CN215786851U - Boring device of taper hole machine barrel - Google Patents

Abstract

A boring device of a tapered hole machine barrel comprises a boring cutter bar (1) provided with a boring cutter (11), a driving device (3) capable of driving the boring cutter bar (1) extending into a tapered hole (51) of the machine barrel (5) to rotate and a positioning device (4) capable of fixing the tapered hole machine barrel (5), wherein the boring cutter bar (1) is a conical cutter bar, the taper of the boring cutter bar (1) is matched with the taper of the tapered hole (51) of the machine barrel (5), the boring cutter (11) can be arranged in a dovetail groove (12) in a back-and-forth sliding mode, and a transmission device (2) capable of driving the boring cutter (11) to slide back and forth along the dovetail groove (12) is arranged on the boring cutter bar (1). The advantages are that: the workpiece is fixedly clamped, the cutter bar can rotate at a high speed, the rotating speed of the cutter bar can reach 200-800 rpm according to the requirement of the cutting linear speed, the cutting efficiency is high, and the method is suitable for batch processing of the taper holes with the small end holes larger than 50 mm; the boring machine can move and adjust the position of the machine barrel through the bracket and the servo motor, is more suitable for boring operation of the conical double machine barrels, and has good practicability.

Description

Boring device of taper hole machine barrel

Technical Field

The utility model relates to the technical field of machining, in particular to a boring device of a tapered hole machine barrel.

Background

The prior Chinese utility model with the application number of CN201620948178.3 named as boring machine discloses a structure, which comprises a guide shell, a locking sleeve, a boring cutter rest and a blade, wherein the guide shell is formed by connecting two sections of cylindrical cylinders, a bolt hole is longitudinally arranged at the joint of the two sections of cylindrical cylinders, and an operating handle is arranged in the bolt hole; the inner part of the left end of the guide shell is a tapered hole, an internal thread is arranged at the position close to the port of the inner part of the hole, the tapered hole is connected with a locking sleeve, and the outer side of the locking sleeve is tapered; a circular through hole is formed in the inner part of the right end of the guide shell and connected with the boring cutter rest, a guide groove is formed in the inner wall of the circular through hole, the boring cutter rest enters the guide shell along the guide groove, and positioning holes are formed in the guide shell and the corresponding positions of the upper part of the boring cutter rest; the center of the boring cutter rest is provided with a cutter rest shaft, the front end of the cutter rest is provided with a boring blade and a chamfering blade, and the rear end of the boring cutter rest is connected with a speed-adjustable electric hand drill. The utility model solves the problems that the stainless steel plastic composite pipe has large inner diameter tolerance, poor installation fit and can not be connected by using a unified pipe fitting, and has the advantages of high boring speed and convenient operation. However, the boring machine has a slow rotation speed and low production efficiency, and therefore the structure needs to be improved.

Disclosure of Invention

The technical problem to be solved by the utility model is to provide a boring device of a tapered hole machine barrel, which has high boring speed and high processing efficiency and is suitable for processing a single tapered hole machine barrel or a double tapered hole machine barrel with the same specification aiming at the current technical situation.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a bore hole device of bell mouth barrel, is including the bore hole cutter arbor that is provided with the boring cutter, can drive the bore hole cutter arbor pivoted drive arrangement who stretches into in the barrel bell mouth and can fix the positioner of bell mouth barrel, its characterized in that: the boring cutter bar is a conical cutter bar with one larger end diameter and the other smaller end diameter, the taper of the boring cutter bar is matched with the taper of the tapered hole of the machine barrel, a dovetail groove with an opening on the top surface and a wide bottom and a narrow top is axially formed in the conical surface of the boring cutter bar, the boring cutter can be arranged in the dovetail groove in a back-and-forth sliding mode, a transmission device capable of driving the boring cutter to slide back and forth along the dovetail groove is arranged on the boring cutter bar, and when the boring cutter conducts boring on the tapered hole of the machine barrel through the boring cutter bar, the boring cutter can rotate together with the boring cutter bar under the driving of the boring cutter bar and can move axially in the dovetail groove.

