CN214023897U

CN214023897U - Internal gear fine slotting workpiece rotating tool setting loading and unloading tool

Info

Publication number: CN214023897U
Application number: CN202022698983.4U
Authority: CN
Inventors: 吴家豪; 许家扬; 许友仁
Original assignee: Jinjiang Anhai Liancheng Machinery Co ltd
Current assignee: Jinjiang Anhai Liancheng Machinery Co ltd
Priority date: 2020-11-20
Filing date: 2020-11-20
Publication date: 2021-08-24
Anticipated expiration: 2030-11-20

Abstract

The utility model relates to a rotatory tool setting loading and unloading frock of smart gear shaping work piece of internal gear, including positioning base and locking mechanism and liftout mechanism on it, locking mechanism includes the tapering positioning seat, spline tapering position sleeve, lock nut and compression screw, the tapering positioning seat has been seted up down narrow wide taper hole and post hole, spline tapering position sleeve has the locating surface with taper hole and post hole looks adaptation and is in the spline location tooth at top, but lock nut wears to locate in spline tapering position sleeve and its both ends respectively with spline tapering position sleeve lower terminal surface looks joint, the compression screw thread is worn to locate lock nut and with positioning base circumference axial fixity. The taper positioning seat and the spline taper positioning sleeve can be in press fit to achieve radial positioning and axial positioning only by operating the locking nut, the operation is convenient, the deformation and the abrasion are not easy, and an internal gear workpiece is directly rotated to facilitate alignment and tool setting; in addition, the ejection mechanism is used for discharging the material in a labor-saving manner, the damage to the internal gear workpiece is small, and the efficiency is improved.

Description

Internal gear fine slotting workpiece rotating tool setting loading and unloading tool

Technical Field

The utility model belongs to the technical field of gear machining, concretely relates to rotatory tool setting loading and unloading frock of smart gear shaping work piece of internal gear.

Background

The machining process of the gear comprises the following steps: the gear blank processing, the tooth surface processing, the heat treatment process and the fine processing of the tooth surface, and the fine processing mode comprises turning, rolling, gear shaping and the like. The gear shaping, process the profile of tooth such as gear, rack with the gear shaping cutter promptly, the processing of common internal gear in market generally is in the bottom fixed gear shaping sword of main shaft, then does up-and-down reciprocating motion through the main shaft for the gear shaping sword is with gear inner ring processing play tooth, and rotates the main shaft gradually, makes the gear shaping sword pass through the tooth and drives the gear rotation, carries out the processing of tooth one by one. The key steps in the gear shaping process are workpiece fixing and alignment of the gear shaping cutter and the workpiece, which seriously affect the precision of the gear.

The existing gear shaping machines mostly adopt clamps to clamp workpieces, the clamps are repeatedly disassembled and assembled, the risk of clamping looseness exists, and the alignment precision of a cutter and the workpieces during machining is further influenced.

For example, the patent document (CN 207326107U) discloses a special-shaped deep-hole internal gear slotting clamp, which comprises a base, wherein the base is provided with a positioning hole and a positioning groove, the lower end of a spring expansion sleeve is arranged in the positioning groove, the upper end of the spring expansion sleeve is clamped in a workpiece inner hole, the positioning hole is positioned at the center of the positioning groove, a positioning taper sleeve is arranged in the spring expansion sleeve, the outer wall of the positioning taper sleeve is conical, the inner wall of the positioning taper sleeve is provided with a limit step, a positioning bolt is matched with the positioning hole to be arranged, and the upper part of the positioning bolt is clamped on the limit step, the patent structure is that the workpiece inner hole is sleeved on the spring expansion sleeve, the positioning taper sleeve is manually locked, the positioning taper sleeve moves downwards and extrudes the spring expansion sleeve to automatically expand, the workpiece lower end surface and the positioning hole are used for positioning, but the spring expansion sleeve only rises to open and lock the workpiece, the spline pressure angle is not used for positioning, the positioning precision is not high, and the spring expansion sleeve cannot effectively reset after one end is used, the size is unstable, and the main shaft still needs to be rotated when finding the correct time, and the operation is inconvenient, and piece or coolant liquid easily gets into the conical surface extrusion region, causes the location inaccurate.

