CN112108708A - Locking device, automatic reloading device and automatic reloading method for broach chuck body - Google Patents
Locking device, automatic reloading device and automatic reloading method for broach chuck body Download PDFInfo
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- CN112108708A CN112108708A CN202011085717.2A CN202011085717A CN112108708A CN 112108708 A CN112108708 A CN 112108708A CN 202011085717 A CN202011085717 A CN 202011085717A CN 112108708 A CN112108708 A CN 112108708A
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- broach
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- 238000001514 detection method Methods 0.000 claims description 23
- 230000008569 process Effects 0.000 claims description 14
- 230000008859 change Effects 0.000 claims description 11
- 238000003825 pressing Methods 0.000 claims description 10
- 238000009423 ventilation Methods 0.000 claims description 9
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- 230000009471 action Effects 0.000 description 5
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- 238000004519 manufacturing process Methods 0.000 description 5
- 238000003754 machining Methods 0.000 description 3
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D39/00—Accessories for broaching machines or broaching devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D41/00—Broaching machines or broaching devices characterised only by constructional features of particular parts
- B23D41/04—Broaching machines or broaching devices characterised only by constructional features of particular parts of tool-carrying arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
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Abstract
The invention relates to a locking device of a broach chuck head body, comprising: the fixed seat is provided with a convex column part, the convex column part is axially hollow to form a mounting hole for the end part of the broach chuck body to be installed in, and at least one through hole penetrating through the mounting hole is radially formed on the peripheral wall; at least one locking block, the number of which is consistent with that of the through holes, and the locking block is movably arranged in the through holes along the radial direction of the convex column part; the locking sleeve is movably sleeved outside the convex column part of the fixed seat and has a locking state of inwards acting on the locking block to compress the broach chuck body and an unlocking state of releasing the locking block to release the compression of the broach chuck body; and the elastic piece acts on the locking block, so that the locking block always has the tendency of moving outwards along the length direction of the through hole. The locking device enables the mounting and dismounting operations of the broach clamping head body to be more convenient, and effectively improves the replacement efficiency. Also relates to an automatic changing device and an automatic changing method of the broach clamping head body applying the locking device.
Description
Technical Field
The invention relates to the technical field of broaching machines, in particular to a locking device of a broaching tool chuck body, an automatic replacing device and an automatic replacing method of the broaching tool chuck body.
Background
The broaching machine is a machine tool for machining a through hole, a plane, a formed surface, etc. of a workpiece by using a broaching tool as a tool, and generally includes a vertical broaching machine and a horizontal broaching machine. The currently used vertical internal broaching machine generally comprises a base, a machine body, a slide carriage and a driving mechanism, wherein the driving mechanism can be used for driving the slide carriage to move up and down, a workpiece is placed on a workbench clamp of the slide carriage, a broaching tool is fixed on a chuck body on the base, and when the slide carriage drives the workpiece to move, broaching of the workpiece by the broaching tool can be realized.
The clamping and the sword of sending of broach of traditional broaching machine mainly are operated by manual work cooperation, because the broach is mostly long again heavy, consequently need two people's cooperations at least just can accomplish the operation, and there is the problem of artifical intensity of labour height, inefficiency in this kind of mode. With the development of modern machine manufacturing intellectualization, a series of automatic broaching machine equipment and automatic production lines applying the broaching machine equipment for processing appear, for example, the Chinese patent application with the application number of CN201811357273.6 (publication number of CN109202167A) discloses an automatic tool changing system of a broaching machine; for another example, chinese patent application No. CN201810664584.0 (publication No. CN108526967A) discloses "an automatic tool changer for a broaching machine and a control method thereof".
The automatic change of the broaching tool can be realized in the automatic equipment of the existing broaching machine, however, the broaching process of the existing workpiece usually needs to be carried out a plurality of broaching procedures, tools with different specifications need to be used in each broaching procedure, and the tools with different specifications need to be matched with different broaching tool chuck bodies, so that the chuck bodies need to be correspondingly changed when the broaching tool is changed. And the chuck body of current broaching machine is on the base of broaching machine through the bolt direct fastening basically, needs the manual work to dismantle the change, and the change process is loaded down with trivial details relatively, can not be well with present intelligent broaching machine equipment or automation line looks coherent.
Disclosure of Invention
The first technical problem to be solved by the present invention is to provide a locking device for a broach chuck body, which can effectively simplify the process of changing the broach chuck body and is convenient to operate.