As an improvement, the transmission device comprises a transmission screw rod, the transmission screw rod is axially arranged on a central shaft of the boring cutter rod and can extend into a through hole in the boring cutter rod from one end of the boring cutter rod, the through hole extends to the other end of the boring cutter rod, a sliding groove communicated with the through hole is formed in the bottom surface of the dovetail groove downwards, the transmission screw rod can be rotatably arranged in the through hole, the boring cutter is linked with the transmission screw rod through a connecting piece, one end of the transmission screw rod is linked with an output shaft of a transmission motor, and when the transmission screw rod rotates, the transmission screw rod drives the boring cutter to move back and forth in the dovetail groove.

As a further improvement, the connecting piece comprises a connecting rod and a nut sleeve which is sleeved on the screw thread of the transmission screw rod and can axially move along the transmission screw rod when the transmission screw rod rotates, the connecting rod can move back and forth and is arranged in the sliding groove, the bottom end of the connecting rod is fixedly connected with the nut sleeve, the upper end of the connecting rod is fixedly connected with the boring cutter, and one end of the transmission screw rod extends out from the end with the larger diameter of the boring cutter rod and is linked with the output shaft of the transmission motor.

As an improvement, the driving device can move back and forth along one end surface of the cylinder of the tapered hole through a driver, the driving device comprises a driving part positioned at one end of the positioning device and a transmission part positioned at the other end of the positioning device, the driving part comprises a driving motor and a rolling part driven by the driving motor, the end with larger diameter of the boring cutter bar is fixed with the rolling part, the end part of a transmission screw rod extending from the end with larger diameter of the boring cutter bar can rotatably penetrate through an axial center hole of the rolling part and is linked with an output shaft of the driving motor, when the tapered hole machine barrel is bored, the tapered hole machine barrel is positioned on the positioning device, the end with the smaller diameter of the boring cutter rod penetrates into the tapered hole at the end with the larger diameter of the tapered hole machine barrel, and the tapered hole barrel extends out of the tapered hole at one end with the small diameter and is rotationally connected with the transmission part.

As a further improvement, the rolling part includes a rolling bearing and a rolling shaft, the axial center hole is located on the axis of the rolling shaft, the rolling shaft is rotatably fixed on a fixed seat in the driving part through the rolling bearing, one end of the rolling shaft is fixed with a flange fixed at the end with the larger diameter of the boring cutter bar through a flange, the other end of the rolling shaft is linked with an output shaft of the driving motor through a transmission gear or a transmission belt, a second rolling shaft capable of rotating relative to the rolling shaft is installed in the axial center hole, one end of the second rolling shaft is fixed with the end of the transmission screw rod extending from the end face of the boring cutter bar with the larger diameter, and the other end of the second rolling shaft extending out of the corresponding end face of the rolling shaft is linked with the output shaft of the driving motor through the transmission gear or the transmission belt.

As a further improvement, the transmission part comprises a transmission bearing and a transmission rolling shaft which can roll, the transmission rolling shaft is rotatably fixed on a transmission seat of the transmission part through the transmission bearing, and the transmission rolling shaft is fixedly connected with the end face with the smaller diameter of the boring cutter rod.

As a further improvement, a tensioning positioning rod is arranged in the axis of the transmission roller, a conical cavity is concavely arranged on one surface of the transmission roller opposite to the end surface of the boring cutter bar, a pyramid matched with the conical cavity in shape is fixed on the end surface with smaller diameter of the boring cutter bar, a fixing hole connected with one end of the tensioning positioning rod is concavely arranged on the outer end surface of the pyramid, when the end surface with smaller diameter of the boring cutter bar is connected with the transmission roller, the pyramid extends into the conical cavity, one end of the tensioning positioning rod extends into the fixing hole of the pyramid and is fixed together through a bolt, and the other end of the tensioning positioning rod extending out of the transmission roller is fixed together with the transmission roller through a fixing nut.

As an improvement, the positioning device comprises at least two movable supports which are arranged at intervals and can clamp and fix the tapered hole machine barrel and drive the tapered hole machine barrel to move back and forth, synchronous servo motors which can control the movable supports and the tapered hole machine barrel to move back and forth are respectively installed on the movable supports, and the synchronous servo motors are connected with the numerical control device through leads.

