CN218135364U - Spiral internal broaching machine - Google Patents

Abstract

The utility model discloses a broaching machine in spiral, include: the broaching machine comprises a broaching machine main body, wherein the lower part of the broaching machine main body is provided with a lower tool holder for clamping a tool, the lower tool holder is connected with a first driving piece for driving the tool to rotate around a vertical central axis of the lower tool holder, and the broaching machine main body is provided with two guide rods extending vertically; the workbench is used for supporting and fixing a workpiece and enabling the workpiece to be vertically aligned with the lower tool holder, and is provided with two sliding holes which are respectively matched with the two guide rods in a sliding manner; the two second driving pieces are connected with the workbench and used for applying vertical driving force to the workbench so as to enable the workbench to vertically slide along the guide rod; the two guide rods and the two second driving pieces are symmetrically arranged relative to the rotation central axis of the cutter, and the central axes of the two guide rods, the rotation central axis of the cutter and the two stress centers of the working table corresponding to the two second driving pieces are coplanar. The utility model has the advantages of the machining precision is high and stability is high.

Description

Spiral internal broaching machine

Technical Field

The utility model relates to a machine tool equipment technical field, in particular to broaching machine in spiral.

Background

The spiral internal broaching machine in the prior art adopts a dovetail guide rail of a flat inclined guide plate, a moment arm which cannot be counteracted exists between a driving force, a supporting guide rail and a processing stress point during processing and is called a subversion moment arm, the self structural reason of the equipment causes that a processed workpiece still bears the subversion moment arm existing in the equipment during actual processing, the processed workpiece overcomes self deformation during processing, and meanwhile, the influence of equipment deformation is also received, so that the processing precision and stability are reduced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a broaching machine in spiral, machining precision and stability are high.

According to the utility model discloses broaching machine in spiral, include: the broaching machine comprises a broaching machine main body, wherein the lower part of the broaching machine main body is provided with a lower tool holder for clamping a tool, the lower tool holder is connected with a first driving piece for driving the tool to rotate around a vertical central axis of the tool, and the broaching machine main body is provided with two guide rods extending vertically; the workbench is used for supporting and fixing a workpiece and enabling the workpiece to be vertically aligned with the lower tool holder, and is provided with two sliding holes which are respectively matched with the two guide rods in a sliding manner; the two second driving pieces are connected with the workbench and used for applying vertical driving force to the workbench so as to enable the workbench to vertically slide along the guide rod; the two guide rods and the two second driving parts are symmetrically arranged relative to the rotation central axis of the cutter, and the central axes of the two guide rods, the rotation central axis of the cutter and two stress centers of the two second driving parts corresponding to the workbench are coplanar.

According to the utility model discloses broaching machine in spiral has following beneficial effect at least:

through setting up two second driving piece drive work platform and going up and down, set up two guide arms and be the workstation direction, and make two second driving pieces set up for the rotation center axis symmetry of cutter, make two guide arms set up for the rotation center axis symmetry of cutter, and make the central axis of two guide arms, the rotation center axis of cutter (correspond work piece processing force-receiving center), the workstation corresponds two force-receiving center homocoplanaries of two second driving pieces, thereby form five coplanaries highly symmetrical overall arrangement, make when processing add and offset each other with the arm of force that forms between work piece processing force-receiving center double-phase offside guide arm and second driving piece and the work piece processing force-receiving center, thereby the discrete rate when broaching has been reduced greatly, the machining precision and the stability of work piece have been improved.

According to some embodiments of the utility model, broaching machine main part upper portion is equipped with cutter lifting device, cutter lifting device includes last cutter holder and third driving piece, the third driving piece is used for the drive go up the vertical activity of cutter holder, go up cutter holder ability centre gripping the cutter top drives its vertical activity, lower cutter holder and go up the cutter holder homoenergetic and loosen the cutter.

According to some embodiments of the present invention, the working table is provided with a pressing device and a transfer assembly, the pressing device includes a fourth driving member and a pressing member connected to an output end thereof, the transfer assembly is used for placing a workpiece and is provided with a positioning structure for laterally positioning the workpiece, the transfer assembly is slidably provided in the working table in a front-back direction and is connected to a fifth driving member for driving the transfer assembly to slide in the front-back direction, and the transfer assembly can receive the workpiece at front and back sides of the pressing device; the transfer assembly can slide to the lower side of the pressing device, the pressing piece is vertically aligned with the workpiece, and meanwhile, the fourth driving piece can drive the pressing piece to vertically move so as to press or release the workpiece.

According to the utility model discloses a some embodiments, it includes can synchronous gliding transfer frame and supporting seat to transfer the subassembly, transfer the frame connect in the output of fifth driving piece, the supporting seat can be dismantled to be located transfer the frame, the supporting seat is used for supporting the work piece, just location structure locates the supporting seat.

According to the utility model discloses a some embodiments, the supporting baseplate of extension around the workstation is equipped with, the first guide rail that extends around being equipped with on the supporting baseplate, the subsides of supporting seat lower surface are located the supporting baseplate upper surface, and be equipped with first guide rail complex orienting groove, transfer to be equipped with on the frame be used for with the spacing limiting plate is offset to the supporting seat upper end, transfer to put up in both sides all are equipped with screws up two around the supporting seat screw up all wears to locate along the fore-and-aft direction screw thread transfer to put up, be used for respectively with both ends offset around the supporting seat.

According to some embodiments of the utility model, transfer to erect and be equipped with connecting rod, link, two scraping wings, the connecting rod with the link is located respectively both sides around the supporting seat, and all install the limiting plate with screw up the screw, two the interval sets up about the scraping wings, the connecting rod both ends respectively with two the end connection of scraping wings, link one end is rotated and is connected in the middle part of one of them scraping wings, and rotates the central axis and extend around, and the other end locks in another through a locking mechanical system the middle part of scraping wings, a locking mechanical system ability elastic activity is right to relieving the locking of link, so that the link can rotate to avoiding sliding path around the supporting seat.

According to some embodiments of the utility model, it has first equipment state and second equipment state to transfer the subassembly, is in during first equipment state, the connecting rod can connect in two with dismantling the front end of scraping wings, is in during the second equipment state, the connecting rod can connect in two with dismantling the rear end of scraping wings, just it is in to transfer the subassembly during first equipment state or during the second equipment state, the supporting seat all install spacing in the connecting rod with between the link.