For example, chinese published patent document (CN 110625200A) discloses a disc gear shaping clamp, which is fixed on a working table of a gear shaping machine tool through a clamp seat, and comprises: the taper mandrel is fixedly connected with the clamp seat, and the positioning disc and the double-taper-surface spring expansion sleeve are sleeved with the taper mandrel; the lower end face of the positioning plate is attached to the taper mandrel; the double-conical-surface spring expansion sleeve can slide in the conical mandrel and is provided with a plurality of high polymer elastomers; the taper pull rod is arranged on the taper mandrel and is installed in a matched mode with the double-taper-surface spring expansion sleeve; the high polymer elastomer is used for expanding and resetting the double-conical-surface spring expanding sleeve. According to the structure, the double-conical spring expansion sleeve is extruded and expanded on the inner wall of the gear blank by means of hydraulic tension of a piston rod of a hydraulic cylinder and a conical surface of a conical pull rod, a workpiece is tightened, and the blank is fixed. But still have the positioning accuracy not high, the spring cover that rises can not effectively reset after using a period, and the size is unstable, and the pull rod is taut from top to bottom many times and easily appears in the inaccurate problem of location behind the contact surface wearing and tearing. Meanwhile, the main shaft still needs to be rotated when the timing is found, and the operation is inconvenient.

In addition, in the prior art, the gear shaping is generally finished by manual unloading, the internal gear workpiece is made of high-performance steel, the weight is large, the labor intensity is high only by manual unloading, and the spline or the clamp can be damaged by careless deviation.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a rotatory tool setting loading and unloading frock of smart gear shaping work piece of internal gear, it can be high to internal gear work piece radial positioning and axial positioning and positioning accuracy, and convenient operation, difficult wearing and tearing.

In order to realize the purpose of the invention, the technical scheme is as follows:

the tool comprises a positioning base and a locking mechanism arranged on the positioning base, wherein a central stepped hole positioned at the center of the positioning base and supporting bosses distributed on the positioning base outside the central stepped hole in a surrounding manner are arranged on the positioning base, and the top surfaces of the supporting bosses are positioned on the same horizontal plane; the locking mechanism comprises a taper positioning seat, a spline taper positioning sleeve, a locking nut and a compression screw, the taper positioning seat is fixedly arranged in a central stepped hole, a taper hole which is narrow at the bottom and wide at the top is formed in the center of the taper positioning seat, the spline taper positioning sleeve is provided with a positioning surface matched with the taper hole and spline positioning teeth on the outer peripheral surface of the top, a lock hole is formed in the center of the spline taper positioning sleeve in a penetrating mode from top to bottom, the locking nut can be circumferentially and rotatably arranged in the lock hole in a penetrating mode, two ends of the locking nut are respectively connected with the upper end surface and the lower end surface of the spline taper positioning sleeve in a clamping mode, a locking screw hole is formed in the center of the locking nut in a penetrating mode from top to bottom, and the.

Preferably, the top surface of the taper positioning seat is concavely provided with a step surface, a retaining ring is reserved between the step surface and the top end of the taper hole, and an annular groove matched with the retaining ring is formed in the position, corresponding to the retaining ring, of the spline taper positioning sleeve.

Preferably, a chip removal notch is reserved between two circumferentially adjacent supporting bosses, and installation screw holes are respectively formed in the bottom wall of the chip removal notch.

Preferably, the central stepped hole is composed of an upper hole, a middle hole and a lower hole which are coaxially and vertically communicated, the aperture of the upper hole is larger than that of the middle hole, the aperture of the middle hole is larger than that of the lower hole, the inner diameter of the middle hole is not smaller than the outer diameter of the bottom end of the spline taper positioning sleeve, and the taper positioning seat is fixedly installed in the upper hole.

Preferably, the compression screw is sequentially provided with a thread upper section, a key joint middle section and a thread lower section from top to bottom, the thread lower section of the compression screw is locked and fixed at the bottom of the base through a nut, the thread upper section of the compression screw is in threaded connection with the locking screw hole, and the side wall of the lower hole is connected with the key joint middle section through a flat key.

Preferably, lock nut structure top-down is adjustment hexagonal, last fender ring, coaxial cylinder and keeps off the ring down in proper order, coaxial cylinder wears to locate in the lockhole, and coaxial cylinder can freely rotate in the lockhole but is restricted in last fender ring and keep off the ring at axial fixity down, keep off the ring radial bulge down and establish in coaxial cylinder bottom and with spline tapering position sleeve looks joint, go up keep off the ring radial bulge and establish on coaxial cylinder top and with spline tapering position sleeve looks butt, the adjustment hexagonal keeps off the ring top at last and with coaxial cylinder coaxial setting, the equal central trompil of adjustment hexagonal, last fender ring, coaxial cylinder and fender ring down becomes together the locking screw.