The driver is a hydraulic cylinder driver or a motor driver.

The tapered hole machine barrel is a tapered double machine barrel or a tapered hole machine barrel with a single hole.

Compared with the prior art, the utility model has the advantages that: the workpiece is fixedly clamped, the cutter bar can rotate at a high speed, the rotating speed of the cutter bar can reach 200-800 rpm according to the requirement of the cutting linear speed, the cutting efficiency is high, and the method is suitable for batch processing of the taper holes with the small end holes larger than 50 mm; the boring machine can move and adjust the position of the machine barrel through the bracket and the servo motor, is more suitable for boring operation of the conical double machine barrels, and has good practicability.

Drawings

FIG. 1 is a perspective view of an embodiment of the present invention;

FIG. 2 is a perspective view of another angle of the embodiment of FIG. 1;

FIG. 3 is a perspective view of the boring bar of FIG. 1 without the boring bar inserted into the barrel;

FIG. 4 is an exploded view of FIG. 3;

FIG. 5 is a top perspective view of FIG. 3;

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

FIG. 7 is an exploded view of the barrel and boring bar of FIG. 1 with the barrel and boring bar removed;

FIG. 8 is a perspective view of a boring bar in an embodiment of the present invention;

FIG. 9 is a front perspective view of FIG. 8;

FIG. 10 is a perspective view of the boring tool of the present invention;

FIG. 11 is an exploded view at another angle to FIG. 10;

FIG. 12 is a front perspective view of the barrel of the present invention;

FIG. 13 is a cross-sectional view taken along line A-A of FIG. 9;

FIG. 14 is a cross-sectional view taken along line C-C of FIG. 12;

FIG. 15 is an enlarged view of portion I of FIG. 6;

fig. 16 is an enlarged view of a portion ii in fig. 6.

Detailed Description

The utility model is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 to 16, the boring device of the tapered bore barrel of the present embodiment includes a boring cutter bar 1 provided with a boring cutter 11, a driving device 3 capable of driving the boring cutter bar 1 extending into a tapered bore 51 of the barrel 5 to rotate, and a positioning device 4 capable of fixing the tapered bore barrel 5, wherein the boring cutter bar 1 is a tapered cutter bar having a larger diameter at one end and a smaller diameter at the other end, the taper of the boring cutter bar 1 is adapted to the taper of the tapered bore 51 of the barrel 5, a wide-bottom and narrow-top tapered bore 12 having an open top is axially formed on the tapered surface of the boring cutter bar 1, the boring cutter 11 is slidably disposed in the dovetail groove 12 back and forth, a transmission device 2 capable of driving the boring cutter 11 to slide back and forth along the dovetail groove 12 is disposed on the boring cutter bar 1, and when the boring cutter 11 bores the tapered bore through the boring cutter bar 1, the boring cutter 11 is driven by the boring cutter bar 1 to rotate together with the boring cutter bar 1 and simultaneously to operate as a dovetail groove 12 Axially, the boring tool 11 of the present embodiment includes a tool bit 111 and a tool holder 112, the tool bit 111 is detachably fixed to the tool holder 112, and the tool holder 112 is detachably fixed to the connecting member 15.

The transmission device 2 comprises a transmission screw rod 21, a through hole 13 which enables the transmission screw rod 21 to extend into the boring cutter bar 1 from one end of the boring cutter bar 1 is axially arranged on a central shaft of the boring cutter bar 1, the through hole 13 extends to the other end of the boring cutter bar 1, a sliding groove communicated with the through hole 13 is formed in the bottom surface of the dovetail groove 12 downwards, the transmission screw rod 21 can be rotatably arranged in the through hole 13, the boring cutter 11 is linked with the transmission screw rod 21 through a connecting piece 15, one end of the transmission screw rod 21 is linked with an output shaft of a transmission motor, and when the transmission screw rod 21 rotates, the transmission screw rod 21 drives the boring cutter 11 to move back and forth in the dovetail groove 12. The connecting piece 15 comprises a connecting rod 151 and a nut sleeve 152 which is sleeved on the screw thread of the transmission screw rod 21 and can axially move along the transmission screw rod 21 when the transmission screw rod 21 rotates, the connecting rod 151 can move back and forth and is arranged in the sliding groove 14, the bottom end of the connecting rod 151 is fixedly connected with the nut sleeve 152, the upper end of the connecting rod 151 is fixedly connected with the boring cutter 11, and one end of the transmission screw rod 21 extends out from the end with the larger diameter of the boring cutter bar 1 and is linked with the output shaft of the transmission motor.