According to some embodiments of the utility model, the cutter tip is equipped with the first conical surface, the cutter neck is equipped with the annular, the annular is close to the one end of first conical surface is equipped with the second conical surface, lower cutter holder includes: the center of the main cutter clamping body is provided with a mounting hole for mounting a cutter; the clamping jaws comprise two clamping jaws which are symmetrically arranged relative to the central axis of the mounting hole, the clamping jaws can be arranged in the main clamping cutter body in a penetrating mode along the radial direction of the mounting hole in a position adjusting mode, and a third conical surface used for being attached to the second conical surface is arranged at one end, facing the mounting hole, of each clamping jaw; the positioning taper sleeve is mounted in the mounting hole, a tapered hole which is narrowed inwards is formed in the end face, facing the clamping jaw, of the positioning taper sleeve, and the hole wall of the tapered hole is used for being attached to the first conical surface; the clamping jaw can be adjusted to a position along the radial direction of the mounting hole to enable the third conical surface to be tightly attached to the second conical surface, the first conical surface is enabled to be kept in a state of being tightly attached to the wall of the conical hole, and the cutter is limited in the axial direction and the radial direction.

According to some embodiments of the utility model, the lower tool holder still includes elastic mechanism and actuating mechanism, elastic mechanism is used for applying the edge the radial outside elastic force of mounting hole gives the jack catch, actuating mechanism is used for the drive the jack catch is followed the radial inward movement of mounting hole to can cooperate elastic mechanism is in order to realize the jack catch is followed the radial position control of mounting hole.

According to some embodiments of the utility model, the jack catch deviates from the one end of mounting hole is equipped with the fourth conical surface, actuating mechanism includes that the sliding sleeve is located the sliding sleeve in the main clamp cutter body outside and being used for the drive the gliding sixth driving piece of sliding sleeve, the sliding sleeve inner wall is equipped with the fifth conical surface, the fifth conical surface is with whole the jack catch the cooperation of fourth conical surface is pasted mutually.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention will be further described with reference to the following drawings and examples, in which:

fig. 1 is a schematic structural view of a spiral internal broaching machine according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a workbench according to an embodiment of the present invention;

fig. 3 is a schematic structural view of the transfer assembly according to the embodiment of the present invention in a first assembly state;

fig. 4 is a schematic structural view of the transfer assembly according to the embodiment of the present invention in a second assembly state;

fig. 5 is an exploded view of the transfer assembly of the embodiment of the present invention in a first assembled state;

fig. 6 is a schematic structural view of the pressing member according to the embodiment of the present invention;

fig. 7 is a schematic cross-sectional view of a pressing member according to an embodiment of the present invention;

FIG. 8 is an exploded view of the compression ring and the slide plate according to the embodiment of the present invention;

FIG. 9 is a schematic structural view of the lower tool holder of the embodiment of the present invention during clamping;

FIG. 10 is an exploded view of the lower toolholder according to an embodiment of the invention;

fig. 11 is a schematic structural view of a cutter according to an embodiment of the present invention.

Reference numerals:

the broaching machine comprises a broaching machine main body 100, a cutter 101, a first conical surface 1011, a ring groove 1012, a second conical surface 1013, a guide rod 110, a cutter lifting device 120, an upper cutter holder 121, a third driving piece 122, an upper sliding plate 123 and a protection cabinet 130;

the lower tool holder 200, the first driving piece 201, the main tool holder body 210, the mounting hole 211, the guide hole 212, the avoiding groove 213, the step surface 214, the threaded hole 215, the locking screw 216, the annular groove 217, the anti-loosening iron wire 218, the jaw 220, the third conical surface 221, the fourth conical surface 222, the positioning conical sleeve 230, the conical hole 231, the elastic mechanism 240, the connecting pin 241, the spring 242, the driving mechanism 250, the sliding sleeve 251, the sixth driving piece 252, the fifth conical surface 253, the shifting fork 254 and the locking block 260;

a worktable 300, a slide hole 301, a support base plate 310, a first guide rail 311, a connecting seat 320, and a connecting hole 321;

a second driving member 400;

the pressing device 500, the fourth driving member 510, the pressing member 520, the pressing ring 530, the flange 531, the water passing channel 532, the pressing plate 540, the locking block 541, the second guide rail 550, the sliding plate 560, the caulking groove 561, the through hole 562, the lock seat 563, the abutting member 570, the water passing groove 571, the water inlet pipe 572, the limiting member 580, the second locking mechanism 590, the limiting plunger 591, the locking rod 592, the locking head 593, the locking hole 594, and the locking nut 595;

the device comprises a transferring component 600, a positioning structure 601, a transferring frame 610, a connecting rod 611, a connecting frame 612, an inserting hole 6121, a mounting position 6122, a material pushing plate 613, a supporting seat 620, an orientation groove 621, a matching surface 622, a limiting plate 630, a tightening screw 640 and a first locking mechanism 650;

and a fifth driver 700.

Water storage cover 800, water storage cavity 801 and water outlet gap 802.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper and lower directions, is the orientation or positional relationship shown on the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore should not be construed as limiting the present invention.

In the description of the present invention, a plurality means two or more. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 and 2, the utility model discloses a spiral internal broaching machine of embodiment includes: a broaching machine body 100, a worktable 300 and two second driving pieces 400.

The lower part of the broaching machine main body 100 is provided with a lower tool holder 200 for clamping the tool 101, the tool 101 is clamped on the lower tool holder 200 and then is in a vertical state, the lower tool holder 200 is connected with a first driving piece 201 for driving the tool 101 to rotate around the vertical central axis of the tool, and the broaching machine main body 100 is provided with two guide rods 110 which extend vertically.

The worktable 300 is used for supporting and fixing a workpiece and vertically aligning the workpiece with the lower tool holder 200, and the worktable 300 is provided with two slide holes 301 which are respectively matched with the two guide rods 110 in a sliding manner.

The two second driving members 400 are connected with the workbench 300, and are used for applying a vertical driving force to the workbench 300 so as to enable the workbench 300 to vertically slide along the guide rod 110, so as to drive the workpiece to vertically move, and the first driving member 201 is matched to drive the cutter 101 to rotate, so that internal spiral broaching on the workpiece can be realized, and it should be noted that the two second driving members 400 synchronously work; in addition, it is understood that the work table 300 has an aperture for the escape tool 101 to pass through.

