CN112247054B - Forming process of double-end tooth product - Google Patents

Forming process of double-end tooth product Download PDF

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Publication number
CN112247054B
CN112247054B CN202011046823.XA CN202011046823A CN112247054B CN 112247054 B CN112247054 B CN 112247054B CN 202011046823 A CN202011046823 A CN 202011046823A CN 112247054 B CN112247054 B CN 112247054B
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control module
central control
matrix
preset
upsetting
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CN112247054A (en
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谢颖杰
王晨
顾伟
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Suzhou Flexible Precision Metal Technology Co ltd
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Suzhou Flexible Precision Metal Technology Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/02Die forging; Trimming by making use of special dies ; Punching during forging
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00Details of machines for forging, pressing, or hammering
    • B21J13/02Dies or mountings therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21KMAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K29/00Arrangements for heating or cooling during processing
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00Image analysis
    • G06T7/0002Inspection of images, e.g. flaw detection
    • G06T7/0004Industrial image inspection
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00Indexing scheme for image analysis or image enhancement
    • G06T2207/30Subject of image; Context of image processing
    • G06T2207/30108Industrial image inspection
    • G06T2207/30136Metal
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00Indexing scheme for image analysis or image enhancement
    • G06T2207/30Subject of image; Context of image processing
    • G06T2207/30108Industrial image inspection
    • G06T2207/30164Workpiece; Machine component

Abstract

The invention relates to a forming process of a double-end tooth product, which comprises the following steps: clamping the blank and placing the blank into a first cold heading die, detecting the mass and the volume of the blank by a clamp in the clamping process to judge the material of the blank and selecting a corresponding heading form according to the material; the first die carries out pre-upsetting on the workpiece when carrying out formal upsetting so as to determine the stress condition of the workpiece and adjust the upsetting form according to the stress condition; and detecting the surface state of the semi-finished product after the first die is upset, detecting the surface state of the finished product after the second die is upset, and controlling the clamp to perform different operations on the workpiece by the central control module according to different surface states. The invention leads the stress requirement of the tooth-shaped processing surface to reach the standard by feedback adjustment of the upsetting form, is convenient for directly upsetting and pressing the tooth-shaped processing surface into the tooth shape, improves the material utilization rate, reduces the processing process and reduces the production cost of the tooth-shaped product.

Description

Forming process of double-end tooth product
Technical Field
The invention relates to the technical field of machining, in particular to a forming process of a double-end tooth product.
Background
Machining refers to a process of changing the outer dimensions or properties of a workpiece by a mechanical device, and is classified into cutting and pressing according to differences in machining modes.
In the pressure processing technology, the cold heading technology is a main processing technology. In production, an external force is applied to the metal at normal temperature to form the metal in a predetermined mold, and this method is generally called cold heading. The cold heading has the characteristics of high utilization rate of steel, high production efficiency and good mechanical property of a finished product. However, the conventional cold heading forming process cannot form teeth, and the tooth profile is processed later, so that the material utilization rate is low.
Disclosure of Invention
Therefore, the invention provides a forming process of a double-end tooth product, which is used for solving the problem of low utilization rate of tooth-shaped product materials caused by cold heading failure to form tooth shapes due to the fact that specific die parameters cannot be selected to adjust the internal stress of a workpiece in the prior art.
In order to achieve the above object, the present invention provides a two-end tooth product forming process, including:
the method comprises the following steps that firstly, a clamp clamps a hollow cylindrical blank to place the blank to a first cold heading die, the clamp detects the quality of the clamped blank in the clamping process, a camera module detects the appearance of the blank, after the detection is finished, the clamp and the camera module respectively transmit detection results to a central control module, and the central control module judges the material of the blank according to the quality and the appearance of the blank and selects a corresponding upsetting form according to the type of the material;
secondly, pre-upsetting the blank by using the upsetting form selected in the first step through a first punching die, wherein a sensor is arranged on the first punching die and used for detecting the pre-deformation quantity of the blank, and the upsetting form is adjusted by determining the internal stress condition of the blank through the central control module according to the pre-deformation quantity;
thirdly, the first punch die carries out formal upsetting on the blank by using the upsetting form adjusted in the second step so as to form the spherical surface of the blank;
step four, the clamp clamps a semi-finished product formed by the spherical surface, the camera module collects image information of the semi-finished product and transmits the collected image information to the central control module, the central control module scores the surface of the semi-finished product and controls the clamp to place the semi-finished product with a qualified surface into a second cold-heading die according to a scoring result, place the semi-finished product with a slight flaw on the surface into the first cold-heading die again for upsetting shaping, and place the product with an unqualified surface into an unqualified product box;
step five, the second punch die carries out upsetting on the semi-finished workpiece so as to form the tooth surface of the semi-finished workpiece;
step six, the clamp clamps a molded product, the camera module collects image information of the molded product and transmits the collected image information to the central control module, and the central control module scores the tooth surface of the molded product and controls the clamp to place the qualified product into a qualified product box or place the unqualified product into an unqualified product box according to the scoring result;
a punching mode three-level matrix group BO (B1, B2, B3 and B4) is arranged in the central control module, wherein B1 is a first punching mode matrix group, B2 is a second punching mode matrix group, B3 is a third punching mode matrix group, and B4 is a fourth punching mode matrix group;
for the ith stamping mode matrix set Bi, Bi (Bi1, Bi2, Bi3), wherein Bi1 is the ith stamping mode matrix set upsetting parameter matrix, and Bi2 is the ith stamping mode matrix set workpiece deformation matrix; bi3 is an i stamping mode matrix group upset compensation parameter matrix group;
for the ith stamping die matrix set, the upset parameter matrix Bi1, Bi1(ai1, ai2, ai3, ai4), wherein ai1 is the pre-upset first die pressure, ai2 is the pre-upset first die speed, ai3 is the standard pressure of the formal upset first die, and ai4 is the standard speed of the formal upset first die;
for the ith stamping mode matrix set, workpiece deformation matrixes Bi2 and Bi2(Bi1, Bi2, Bi3 and Bi4), wherein Bi1 is preset with a first pre-upsetting deformation quantity, Bi2 is preset with a second pre-upsetting deformation quantity, Bi3 is preset with a third pre-upsetting deformation quantity, and Bi4 is preset with a fourth pre-upsetting deformation quantity, and all the deformation quantities sequentially increase;
for the ith stamping mode matrix set, the upset compensation parameter matrix sets Bi3 and Bi3(ci1, ci2, ci3 and ci4), wherein ci1 is a preset first upset compensation parameter matrix set, ci2 is a preset second upset compensation parameter matrix set, ci3 is a preset third upset compensation parameter matrix set, and ci4 is a preset fourth upset compensation parameter matrix set;
for a preset jth upset compensation parameter matrix group cij, cij (cij1, cij2) j is 1,2,3,4, wherein cij1 is a pressure compensation parameter and cij2 is a speed compensation parameter;
when the central control module selects parameters in an i-th stamping mode matrix group upsetting parameter matrix to pre-upset a blank, the central control module selects ai1 from the matrix group Bi1 matrix as first stamping die pressure and ai2 as first stamping die speed upsetting to pre-upset the blank, the sensor detects a blank pre-upsetting deformation b after pre-upsetting is completed and transmits the deformation b to the central control module, and the central control module compares the b with internal parameters of the matrix Bi 2:
when b is not more than Bi1, the central control module judges that the blank cannot be upset to a specified shape by using the selected pre-upsetting parameters, the central control module selects ci11 from Bi3 as a formal upsetting pressure compensation parameter, and selects ci12 formal upsetting speed compensation parameter;
when b is more than Bi1 and less than or equal to Bi2, the central control module judges that the blank cannot be upset to a specified shape by using the selected pre-upsetting parameters, selects ci21 from Bi3 as a formal upsetting pressure compensation parameter, and selects ci22 formal upsetting speed compensation parameter;
when b is more than bi2 and less than or equal to bi3, the central control module judges that the blank can be upset to a specified shape by using the selected pre-upsetting parameters, and the formal upsetting pressure and the formal upsetting speed are not compensated;
when b is more than Bi3 and less than or equal to Bi4, the central control module judges that the blank cannot be upset to a specified shape by using the selected pre-upsetting parameters, selects ci31 from Bi3 as a formal upsetting pressure compensation parameter, and selects ci32 formal upsetting speed compensation parameter;
when b is larger than Bi4, the central control module judges that the blank cannot be upset to a specified shape by using the selected pre-upsetting parameters, the central control module selects ci41 from Bi3 as a formal upsetting pressure compensation parameter, and selects ci42 formal upsetting speed compensation parameter;
when the central control module judges that the blank can be upset to a specified shape by using the selected pre-upsetting parameters, the central control module selects ai3 as a formal upsetting first die pressure and ai4 as a formal upsetting first die speed to carry out formal upsetting on the blank;
setting the pressure of the first die at the time of full-scale upsetting to ai3 and the upsetting speed of the first die to ai 4;
when the central control module determines that the blank cannot be upset to the specified shape using the selected pre-upset parameters, the central control module calculates a deformation amount difference Δ b, and the central control module compensates the formal upset pressure ai3 to ai 3' according to the deformation amount difference Δ b and the formal upset pressure compensation parameters cij1 using the following formula:
the central control module uses the following equation to compensate the formal upset speed ai4 to ai 4' based on the deformation amount difference Δ b and the formal upset speed compensation parameter cij 2:
after compensation is completed, the central control module sets the upsetting pressure of the first punch to ai3 'and the speed to ai 4' to carry out formal upsetting on the blank.