The driving device 3 can move back and forth along one end surface of the cylinder 5 relative to the tapered hole through a driver, the driving device 3 comprises a driving part 31 at one end of the positioning device 4 and a transmission part 32 at the other end of the positioning device 4, the driving part 31 includes a driving motor 311, a rolling part 312 driven by the driving motor 311, the larger end of the boring cutter bar 1 is fixed with the rolling part 312, the end part of the transmission screw 21 extending from the larger end of the boring cutter bar 1 can rotatably pass through the axial center hole of the rolling part 312 and is linked with the output shaft of the driving motor 311, when the tapered hole machine barrel 5 is bored, after the tapered hole machine barrel 5 is placed on the positioning device 4 for positioning, the smaller end of the boring cutter bar 1 penetrates into the tapered hole 51 at the larger diameter end of the tapered hole machine barrel 5, and the tapered bore barrel 5 is extended from the tapered bore 51 at the end with the small diameter to be rotatably connected with the transmission part 32. The rolling part 312 includes a rolling bearing 314 and a rolling shaft 315, the axial center hole is located on the axial center of the rolling shaft 315, the rolling shaft 315 is rotatably fixed to a fixing seat 316 in the driving part 31 via a rolling bearing 314, one end of the rolling shaft 315 is fixed to a flange fixed to the larger end of the boring bar 1 through a flange, the other end of the rolling shaft 315 is linked with the output shaft of the driving motor 311 through a gear or a belt, in said axial central hole is mounted a second roll shaft 317 which is rotatable with respect to the roll shaft 315, one end of the second rolling shaft 317 is fixed with the end of the transmission screw rod 21 extending from the end surface of the boring cutter bar 1 with the larger diameter, the other end of the second rolling shaft 317 extends out of the corresponding end surface of the rolling shaft 315 and is linked with the output shaft of the transmission motor through transmission teeth or a transmission belt. The transmission part 32 comprises a transmission bearing 321 and a transmission roller 322 which can roll, the transmission roller 322 can be rotationally fixed on a transmission seat 326 of the transmission part 32 through the transmission bearing 321, and the transmission roller 322 is fixedly connected with the end face, with the smaller diameter, of the boring cutter bar 1. The axial center of the transmission roller 322 is provided with a tensioning positioning rod 324, one surface of the transmission roller 322, which is opposite to the end surface of the boring cutter bar 1, is concavely provided with a conical cavity 325, a cone part 16 which is matched with the conical cavity 325 in shape is fixed on the end surface with smaller diameter of the boring cutter bar 1, the outer end surface of the cone part 16 is concavely provided with a fixing hole which is connected with one end of the tensioning positioning rod 324 in an extending manner, when the end surface with smaller diameter of the boring cutter bar 1 is connected with the transmission roller 322, the cone part 16 extends into the conical cavity 325, one end of the tensioning positioning rod 324 extends into the fixing hole of the cone part 16 and is mutually fixed together through a bolt, and the other end of the tensioning positioning rod 324, which extends out of the transmission roller 322, is fixed together with the transmission roller 322 through a fixing nut.

The positioning device 4 comprises at least two moving supports 41 which are arranged at intervals and can clamp the tapered hole machine barrel 5 and drive the tapered hole machine barrel 5 to move back and forth, synchronous servo motors 42 which can control the moving supports and the tapered hole machine barrel 5 to move back and forth are respectively installed on the moving supports 41, and the synchronous servo motors 42 are connected with a numerical control device through leads.