The two guide rods 110 are symmetrically arranged relative to the rotation central axis of the cutter 101, the two second driving parts 400 are also symmetrically arranged relative to the rotation central axis of the cutter 101, the central axes of the two guide rods 110, the rotation central axis of the cutter 101 (corresponding to the workpiece processing stress center), and the two stress centers of the workbench 300 corresponding to the two second driving parts 400 are coplanar, so that a highly symmetrical layout with five coplanar centers is formed, and during processing, the guide rods 110 on two opposite sides of the workpiece processing stress center and force arms formed between the second driving parts 400 and the workpiece processing stress center can be mutually offset, namely, unstable factors caused by overturning moment are eliminated.

The utility model discloses broaching machine in spiral, through setting up two second driving piece 400 drive workstation 300 lifts, set up two guide arms 110 and be the direction of workstation 300, and make two second driving piece 400 set up for the rotation center axis symmetry of cutter 101, make two guide arms 110 set up for the rotation center axis symmetry of cutter 101, and make two guide arms 110's the central axis, cutter 101's rotation center axis (corresponding work piece processing atress center), two atress centers that workstation 300 corresponds two second driving piece 400 are all coplane, thereby form five coplane highly symmetrical overall arrangements of heart, make the arm of force that forms between the two contralateral guide arms 110 of work piece processing atress center and second driving piece 400 and the work piece processing atress center offset each other man-hour, thereby discrete rate when reducing the broaching greatly, the machining precision and the stability of work piece have been improved.

In some specific embodiments, as shown in fig. 1 and 2, the second driving member 400 employs a heavy-duty ball screw pair and a servo motor, the nut of the heavy-duty ball screw pair is mounted on the table 300, and five centers of two screws of the two heavy-duty ball screw pairs, the rotation central axis of the tool 101, and the central axes of the two guide rods 110 are coplanar; two connecting seats 320 are arranged on the workbench 300, connecting holes 321 for mounting nuts of heavy-load ball screw pairs are arranged on the connecting seats 320, and it can be understood that the central axes of the two connecting holes 321, the central axis of a hole position through which the cutter 101 passes through the workbench 300 and the central axes of the two sliding holes 301 on the workbench 300 are coplanar.

Further, as shown in fig. 1, the broaching machine body 100 is provided with a protection cabinet 130, and the worktable 300 and the two second driving members 400 are both located in the protection cabinet 130.

Referring to fig. 1, it can be understood that a tool lifting device 120 is disposed on an upper portion of the broaching machine body 100, the tool lifting device 120 includes an upper tool holder 121 and a third driving member 122, the third driving member 122 is used for driving the upper tool holder 121 to move vertically, the upper tool holder 121 can clamp the top of the tool 101 and drive the tool 101 to move vertically, the lower tool holder 200 is vertically aligned with the upper tool holder 121, and both the lower tool holder 200 and the upper tool holder 121 can clamp or release the tool 101, specifically, the upper tool holder 121 is mounted on an upper sliding plate 123, the upper sliding plate 123 is connected to an output end of the third driving member 122, and the upper sliding plate 123 is in sliding fit with the guide rod 110. It is understood that the third driving member 122 can be a driving assembly as disclosed in the patent application No. CN203010920635.9, or other driving types known in the art, which will not be described in detail herein.

Specifically, the workflow of this embodiment is as follows:

before machining, the upper tool holder 121 moves to the highest position, the workbench 300 moves to the lowest height, feeding is completed, the tool 101 is clamped on the upper tool holder 121, then the third driving piece 122 is used for driving the upper tool holder 121 to move downwards, penetrates through a workpiece (a tool shank penetrates through) on the workbench 300 and is inserted into the lower tool holder 200, and then the lower tool holder 200 holds the bottom end of the tool 101, and machining is started.

During machining, the first driving part 201 drives the tool 101 to rotate, meanwhile, the second driving part 400 drives the workbench 300 to ascend so as to perform spiral broaching on a workpiece, when the workbench 300 ascends to be about to touch the upper tool holder 121, the third driving part 122 drives the upper tool holder 121 to move upwards so as to avoid the workpiece, and the workbench 300 continuously ascends until the workbench moves to the upper side of the tool 101 so as to complete machining.

After the machining is finished, the workpiece is blanked, after the blanking is finished, the workbench 300 is made to move downwards and reset, the upper tool holder 121 clamps the tool 101 again, meanwhile, the lower tool holder 200 loosens the tool 101, and the lower tool holder 200 drives the tool 101 to move upwards and reset to wait for the next machining period.

It can be understood that, during broaching, a workpiece needs to move from bottom to top relative to the tool 101, if the tool 101 is directly clamped by the lower tool 101, loading is inconvenient, and after the tool lifting device 120 is arranged, the workbench 300 can move to the lowest position, the upper tool holder 121 clamps the tool 101, the tool 101 is positioned on the upper side of the workbench 300, loading is then carried out, the lower tool holder 200 is moved downwards to enable the tool shank of the tool 101 to penetrate through the workpiece and be inserted into the lower tool holder 200, clamping is carried out by the lower tool holder 200, then the tool 101 is rotated, and meanwhile, the workbench 300 drives the workpiece to move upwards to carry out spiral broaching, and loading is convenient.

Referring to fig. 2 to 4, it can be understood that the table 300 is provided with a pressing device 500 and a transfer assembly 600, the pressing device 500 is provided on the upper side of the table 300, the pressing device 500 includes a fourth driving member 510 and a pressing member 520 connected to an output end of the fourth driving member 510, and in particular, the fourth driving member 510 is used for driving the pressing member 520 to move up and down. It is contemplated that fourth drive member 510 may be a pneumatic cylinder or a hydraulic cylinder.

The transfer assembly 600 is used for placing workpieces, the transfer assembly 600 is provided with a positioning structure 601 for transversely positioning the workpieces to prevent the workpieces from transversely moving, the transfer assembly 600 can be arranged on the workbench 300 in a front-back sliding mode and connected with a fifth driving piece 700 for driving the workbench to slide in the front-back mode to convey the workpieces, the transfer assembly 600 can receive the workpieces from the front side and the back side of the pressing device 500, namely, the workpieces can be loaded and unloaded from the front end and the back end, it can be understood that automatic equipment can be arranged on one of the front side and the back side of the pressing device 500 to automatically load and unload the workpieces, the other side of the front side and the back side of the pressing device is used for manual loading and unloading, when the automatic equipment is damaged to maintain the automatic equipment, the other side of the automatic equipment can be manually loaded and unloaded, the production efficiency is improved, and the reduction of the automatic equipment is avoided. It is contemplated that fifth drive member 700 may be a rodless cylinder assembly or a motor screw assembly.