The second technical problem to be solved by the present invention is to provide an automatic changing device of a broach chuck body, which is convenient to operate, high in changing efficiency and easy to be engaged with an automatic production line, aiming at the current situation of the prior art.
The third technical problem to be solved by the invention is to provide an automatic changing method of the broach chuck body, which is convenient to operate, high in changing efficiency and easy to be engaged with an automatic production line, aiming at the current situation of the prior art.
The technical scheme adopted by the invention for solving the first technical problem is as follows: a locking device for a broach head body, comprising:
the fixed seat is provided with a convex column part, the convex column part is axially hollow to form a mounting hole for the end part of the broach chuck body to be installed in, and the peripheral wall is radially provided with at least one through hole penetrating through the mounting hole;
the locking blocks are consistent with the through holes in number, arranged in the through holes and capable of moving back and forth along the length direction of the through holes;
the locking sleeve is movably sleeved outside the convex column part of the fixed seat and has a locking state of inwards acting on the locking block to compress the broach chuck body and an unlocking state of releasing the locking block to release the compression of the broach chuck body;
the elastic piece acts on the locking block to enable the locking block to always have the trend of moving outwards along the length direction of the through hole.
In order to realize the compressing and releasing of the locking block by the locking sleeve, the locking sleeve can slide along the axial direction of the convex column part of the fixing seat, a compressing part and a positioning concave part are sequentially formed on the inner wall of the locking sleeve along the axial direction of the locking sleeve, the compressing part of the locking sleeve is shifted to the position corresponding to the through hole and is inwards compressed under the locking state of the locking sleeve, the compressing part of the locking sleeve is far away from the through hole, so that the part of the locking block is accommodated in the positioning concave part. It is conceivable that the locking sleeve may be rotationally constrained on the convex column portion of the fixing seat by taking an axis of the convex column portion as a center, that is, a locking action or an unlocking action is realized in a rotation process of the locking sleeve, and correspondingly, a pressing portion and a positioning concave portion capable of being matched with the locking block may be sequentially formed on an inner wall of the locking sleeve along a circumferential direction thereof.
In order to facilitate machining and reduce machining cost, the locking sleeve is divided into a small-diameter part located at the upper part and a large-diameter part located at the lower part along the axial direction of the locking sleeve, the inner diameter of the small-diameter part is matched with the outer diameter of the convex column part of the fixing seat, a first guide inclined surface is formed between the small-diameter part and the large-diameter part of the locking sleeve, the first guide inclined surface forms the pressing part, the large-diameter part forms the positioning concave part, a second guide inclined surface is arranged on the locking block corresponding to the first guide inclined surface, and the inclination direction of the second guide inclined surface is consistent with the inclination direction of the first guide inclined surface.
In order to reasonably arrange the elastic piece and better act on the locking block to reset the locking block, the outer end part of the locking block is provided with a positioning stop part which protrudes laterally relative to the wall surface of the locking block, and the elastic piece is a spring arranged between the positioning stop part and the convex column part of the fixed seat.
The technical scheme adopted by the invention for solving the second technical problem is as follows: an automatic reloading device of a locking device applying the broach chuck body comprises: the manipulator is positioned on one side of the fixed seat and used for placing the broach chuck body into the mounting hole of the fixed seat and taking the broach chuck body out of the mounting hole of the fixed seat;
and the power output end of the driving device is connected with the locking sleeve so as to drive the locking sleeve to slide along the axial direction of the convex column part of the fixed seat, and the locking sleeve is in a locking state of acting inwards on the locking block to compress the broach chuck body and in an unlocking state of releasing the locking block to release the compression of the broach chuck body.
In order to detect whether the broach holder head body is arranged in place, the broach holder head body detection device further comprises a position recognition device which is in signal communication with the control system, wherein the position recognition device is arranged on one side of the locking sleeve and comprises a first proximity switch arranged above and a second proximity switch arranged below, the first proximity switch is used for recognizing whether the locking sleeve moves to the unlocking state corresponding position, and the second proximity switch is used for recognizing whether the locking sleeve moves to the locking state corresponding position.
In order to further detect whether the broach chuck body is arranged in place after replacement and to ensure that the broach chuck body is firmly clamped, the broach chuck body further comprises an air tightness detection device which is in signal communication with a control system, the upper end surface of the convex column part of the fixed seat can be attached to a step surface correspondingly arranged on the broach chuck body, the convex column part of the fixed seat is provided with an air vent which penetrates through the upper end surface of the convex column part of the fixed seat, and the air vent is connected with the air tightness detection device.