The driver is a hydraulic cylinder driver or a motor driver. The tapered hole machine barrel 5 is a tapered double machine barrel or a tapered hole machine barrel with a single hole.

When a conical double-hole machine barrel is machined, because a workpiece is heavy, high-speed eccentric rotation danger is high, and the requirement for counterweight is high, the boring of the traditional conical double-hole machine barrel is carried out at a cutting speed of below 60 rpm without rotating a cutter bar, so that a required included angle is formed between the central line of a rotating workpiece and the axial moving central line of a boring bar in order to obtain a conical hole meeting the requirement, and the production efficiency is low. The workpiece is fixedly clamped, the cutter bar can rotate at a high speed, the hard alloy blade is used, the rotating speed of the cutter bar can reach 200-800 rpm according to the requirement of the cutting linear speed, the cutting efficiency is high, and the method is suitable for batch processing of the taper holes with the small end holes larger than 50 mm.

The working principle is as follows: the included angle between the rotation central line of the boring cutter bar and the transmission screw rod track is designed to be 1/2 of the angle of the taper hole to be machined, the boring cutter bar is connected with a driving device and can move back and forth relative to one end face of the taper hole machine barrel through the driving device, the transmission screw rod axially moves the boring cutter through speed regulation of the driving device, and the boring cutter axially rotates along the fixed included angle track to feed and cut to complete machining.

Claims (10)

1. The utility model provides a bore hole device of bell mouth barrel, is including bore hole cutter arbor (1) that is provided with boring cutter (11), can drive and stretch into bore hole cutter arbor (1) pivoted drive arrangement (3) in barrel (5) bell mouth (51) and can fix positioner (4) of bell mouth barrel (5), its characterized in that: the boring cutter bar (1) is a conical cutter bar with one larger end diameter and the other smaller end diameter, the taper of the boring cutter bar (1) is matched with the taper of a conical hole (51) of a machine barrel (5), a dovetail groove (12) with an open top surface and a wide bottom and a narrow upper part is axially formed in the conical surface of the boring cutter bar (1), the boring cutter (11) can be arranged in the dovetail groove (12) in a back-and-forth sliding mode, a transmission device (2) capable of driving the boring cutter (11) to slide back and forth along the dovetail groove (12) is arranged on the boring cutter bar (1), and when the boring cutter (11) bores the conical hole of the machine barrel through the boring cutter bar (1), the boring cutter (11) can rotate together with the boring cutter bar (1) under the driving of the boring cutter bar (1) and can move axially in the dovetail groove (12).

2. A boring device as claimed in claim 1, wherein: the transmission device (2) comprises a transmission screw rod (21), wherein the transmission screw rod (21) is axially arranged at the central shaft of the boring cutter bar (1) and can stretch into a through hole (13) inside the boring cutter bar (1) from one end of the boring cutter bar (1), the through hole (13) extends to the other end of the boring cutter bar (1), a sliding groove communicated with the through hole (13) is formed in the bottom surface of the dovetail groove (12) downwards, the transmission screw rod (21) can be rotatably arranged in the through hole (13), the boring cutter (11) is linked with the transmission screw rod (21) through a connecting piece (15), one end of the transmission screw rod (21) is linked with an output shaft of a transmission motor, and when the transmission screw rod (21) rotates, the transmission screw rod (21) drives the boring cutter (11) to move back and forth in the dovetail groove (12).

3. A boring device as claimed in claim 2, wherein: the connecting piece (15) comprises a connecting rod (151) and a nut sleeve (152) which is sleeved on the screw thread of the transmission screw rod (21) and can axially move along the transmission screw rod (21) when the transmission screw rod (21) rotates, the connecting rod (151) can move back and forth and is arranged in the sliding groove, the bottom end of the connecting rod (151) is fixedly connected with the nut sleeve (152), the upper end of the connecting rod (151) is fixedly connected with the boring cutter (11), and one end of the transmission screw rod (21) extends out from one end with the larger diameter of the boring cutter bar (1) and is linked with an output shaft of a transmission motor.

