KR200216175Y1 - Apparatus for manufacturing left hand or right hand spring outer-diameter - Google Patents

Abstract

The present invention relates to a left and right spring outer diameter processing apparatus capable of manufacturing a left or right spring without a separate jig setting work. In the general spring manufacturing apparatus was a structure that is operated by one cam shaft, the subject innovation is composed of two cam shafts.

Basically, the driving of the present invention is controlled by the operation of the servo motor 300 according to the command input to the CNC device 200, the servo motor 300 is connected to the pulley installed on the front and rear movement cam 400 shaft power To pass. The front and rear movement cam 400 and the vertical movement cam 500 is interlocked by the timing belt 210 to operate at a rotation ratio of 1: 1, and to rotate the front and rear movement cam 400 and the vertical movement cam 500. As a result, a vertical movement table 600 and a horizontal movement table 700 which are moved up and down and down are provided. Displacement amount of the vertical movement table 600 and the front and rear movement table 700 is formed so that the vertical displacement amount is double the front and rear displacement amount, the upper and lower ends of the front and rear movement table 700 is formed with a slot 710 coiling pin Coiling pin assembly (40) equipped with the 800 is coupled, the position of the coiling pin 800 is determined according to the front and rear movement cam 400 and the vertical movement cam 500 to produce the desired spring. .

The upper and lower movable cam 500 of the two cams to select the left or right spring to adjust the vertical position of the coiling pin 800 during manufacture, and the front and rear movable cam 400 in conjunction with the coiling pin 800 It is an outside diameter processing device for the left and right springs, which is configured to determine the outside diameter.

The present invention is designed to make it easy for anyone to process the spring, and even non-skilled workers can produce a uniform product, and it is not necessary to set a new jig when switching to the left or right spring. There is an advantage to improve and maximize productivity.

Description

Apparatus for manufacturing left hand or right hand spring outer-diameter}

The present invention relates to a device for processing the outer diameter of the spring, more specifically

It relates to a left and right spring outer diameter processing device that can selectively process a left or a right spring in a two-point manner.

Conventional spring processing apparatus has a problem that the setting process is complicated and difficult to produce a uniform product only by skilled workers and the setting time takes a lot when the conversion to the left or right spring, the productivity is reduced and a lot of tools.

In order to solve the above problems there was an invention of Patent No. 6000265 filed in the United States.

Hereinafter, the present invention will be described in detail with reference to FIGS. 1 to 3.

As shown, the conventional spring manufacturing apparatus has a main body 1, a coiling assembly 20 mounted on the upper surface of the main body, a wire supply device 5 and a controller 70 for adjusting the machine. It consists of.

The coiling assembly 20 is composed of a forming table 2, a feed mechanism 10, a mandrel 3, a point tool assembly 30 having a pitch tool, a cutting tool and a point tool for pitch forming. .

The point tool assembly 30 is a vertical movement table 31 and the front and rear movement table

Each of the moving tables is moved up and down by two independent driving motors 21 and 22, respectively.

On the vertical movement table 31, a parallel slide table 35, two inclined slide tables 37 and 41, and a link arm 34 are provided. The parallel slide table 35 slides parallel to the surface of the forming table 2 and the feed direction of the wire, and the inclined slide tables 37 and 41 are inclined at approximately 45 ° to the wire feed direction. And move in a direction parallel to the molding table 2. The link arm 34 moves the parallel slide table 35 and the inclined slide tables 37 and 41 at the same distance in relation to the movement of the front and rear movement table 46.

On the other hand, the inclined slide tables 37 and 41 are placed on the respective slide rails 36 and 40, and the slide tables 37 and 41 are used for transmitting the force adjacent to the link arm 34. The shafts 38 and 42 are provided. As a result, when the front and rear movement table 46 is advanced, the link arm 34 can push the adjacent shafts 38 and 42 to move the point tool to the designated position.

In the above structure, the vertical movement table 31 and the front and rear movement table 46 are

At the same time, it is possible to move to a specified position.

