission connector of the left X-direction moving mechanism, a second servo motor is fixedly connected with the motor base of a right X-direction moving mechanism through a first screw group, a rotating shaft of the second servo motor is connected with the other end of the ball screw of the right X-direction moving mechanism through a flexible transmission connector of the right X-direction moving mechanism, the motor base is connected with the support beam frame through an optical axis guide rail, an F-shaped sliding block is sleeved on the ball screw and the optical axis guide rail and can linearly reciprocate along the optical axis guide rail, and the F-shaped sliding block is connected with the ball screw through a thread, the Z-direction angle deviation mechanism is installed on the F-shaped sliding block.
Furthermore, the left Z-direction angle deviation mechanism and the right Z-direction angle deviation mechanism respectively comprise an angle measurement sensor, a plurality of camera fixing screw groups, a plurality of second screw groups, a flexible torsion connector, a fulcrum shaft and a camera tray, the left Z-direction angle deviation mechanism further comprises a third servo motor, and the right Z-direction angle deviation mechanism further comprises a fourth servo motor;
a third servo motor is fixedly arranged on an F-shaped sliding block of a left X-direction moving mechanism through a second screw group, a rotating shaft of the third servo motor is connected with one end of a supporting shaft through a flexible torsion connector, the other end of the supporting shaft is fixedly connected with the inner side face of a camera tray, a left camera is connected with the outer side face of the camera tray of a left Z-direction angle deviation mechanism through a camera fixing screw component, a fourth servo motor is fixedly arranged on the F-shaped sliding block of a right X-direction moving mechanism through the second screw group, a rotating shaft of the fourth servo motor is connected with one end of the supporting shaft through the flexible torsion connector, the other end of the supporting shaft is fixedly connected with the inner side face of the camera tray, a right camera is connected with the outer side face of the camera tray of the right Z-direction angle deviation mechanism through the camera fixing screw component, and an angle measuring sensor is arranged on the outer side face of the camera tray.
Furthermore, the Y-direction moving mechanism comprises a double-hinge lug seat, two dovetail guide rails, two dovetail slide blocks, a precision slide block, a precision ball screw and a torsion handle;
two dovetail sliders are arranged in parallel side by side, the upper surface of each dovetail slider is fixedly connected with the lower surface of the support beam frame, two dovetail guide rails are fixedly mounted on the upper surface of the double-hinge lug seat side by side, each dovetail slider is inserted into the corresponding dovetail guide rail, the precise slider is fixedly mounted on the lower surface of the support beam frame, one end of the precise ball screw penetrates through a bearing on the double-hinge lug seat and is connected with the torsion handle, and the other end of the precise ball screw is inserted into a screw hole in the precise slider.
Furthermore, the inner side surfaces of the semicircular fixed seat and the semicircular clamping ring are provided with wear-resistant anti-slip pads.
Furthermore, a level gauge is arranged on the lower part of the front surface of the beam support frame.