Further, the central control module is provided with a material density matrix A0(A1, A2, A3 and A4), wherein A1 is a first preset density, A2 is a second preset density, A3 is a third preset density, A4 is a fourth preset density, and the density parameters are sequentially increased;
in the first step, the clamp is further provided with a mass sensor, the mass m of the blank can be detected in the process that the clamp clamps the blank, the detection result is transmitted to the central control module, the camera device can detect the volume V of the blank and transmit the detection result to the central control module, the central control module calculates the density A of the workpiece according to the received m and V, and after calculation is completed, the central control module compares the A with the internal parameters of the matrix A0:
when A is not more than A1, the central control module selects B1 from the punching mode three-level matrix group BO as a punching mode matrix group;
when A is greater than A1 and less than or equal to A2, the central control module selects B2 from the three-level matrix group BO of the stamping modes as a matrix group of the stamping modes;
when A is greater than A2 and less than or equal to A3, the central control module selects B3 from the three-level matrix group BO of the stamping modes as a matrix group of the stamping modes;
when A is greater than A3 and less than or equal to A4, the central control module selects B4 from the three-level matrix group BO of the stamping modes as a stamping mode matrix group.
Furthermore, a semi-finished spherical profile matrix E0, a profile scoring weight coefficient matrix E0, a spherical symmetry matrix F0, a symmetry scoring weight coefficient matrix F0 and a spherical scoring matrix G0 are arranged in the central control module;
for the spherical profile matrix E0, E0(E1, E2, E3, E4), where E1 is a preset first profile, E2 is a preset second profile, E3 is a preset third profile, and E4 is a preset fourth profile, the profile parameters sequentially increase;
for the profile weighting coefficient matrix e0, e0(e1, e2, e3, e4), where e1 is a preset first profile weighting coefficient, e2 is a preset second profile weighting coefficient, e3 is a preset third profile weighting coefficient, e4 is a preset fourth profile weighting coefficient, the values of the profile weighting coefficients are sequentially decreased;
for spherical symmetry degree matrixes F0 and F0(F1, F2, F3 and F4), wherein F1 is a preset first symmetry degree, F2 is a preset second symmetry degree, F3 is a preset third symmetry degree, and F4 is a preset fourth symmetry degree, and the symmetry degree parameters are sequentially increased;
for the symmetry weighting coefficient matrixes f0, f0(f1, f2, f3 and f4), wherein f1 is a preset first symmetry weighting coefficient, f2 is a preset second symmetry weighting coefficient, f3 is a preset third symmetry weighting coefficient, f4 is a preset fourth symmetry weighting coefficient, and the values of the symmetry weighting coefficients are sequentially reduced;
for the sphere score matrix G0, G0(G1, G2), where G1 is the first preset sphere score, G2 is the second preset sphere score, G1 < G2;
in the fourth step, the camera module collects semi-finished product image information and transmits the collected image information to the central control module, the central control module determines semi-finished product spherical contour degree E and spherical symmetry degree F through images, the central control module compares internal parameters of E and E0 and compares internal parameters of F and F0:
when E is less than or equal to E1, the central control module selects E1 from the matrix E0 as a profile degree weight coefficient;
when E1 is more than E and less than or equal to E2, the central control module selects E2 from the matrix E0 as a profile degree weight coefficient;
when E2 is more than E and less than or equal to E3, the central control module selects E3 from the matrix E0 as a profile degree weight coefficient;
when E3 is more than E and less than or equal to E4, the central control module selects E4 from the matrix E0 as a profile degree weight coefficient;
when F is less than or equal to F1, the central control module selects F1 from the matrix F0 as a symmetry weighting coefficient;
when F is larger than F1 and smaller than or equal to F2, the central control module selects F2 from the matrix F0 as a symmetry weight coefficient;
when F is larger than F2 and smaller than or equal to F3, the central control module selects F3 from the matrix F0 as a symmetry weight coefficient;
when F is larger than F3 and smaller than or equal to F4, the central control module selects F4 from the matrix F0 as a symmetry weight coefficient;
when the central control module selects ei as the profile degree weight coefficient and selects fj as the symmetry degree weight coefficient, i is 1,2,3,4, j is 1,2,3,4, and the central control module calculates the spherical state score G of the semi-finished workpiece:
after the calculation is completed, the central control module compares the internal parameters G and G0:
when G is less than or equal to G1, the central control module judges that the spherical surface of the workpiece is unqualified and controls the clamp to place the workpiece into an unqualified product box;
when G is more than G1 and less than or equal to G2, the central control module judges the spherical surface of the workpiece is slight and controls the clamp to place the workpiece into the first cold heading die again for upsetting and shaping;
and when G is more than G2 and less than or equal to G3, the central control module judges that the spherical surface of the workpiece is qualified and controls the clamp to place the workpiece into the second cold heading die.