Next, the coiling direction change and the diameter of the coil will be described.

According to the position of the up-and-down movement table 31 which moves by the up-and-down drive motor 21, manufacture of a left right or a right right spring is attained. The change of the diameter can be produced by the spring of the desired diameter by the forward or backward movement of the front and rear movement table 46.

When the vertical movement table 31 is raised, it is possible to manufacture the right-hand spring, and when the vertical movement table 31 is lowered, the left-hand spring can be manufactured.

As described above, the conventional spring manufacturing apparatus is provided with a vertical movement table 31 and a front and rear movement table 46 to enable the manufacture of left or right springs, and the driving of these tables 31 and 46 is driven respectively. This is achieved by the motors 21 and 22. For this reason, the structure of the machine becomes complicated and the production cost also increases.

In addition, the gear 31 is required for the movement of the tables 31 and 46, which has a problem of the possibility of precision deterioration and frequent failures due to wear of gear teeth.

Therefore, the present invention has been devised to solve the above problems,

It aims to improve the precision of the spring to be processed by inputting the dimensions of the pitch, number of turns, and the outer diameter desired by the operator by the CNC machine, and to provide a cheaper left and right spring outer diameter processing device as a simpler structure machine. .

In addition, in the processing of the left and right springs, the vertical movement table and the front and rear movement table are controlled by one drive motor, which reduces the mechanical errors generated when driven by two independent motors, and at the same time enables precise machining. It is another object to provide a winding spring outer diameter processing apparatus.

Figure 1-Spring manufacturing apparatus of the conventional two point method.

Figure 2-State diagram at the time of manufacture of the right winding spring according to FIG.

Figure 3 is a state diagram when manufacturing the left-hand spring according to FIG.

4-a front view according to an embodiment of the present invention.

5-a detailed view of the cam device according to an embodiment of the present invention.

6 is a view showing a moving distance relationship of the coiling pin assembly according to an embodiment of the present invention.

<Description of the reference numerals for the main parts of the drawings>

10: mandrel 20: cutting tool

30: pitch tool 40: coiling pin assembly

100: leveling section 101: feeding section

102: feed roller 200: CNC device

210: timing belt 300: servomotor

400: front and rear moving cam 500: vertical moving cam

600: vertical moving table 700: front and rear moving table

710: slot 800: coiling pin

810: coiling point holder 900: vertical guide bearing

901: front and rear guide bearing 910: compression spring

920: tension spring

The present invention for achieving the above object is a leveling part for forming a straight line material, a feeding part for transferring a straight line material to the forming part, a feed roller, a pitch tool for pitch adjustment, cutting the finished spring Claims [1] A left and right spring external diameter processing apparatus having a two-point coiling pin having a cutting tool and a mandrel, comprising: a CNC apparatus comprising a computer and a numeric box; A servo motor driven according to the data stored in the CNC device; A cam device formed of a front and rear moving cam and a vertical moving cam interlocked with the servo motor; An up and down moving table which is moved back and forth and an up and down moving table which is moved up and down according to the rotation of the front and rear moving cam and the vertical moving cam; A coiling pin assembly which is vertically fastened to slots formed at both ends of the front and rear movement table and moves according to the displacement of the front and rear movement table and the vertical movement table; Installed in the coiling pin assembly is composed of a coiling pin for spring molding to maintain a constant angle to the left and right spring outer diameter processing device for processing the left and right spring at the same time as the technical gist.

In particular, the present invention is suitable for compression spring processing is an advantage that can be processed to a compression spring of various dimensions with precise dimensions and the left and right spring outer diameter manufacturing apparatus that can reduce the failure rate.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Figure 4 is a front view according to an embodiment of the present invention, Figure 5 is a detailed view of the cam device of Figure 4, Figure 6 is a view showing a moving distance relationship of the coiling pin assembly 40 according to an embodiment of the present invention to be.

