CN111270432A - Sewing machine and method for high-speed and low-speed stitch length compensation of main shaft - Google Patents
Sewing machine and method for high-speed and low-speed stitch length compensation of main shaft Download PDFInfo
- Publication number
- CN111270432A CN111270432A CN202010194563.4A CN202010194563A CN111270432A CN 111270432 A CN111270432 A CN 111270432A CN 202010194563 A CN202010194563 A CN 202010194563A CN 111270432 A CN111270432 A CN 111270432A
- Authority
- CN
- China
- Prior art keywords
- speed
- main shaft
- compensation
- needle pitch
- angle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
- D05B69/14—Devices for changing speed or for reversing direction of rotation
- D05B69/16—Devices for changing speed or for reversing direction of rotation mechanical
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B19/00—Programme-controlled sewing machines
- D05B19/02—Sewing machines having electronic memory or microprocessor control unit
- D05B19/12—Sewing machines having electronic memory or microprocessor control unit characterised by control of operation of machine
- D05B19/14—Control of needle movement, e.g. varying amplitude or period of needle movement
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05D—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
- D05D2305/00—Operations on the work before or after sewing
- D05D2305/32—Measuring
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The application relates to the technical field of sewing machine manufacturing, and particularly provides a sewing machine and a method for main shaft high-low speed stitch length compensation, which are characterized in that the sewing machine comprises: the main shaft running speed detection device is used for detecting the main shaft speed, the difference between the main shaft speed and the main shaft reference speed is multiplied by the high-low speed compensation coefficient to serve as the stepping motor angle needle pitch compensation amount, the stepping motor angle needle pitch compensation amount is input to the sewing machine control device to achieve the front-back consistency of the needle pitch, the needle pitch deviation is accurately judged, the needle pitch compensation amount is rapidly determined, and the defect that the main shaft high-low speed needle pitch is different is effectively overcome.
Description
Technical Field
The application relates to the technical field of sewing machine manufacturing, and particularly provides a sewing machine and a method for high-low speed stitch length compensation of a main shaft.
Background
The prior sewing machine adopts an electromagnet as sewing power, can only adjust the needle pitch by manually correcting the mechanical angle, and changes the power into a stepping motor, so that the needle pitch of both back sewing and front sewing can be determined by modifying data through a driving software interface, the needle pitch is in one-to-one correspondence with the angles of the stepping motor, and the needle pitch of corresponding size is generated by the angle of the stepping motor. The operation setting that the power of the stepping motor is transmitted to the crank to drive the cloth feeding teeth is simple and practical, but neglects a problem that the needle pitch generated at high and low speeds slightly has difference in size when the main shaft runs at high and low speeds under the condition that the angle of the stepping motor is fixed and the angle of the crank is not changed. Then, after a certain stitch length is set by a user, the angle of the stepping motor, namely the angle of the crank, is fixed, when the main shaft sews at a relatively constant speed, the stitch length of the sewed stitches can be kept consistent, but if the main shaft runs at a low speed and runs at a high speed for a while, the stitch length interval between the sewed stitches can be changed, the bad effect that the front and back sewing of the sewing product is inconsistent is generated, and the sewing quality is influenced.
Disclosure of Invention
To the defect that different stitch lengths are generated due to different stitch speeds in the prior sewing technology, the technical problem to be solved by the application is to provide the sewing machine and the method for compensating the high-low speed stitch length of the main shaft so as to realize the adjustment of the uniformity of the sewing stitch length, and the sewing machine is characterized by comprising: the main shaft running speed detection device is used for detecting the speed of the main shaft, the difference between the speed of the main shaft and the reference speed of the main shaft is multiplied by the high-low speed compensation coefficient to serve as the angle gauge compensation quantity of the stepping motor, and the angle gauge compensation quantity of the stepping motor is input to the sewing machine control device to achieve the consistency of the gauge.
Specifically, the high-low speed compensation coefficient is provided with a positive seam high-low speed compensation coefficient and a reverse seam high-low speed compensation coefficient according to a positive seam and a reverse seam which appear in sewing, the difference between the main shaft speed and the main shaft reference speed is multiplied by the positive seam high-low speed compensation coefficient to serve as the angle gauge compensation quantity of the stepping motor, the difference between the main shaft speed and the main shaft reference speed is multiplied by the reverse seam high-low speed compensation coefficient to serve as the angle gauge compensation quantity of the stepping motor, the sewing machine and the method for main shaft high-low speed gauge compensation further have a stepping motor angle and a stepping motor final output angle, the final output angle of the stepping motor is the sum of the angle of the stepping motor and the angle gauge compensation quantity of the stepping motor, and the final output angle of the stepping motor is the final gauge compensation determination value of the main shaft high-low speed gauge compensation method.