The control method comprises the following specific steps:
step one, a programmable controller respectively reads preparation signals of a first servo driver, a second servo driver, a Le and a Lf, wherein the Le represents an initial distance between an F-shaped sliding block and a distance measuring sensor, which are driven by the first servo driver, and the Lf represents an initial distance between the F-shaped sliding block and the distance measuring sensor, which are driven by the second servo driver, the irradiation direction of a photosensitive hole of the angle measuring sensor is set to be vertical to the horizontal plane direction, and the angle measuring sensor is initialized;
setting the distance Lc between the optimal measurement attitude position of the F-shaped sliding block driven by the first servo motor and the distance measuring sensor, setting the distance Ld between the optimal measurement attitude position of the F-shaped sliding block driven by the second servo motor and the distance measuring sensor, setting the optimal measurement angle theta 1 of the left camera and the optimal measurement angle theta 2 of the right camera respectively;
the required rotating angles of the first servo motor and the second servo motor can be calculated by a formula 1-1:
in the formula 1-1, d represents the nominal diameter of the ball screw, and β represents the helix angle of the ball screw; i.e. ijDenotes a transmission ratio, Δ L, between an output shaft of the j-th servomotor and the ball screwjIndicates the distance, omega, that the F-shaped slide block driven by the j-th servo motor needs to movejRepresents the required rotation angle of the j servo motor, wherein Delta L1＝|Le-Lc|、ΔL2＝|Lf-Ld|(j＝1，2)；
The required rotating angles of the third servo motor and the fourth servo motor can be calculated by a formula:
in the formula 2-2, ij' represents a transmission ratio from an output shaft of the No. j servo motor to a fulcrum shaft, thetajRepresents the optimal measurement angle, omega, of the camera carried by the No. j servo motorjThe angle of the j-th servo motor required to rotate is indicated, (j is 3 and 4);
the number m of photoelectric pulse signals which are required to be sent to the j servo driver by the programmable controllerjCalculated from equations 3-3:
in the formula 3-3，hjResolution, k, of encoder of No. j servo motorjIndicates the frequency multiplication coefficient, omega, of the j servo motor encoderjThe j represents the required rotation angle of the j-th servo motor, and j is 1, 2, 3 and 4;
pressing an acquisition pause key, stopping sending a pulse signal to the driving unit by the programmable controller, and stopping the movement of the servo motor;
and step four, pressing a collection reset key, sending a reset pulse signal to the drive control unit by the programmable controller, and returning the servo motor to the pre-calibrated original point position.
The invention has the beneficial effects that: the clamp can be directly installed on a tool apron of a numerical control machine tool for machining the hardened steel die, so that the machining size of the hardened steel die can be measured on machine, and manpower and material resources wasted by carrying workpieces to and fro can be saved. Meanwhile, the spatial positions of the two cameras can be automatically adjusted, so that the two cameras are symmetrically distributed as much as possible and reach the optimal measurement attitude position, the accuracy of the whole quenched steel die machining dimension measurement system is improved, and the system has the advantages of simplicity and convenience in operation, high automation degree, wide adjustable range and strong stability.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a bottom view of the present invention;
FIG. 4 is a schematic view of the present invention as mounted on a machine tool;
FIG. 5 is a diagram of a model of the optimal measured pose of the left and right cameras;
FIG. 6 is a control system schematic;
38-bed in fig. 4; 39-X direction moving platform; a 40-Y direction moving platform; 41-a tool apron; and moving the platform in the 42-Z direction.
Detailed Description
The first embodiment is as follows: the embodiment is described with reference to fig. 1 to 6, and the hardened steel die machining dimension on-machine detection jig for the milling machine according to the embodiment includes a support beam frame 4, two trepanning hinge eyes 18, two compression bolt groups 32, a plurality of hinge eye fixing screw groups 33, a semicircular fixing seat 34, a plurality of locking bolt groups 35 and a semicircular snap ring 36; the embodiment also comprises a left X-direction moving mechanism, a right X-direction moving mechanism, a Y-direction moving mechanism, a left Z-direction angle deviation mechanism, a right Z-direction angle deviation mechanism, a left camera 7, a first servo motor 9, a distance measuring sensor 12, a right camera 14 and a second servo motor 16;
the left X-direction moving mechanism is installed at the left end of the strut frame 4, the right X-direction moving mechanism is installed at the right end of the strut frame 4, the left camera 7 is installed on the left X-direction moving mechanism through the left Z-direction angle deviation mechanism, the right camera 14 is installed on the right X-direction moving mechanism through the right Z-direction angle deviation mechanism, the first servo motor 9 is installed on the left X-direction moving mechanism, and the second servo motor 16 is installed on the right X-direction moving mechanism; the Y-direction moving mechanism is installed on the lower surface of the strut frame 4, the two trepanning hinge eyes 18 are arranged in parallel side by side, one end of each trepanning hinge eye 18 is connected with the Y-direction moving mechanism through a compression bolt group 32, the other end of each trepanning hinge eye 18 is connected with a semicircular fixed seat 34 through at least two hinge eye fixed screw groups 33, the semicircular fixed seat 34 is connected with a semicircular snap ring 36 through a plurality of locking bolt groups 35, and the ranging sensor 12 is installed on the upper surface of the strut frame 4;
the on-machine detection clamp for the machining size of the quenched steel die for the milling machine further comprises a control system, wherein the control system comprises a programmable controller, and a digital signal acquisition unit, a driving control unit and an analog signal acquisition unit which are connected with the programmable controller; the digital signal acquisition unit is connected with an acquisition start key, an acquisition pause key and an acquisition reset key, the drive control unit is connected with a driver for driving the servo motor, and the analog signal acquisition unit is connected with two distance measuring sensors 12 and two angle measuring sensors 10.