As shown, the spring manufacturing apparatus according to the present invention is a process from the material to the pre-processing step as in the structure of the conventional spring manufacturing apparatus, which is a straight line with the leveling portion 100 to make a non-uniform material in a straight line It consists of a feeder 101 and a feed roller 102 for conveying to the coiling pin 800 for the processing of the material.

Pitch tool 30 for adjusting the pitch of the spring, up and down cutting tool 20 for cutting the coiled spring, guides the coiling direction when forming the spring and spring when cutting the spring by the cutting tool 20 The mandrel 10 for cutting and supporting the inner diameter surface of the bar is well known in the art and will not be described in detail below.

The left and right spring outer diameter manufacturing apparatus according to the present invention is largely CNC device 200 and servo motor 300, and the front and rear movement cam 400, vertical movement cam 500, vertical movement table 600 and the front and rear movement table 700 ) And the coiling pin assembly 40 and the coiling pin 800.

Next, the CNC apparatus 200 will be described. The configuration of the CNC apparatus 200 is composed of a computer controlling a numeric box and a numeric box.

The role of the computer is to quickly process the programmed content or information, and to store in the internal memory, and to precisely control the complex shape or three-dimensional path to enable the operator to process the desired spring. The computer consists of a microprocessor unit, internal memory, and input and output architecture. The numeric box includes a keyboard, an electronic calculator and an auxiliary memory device for inputting or modifying a program.

CNC apparatus 200 according to the embodiment of the present invention is to input various data related to the spring, that is, the outer diameter, the number of turns, the pitch, the production quantity, etc. Unlike the conventional mechanical coil spring manufacturing apparatus, the spring specification is changed This eliminates the hassle of changing the position and shape of the cams connected to the gear unit.

Next, the servo motor 300 will be described.

The servo motor 300 is driven in accordance with the program input to the CNC device 200 described above, the servo motor 300 is connected to the front and rear movement cam 400 to be described later, and also the front and rear movement cam 400 Is connected to the vertical movement cam 500 to accurately position the coiling pin 800 to enable the manufacture of the spring desired by the manufacturer.

The CNC apparatus 200 and the servomotor 300 are well known technologies, and thus detailed descriptions thereof will be omitted.

Next, the front and rear movement cam 400 and the vertical movement cam 500 will be described.

The present invention has two camshafts, and determines the positions of the front and rear movement table 700 and the vertical movement table 600 which will be described later, which vary according to the displacement of the cams 400 and 500. The front and rear movement cam 400 and the vertical movement cam 500 are connected by the timing belt 210 to be interlocked at a ratio of one-to-one (1: 1) so that in any case, the front and rear movement cam 400 and the vertical movement cam 400 are up and down. The mobile cam 500 is capable of accurate operation.

On the other hand, the displacement of the vertical movement cam 500 is set to twice the displacement of the front and rear movement cam 400. The front and rear movement cam 400 has a symmetrical shape and serves to determine the outer diameter of the spring to be processed. In the front and rear movement cam 400, a section between 135 ° and 225 ° is designed so that there is no displacement to prevent interference of the coiling pin 800 when converting from the right spring to the left spring.

The vertical movement cam 500 is a device for the conversion of the left or right spring when the machining, the vertical movement of the coiling pin is generated by the operation of the vertical movement cam and the coiling pin position when forming the right winding spring is the material outlet The center of the biasing is biased upwards, while in the left-hand spring molding the position of the coiling pin 800 is biased downwards relative to the center of the material outlet.

By the operation of the up and down moving cam 500, it is not necessary to update the settings such as changing the cam when converting to the left or right spring and manufacturing springs of various dimensions, thereby reducing work time and improving work efficiency. will be.

Hereinafter will be described in detail with respect to the spring to be processed according to the position of the coiling pin 800 by the operation of the front and rear movement cam 400 and the vertical movement cam 500 to interlock.

First, the case of the machining of the left-hand spring will be described. When machining the left winding spring, the coiling pin 800 is located below the material supply center, and the maximum displacement of the vertical movement cam 500 corresponds to the minimum displacement of the front and rear movement cam 400. It is possible to process the spring with the largest outer diameter of. And at the position of the maximum displacement portion of the front and rear movement cam 400 and the vertical movement cam 500 corresponding thereto will be able to process the left-hand spring with the minimum outer diameter.