It should be noted that, the positioning structure 601 needs to be configured to match with a workpiece, for example, when an annular workpiece is processed, the positioning structure 601 may be a plurality of positioning pillars arranged circumferentially, and the positioning structure 601 may have a plurality of configuration forms, which is not described herein.

The transfer assembly 600 can slide to the lower side of the pressing device 500, the pressing piece 520 is vertically aligned with the workpiece, meanwhile, the fourth driving piece 510 can drive the pressing piece 520 to vertically move so as to press or release the workpiece, the pressing piece 520 can limit the vertical jumping of the workpiece when pressing the workpiece, and meanwhile, the workpiece can be prevented from rotating, so that the machining precision can be improved; obviously, hole sites for the vertical passage of the tool 101 are provided on the work table 300, the pressing member 520 and the transferring assembly 600 to avoid interference.

It can be understood that, through set up on workstation 300 and transfer subassembly 600, closing device 500, it can place and transport work piece to closing device 500 downside to transfer subassembly 600, closing device 500 can compress tightly the work piece, thereby can prevent to add the work piece activity man-hour, in order to improve the machining precision, it can receive the work piece in closing device 500 front and back both sides to transfer subassembly 600 in addition, thereby when the automatic unloading equipment maintenance of going up of one side, can follow the manual unloading of opposite side, thereby can avoid the shut down line, improve production efficiency.

It is anticipated that a sensing assembly is disposed between the worktable 300 and the transfer assembly 600 for sensing the position of the transfer assembly 600 and controlling the fifth driving member 700 to stop driving through the controller, so that the transfer assembly 600 can stop at the corresponding region (processing region or loading/unloading region), and the sensing assembly may have various structural forms, for example, a sensing block and a sensing switch are adopted to cooperate, which is a common structure in the prior art and is not described herein. In addition, in order to stop the transfer assembly 600 stably, a buffer device may be further disposed to buffer the transfer assembly 600, for example, the buffer may be matched with the buffer block, or may be in other forms, which is a common structure in the prior art and is not described herein in detail.

Referring to fig. 2 to 4, it can be understood that the transfer assembly 600 includes a transfer frame 610 and a support seat 620 capable of sliding synchronously, the transfer frame 610 is connected to an output end of the fifth driving member 700, the support seat 620 is detachably disposed on the transfer frame 610, the support seat 620 is used for supporting a workpiece, and the positioning structure 601 is disposed on the support seat 620, by disposing the transfer assembly 600 separately, the support seat 620 is used for supporting a workpiece, so that when different workpieces are required to be processed, only the support seat 620 is required to be replaced, the entire transfer assembly 600 does not need to be replaced, the operation is simpler, and the wire stop time can be reduced.

Referring to fig. 2, 3 and 5, it can be understood that the workbench 300 is provided with a supporting bottom plate 310 extending forward and backward, the supporting bottom plate 310 is provided with a first guide rail 311 extending forward and backward, the lower surface of the supporting base 620 is attached to the upper surface of the supporting bottom plate 310, the supporting base plate 310 supports the limiting supporting base 620, the supporting base 620 is further provided with a directional groove 621 matched with the first guide rail 311, specifically, the first guide rail 311 is matched with the directional groove 621 in cross-sectional shape and size and is square, the first guide rail 311 is embedded into the directional groove 621, and the directional groove 621 is used for limiting the left and right displacement of the supporting base 620 and guiding the supporting base 620 in a forward and backward sliding manner; it is used for propping up spacing limiting plate 630 with supporting seat 620 upper end to transfer to be equipped with on the frame 610, with the vertical spacing supporting seat 620 of cooperation supporting baseplate 310, it all is equipped with screws 640 to transfer frame 610 in both sides around supporting seat 620, two screws 640 all wear to locate to transfer frame 610 along the fore-and-aft direction screw thread, two screws 640 are used for respectively with supporting seat 620 around both ends offset, displacement around with restriction supporting seat 620, thereby can be with supporting seat 620 relative fixation transfer frame 610, make the two can the synchronous slip, simple structure and practicality.

Referring to fig. 2, holes for the tool 101 to pass through are formed in the supporting base plate 310 and the worktable 300, and the first guide rail 311 is interrupted at the holes for the tool 101 to pass through in the supporting base plate 310, so as to avoid interference.

Referring to fig. 3 and 5, it can be understood that the transfer frame 610 is provided with a connecting rod 611, a connecting frame 612, and two material pushing plates 613, the connecting rod 611 and the connecting frame 612 are respectively disposed at the front and rear sides of the supporting base 620, and the connecting rod 611 and the connecting frame 612 are both provided with a limiting plate 630 and a tightening screw 640; the two material pushing plates 613 are arranged at left and right intervals, specifically, in this embodiment, two material pushing plates 613 are arranged at left and right intervals, and the two material pushing plates 613 are respectively connected with the output ends of the two fifth driving members 700; furthermore, two ends of the connecting rod 611 are respectively connected to the ends of the two material pushing plates 613, one end of the connecting frame 612 is rotatably connected to the middle of one of the material pushing plates 613, and the rotation central axis extends forward and backward, i.e. the rotation central axis extends in the same direction as the first guide rail 311, and the other end of the connecting frame 612 is locked to the middle of the other material pushing plate 613 through the first locking mechanism 650, and the first locking mechanism 650 can elastically move to unlock the connecting frame 612, so that the connecting frame 612 can rotate to avoid the forward and backward sliding path of the supporting seat 620, it can be understood that when the supporting seat 620 needs to be replaced, the first locking mechanism 650 can elastically move to unlock the connecting frame 612, then the connecting frame 612 can rotate to avoid the forward and backward sliding path of the supporting seat 620, and then the supporting seat 620 can slide along the first guide rail 311, so that the supporting seat 620 is separated from the lower side of the limiting plate 630 on the connecting rod 611, and the supporting seat 620 can be taken out upward, and the operation is quick and convenient.