The second embodiment is as follows: the present embodiment is described with reference to fig. 1 to 6, and the left X-direction moving mechanism and the right X-direction moving mechanism of the machine inspection jig for machining dimension of hardened steel mold for milling machine according to the present embodiment each include a ball screw 5, a plurality of optical axis guide rails 6, a motor base 8, an F-shaped slider 11, a flexible transmission connector 15, a ball bearing 17, and a plurality of first screw groups 25;
one end of a ball screw 5 is rotatably connected with a support beam frame 4, the other end of the ball screw 5 is connected with a motor base 8 through a ball bearing 17, a first servo motor 9 is fixedly connected with the motor base 8 of a left X-direction moving mechanism through a first screw group 25, the rotating shaft of the first servo motor 9 is connected with the other end of the ball screw 5 of the left X-direction moving mechanism through a flexible transmission connector 15 of the left X-direction moving mechanism, a second servo motor 16 is fixedly connected with the motor base 8 of a right X-direction moving mechanism through a first screw group 25, the rotating shaft of the second servo motor 16 is connected with the other end of the ball screw 5 of the right X-direction moving mechanism through a flexible transmission connector 15 of the right X-direction moving mechanism, the motor base 8 is connected with the support beam frame 4 through an optical axis guide rail 6, an F-shaped sliding block 11 is sleeved on the ball screw 5 and the optical axis guide rail 6, the F-shaped sliding block 11 can linearly reciprocate along the optical axis guide rail 6, the F-shaped sliding block 11 is connected with the ball screw 5 through threads, and the Z-direction angle deviation mechanism is installed on the F-shaped sliding block 11.
Other components and connections are the same as those in the first embodiment.
The third concrete implementation mode: the present embodiment is described with reference to fig. 1 to 6, and each of the left-side Z-direction angle deviation mechanism and the right-side Z-direction angle deviation mechanism of the machine-testing jig for machining dimension of hardened steel mold for milling machine according to the present embodiment includes an angle measuring sensor 10, a plurality of camera fixing screw groups 24, a plurality of second screw groups 26, a flexible torsion connector 28, a support shaft 29, and a camera tray 30, the left-side Z-direction angle deviation mechanism further includes a third servomotor 27, and the right-side Z-direction angle deviation mechanism further includes a fourth servomotor 31;
the third servo motor 27 is fixedly mounted on the F-shaped slider 11 of the left X-direction moving mechanism through a second screw group 26, the rotating shaft of the third servo motor 27 is connected with one end of a support shaft 29 through a flexible torsion connector 28, the other end of the support shaft 29 is fixedly connected with the inner side surface of a camera tray 30, the left camera 7 is connected with the outer side surface of the camera tray 30 of the left Z-direction angle deviation mechanism through a camera fixing screw assembly 24, the fourth servo motor 31 is fixedly mounted on the F-shaped slider 11 of the right X-direction moving mechanism through the second screw group 26, the rotating shaft of the fourth servo motor 27 is connected with one end of the support shaft 29 through the flexible torsion connector 28, the other end of the support shaft 29 is fixedly connected with the inner side surface of the camera tray 30, the right camera 14 is connected with the outer side surface of the camera tray 30 of the right Z-direction angle deviation mechanism through the camera fixing screw assembly 24, and the angle measuring sensor 10 is mounted on the outer side surface of the camera tray 30.
