JPS58202712A - Grooving device to peripheral surface of pipe body - Google Patents

Abstract

PURPOSE:To high accurately form a groove in desired depth to the peripheral surface of a pipe body, by inserting a center roller into the pipe body and providing slit rollers corresponding to the center roller to the outside of the pipe body. CONSTITUTION:A center roller 1 supported by a bearing to the side of a frame main unit and a pair of slit rollers 10 supported by a bearing to a branch side are reversely moved while approximated to and separated from internal and external surfaces 25, 27 of a pipe body A simultaneously by rotating a screw lever 19. Protrusive blades 15, 15', 15'' for forming a groove are provided to the roller 10 while recessed parts 6, 6', 6'' corresponding to these blades are formed to the roller 1. The both rollers are forcibly contacted, and the groove is formed to the peripheral surface 27 of the pipe body A.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for cutting grooves on the outer surface of a tube, and more particularly to a device for cutting grooves on the outer surface of a tube.

The applicant has developed a tool for forming grooves on the outer circumferential surface of a pipe body, and has filed an application for IJ model registration (application 1717534+ of 1982) dated November 17, 1981. be.

However, when the B11 cutting tool was used to cut grooves on the outer circumferential surface of the tube, the following problem occurred.

(a) When grooving, it was not possible to obtain a groove of the desired depth, resulting in a very shallow groove, which was required to form a stone-deep groove on the outer peripheral surface of the tube.

(b) On the other hand, when the grooving roller of the grooving tool is brought into strong contact with the outer surface of the tube in order to form a groove of the desired depth, the tube body is deformed and distorted, causing a serious problem. .

As a result, the pressing force of the grooving roller against the external surface of the tube cannot be made very strong, resulting in the contradictory problem of not being able to form grooves of the desired depth on the outer circumferential surface of the tube.

As described above, various problems have occurred when forming a desired groove on the outer circumferential surface of a tube body using the groove cutting tool according to the above-mentioned utility model.

In order to solve this problem, it is possible to insert a filler into the tube body when cutting the groove, but since a built-up part is created on the inner peripheral surface of the tube body when cutting the groove, this will dig into the 4S#J. As a result, a new VC problem occurred in which the filling could not be pulled out.

The present invention aims to solve the above-mentioned problems by forming a groove of a desired depth on the outer circumferential surface of a tube body with high precision and extremely easily, and without the risk of deformation of the tube body. Another object of the present invention is to provide a device for cutting grooves on the outer circumferential surface of a tube body, which can easily pull out a core as an insert from the tube body after cutting the grooves.

Another object of the present invention is to provide a grooving device that can perform grooving work by hand-touch operation.

That is, the present invention relates to a completely new and useful grooving device which is a further improvement of the grooving tool of the above-mentioned utility model. A branch on which a slit roller having the ability to cut grooves is pivotally supported is provided on the outer surface of the tubular body into which the center roller is inserted, and the branch is eccentric from the center of the center roller t-w body and pulled in one direction within the tubular body. At the same time, the actual force of the slit roller is
It has a structure in which the inner and outer surfaces of the tube are sandwiched between a center roller and a slit roller.

As described above, the inner and outer surfaces of the tube are pressed into grooves by tl'm, which is formed by pressing the inner and outer surfaces of the tube by the center roller as a core pushed into the tube and the slit roller provided outside the tube corresponding to the roller. Because it is a groove cutting device that performs cutting, it has the following special practical effects.

(a) When cutting grooves, a center roller is installed as a core inside the tubular body, so the slit roller for groove cutting can be pressurized to cut grooves, and the desired depth of 4g can be shortened. Can be formed with high precision in a short amount of time.

(b) Even if strong pressure is applied, the tube body will only deform within its elastic limit, so when the strong pressure of the slit roller is released, the tube body will be restored by the elastic force and deform as before.
There is no distortion, etc., and the product remains in its original condition.

(C) Even if a line occurs on the inner diameter of the tube, the outer diameter of the center roller is smaller than the inner diameter of the tube, and when cutting a large groove, the core center roller is eccentric from the center of the tube, making it offset -C. With 17, the roller can be used within a certain inner diameter range.

Moreover, when pulling out the roller from the tube body after cutting the groove, the center roller can be easily pulled out due to the difference between the inside and outside.

(d) It is possible to cut grooves in tubes with various inner diameters by simply replacing the center roller, resulting in extremely high versatility.

As described above (in accordance with the present invention, when cutting grooves on the outer circumferential surface of a tube body, the center roller inserted in advance into the tube body and the slit roller provided outside the tube body facing the roller can be cut into the tube body with one touch). The inner and outer sides of the pipe are crimped close together, the inner and outer parts of the pipe are sandwiched between the rollers, and the grooves are cut on the outer circumferential surface of the pipe. All of the previous points have now been improved.