Preferably, the top of the compression screw rod is provided with a compression screw hole which is axially extended and arranged, a compression cover is installed in the compression screw hole in a threaded manner, the outer diameter of the compression cover is larger than the outer diameter of the spline taper positioning sleeve, and the cover body seals the small gear ring of the internal gear workpiece and compresses the internal gear workpiece in an installation state.

Preferably, the loading and unloading tool further comprises an ejection mechanism, the ejection mechanism comprises operating parts and ejection assemblies which are respectively and correspondingly arranged in the supporting bosses and driven by the operating parts, and ejection holes for mounting the ejection assemblies are correspondingly arranged on the supporting bosses.

Preferably, each ejection component comprises a threaded ejector rod, an ejector rod sleeve, an outer gear and a threaded inner sleeve, the operating part is an inner gear ring, the inner gear ring is sleeved outside the positioning base and is in meshed connection with each outer gear, the threaded inner sleeve is fixedly arranged in the outer gear, an ejection screw hole penetrates through the center of the threaded inner sleeve from top to bottom, the ejector rod sleeve is fixedly arranged in the ejection hole above the threaded inner sleeve, and the threaded ejector rod is threaded in the ejection screw hole, the upper part of the threaded ejector rod is circumferentially fixed with the ejector rod sleeve and is axially connected with the ejector rod sleeve in a sliding manner.

Preferably, the threaded inner sleeve is higher than the outer gear, a bearing is installed between the top of the threaded inner sleeve and the inner wall of the material ejecting hole, a bearing gasket is clamped above the bearing and the threaded inner sleeve, and the bottom of the ejector rod sleeve abuts against the bearing gasket.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses loading and unloading frock includes the positioning base and locking mechanism on it, be equipped with the support boss of annular distribution on the positioning base and each support the boss top surface on same horizontal plane, the terminal surface of internal gear work piece supports on supporting the boss and the toothlet corresponds the spline locating tooth that meshes locking mechanism with the pressure angle in location and gear shaping processing, and locking mechanism includes the tapering positioning seat, spline tapering locating sleeve, lock nut and compression screw, have the tapering locating surface between spline tapering locating sleeve and the tapering positioning seat, lock nut can rotate circumferentially and install in the lockhole of spline tapering locating sleeve axially fixedly, compression screw thread is worn to locate in lock nut's lock screw and all fix on the positioning base circumferentially axially, only need to operate lock nut, simple action, convenient operation, can make positioning seat tapering and spline tapering locating sleeve pressure tight fit accomplish radial positioning and axial positioning, after the gear shaping machine is operated in place, the position is stable, the locking force is strong, the structural strength of the taper positioning seat and the spline taper positioning sleeve is high, the taper positioning seat and the spline taper positioning sleeve are not easy to deform and long in service life, the taper positioning seat and the spline taper positioning sleeve do not rotate relatively in the gear shaping machining process, the abrasion problem caused by relative friction is effectively solved, the initial position of an internal gear workpiece can be directly adjusted in a rotating mode before locking, the main shaft of the gear shaping machine does not need to be clutched and then the angle of the main shaft is manually adjusted, the alignment is more convenient and rapid, and in the alignment process, the positioning surface of the spline taper positioning sleeve does not rub against the wall surface of the taper positioning seat, so that the radial positioning and axial positioning accuracy in the locking process can be effectively guaranteed; and uncontrollable factors such as friction loss, oil return displacement, improper resetting of the elastic expansion sleeve and the like caused by the traditional method that the hydraulic cylinder drives the pull rod to move up and down can be avoided during locking operation. Therefore, the utility model discloses the smart gear shaping loading and unloading frock positioning accuracy of internal gear is high, difficult wearing and tearing, and the operation is convenient and fast also.

2. The utility model discloses the compression screw top still is equipped with and compresses tightly the screw, after locking, before the gear shaping processing, get and compress tightly lid screw thread installation in compressing tightly the screw, the external diameter that compresses tightly the lid is greater than spline tapering position sleeve external diameter, the lid seals the little ring gear of internal gear work piece and compresses tightly internal gear work piece under the installation state, thereby make internal gear work piece along with location base and locking mechanism synchronous revolution, avoid taking place the skew at the gear shaping in-process, the machining precision is high, and can significantly reduce piece and coolant liquid entering locking mechanism through compressing tightly the lid, be convenient for clear up and used repeatedly frock, it is long when shortening gear shaping machine standby, and the production efficiency is improved.