In some specific embodiments, the first locking mechanism 650 is a reset knob plunger, and is elastically and movably installed on the material pushing plate 613 back and forth, one end of the connecting frame 612 is provided with a through-going insertion hole 6121, the reset knob plunger is partially inserted into the insertion hole 6121 to limit the rotation of the connecting frame 612, and when the connecting frame 612 needs to be rotated, the reset knob plunger is pulled to be disengaged from the insertion hole 6121, so that the structure is simple, and the operation is very convenient.

Referring to fig. 3 to 5, it can be understood that the transfer assembly 600 has a first assembly state and a second assembly state, when the transfer assembly 600 is in the first assembly state, the connecting rod 611 is detachably connected to the front ends of the two material pushing plates 613, when the transfer assembly 600 is in the second assembly state, the connecting rod 611 is detachably connected to the rear ends of the two material pushing plates 613, and when the transfer assembly 600 is in the first assembly state or the second assembly state, the supporting seats 620 are respectively installed and limited between the connecting rod 611 and the connecting frame 612, specifically, when the transfer assembly 600 is in the first assembly state and the second assembly state, the supporting seats 620 are respectively located at the front and rear sides of the connecting frame 612, that is, the supporting seats 620 in the second assembly state are shifted backward by a distance relative to the supporting seats 620 in the first assembly state, which is provided that the maximum driving stroke of the fifth driving member 700 can be small, so as to facilitate the overall layout.

It can be understood that if the transfer assembly 600 is maintained in an assembly state, in order to satisfy loading and unloading on the rear side of the pressing member 520, the maximum driving stroke of the fifth driving member 700 must ensure that the supporting seat 620 can move to the rear side of the pressing member 520, so as to avoid interference of loading and unloading, and in the embodiment, the front and rear positions of the connecting rod 611 and the supporting seat 620 are changed by switching between the two assembly states, so that the driving stroke from the position right below the pressing member 520 to the rear side of the pressing member 520 can be reduced.

Specifically, the connecting rod 611 is connected to the material pushing plate 613 through a fastener, corresponding hole sites for connection are provided at both the front and rear ends of the material pushing plate 613, and the connecting rod 611 is symmetrical when mounted at the front end of the material pushing plate 613 with respect to the connecting rod 611 when mounted at the rear end of the material pushing plate 613.

Further, as shown in fig. 3 and 5, two mounting locations 6122 are symmetrically arranged on the front side and the rear side of the connecting frame 612, and both can be used for mounting the limit plate 630 and tightening the screw 640, the two mounting locations 6122 are respectively used when the transfer assembly 600 is in the first assembly state and the second assembly state to limit the supporting seat 620, both mounting locations 6122 are provided with screw holes for mounting the limit plate 630, and are welded with nuts for mounting the tightening screws 640.

In some specific embodiments, referring to fig. 2, 6, and 7, the pressing member 520 is provided with a pressing ring 530 and a pressing plate 540, the pressing ring 530 is detachably disposed on the lower side of the pressing plate 540, the lower surface of the pressing ring 530 is used for abutting against a workpiece, the pressing plate 540 is connected to the output end of the fourth driving member 510, and the pressing ring 530 and the pressing plate 540 are separately disposed, so that when different parts need to be processed, only the pressing ring 530 needs to be replaced without disassembling and assembling the pressing plate 540, the disassembling and assembling are more convenient, and the fourth driving member 510 can be prevented from being damaged during the disassembling and assembling.

In some specific embodiments, as shown in fig. 6 to 8, a second guide rail 550 fixedly connected to the pressing plate 540 is disposed on a lower side of the pressing plate 540, a sliding plate 560 is disposed on the second guide rail 550 and can slide back and forth, a space is left between the sliding plate 560 and the pressing plate 540, a recessed groove 561 is disposed on an upper surface of the sliding plate 560, a through hole 562 is disposed on a bottom wall of the recessed groove 561, a flange 531 is disposed at an upper end of the pressing ring 530, the pressing ring 530 is disposed through the through hole 562, and the flange 531 is embedded in the recessed groove 561.

Furthermore, the pressing plate 540 is provided with an abutting member 570 abutting against the upper end of the pressing ring 530 to limit the upward displacement of the pressing ring 530, the pressing plate 540 is further provided with a limiting member 580 abutting against the front end of the sliding plate 560 to limit the upward displacement of the pressing ring 530, a second locking mechanism 590 is provided between the pressing plate 540 and the sliding plate 560 to lock the sliding plate 560 to limit the backward sliding relative to the second guide rail 550, so that the sliding plate 560 is fixed relative to the pressing plate 540, and in addition, the second locking mechanism 590 can unlock the sliding plate 560, so that the sliding plate 560 and the pressing ring 530 can slide to be separated from the second guide rail 550, and the pressing ring 530 can be replaced conveniently. It should be noted that, in this embodiment, the limiting member 580 is used for limiting the sliding of the sliding plate 560 forward, and the second locking mechanism 590 is used for limiting the sliding of the sliding plate 560 backward, while in other embodiments, the limiting member 580 and the second locking mechanism 590 may be interchanged to meet the requirement of limiting the sliding plate 560.

Specifically, as shown in fig. 6 and 7, the second locking mechanism 590 is provided with a stopper plunger 591 and a locking rod 592, the lower end of the pressing plate 540 is provided with a locking block 541, the stopper plunger 591 partially protrudes out of the front end of the locking block 541, the rear end of the sliding plate 560 is provided with a lock holder 563, the locking rod 592 is movably inserted into the lock holder 563, the front end of the locking rod 592 is provided with a locking head 593, the locking head 593 is provided with a locking hole 594, the stopper plunger 591 is inserted into the locking hole 594, the locking rod 592 is screwed with a locking nut 595 for abutting against the rear end of the lock holder 563, while the locking head 593 is abutted against the locking block 541, and the stopper plunger 591 is kept in a state of being inserted into the locking hole 594 so as to limit the rearward displacement of the sliding plate 560, when the sliding plate 560 needs to be removed, the stopper 595 is unscrewed, then the locking rod 592 is slid to separate the stopper 591 from the locking hole 594, then the locking rod 592 is rotated so that the locking head 593 is extended path forward and the second guide rail 550 can be removed, the sliding plate 560, which is simple in structure and convenient to operate.

