JP2743344B2 - Tooltip holder for spring manufacturing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spring manufacturing apparatus (in this specification, a spring manufacturing apparatus refers to a spring manufacturing machine for manufacturing a spring as a finished product, a spring manufacturing machine for manufacturing a spring as a semi-finished product, and The present invention relates to a tool tip holder for a semi-finished product spring processing machine [what is called a secondary processing machine] which performs a predetermined process on a semi-finished product spring to obtain a completed product.

[0002]

2. Description of the Related Art The following apparatus is known as a conventional spring manufacturing apparatus. A machine frame with a vertical front wall,
A wire rod processing space formed in the center of the front wall of the machine frame, a wire guide fixed to the front wall for guiding the wire fed toward the wire rod processing space, and a wire rod processing space of the wire guide. At least a pair of wire feed rollers, which are rotatably provided on the front wall on the opposite side and feed the wire while clamping it, are provided on the front wall so as to be able to advance and retreat toward the wire processing space, and a predetermined tool is attached. Spring manufacturing devices with the required number of tool mounting slides are known. A bolt is screwed into a screw hole formed in the tool mounting slide through two vertically long slots formed on the front surface of the tool mounting slide so that the tool mounting member penetrates in the front-rear direction. By doing so, it can be attached up and down freely,
A bolt is screwed into a screw hole formed in the tool mounting member on the upper surface of the tool mounting member through two long holes in the front-rear direction formed by the tool so as to penetrate vertically in the tool mounting member. It was mounted so that the position could be adjusted. In the above, the vertical position and the front-back position of the tip of the tool with respect to the reference position of the wire rod processing space are adjusted as follows. That is, the two bolts are loosened, the tool mounting member is slid up and down with respect to the tool mounting slide, then the two bolts are tightened again, and the two bolts are loosened to move the tool to the tool mounting member. This is done by sliding back and forth and then tightening the two bolts again.

[0003]

Disadvantages of the prior art The conventional spring manufacturing apparatus has the following disadvantages. That is, since the bolt is screwed into the screw hole through the long hole, the tool mounting member has a degree of freedom to move in any direction within the contact surface with respect to the tool mounting slide when the bolt is loosened. ,Also,
Similarly, there is a degree of freedom that the tool moves in an arbitrary direction within the contact surface with respect to the tool mounting member, and as a result, there is a disadvantage that it is difficult to finely adjust the vertical position and the front-back position of the tip of the tool. .

[0004]

The present invention employs the following means to solve the above-mentioned drawbacks. The present invention
A tool tip holder 1 mounted on a tool mounting slide 11 of a spring manufacturing apparatus 1 provided to be able to advance and retreat toward a wire rod processing space 5 along a vertical front wall 3 of a machine frame 2.
6, a holder main body 17 attached to the tool mounting slide 11, and the holder main body 17 is vertically slidable and fixed at a desired position while maintaining a parallel state with respect to the tool mounting slide 11. , And a tool tip attachment body 19 to which the tool tip 20 is detachably attached.
A recess 43 is formed in the sliding body 18, which is open toward the front and toward the wire processing space 5 and into which the tool tip mounting body 19 fits without play up and down. A part of the body 19 is fitted, and the bolt 51 is screwed into a pair of left and right screw holes 52 formed in the rear wall 44 of the recess 43 through a pair of left and right through holes 50 formed in the tool tip attachment body 19. The rear wall 44 of the recess 43 and the tool tip mounting body 19 are located between the pair of left and right screw holes 52 between the rear wall 44 of the recess 43 and the tool tip mounting body 19. A first position adjusting piece 57 for forming a gap therebetween is interposed. One of the first position adjusting piece 57 and the tool tip mounting body 19 is provided so that the tool tip mounting body 19 swings back and forth. Curved convex surface 58 is shaped Are curved concave 59 curved convex surface 58 on the other is along is formed, the recess 43, wire processing space opposite side wall 46 that faces the 5 and tooltip mount 1
9, a second position adjusting piece 63 for forming a gap therebetween is interposed. The tool tip mounting body 19 is attached to either the second position adjusting piece 63 or the tool tip mounting body 19. A curved convex surface 64 that swings back and forth is formed, and a curved concave surface 65 along the curved convex surface 64 is formed on the other side, and the rear part of the head 51 a of the bolt 51 for fixing the tool tip attachment body 19 faces rearward. The tapered portion 53 is formed such that the tapered portion 53 comes into contact with the inclined surface 68 formed on the tool tip attachment body 19 and facing the wire processing space 5 inclined downward from the front to the rear. Is what it is.

