JPH07248811A - Automatic programming device for coiled spring forming machine - Google Patents

Abstract

PURPOSE:To facilitate specification of data correction position and verification of data by displaying a coiled spring shape and displaying a marker, which distinctly indicates a data set object position, and a coil winding number integrated value. CONSTITUTION:A winding number calculating part 14 enters the data set object position as the input from a data setting control part 5 and enters respective data DCG and DTG of matched coil wind number, coil diameter, and coiled spring pitch as the input from a shape data matching part 12 or a tool operation data matching part 13 to calculate a coil winding number integrated value DCW from the head of coil winding number to the data set object position. A shape and guide display control part 16 plots the coiled spring shape on the screen of a CRT 2 through a data display control part 3 in accordance with a data string DCR of the coil diameter and the coiled spring pitch normalized by a data normalizing part 15. Simultaneously, the marker is displayed in the position of the coiled spring shape on the screen corresponding to a coil winding number DCW in the coil to the data set object position. Further, the coil winding number DCW in the coil is numerically displayed in the picture.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to an automatic programming device for a coil spring forming machine.

[0002]

2. Description of the Related Art FIG. 9 is a flowchart showing a process of forming a forming program by using an automatic programming device for a coil spring forming machine and forming a desired coil spring. First, the wire material diameter used to form the coil spring, the coil spring pitch of the coil spring, the coiling tool for determining the coil spring diameter, and the pitch tool forming start position for determining the coil spring pitch (hereinafter,
Parameter data including the reference position), the maximum feed speed of each tool and the line feed, and the like are set in advance (step S71). Next, the coil shape data including the number of coil turns and the coil diameter is set (step S72), and the tool operation data for operating the coiling tool and the pitch tool is set according to the predetermined conversion rule from the coil spring pitch and the coil shape data of the parameter data. A molding program is generated (step S73), and a molding program for performing a molding operation is generated from the parameter data and the tool operation data according to a predetermined conversion rule (step S74). When the forming operation is performed by the generated forming program (step S75) and the coil spring having the desired shape cannot be obtained (step S76), the tool operation data is corrected (step S77), and the forming program is generated again (step S74). ), The forming operation (step S75) is repeated until a coil spring having a desired shape is formed.

FIG. 10A shows an example of actual coil shape data. The coil shape data is sequentially set according to a desired coil shape, with the number of coil turns and the coil diameter as one set of data. As shown in FIG. 10B, in this example, the winding start is set to a coil diameter of 20 [mm], and the diameter is set to 40 in the subsequent four windings.
[mm] is indicated, and the coil spring pitch of the parameter data is 8 [mm].

In the procedure for generating the tool operation data, first, coiling tool operation data for determining the operation of the coiling tool and pitch tool operation data for determining the operation of the pitch tool are generated from the coil spring pitch of the coil shape data and the parameter data. Then, tool operation data is generated from the coiling tool operation data and the pitch tool operation data. Hereinafter, the procedure for generating the tool operation data will be described with reference to FIGS. 11 (A), (B), (C) and FIG. 10 (A). The coiling tool operation data example of FIG. 11A is generated based on the coil shape data of FIG.
It is composed of the number of coil turns and the coil diameter, and the coil diameter is represented by the amount of movement of the coiling tool from the reference position. In addition, the part where the data is empty represents that there is no change from the previous position. In the operation of the coiling tool in FIG. 11 (A), one coil does not move from the beginning of winding, but it moves from the reference position in the plus direction by 20.00 in the next 3.80, and in the next 0.10. The movement to 0.00 (return to the reference position) is performed, and finally, with the coiling tool stopped, 0.10 winding is performed to complete one molding operation. In forming the coil spring, it is necessary to return the coiling tool to the reference position in order to continue the next forming operation when one forming operation is completed and the wire is cut.
The pitch tool operation data in FIG. 11B is composed of the number of coil turns and the coil spring pitch, and the coil spring pitch is represented by the amount of movement of the pitch tool from the reference position that determines the pitch zero of the coil spring. The operation of the pitch tool in FIG. 11 (B) is as follows: 0.30 windings at the start of winding and 0.10 windings at the end of winding are performed with zero pitch (end coil correction) so that the end surface of the coil spring is flat. After the first end turn correction, 1.00 turns the pitch tool from the reference position to 8.
Then, the pitch tool is returned from 8.00 to 0.00 (reference position) so that the pitch becomes zero at 1.00 winding before the end winding correction at the end of winding. And the middle 2.
Data is generated to hold the position of 8.00 for the 60-roll portion. The tool operation data shown in FIG. 11C is composed of the number of coil turns, the coil diameter, and the coil spring pitch, and is created by combining the coiling tool operation data and the pitch tool operation data as described above. When the movements of other tools overlap during one movement, the tool movement data is generated by obtaining the intermediate point from the winding ratio.
For example, in the pitch tool operation data in FIG. 11C, the total number of turns is 0.30 to 1.30 and 8.00 from the reference position.
However, since the operation of the coiling tool overlaps from the total number of windings of 1.00, the intermediate point 5.60 is calculated and the total number of windings of 0.30 to 1.00 and 1.00 to 1.
Two up to 30 rolls are divided into moving movements. Incidentally, FIG.
The total number of turns added to the left of 1 (A) to (C) indicates the integrated value of the number of turns item.

A wire feed amount command is generated from the coil winding number of the tool operation data generated as described above, a coiling tool movement amount is calculated from the coil diameter, and a pitch tool movement command is generated from the coil spring pitch. A molding program is generated by adding a command such as a moving speed, and FIG.
The coil spring shown in (D) is manufactured.

FIG. 8 is a block diagram of an example of a conventional automatic programming device for a coil spring forming machine. The input data DI is input from the keyboard 1 by the operator, and the input control unit 4 sets the setting data DS and the switching command and setting for switching the corresponding storage unit depending on whether the setting data DS is the coil shape data DC or the tool operation data DT. A setting position command for deciding a data setting target portion for data setting in the data DS, a tool operation data generation command for generating the tool operation data DT from the coil shape data DC, and a forming program 11 for generating the tool operation data DT. The data is classified into molding program generation commands and input to the data setting control unit 5. The data setting control unit 5 selects whether to output the setting data DS to the shape data storage unit 6 or the tool operation data storage unit 7 according to the switching command, and further according to the setting position command, the data setting target portion in the setting data DS And set the setting data DS
The shape data storage unit 6 or the tool operation data storage unit 7
Output to. Further, the data setting control section 5 outputs a start instruction A to the tool operation generation section 8 according to the tool operation data generation instruction, and outputs a start instruction B to the molding program generation section 9 according to the molding program generation instruction. The tool operation data generation unit 8 coiles the coil spring pitch of the coil shape data DC stored in the shape data storage unit 6 and the parameter data DP preset in the parameter storage unit 10 according to a predetermined conversion rule by the start command A. Tool operation data and pitch tool operation data are generated, and further tool operation data DT is generated from the coiling tool operation data and pitch tool operation data and stored in the tool operation data storage unit 7. The molding program generation unit 9 receives the parameter data such as the coiling tool, the pitch tool, and the maximum speed of wire feeding stored in the tool operation data storage unit 7 and the parameter storage unit 10 according to the start command B. A molding program 11 is generated based on DP according to a predetermined conversion rule. The data display control unit 3 causes the data stored in the shape data storage unit 6 or the tool operation data storage unit 7 to be displayed on the CRT 2 via the data setting control unit 5 according to the selection of the data setting control unit 5.

[0007]

A coil spring obtained by actually performing a forming operation by a coil spring forming machine using a forming program generated by the above-described conventional automatic programming device for a coil spring forming machine is generally known. Is slightly different from the set coil shape. This is because there are unspecified elements due to the material of the wire, etc.To obtain the desired coil shape, it is repeated until the desired coil shape is obtained in the procedure of tool operation data correction, molding program generation, molding operation. Must be done. However, since the tool operation data is a collection of data of minute movement amounts of each tool, the operator can visualize the data on the screen and imagine the shape in the head to identify the data setting target part to be corrected. There was a problem that it was easy to make a mistake.

The present invention has been made to solve the above problems, and an object of the present invention is to provide an automatic programming device for a coil spring which can easily identify a data correction portion and verify the data. I am trying.

[0009]

In order to achieve the above object, the present invention provides a shape for displaying on the screen a coil spring shape created from coil shape data or tool operation data in the same screen as data setting. Display means, data setting,
Marker display means for clearly indicating which part of the coil spring is the data setting target part to be changed, and the coil winding number integration from the start point of the coil spring to the data setting target part to be set or changed It is realized by having a winding number guidance display means for indicating a value.

[0010]

In the present invention, the coil spring shape is displayed on the screen based on the coil shape data or the tool operation data,
In addition, since the marker that clearly indicates the data setting target and the integrated value of the number of coil turns are displayed, when the operator inputs the coil shape data, not only can the operator confirm the displayed coil shape, but also the tool operation data In the change, the data setting target portion can be visually determined by the displayed marker and the coil winding number integrated value, and the shape after the data change can be confirmed.