Embodiments of the present invention will be described below according to an example shown in the drawings.

FIG. 1 shows a longitudinal sectional view of the groove cutting device, and the second figure shows a side view of the same. 11) in the figure is a roughly rectangular frame body (2)
The spindle (3) and spin V nut f4 are located approximately in the center of the
A center roller serving as a core is pivotally supported by 1, and on the outer peripheral surface of the roller, the number of grooves (3 in the example) formed on the outer surface of the tube tL coincides with the grooves formed. A recess f61 having a substantially trapezoidal cross section corresponding to the position flK
, 16Y, and 16Y' are formed in three annular strips. In addition, the three recesses fil, +6+', +61"
Corresponding to the depth of the groove formed in one of the grooves (61 grooves), the depth of the other two grooves (button, tel' will be shallower). (7) Ha center roller +11 A flange for locking the tube body formed on the edge of one side of the frame main body f2+, (8)・#″i center roller (1)
A chamfered portion formed on the outer peripheral edge of the other side is shown.

Next, the outer diameter of the center roller (1) is twice the minimum inner diameter l of the tube A to be pushed, minus the outer diameter by X.

Therefore, when cutting the outer circumferential surface of tube A, - is
The cross-sectional protrusion dimension of the built-up part (also shown is the cross-sectional protrusion dimension) that bulges out on the inner circumferential surface of the

Therefore, for example - 60s with stainless steel pipe for installation f#
In case u), the dimensions of tube A are as follows.

The minimum inner diameter is 56.95.

Outer diameter = ao, 5, maximum outer diameter 60, 75. Minimum outer diameter 60.26 inner diameter = 57.5. Maximum inner diameter 58.05, minimum inner diameter 56.95 wall thickness -1.5, maximum wall thickness 1.6ζ Therefore, in the case of the pipe body 601u, the built-up part (
Assuming the dimensions of the octopus are 0.3, the outer diameter L of the center roller (1) = the minimum inner diameter of 56.95-2
, 3) = 56.35 or less. In this example, Fi5
6. There is a CRC.

In this way, the outer diameter LH of the center roller fi+ is set to be equal to or less than the minimum inner diameter l of the tubular body A minus twice X. That is, the outer diameter of the center roller (1) is set to be smaller than the minimum color of the tube and smaller than the dimension between the built-up portions bulging on the inner peripheral surface of the tube.

Furthermore, the dimensions of stainless steel pipes for general piping other than 605uJ2J are as follows.

Urn 4o1u Outer diameter 42.7, maximum outer diameter 42.9%, minimum outer diameter 42.5, inner diameter 40.3, maximum inner diameter 40.7ζminimum inner diameter 39.86, wall thickness 1,2, maximum wall thickness 1.32, minimum Wall thickness 1.08 Qin 50$u Outer diameter 48.6, maximum outer diameter 4B, 85, minimum outer diameter 48.3
5 inner diameter 46.2, maximum inner diameter 46,69, minimum inner diameter 45.
71 wall thickness 1.2, huge wall thickness 1,32. jth small wall thickness 1.08 As shown above, there is a dimensional error in the inner diameter of each tube depending on the tube size, so the outer diameter of the center opening and -ra is set based on the minimum inner diameter. .

Next, two slit rollers are placed on the outside of the center roller 11) facing each other, αα' is the plan f (Il
1. K pin tE) K pin is rotatably supported. The branch (11) is a part of the bottle H (one end of which is screwed into the long hole O- drilled in the longitudinal direction of the frame body (2)) (141 is a steady rest locking support). The frame body (2) can be slid on the frame body (2).

051. (Illlf, (I6)' 1t (Ie slit roller, -' outer surface and protruding groove cutting blade corresponding to each recess 161 m +61', +6 bi of the center roller Ill. show.

0 (2) is a screw hole drilled in the operation part 071 of the frame body (2), O□□□Vi is a hole formed on the branch 1111 side communicating with the screw hole a, 0- is the operation part 071 Part (lη
The screw rod is screwed into the hole +1 on the branch (11) side from the screw hole o6 of the branch (11) side, and a thick incised large part ridge is formed at the tip K1-1. Numeral υ is a locking screw which is screwed into the screw hole of the branch flli and whose tip portion protrudes inside the notch, and 12ai is a rotating screw attached to one end of the screw screw shown in ll'l. Handle, C241um The thruster inserted between the tip of the threaded rod and the hole tt81 in the branch leaf is shown.