Further, a tooth surface shape error matrix P0, a shape error weight coefficient matrix P0, a tooth surface position error matrix Q0, a position error weight coefficient matrix Q0 and a tooth surface qualified fraction M are arranged in the central control module;
for the tooth surface shape error matrixes P0, P0(P1, P2, P3, P4), wherein P1 is a preset first shape error degree, P2 is a preset second shape error degree, P3 is a preset third shape error degree, and P4 is a preset fourth shape error degree, the shape error degree parameters are sequentially increased;
for the shape error weight coefficient matrix p0, p0(p1, p2, p3, p4), where p1 is a preset first shape error weight coefficient, p2 is a preset second shape error weight coefficient, p3 is a preset third shape error weight coefficient, and p4 is a preset fourth shape error weight coefficient, the shape error weight coefficient parameters are sequentially decreased;
for the tooth surface position error matrixes Q0, Q0(Q1, Q2, Q3, Q4), wherein Q1 is a preset first position error degree, Q2 is a preset second position error degree, Q3 is a preset third position error degree, Q4 is a preset fourth position error degree, and the position error degree parameters are sequentially increased;
for the position error weight coefficient matrix q0, q0(q1, q2, q3, q4), wherein q1 is a preset first position error weight coefficient, q2 is a preset second position error weight coefficient, q3 is a preset third position error weight coefficient, q4 is a preset fourth position error weight coefficient, and the position error weight coefficient parameters are sequentially reduced;
in the sixth step, the camera module collects finished product image information and transmits the collected image information to the central control module, the central control module determines the finished product tooth surface shape error degree P and the tooth surface position error degree Q through images, and the central control module compares the P with the P0 intrinsic parameters and compares the Q with the Q0 intrinsic parameters:
when P is not more than P1, the central control module selects P1 from the matrix P0 as a shape error weight coefficient;
when P1 is more than P and less than or equal to P2, the central control module selects P2 from the matrix P0 as a shape error weight coefficient;
when P2 is more than P and less than or equal to P3, the central control module selects P3 from the matrix P0 as a shape error weight coefficient;
when P3 is more than P and less than or equal to P4, the central control module selects P4 from the matrix P0 as a shape error weight coefficient;
when Q is less than or equal to Q1, the central control module selects Q1 from the matrix Q0 as a position error weight coefficient;
when Q1 is more than Q and less than or equal to Q2, the central control module selects Q2 from the matrix Q0 as a position error weight coefficient;
when Q2 is more than Q and less than or equal to Q3, the central control module selects Q3 from the matrix Q0 as a position error weight coefficient;
when Q3 is more than Q and less than or equal to Q4, the central control module selects Q4 from the matrix Q0 as a position error weight coefficient;
when the central control module selects pi as the profile weighting coefficient and selects qj as the symmetry weighting coefficient, i is 1,2,3,4, j is 1,2,3,4, and the central control module calculates the spherical state score M' of the semi-finished workpiece:
after the calculation is finished, the central control module compares M' with the internal parameters of M:
when M' is less than or equal to M, the central control module judges that the tooth surface of the workpiece is unqualified and controls the clamp to place the workpiece into an unqualified product box;
when M' is more than M, the central control module judges that the tooth surface of the workpiece is qualified and controls the clamp to place the workpiece into a qualified product box.
Further, a mold temperature matrix RO, a cooling liquid spraying matrix SO, cold heading interval standard time T and a temperature detection period T are also arranged in the central control module;
for a die temperature matrix RO, R0(R1, R2, R3 and R4), wherein R1 is the preset first cold heading die temperature, R2 is the preset second cold heading die temperature, R3 is the preset third cold heading die temperature, R4 is the preset fourth cold heading die temperature, and the temperature parameters are sequentially increased;
for the coolant spray matrix SO, S0(S1, S2, S3, S4), wherein S1 preset a first coolant spray amount, S2 preset a second coolant spray amount, S3 preset a third coolant spray amount, S4 preset a fourth coolant spray amount;
when the cold heading process is carried out and the temperature detection period t is passed, the temperature detector detects the temperature R of the die in real time and transmits the detection result to the central control module, and the central control module compares the R with the internal parameters of the RO matrix:
when R is not more than R1, the central control module selects S1 as the spraying amount of the cooling liquid in the cooling liquid spraying matrix SO;
when R is more than R1 and less than or equal to R2, the central control module selects S2 as the spraying amount of the cooling liquid in the cooling liquid spraying matrix SO;
when R is more than R2 and less than or equal to R3, the central control module selects S3 as the spraying amount of the cooling liquid in the cooling liquid spraying matrix SO;
when R is more than R3 and less than or equal to R4, the central control module selects S4 as the spraying amount of the cooling liquid in the cooling liquid spraying matrix SO;
when R is more than R4, the central control module selects S4 as the spraying amount of the cooling liquid in the cooling liquid spraying matrix SO and calculates the temperature difference delta R between R and R4, wherein the delta R is R-R4, and the central control module adjusts the cold heading interval time to be T' according to the delta R:
and when the temperature detection period T passes again, repeating the operation, continuously detecting the temperature R 'of the die in real time by the temperature detector and transmitting the detection result to the central control module, and when R' is less than or equal to R3, readjusting the cold heading interval time to T by the central control module.
Further, when the cold heading process is carried out, the central control module is connected with the display screen and displays the working states of all the parts through the display screen.
Further, when the cold heading process is performed, a coolant can circulate and cool each of the dies through the inner pipe.
Compared with the prior art, the invention has the beneficial effects that the clamp clamps a hollow cylindrical blank and places the blank into the first cold heading die, the clamp detects the quality of the clamped blank in the clamping process, the camera module detects the appearance of the blank and respectively transmits the detection results to the central control module, the central control module judges the blank material according to the weight and the appearance and selects a corresponding upsetting form according to the material, the first punch pre-upsets the blank according to the selected upsetting form, the first punch is provided with a sensor, the internal stress condition of the blank is determined according to the pre-upsetting variable, the upsetting form is adjusted according to the stress condition, the upsetting is performed through feedback adjustment to enable the stress requirement of the tooth profile machining surface to reach the standard, the tooth profile is conveniently and directly upset on the tooth profile machining surface, and the utilization rate of the material is improved.
Furthermore, the central control module is provided with a material density matrix A0(A1, A2, A3 and A4), the clamp is provided with a mass sensor, the mass sensor can detect the mass m of the blank in the clamping process and transmit the detection result to the central control module, the camera device can detect the mass V of the blank and transmit the detection result to the central control module, the central control module calculates the workpiece density A according to the received m and V, after calculation is completed, the central control module compares the A with the internal parameters of the matrix A0 to determine the material density, and after the density is determined, the central control module selects a corresponding stamping mode matrix group, so that the time for manually adjusting stamping parameters is reduced, and the production efficiency of the cold heading process is improved.
Further, a semi-finished product spherical contour degree matrix E0(E1, E2, E3 and E4), a contour degree grading parameter matrix E0(E1, E2, E3 and E4), a spherical symmetry matrix F0(F1, F2, F3 and F4), a symmetry grading parameter matrix F0(F1, F2, F3 and F4) and a spherical grading matrix G0(G1 and G2) are arranged in the central control module, the camera module collects semi-finished product image information and transmits the collected image information to the central control module, the central control module determines a semi-finished product spherical contour degree E and a spherical symmetry degree F through the image, the central control module compares the parameters in E0 with the parameters in F0, selects the corresponding contour degree grading parameters and the corresponding symmetry grading parameters in the comparison result, and selects ei as a symmetry grading parameter which is 1 and a symmetry grading parameter, 2,3,4, j become 1,2,3,4, well accuse module calculates semi-manufactured goods work piece sphere state score G, and after the calculation, well accuse module compares G and G0 internal parameter in order to confirm the sphere surface state, and well accuse module carries out different operations to the work piece according to the different control clamp of surface state, has reduced artifical check-out time, has further improved the production efficiency of cold-heading technology.
Further, a tooth surface shape error matrix P0(P1, P2, P3, P4), a shape error scoring parameter matrix P0(P1, P2, P3, P4), a tooth surface position error matrix Q0(Q1, Q2, Q3, Q4), a position error scoring parameter matrix Q0(Q1, Q2, Q3, Q4) and a tooth surface qualification score M are arranged in the central control module, the camera module collects finished product image information and transmits the collected image information to the central control module, the central control module determines the finished product tooth surface shape error degree P and the tooth surface position error degree Q through images, the central control module compares P with the internal parameters of P0 and compares Q with the internal parameters of Q0, the central control module selects the shape error scoring parameter and the position error scoring parameter through the comparison result, and selects pi as a contour scoring parameter and selects qj as a symmetrical scoring parameter, wherein qj is 1,2,3,4, j ═ 1,2,3,4, the central control module calculates the sphere state score M 'of the semi-finished workpiece, after the calculation is completed, the central control module compares M' with the M internal parameters to determine the surface state of the tooth surface of the workpiece, and the central control module controls the clamp to carry out different operations on the workpiece according to different surface states, so that the manual detection time is reduced, and the production efficiency of the cold heading process is further improved.