Further, as shown in fig. 6 and 7, the pressing member 520 is provided with a cleaning structure for cleaning the lower surface of the pressing ring 530, so as to prevent the lower surface of the pressing ring 530 from being uneven and damaging the surface of the workpiece, the cleaning structure includes a water storage cover 800, the water storage cover 800 is connected to the periphery of the bottom end of the pressing ring 530, a water storage cavity 801 is formed between the water storage cover and the pressing ring 530, a water outlet gap 802 is reserved between the inner side of the water storage cover 800 and the lower surface of the pressing ring 530 for supplying water to flow out and clean the lower surface of the pressing ring 530, the upper surface of the pressing ring 530 is provided with a water passage 532 extending downwards to the water storage cavity 801, the lower surface of the abutting member 570 is provided with a water passing groove 571, the upper surface of the pressing ring 530 seals the water passing groove 571, the water passing groove 532 is communicated with the water passage 532, the water inlet pipe 572 is connected with the water passing groove 571, so that cleaning fluid can be conveyed along the path of the water inlet pipe 572-the water passing groove 571-the water passage 532-the water passage 801-the water storage cavity 801-the water outlet gap 802 to clean the lower surface of the pressing ring 530.

Referring to fig. 9 to 11, it can be understood that the end of the tool 101 is provided with a first tapered surface 1011, the neck of the tool 101 is provided with a ring groove 1012, one end of the ring groove 1012 near the first tapered surface 1011 is provided with a second tapered surface 1013, and the lower tool holder 200 comprises: a main cutter body 210, at least one group of claws 220 and a positioning taper sleeve 230.

The center of the main cutter body 210 is provided with a mounting hole 211 for mounting the cutter 101, the inner diameter of the mounting hole 211 is the same as the outer diameter of the part of the cutter 101 inserted into the mounting hole 211, and one end of the mounting hole 211 for inserting the cutter 101 is provided with an internal spline for being in key connection with the cutter 101; obviously, the cutter 101 is provided with external splines to match with the internal splines of the mounting hole 211, so that torque is transmitted through key connection, and compared with the traditional flat force transmission, the connection is more stable, and larger torque can be transmitted. Specifically, the bottom end of the main tool body 210 is connected to the output end of the first driving member 201, the first driving member 201 is installed in the broaching machine main body 100, the first driving member 201 drives the main tool body 210 to rotate so as to drive the tool 101 to rotate, and the first driving member 201 can adopt a servo motor.

The group of clamping jaws 220 comprises two clamping jaws 220, the two clamping jaws 220 are symmetrically arranged relative to the central axis of the mounting hole 211, the clamping jaws 220 can be arranged through the main cutter body 210 along the radial direction of the mounting hole 211 in a position-adjustable manner, and one end, facing the mounting hole 211, of each clamping jaw 220 is provided with a third conical surface 221 for fitting with the second conical surface 1013, namely the second conical surface 1013 and the third conical surface 221 have the same taper; specifically, the peripheral wall of the mounting hole 211 is provided with guide holes 212, the guide holes 212 penetrate through the mounting hole 211 radially outwards, the number of the guide holes 212 is the same as that of the clamping jaws 220, the clamping jaws 220 are slidably and adjustably mounted in the guide holes 212, the third conical surface 221 is located on one side of the clamping jaws 220 away from the insertion end of the mounting hole 211, and obviously, the clamping jaws 220 can be positionally adjusted to avoid the insertion path of the tool 101.

The positioning taper sleeve 230 is installed in the installation hole 211, specifically, the positioning taper sleeve 230 is located on one side of the clamping jaw 220 away from the insertion end of the installation hole 211, an inward narrowing taper hole 231 is arranged on the end face of the positioning taper sleeve 230 facing the clamping jaw 220, and the taper of the hole wall of the taper hole 231 is the same as that of the first conical surface 1011 and is used for fitting with the first conical surface 1011.

The position of the clamping jaw 220 can be adjusted along the radial direction of the mounting hole 211 until the third conical surface 221 is tightly attached to the second conical surface 1013, and the first conical surface 1011 is kept tightly attached to the hole wall of the conical hole 231, so that the cutter 101 can be axially and radially limited. It will be appreciated that the jaws 220 can be adjusted to an extended path out of the way of the mounting holes 211 to facilitate insertion or extraction of the tool 101.

Specifically, when the toolholder 200 holds the tool 101, the jaw 220 is first adjusted to avoid the extending path of the mounting hole 211, the shank of the tool 101 is inserted into the mounting hole 211, the first tapered surface 1011 is attached to the hole wall of the tapered hole 231 of the positioning taper sleeve 230, then the jaw 220 is adjusted, the third tapered surface 221 of the jaw 220 is attached to the second tapered surface 1013 of the tool 101, and the first tapered surface 1011 is attached to the hole wall of the tapered hole 231.

It can be understood that, in the present embodiment, by providing the pawl 220 and the positioning taper sleeve 230, and providing the third taper surface 221 and the tapered hole 231, the third taper surface 221 is abutted against the second taper surface 1013 of the tool 101, and the hole wall of the tapered hole 231 is abutted against the first taper surface 1011, so as to eliminate the axial gap and the radial gap of the tool 101, achieve the radial centering thereof, prevent the axial play or the radial play thereof, and thereby improve the broaching precision of the tool 101.

In some embodiments, the jaws 220 are provided in two sets and are evenly circumferentially distributed about the central axis of the mounting hole 211.

Referring to fig. 9 and 10, it can be understood that the lower tool holder 200 further comprises an elastic mechanism 240 and a driving mechanism 250, the elastic mechanism 240 is used for applying an elastic force to the clamping jaws 220 radially outwards along the mounting holes 211, the driving mechanism 250 is used for driving the clamping jaws 220 to move radially inwards along the mounting holes 211, the driving mechanism 250 can be matched with the elastic mechanism 240 to realize the position adjustment of the clamping jaws 220 along the radial direction of the mounting holes 211, specifically, when the tool 101 needs to be clamped, the clamping jaws 220 are driven to move towards the mounting holes 211 through the driving mechanism 250 until the third conical surface 221 is tightly attached to the second conical surface 1013 of the tool 101, the driving is stopped, the clamping jaws 220 are fixed, when the tool 101 needs to be taken out, the driving mechanism 250 releases the fixation of the clamping jaws 220, the clamping jaws 220 move away from the mounting holes 211 through the elastic force of the elastic mechanism 240, and the automatic adjustment of the positions of the clamping jaws 220 is realized through the arrangement.