In order to improve the accuracy of detecting whether the broach chuck body is arranged in place, at least three air outlet ports of the ventilation pore channel are provided, and the air outlet ports are sequentially arranged at intervals along the circumferential direction of the upper end surface of the convex column part of the fixed seat.
As an improvement, the air tightness detection device comprises an air inlet pipe, a pressure sensor and a control valve, the air inlet pipe is connected with an air inlet port of the ventilation duct, the control valve is arranged on the air inlet pipe and used for controlling the on-off of the air inlet pipe, and the pressure sensor is arranged on the air inlet pipe and correspondingly located between the ventilation duct and the control valve.
The technical scheme adopted by the invention for solving the third technical problem is as follows: an automatic changing method of a broach chuck body comprises the following steps:
clamping, namely clamping a to-be-assembled broach chuck body by a manipulator, then installing the broach chuck body into an installation hole of a convex column part of a fixed seat, then loosening the manipulator, starting a driving device to act to drive a locking sleeve to slide to a lower position along the axial direction of the convex column part of the fixed seat, when the locking sleeve moves downwards to a set position, enabling the locking sleeve to act inwards on a locking block to enable the locking block to be tightly pressed on the broach chuck body and to be kept in a locking state, meanwhile, identifying whether the locking sleeve moves to a position corresponding to the locking state by a position identification device, and feeding a signal back to a control system, alarming if the locking sleeve does not move to the set position, and controlling an air tightness detection device to carry out an air tightness detection process by the control system after the locking sleeve moves to the set position.
And an air tightness detection step, wherein after the clamping step is finished, a control valve of the air tightness detection device is opened, air is introduced into an air duct of the fixed seat through an air inlet pipe, after the pressure in the air duct reaches a set value, the control valve is closed, then a control system judges whether the upper end surface of the convex column part of the fixed seat is attached to a step surface on the broach chuck body or not through the change of the air pressure detected by the pressure sensor, and further judges whether the broach chuck body is qualified for clamping, if the change range of the air pressure detected by the pressure sensor reaches or exceeds a preset value, the broach chuck body is unqualified for clamping, an alarm is given, and if the change range of the air pressure detected by the pressure sensor does not exceed the preset value, the broach chuck body is judged to be qualified, namely, the process of replacing the.
Compared with the prior art, the invention has the advantages that: after the broach chuck head body is inserted into the mounting hole of the fixed seat, the broach chuck head body inserted into the fixed seat can be effectively clamped through the matching of the locking sleeve and the locking block; when the broach chuck body needs to be taken out of the mounting hole of the fixing seat, the locking block can move outwards along the through hole of the mounting seat under the elastic action of the elastic piece to release the broach chuck body while the locking sleeve is released from pressing the locking block. The structure arrangement enables the mounting and dismounting operations of the broach chuck body to be more convenient, and effectively improves the replacement efficiency. In addition, in the automatic changer applying the locking device, the locking sleeve can be driven by the driving device to slide up and down along the convex column part of the fixed seat, so that the locking sleeve can be correspondingly in a locking state and an unlocking state, and the automatic changer can realize automation of the changing process of the broach chuck body by matching with the transferring operation of placing the broach chuck body on the fixed seat or taking the broach chuck body out of the fixed seat by a manipulator, thereby being well engaged with the current intelligent broaching machine equipment or automatic production line.
Drawings
FIG. 1 is a schematic perspective view of an automatic reloading device according to an embodiment of the invention;
fig. 2 is a schematic perspective view of the locking device of the broach chuck body in an unlocked state according to the embodiment of the present invention (the protection cover is omitted);
fig. 3 is a schematic perspective view of a locking device of a broach chuck body according to an embodiment of the present invention in a locked state;
FIG. 4 is a front view of FIG. 3;
fig. 5 is a cross-sectional view taken at a-a of fig. 4 (in an unlocked state, the broach cartridge body not shown);
FIG. 6 is a cross-sectional view taken at A-A in FIG. 4 (in a locked state);
fig. 7 is a vertical cross-sectional view of the locking device of the broach chuck body according to an embodiment of the present invention in an unlocked state (showing the locking block);
fig. 8 is a vertical cross-sectional view of the locking device of the broach chuck body according to an embodiment of the present invention in a locked state (showing the locking block);
fig. 9 is a schematic structural diagram of an air-tightness detecting device according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
Referring to fig. 1 to 9, a locking device of a broach chuck body includes a holder 10, a shield 18, a locking block 20, a locking sleeve, and an elastic member 40. The holder 10 can be fixed to the base of the bench. The fixing base 10 has a convex column portion 12 extending upward, and the convex column portion 12 may be a separate component detachably connected to the fixing base 10, or may be designed integrally with the fixing base 10. The convex column portion 12 of the fixing base 10 is axially hollow to form a mounting hole 120, and the end of the bit holder body 60 can be inserted into the mounting hole 120 from top to bottom. Specifically, the bit holder body 60 is substantially cylindrical, and has a step surface 61 on its outer circumferential wall, and when the bit holder body 60 is assembled in place, the step surface 61 of the bit holder body 60 can be attached to the upper end surface of the stud portion 12 of the fixing base 10. The shield 18 is covered on the holder 10 to prevent debris from the broaching process from entering the locking device. The shield 18 also has an opening for the bit holder body 60 to pass through at a position corresponding to the mounting hole 120 of the holder 10.