Furthermore, a die temperature matrix RO (R1, R2, R3 and R4), a cooling liquid spraying matrix SO (S1, S2, S3 and S4) and cold heading interval standard time T are further arranged in the central control module, when a cold heading process is carried out, a cold heading workpiece can generate a large amount of heat, the temperature detector detects the die temperature R in real time and transmits a detection result to the central control module, the central control module compares the R with the parameters in the RO matrix, the central control module is used as the cooling liquid spraying amount in the matrix SO according to the comparison result, and when the temperature exceeds the cooling capacity of the cooling liquid, the central control module adjusts the cold heading time interval according to the difference delta R between the R and the RO, the condition that the die is damaged or the workpiece is deformed due to overhigh processing temperature is prevented, the equipment abrasion degree and the rejection rate are reduced, and the production cost of the workpiece is reduced.
Further, when the cold heading process is carried out, the central control module is connected with the display screen and displays the working states of all the parts through the display screen, and workers can find the problems of all the parts in time through the display screen and process the problems in time, so that the equipment abrasion degree and the workpiece rejection rate are further reduced, and the production cost of the workpiece is further reduced.
Further, when the cold heading process is carried out, the cooling liquid can circularly cool each die through the internal pipeline, the die is placed to be damaged due to overhigh temperature, and the production cost of the workpiece is further reduced.
Drawings
FIG. 1 is a schematic structural view of a second cold-heading die according to the present invention;
FIG. 2 is a schematic structural view of a first cold-heading die according to the present invention;
fig. 3 is a schematic structural diagram of a finished workpiece according to the present invention.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described below with reference to examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and do not limit the scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1, fig. 2 and fig. 3, wherein fig. 1 is a schematic structural view of the second cold-heading die of the present invention, fig. 2 is a schematic structural view of the first cold-heading die of the present invention, and fig. 3 is a schematic structural view of a finished workpiece of the present invention.
The invention relates to a forming process of a double-end tooth product, which comprises the following steps:
the method comprises the following steps that firstly, a clamp clamps a hollow cylindrical blank to place the blank to a first cold heading die, the clamp detects the quality of the clamped blank in the clamping process, a camera module detects the appearance of the blank, after the detection is finished, the clamp and the camera module respectively transmit detection results to a central control module, and the central control module judges the material of the blank according to the quality and the appearance of the blank and selects a corresponding upsetting form according to the type of the material;
secondly, pre-upsetting the blank by using the upsetting form selected in the first step through a first punching die, wherein a sensor is arranged on the first punching die and used for detecting the pre-deformation quantity of the blank, and the upsetting form is adjusted by determining the internal stress condition of the blank through the central control module according to the pre-deformation quantity;
thirdly, the first punch die carries out formal upsetting on the blank by using the upsetting form adjusted in the second step so as to form the spherical surface of the blank;
step four, the clamp clamps a semi-finished product formed by the spherical surface, the camera module collects image information of the semi-finished product and transmits the collected image information to the central control module, the central control module scores the surface of the semi-finished product and controls the clamp to place the semi-finished product with a qualified surface into a second cold-heading die according to a scoring result, place the semi-finished product with a slight flaw on the surface into the first cold-heading die again for upsetting shaping, and place the product with an unqualified surface into an unqualified product box;
step five, the second punch die carries out upsetting on the semi-finished workpiece so as to form the tooth surface of the semi-finished workpiece;
step six, the clamp clamps a molded product, the camera module collects image information of the molded product and transmits the collected image information to the central control module, and the central control module scores the tooth surface of the molded product and controls the clamp to place the qualified product into a qualified product box or place the unqualified product into an unqualified product box according to the scoring result;
step one the above first cold heading die comprises a first die and a first main die, the first die comprising a first die shell 5102 for spherical forming, the first die shell 5102 enclosing a first die core 5105, a die back pad 5103 located within the first die shell 5102, and a first die pad 5104 located within the first die shell 5102, a first push tube 5101 for controlling the length of the product and discharging within the first die shell 5102; the first master mold comprises a first master mold shell 5201, the first master mold shell 5201 comprises a master mold core 5203 formed in a spherical shape, the first master mold shell 5201 comprises a first master mold cushion 5204, the first master mold three pin holder 5207 comprises the master mold cushion 5204, the first master mold three pin holder 5207 comprises a first master mold thimble 5202 for protecting an inner hole of a product from deformation, the first master mold thimble 5202 is wrapped with a push tube 5208 and a push tube back pad 5205 for wrapping a length of the product and discharging, the first master mold three pin holder 5207 further comprises a first master mold three pin 5209, and the first master mold three pin holder 5207 and the first master mold three pin 5209 comprise a first master mold three pin pad 5206, which is formed into a semi-finished product 5000.
Step four, the cold heading second cold heading die comprises a second die and a second main die, the second die comprises a second die shell 6102, the second die shell 6102 comprises a second die push pipe 6101 for tooth formation, a second punch back pad 6103 in the second die shell, a second die cushion 6104 behind the second punch back pad 6103, and a second die cushion 6105 fixed to the second die shell 6102, and a second die through bar 6106 in the second die cushion 6104; the second main mold comprises a second main mold housing 6202, and a second main mold fixing plate 6201 fixed to the second main mold housing 6202, the second main mold housing 6202 comprises a second main mold core 6213, and a main mold core 6212 wrapped around the second main mold core 6213 without being deformed, the second main mold housing 6202 comprises a second main mold rear core 6203, the second main mold housing 6202 comprises a second main mold cushion 6204, the second main mold housing 6202 comprises a second main mold rear cushion 6205, the second main mold rear cushion 6205 comprises a second main mold third needle base 6207, the second main mold rear cushion 6207 comprises a second main mold ejector pin 6214 for protecting the product from being deformed, the second ejector pin 6214 comprises a manufactured product length and is used for unloading a ejector tube 15 and an ejector tube rear cushion 6206, the third main mold housing 6207 comprises a second main mold protective sleeve 6216, and the third main mold protective sleeve 6208 together comprise the third main mold protective sleeve 6216 and the third main mold needle base 6208, wrapped around the second primary mold protective cover 6209 are a second primary mold positioning guide sleeve 6210 and a second primary mold back through T-shaped rod 6211, which is formed into a finished product 6000.