Next, an example of the use of the groove cutting device h having the above structure will be explained.

First, as shown in Figure 1, the minimum inner diameter (5
6,95) / jsu2〆(0,Qb)ii A center roller (1) consisting of an outer diameter (56,0)L,
Push into the fixed tube A until the flange (7) is locked to the periphery of the tip of the tube A.

In this state, the center of the tubular body A and the center of the center roller 11) are aligned, so that there are 0.4 and 5. Gap (to)
There is.

On the other hand, the slit roller ram ot, ftoP#-i facing the center roller (1) leaves a gap (c) between it and the outer circumferential surface of the tube body A, as shown in Figures 1 and 2. The slit rollers 1101 are provided facing the inside and outside of the tube body A, and the slit rollers 1101,
The three recesses f61 and +61' of the center roller ftl correspond to the heights 96F and 96F.

(The potential of 6Y' is determined.

Next, in order to form three grooves on the outer circumferential surface of tube A in this state, tube A is rotated by driving a rotary drive unit (not shown) that fixes tube A. When the screw handle (c) is rotated clockwise, the screw rod rotates in the same direction, and at the same time, the screw hole Qtm moves the frame body 1 from the state shown in Fig. 1 to the state shown in Fig. 3 [arrow (l)]. The frame body (2) is moved downward in the direction (2).
) is also moved in the same direction, that is, the center of the roller (1) is shifted from the center of the tube A, and the center roller 111 is eccentrically moved toward the inner peripheral surface side of one side of the tube A. It will be done.

Moreover, the frame body (2) moves downward due to the rotation of the original screw rod α (to), but the screw rod is at branch +111.
The slit rollers 10j and t101' also move in the same direction to push the 7-lunch (11) toward the outer circumferential surface of the tube body A and move it in the direction of the arrow (b). .

(151, 06 moves close to the decoration (first surface 127 of the outer cylinder of the tube body A), and the cutting edge i, (151, 06) comes into contact with the outer circumferential surface of the tube body A as shown in the same figure.

When the handle is further rotated from this state, the slit roller 110 is attached to the outer surface of the tube body A as shown in Fig. 4.
), 110)' ability (151, (161', Q
As 5- begins to bite into the center roller f
l) Inner surface 12 of tube body A! As shown in the same figure, the center roller (1) is placed on the inner surface (C) of tube A on one side from the center of tube A, and the center roller (1) is eccentrically eccentric from the center of tube A.
The outer surface c2'7) of the tube body A has the respective actual forces (+6) 1061'l (15
1. Arrogant: One side of the biting tube body A has both rollers Isl,
It is sandwiched between lots. Moreover, at this time tube body A
is rotating, the rotation and tightening of the handle (to) can only be done by operating the three grooves on the outer circumferential surface of tube body A.
, can be easily formed.

The ability of these three articles α61, (161', (+51")
The outer circumferential surface c2 of tube body A? ), if you cut the groove,
Due to the actual pressing force, built-up parts (to), (
To) 'Changσ' swells, but each build-up part (to) a A'a
CIJ/' has an escape recess (button, +61', +6) on the outer Fi11 surface of the center roller (1) as a core.
are formed respectively, so these recesses f61 and +6
)', +111" and is prevented from protruding any further, resulting in the state shown in Figure 1. Therefore, deformation and distortion of the tube body A due to the actual force Q6), α6f * Ob+' when cutting grooves is prevented. Therefore, a groove portion with a predetermined depth can be formed at a predetermined position on the outer peripheral surface of the tube body A.

In this way, according to this embodiment, the prisoner [f
On the i (to) side, a center roller (11) is pressed against the center roller (11) as a core which is offset and eccentric from the center of the transport body A, and the tube body A
The outer peripheral surface (K) is a slit roller + LO1, 110
1''s ability is used, both rollers ill, 1
101 while sandwiching the tube A between the above actual forces (16+ j
+15”s Ob* bites into the outer periphery of the tube body A and the body outer circumferential surface 61 of the slit roller Uα, lttm'
) is in contact with the outer circumferential surface of tube A, and the threaded rod te91
After stopping the rotation of the tube body A and cutting the groove to the desired depth, turn the handle counterclockwise tr in the opposite direction to -1■. Since the frame main body 11i rotates in the same direction, the frame main body 11i moves upward in the direction of the arrow (b), and at the same time the center roller tl+ also moves in the same direction (1) and separates from the inner peripheral surface (c) of the tube body A. At the same time as the center of the L-shaped base, on the other hand, the threaded rod U (to)
By the downward rotation in the direction of arrow (A), the branch (11) is also integrally lowered in the same direction via the locking pin system, and the respective actual forces α61, 1101' of the slit rollers 1tol, 1101',
θ61', Q51'' separate from the outer surface of tube A,
The state shown in FIG. 5 is reached.