Specifically, the peripheral wall of the main clamp body 210 is provided with an avoiding groove 213 on one side of the jaw 220, the avoiding groove 213 is communicated with the guide hole 212, a plurality of elastic mechanisms 240 are arranged corresponding to the jaw 220, the number of the elastic mechanisms 240 is the same as that of the jaw 220, each elastic mechanism 240 comprises a connecting pin 241 and a spring 242, each connecting pin 241 is axially and fixedly inserted in the jaw 220 along the mounting hole 211, the connecting pin 241 is partially located in the avoiding groove 213, one end of each spring 242 abuts against the inner side wall of the avoiding groove 213, the other end of each spring is connected with the corresponding connecting pin 241 and is used for applying an elastic force outwards in the radial direction of the mounting hole 211 to the corresponding connecting pin 241, so that the jaws 220 can be driven by the springs 242 to move outwards in the radial direction of the mounting hole 211, the corresponding connecting pins 241 can provide mounting and force application positions for the springs 242, and the avoiding grooves 213 provide spaces for the movement of the corresponding connecting pins 241, and the structure is simple and practical.

Referring to fig. 9 and 10, it can be understood that one end of the jaws 220 away from the mounting hole 211 is provided with a fourth tapered surface 222, the driving mechanism 250 includes a sliding sleeve 251 slidably sleeved outside the main clipper body 210 and a sixth driving member 252 for driving the sliding sleeve 251 to slide along the main clipper body 210, obviously, the sliding direction of the sliding sleeve 251 is the same as the extending direction of the mounting hole 211, the inner wall of the sliding sleeve 251 is provided with a fifth tapered surface 253, the fifth tapered surface 253 fits with the fourth tapered surfaces 222 of all the jaws 220, i.e., the fifth tapered surface 253 has the same taper as the fourth tapered surface 222, it can be understood that the sliding sleeve 251 is driven by the sixth driving member 252 to slide away from the tool 101, and the jaws 220 can be pushed to slide towards the mounting hole 211 by the fitting of the fifth tapered surface 253 and the fourth tapered surface 222, and if the jaws 220 are to be retracted, the sliding sleeve 251 is driven by the sixth driving member 252 to slide reversely, which is simple in structure and convenient to use. Specifically, the sliding sleeve 251 is fixedly connected with a shifting fork 254, the shifting fork 254 is used for connecting the sixth driving element 252 to transmit force, and a lifting ring for lifting is arranged on the shifting fork 254; it is contemplated that the sixth driving element 252 may be a cylinder or an air cylinder, and is mounted on the broaching machine body 100. In addition, in the present embodiment, the sliding sleeve 251 can rotate relative to the main clipper body 210.

In some specific embodiments, as shown in fig. 9 and 10, the mounting hole 211 penetrates through the main blade body 210, and the inner wall of the mounting hole 211 is stepped and forms a stepped surface 214, the stepped surface 214 abuts against one end of the positioning taper sleeve 230, where the tapered hole 231 is provided, and a locking block 260 abutting against the other end of the positioning taper sleeve 230 is connected to the mounting hole 211 through an internal thread, that is, the locking block 260 is provided with an external thread, the mounting hole 211 is provided with an internal thread, and the positioning taper sleeve 230 is fixed to the locking block 260 through the stepped surface 214, so that the positioning taper sleeve 230 can be detachably mounted in the mounting hole 211, which is simple in structure and convenient for dismounting and mounting the locking block 260.

In some specific embodiments, referring to fig. 9 and 10, an adjusting washer is disposed between the step surface 214 and the positioning taper sleeve 230, and the adjusting washer is used for compensating for an error in a distance between the positioning taper sleeve 230 and the jaws 220 along the axial direction of the mounting hole 211, so that the third tapered surface 221 can be tightly attached to the second tapered surface 1013, and simultaneously, the wall of the tapered hole 231 can be tightly attached to the first tapered surface 1011.

In some specific embodiments, referring to fig. 9 and 10, the peripheral wall of the main blade body 210 is provided with a plurality of threaded holes 215 penetrating through the mounting hole 211 to the mounting hole 211 in the radial direction, the threaded holes 215 are internally threaded with locking screws 216, the inner ends of the locking screws 216 abut against the outer wall of the locking block 260 to prevent the locking block 260 from loosening, and the structure is more stable, it can be understood that in order to prevent the locking screws 216 from damaging the outer threads of the locking block 260, the inner ends of the locking screws 216 are provided with copper pads. It should be noted that the inner end of the locking screw 216 is the end facing the mounting hole 211.

Further, referring to fig. 9 and 10, the circumferential wall of the main clipper body 210 is provided with an annular groove 217, the annular groove 217 intersects with the plurality of threaded holes 215, a locking iron wire 218 is arranged in the annular groove 217, the locking iron wire 218 abuts against the outer end of the locking screw 216 to prevent the locking screw 216 from loosening, and a double-layer safety is adopted to prevent the locking block 260 from loosening, so that the structure is more stable.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims (10)

1. A helical broaching machine, comprising:

the broaching machine comprises a broaching machine main body (100), wherein the lower part of the broaching machine main body is provided with a lower tool holder (200) for clamping a tool (101), the lower tool holder (200) is connected with a first driving piece (201) for driving the tool (101) to rotate around a vertical central axis of the tool, and the broaching machine main body (100) is provided with two guide rods (110) which extend vertically;

the workbench (300) is used for supporting and fixing a workpiece and enabling the workpiece to be vertically aligned with the lower tool holder (200), and the workbench (300) is provided with two sliding holes (301) which are respectively matched with the two guide rods (110) in a sliding mode;

two second driving pieces (400), which are connected with the workbench (300) and are used for applying a vertical driving force to the workbench (300) so as to enable the workbench to vertically slide along the guide rod (110);

the two guide rods (110) and the two second driving parts (400) are symmetrically arranged relative to the rotation central axis of the cutter (101), and the central axes of the two guide rods (110), the rotation central axis of the cutter (101) and two force-bearing centers of the workbench (300) corresponding to the two second driving parts (400) are coplanar.