Referring to fig. 5 and 8, the convex column portion 12 of the fixing base 10 is radially provided with at least one through hole 15 penetrating through the mounting hole 120 on the circumferential wall. At least one locking piece 20 is provided, the number of which is the same as the number of the through holes 15. Wherein the locking block 20 is movably disposed in the through hole 15 along the radial direction of the stud portion 12. In order to firmly press the bit holder body 60 when the locking block 20 moves inwards, the outer peripheral wall of the bit holder body 60 is provided with an annular limiting clamping groove 62, the cross section of the limiting clamping groove 62 is trapezoidal, correspondingly, the inner end part of the locking block 20 is provided with a wedge part matched with the limiting clamping groove 62, when the locking sleeve 30 presses the locking block 20 inwards, the wedge part of the locking block 20 can act on the inner side wall of the limiting clamping groove 62, and then the bit holder body 60 is tensioned downwards, so that the bit holder body 60 is firmly locked.
Referring to fig. 5 and 6, the locking sleeve 30 is sleeved on the convex column portion 12 of the fixing base 10 and can slide along the axial direction of the convex column portion 12 of the fixing base 10. The locking sleeve 30 has a locked condition and an unlocked condition during axial sliding movement. Specifically, the inner wall of the locking sleeve 30 is formed with a pressing portion and a positioning recess in this order along the axial direction thereof, and the pressing portion of the locking sleeve 30 is displaced to a position corresponding to the through hole 15 to press the locking block 20 inward in the locked state of the locking sleeve 30. In the unlocked state of the lock sleeve 30, the pressing portion of the lock sleeve 30 is away from the through hole 15, and the lock block 20 is moved outward and partially received in the positioning recess. The positioning recess may be an annular groove or a concave structure formed on a part of the inner wall of the locking sleeve 30, as long as the locking block 20 can be moved outside to release the locking block from pressing the chuck body 60. In the present embodiment, the locking sleeve 30 is divided into a small diameter portion 31 at an upper portion and a large diameter portion 32 at a lower portion along an axial direction thereof, and a first guide slope 33 is formed between the small diameter portion 31 and the large diameter portion 32. The first guide slope 33 of the locking block 20 corresponding to the locking sleeve 30 has a second guide slope 21, and the slope direction of the second guide slope 21 is the same as the slope direction of the first guide slope 33. The inner diameter of the small diameter portion 31 is matched with the outer diameter of the convex column portion 12 of the fixed seat 10, the large diameter portion 32 of the locking sleeve 30 forms the positioning concave portion, and the first guiding inclined surface 33 forms the pressing portion. During the downward movement of the locking sleeve 30, the first guiding inclined surface 33 of the locking sleeve 30 can act on the second guiding inclined surface 21 of the locking block 20, so as to drive the locking block 20 to move inwards along the length direction of the through hole 15, and further press the chuck head body 60.
Referring to fig. 7 and 8, in the present embodiment, when the locking sleeve 30 moves downward to the lower position, it is in a locking state, in the locking state, the small diameter portion 31 of the locking sleeve corresponds to the through hole 15 of the fixing seat 10, and presses the locking block 20 inward, so that the locking block 20 is pressed against the bit holder body 60, and the bit holder body 60 is locked. When the locking sleeve 30 moves upwards to an upper position, the locking sleeve is in an unlocked state, in the unlocked state, the large-diameter part 32 of the locking sleeve 30 corresponds to the through hole 15 of the fixed seat 10, and under the action of the elastic piece 40, the locking block 20 can automatically move outwards along the length direction of the through hole 15, so that the compression locking of the broaching tool holder head body 60 is released.