After that, when the rotation of tube A is stopped, three grooves -,@' are formed on the outer surface of typeface A, as shown in FIG.

12v' is accurately formed at a predetermined depth, and the tube body itself has a center roller that acts as a core during groove cutting, so a high-precision finish is achieved without any distortion or deformation. I got it.

After finishing the groove cutting work on tube A in this way, I had to pull out the center roller (凰) inserted into tube A, or put it flush with the inner circumferential surface of tube A. The protrusion degree of the bulged build-up part (to) is - 003, while the gap between the outer diameter of the center roller (1) and the inner diameter l of the tube body A is Q, 4' f5, so the center roller ill can be easily pulled out from inside the pipe body A because there is a gap between the meat I & part (to) and the dark Kij O14'75-0, 3 engineering 0,175. be.

As a result of the operation of the above-mentioned groove cutting device, three grooves -, c4', and e#' can be formed on the surface of the tube body A as shown in FIG.

In this embodiment, in order to form three grooves on the surface of the tube, the four grooves of the three grooves are formed on the center roller, and the slit roller [formed with the actual strength of the three grooves, respectively, or This is by no means a limitation; the number of grooves and the strength of the recesses are determined by the number of grooves. Also, the depth of the groove can be freely changed depending on the depth. 6% again
In the example, if the outer diameter of the center roller is 60su, the minimum inner diameter of 56,9b is 56.0, or the degree of protrusion of the built-up part is (0,3)X2:0
．． It may be 56.35 by subtracting 6, and J# is 56.
．． It is sufficient if it is 35 or less. Further, in the case of a tube of 50 ha U2, the outer diameter of the center roller was set to 38.9 in the case of a tube of 44.7.4 o11 u.

Even if there is a deviation of h, the outer diameter of the center roller is set based on the minimum inner diameter of the tubular body, so there is an advantage that the roller can be used as is even if an error occurs in the inner diameter of the tubular body.

Next, in the above embodiment, the center roller (1) pivotally supported on the frame body side and the slit rollers tto+ and tio1' pivotally supported on the branch side are simultaneously reversely moved by the rotation of the screw rod to complete the pipe. It is used to move towards and away from the internal and external surfaces of the body, but the means for doing so is by no means limited to female threaded rods; for example, cylinder ronds may be used instead of threaded rods. It is not something that will be done. In short, any means is sufficient as long as the center roller ill and the slit roller move together toward and away from the inner and outer surfaces of the tubular body with a one-touch operation.

In the above embodiment, the groove is cut while rotating the positioned tube A, but the center roller + 1) is cut with a soft trace made by fixing the tube without rotating it.
It is also possible to cut grooves while rotating the frame body on the tube held between the toslit rollers, and it does not matter whether the tube is rotated or not.

In addition, although two slit rollers are provided in the embodiment, the number of slit rollers is not necessarily limited.

Furthermore, by replacing the center roller with a center roller having a different outer diameter, there is the advantage that it can be used for cutting grooves on tubular bodies of various scorches.