4. A boring device as claimed in claim 3, wherein: the boring device is characterized in that the driving device (3) can move back and forth relatively along one end face of the cylinder (5) with the corresponding tapered hole through a driver, the driving device (3) comprises a driving part (31) located at one end of the positioning device (4) and a transmission part (32) located at the other end of the positioning device (4), the driving part (31) comprises a driving motor (311) and a rolling part (312) driven by the driving motor (311), one end, with the larger diameter, of the boring cutter bar (1) is fixed with the rolling part (312), the end part of the transmission screw rod (21) extending out of one end, with the larger diameter, of the boring cutter bar (1) can rotatably penetrate through an axial center hole of the rolling part (312) and is linked with an output shaft of the driving motor (311), when the tapered hole cylinder (5) is bored, the tapered hole (5) is placed on the positioning device (4) for positioning, and the end, with the smaller diameter, of the boring cutter bar (1) can move back and forth relatively from the tapered hole (51) at the end, with the larger diameter, with the tapered hole (5), with the larger diameter, of the tapered hole (51), with the larger diameter, of the tapered hole And a tapered hole cylinder (5) is inserted into and extended out of the tapered hole (51) at one end with a small diameter to be rotatably connected with the transmission part (32).

5. The boring device of claim 4, wherein: the rolling part (312) comprises a rolling bearing (314) and a rolling shaft (315), an axial center hole is located on the axis of the rolling shaft (315), the rolling shaft (315) can be rotationally fixed on a fixed seat (316) in the driving part (31) through the rolling bearing (314), one end of the rolling shaft (315) is mutually fixed with a flange fixed at one end with a larger diameter of the boring cutter bar (1) through a flange, the other end of the rolling shaft (315) is linked with an output shaft of the driving motor (311) through a transmission gear or a transmission belt, a second rolling shaft (317) capable of rotating relative to the rolling shaft (315) is installed in the axial center hole, one end of the second rolling shaft (317) is fixed with the end part of the transmission screw rod (21) extending out of the end face of the cutter bar (1) with the larger diameter, and the other end of the second rolling shaft (317) extends out of the corresponding end face of the rolling shaft (315) through the transmission gear or the transmission belt The output shafts of the transmission motors are linked together.

6. The boring device of claim 4, wherein: the transmission portion (32) is including rolling transmission bearing (321), drive roller (322) can be changeably fixed in on transmission seat (326) of transmission portion (32) through transmission bearing (321), the terminal surface fixed connection that the diameter is less of drive roller (322) and bore hole cutter arbor (1) is in the same place.

7. The boring device of claim 5, wherein: a tensioning positioning rod (324) is arranged in the axis of the transmission rolling shaft (322), a conical concave cavity (325) is concavely arranged on one surface of the transmission rolling shaft (322) opposite to the end surface of the boring cutter bar (1), a cone part (16) which is matched with the shape of the conical cavity (325) is fixed on the end surface with smaller diameter of the boring cutter bar (1), a fixing hole which is connected with one end of the tensioning positioning rod (324) in an extending way is concavely arranged on the outer end surface of the cone part (16), when the end surface of the boring cutter bar (1) with smaller diameter is connected with the transmission roller (322), the cone part (16) extends into the conical cavity (325), one end of the tensioning positioning rod (324) extends into a fixing hole of the cone part (16) and is fixed together through a bolt, and the other end of the tensioning and positioning rod (324) extends out of the other end of the transmission roller (322) and is fixed with the transmission roller (322) through a fixing nut.

8. The boring device of claim 4, wherein: the positioning device (4) comprises at least two movable supports (41) which are arranged at intervals and can clamp and fix the tapered hole machine barrel (5) and drive the tapered hole machine barrel (5) to move back and forth, synchronous servo motors (42) which can control the movable supports and the tapered hole machine barrel to move back and forth are respectively installed on the movable supports (41), and the synchronous servo motors (42) are connected with a numerical control device through leads.

9. The boring device of claim 4, wherein: the driver is a hydraulic cylinder driver or a motor driver.

10. A boring device according to any one of claims 1 to 9, wherein: the tapered hole machine barrel (5) is a tapered double machine barrel or a tapered hole machine barrel with a single hole.

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