A punching mode three-level matrix group BO (B1, B2, B3 and B4) is arranged in the central control module, wherein B1 is a first punching mode matrix group, B2 is a second punching mode matrix group, B3 is a third punching mode matrix group, and B4 is a fourth punching mode matrix group;
for the ith stamping mode matrix set Bi, Bi (Bi1, Bi2, Bi3), wherein Bi1 is the ith stamping mode matrix set upsetting parameter matrix, and Bi2 is the ith stamping mode matrix set workpiece deformation matrix; bi3 is an i stamping mode matrix group upset compensation parameter matrix group;
for the ith stamping die matrix set, the upset parameter matrix Bi1, Bi1(ai1, ai2, ai3, ai4), wherein ai1 is the pre-upset first die pressure, ai2 is the pre-upset first die speed, ai3 is the standard pressure of the formal upset first die, and ai4 is the standard speed of the formal upset first die;
for the ith stamping mode matrix set, workpiece deformation matrixes Bi2 and Bi2(Bi1, Bi2, Bi3 and Bi4), wherein Bi1 is preset with a first pre-upsetting deformation quantity, Bi2 is preset with a second pre-upsetting deformation quantity, Bi3 is preset with a third pre-upsetting deformation quantity, and Bi4 is preset with a fourth pre-upsetting deformation quantity, and all the deformation quantities sequentially increase;
for the ith stamping mode matrix set, the upset compensation parameter matrixes Bi3 and Bi3(ci1, ci2, ci3 and ci4), wherein ci1 is a preset first upset compensation parameter matrix set, ci2 is a preset second upset compensation parameter matrix set, ci3 is a preset third upset compensation parameter matrix set, and ci4 is a preset fourth upset compensation parameter matrix set;
for a preset jth upset compensation parameter matrix group cij, cij (cij1, cij2) j is 1,2,3,4, wherein cij1 is a pressure compensation parameter and cij2 is a speed compensation parameter;
when the central control module selects parameters in an i-th stamping mode matrix group upsetting parameter matrix to pre-upset a blank, the central control module selects ai1 from the matrix group Bi1 matrix as first stamping die pressure and ai2 as first stamping die speed upsetting to pre-upset the blank, the sensor detects a blank pre-upsetting deformation b after pre-upsetting is completed and transmits the deformation b to the central control module, and the central control module compares the b with internal parameters of the matrix Bi 2:
when b is not more than Bi1, the central control module judges that the blank cannot be upset to a specified shape by using the selected pre-upsetting parameters, the central control module selects ci11 from Bi3 as a formal upsetting pressure compensation parameter, and selects ci12 formal upsetting speed compensation parameter;
when b is more than Bi1 and less than or equal to Bi2, the central control module judges that the blank cannot be upset to a specified shape by using the selected pre-upsetting parameters, selects ci21 from Bi3 as a formal upsetting pressure compensation parameter, and selects ci22 formal upsetting speed compensation parameter;
when b is more than bi2 and less than or equal to bi3, the central control module judges that the blank can be upset to a specified shape by using the selected pre-upsetting parameters, and the formal upsetting pressure and the formal upsetting speed are not compensated;
when b is more than Bi3 and less than or equal to Bi4, the central control module judges that the blank cannot be upset to a specified shape by using the selected pre-upsetting parameters, selects ci31 from Bi3 as a formal upsetting pressure compensation parameter, and selects ci32 formal upsetting speed compensation parameter;
when b is larger than Bi4, the central control module judges that the blank cannot be upset to a specified shape by using the selected pre-upsetting parameters, the central control module selects ci41 from Bi3 as a formal upsetting pressure compensation parameter, and selects ci42 formal upsetting speed compensation parameter;
when the central control module judges that the blank can be upset to a specified shape by using the selected pre-upsetting parameters, the central control module selects ai3 as a formal upsetting first die pressure and ai4 as a formal upsetting first die speed to carry out formal upsetting on the blank;
setting the pressure of the first die at the time of full-scale upsetting to ai3 and the upsetting speed of the first die to ai 4;
when the central control module determines that the blank cannot be upset to the specified shape using the selected pre-upset parameters, the central control module calculates a deformation amount difference Δ b, and the central control module compensates the formal upset pressure ai3 to ai 3' according to the deformation amount difference Δ b and the formal upset pressure compensation parameters cij1 using the following formula:
the central control module uses the following equation to compensate the formal upset speed ai4 to ai 4' based on the deformation amount difference Δ b and the formal upset speed compensation parameter cij 2:
after compensation is completed, the central control module sets the upsetting pressure of the first punch to ai3 'and the speed to ai 4' to carry out formal upsetting on the blank.
Further, the central control module is provided with a material density matrix A0(A1, A2, A3 and A4), wherein A1 is a first preset density, A2 is a second preset density, A3 is a third preset density, A4 is a fourth preset density, and the density parameters are sequentially increased;
in the first step, the clamp is further provided with a mass sensor, the mass m of the blank can be detected in the process that the clamp clamps the blank, the detection result is transmitted to the central control module, the camera device can detect the volume V of the blank and transmit the detection result to the central control module, the central control module calculates the density A of the workpiece according to the received m and V, and after calculation is completed, the central control module compares the A with the internal parameters of the matrix A0:
when A is not more than A1, the central control module selects B1 from the punching mode three-level matrix group BO as a punching mode matrix group;
when A is greater than A1 and less than or equal to A2, the central control module selects B2 from the three-level matrix group BO of the stamping modes as a matrix group of the stamping modes;
when A is greater than A2 and less than or equal to A3, the central control module selects B3 from the three-level matrix group BO of the stamping modes as a matrix group of the stamping modes;
when A is greater than A3 and less than or equal to A4, the central control module selects B4 from the three-level matrix group BO of the stamping modes as a stamping mode matrix group.
Furthermore, a semi-finished spherical profile matrix E0, a profile scoring weight coefficient matrix E0, a spherical symmetry matrix F0, a symmetry scoring weight coefficient matrix F0 and a spherical scoring matrix G0 are arranged in the central control module;
for the spherical profile matrix E0, E0(E1, E2, E3, E4), where E1 is a preset first profile, E2 is a preset second profile, E3 is a preset third profile, and E4 is a preset fourth profile, the profile parameters sequentially increase;
for the profile weighting coefficient matrix e0, e0(e1, e2, e3, e4), where e1 is a preset first profile weighting coefficient, e2 is a preset second profile weighting coefficient, e3 is a preset third profile weighting coefficient, e4 is a preset fourth profile weighting coefficient, the values of the profile weighting coefficients are sequentially decreased;
for spherical symmetry degree matrixes F0 and F0(F1, F2, F3 and F4), wherein F1 is a preset first symmetry degree, F2 is a preset second symmetry degree, F3 is a preset third symmetry degree, and F4 is a preset fourth symmetry degree, and the symmetry degree parameters are sequentially increased;
for the symmetry weighting coefficient matrixes f0, f0(f1, f2, f3 and f4), wherein f1 is a preset first symmetry weighting coefficient, f2 is a preset second symmetry weighting coefficient, f3 is a preset third symmetry weighting coefficient, f4 is a preset fourth symmetry weighting coefficient, and the values of the symmetry weighting coefficients are sequentially reduced;
for the sphere score matrix G0, G0(G1, G2), where G1 is the first preset sphere score, G2 is the second preset sphere score, G1 < G2;
in the fourth step, the camera module collects semi-finished product image information and transmits the collected image information to the central control module, the central control module determines semi-finished product spherical contour degree E and spherical symmetry degree F through images, the central control module compares internal parameters of E and E0 and compares internal parameters of F and F0:
when E is less than or equal to E1, the central control module selects E1 from the matrix E0 as a profile degree weight coefficient;
when E1 is more than E and less than or equal to E2, the central control module selects E2 from the matrix E0 as a profile degree weight coefficient;
when E2 is more than E and less than or equal to E3, the central control module selects E3 from the matrix E0 as a profile degree weight coefficient;
when E3 is more than E and less than or equal to E4, the central control module selects E4 from the matrix E0 as a profile degree weight coefficient;
when F is less than or equal to F1, the central control module selects F1 from the matrix F0 as a symmetry weighting coefficient;
when F is larger than F1 and smaller than or equal to F2, the central control module selects F2 from the matrix F0 as a symmetry weight coefficient;
when F is larger than F2 and smaller than or equal to F3, the central control module selects F3 from the matrix F0 as a symmetry weight coefficient;
when F is larger than F3 and smaller than or equal to F4, the central control module selects F4 from the matrix F0 as a symmetry weight coefficient;
when the central control module selects ei as the profile degree weight coefficient and selects fj as the symmetry degree weight coefficient, i is 1,2,3,4, j is 1,2,3,4, and the central control module calculates the spherical state score G of the semi-finished workpiece:
after the calculation is completed, the central control module compares the internal parameters G and G0:
when G is less than or equal to G1, the central control module judges that the spherical surface of the workpiece is unqualified and controls the clamp to place the workpiece into an unqualified product box;
when G is more than G1 and less than or equal to G2, the central control module judges the spherical surface of the workpiece is slight and controls the clamp to place the workpiece into the first cold heading die again for upsetting and shaping;
and when G is more than G2 and less than or equal to G3, the central control module judges that the spherical surface of the workpiece is qualified and controls the clamp to place the workpiece into the second cold heading die.