Referring to fig. 7, the side wall of the boss portion 12 of the base has an offset groove 16 corresponding to the outer port of the through hole 15, and the offset groove 16 is communicated with the through hole 15. In this embodiment, the elastic member 40 is a spring, and the spring is disposed in the recess 16. The locking block 20 has laterally projecting detents 22 on its lower side wall. The positioning stop portion 22 and the locking block 20 may be formed as two separate pieces or integrally designed, and in this embodiment, for convenience of processing, the positioning stop portion 22 and the locking block 20 are formed as separate pieces and can be rotatably assembled together. The positioning stopper 22 has a first positioning hole 220, a second positioning hole 161 is formed on the bottom surface of the receding groove 16, and both ends of the spring are positioned in the first positioning hole 220 and the second positioning hole 161, respectively. The locking piece 20 always has a tendency to move outward in the length direction of the through hole 15 by the elastic force of the above spring.
With reference to fig. 1 and 2, an automatic tool changer for a chuck body of a broach comprises the above-mentioned locking device for a chuck body of a broach, a manipulator 63, a driving device 50, a position recognition device, and an air tightness detection device. Wherein, the position recognition device, the air tightness detection device and the driving device 50 are all in signal communication with the control system.
The robot 63 is located at one side of the holder 10 for placing the chuck body 60 into the mounting hole 120 of the holder 10 or taking it out of the mounting hole 120 of the holder 10. The power output end 51 of the driving device 50 is connected to the locking sleeve 30, so as to drive the locking sleeve 30 to slide along the axial direction of the convex column portion 12 of the fixed seat 10, and make the locking sleeve 30 in a locking state of pressing the locking block 20 inwards or an unlocking state of releasing the locking block 20 and making the locking block 20 move outwards. Specifically, the driving device 50 in this embodiment is a cylinder fixedly connected to the fixing base 10, and an output shaft of the cylinder is connected to a side wall of the locking sleeve 30 through a connecting plate 52. When the cylinder is operated, the power output shaft of the cylinder can drive the locking sleeve 30 to move to the lower position to be in a locking state and to move to the upper position to be in an unlocking state.
Referring to fig. 2 to 4, the position recognition means is located at one side of the connection plate 52 and includes a first proximity switch 81 located at an upper side and a second proximity switch 82 located at a lower side. The first proximity switch 81 is used to identify whether the connection plate 52 is moved to the upper position, and the second proximity switch 82 is used to identify whether the connection plate 52 is moved to the lower position.
Referring to fig. 5 and 6, in order to detect whether the broach chuck body 60 is positioned in place, thereby ensuring the locking reliability of the broach chuck body 60, the convex column portion 12 of the fixing base 10 has a vent hole 17 penetrating to the upper end surface of the convex column portion 12 of the fixing base 10, and the air tightness detecting device is connected to an air inlet 172 of the vent hole 17. Specifically, there are at least three air outlet ports 171 of the ventilation duct 17, and each air outlet port 171 is sequentially arranged at intervals along the circumferential direction of the upper end surface of the convex column portion 12 of the fixing base 10. The number of the air outlet ports 171 of the vent hole 17 is three in the embodiment, and the three air outlet ports 171 are arranged in the circumferential direction of the upper end surface of the convex column part 12, so that whether the step surface 61 of the broach chuck body 60 and the upper end surface of the convex column part 12 of the fixing seat 10 are in a fit state can be effectively detected, and the accuracy of replacement and in-place detection of the broach chuck body 60 is further ensured.
With reference to fig. 5, in order to facilitate the processing of the vent hole 17 on the convex column portion 12 of the fixing base 10, the fixing base 10 includes a fixing base body 11 and a convex column portion 12 disposed on the fixing base body 11, the fixing base body 11 has a placement hole, a lower end of the convex column portion 12 is disposed in the placement hole, and is axially limited by a step portion 14 disposed on an outer peripheral wall of the convex column portion 12. The convex column part 12 is connected with the fixed seat body 11 through a bolt. The vent channel 17 comprises three axial segments 173 and one radial segment 174, wherein the axial segment 173 extends in a direction substantially corresponding to the axial direction of the convex cylindrical portion 12, and the radial segment 174 extends in a direction substantially corresponding to the radial direction of the convex cylindrical portion 12. The radial section 174 passes through the outer peripheral wall of the convex column portion 12 to one of the axial sections 173, and an outer port of the radial section 174 is an air inlet port 172 of the vent hole 17. An annular communication groove 13 is formed in the lower end face of the step portion 14 of the convex column body, and the lower ports of the three axial sections 173 are communicated with the annular communication groove 13. Two sealing rings 19 are arranged in the annular communicating groove 13, when the convex column part 12 and the fixed seat body 11 are assembled together, the two sealing rings 19 can realize sealing at the combination position of the two, and the gas conveyed by the gas tightness detection device is prevented from leaking at the position of the annular communicating groove 13. The upper end opening of the axial section 173 is the air outlet, and in this embodiment, the inner diameter of the upper part of the axial section 173 is smaller than that of the lower part, i.e. the aperture of the air outlet is smaller than that of the main body part of the axial section 173.