Other components and connection relationships are the same as those in the first or second embodiment.
The fourth concrete implementation mode: the embodiment is described with reference to fig. 1 to 6, and the Y-direction moving mechanism of the quenched steel die machining dimension on-machine detection fixture for the milling machine according to the embodiment includes a double-hinge lug seat 1, two dovetail guide rails 2, two dovetail sliders 3, a precision slider 13, a precision ball screw 20 and a torsion handle 21;
two dovetail sliders 3 are arranged in parallel side by side, the upper surface of each dovetail slider 3 is fixedly connected with the lower surface of the supporting beam frame 4, two dovetail guide rails 2 are fixedly installed on the upper surface of the double-hinge lug seat 1 side by side, each dovetail slider 3 is inserted into the corresponding dovetail guide rail 2, the precise slider 13 is fixedly installed on the lower surface of the supporting beam frame 4, one end of the precise ball screw 20 penetrates through a bearing on the double-hinge lug seat 1 and is connected with the torsion handle 21, and the other end of the precise ball screw 20 is inserted into a screw hole in the precise slider 13.
Other components and connections are the same as those in the first embodiment.
The fifth concrete implementation mode: referring to fig. 1 to 6, the present embodiment will be described, and the hardened steel mold for milling machine according to the present embodiment is provided with wear-resistant anti-slip pads 37 on the inner side surfaces of the semicircular fixing seat 34 and the semicircular snap ring 36 of the mechanical detection fixture.
Other components and connections are the same as those in the first embodiment.
The sixth specific implementation mode: the present embodiment will be described with reference to fig. 1 to 6, and a level gauge 19 is attached to a lower portion of the front surface of the support frame 4 of the machine inspection jig in the hardened steel mold machining dimension for a milling machine according to the present embodiment.
Other components and connections are the same as those in the first embodiment.
The seventh embodiment: the embodiment is described with reference to fig. 1 to 6, and the specific steps of the method for on-machine detection and control of the machining dimension of the hardened steel die for the milling machine according to the embodiment are as follows:
step one, a programmable controller respectively reads preparation signals of a first servo driver, a second servo driver and a distance measuring sensor, wherein the first servo driver 9, the second servo driver 16, Le and Lf are read by the programmable controller, Le represents an initial distance between an F-shaped sliding block 11 and the distance measuring sensor 12 which are driven by the first servo driver 9, Lf represents an initial distance between the F-shaped sliding block 11 and the distance measuring sensor 12 which are driven by the second servo driver 16, the irradiation direction of a photosensitive hole of an angle measuring sensor 10 is set to be vertical to the horizontal plane direction, and the angle measuring sensor 10 is initialized;
setting the distance Lc between the optimal measurement attitude position of the F-shaped sliding block 11 driven by the first servo motor 9 and the distance measuring sensor 12, setting the distance Ld between the optimal measurement attitude position of the F-shaped sliding block 11 driven by the second servo motor 16 and the distance measuring sensor 12, setting the optimal measurement angle theta 1 of the left camera 7 and the optimal measurement angle theta 2 of the right camera 14 respectively;
the required rotation angles of the first servo motor 9 and the second servo motor 16 can be calculated by the formula (1-1):
in the formula (1-1), d represents the nominal diameter of the ball screw 5, and β represents the helix angle of the ball screw 5; i.e. ijDenotes a transmission ratio, Δ L, between the output shaft of the j-th servomotor and the ball screw 5jIndicates the distance, omega, that the F-shaped slide block 11 driven by the j-th servo motor needs to movejRepresents the required rotation angle of the j servo motor, wherein Delta L1＝|Le-Lc|、ΔL2＝|Lf-Ld|(j＝1，2)；