3. The top surface of the taper positioning seat of the utility model is concavely provided with a step surface, a retaining ring is arranged between the step surface and the top end of the taper hole, and the position of the spline taper positioning sleeve corresponding to the retaining ring is provided with a ring groove matched with the retaining ring, so that on one hand, the contact area between the taper positioning seat and the spline taper positioning sleeve is larger, and the taper positioning seat and the spline taper positioning sleeve are combined more tightly under the locking state, the gear shaping machine and the gear shaping machine rotate synchronously during gear shaping processing, so that the processing is more accurate, on the other hand, the chips or cooling liquid can not flow into the taper hole and the positioning surface to influence the positioning accuracy, the cleaning is more convenient, in addition, the column hole and the check ring also play a role in guiding the spline taper positioning sleeve to lift up and down, so that the phenomenon that partial stress concentration is abraded and deformed due to the deflection of a relative central line between the spline taper positioning sleeve and the locking nut can be avoided, and the sensitivity of driving the spline taper positioning sleeve to lift up and down by the locking nut is ensured.

4. The utility model discloses be equipped with the central shoulder hole that is used for installing locking mechanism on the location base, central shoulder hole is by coaxial and upper and lower intercommunication the last hole of arranging, mesopore and lower hole constitute, the aperture of going up the hole is greater than mesoporous aperture, mesoporous aperture is greater than the aperture of lower hole, the effect of going up the hole lies in installation tapering positioning seat and fixed tapering positioning seat on the location base, the effect of lower hole lies in making locking mechanism and location base keep concentric, mesoporous effect lies in letting out certain space can be completely with tapering positioning seat contact cooperation in order to guarantee spline tapering position sleeve.

5. The utility model discloses loading and unloading frock is still including setting up the liftout mechanism on the base of location, liftout mechanism includes the operating parts and corresponds the setting respectively in supporting the boss and by operating parts driven liftout subassembly, it is provided with the liftout hole that is used for installing the liftout subassembly to correspond on the support boss, can order about the liftout subassembly in step through the operating parts and push up the work piece or descend to reset, it makes the internal gear work piece after the gear shaping processing is accomplished upwards raise and separate mutually with location base and spline tapering position sleeve to push up the work piece, laborsaving and each liftout subassembly goes up and down in step, it is very little to the internal gear work piece damage, unloading efficiency obviously improves, the obvious reduction of intensity of labour.

Drawings

Fig. 1 is the utility model discloses the rotatory tool setting loading and unloading frock schematic diagram of the smart gear shaping work piece of internal gear.

Fig. 2 is a schematic structural diagram of the locking mechanism of the present invention.

Fig. 3 is a top view of the positioning base of the present invention.

Fig. 4 is a sectional view taken along line a-a shown in fig. 3.

Fig. 5 is a cross-sectional view of the taper positioning seat of the present invention.

Fig. 6 is a cross-sectional view of the spline taper positioning sleeve of the present invention.

Fig. 7 is a schematic structural view of the lock nut of the present invention.

Fig. 8 is a schematic view of the structure of the pressing screw rod of the present invention.

Fig. 9 is a schematic structural view of the material ejecting mechanism of the present invention.

Fig. 10 is a schematic view of the ring gear structure of the present invention.

Fig. 11 is a schematic view of the external gear structure of the present invention.

Fig. 12 is a schematic view of the structure of the threaded rod of the present invention.

The labels in the figure are: 100. positioning a base; 11. an upper hole; 12. a mesopore; 13. a lower hole; 14. supporting the boss; 15. chip removal notches; 16. a material ejection hole;

200. a locking mechanism; 21. a taper positioning seat; 22. a spline taper positioning sleeve; 23. locking the nut; 24. a compression screw; 25. a compression cover;

211. a taper hole; 212. a post hole; 213. a retainer ring; 220. spline positioning teeth; 221. positioning the surface; 222. an annular groove; 223. a card slot; 231. adjusting the hexagon; 232. an upper baffle ring; 233. a coaxial cylinder; 234. a lower baffle ring; 241. an upper section of the thread; 242. keying the middle section; 243. a lower section of the thread; 240. pressing the screw hole;

300. a material ejecting mechanism; 31. an operating member; 32. an outer gear; 33. a threaded inner sleeve; 34. a jack rod sleeve; 35. a threaded ejector rod; 36. a bearing; 37. a bearing washer; 38. an adjusting block;

310. a handle; 320. a groove is embedded; 340. fastening screws; 341. a seal ring; 350. a sliding key;

400. an internal gear workpiece; 41. a small gear ring; 42. a large gear ring.