Referring to fig. 9, an external air source is communicated with the air inlet port 172 of the vent passage 17 through an air tightness detecting device. The airtightness detecting device includes an intake pipe 71, a pressure sensor 72, and a control valve 73. The air inlet pipe 71 is connected with an air inlet port 172 of the vent duct 17, and the control valve 73 is arranged on the air inlet pipe 71 and used for controlling the on-off of the air inlet pipe 71. The control valve 73 of the present embodiment may be specifically selected to be a solenoid valve. The pressure sensor 72 is provided on the intake pipe 71 and is located between the breather passage 17 and the control valve 73.
The automatic changing method of the broach chuck body comprises the following steps:
a clamping step, after the manipulator 63 clamps the to-be-assembled broach holder body 60, the broach holder body 60 is installed in the installation hole 120 of the convex column part 12 of the fixed seat 10, then the manipulator 63 is released, the cylinder starts to act to drive the locking sleeve 30 to slide to the lower position along the axial direction of the convex column part 12 of the fixed seat 10, when the locking sleeve 30 moves downwards to the set position, the locking sleeve 30 can act inwards on the locking block 20 to enable the locking block 20 to be tightly pressed on the broach holder body 60 and is kept in the locking state, the position identification device can identify whether the locking sleeve 30 moves to the corresponding position of the locking state or not and feed back a signal to the control system, if the locking sleeve does not move to the set position, an alarm is given, if the locking sleeve moves to the set position, the second proximity switch 82 of the position identification device can identify the position and feed back the signal to the control system, and then the control system controls the air tightness detection device to carry out an air tightness detection process.
And an air tightness detection step, wherein after the clamping step is completed, a control valve 73 of the air tightness detection device is opened, air is introduced into the air duct 17 of the fixed seat 10 through an air inlet pipe 71, after the pressure in the air duct 17 reaches a set value (generally about 0.2 MPa), the control valve 73 is closed, and then the control system judges whether the upper end surface of the convex column part 12 of the fixed seat 10 is attached to the step surface 61 on the broach holder head body 60 or not through the change of the air pressure detected by the pressure sensor, so as to judge whether the broach holder head body 60 is qualified in clamping. If the change range of the gas pressure detected by the pressure sensor 72 reaches or exceeds a preset value (if the gas pressure is equal to or lower than 0.15Mpa within the set time of 2 s), determining that the clamping of the chuck holder body 60 is unqualified, and alarming; if the gas pressure variation range detected by the pressure sensor 72 does not exceed the predetermined value (e.g., the gas pressure is not lower than 0.15Mpa within the set time of 2 s), it is determined that the clamping of the holder head body 60 is qualified, and the process of replacing the holder head body 60 is completed.
A disassembling step, when the broach chuck body 60 needs to be replaced, the cylinder starts to act to drive the locking sleeve 30 to slide to an upper position along the axial direction of the convex column part 12 of the fixed seat 10, when the locking sleeve 30 moves to a set position, the locking sleeve 30 is in an unlocking state, under the action of the elastic piece 40, the locking block 20 can automatically move outwards along the through hole 15 of the convex column part 12 and partially extend into the positioning concave part of the locking sleeve 30, so that the locking of the broach chuck body 60 is released, the first approach switch 81 of the position identification device can identify the unlocking state and feed back a signal to a control system, then the control system controls the manipulator 63 to act to take out the broach chuck body 60 from the mounting hole 120 of the convex column part 12 of the fixed seat 10 and place the broach chuck body 60 to a preset position, and the disassembling process of the broach chuck body 60 is completed. Then, the above-mentioned clamping step and the air tightness detection step are sequentially repeated to realize the replacement process of the other chuck head body 60.