2. The helical broaching machine of claim 1, wherein: the broaching machine is characterized in that a cutter lifting and conveying device (120) is arranged on the upper portion of the broaching machine main body (100), the cutter lifting and conveying device (120) comprises an upper cutter holder (121) and a third driving piece (122), the third driving piece (122) is used for driving the upper cutter holder (121) to vertically move, the upper cutter holder (121) can clamp the top of the cutter (101) and drive the cutter (101) to vertically move, and the lower cutter holder (200) and the upper cutter holder (121) can both loosen the cutter (101).

3. The helical broaching machine of claim 1, wherein: the workbench (300) is provided with a pressing device (500) and a transferring assembly (600), the pressing device (500) comprises a fourth driving part (510) and a pressing part (520) connected to the output end of the fourth driving part, the transferring assembly (600) is used for placing a workpiece and is provided with a positioning structure (601) used for transversely positioning the workpiece, the transferring assembly (600) is arranged on the workbench (300) in a front-back sliding mode and is connected with a fifth driving part (700) used for driving the transferring assembly to slide in the front-back sliding mode, and the transferring assembly (600) can receive the workpiece on the front side and the back side of the pressing device (500); the transfer assembly (600) can slide to the lower side of the pressing device (500) and enables the pressing piece (520) to be vertically aligned with the workpiece, and meanwhile, the fourth driving piece (510) can drive the pressing piece (520) to move vertically to press or release the workpiece.

4. The helical broaching machine of claim 3, wherein: the transfer assembly (600) comprises a transfer frame (610) and a supporting seat (620) which can slide synchronously, the transfer frame (610) is connected to the output end of the fifth driving element (700), the supporting seat (620) is detachably arranged on the transfer frame (610), the supporting seat (620) is used for supporting a workpiece, and the positioning structure (601) is arranged on the supporting seat (620).

5. The helical broaching machine of claim 4, wherein: supporting baseplate (310) that extends around workstation (300) is equipped with, first guide rail (311) that extends around being equipped with on supporting baseplate (310), supporting seat (620) lower surface subsides are located supporting baseplate (310) upper surface, and be equipped with first guide rail (311) complex directional groove (621), it is used for with be equipped with on frame (610) supporting seat (620) upper end offsets spacing limiting plate (630), transfer frame (610) in both sides all are equipped with around supporting seat (620) and screw up screw (640), two screw up screw (640) all wear to locate along the fore-and-aft direction screw thread transfer frame (610), be used for respectively with both ends offset around supporting seat (620).

6. The helical broaching machine of claim 5, wherein: the conveying frame (610) is provided with a connecting rod (611), a connecting frame (612) and two material pushing plates (613), the connecting rod (611) and the connecting frame (612) are arranged on the front side and the rear side of the supporting seat (620) respectively and are provided with the limiting plate (630) and the tightening screw (640), the two material pushing plates (613) are arranged at left and right sides at intervals, two ends of the connecting rod (611) are connected with the end portions of the two material pushing plates (613) respectively, one end of the connecting frame (612) is connected to the middle of one of the material pushing plates (613) in a rotating mode, the rotating central axis extends forwards and backwards, the other end of the connecting frame is locked to the middle of the other material pushing plate (613) through a first locking mechanism (650), and the first locking mechanism (650) can move elastically to release locking of the connecting frame (612) so that the connecting frame (612) can rotate to avoid a front-back sliding path of the supporting seat (620).

7. The helical broaching machine of claim 6, wherein: the transfer assembly (600) has a first assembly state and a second assembly state, when the first assembly state is reached, the connecting rod (611) is detachably connected to the front ends of the two material pushing plates (613), when the second assembly state is reached, the connecting rod (611) is detachably connected to the rear ends of the two material pushing plates (613), and when the transfer assembly (600) is in the first assembly state or the second assembly state, the supporting seat (620) is mounted and limited between the connecting rod (611) and the connecting frame (612).

8. The helical broaching machine of claim 1, wherein: cutter (101) tip is equipped with first conical surface (1011), cutter (101) neck is equipped with annular (1012), annular (1012) are close to the one end of first conical surface (1011) is equipped with second conical surface (1013), lower cutter holder (200) includes:

the main cutter clamping body (210) is provided with a mounting hole (211) for mounting the cutter (101) at the center;

at least one group of clamping jaws (220), wherein one group of clamping jaws (220) comprises two clamping jaws (220) symmetrically arranged relative to the central axis of the mounting hole (211), the clamping jaws (220) can penetrate through the main clamp body (210) along the radial direction of the mounting hole (211) in a position-adjustable manner, and one end, facing the mounting hole (211), of each clamping jaw (220) is provided with a third conical surface (221) for being attached to the second conical surface (1013);

the positioning taper sleeve (230) is mounted on the mounting hole (211), an inward-narrowing tapered hole (231) is formed in the end face, facing the clamping jaw (220), and the hole wall of the tapered hole (231) is attached to the first conical surface (1011);

the position of the clamping jaw (220) can be adjusted along the radial direction of the mounting hole (211) until the third conical surface (221) is tightly attached to the second conical surface (1013), and the first conical surface (1011) is kept tightly attached to the hole wall of the conical hole (231) so as to limit the cutter (101) axially and radially.

9. The helical broaching machine of claim 8, wherein: the lower tool holder (200) further comprises an elastic mechanism (240) and a driving mechanism (250), wherein the elastic mechanism (240) is used for applying an elastic force to the clamping jaw (220) along the radial direction outwards of the mounting hole (211), and the driving mechanism (250) is used for driving the clamping jaw (220) to move along the radial direction inwards of the mounting hole (211) and can be matched with the elastic mechanism (240) to realize the position adjustment of the clamping jaw (220) along the radial direction of the mounting hole (211).

10. The helical broaching machine of claim 9, wherein: one end, deviating from the mounting hole (211), of the clamping jaw (220) is provided with a fourth conical surface (222), the driving mechanism (250) comprises a sliding sleeve (251) which is slidably sleeved on the outer side of the main clamping cutter body (210) and a sixth driving piece (252) which is used for driving the sliding sleeve (251) to slide, a fifth conical surface (253) is arranged on the inner wall of the sliding sleeve (251), and the fifth conical surface (253) is matched and attached to the fourth conical surfaces (222) of all the clamping jaws (220).

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