Detailed Description

In order to make the aforementioned and other features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

As shown in fig. 1 to 12, the present embodiment provides an internal gear fine slotting workpiece rotating tool setting loading and unloading tool, which is used for processing an internal gear workpiece 400, the loading and unloading tool includes a positioning base 100, and an ejecting mechanism 300 and a locking mechanism 200 which are arranged on the positioning base 100, the internal gear workpiece 400 includes a wheel disc, a small gear ring 41 and a large gear ring 42, the small gear ring 41 is located in the center of the wheel disc and has internal teeth, the large gear ring 42 is located at the edge of the wheel disc and has internal teeth, and the loading and unloading tool of the present embodiment is applied to the fine slotting processing of the large gear ring 42.

In this embodiment, the positioning base 100 is provided with a central stepped hole located at the center of the positioning base 100 and supporting bosses 14 distributed around the positioning base 100 outside the central stepped hole, the top surfaces of the supporting bosses 14 are located on the same horizontal plane, and chip removal notches 15 are left between two circumferentially adjacent supporting bosses 14. Preferably, four supporting bosses 14 are uniformly arranged on the upper surface of the positioning base 100 at intervals in the circumferential direction, two circumferential side surfaces of each supporting boss 14 are inclined planes, and the inclination angle is generally 15 to 20 degrees, so that two circumferential side walls of each chip removal notch 15 are trapezoidal notches which are narrow at the bottom and wide at the top, which is more beneficial to chip removal quickly and ensures the supporting strength and structural stability of each supporting boss 14, and the plane of the end surface of the internal gear workpiece 400 is supported on the supporting bosses 14 during gear shaping. The supporting bosses 14 may be integrally formed on the positioning base 100, or may be fixedly mounted on the positioning base 100 by fasteners, and the supporting bosses 14 with different height specifications may be replaced according to different internal gear workpieces 400 by using a fastener fixing manner.

The installation screw has been seted up respectively to 15 diapalls of chip removal breach, wear to locate in the installation screw and fixed through fastening bolt can with location base 100 is adorned admittedly on the revolving stage of gear shaping machine, and the revolving stage can drive location base 100 and the internal gear work piece 400 on it rotates, and the revolving stage of gear shaping machine still is connected with translation drive arrangement so that the revolving stage can drive location base 100 and the internal gear work piece 400 on it translation to the position with the gear shaping sword mating reaction of gear shaping machine.

In addition, the central stepped hole is composed of an upper hole 11, a middle hole 12 and a lower hole 13 which are coaxially and vertically communicated, the aperture of the upper hole 11 is larger than that of the middle hole 12, the aperture of the middle hole 12 is larger than that of the lower hole 13, the upper hole 11 is used for installing a taper positioning seat 21 and fixing the taper positioning seat 21 on the positioning base 100, the lower hole 13 is used for keeping the locking mechanism 200 and the positioning base 100 concentric, the middle hole 12 is used for reserving a certain space to ensure that the spline taper positioning sleeve 22 can be completely contacted and matched with the taper positioning seat 21, the depth of the middle hole 12 is generally 5 mm-10 mm, and the inner diameter of the middle hole 12 is not smaller than the outer diameter of the bottom end of the spline taper positioning sleeve 22.

In this embodiment, the locking mechanism 200 includes a taper positioning seat 21, a spline taper positioning sleeve 22, a lock nut 23 and a compression screw 24, the taper positioning seat 21 is fixedly installed in the upper hole 11 of the central stepped hole, the outer diameter of the taper positioning seat 21 is equivalent to the inner diameter of the upper hole 11, a tapered hole 211 with a narrow lower part and a wide upper part is formed in the center of the taper positioning seat 21, a column hole 212 with an inner diameter identical to the inner diameter of the bottom end of the tapered hole 211 is formed in the bottom end of the tapered hole 211 in a communication manner, the spline taper positioning sleeve 22 has a positioning surface 221 matched with the tapered hole 211 and the column hole 212 and a spline positioning tooth 220 located on the outer peripheral surface of the top, and the spline positioning tooth 220 is used for being engaged and positioned with the gear teeth of the small gear ring 41 of the internal gear workpiece 400 at a pressure angle. Preferably, the taper positioning seat 21 of the present embodiment is made of high-carbon chromium bearing steel GCr15, and the spline taper positioning sleeve 22 is made of high-carbon high-chromium ledeburite steel Cr 12. The internal gear work piece 400 is not fixed a position to the elasticity cover that rises, but tapering positioning seat 21 and the combination of spline tapering position sleeve 22 utilize taper hole 211 and locating surface 221's compressed tightly cooperation to accomplish radial positioning and axial positioning, and tapering positioning seat 21 is high with spline tapering position sleeve 22 structural strength, non-deformable, and longe-lived, and in the gear shaping course of working, the two does not take place relative rotation, effectively overcomes the wearing and tearing problem because of relative friction leads to.