The required rotation angles of the third servo motor 27 and the fourth servo motor 31 can be calculated by the formula (2-2):
in the formula (2-2), ij' represents a transmission ratio between an output shaft of the j-th servomotor and the fulcrum shaft 29, thetajRepresents the optimal measurement angle, omega, of the camera carried by the No. j servo motorjThe angle of the j-th servo motor required to rotate is indicated, (j is 3 and 4);
the number m of photoelectric pulse signals which are required to be sent to the j servo driver by the programmable controllerjCalculated from equation (3-3):
in the formula (3-3), hjResolution, k, of encoder of No. j servo motorjIndicates the frequency multiplication coefficient, omega, of the j servo motor encoderjThe angle of the j-th servo motor required to rotate is indicated, (j is 1, 2, 3 and 4);
pressing an acquisition pause key, stopping sending a pulse signal to the driving unit by the programmable controller, and stopping the movement of the servo motor;
and step four, pressing a collection reset key, sending a reset pulse signal to the drive control unit by the programmable controller, and returning the servo motor to the pre-calibrated original point position.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (5)
1. The machining size on-machine detection clamp for the quenched steel die for the milling machine comprises a supporting beam frame (4), two trepanning hinge lugs (18), two compression bolt groups (32), a plurality of hinge lug fixing screw groups (33), a semicircular fixed seat (34), a plurality of locking bolt groups (35) and a semicircular snap ring (36); the method is characterized in that: the on-machine detection clamp for the machining size of the quenched steel die for the milling machine further comprises a left X-direction moving mechanism, a right X-direction moving mechanism, a Y-direction moving mechanism, a left Z-direction angle deviation mechanism, a right Z-direction angle deviation mechanism, a left camera (7), a first servo motor (9), a distance measurement sensor (12), a right camera (14) and a second servo motor (16);
the left X-direction moving mechanism is installed at the left end of the support frame (4), the right X-direction moving mechanism is installed at the right end of the support frame (4), the left camera (7) is installed on the left X-direction moving mechanism through the left Z-direction angle deviation mechanism, the right camera (14) is installed on the right X-direction moving mechanism through the right Z-direction angle deviation mechanism, the first servo motor (9) is installed on the left X-direction moving mechanism, and the second servo motor (16) is installed on the right X-direction moving mechanism; the Y-direction moving mechanism is installed on the lower surface of the beam support frame (4), the two trepanning hinge eyes (18) are arranged in parallel side by side, one end of each trepanning hinge eye (18) is connected with the Y-direction moving mechanism through a compression bolt group (32), the other end of each trepanning hinge eye (18) is connected with a semicircular fixed seat (34) through at least two hinge eye fixed screw groups (33), the semicircular fixed seat (34) is connected with a semicircular snap ring (36) through a plurality of locking bolt groups (35), and the ranging sensor (12) is installed on the upper surface of the beam support frame (4); the left X-direction moving mechanism and the right X-direction moving mechanism respectively comprise a ball screw (5), a plurality of optical axis guide rails (6), a motor base (8), an F-shaped sliding block (11), a flexible transmission connector (15), a ball bearing (17) and a plurality of first screw groups (25);