Claims (10)
1. A locking device for a chuck body of a broach, characterized by comprising:
the fixing seat (10) is provided with a convex column part (12), the convex column part (12) is axially hollow to form a mounting hole (120) for the end part of the chuck head body (60) to be installed in, and the peripheral wall is radially provided with at least one through hole (15) penetrating through the mounting hole (120);
at least one locking block (20) which is consistent with the number of the through holes (15), is arranged in the through holes and can reciprocate along the length direction of the through holes;
the locking sleeve (30) is movably sleeved outside the convex column part (12) of the fixed seat (10), and has a locking state of inwards acting on the locking block (20) to press the broach chuck body (60) and an unlocking state of releasing the locking block to release the compression of the broach chuck body;
and the elastic piece (40) acts on the locking block to enable the locking block (20) to always have the tendency of moving outwards along the length direction of the through hole (15).
2. The locking device of a bit holder body according to claim 1, wherein: the locking sleeve (30) can be along the axial slip of the projection part (12) of fixing base (10), it has the portion of compressing tightly and location concave part to follow its axial shaping in proper order on the inner wall of locking sleeve (30) are in under the locking state, the portion of compressing tightly of locking sleeve (30) shift to with through-hole (15) corresponding position and inwards compress tightly locking block (20) locking sleeve (30) are in under the unblock state, the portion of compressing tightly of locking sleeve (30) is kept away from through-hole (15) and make the part of locking block (20) accept in the location concave part.
3. The locking device of a bit holder body according to claim 2, wherein: the locking sleeve (30) is divided into a small-diameter part (31) located at the upper part and a large-diameter part (32) located at the lower part along the axial direction of the locking sleeve, the inner diameter of the small-diameter part (31) is matched with the outer diameter of a convex column part (12) of the fixed seat (10), a first guide inclined surface (33) is formed between the small-diameter part (31) and the large-diameter part (32) of the locking sleeve (30), the first guide inclined surface (33) forms the pressing part, the large-diameter part (32) forms the positioning concave part, a second guide inclined surface (21) is arranged on the locking block (20) corresponding to the first guide inclined surface (33), and the inclination direction of the second guide inclined surface (21) is consistent with the inclination direction of the first guide inclined surface (33).
4. The locking device of a bit holder body according to claim 1, wherein: the outer end part of the locking block (20) is provided with a positioning stop part (22) which protrudes laterally relative to the wall surface of the locking block (20), and the elastic part (40) is a spring arranged between the positioning stop part (22) and the convex column part (12) of the fixed seat (10).
5. An automatic reloading device using a locking device as claimed in claims 1 to 4, characterized in that it comprises:
the manipulator (63) is positioned on one side of the fixed seat (10) and is used for placing the broaching tool chuck body (60) into the mounting hole (120) of the fixed seat (10) and taking the broaching tool chuck body (60) out of the mounting hole (120) of the fixed seat (10);
and a power output end (51) of the driving device (50) is connected with the locking sleeve (30), so that the locking sleeve (30) is driven to slide along the axial direction of the convex column part (12) of the fixed seat (10), and the locking sleeve (30) is in a locking state of inwards acting on the locking block (20) to compress the broach chuck body (60) and in an unlocking state of releasing the locking block to release the compression of the broach chuck body.
6. The automatic reloading device as recited in claim 5, wherein: the locking device comprises a first proximity switch (81) and a second proximity switch (82), wherein the first proximity switch (81) is located above the locking device and located below the locking device, the first proximity switch (81) is used for identifying whether the locking device (30) moves to the unlocking state corresponding position, and the second proximity switch (82) is used for identifying whether the locking device (30) moves to the locking state corresponding position.
7. The automatic reloading device as recited in claim 6, wherein: the upper end face of the convex column part (12) of the fixed seat (10) can be attached to a step face (61) correspondingly arranged on the broach chuck body (60), the convex column part (12) of the fixed seat (10) is provided with a ventilation hole channel (17) penetrating to the upper end face of the convex column part (12) of the fixed seat (10), and the ventilation hole channel (17) is connected with the air tightness detection device.
8. The automatic reloading device as recited in claim 7, wherein: at least three air outlet ports (171) of the ventilation pore channels (17) are arranged, and the air outlet ports (171) are sequentially arranged at intervals along the circumferential direction of the upper end surface of the convex column part (12) of the fixed seat (10).
9. The automatic reloading device as recited in claim 7, wherein: the air tightness detection device comprises an air inlet pipe (71), a pressure sensor (72) and a control valve (73), wherein the air inlet pipe (71) is connected with an air inlet port (172) of the ventilation duct (17), the control valve (73) is arranged on the air inlet pipe (71) and used for controlling the on-off of the air inlet pipe (71), and the pressure sensor (72) is arranged on the air inlet pipe (71) and correspondingly located between the ventilation duct (17) and the control valve (73).