As described above, according to the present invention, the work of grooving the tube body is extremely simple compared to the conventional method, and since the center roller is inserted into the tube body during grooving, it is possible to achieve high precision Vζ and a large g It is now possible to cut grooves in the tube body without causing any damage.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view of the groove cutting device. Figure 2 is a side view of the same. Figure 3 shows the first stage in autumn and spring when the grooving force was in contact with the outer surface of the pipe body.
A sectional view of the main part of the figure. FIG. 4(A) is a sectional view of the same essential part during groove cutting. FIG. 4(B) is a schematic sectional view from the side direction. FIG. 5 is a cross-sectional view of the same essential parts in a state where each roller is separated from the tubular body after groove cutting. Figure 6 is a cross-sectional view of the structure after groove cutting. A...Pipe body (1)...Center roller (2)...Frame body +101, -'...Slit roller cover...Inner surface...Outer surface Applicant
Isuzu Kogyo Co., Ltd. Agent Patent Attorney Noboru Fuji 1I4I! l (b) 151m 61II Voluntary procedure Sodeichisho Showa at;+-IQ Deaf II J H fl + Director General Wakasugi Wainu l ・11 results Showa! S'F + Patent Application No. ASAAO Sum 3
Relationship with the case of the person making the amendment: Applicant 4, agent 0. ,. 8 Contents of the amendment attached) 8. Self-answer of the amendment fll The title of the invention in the application and specification is amended to ``device for grooving the outer circumferential surface of a tube body'' to ``device for grooving the outer circumferential surface of a tube body.'' (2) Amend the lees of the special plan as shown in the attached sheet. (3) Corrected "grooving device" in negative lines 17 and 19 of the first specification to "grooving ye girl". (4) Line 11, line 6, line 1O, 1 of the specification
"Grooving" in the 3rd, 17th, and 20th lines has been corrected to "grooving 71J." (6) In the first negative line 17 of the specification, "tube &CJ" has been changed to "tube. Particularly thick. "Thin synthetic resin pipe body" was corrected. (6) Page 3 of the specification, lines 1, 8, and 11,
Correct "a cut" in the first line to "rlI insert". (7) "Grooving device" in page 3, line 1O, @line 12, top 1 of the specification was corrected to "grooving device." (8) Page 4 of the specification, lines 8, 11, 12, etc.
-・□ Corrected "grooving" in the 13th line to "grooving". (9) On page 4, line 9 of the specification, "grooving device" has been amended to "grooving device". (lLll Specification @ page 11, line 12, “tat1 groove” has been corrected to “save, groove even if it is a thin-walled tube”. 6th line, wS 10th line %@lla line, @17th to 18th line "Grooving" is corrected to "Grooving, 1." Q2: Specification page 6th line 3rd line "Grooving""Equipment" has been corrected to "grooving dragon". dj Specification l!F, page 7, line 1, "grooving" has been corrected to "grooving". ······blade"
was corrected to "Mizodaiyo's ability". 961 Specification @ Page 99, page 14, "grooving device" is corrected to "grooving 1vItJ." Specification, page 10, line 9, "grooving" is corrected to "grooving." gy, page 11, line 11 of the specification “Clam 4 diagram...”
``Pipe body'' was corrected to ``A tube body that rotates as shown in Figure 4.'' gm In the specification, page 11, lines 12 to 13, "at the beginning" was corrected to "as soon as the grooving work begins." Q9) Negative line 19 to line 20 of No. 11 in the specification, "Handle is clamped" is changed to "Handle is clamped and grooved. Therefore, the rotation of tube body A and the handle." And supplement. Corrected "Dove cut" in line 5 and line 12 of Shell 12 of the specification to "groove". Vll In the 2nd line of No. 13 of the specification, ``pickpocketing'' was supplemented with ``pickpocketing while biting.'' □□□Details Soakan 13th shell ↓ line to 5th line ``τ^ cut・
After that, change the above to 17 to form a groove with the desired depth. After that, change to 11.
and correction. Yes: On page 13, line 19 of the specification, “grooving” is changed to “grooving”.
"Re," he corrected. 41F3A Specification, page 11, line 20, “I can do it again.”
It should be noted that since the above example uses a thin-walled synthetic resin tube, a recess for the built-up part is formed on the center roller side, but in the case of a thick-walled tube, there is no relief. The recess is no longer necessary.'' bl uA Specification, page 14, line 2, ``Groove cut'' has been corrected to ``Add 1 groove''. Therefore, on page 14, line 11 of the specification, ``groove cutting'' was changed to [grooving 3
kJ and correction. Part 7: Specification No. 16, line 8, line 14, line 1
Set "Cut" on the 5th, 16th, and 19th lines to "Input,"
” he added. Corrected the first line of page 17 of Shiro Yosaso to read [116 captivating devices are used for grooving]. -Li J Specification, page 17, lines 3, 5, and 7, @
Correct “grooving” in line 9 to “grooving”. 2. Claims: A center roller inserted into the tube body is pivotally supported in the frame main body, and a slit roller having the ability to make grooves is pivotally supported on the outer surface of the tube body into which the center roller is inserted. A branch is provided, and when the center roller is eccentrically moved from the center of the bone rest and pulled in one direction within the tube Ic, at the same time, the protrusion of the slit roller q21# and the outer surface ν of the body
At I, the outer surface of the tube body is pinched f! 1. Grooved mounting d0 on the outer surface of the tube body, characterized by

Claims (1)

[Claims] A center roller to be inserted into the tube body is pivotally supported in the frame body, and a branch is provided on the outer surface of the tube body into which the center roller is pushed, and a branch having a slit roller having grooving ability is pivotally supported, and the center roller When the slit roller is pulled eccentrically from the center of the tube in one direction inside the tube, the force of the slit roller simultaneously bites into the outer surface of the tube, causing the center roller and slit roller to pinch the inner and outer surfaces of the tube. A grooving device for the external surface of a tube, which is characterized by the following: