AU707625B2 - A channeling machine - Google Patents

Description

A CHANNELING MACHINE BACKGROUND OF THE INVENTION The present invention relates to a channeling machine for excavating an annular channel by a certain depth on a tube clamped by a chuck and cut off. A crank is disposed on outer side of a support body. A gear and a pinion are disposed in the .crank and engaged with each 10 other for rotarily driving a movable board having an excavator. A fixed stopper board and rotary shaft are I. disposed on outer side of the movable board for fixing a chuck which can be diverged to clamp the tube to be processed.

A conventional tube channeling machine includes a claw member for clamping the tube. The tube is rotated and an excavating blade is positioned on outer side of the tube for cutting an annular channel around the tube.

According to such arrangement, the tube is often unstably and eccentrically retained so that the blade can hardly evenly excavate the tube and the depth of the channel is often irregular. In the case that the tube has a thin thickness, the tube may be broken into a waste article. Moreover, with respect to different dimensions of tubes, the depth of the channel cannot be accurately controlled and an operator needs to measure -2the depth when excavating the tube. Therefore, it is quite time-consuming and laborious to process the tube and mass-production becomes impossible. As a result, the manufacturing cost is increased.

Therefore, it is necessary to provide a channeling machine which is able to automatically accurately channel the tube to solve the above problem.

S 1 0 SUMMARY OF THE INVENTION It is therefore a primary object of the present invention to provide a channeling machine which can stably retain the tube and perform channeling and cutting operation in a fast, convenient and accurate manner.

It is a further object of the present invention to provide the above channeling machine which has simple structure and can be easily operated with time and labor saved. Also, the channeling machine makes massproduction possible so as to reduce the cost.

According to the above objects, the channeling machine of the present invention includes a support body and a crank disposed on outer side of the support body.

A gear and a pinion are disposed in the crank and engaged with each other for rotarily driving a movable board having an excavator. A fixed stopper board and rotary shaft are disposed on outer side of the movable board for fixing a chuck which can be diverged to clamp the tube to be processed. By means of rotating the crank, the excavator quickly automatically excavates an annular channel around the tube and cuts off and retracts.

The present invention can be best understood through the following description and accompanying .:.drawing, wherein: BRIEF DESCRIPTION OF THE DRAWINGS .Fig. 1 is a perspective exploded view of the present invention; Fig. 2 is a sectional assembled view of the present invention; Fig. 3 is a perspective assembled view of the present invention; Fig. 4 is a view according to Fig. 3, showing the other side of the present invention; Fig. 5 shows the operation of fitting the tube in one state; Fig. 6 shows the operation of fitting the tube in another state; and -4- Fig. 7 is a sectional view showing the channeling operation of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Please refer to Figs. 1 and 2. The present invention includes a support body 1, a crank 18, a pinion 135, a gear 22, a movable board 27, a rotary shaft 28, a chuck 3 and an excavator 4. The support body 1 is disposed with a central hole 11 and a stopper pin

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1 1 1 under the central hole 11. Through holes 12 are disposed beside the central hole 11. In addition, small through holes 131 for fixing a shaft seat 133 and a through hole 13 for the pinion 135 to pass therethrough are formed above the central hole 11. A through hole is formed on upper portion of the support body 1 for fixing a locating tube 151. The locating tube 151 has an inner stepped portion for abutting against a compression spring 157. The locating tube 151 is further formed with a shallow recess 152 and a deep insertion groove 153 degrees spaced from each other. After the compression spring 157 is placed into the locating tube 151, a Tshaped stopper pin 154 is upward extended into the locating tube. The stopper pin 154 is disposed with an insertion pin 155 for inserting into the recess 152 and the insertion groove 153 of the locating tube 151. A through hole 156 is further formed thereabove for a pull pin 158 to insert thereinto. Screws 132 are passed through the through hole 13 and small through holes 131 of the support body 1 and screwed into thread holes 134 of the T-shaped shaft seat 133 so as to mount the shaft seat 133 on the support body 1. The pinion 135 has a shaft portion 136 formed with a through hole 137. The shaft portion 136 of the pinion 135 is passed through the shaft seat 133 and a sleeve 181 of the crank 18. A pin member is passed through the through hole 182 of the sleeve 181 and the through hole 137 of the shaft portion 136 of the pinion 135. A T-shaped rotary sleeve 193 is disposed on outer side of the central hole 11 of the support body 1. The rotary sleeve 193 is formed with inner thread 194. Screws 19 are passed through through holes 192 beside central hole of a U-shaped cap member S* 191 and through holes 113 of a fixing block 112 disposed at the center of the support body 1 and having stopper pin 114. A U-shaped thread rod 2 is screwed into the inner thread 194 of the rotary sleeve 193 and the stopper pins 111, 114 of the support body 1 and the fixing block 112 cooperate with the insertion groove 21 of the thread rod 2 to rotate the rotary sleeve 193 and linearly move the same. The notch 14 on left side of the support body 1 is for easy disassembly of the excavator 4. On a through hole 17 on the right lower side is disposed an L-shaped shaft support 171 formed with threads 172, 173 at two ends for tightening nuts 174, -6- 175 and 177 so as to fix the shaft support 171 on the support body 1. Also, for the operation of the excavator 4, a movable roller sleeve 176 is disposed on the shaft support 171.

The other ends of the screws 19 are screwed with the thread holes 284 in front of the rotary shaft 28 disposed with inner conic hole 281. A large gear 22 is i disposed on the rotary shaft 28 in sequence. A through 10 hole 23 is disposed beside the large gear 22 for the bolt 24 to pass therethrough. The large gear 22 meshes with the pinion 135 above the support body 1. The central hole thereof is disposed with a shaft sleeve 26.

A U-shaped elongated movable board 27 is disposed in front of the shaft sleeve 26. The bolt 24 is used to screw with the thread hole 270 beside the through hole 271 of the movable board 27. The movable board 27 has a notch and a transverse stopper pin 273 thereunder for S" easy assembly of the excavator 4. The thread holes 272 above and below the U-shaped notch are for screws 562, 572 to pass therethrough and through the through holes 561, 571 to fix the elongated channel board 56 and Lshaped channel board 57, whereby a slide channel is formed on the movable board 27 for the U-shaped fixing support 5 to place thereinto. The through hole 51 on one side of the fixing support 5 is for screw 52 to pass therethrough to screw with the thread hole 272 near the U-shaped notch of the movable board 27 so as to microadjust the same vertically. The screw 576 on upper side of the L-shaped channel board 57 is for the hollow microadjustment rod 573 and cooperative pad member 574 and another screw 576, pad member 575 to screw therewith for microadjusting the excavator 4. The fixing support is disposed with a window on one side and the upper thread hole 54 is for a locating bolt 541 to screw therewith so as to fix the fixing support on the 10 insertion recess 45 of the excavator 4 for adjustment of depth. The upper L-shaped elongated channel 55 is for *a the fixing bolt 41 passing through the slot 43 of the excavator 4 to pass therethrough so that the inner movable block 46 can be shifted within the reserved space. The fixing bolt 41 is for fastening the inner blade 42. An abutting projection 461 is disposed on rear side of the movable block 46 for operation of a cam 47 having rear abutting block 48 and gear disk 49 so that the blade 42 can reciprocally move forward and automatically restore via the abutting block 48 and the roller sleeve 116.

The thread hole 282 disposed beside the front conic hole 281 of the rotary shaft 28 is for a screw 292 to pass therethrough so as to secure the stopper board 29 with through hole 291 on outer side of the movable board 27. Therefore, the stopper board 29, rotary shaft 28 and -8fixing block 112 are fixed and not rotatable, while the movable board 27, large gear 22 and the pinion 135 will rotate. In order to insert a chuck 3 on the rotary shaft 28, a pin hole 283 is formed thereon and a locating pin 285 is locked therein. The chuck 3 is disposed with a front conic diverging tube 30 and a central support plate 34 serially connected with a spring 35 and a rear insertion pin 31 extending behind the locating seat 32 for inserting into the insertion groove 21 of the U- 0 shaped thread rod 2 so as to pull the conic diverging tube 30 and make the support plate 34 stretch open or contract to clamp the tube 6 not shown The conic body disposed on rear side of the locating seat 32 is disposed with an L-shaped locating channel 33 for locating the locating pin 285 of the rotary shaft 28. In order to move the conic diverging tube 30 on the locating seat 32, a recess 301 is formed thereon for [:cooperating with the pin member 321 of the locating seat 32.