Specifically, the needle pitch is set to be N;
setting a spindle speed X;
setting a main shaft reference speed as Xref;
setting a positive seam high-low speed compensation coefficient Kp 1;
setting a backstitch high-low speed compensation coefficient Kp 2;
setting an angle gauge needle compensation quantity Y of the stepping motor; the step motor angle stitch length compensation quantity Y comprises a step motor angle stitch length positive stitch compensation quantity Y1 and a step motor angle stitch length reverse stitch compensation quantity Y2;
setting an angle Z of a stepping motor;
setting a final output angle A of the stepping motor;
the stitch length is N, when N is larger than 0, the stitch length is a positive stitch, when N is smaller than 0, the stitch length is a reverse stitch, and when N is equal to 0, the stitch length is 0; the angle Z value of the stepping motor is obtained through actual measurement.
When N is greater than 0 and X is greater than Xref, the main shaft speed X is greater than the main shaft reference speed Xref in the positive seam state, the stepping motor angle needle pitch positive seam compensation amount Y1 is (X-Xref) X Kp 1; the difference value between the main shaft speed X and the main shaft reference speed Xref is multiplied by a positive seam high-low speed compensation coefficient Kp1, and the result is used as the positive seam compensation amount Y1 of the angle needle pitch of the stepping motor. When the main shaft speed X measured by the main shaft running speed detection device of the sewing machine is in the normal sewing process, the main shaft speed X is sent to software, when the software judges that the main shaft speed X is greater than the main shaft reference speed Xref, the main shaft reference speed Xref is deviated from the reference speed X and multiplied by a normal sewing high-low speed compensation coefficient Kp1, and the obtained result is used as the angle needle pitch normal sewing compensation amount Y1 of the stepping motor, namely the value of the normal sewing needle pitch needing compensation.
When N <0 and X > Xref, the sewing machine is in backstitch and the main shaft speed X is greater than the main shaft reference speed Xref, the stepping motor angle gauge backstitch compensation amount Y2 is- (X-Xref) X Kp 2; when the main shaft speed X is deviated from the main shaft reference speed Xref and multiplied by a backstitch high-low speed compensation coefficient Kp2, the obtained result is used as a stepping motor angle compensation offset Y; during backstitch, the method for adjusting the needle pitch is the same as the compensation amount of the needle pitch of the positive stitch, and only shows that the method is different in the running track.
Therefore, no matter whether the sewing is the normal sewing or the backstitch, the angle gauge compensation amount Y of the stepping motor is changed along with the change of the speed X of the main shaft, the high-low speed compensation coefficient Kp1 of the normal sewing and the high-low speed compensation coefficient Kp2 of the backstitch can be adjusted, and the reference speed Xref of the main shaft is adjusted by the characteristics of various sewing machines so as to adapt to the requirements of different sewing.
The spindle reference speed Xref, the positive seam high-low speed compensation coefficient Kp1 and the negative seam high-low speed compensation coefficient Kp2 can be modified through software adjustment, so as to solve the problems of consistency and difference existing in mechanical structure design, production installation and the like, and theoretically determine the numerical value of the angular needle pitch compensation amount Y of the stepping motor.
After the angle gauge compensation amount Y of the stepping motor is determined, the angle Z of the stepping motor needs to be adjusted, so that the final output angle of the stepping motor accords with the adjusted gauge, and the final output angle A of the stepping motor is finally determined.
The equation is that a is Z + Y, and the final output angle a of the stepping motor is obtained by superimposing the stepping motor angle Z measured at a speed lower than the reference speed Xref of the spindle and the stepping angle compensation offset Y.
The specific debugging method comprises the following steps: taking a positive seam needle pitch of 4 or 5 needle pitches, adjusting a positive seam high-low speed compensation coefficient Kp1 and a reverse seam high-low speed compensation coefficient Kp2 to be 0, then operating the main shaft at 200 revolutions, adjusting the corresponding stepping angle of the stepping motor, then accelerating the main shaft until the needle pitch begins to change, and obtaining the main shaft speed at the moment as a main shaft reference speed Xref (the main shaft reference speed can be adjusted downwards by a point). Then the main shaft runs at a high speed of 3000r/min again, the needle pitch of the positive seam at the moment is measured (generally larger than the needle pitch at the low speed), and the value of the parameter Kp1 is confirmed by adjusting the needle pitch compensation parameter Kp1 of the high and low speeds of the positive seam until the needle pitch is consistent with the needle pitch at the low speed. Similarly, the backstitch high-low speed gauge compensation parameter Kp2 can also be confirmed.
Experimental data prove that when the spindle speed is below a certain rotating speed (generally 1000r/min), the needle pitch is kept consistent as long as the angle of the stepping motor is unchanged, namely the reference speed of the spindle is unchanged, except that the spindle speed is the same as the reference speed of the spindle. However, when the reference speed of the main shaft is higher than the main shaft speed, the needle pitch is increased, but the needle pitch and the main shaft speed are in a better linear relation, and the linear proportional relation of the forward sewing and the backward sewing is slightly different and depends on the mechanical design of a manufacturer. By utilizing the characteristics and on the premise that the software can change the angle of the stepping motor in real time, the forward sewing high-low speed stepping angle compensation parameters and the backward sewing high-low speed stepping angle compensation parameters are provided through the information of the speed of the main shaft, so that stitches are basically consistent when sewing can be realized at any main shaft rotating speed.
When N is 0 or X is less than or equal to Xref, Y is 0; when the needle pitch is 0 or the main shaft moving speed X is less than or equal to the main shaft reference speed Xref, the angle needle pitch compensation amount of the stepping motor is 0, and the needle pitch is not compensated.
The sewing machine with the main shaft for compensating the high-speed and low-speed stitch length and the method have the advantages that: the method comprises the steps of analyzing the main shaft speed and the main shaft reference speed of the sewing machine by using software, quickly judging the difference between the main shaft speed and the main shaft reference speed, and then superposing the difference with the positive seam high-low speed compensation coefficient and the reverse seam high-low speed compensation coefficient set by the application on the final output angle of the stepping motor of the sewing machine in combination with the angle of the stepping motor of the sewing machine and the angle gauge compensation quantity of the stepping motor to obtain a sum value serving as a final numerical value of the main shaft high-low speed gauge compensation, accurately judging whether gauge deviation exists, quickly determining the gauge compensation quantity, and effectively solving the defect of large difference between the main shaft high-low speed gauge. By adjusting the forward seam high-low speed compensation coefficient and the backward seam high-low speed compensation coefficient of a plurality of factory sewing machines, the stitch gauge can be kept consistent under the operation of different main shaft speeds, thereby improving the sewing quality.
Drawings
FIG. 1 is a front stitch gauge compensation flowchart of a spindle high and low speed gauge compensation sewing machine and method of the present application;
FIG. 2 is a backstitch gauge compensation flowchart of a sewing machine and method for high and low speed gauge compensation of a main shaft according to the present application.
Detailed Description
Preferred embodiments of the present application will be described in detail below with reference to the accompanying drawings so that the advantages and features of the application can be more readily understood by those skilled in the art, and thus the scope of the application will be more clearly and clearly defined.
The application provides a sewing machine and method of main shaft high-low speed gauge needle compensation to realize adjusting the homogeneity that makes up the gauge needle and be N, its characterized in that, sewing machine including: the device comprises a needle pitch N, a main shaft speed X, a main shaft reference speed Xref, a high-low speed compensation coefficient, a stepping motor angle needle pitch compensation amount Y and a main shaft running speed detection device, wherein the main shaft running speed detection device is used for detecting the main shaft speed X, the difference between the main shaft speed X and the main shaft reference speed Xref is multiplied by the high-low speed compensation coefficient to serve as the stepping motor angle needle pitch compensation amount Y, and the stepping motor angle needle pitch compensation amount Y is input to a sewing machine control device to achieve the front-back consistency of the needle pitch N.
Specifically, the high-low speed compensation coefficient is provided with a positive seam high-low speed compensation coefficient and a reverse seam high-low speed compensation coefficient according to a positive seam and a reverse seam which appear during sewing, the difference between the main shaft speed X and the main shaft reference speed Xref is multiplied by the positive seam high-low speed compensation coefficient to serve as the angle gauge compensation quantity Y of the stepping motor, the difference between the main shaft speed X and the main shaft reference speed Xref is multiplied by the reverse seam high-low speed compensation coefficient to serve as the angle gauge compensation quantity Y of the stepping motor.
Specifically, the needle pitch is set to be N;
setting a spindle speed X;
setting a main shaft reference speed as Xref;
setting a positive seam high-low speed compensation coefficient Kp 1;
setting a backstitch high-low speed compensation coefficient Kp 2;
setting an angle gauge needle compensation quantity Y of the stepping motor; the step motor angle stitch length compensation quantity Y comprises a step motor angle stitch length positive stitch compensation quantity Y1 and a step motor angle stitch length reverse stitch compensation quantity Y2;
setting an angle Z of a stepping motor;
setting a final output angle A of the stepping motor;
the stitch length is N, when N is larger than 0, the stitch length is a positive stitch, when N is smaller than 0, the stitch length is a reverse stitch, and when N is equal to 0, the stitch length is 0; the angle Z value of the stepping motor is obtained through actual measurement.
When N is greater than 0 and X is greater than Xref, the main shaft speed X is greater than the main shaft reference speed Xref in the positive seam state, the stepping motor angle needle pitch positive seam compensation amount Y1 is (X-Xref) X Kp 1; the difference value between the main shaft speed X and the main shaft reference speed Xref is multiplied by a positive seam high-low speed compensation coefficient Kp1, and the result is used as the positive seam compensation amount Y1 of the angle needle pitch of the stepping motor. When the main shaft speed X measured by the main shaft running speed detection device of the sewing machine is in the normal sewing process, the main shaft speed X is sent to software, when the software judges that the main shaft speed X is greater than the main shaft reference speed Xref, the main shaft reference speed Xref is deviated from the reference speed X and multiplied by a normal sewing high-low speed compensation coefficient Kp1, and the obtained result is used as the angle needle pitch normal sewing compensation amount Y1 of the stepping motor, namely the value of the normal sewing needle pitch needing compensation.
When N <0 and X > Xref, the sewing machine is in backstitch and the main shaft speed X is greater than the main shaft reference speed Xref, the angle gauge backstitch compensation amount Y2 of the stepping motor is- (X-Xref) X Kp 2; when the main shaft speed X is deviated from the main shaft reference speed Xref and multiplied by a backstitch high-low speed compensation coefficient Kp2, the obtained result is used as the angle needle pitch backstitch compensation amount Y2 of the stepping motor; during backstitch, the method for adjusting the needle pitch is the same as the compensation amount of the needle pitch of the positive stitch, and only shows that the method is different in the running track.
Therefore, no matter whether the sewing is the forward sewing or the backward sewing, the angle compensation offset Y of the stepping motor is changed along with the change of the main shaft speed X, the high and low speed compensation coefficient Kp1 of the forward sewing and the high and low speed compensation coefficient Kp2 of the backward sewing can be adjusted, and the reference speed Xref of the main shaft is adjusted by the characteristics of various sewing machines so as to adapt to the requirements of different sewing.
The spindle reference speed Xref, the positive seam high-low speed compensation coefficient Kp1 and the negative seam high-low speed compensation coefficient Kp2 can be modified through software adjustment, so as to solve the problems of consistency and difference existing in mechanical structure design, production installation and the like, and theoretically determine the numerical value of the angular needle pitch compensation amount Y of the stepping motor.
After the step motor angle gauge positive stitch compensation amount Y1 and the step motor angle gauge reverse stitch compensation amount Y2 are determined, the step motor angle Z needs to be adjusted, so that the final output angle of the step motor is N according with the adjusted gauge, and the final output angle A of the step motor is finally determined.
The equation is that a is Z + Y, and the final output angle a of the stepping motor is obtained by superimposing the stepping motor angle Z measured at a speed lower than the reference speed Xref of the spindle and the stepping angle compensation offset Y.
Fig. 1 is a positive stitch gauge compensation flowchart of a sewing machine and method for main shaft high and low speed gauge compensation according to the present application, and the positive stitch high and low speed compensation coefficient is set to Kp1, which includes the following steps: selecting any positive stitch pitch N except 0 stitch pitch as 4mm (101), then adjusting the angle Z of a stepping motor and the speed X of a running main shaft as 200r/min (102), judging the stitch pitch of the generated stitch, and entering into the step (103) of measuring whether the stitch pitch is 4mm by using a vernier caliper. If the stitch can not meet the requirement of 4mm, returning to the step motor angle Z adjustment and the spindle speed X operation of 200r/min (102); if the stitch satisfies 4mm, obtaining the angle Z (104) of the stepping motor at the moment; then the main shaft speed X (105) is increased for acceleration.
After the spindle speed X (105) is accelerated, whether the needle pitch is changed is judged in time 106, if the needle pitch is changed 106 and cannot meet the change condition, if the needle pitch cannot meet the condition, whether the spindle speed is larger than or equal to 3000r/min is further judged, if the spindle speed is larger than or equal to 3000r/min, the normal-seam high-low speed compensation coefficient Kp1 is equal to 0, the operation is finished, if the spindle speed is smaller than 3000r/min, the spindle speed is continuously increased, and whether the condition is met is continuously judged.
In the above step 106 for judging whether the stitch length is changed, setting the main shaft speed as X to be 3000r/min to obtain a main shaft reference speed Xref (107), adjusting the stitch length compensation parameters of the high and low speed of the main seam and calculating the stitch length compensation amount Y1 of the stepping motor to be (X-Xref). times.Kp 1(108), when the stitch length is measured by a vernier caliper to be 4mm (113), measuring the stitch length by the vernier caliper to be 4mm, if the stitch length at the moment can not meet 4mm, returning to the step of adjusting the stitch length compensation parameters of the high and low speed of the main seam again and calculating the stitch length compensation amount Y1 of the stepping motor to be (X-Xref). times.Kp 1(108) by the vernier caliper to check whether an error exists; if the requirement that whether the needle pitch measured by a vernier caliper is 4mm (113) is 4mm is met, the positive seam high-low speed compensation coefficient Kp1(109) at the moment is obtained, and the operation is ended 110 when the positive seam high-low speed compensation coefficient Kp1 is determined.
In fig. 2, a backstitch gauge compensation flowchart of a sewing machine and a backstitch gauge compensation method for compensating the high and low speeds of a main shaft according to the present application sets a backstitch high and low speed compensation coefficient Kp2, and includes the following steps: selecting any backstitch needle pitch N which is 4mm except 0 needle pitch (201), then adjusting the angle Z of a stepping motor and operating the speed X of a main shaft which is 200r/min (202), judging the needle pitch of the generated stitches, measuring whether the needle pitch is 4mm by using a vernier caliper (203), and returning to the step motor angle Z adjustment and operating the speed X of the main shaft which is 200r/min (202) if the stitches can not meet the 4 mm; if the stitch satisfies 4mm, obtaining the angle Z (204) of the stepping motor at the moment; the re-spindle speed X (205) is accelerated.
After the spindle speed X (205) is accelerated, it is determined whether the pitch is changed 206, and if the condition for determining whether the pitch is changed 206 is satisfied, the spindle speed setting X is set to 3000r/min to obtain the spindle reference speed Xref (207). If the needle pitch is judged to be changed 206, the change condition can not be met, if the needle pitch cannot be changed, the spindle speed is further judged to be greater than or equal to 3000r/min, if the spindle speed is greater than or equal to 3000r/min, the normal-seam high-low speed compensation coefficient Kp2 is equal to 0, the operation is finished, if the spindle speed is less than 3000r/min, the spindle speed is continuously increased, and the condition 206 is continuously judged to be met.
In the step of judging whether the stitch length is changed 206, setting the main shaft speed as X to be 3000r/min to obtain a main shaft reference speed Xref (207), adjusting the stitch length compensation parameters of the high and low speed of the main seam and calculating the stitch length compensation amount Y2 of the stepping motor angle as- (X-Xref) X Kp2(208), when the stitch length is measured by a vernier caliper to be 4mm (213), measuring the stitch length by the vernier caliper to be 4mm, if the stitch length at the moment can not meet 4mm, returning to the step of adjusting the stitch length compensation parameters of the high and low speed of the main seam again and calculating the stitch length compensation amount Y2 of the stepping motor angle as- (X-Xref) X Kp2(208) to check whether an error exists; if the requirement that whether the needle pitch measured by a vernier caliper is 4mm (213) is 4mm is met, the positive seam high-low speed compensation coefficient Kp2(209) at the moment is obtained, and the operation is ended 210 when the positive seam high-low speed compensation coefficient Kp2 is determined.
When N is 0 or X is less than or equal to Xref, Y is 0; when the needle pitch is 0 or the main shaft moving speed X is less than or equal to the main shaft reference speed Xref, the angle needle pitch compensation amount of the stepping motor is 0, and the needle pitch is not compensated.
Experimental data prove that when the spindle speed is below a certain rotating speed (generally 1000r/min), the needle pitch is kept consistent as long as the angle of the stepping motor is unchanged, namely the reference speed of the spindle is unchanged, except that the spindle speed is the same as the reference speed of the spindle. However, when the reference speed of the main shaft is higher than the main shaft speed, the needle pitch is increased, but the needle pitch and the main shaft speed are in a better linear relation, and the linear proportional relation of the forward sewing and the backward sewing is slightly different and depends on the mechanical design of a manufacturer. By utilizing the characteristics and on the premise that the software can change the angle of the stepping motor in real time, the forward sewing high-low speed stepping angle compensation parameters and the backward sewing high-low speed stepping angle compensation parameters are provided through the information of the speed of the main shaft, so that stitches are basically consistent when sewing is carried out at any main shaft rotating speed.
The above description is only a preferred embodiment of the present application, and not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application, or which are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.
Claims (10)
1. A sewing machine with high-low speed needle pitch compensation of a main shaft is characterized by comprising: the needle pitch is N, the main shaft speed X, the main shaft reference speed Xref, the high and low speed compensation coefficient and the angle needle pitch compensation quantity Y of the stepping motor, the difference between the main shaft speed X and the main shaft reference speed Xref is multiplied by a high-low speed compensation coefficient to form a stepping motor angle needle pitch compensation quantity Y, the difference between the main shaft speed X and the main shaft reference speed Xref is multiplied by the positive seam high-low speed compensation coefficient to be the angle needle pitch compensation quantity Y of the stepping motor, the difference between the main shaft speed X and the main shaft reference speed Xref is multiplied by a high-low speed compensation coefficient to form a stepping motor angle needle pitch compensation quantity Y, the stepping motor angle Z and a stepping motor final output angle A are further provided, the final output angle A of the stepping motor is the sum of the angle Z of the stepping motor and the angle gauge compensation quantity Y of the stepping motor, the final output angle A of the stepping motor is a final gauge compensation determined value of the high-low speed gauge compensation method of the spindle.
2. The sewing machine of claim 1, wherein the high-low speed compensation coefficient is provided with a forward stitch high-low speed compensation coefficient and a backward stitch high-low speed compensation coefficient, the forward stitch high-low speed compensation coefficient is Kp1, the backward stitch high-low speed compensation coefficient is Kp2, the step motor angle stitch compensation amount Y comprises a step motor angle stitch positive compensation amount Y1 and a step motor angle stitch reverse compensation amount Y2, the stitch N is a forward stitch when the stitch N is greater than 0, the stitch N is a backward stitch when the stitch N is less than 0, the stitch N is greater than 0 and X Xref is greater, and the step motor angle stitch positive stitch compensation amount Y1 is (X-Xref) X kpref 1 in the forward stitch state and when the spindle speed X is greater than the spindle reference speed Xref; when the stitch length N is less than 0 and X is greater than Xref, and the backstitch and the main shaft speed X is greater than the main shaft reference speed Xref, the angle stitch length backstitch compensation amount Y2 of the stepping motor is equal to- (X-Xref) X Kp2, and when the stitch length N is equal to 0 or X is less than or equal to Xref, the Y is equal to 0; when the needle pitch is 0 or the main shaft moving speed X is less than or equal to the main shaft reference speed Xref, the angle needle pitch compensation amount of the stepping motor is 0.
3. A spindle high-low speed stitch length compensation method is characterized in that a positive seam high-low speed compensation coefficient is set to be Kp1, and the method comprises the following steps:
selecting any normal sewing needle distance N except 0 needle distance as 4mm, then adjusting the angle Z of the stepping motor and the speed X of the running main shaft as 200r/min, judging the needle distance of the generated stitch, and determining whether the needle distance is 4mm by using a vernier caliper, and obtaining the angle Z of the stepping motor when the stitch meets 4 mm; then the main shaft speed X is increased for acceleration,
after the spindle speed X is increased, whether the needle pitch changes or not is judged in time, if the condition for judging whether the needle pitch changes or not is met, the spindle speed setting X is set to be 3000r/min to obtain a spindle reference speed Xref, if the condition cannot be met, whether the spindle speed is greater than or equal to 3000r/min is further judged, if the spindle speed is greater than or equal to 3000r/min, a normal joint high-low speed compensation coefficient Kp1 is set to be 0, the operation is finished, if the spindle speed is less than 3000r/min, the spindle speed is continuously increased, and whether the condition is met or not is continuously judged.
And during the judgment of whether the needle pitch is changed, setting the speed of the main shaft to be X as 3000r/min to obtain a reference speed Xref of the main shaft, adjusting the compensation parameters of the high-speed and low-speed needle pitches of the main seam, calculating the angle needle pitch compensation amount Y1 of the stepping motor to be (X-Xref) X Kp1, measuring whether the needle pitch is 4mm by using a vernier caliper and whether the needle pitch is 4mm by using the vernier caliper, if the requirement that the needle pitch is 4mm by using the vernier caliper is met, obtaining the high-speed and low-speed compensation coefficient Kp1 of the main seam at the moment, and determining the high-speed and low-speed compensation coefficient Kp1 of the main shaft to finish the operation.
4. A method as claimed in claim 3, wherein if the stitch length of the thread does not satisfy 4mm, the step motor angle Z is adjusted and the spindle speed X is 200 r/min.
5. The method as claimed in claim 3, wherein the determining whether the needle pitch is changed and the condition of changing is not satisfied, then continuing to determine whether the spindle speed is greater than or equal to 3000r/min, and if the condition of determining whether the spindle speed is greater than or equal to 3000r/min is not satisfied, then continuing to accelerate the spindle.
6. The method as claimed in claim 3, wherein if the needle pitch is not 4mm, the step of measuring the needle pitch with a vernier caliper is repeated to adjust the thread pitch compensation parameters and calculate the angle of the stepping motor and the thread pitch compensation amount Y1 (X-Xref) X Kp1, and checking if there is an error.
7. A main shaft high-low speed stitch length compensation method is characterized in that a backstitch high-low speed compensation coefficient is set to be Kp2, and the method comprises the following backstitch stitch length compensation process steps:
selecting any backstitch needle pitch N except 0 needle pitch as 4mm, adjusting the angle Z of the stepping motor and the speed X of the running spindle as 200r/min, judging the needle pitch of the generated stitch, measuring whether the needle pitch is 4mm by using a vernier caliper, and obtaining the angle Z of the stepping motor if the stitch meets 4 mm; then the speed X of the main shaft is accelerated,
after the spindle speed X is increased, whether the needle pitch is changed or not is judged in time, if the condition for judging whether the needle pitch is changed or not is met, the spindle speed setting X is set to 3000r/min to obtain a spindle reference speed Xref, if the condition cannot be met, whether the spindle speed is greater than or equal to 3000r/min is further judged, if the spindle speed is greater than or equal to 3000r/min, a normal joint high-low speed compensation coefficient Kp2 is set to 0, the operation is finished, if the spindle speed is less than 3000r/min, the spindle speed is continuously increased, and whether the condition 206 is met or not is continuously judged.
And during the judgment of whether the needle pitch is changed, setting the speed of the main shaft to be X as 3000r/min to obtain a reference speed Xref of the main shaft, adjusting the compensation parameters of the high-speed and low-speed needle pitch of the main seam, and calculating the angle needle pitch compensation amount Y2 of the stepping motor to be- (X-Xref) X Kp2, wherein when the needle pitch is measured by a vernier caliper to be 4mm, the needle pitch is measured by the vernier caliper to be 4mm, and the requirement that the needle pitch is measured by the vernier caliper to be 4mm is met, the high-speed and low-speed compensation coefficient Kp2 of the main seam at the moment is obtained, and the high-speed and low-speed compensation coefficient Kp2 of the main shaft is determined to be finished.
8. The spindle high-low speed gauge compensation method according to claim 7, wherein if the stitch length can not satisfy 4mm, the step motor angle Z is adjusted and the spindle speed X is 200 r/min; and if the condition that whether the needle pitch is changed and cannot meet the change condition is judged, continuously judging whether the speed of the main shaft is greater than or equal to 3000r/min, and if the condition that the speed of the main shaft is greater than or equal to 3000r/min cannot be met, continuously accelerating the main shaft.
9. The method as claimed in claim 7, wherein if the needle pitch is not 4mm, the step of measuring the needle pitch with a vernier caliper is repeated to adjust the thread pitch compensation parameters and calculate the angle of the stepping motor and the thread pitch compensation amount Y2 ═ X-Xref × Kp2, and the error is checked.
10. The sewing machine for high and low speed stitch length compensation of main shaft according to any of claims 1 to 2, wherein the method for high and low speed stitch length compensation of main shaft is included in the sewing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010194563.4A CN111270432A (en) | 2020-03-19 | 2020-03-19 | Sewing machine and method for high-speed and low-speed stitch length compensation of main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010194563.4A CN111270432A (en) | 2020-03-19 | 2020-03-19 | Sewing machine and method for high-speed and low-speed stitch length compensation of main shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111270432A true CN111270432A (en) | 2020-06-12 |
Family
ID=71003878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010194563.4A Withdrawn CN111270432A (en) | 2020-03-19 | 2020-03-19 | Sewing machine and method for high-speed and low-speed stitch length compensation of main shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111270432A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112762623A (en) * | 2020-12-31 | 2021-05-07 | 芜湖美的厨卫电器制造有限公司 | Method and device for stepping motor, thermostatic valve and water heater |
| CN113852306A (en) * | 2021-09-30 | 2021-12-28 | 浙江众邦机电科技有限公司 | Cloth feeding motor control method and system for sewing machine, sewing machine and storage medium |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4545310A (en) * | 1983-12-29 | 1985-10-08 | Microdynamics, Inc. | Method and apparatus for accurately controlling the seam margins produced by a semi-automatic sewing machine |
| TW507038B (en) * | 2000-04-20 | 2002-10-21 | G M Pfaff Ag In Insolvenz | Sewing machine with speed-dependent stitch correction |
| CN105040297A (en) * | 2015-07-21 | 2015-11-11 | 西安标准工业股份有限公司 | Industrial sewing machine with electronic stitch length adjusting mechanism |
| CN205258803U (en) * | 2015-12-29 | 2016-05-25 | 西安标准工业股份有限公司 | Industrial sewing machine with gauge needle is transferred to electron |
| CN205556998U (en) * | 2016-04-29 | 2016-09-07 | 台州美科光电科技有限公司 | Domestic sewing machine's tailor gauge needle adjusts structure |
| TW201643290A (en) * | 2015-06-02 | 2016-12-16 | Zeng Hsing Ind Co Ltd | Compensation method of fabric feeding amount for sewing machine |
| CN109487446A (en) * | 2018-12-17 | 2019-03-19 | 浙江翔科缝纫机股份有限公司 | A kind of sewing machine |
-
2020
- 2020-03-19 CN CN202010194563.4A patent/CN111270432A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4545310A (en) * | 1983-12-29 | 1985-10-08 | Microdynamics, Inc. | Method and apparatus for accurately controlling the seam margins produced by a semi-automatic sewing machine |
| TW507038B (en) * | 2000-04-20 | 2002-10-21 | G M Pfaff Ag In Insolvenz | Sewing machine with speed-dependent stitch correction |
| TW201643290A (en) * | 2015-06-02 | 2016-12-16 | Zeng Hsing Ind Co Ltd | Compensation method of fabric feeding amount for sewing machine |
| CN105040297A (en) * | 2015-07-21 | 2015-11-11 | 西安标准工业股份有限公司 | Industrial sewing machine with electronic stitch length adjusting mechanism |
| CN205258803U (en) * | 2015-12-29 | 2016-05-25 | 西安标准工业股份有限公司 | Industrial sewing machine with gauge needle is transferred to electron |
| CN205556998U (en) * | 2016-04-29 | 2016-09-07 | 台州美科光电科技有限公司 | Domestic sewing machine's tailor gauge needle adjusts structure |
| CN109487446A (en) * | 2018-12-17 | 2019-03-19 | 浙江翔科缝纫机股份有限公司 | A kind of sewing machine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112762623A (en) * | 2020-12-31 | 2021-05-07 | 芜湖美的厨卫电器制造有限公司 | Method and device for stepping motor, thermostatic valve and water heater |
| CN113852306A (en) * | 2021-09-30 | 2021-12-28 | 浙江众邦机电科技有限公司 | Cloth feeding motor control method and system for sewing machine, sewing machine and storage medium |
| CN113852306B (en) * | 2021-09-30 | 2024-02-13 | 浙江众邦机电科技有限公司 | Method and system for controlling cloth feeding motor of sewing machine, sewing machine and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111270432A (en) | Sewing machine and method for high-speed and low-speed stitch length compensation of main shaft | |
| CN106988027A (en) | Sewing border automatic sewing system and bind | |
| CN1045802C (en) | Sewing machine | |
| CN104120548B (en) | The control method of sewing machine and sewing machine | |
| CN101545178B (en) | Sewing machine | |
| DE102019113412A1 (en) | Sewing system and apparatus for three-dimensional measuring | |
| CN102926118A (en) | Automatic bottom starting control system for flat knitting machine | |
| CN101338490B (en) | Sewing machine | |
| CN102877208A (en) | Method of and device for controlling fabric take-up in electronic pattern knitting machine | |
| CN107099951A (en) | A kind of sewing machine and its bouncing pilotage detection means and detection method | |
| JPH10192576A (en) | Controller of sewing machine | |
| CN111118820B (en) | Eccentric detection method and device for drum washing machine | |
| CN106768934B (en) | Speed variator gear shift mechanism performance measurement pilot system | |
| CN101736529A (en) | Method of generating sewing speed data of a sewing machine | |
| CN203212760U (en) | Automatic bottom-starting knitting control system of flat knitting machine | |
| KR20100037004A (en) | Pattern sewing machine | |
| CN111756282B (en) | Motor rotating speed control method, device and readable storage medium | |
| CN104294481B (en) | A kind of industrial sewing machine numerical control system and control method | |
| CN103557982B (en) | The inspection method of motor deviation and application thereof | |
| CN113640667A (en) | Automatic calibration method and system for EOL (electric operating level) offline zero point of motor | |
| CN104503491A (en) | Method for controlling material increase manufacturing flow precision through predicting scanning speed | |
| CN1070556C (en) | Cloths quantity detecting and correcting method for washing machine | |
| JP2012529573A (en) | Method and apparatus for automatically measuring yarn length supplied to a linear motion machine | |
| CN102953244B (en) | Method and device for controlling synchronous operating of sewing equipment stitching and feeding motors | |
| KR20190129740A (en) | Tension measuring device for knitting machine and tension measuring method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200612 |
|
| WW01 | Invention patent application withdrawn after publication |