[0005]

The present invention has the following functions. The tool tip is adjusted by adjusting the positions of a slide body 18 that slides only in a direction along the front wall 3 of the machine frame 2 and a tool tip attachment body 19 that swings only in a direction perpendicular to the front wall 3 of the machine frame 2. Since the position of the tip of the tool tip 20 can be adjusted, it is easy to finely adjust the position of the tip of the tool tip 20.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a first embodiment of the present invention; In this specification, “front” means the front side of FIG. 1, “rear” means the same back side, “left” means the left side of FIG. 1, and “right” means the right side of the figure.

FIG. 1 is a schematic front view of a spring manufacturing apparatus 1. The spring manufacturing apparatus 1 is fed toward a machine frame 2 having a vertical front wall 3, a wire processing space 5 formed in the center of the front wall 3 of the machine frame 2, and the wire processing space 5. A wire guide 6 fixed to the front wall 3 for guiding the wire, and at least one pair of wire guides 6 rotatably provided on the front wall 3 on the opposite side of the wire processing space 5 to the wire guide 6 while pinching the wire. A wire feed roller 7, a bending die slide 8 provided opposite the wire guide 6 across the wire processing space 5 and provided on the front wall 3 so as to be able to advance and retreat toward the wire processing space 5, and the front wall 3. Wire processing space 5
, And a required number of tool mounting slides 11 provided so as to be able to move forward and backward. The bending die slide 8 is provided on the front wall 3 so as to be able to advance and retreat toward the wire rod processing space 5, and is provided on the main body 8 a so as to swing in parallel (left and right) with the front wall 3. First rocking piece 8b
And the first rocking piece 8b meshes with the gear mechanism, and
A second swinging piece 8c is provided on the main body 8a so as to swing parallel to the front wall 3 (left and right). A bending die is attached to the first rocking piece 8b with or without the use of a tool tip holder 16 described later. Rocking piece 8
b is configured to swing at a predetermined time by swinging the second swinging piece 8c by a known operating device.

[0008] The bending die slide 8 (main body 8a)
The tool mounting slide 11 is urged away from the wire rod processing space 5 by a spring (not shown). The bending die slide 8 (main body 8a) and the tool mounting slide 11 are made to protrude toward the wire rod processing space 5 at a predetermined time by an actuator (not shown) including a cam and the like, and a force from the actuator is applied. Is not applied, the spring retreats from the wire processing space 5 by the force of a spring (not shown) or the like.

Hereinafter, the wire processing space 5 of the left tool mounting slide 11 which slides horizontally will be described with reference to FIGS.
The tool tip holder 16 attached to the side end will be described. The tool tip holder 16 is vertically slidable and fixed at a desired position while maintaining a parallel state with the tool mounting slide 11 on the holder main body 17 attached to the tool mounting slide 11. Body 18 that is adapted to be
, And a tool tip attachment body 19 which is detachable.

The holder main body 17 has a U-shaped cross section having a front wall 25 and upper and lower walls 26 connected to the upper and lower edges of the front wall 25. A hole 27 is formed, and a bolt 28 is screwed into a screw hole 29 formed in the tool mounting slide 11 through the through hole 27 so that the holder main body 17 is mounted on the tool mounting slide 11. The rear portion of the upper and lower walls 26 is configured to hold the tool mounting slide 11.

The sliding body 18 includes a base 34 in a state in which the front-rear movement is restricted by the front wall 25 of the holder main body 17 and the tool mounting slide 11 with the holder main body 17 fixed to the tool mounting slide 11. The tool mounting slide 11 has a distal end 35 which is provided in contact with the end face of the tool mounting slide 11 on the wire rod processing space 5 side.

A screw hole 36 is formed in the base 34 so as to penetrate in the vertical direction.
7 is screwed through through holes 38 formed in the upper and lower walls 26. The base 34 has a vertically long slot 39 for preventing the base 34 from colliding with or interfering with the bolt 28 when the base 34 moves up and down.
With such a configuration, by loosening one bolt 37 and tightening the other bolt 37, the sliding member 18
The vertical position of the sliding member 18 can be adjusted and the sliding member 18 can be fixed so as not to move. A vertically long projection 4 is formed on the surface of the base 34 facing the tool mounting slide 11.
0 is provided, and this projection 40 is
Is fitted in the groove 41 formed in the groove. With the above-described configuration, the sliding body 18 can be moved only vertically with respect to the tool mounting slide 11 and the holder main body 17.

A concave portion 43 is formed in the distal end portion 35 of the sliding body 18 and is open to the front and the side of the wire processing space 5. By forming the concave portion 43, the distal end portion 35 has a rear wall 44, a vertical An opposing side wall 46 that opposes the wall 45 and the wire rod processing space 5 is formed. The base 47 of the tool tip attachment body 19 is fitted into the recess 43 without play in the vertical direction. Base 4 of tool tip attachment body 19
The bolt 51 is screwed into a pair of left and right screw holes 52 formed in the rear wall 44 of the recess 43 through a pair of left and right through holes 50 formed in the recess 7.

A tapered portion 53 narrowing rearward is formed at the rear of the head 51a of the bolt 51. A taper portion 54 narrowing rearward facing the taper portion 53 forms a counterbore of the through hole 50. It is formed at the rear (rear) of the portion 50a.

Between the rear wall 44 and the base 47 between the pair of right and left screw holes 52, between the rear wall 44 of the recess 43 and the base 47 of the tool tip mounting body 19. A first position adjusting piece 57 for forming a gap is interposed,
The first position adjusting piece 57 is shaped like a vertically long bar having a semicircular horizontal cross section and has a curved convex surface 58 on the base 47 side, and a concave portion 60 having a curved concave surface 59 along which the curved convex surface 58 extends. Are formed on the base 47. With such a configuration, the tool tip attachment body 19 is provided with the first position adjusting piece 57.
, And the base 47 can move left and right by the first position adjustment piece 57 sliding left and right.

A second position adjusting piece 63 for forming a gap between the side wall 46 of the recess 43 facing the wire rod processing space 5 and the base 47 of the tool tip mount 19 is interposed. The second position adjusting piece 63 has a vertically long bar shape having a semicircular horizontal cross section, has a curved convex surface 64 on the base 47 side, and has a concave concave surface 65 along which the curved convex surface 64 extends. A location 66 is formed in the base 47.
With such a configuration, the tool tip attachment body 19 is allowed to swing back and forth around the first position adjusting piece 57.

As schematically shown in FIG. 8, in a state where the second position adjusting piece 63 is in close contact with the opposing side wall 46 and the base 47,
The center L1 of the tapered portion 54 is the screw hole 52 (bolt 51).
Is slightly biased toward the wire processing space 5 side (right side) from the center L2. Therefore, when the bolt 51 is tightened, the left end of the tapered portion 53 comes into contact with the left end of the tapered portion 54, and the base portion 47 is formed by an action like a wedge.
The (tool tip attachment body 19) is pressed against the opposing side wall 46. As is clear from this description, the tapered portion 5
The left end of 4 is formed as an inclined surface 68 which is inclined downward from the front to the rear and faces the wire processing space 5 side.

With the above configuration, the left and right bolts 5
After the tool tip 20 is slightly loosened to adjust the front and rear position of the tool tip 20, the left and right bolts 51 are tightened again, so that the tool tip attachment body 19 can be firmly fixed to the sliding body 18. At the time of the above adjustment, the tip of the tool tip 20 makes an arc movement, but since the movement amount is small, it can be regarded as a front and back linear movement.

The tip 48 of the tool tip mounting body 19
Has a recess 71 opened forward and on the wire processing space 5 side, and the tool tip 20 is fitted into the recess 71.
The tool tip 20 is detachably fixed to the tool tip attachment body 19 by screwing a screw 73 into a screw hole 74 formed in the tip end portion 48 through a through hole 72 formed in the tool tip 20.

[0020]

[Modifications and the like] Modifications and the like will be described below. (1) The tool tip holder 16 to which the separate tool tip 20 is attached as described above is also attached to the other tool attachment slides 11. (2) When the tool tip holder 16 of the present invention is attached to the tool attachment slide 11 which is vertical in the vertical direction, the tool tip holder 16 is attached to the tool attachment slide 11 such that the vertical direction of the tool tip holder 16 is oriented in the left-right direction. It is. (3) When the tool tip holder 16 of the present invention is mounted on the tool mounting slide 11 of the spring manufacturing apparatus in which the wall corresponding to the front wall 3 is horizontal, the vertical direction of the tool tip holder 16 is horizontal. The tool tip holder 16 is attached to the tool attachment slide 11 such that the front-rear direction of the tool tip holder 16 is the vertical direction. (4) The tools include all wire rod processing tools attached to the spring manufacturing apparatus 1 , such as bending dies, forming tools, cutting tools, and cutting receiving tools. (5) Base 4
7 may have a curved convex surface, and the first position adjusting piece 57 and the second position adjusting piece 53 may have curved concave surfaces.

[0021]

According to the present invention, the following effects can be obtained by the above-described configuration. According to the first aspect of the present invention, the position of the tip of the tool tip can be adjusted by adjusting the positions of the sliding body that slides only up and down and the tool tip attachment body that swings only back and forth. Fine adjustment of the tip position is easy. According to the first aspect of the present invention, since the tool tip only needs to be fixed to the tool tip attachment body, that is, unlike the related art, the tool tip does not need a long hole, so that the tool tip can be downsized. As a result, tooltips can be manufactured at low cost. Therefore, when the tool tip is damaged, the inexpensive tool tip may be replaced, and the running cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a simplified front view for explaining the outline of a spring manufacturing apparatus.

FIG. 2 is a front view of a main part showing an embodiment of the present invention.

FIG. 3 is an end view taken along line III-III of FIG. 2;

FIG. 4 is an enlarged view of a part A of FIG. 2;

FIG. 5 is a sectional view taken along line VV of FIG. 4;

FIG. 6 is a sectional view taken along line VI-VI of FIG. 5;

FIG. 7 is an end view taken along line VII-VII of FIG. 5;

FIG. 8 is a schematic diagram for explaining the operation of the spot facing portion.

[Explanation of symbols]

 1 Spring manufacturingapparatus  2 Machine frame 3 Front wall 5 Wire processing space 11 Tool mounting slide 16 Tool tip holder 17 Holder body 18 Sliding body 19 Tool tip mounting body 20 Tool tip 46 Opposite side wall 47 Base 48 Tip 50 Through hole 50a Counterbore 51 Bolt 51a Head 52 Screw hole 53 Taper portion 54 Taper portion 57 First position adjusting piece 58 Curved convex surface 59 Curved concave surface 60 Depression 63 Second position adjusting piece 64 Curved convex surface 65 Curved concave surface 66 Concave portion 68 Inclined surface

Claims (1)

(57) [Claims] 1. A tool tip holder 16 mounted on a tool mounting slide 11 of a spring manufacturing apparatus 1, which is provided to be able to advance and retreat toward a wire rod processing space 5 along a vertical front wall 3 of a machine frame 2. The holder main body 17 attached to the tool mounting slide 11 and the holder main body 17
A slider 18 which is slidable up and down while being kept parallel to the tool mounting slide 11 and is fixed at a desired position, and a tool chip 20 attached to the slider 18 is detachably attached. A recess 43 is formed in the sliding body 18, which is open toward the front and the wire rod processing space 5, and into which the tool tip attachment body 19 fits without play up and down. A part of the tool tip attachment body 19 is fitted into the recess 43, and a bolt 51 is inserted through a pair of left and right through holes 50 formed in the tool tip attachment body 19.
Are screwed into a pair of left and right screw holes 52 formed in the rear wall 44 of the recess 43, and between the rear wall 44 of the recess 43 and the tool tip attachment body 19, a pair of left and right screw holes 52 are formed. A first position adjusting piece 57 for forming a gap between the rear wall 44 of the recess 43 and the tool tip mounting body 19 is interposed between the first position adjusting piece 57 and the tool. Tip mounting body 1
9, a curved convex surface 58 that allows the tool tip attachment body 19 to swing back and forth is formed, and a curved concave surface 59 along which the curved convex surface 58 is formed is formed on the other side. Opposite side wall 4 facing processing space 5
A second position adjusting piece 63 for forming a gap therebetween is interposed between the second position adjusting piece 63 and the tool tip mounting body 19. A curved convex surface 64 that allows the tool tip attachment body 19 to swing back and forth is formed, and the curved convex surface 6 is formed on the other side.
4 is formed, and a tapered portion 53 narrowed rearward at the rear of the head 51a of the bolt 51 for fixing the tool tip mounting body 19 is formed.
The tapered portion 53 is formed on the tool tip attachment body 19 so as to contact an inclined surface 68 facing the wire processing space 5 inclined downward from the front to the rear for a spring manufacturing apparatus. Tooltip holder.