Please refer to Figs. 3 and 4. A locating tube 151 is disposed under the U-shaped handle 16 on upper side of the support body 1 and a stopper pin 154 is disposed at the center thereof. A pull pin 158 and an insertion pin 155 are disposed on upper side of the stopper pin for easy pulling of the stopper pin 154 and easy insertion of the insertion pin 155 into the shallow -9recess 152 and insertion groove 153 of the locating tube 151. The lower side of the stopper pin 154 abuts against the pinion 135 disposed on the shaft seat 133. The large gear 22 is engaged with the pinion 135 and the movable board 27 is disposed in front of the large gear 22. The U-shaped fixing support 5 is secured on one side of the movable board 27 by the channel board 56 and the Lshaped channel board 57 not shown The fixing support is further secured by screws 52. The excavator 4 10 is disposed therein and fixed by the locating bolt 541 screwed in the thread hole 54. Through the window 53, the displacement numerals of the excavator 4 such as 1, 2, 3, 4, 5, 6 can be seen not shown The bigger the numeral is, the smaller the diameter of the tube is and

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more inward the excavator 4 is shifted. The fixing bolt S 41 exposed on the fixing support 5 is for fastening the blade 42 not shown in the excavator 4. The stopper board 29 with the through hole 291 not shown on outer side of the movable board is disposed with an inner chuck 3. The crank 18 is for rotating the pinion 135. The T-shaped rotary sleeve 193 having handle 195 is disposed at the center thereof for the U-shaped screw 2 not shown to shift therewithin so as to pull the conic diverging tube 30 back and forth. The T-shaped rotary sleeve 193 is fitted with the U-shaped cap member 191 so that when the rotary sleeve 193 is rotated, the U-shaped thread rod 2 is moved back and forth along therewith.

Please refer to Fig. 5. The tube 6 is fitted on the.

chuck 3 and the handle 195 is rotated as shown in Fig.

2. At this time, the U-shaped thread rod 2 therein immediately laterally pulls the conic diverging tube of the chuck 3 so that the support plate 34 thereon immediately stretches outward to fix the tube 6 as shown in Fig. 7. At this time, the crank 18 is rotated to 10 drive the pinion 135 which in turn rotarily drives the large gear 22 and the movable board 27 disposed with the excavator 4. The abutting block 48 of the excavator 4 touches the roller sleeve 176 not shown disposed on the shaft support 171 not shown so that the gear disk 49 is rotated by one tooth and advanced by a certain distance each time the blade 42 is rotated by one circle until the rear abutting projection 461 of the movable block 46 with preset depth falls from the highest point of the cam 47 to the lowest point. At this time, the blade 42 is restored and retracted. Meanwhile, the long and short blades 42 simultaneously excavate an annular channel 61 on the tube 6 clamped by the chuck 3 and cut off. In order to adjust the depth of the annular channel 61 and the dimension of the tube 6, this can be achieved by means of the microadjustment rod 573 not shown of the fixing support 5 and the locating bolt 541 not shown on the fixing support 5 and the -11insertion recess 45 not shown of the excavator 4.

Then the T-shaped rotary sleeve 193 is loosened so as to take out the tube 6. A chuck 3 with different size can be fitted with the rotary shaft 28 to suit a tube 6 with different dimension. The stopper pin 154 is lowered down to abut against the pinion 135 for easy carriage and replacement of the excavator 4 and avoiding rotation of the movable board 27.

1 0 It is to be understood that the above description and drawings are only used for illustrating one embodiment of the present invention, not intended to limit the scope thereof. Any variation and derivation from the above description and drawings should be included in the scope of the present invention.

f p a *a* -12- The claims defining the invention are as follows: 1. A channeling machine comprising a support body, a crank, a pinion, a gear, a movable board, a rotary shaft, a chuck and an excavator, the support body being formed with a central hole having a stopper pin, a Tshaped rotary sleeve having a handle being fitted with a U-shaped cap member and disposed on outer side of the central hole, a fixing block having a stopper pin being 10 disposed on inner side of the central hole, a U-shaped thread rod having an insertion groove being screwed on inner thread of the rotary sleeve, a rotary shaft having a locating pin being disposed in front of the fixing block, a shaft sleeve and a large gear being disposed around the rotary shaft, the large gear being secured the movable board disposed with the excavator, a fixing stopper board formed with central through being disposed around the rotary shaft having a conic hole, the pinion being engaged with the large gear and disposed in a shaft seat on upper side of the support body, the rotatable crank being disposed with a sleeve and disposed on a shaft portion of the pinion, a stopper pin being disposed in the through hole of the support body above the pinion for engaging with the pinion, a spring being disposed in a stepped locating tube formed with a shallow recess and an insertion groove, the stopper pin being disposed in the locating tube, the