[0011]

1 is a block diagram of an automatic programming device for a coil spring forming machine embodying the present invention.
The same blocks as those in the block diagram of the prior art shown in FIG. 8 are denoted by the same reference numerals and the description thereof will be omitted. The shape data matching unit 12 uses the coil shape data DC stored in the shape data storage unit 6.
By inputting the number of coil turns and the coil diameter of the coil data and the coil spring pitch of the parameter data DP preset from the parameter storage unit 10, the three items of the number of coil turns, the coil diameter and the coil spring pitch necessary for the shape display are input. Data DCG of Tool operation data matching unit 13
Is the tool motion data DT from the tool motion data storage unit 7.
Also, the coil shape data DC is input from the shape data storage unit 6, and the first coil diameter of the coil shape data DC is added as the reference diameter to the coil diameter of the tool operation data DT to obtain the coil diameter required for the shape display. , Number of coil turns required for shape display, coil diameter and coil spring pitch 3
The item data DTG is obtained. The data normalization unit 15 follows the shape data matching unit 12 according to the selection of the data setting control unit 5.
Alternatively, each data DCG of the number of coil turns, the coil diameter, and the coil spring pitch matched from the tool operation data matching unit 13
Alternatively, the DTG is input, normalized into a data string DCR of a predetermined number of drawing units (0.5 winding unit in this embodiment), and output to the shape / guidance display control unit 16. In the winding number calculation unit 14, the data setting target unit is input from the data setting control unit 5, and the matched three items of data DCG and DTG are input from the shape data matching unit 12 or the tool operation data matching unit 13 to determine the beginning of the coil winding number. To the data setting target location, the coil winding number DCW to the data setting target location is calculated and output to the shape / guidance display control unit 16. In the shape / guidance display control unit 16, the data normalization unit 15
In accordance with the winding direction of the coil of the parameter data DP preset in the parameter data storage unit 10 from the data string DCR of the coil diameter and the coil spring pitch normalized every 0.5 turns, in the case of the left winding, from the broken line In the case of right-hand winding, a solid line and a broken line are alternately drawn every 0.5 turns from the solid line on the screen of the CRT 2 via the data display control unit 3, and the data setting target portion input from the winding number calculation unit 14 is displayed. A marker is displayed at the position of the coil shape on the screen corresponding to the number of coil turns DCW, and the number of coil turns DCW is numerically displayed on the screen.

FIG. 5 shows an example of data obtained by matching the tool operation data shown in FIG. The reference diameter of the tool operation data of FIG. 11 is 20.0, the diameter data of FIG. 5 is a value obtained by adding 20.0 to the tool operation data of FIG. 11, and the coil spring pitch is 0.00 at the winding start pitch. As shown in FIG.
The tool operation data value of is used as it is.

FIGS. 3 and 4 are diagrams for explaining the normalization in 0.5-roll units based on the matched data example shown in FIG.
FIG. 3 is a diagram for explaining the normalization of the coil diameter, in which the horizontal axis represents the number of turns of the coil and the vertical axis represents the coil diameter, and the change in the coil diameter is shown. The number of turns (cumulative number in parentheses) is shown below the coil diameter. As shown by the upward arrow in FIG. 3, the normalization of the coil diameter is based on the proportional relationship between the value of the coil diameter in units of 0.5 turns, the number of aligned coil turns, and the position of the coil diameter. Then, the value of the data string is halved, and the value of the odd-numbered data is made positive and the value of the even-numbered data is made negative to complete the normalization of the coil diameter as radius data. FIG. 4 is a diagram for explaining the normalization of the coil spring pitch, in which the horizontal axis represents the number of turns of the coil and the vertical axis represents the coil spring pitch, showing the change in the coil spring pitch. The number of coil turns (cumulative number in parentheses) shown below shows the coil spring pitch. The normalization of the coil spring pitch is also based on the proportional relationship between the value of the coil spring pitch for every 0.5 turns and the aligned number of coil turns and the position of the coil spring pitch as shown by the upward arrow in FIG. Obtain the spring pitch data string,
The normalization is completed by halving the value of the data string to form a coil spring pitch data string in units of 0.5 turns, and further obtaining a cumulative value of the coil spring pitch data string.

FIG. 6 shows data normalized based on the data example shown in FIG. 5. The number of coil turns, the coil diameter position (data row of normalized coil diameter), and the coil spring pitch (normalized) are shown. Coil spring pitch data string) and coil spring pitch position (cumulative value of coil spring pitch data string), and the coil diameter position and the coil spring pitch position are used as the coil drawing data.