10. An automatic changing method of a broach chuck body is characterized by comprising the following steps:
clamping, after a manipulator (63) clamps a broach chuck body (60) to be assembled, the broach chuck body (60) is arranged in an installation hole (120) of a convex column part (12) of a fixed seat (10), then the manipulator (63) is loosened, a driving device (50) starts to act to drive a locking sleeve (30) to slide to a lower position along the axial direction of the convex column part (12) of the fixed seat (10), when the locking sleeve (30) moves downwards to a set position, the locking sleeve (30) can act inwards on a locking block (20) to enable the locking block (20) to be pressed on the broach chuck body (60) and keep in a locking state, meanwhile, a position identification device can identify whether the locking sleeve (30) moves to a position corresponding to the locking state or not and feed back a signal to a control system, if the locking sleeve (30) does not move to the set position, an alarm is carried out, if the locking sleeve (30) moves to the set position, the control system controls the air tightness detection device to carry out an air tightness detection process;
an air tightness detection step, wherein after the clamping step is finished, a control valve (73) of the air tightness detection device is opened, air is introduced into an air duct (17) of the fixed seat (10) through an air inlet pipe (71), the control valve (73) is closed after the pressure in the air duct (17) reaches a set value, then a control system judges whether the upper end face of the convex column part (12) of the fixed seat (10) is attached to a step face (61) on the broach chuck body (60) or not through the change of the air pressure detected by a pressure sensor, and further judges whether the broach chuck body (60) is qualified in clamping or not, if the change range of the air pressure detected by the pressure sensor (72) reaches or exceeds a preset value, the broach chuck body (60) is unqualified in clamping and gives an alarm, and if the change range of the air pressure detected by the pressure sensor does not exceed the preset value, the clamping of the broach chuck body (60) is judged to be qualified, and the process of replacing the broach chuck body (60) is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011085717.2A CN112108708A (en) | 2020-10-12 | 2020-10-12 | Locking device, automatic reloading device and automatic reloading method for broach chuck body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011085717.2A CN112108708A (en) | 2020-10-12 | 2020-10-12 | Locking device, automatic reloading device and automatic reloading method for broach chuck body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112108708A true CN112108708A (en) | 2020-12-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011085717.2A Pending CN112108708A (en) | 2020-10-12 | 2020-10-12 | Locking device, automatic reloading device and automatic reloading method for broach chuck body |
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| Country | Link |
|---|---|
| CN (1) | CN112108708A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114260763A (en) * | 2021-12-25 | 2022-04-01 | 唐山永丰轧辊有限公司 | Roll grinding device and method |
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| CN201079846Y (en) * | 2007-08-09 | 2008-07-02 | 林绿高 | Automatic broaching tool clamping device |
| CN103084899A (en) * | 2013-03-06 | 2013-05-08 | 中核（天津）机械有限公司 | Motor stator lathing clamp |
| CN206200578U (en) * | 2016-11-21 | 2017-05-31 | 格特拉克（江西）传动系统有限公司 | A kind of split type pulling chuck of vertical broaching machine |
| CN210755522U (en) * | 2019-09-10 | 2020-06-16 | 浙江畅尔智能装备股份有限公司 | Scrap blowing device for broach chuck body |
| CN212858003U (en) * | 2020-10-12 | 2021-04-02 | 浙江畅尔智能装备股份有限公司 | Locking device of broach chuck body and automatic reloading device applying same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201079846Y (en) * | 2007-08-09 | 2008-07-02 | 林绿高 | Automatic broaching tool clamping device |
| CN103084899A (en) * | 2013-03-06 | 2013-05-08 | 中核（天津）机械有限公司 | Motor stator lathing clamp |
| CN206200578U (en) * | 2016-11-21 | 2017-05-31 | 格特拉克（江西）传动系统有限公司 | A kind of split type pulling chuck of vertical broaching machine |
| CN210755522U (en) * | 2019-09-10 | 2020-06-16 | 浙江畅尔智能装备股份有限公司 | Scrap blowing device for broach chuck body |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114260763A (en) * | 2021-12-25 | 2022-04-01 | 唐山永丰轧辊有限公司 | Roll grinding device and method |
| CN114260763B (en) * | 2021-12-25 | 2024-04-02 | 唐山永丰轧辊有限公司 | Roller grinding device and method |
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