Further, a tooth surface shape error matrix P0, a shape error weight coefficient matrix P0, a tooth surface position error matrix Q0, a position error weight coefficient matrix Q0 and a tooth surface qualified fraction M are arranged in the central control module;
for the tooth surface shape error matrixes P0, P0(P1, P2, P3, P4), wherein P1 is a preset first shape error degree, P2 is a preset second shape error degree, P3 is a preset third shape error degree, and P4 is a preset fourth shape error degree, the shape error degree parameters are sequentially increased;
for the shape error weight coefficient matrix p0, p0(p1, p2, p3, p4), where p1 is a preset first shape error weight coefficient, p2 is a preset second shape error weight coefficient, p3 is a preset third shape error weight coefficient, and p4 is a preset fourth shape error weight coefficient, the shape error weight coefficient parameters are sequentially decreased;
for the tooth surface position error matrixes Q0, Q0(Q1, Q2, Q3, Q4), wherein Q1 is a preset first position error degree, Q2 is a preset second position error degree, Q3 is a preset third position error degree, Q4 is a preset fourth position error degree, and the position error degree parameters are sequentially increased;
for the position error weight coefficient matrix q0, q0(q1, q2, q3, q4), wherein q1 is a preset first position error weight coefficient, q2 is a preset second position error weight coefficient, q3 is a preset third position error weight coefficient, q4 is a preset fourth position error weight coefficient, and the position error weight coefficient parameters are sequentially reduced;
in the sixth step, the camera module collects finished product image information and transmits the collected image information to the central control module, the central control module determines the finished product tooth surface shape error degree P and the tooth surface position error degree Q through images, and the central control module compares the P with the P0 intrinsic parameters and compares the Q with the Q0 intrinsic parameters:
when P is not more than P1, the central control module selects P1 from the matrix P0 as a shape error weight coefficient;
when P1 is more than P and less than or equal to P2, the central control module selects P2 from the matrix P0 as a shape error weight coefficient;
when P2 is more than P and less than or equal to P3, the central control module selects P3 from the matrix P0 as a shape error weight coefficient;
when P3 is more than P and less than or equal to P4, the central control module selects P4 from the matrix P0 as a shape error weight coefficient;
when Q is less than or equal to Q1, the central control module selects Q1 from the matrix Q0 as a position error weight coefficient;
when Q1 is more than Q and less than or equal to Q2, the central control module selects Q2 from the matrix Q0 as a position error weight coefficient;
when Q2 is more than Q and less than or equal to Q3, the central control module selects Q3 from the matrix Q0 as a position error weight coefficient;
when Q3 is more than Q and less than or equal to Q4, the central control module selects Q4 from the matrix Q0 as a position error weight coefficient;
when the central control module selects pi as the profile weighting coefficient and selects qj as the symmetry weighting coefficient, i is 1,2,3,4, j is 1,2,3,4, and the central control module calculates the spherical state score M' of the semi-finished workpiece:
after the calculation is finished, the central control module compares M' with the internal parameters of M:
when M' is less than or equal to M, the central control module judges that the tooth surface of the workpiece is unqualified and controls the clamp to place the workpiece into an unqualified product box;
when M' is more than M, the central control module judges that the tooth surface of the workpiece is qualified and controls the clamp to place the workpiece into a qualified product box.
Further, a mold temperature matrix RO, a cooling liquid spraying matrix SO, cold heading interval standard time T and a temperature detection period T are also arranged in the central control module;
for a die temperature matrix RO, R0(R1, R2, R3 and R4), wherein R1 is the preset first cold heading die temperature, R2 is the preset second cold heading die temperature, R3 is the preset third cold heading die temperature, R4 is the preset fourth cold heading die temperature, and the temperature parameters are sequentially increased;
for the coolant spray matrix SO, S0(S1, S2, S3, S4), wherein S1 preset a first coolant spray amount, S2 preset a second coolant spray amount, S3 preset a third coolant spray amount, S4 preset a fourth coolant spray amount;
when the cold heading process is carried out and the temperature detection period t is passed, the temperature detector detects the temperature R of the die in real time and transmits the detection result to the central control module, and the central control module compares the R with the internal parameters of the RO matrix:
when R is not more than R1, the central control module selects S1 as the spraying amount of the cooling liquid in the cooling liquid spraying matrix SO;
when R is more than R1 and less than or equal to R2, the central control module selects S2 as the spraying amount of the cooling liquid in the cooling liquid spraying matrix SO;
when R is more than R2 and less than or equal to R3, the central control module selects S3 as the spraying amount of the cooling liquid in the cooling liquid spraying matrix SO;
when R is more than R3 and less than or equal to R4, the central control module selects S4 as the spraying amount of the cooling liquid in the cooling liquid spraying matrix SO;
when R is more than R4, the central control module selects S4 as the spraying amount of the cooling liquid in the cooling liquid spraying matrix SO and calculates the temperature difference delta R between R and R4, wherein the delta R is R-R4, and the central control module adjusts the cold heading interval time to be T' according to the delta R:
and when the temperature detection period T passes again, repeating the operation, continuously detecting the temperature R 'of the die in real time by the temperature detector and transmitting the detection result to the central control module, and when R' is less than or equal to R3, readjusting the cold heading interval time to T by the central control module.
Further, when the cold heading process is carried out, the central control module is connected with the display screen and displays the working states of all the parts through the display screen.
Further, when the cold heading process is performed, a coolant can circulate and cool each of the dies through the inner pipe.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention; various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. A two-end tooth product forming process is characterized by comprising the following steps:
the method comprises the following steps that firstly, a clamp clamps a hollow cylindrical blank to place the blank to a first cold heading die, the clamp detects the quality of the clamped blank in the clamping process, a camera module detects the appearance of the blank, after the detection is finished, the clamp and the camera module respectively transmit detection results to a central control module, and the central control module judges the material of the blank according to the quality and the appearance of the blank and selects a corresponding upsetting form according to the type of the material;
secondly, pre-upsetting the blank by using the upsetting form selected in the first step through a first punching die, wherein a sensor is arranged on the first punching die and used for detecting the pre-deformation quantity of the blank, and the upsetting form is adjusted by determining the internal stress condition of the blank through the central control module according to the pre-deformation quantity;
thirdly, the first punch die carries out formal upsetting on the blank by using the upsetting form adjusted in the second step so as to form the spherical surface of the blank;
step four, the clamp clamps a semi-finished product formed by the spherical surface, the camera module collects image information of the semi-finished product and transmits the collected image information to the central control module, the central control module scores the surface of the semi-finished product and controls the clamp to place the semi-finished product with a qualified surface into a second cold-heading die according to a scoring result, place the semi-finished product with a slight flaw on the surface into the first cold-heading die again for upsetting shaping, and place the product with an unqualified surface into an unqualified product box;
step five, the second punch die carries out upsetting on the semi-finished workpiece so as to form the tooth surface of the semi-finished workpiece;
step six, the clamp clamps a molded product, the camera module collects image information of the molded product and transmits the collected image information to the central control module, and the central control module scores the tooth surface of the molded product and controls the clamp to place the qualified product into a qualified product box or place the unqualified product into an unqualified product box according to the scoring result;
a punching mode three-level matrix group BO (B1, B2, B3 and B4) is arranged in the central control module, wherein B1 is a first punching mode matrix group, B2 is a second punching mode matrix group, B3 is a third punching mode matrix group, and B4 is a fourth punching mode matrix group;
for the ith stamping mode matrix set Bi, Bi (Bi1, Bi2, Bi3), wherein Bi1 is the ith stamping mode matrix set upsetting parameter matrix, and Bi2 is the ith stamping mode matrix set workpiece deformation matrix; bi3 is an i stamping mode matrix group upset compensation parameter matrix group;
for the ith stamping die matrix set, the upset parameter matrix Bi1, Bi1(ai1, ai2, ai3, ai4), wherein ai1 is the pre-upset first die pressure, ai2 is the pre-upset first die speed, ai3 is the standard pressure of the formal upset first die, and ai4 is the standard speed of the formal upset first die;
for the ith stamping mode matrix set, workpiece deformation matrixes Bi2 and Bi2(Bi1, Bi2, Bi3 and Bi4), wherein Bi1 is preset with a first pre-upsetting deformation quantity, Bi2 is preset with a second pre-upsetting deformation quantity, Bi3 is preset with a third pre-upsetting deformation quantity, and Bi4 is preset with a fourth pre-upsetting deformation quantity, and all the deformation quantities sequentially increase;
for the ith stamping mode matrix set, the upset compensation parameter matrix sets Bi3 and Bi3(ci1, ci2, ci3 and ci4), wherein ci1 is a preset first upset compensation parameter matrix set, ci2 is a preset second upset compensation parameter matrix set, ci3 is a preset third upset compensation parameter matrix set, and ci4 is a preset fourth upset compensation parameter matrix set;
for a preset jth upset compensation parameter matrix group cij, cij (cij1, cij2) j is 1,2,3,4, wherein cij1 is a pressure compensation parameter and cij2 is a speed compensation parameter;
when the central control module selects parameters in an i-th stamping mode matrix group upsetting parameter matrix to pre-upset a blank, the central control module selects ai1 from the matrix group Bi1 matrix as first stamping die pressure and ai2 as first stamping die speed upsetting to pre-upset the blank, the sensor detects a blank pre-upsetting deformation b after pre-upsetting is completed and transmits the deformation b to the central control module, and the central control module compares the b with internal parameters of the matrix Bi 2:
when b is not more than Bi1, the central control module judges that the blank cannot be upset to a specified shape by using the selected pre-upsetting parameters, the central control module selects ci11 from Bi3 as a formal upsetting pressure compensation parameter, and selects ci12 formal upsetting speed compensation parameter;
when b is more than Bi1 and less than or equal to Bi2, the central control module judges that the blank cannot be upset to a specified shape by using the selected pre-upsetting parameters, selects ci21 from Bi3 as a formal upsetting pressure compensation parameter, and selects ci22 formal upsetting speed compensation parameter;
when b is more than bi2 and less than or equal to bi3, the central control module judges that the blank can be upset to a specified shape by using the selected pre-upsetting parameters, and the formal upsetting pressure and the formal upsetting speed are not compensated;
when b is more than Bi3 and less than or equal to Bi4, the central control module judges that the blank cannot be upset to a specified shape by using the selected pre-upsetting parameters, selects ci31 from Bi3 as a formal upsetting pressure compensation parameter, and selects ci32 formal upsetting speed compensation parameter;
when b is larger than Bi4, the central control module judges that the blank cannot be upset to a specified shape by using the selected pre-upsetting parameters, the central control module selects ci41 from Bi3 as a formal upsetting pressure compensation parameter, and selects ci42 formal upsetting speed compensation parameter;
when the central control module judges that the blank can be upset to a specified shape by using the selected pre-upsetting parameters, the central control module selects ai3 as a formal upsetting first die pressure and ai4 as a formal upsetting first die speed to carry out formal upsetting on the blank;
setting the pressure of the first die at the time of full-scale upsetting to ai3 and the upsetting speed of the first die to ai 4;
when the central control module determines that the blank cannot be upset to the specified shape using the selected pre-upset parameters, the central control module calculates a deformation amount difference Δ b, and the central control module compensates the formal upset pressure ai3 to ai 3' according to the deformation amount difference Δ b and the formal upset pressure compensation parameters cij1 using the following formula:
the central control module uses the following equation to compensate the formal upset speed ai4 to ai 4' based on the deformation amount difference Δ b and the formal upset speed compensation parameter cij 2:
after compensation is completed, the central control module sets the upsetting pressure of the first punch to ai3 'and the speed to ai 4' to carry out formal upsetting on the blank.
2. A two-headed tooth product forming process according to claim 1, wherein the central control module is provided with a material density matrix a0(a1, a2, A3, a4), wherein a1 is a first preset density, a2 is a second preset density, A3 is a third preset density, a4 is a fourth preset density, and the density parameters are increased in sequence;
in the first step, the clamp is further provided with a mass sensor, the mass m of the blank can be detected in the process that the clamp clamps the blank, the detection result is transmitted to the central control module, the camera module can detect the volume V of the blank and transmit the detection result to the central control module, the central control module calculates the density A of the workpiece according to the received m and V, and after calculation is completed, the central control module compares the A with the internal parameters of the matrix A0:
when A is not more than A1, the central control module selects B1 from the punching mode three-level matrix group BO as a punching mode matrix group;
when A is greater than A1 and less than or equal to A2, the central control module selects B2 from the three-level matrix group BO of the stamping modes as a matrix group of the stamping modes;
when A is greater than A2 and less than or equal to A3, the central control module selects B3 from the three-level matrix group BO of the stamping modes as a matrix group of the stamping modes;
when A is greater than A3 and less than or equal to A4, the central control module selects B4 from the three-level matrix group BO of the stamping modes as a stamping mode matrix group.