FIG. 2 is a flow chart showing a series of processes for displaying the shape / guidance. It should be noted that this process is a process that is executed every time data is set / changed or the data setting target position is changed. It is determined which of the coil shape data and the tool operation data is being set / changed (step S1), and in the case of the coil shape data, the coil spring pitch of the preset parameter data is added to the coil shape data. It is matched with the data of the three items of the number of coil turns, the coil diameter, and the coil spring pitch (step S2).
In the case of tool operation data, the coil diameter at the beginning of the coil shape data is used as a reference diameter and added to each coil diameter of the tool operation data to match the data of the three items of coil winding number, coil diameter and coil spring pitch (step S
3). The number of coil turns from the beginning of the matched data to the data setting target position is added up to obtain the number of coil turns from the winding start to the data setting target position (step S4). Next, the coil diameter and the coil spring pitch of the matched data are normalized in units of 0.5 turns (step S5), it is determined whether or not it is right winding (step S6), and in the case of right winding, the solid line,
The coil shape is drawn every 0.5 turns in the order of the broken line (step S7), and when it is not right winding, the coil shape is drawn every 0.5 turns in the order of the broken line and the solid line (step S8). On the drawn coil shape, a marker is displayed at a position corresponding to the number of coil turns to the data setting target position obtained previously (step S9), and the number of coil turns is numerically displayed on the screen (step S10).

FIG. 7 is an example of a screen display of an automatic programming device for a coil spring forming machine embodying the present invention.
21 is a tool operation data setting display, 22 is a reverse display showing a data setting target portion, 23 is a parameter data setting display, 24 is a shape display, 25 is a coil shape displayed based on the tool operation data, and 26 is data setting A marker indicating the target location, and 27 is the total number of turns to the data setting target location. With respect to the coil shape of 25, the winding direction of the coil can be identified by drawing the shape of the coil as seen from the side surface with a solid line on the front side and a dotted line on the back side. That is, in this example, it can be seen that the upper left is the coil winding start point, and the drawing of the coil shape is started by the solid line indicating the front side, and the coil is the right coil in the traveling direction. In the case of left winding, drawing of the coil shape is started from the start point at the upper left with a broken line.

[0017]

As described above, according to the automatic programming device for a coil spring forming machine of the present invention, the set data is immediately displayed as a coil shape on the screen, so that the setting data can be easily verified. It is possible to prevent mistakes in data input, and when changing the data, you can easily specify the data location you want to change by the coil shape and marker display on the screen, and the guidance display of the integrated number of turns. It is possible to shorten the molding preparation time until it is obtained.

[Brief description of drawings]

FIG. 1 is a block configuration diagram of an automatic programming device for a coil spring forming machine according to the present invention.

FIG. 2 is a flowchart of a shape / guidance display process in which the device of the present invention is implemented.

FIG. 3 is a diagram illustrating normalization of a coil diameter by the device of the present invention.

FIG. 4 is a diagram illustrating normalization of a coil spring pitch by the device of the present invention.

FIG. 5 is a diagram showing an example of matching data by the device of the present invention.

FIG. 6 is a diagram showing an example of normalized data obtained by the device of the present invention.

FIG. 7 is a screen display example in which the device of the present invention is implemented.

FIG. 8 is a block configuration diagram of a conventional automatic programming device for a coil spring forming machine.

FIG. 9 is a flowchart showing a process up to spring forming by a conventional device.

FIG. 10 is a diagram showing an example of coil shape data used in the conventional device and the device of the present invention.

FIG. 11 is a diagram showing examples of coiling tool operation data, pitch tool operation data, and tool operation data used in the conventional apparatus and the apparatus of the present invention.

[Explanation of symbols]

 1 keyboard 2 CRT 3 data display control unit 4 input control unit 5 data setting control unit 6 shape data storage unit 7 tool operation data storage unit 8 tool operation data generation unit 9 molding program generation unit 10 parameter storage unit 11 molding program 12 shape data Matching unit 13 Tool operation data matching unit 14 Winding number calculation unit 15 Data normalization unit 16 Shape / guidance display control unit

Claims (1)

[Claims] 1. From coil shape data composed of a coil diameter and a number of coil turns set based on a desired coil spring shape, and parameter data consisting of preset constants and various constants including a wire material diameter. A coil shape data conversion means for generating tool movement data composed of a movement amount of the coiling tool that determines the coil diameter and a movement amount of the pitch tool that determines the coil spring pitch; and the coiling tool and the pitch from the tool movement data. An automatic programming device for a coil spring forming machine, which is provided with tool operation data conversion means for respectively determining the movement amount and speed of the tool and the wire feeding amount and the wire feeding speed, and which generates a forming program in the form of a numerical control program for forming the coil spring. In the coil shape data, tool operation data, and From the parameter data, the shape display means for displaying the shape of the coil spring to be formed, and the data setting target portion in the data setting and modification of the coil shape data and the tool operation data are displayed in the coil spring shape displayed by the shape display means. A coil display means for clearly indicating the number of turns of the coil from the starting point of the coil shape data and the tool operation data to the data setting target location and displaying the number of turns. Automatic programming device for spring forming machines.