Next, the case of the processing of the dominant spring will be described. When machining the right-hand spring, the coiling pin 800 is located in the upper portion with respect to the material supply center, the minimum displacement of the vertical movement cam 500 corresponds to the minimum displacement of the front and rear movement cam 400 The right-hand spring can be machined with the largest outer diameter of the spring. On the other hand, at the position of the maximum displacement portion of the front and rear movement cam 400 and the vertical movement cam 500 corresponding thereto, a right winding spring having a minimum outer diameter is machined.

Since there is no displacement in the region of 135 ° to 225 ° of the front and rear movement cam 400, there is no front and rear movement of the coiling pin 800, while the left and right movement springs are processed by the vertical movement cam 500. Positional change of the coiling pin (800) is to occur.

Next, the front and rear movement table 700 and the vertical movement table 600 moving according to the operations of the front and rear movement cam 400 and the vertical movement cam 500 will be described.

The front and rear movement table 700 and the vertical movement table 600 are linear guide bearings 900 so that the front and rear movement up and down simultaneously and quickly and flexibly according to the operation of the front and rear movement cam 400 and the vertical movement cam 500. Was supported on both sides.

On the other hand, when the forward and backward movement table 700 moves forward and backward by operating the displacement of the front and rear movement cam 400, when moving backward, the forward and backward movement table 700 is pushed out by the elastic energy stored in the compression spring 910. . When the up and down moving table 600 is raised, it is operated by the displacement of the up and down moving cam 500, and when it is down, it is returned to its original position by its own weight and the tension spring 920.

Two vertical guide bearings 900 are installed in the vertical direction on the rear surface of the vertical movement table 600 so that the vertical movement table moves up and down, and also for the front and rear movement table 700 on the vertical movement table 600. Two front and rear guide bearings 901 are installed in the horizontal direction so that the vertical movement table 600 and the front and rear movement table 700 move simultaneously.

Next, the coiling pin assembly 40 will be described.

The coiling pin assembly 40 is installed at right angles to a slot 710 formed at a portion protruding at an angle of 45 ° from both ends of the front and rear movement table 700 and moves along the front and rear movement table 700. The slot 710 can be moved. The coiling pin assembly 40 has a coiling point holder 810 and a coiling pin 800 coupled thereto.

In addition, the upper and lower two independent coiling pin assemblies 40 are always moved by the same distance and at the same time always maintain the same angle. Hereinafter, the moving distance relationship of the coiling pin assembly 40 will be described with reference to FIG. 6.

In FIG. 6, point A1 is the intersection of the coiling pin assembly 40 and the front and rear movement table 700, A2 is the intersection of both slots 710 formed in the front and rear movement table 700, and A3 is the coiling pin 800. The length h1 of the sides A1 and A2 and the length h2 of the sides A1 and A3 always maintain the same distance so that the triangles A1-A2-A3 form an isosceles triangle so that the two can be moved according to the motion of the front and rear cams 400. The conveying distance of the coiling pin assembly 40 is always kept constant.

Next, the coiling pin 800 for spring molding installed in the coiling pin assembly 40 will be described.

The coiling pin 800 is installed in parallel with the coiling pin assembly by a coiling point holder 810 at the free end of the coiling pin assembly 40, respectively + relative to the center of the material outlet. It forms an angle of 45 ° to -45 ° and maintains the forming point along the spring outer diameter centerline regardless of the change in the outer diameter size of the spring.

Operation according to an embodiment of the present invention by the configuration described above is as described below.

First, the operator inputs the diameter, pitch, number of turns, etc. of the spring into a predetermined program through the keyboard to process the desired spring. According to the above input program, the raw material is transferred to the space for spring processing through the leveling part 100, the feeding part 101, and the feed roller 102 for spring processing.

At the same time, the vertical movement table 600 moves in a direction perpendicular to the material input direction, and the front and rear movement table 700 moves in parallel with the material input direction. The movement of the vertical and horizontal movement tables 600 and 700 is adjusted by the operation of the vertical and horizontal movement cams 500 and 400 that interlock. In addition, the coiling pin assembly 40 coupled to the slot 710 formed at both ends of the front and rear movement table 700 at right angles changes its position according to the movement of the vertical and horizontal movement tables 600 and 700. It is then positioned at the point for the desired spring production.

The following describes the change of the coiling direction and the change of the coil diameter.

First, the manufacturing process of the dominant spring will be described.

The vertical movement table 600 is located at the upper position, and the front and rear movement table 700 is positioned according to the selected coil diameter so that the right-hand spring is processed and the position of the mandrel 10 is determined according to the coil diameter.

Next, the manufacturing process of a left hand spring is demonstrated.

The vertical movement table 600 is located at the lower portion, and the front and rear movement table 700 is positioned according to the selected coil diameter so that the left-hand spring is processed and the position of the mandrel 10 is determined according to the coil diameter.

When the coiling is finished, the cutting tool 20 is operated to cut all the spring manufacturing process by cutting the spring in contact with the mandrel 10.

As described above, the present invention is a spring manufacturing apparatus that can selectively process the left or right spring, basically the present invention is a device operated by the CNC device, simply by inputting the specifications of the spring desired by the operator with the keyboard It is a left and right spring outer diameter processing device that has an advantage.

In addition, since the front and rear movement cam and the vertical movement cam moves up and down and the front and rear movement table, there is no need for a plurality of gear devices as in the related art, and there is an advantage in that a predetermined spring can be manufactured with an accurate rotation ratio by interlocking with a servo motor.

In addition, when changing the direction of the coiling, there is no need to make a new setting, unlike the conventional, it is possible to shorten the working time is improved efficiency, and accordingly there is an effect that can economically process the spring at a low cost.

As an inexpensive manufacturing apparatus, it is possible not only to manufacture various small springs, but also to process springs of precise dimensions.

Claims (4)

Leveling unit 100 for forming the material in a straight line, feeding unit 101 and feed roller 102 for transferring the straight material to the forming unit, the pitch tool 30 for pitch adjustment, cutting the finished spring In the general left and right winding spring outer diameter processing apparatus by the two-point coiling pin provided with the cutting tool 20 and the mandrel 10 to A CNC device 200 composed of a computer and a numeric box; A servo motor 300 driven in accordance with the data stored in the CNC apparatus 200; A cam device composed of a front and rear moving cam 400 and a vertical moving cam 500 interlocked with the servo motor 300; A front and rear movement table 700 which is moved back and forth according to the rotation of the front and rear movement cam 400 and the vertical movement cam 500 and the vertical movement table 600 which is moved up and down; A coiling pin assembly 40 fastened vertically to slots 710 formed at both ends of the front and rear movement table 700 and moving according to the movement of the front and rear movement table 700; The coiling pin assembly 40 is installed on the coiling pin assembly for maintaining a constant angle spring coiling pin (800); comprising a left and right spring outer diameter processing apparatus comprising a. The left and right spring outside diameter processing apparatus according to claim 1, wherein the vertical movement table (600) is provided with front and rear guide bearings (901) for moving back and forth on the upper surface of the vertical movement table (600). The cam device of claim 1, wherein the front and rear movement cams 400 and the vertical movement cams 500 are connected by the timing belt 210 to be interlocked at a rotational ratio of one-to-one (1: 1), thereby enabling accurate operation at all times. Left and right spring outer diameter processing apparatus characterized by improving the processing accuracy. According to claim 1, the front and rear movement cam 400 is 135 ° ~ to prevent the interference of the two coiling pins 800 when switching the manufacture of the spring from the left spring to the right spring or from the right spring to the left spring spring Left and right spring outer diameter processing device, characterized in that the cam is designed so that no displacement between 225 °.