3. The forming process of a double-ended tooth product as claimed in claim 1, wherein a semi-finished spherical profile matrix E0, a profile scoring weight coefficient matrix E0, a spherical symmetry matrix F0, a symmetry scoring weight coefficient matrix F0 and a spherical scoring matrix G0 are arranged in the central control module;
for the spherical profile matrix E0, E0(E1, E2, E3, E4), where E1 is a preset first profile, E2 is a preset second profile, E3 is a preset third profile, and E4 is a preset fourth profile, the profile parameters sequentially increase;
for the profile weighting coefficient matrix e0, e0(e1, e2, e3, e4), where e1 is a preset first profile weighting coefficient, e2 is a preset second profile weighting coefficient, e3 is a preset third profile weighting coefficient, e4 is a preset fourth profile weighting coefficient, the values of the profile weighting coefficients are sequentially decreased;
for spherical symmetry degree matrixes F0 and F0(F1, F2, F3 and F4), wherein F1 is a preset first symmetry degree, F2 is a preset second symmetry degree, F3 is a preset third symmetry degree, and F4 is a preset fourth symmetry degree, and the symmetry degree parameters are sequentially increased;
for the symmetry weighting coefficient matrixes f0, f0(f1, f2, f3 and f4), wherein f1 is a preset first symmetry weighting coefficient, f2 is a preset second symmetry weighting coefficient, f3 is a preset third symmetry weighting coefficient, f4 is a preset fourth symmetry weighting coefficient, and the values of the symmetry weighting coefficients are sequentially reduced;
for the sphere score matrix G0, G0(G1, G2), where G1 is the first preset sphere score, G2 is the second preset sphere score, G1 < G2;
in the fourth step, the camera module collects semi-finished product image information and transmits the collected image information to the central control module, the central control module determines semi-finished product spherical contour degree E and spherical symmetry degree F through images, the central control module compares internal parameters of E and E0 and compares internal parameters of F and F0:
when E is less than or equal to E1, the central control module selects E1 from the matrix E0 as a profile degree weight coefficient;
when E1 is more than E and less than or equal to E2, the central control module selects E2 from the matrix E0 as a profile degree weight coefficient;
when E2 is more than E and less than or equal to E3, the central control module selects E3 from the matrix E0 as a profile degree weight coefficient;
when E3 is more than E and less than or equal to E4, the central control module selects E4 from the matrix E0 as a profile degree weight coefficient;
when F is less than or equal to F1, the central control module selects F1 from the matrix F0 as a symmetry weighting coefficient;
when F is larger than F1 and smaller than or equal to F2, the central control module selects F2 from the matrix F0 as a symmetry weight coefficient;
when F is larger than F2 and smaller than or equal to F3, the central control module selects F3 from the matrix F0 as a symmetry weight coefficient;
when F is larger than F3 and smaller than or equal to F4, the central control module selects F4 from the matrix F0 as a symmetry weight coefficient;
when the central control module selects ei as the profile degree weight coefficient and selects fj as the symmetry degree weight coefficient, i is 1,2,3,4, j is 1,2,3,4, and the central control module calculates the spherical state score G of the semi-finished workpiece:
after the calculation is completed, the central control module compares the internal parameters G and G0:
when G is less than or equal to G1, the central control module judges that the spherical surface of the workpiece is unqualified and controls the clamp to place the workpiece into an unqualified product box;
when G is more than G1 and less than or equal to G2, the central control module judges the spherical surface of the workpiece is slight and controls the clamp to place the workpiece into the first cold heading die again for upsetting and shaping;
and when G is more than G2 and less than or equal to G3, the central control module judges that the spherical surface of the workpiece is qualified and controls the clamp to place the workpiece into the second cold heading die.
4. The forming process of a two-head gear product as claimed in claim 1, wherein the central control module is provided with a tooth surface shape error matrix P0, a shape error weight coefficient matrix P0, a tooth surface position error matrix Q0, a position error weight coefficient matrix Q0 and a tooth surface qualified score M;
for the tooth surface shape error matrixes P0, P0(P1, P2, P3, P4), wherein P1 is a preset first shape error degree, P2 is a preset second shape error degree, P3 is a preset third shape error degree, and P4 is a preset fourth shape error degree, the shape error degree parameters are sequentially increased;
for the shape error weight coefficient matrix p0, p0(p1, p2, p3, p4), where p1 is a preset first shape error weight coefficient, p2 is a preset second shape error weight coefficient, p3 is a preset third shape error weight coefficient, and p4 is a preset fourth shape error weight coefficient, the shape error weight coefficient parameters are sequentially decreased;
for the tooth surface position error matrixes Q0, Q0(Q1, Q2, Q3, Q4), wherein Q1 is a preset first position error degree, Q2 is a preset second position error degree, Q3 is a preset third position error degree, Q4 is a preset fourth position error degree, and the position error degree parameters are sequentially increased;
for the position error weight coefficient matrix q0, q0(q1, q2, q3, q4), wherein q1 is a preset first position error weight coefficient, q2 is a preset second position error weight coefficient, q3 is a preset third position error weight coefficient, q4 is a preset fourth position error weight coefficient, and the position error weight coefficient parameters are sequentially reduced;
in the sixth step, the camera module collects finished product image information and transmits the collected image information to the central control module, the central control module determines the finished product tooth surface shape error degree P and the tooth surface position error degree Q through images, and the central control module compares the P with the P0 intrinsic parameters and compares the Q with the Q0 intrinsic parameters:
when P is not more than P1, the central control module selects P1 from the matrix P0 as a shape error weight coefficient;
when P1 is more than P and less than or equal to P2, the central control module selects P2 from the matrix P0 as a shape error weight coefficient;
when P2 is more than P and less than or equal to P3, the central control module selects P3 from the matrix P0 as a shape error weight coefficient;
when P3 is more than P and less than or equal to P4, the central control module selects P4 from the matrix P0 as a shape error weight coefficient;
when Q is less than or equal to Q1, the central control module selects Q1 from the matrix Q0 as a position error weight coefficient;
when Q1 is more than Q and less than or equal to Q2, the central control module selects Q2 from the matrix Q0 as a position error weight coefficient;
when Q2 is more than Q and less than or equal to Q3, the central control module selects Q3 from the matrix Q0 as a position error weight coefficient;
when Q3 is more than Q and less than or equal to Q4, the central control module selects Q4 from the matrix Q0 as a position error weight coefficient;
when the central control module selects pi as the profile weighting coefficient and selects qj as the symmetry weighting coefficient, i is 1,2,3,4, j is 1,2,3,4, and the central control module calculates the spherical state score M' of the semi-finished workpiece:
after the calculation is finished, the central control module compares M' with the internal parameters of M:
when M' is less than or equal to M, the central control module judges that the tooth surface of the workpiece is unqualified and controls the clamp to place the workpiece into an unqualified product box;
when M' is more than M, the central control module judges that the tooth surface of the workpiece is qualified and controls the clamp to place the workpiece into a qualified product box.
5. The forming process of a double-ended tooth product according to claim 1, wherein a mold temperature matrix RO, a cooling liquid spraying matrix SO, a cold heading interval standard time T and a temperature detection period T are further arranged in the central control module;
for a die temperature matrix RO, R0(R1, R2, R3 and R4), wherein R1 is the preset first cold heading die temperature, R2 is the preset second cold heading die temperature, R3 is the preset third cold heading die temperature, R4 is the preset fourth cold heading die temperature, and the temperature parameters are sequentially increased;
for the coolant spray matrix SO, S0(S1, S2, S3, S4), wherein S1 preset a first coolant spray amount, S2 preset a second coolant spray amount, S3 preset a third coolant spray amount, S4 preset a fourth coolant spray amount;
when the cold heading process is carried out and the temperature detection period t is passed, the temperature detector detects the temperature R of the die in real time and transmits the detection result to the central control module, and the central control module compares the R with the internal parameters of the RO matrix:
when R is not more than R1, the central control module selects S1 as the spraying amount of the cooling liquid in the cooling liquid spraying matrix SO;
when R is more than R1 and less than or equal to R2, the central control module selects S2 as the spraying amount of the cooling liquid in the cooling liquid spraying matrix SO;
when R is more than R2 and less than or equal to R3, the central control module selects S3 as the spraying amount of the cooling liquid in the cooling liquid spraying matrix SO;
when R is more than R3 and less than or equal to R4, the central control module selects S4 as the spraying amount of the cooling liquid in the cooling liquid spraying matrix SO;
when R is more than R4, the central control module selects S4 as the spraying amount of the cooling liquid in the cooling liquid spraying matrix SO and calculates the temperature difference delta R between R and R4, wherein the delta R is R-R4, and the central control module adjusts the cold heading interval time to be T' according to the delta R:
and when the temperature detection period T passes again, repeating the operation, continuously detecting the temperature R 'of the die in real time by the temperature detector and transmitting the detection result to the central control module, and when R' is less than or equal to R3, readjusting the cold heading interval time to T by the central control module.
6. The forming process of a double-ended gear product as claimed in claim 1, wherein the central control module is connected with the display screen and displays the working state of each component through the display screen during the cold heading process.
7. The two-headed tooth product forming process according to claim 6, wherein the first die and the second die are circulatively cooled by the coolant through the inner pipe during the cold heading process.
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