one end of a ball screw (5) is rotationally connected with a beam support frame (4), the other end of the ball screw (5) is connected with a motor base (8) through a ball bearing (17), a first servo motor (9) is fixedly connected with the motor base (8) of a left X-direction moving mechanism through a first screw group (25), the rotating shaft of the first servo motor (9) is fixedly connected with the other end of the ball screw (5) of the left X-direction moving mechanism through a flexible transmission connector (15) of the left X-direction moving mechanism, a second servo motor (16) is fixedly connected with the motor base (8) of a right X-direction moving mechanism through the first screw group (25), the rotating shaft of the second servo motor (16) is connected with the other end of the ball screw (5) of the right X-direction moving mechanism through a flexible transmission connector (15) of the right X-direction moving mechanism, the motor base (8) is connected with the beam support frame (4) through an optical axis guide rail (6), the F-shaped sliding block (11) is sleeved on the ball screw (5) and the optical axis guide rail (6), the F-shaped sliding block (11) can linearly reciprocate along the optical axis guide rail (6), the F-shaped sliding block (11) is connected with the ball screw (5) through threads, and the Z-direction angle deviation mechanism is installed on the F-shaped sliding block (11); the left Z-direction angle deviation mechanism and the right Z-direction angle deviation mechanism respectively comprise an angle measuring sensor (10), a plurality of camera fixing screw assemblies (24), a plurality of second screw groups (26), a flexible torsion connector (28), a support shaft (29) and a camera tray (30), the left Z-direction angle deviation mechanism further comprises a third servo motor (27), and the right Z-direction angle deviation mechanism further comprises a fourth servo motor (31);
a third servo motor (27) is fixedly arranged on an F-shaped sliding block (11) of the left X-direction moving mechanism through a second screw group (26), the rotating shaft of the third servo motor (27) is connected with one end of a supporting shaft (29) through a flexible torsion connector (28), the other end of the supporting shaft (29) is fixedly connected with the inner side surface of a camera tray (30), a left camera (7) is connected with the outer side surface of the camera tray (30) of the left Z-direction angle deviation mechanism through a camera fixing screw component (24), a fourth servo motor (31) is fixedly arranged on the F-shaped sliding block (11) of the right X-direction moving mechanism through the second screw group (26), the rotating shaft of the fourth servo motor (31) is connected with one end of the supporting shaft (29) through the flexible torsion connector (28), the other end of the supporting shaft (29) is fixedly connected with the inner side surface of the camera tray (30), and a right camera (14) is fixedly connected with the camera tray (11) of the right Z-direction angle deviation mechanism through the camera fixing screw component (24) The outer side surfaces of the discs (30) are connected, and the angle measuring sensor (10) is installed on the outer side surface of the camera tray (30).
2. The quenched steel die machining dimension on-machine detection clamp for the milling machine according to claim 1, characterized in that: the Y-direction moving mechanism comprises a double-hinge-lug seat (1), two dovetail-shaped guide rails (2), two dovetail-shaped sliding blocks (3), a precise sliding block (13), a precise ball screw (20) and a twisting handle (21);
two dovetail slider (3) parallel arrangement side by side, the upper surface of every dovetail slider (3) all is connected with the lower surface fixed connection of a girder frame (4), two dovetail guide rail (2) fixed mounting side by side are on the upper surface of two hinge ear seats (1), every dovetail slider (3) all cartridge is in corresponding one dovetail guide rail (2), accurate slider (13) fixed mounting is in the lower surface of a girder frame (4), bearing and twist grip (21) on two hinge ear seats (1) are passed to accurate ball (20) one end are connected, the other end cartridge of accurate ball (20) is in the screw on accurate slider (13).
3. The quenched steel die machining dimension on-machine detection clamp for the milling machine according to claim 1, characterized in that: the inner side surfaces of the semicircular fixed seat (34) and the semicircular clamping ring (36) are respectively provided with a wear-resistant anti-slip pad (37).
4. The quenched steel die machining dimension on-machine detection clamp for the milling machine according to claim 1, characterized in that: a level gauge (19) is arranged at the lower part of the front surface of the supporting beam frame (4).
5. A control method for on-machine inspection of a machined dimension of a hardened steel die for a milling machine by using the jig of claim 1, characterized by comprising: the on-machine detection control method for the machining size of the quenched steel die for the milling machine comprises the following specific steps:
step one, a programmable controller respectively reads preparation signals of a first servo driver, a second servo driver, a first servo motor (9), a second servo motor (16), Le and Lf, wherein Le represents an initial distance between an F-shaped sliding block (11) driven by the first servo motor (9) and a distance measuring sensor (12), Lf represents an initial distance between the F-shaped sliding block (11) driven by the second servo motor (16) and the distance measuring sensor (12), the irradiation direction of a photosensitive hole of an angle measuring sensor (10) is set to be vertical to the horizontal plane direction, and the angle measuring sensor (10) is initialized;
setting the distance Lc between the optimal measurement attitude position of the F-shaped sliding block (11) driven by the first servo motor (9) and the distance measuring sensor (12), the distance Ld between the optimal measurement attitude position of the F-shaped sliding block (11) driven by the second servo motor (16) and the distance measuring sensor (12), the optimal measurement angle theta 1 of the left camera (7), and the optimal measurement angles theta 2 of the right camera (14);
the required rotating angles of the first servo motor (9) and the second servo motor (16) can be calculated by a formula (1-1):
in the formula (1-1), d represents the nominal diameter of the ball screw (5), and beta represents the helical angle of the ball screw (5); i.e. ijRepresents the transmission ratio between the output shaft of the No. j servo motor and the ball screw (5), Delta LjIndicates the distance, omega, that the F-shaped slide block (11) driven by the j-th servo motor needs to movejRepresents the required rotation angle of the j servo motor, wherein Delta L1＝|Le-Lc|、ΔL2＝|Lf-Ld|(j＝1，2)；
The required rotating angles of the third servo motor (27) and the fourth servo motor (31) can be calculated by a formula (2-2):
in the formula (2-2), ij'represents a transmission ratio between an output shaft of a No. j servo motor and a fulcrum shaft (29)' thetajRepresents the optimal measurement angle, omega, of the camera carried by the No. j servo motorjThe angle of the j-th servo motor required to rotate is indicated, (j is 3 and 4);
the number m of photoelectric pulse signals which are required to be sent to the j servo driver by the programmable controllerjCalculated from equation (3-3):
in the formula (3-3), hjResolution, k, of encoder of No. j servo motorjIndicates the frequency multiplication coefficient, omega, of the j servo motor encoderjThe angle of the j-th servo motor required to rotate is indicated, (j is 1, 2, 3 and 4);
pressing an acquisition pause key, stopping sending a pulse signal to the driving unit by the programmable controller, and stopping the movement of the servo motor;
and step four, pressing a collection reset key, sending a reset pulse signal to the drive control unit by the programmable controller, and returning the servo motor to the pre-calibrated original point position.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1182001A (en) * | 1996-11-11 | 1998-05-20 | 大隈公司 | Measuring method of sphericity of ball end mill |
| DE102007047499A1 (en) * | 2007-10-04 | 2009-04-09 | E. Zoller GmbH & Co. KG Einstell- und Messgeräte | Method and device for acquiring information of a tool |
| CN206550754U (en) * | 2016-12-30 | 2017-10-13 | 哈尔滨理工大学 | A kind of Milling Process die surface topography measurement device |
| CN206798595U (en) * | 2017-03-27 | 2017-12-26 | 东莞市冠佳电子设备有限公司 | A kind of detection process equipment |
| JP6595065B1 (en) * | 2018-09-06 | 2019-10-23 | Ｄｍｇ森精機株式会社 | Machining apparatus, machining apparatus control method, and machining apparatus control program |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1182001A (en) * | 1996-11-11 | 1998-05-20 | 大隈公司 | Measuring method of sphericity of ball end mill |
| DE102007047499A1 (en) * | 2007-10-04 | 2009-04-09 | E. Zoller GmbH & Co. KG Einstell- und Messgeräte | Method and device for acquiring information of a tool |
| CN206550754U (en) * | 2016-12-30 | 2017-10-13 | 哈尔滨理工大学 | A kind of Milling Process die surface topography measurement device |
| CN206798595U (en) * | 2017-03-27 | 2017-12-26 | 东莞市冠佳电子设备有限公司 | A kind of detection process equipment |
| JP6595065B1 (en) * | 2018-09-06 | 2019-10-23 | Ｄｍｇ森精機株式会社 | Machining apparatus, machining apparatus control method, and machining apparatus control program |
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