Further, a step surface is concavely arranged on the top surface of the taper positioning seat 21, a retaining ring 213 is reserved between the step surface 2 and the top end of the taper hole 211, and an annular groove 222 matched with the retaining ring 213 is formed in the position, corresponding to the retaining ring 213, of the spline taper positioning sleeve 22. Preferably, the outer peripheral surface of the retainer ring 213 is a vertical surface and perpendicular to the top surface of the retainer ring 213, and the top wall and the outer side wall of the annular groove 222 are also perpendicular L-shaped structures. So, make the area of contact between tapering positioning seat 21 and the spline tapering position sleeve 22 bigger on the one hand for tapering positioning seat 21 combines more inseparabler with spline tapering position sleeve 22 under locking state, and the two synchronous revolution is processed in gear shaping, and processing is more accurate, and on the other hand also makes piece or coolant liquid can not flow into taper hole 211 and locating surface 221 and influence positioning accuracy, also more convenient clearance. In addition, the column hole 212 and the retainer ring 213 also play a role in guiding the spline taper positioning sleeve 22 to move up and down, so that the phenomenon that part of stress concentration is abraded and deformed due to the deflection of a relative central line between the spline taper positioning sleeve 22 and the locking nut 23 can be avoided, and the sensitivity of driving the spline taper positioning sleeve 22 to move up and down by the locking nut 23 is ensured.

This embodiment the center department of spline tapering position sleeve 22 runs through from top to bottom and is provided with the lockhole, but lock nut 23 wear to locate in the lockhole and its both ends respectively with spline tapering position sleeve 22 up-down terminal surface looks joint, specific with circumferential direction: the lock nut 23 is composed of an adjusting hexagon 231, an upper retaining ring 232, a coaxial cylinder 233 and a lower retaining ring 234 from top to bottom in sequence, the coaxial cylinder 233 penetrates through the lock hole, the outer diameter of the coaxial cylinder 233 is the same as the inner diameter of the lock hole, the coaxial cylinder 233 can freely rotate in the lock hole but is limited by the upper retaining ring 232 and the lower retaining ring 234 and is axially fixed, the lower retaining ring 234 is radially and convexly arranged at the bottom end of the coaxial cylinder 233, the upper retaining ring 232 is radially and convexly arranged at the top end of the coaxial cylinder 233, and the adjusting hexagon 231 is arranged at the top of the upper retaining ring 232 and is coaxial with the coaxial cylinder 233. The bottom of the spline taper positioning sleeve 22 is provided with a clamping groove 223 corresponding to the position of the lower retaining ring 234, and the lower retaining ring 234 is fittingly clamped in the clamping groove 223 and freely and horizontally rotates along with the coaxial cylinder 233. When the locking nut 23 is operated during loading, unloading and positioning, the action is simple, the operation is convenient, the locking nut 23 is in threaded fit with the compression screw 24, the position is stable and the locking force is strong after the operation is in place, and uncontrollable factors such as friction loss, oil return displacement, improper resetting of the elastic expansion sleeve and the like caused by the traditional method that the hydraulic cylinder drives the pull rod to move up and down are avoided.

In this embodiment, a locking screw hole is vertically formed through the center of the locking nut 23, that is, central openings are formed in the adjusting hexagon 231, the upper retaining ring 232, the coaxial cylinder 233 and the lower retaining ring 234 and are communicated together to form the locking screw hole, the compression screw 24 is sequentially provided with a thread upper section 241, a key joint middle section 242 and a thread lower section 243 from top to bottom, the thread lower section 243 of the compression screw 24 is locked and fixed at the bottom of the positioning base 100 through a nut, and the thread upper section 241 of the compression screw 24 is in threaded connection with the locking screw hole. The side wall of the lower hole 13 is further provided with a key groove, the position of the compression screw 24 corresponding to the key groove is provided with a matching key groove for embedding the flat key, and the flat key is positioned in the key groove and the matching key groove in the installation state, so that the circumferential rotation of the compression screw 24 can be limited, and the compression screw 24 and the positioning base 100 are concentric.

During installation, the lower thread section 243 of the compression screw 24 is screwed into the nut in place, then penetrates through the central stepped hole from bottom to top, then the positioning base 100 with the compression screw 24 is fixedly arranged on the rotary table and supports the bottom of the compression screw 24, then the taper positioning seat 21 is fixedly arranged in the central stepped hole of the positioning base 100 (in the step, the step can be performed before the compression screw 24 is penetrated or the positioning base 100 is fixedly arranged before the rotary table), finally the compression screw 24 and the locking screw hole are aligned, and the spline taper positioning sleeve 22 is gradually screwed down by rotating the locking nut 23, so that the assembly is completed. Therefore, the locking nut 23 and the spline taper positioning sleeve 22 can rotate circumferentially, and the locking mechanism 200 is convenient to assemble.

After the small ring gear 41 of the internal gear workpiece 400 corresponds to the spline positioning teeth 220 of the spline taper positioning sleeve 22, sleeving the internal gear workpiece 400 into the spline taper positioning sleeve 22 and supporting the internal gear workpiece on the supporting boss 14, before locking, rotating the lock nut 23 upwards and driving the spline taper positioning sleeve 22 to move upwards, separating the positioning surface 221 from the wall surface of the taper hole 211, aligning the slotting cutter and the large gear ring 42 of the internal gear workpiece 400 to be subjected to fine slotting, because the spline taper positioning sleeve 22 and the locking nut 23 can be matched in a circumferential rotating way, the initial direction of the internal gear workpiece 400 can be directly adjusted in a rotating way, the angle of the main shaft does not need to be manually adjusted after the main shaft of the gear shaper is clutched, the alignment is more convenient and faster, in addition, no friction occurs between the positioning surface 221 of the spline taper positioning sleeve 22 and the wall surface of the taper hole 211 of the taper positioning seat 21 in the alignment process, so that the radial positioning and axial positioning accuracy in locking can be effectively ensured.

When the internal gear workpiece 400 is locked, the adjusting hexagon 231 is rotated to enable the locking nut 23 to be screwed downwards relative to the compression screw 24, at the moment, the locking nut 23 drives the spline taper positioning sleeve 22 to compress the taper positioning seat 21 downwards, so that the spline taper positioning sleeve 22 and the taper positioning seat 21 are tightly combined and can rotate synchronously and horizontally, the radial positioning and the axial positioning of the spline taper positioning sleeve 22 are completed, the radial positioning and the axial positioning of the internal gear workpiece 400 are further completed, and the positioning precision is high.

The top of the hold-down screw 24 of this embodiment is provided with a hold-down screw hole 240 which is axially extended and arranged, after locking and before gear shaping, the hold-down cap 25 is screwed into the hold-down screw hole 240, the hold-down cap 25 comprises a cap body, a connecting stud and an operating nut, the operating nut is fixedly connected to the top end of the connecting stud and abuts against the upper surface of the cap body, the main body of the connecting stud is positioned below the cap body and is in threaded fit with the hold-down screw hole 240, the outer diameter of the cap body is larger than the outer diameter of the spline taper positioning sleeve 22, the cap body seals the small ring gear 41 of the internal gear workpiece 400 and compresses the internal gear workpiece 400 in the mounting state, so that the internal gear workpiece 400 rotates synchronously with the positioning base 100 and the locking mechanism 200, thereby avoiding deviation in the gear shaping process, the machining precision is high, and debris and coolant entering the locking mechanism 200 can be greatly reduced by the hold-down cap 25, which is convenient for cleaning and reusing, the standby time of the gear shaping machine is shortened, and the production efficiency is improved.

In this embodiment, liftout mechanism 300 includes operating parts 31 and corresponds the liftout subassembly that sets up in supporting boss 14 and by operating parts 31 driven respectively, it is provided with the liftout hole 16 that is used for installing the liftout subassembly to correspond on the boss 14 to support, can drive in step through operating parts 31 and liftout subassembly and push up the work piece or descend to reset, it makes inner gear work piece 400 after the gear shaping processing is accomplished upwards raise and with positioning base 100 and the phase separation of spline tapering locating sleeve 22 to push up the work piece, laborsaving and each liftout subassembly goes up and down in step, and is very little to inner gear work piece 400 damage, and unloading efficiency obviously improves, and intensity of labour obviously reduces. Specifically, in this embodiment, 1 group of liftout assemblies are respectively and correspondingly arranged on the four supporting bosses 14.

In this embodiment, each of the ejector components includes a threaded ejector rod 35, an ejector rod sleeve 34, an external gear 32 and a threaded inner sleeve 33, the threaded inner sleeve 33 is fixedly installed in the external gear 32, an ejector screw hole is vertically arranged at the center of the threaded inner sleeve 33 in a penetrating manner, the ejector rod sleeve 34 is fixedly installed in the ejector hole 16 above the threaded inner sleeve 33, and the threaded ejector rod 35 is threadedly installed in the ejector screw hole, and the upper portion of the threaded ejector rod 35 is circumferentially fixed and axially slidably connected with the ejector rod sleeve 34. The operating part 31 is an inner gear ring which is sleeved outside the positioning base 100 and is in meshed connection with each outer gear 32, in order to facilitate rotation of the inner gear ring, a plurality of handles 310 are mounted on the outer wall of the inner gear ring, the inner gear ring can be driven to rotate by pulling the handles 310, and then the outer gears 32 and the thread inner sleeves 33 are rotated, so that the thread mandrils 35 rise or fall.

The fastening method of the threaded inner sleeve 33 and the external gear 32 in this embodiment may specifically adopt: screw holes are correspondingly formed in the side wall of the outer gear 32 and the outer wall of the threaded inner sleeve 33, and then bolts are used for penetrating through the screw holes and fixing the outer gear 32 and the threaded inner sleeve 33 together. The installation method of the ejector rod sleeve 34 and the positioning base 100 can specifically adopt: a fastening hole is formed in the position, corresponding to the outer wall of the ejector rod sleeve 34, of the positioning base 100, and a fastening screw is screwed into the fastening hole to enable the fastening screw 340 to be tightly pressed against the ejector rod sleeve 34. The sliding connection between the ejector rod sleeve 34 and the threaded ejector rod 35 can be realized by a sliding key 350. Further, a receiving ring is concavely arranged on the top of the inner hole of the ejector rod sleeve 34, and a sealing ring 341 is fittingly pressed in the receiving ring, so that cooling liquid or debris is prevented from entering the inner hole of the ejector rod sleeve 34. The ejector pin sleeve 34 and the threaded inner sleeve 33 are both preferably made of 40Cr steel.

In addition, a horizontal support ring is radially and convexly arranged at the bottom end of the threaded inner sleeve 33, an embedded groove 320 matched with the horizontal support ring is formed in the position, corresponding to the horizontal support ring, of the bottom end of the inner hole of the outer gear 32, and the assembled horizontal support ring is clamped into the embedded groove 320 and provides a supporting force for upwards supporting the outer gear 32. The threaded inner sleeve 33 is higher than the outer gear 32, a bearing 36 is arranged between the top of the threaded inner sleeve 33 and the inner wall of the material ejecting hole 16, a bearing washer 37 is clamped above the bearing 36 and the threaded inner sleeve 33, the bottom of the ejector rod sleeve 34 is abutted against the bearing washer 37, the bearing 36 is used for realizing centering rotation of the threaded inner sleeve 33, and the axial displacement of the threaded inner sleeve 33 is limited through the bearing washer 37 and the bearing 36.

The operation process of the material ejecting mechanism 300 of this embodiment is as follows: before the internal gear workpiece 400 is positioned, the operating parts 31 drive the lifters to descend and reset, the internal gear workpiece 400 is supported on the supporting bosses 14, then after gear shaping is completed, the operating parts 31 are rotated to enable the lifters to synchronously act, the threaded ejector rods 35 ascend to vertically lift the internal gear workpiece 400 upwards away from the supporting bosses 14 and the locking mechanism 200, and blanking is facilitated. Further, in order to conveniently adjust the ejection height of the ejection assembly, a counter bore is formed in the top of the threaded ejector rod 35 of the embodiment, an adjusting block 38 is installed in the counter bore through threads, and the adjusting block 38 is preferably made of 40Cr steel.

Having shown and described the fundamental principles and the principal features of the invention and its advantages, it will be understood by those skilled in the art that the present invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.

Claims

1. Rotatory tool setting loading and unloading frock of fine gear shaping work piece of internal gear, its characterized in that: the assembling and disassembling tool comprises a positioning base and a locking mechanism arranged on the positioning base, wherein a central stepped hole positioned at the center of the positioning base and supporting bosses distributed on the positioning base outside the central stepped hole in a surrounding manner are arranged on the positioning base, and the top surfaces of the supporting bosses are positioned on the same horizontal plane; the locking mechanism comprises a taper positioning seat, a spline taper positioning sleeve, a locking nut and a compression screw, the taper positioning seat is fixedly arranged in a central stepped hole, a taper hole which is narrow at the bottom and wide at the top is formed in the center of the taper positioning seat, the spline taper positioning sleeve is provided with a positioning surface matched with the taper hole and spline positioning teeth on the outer peripheral surface of the top, a lock hole is formed in the center of the spline taper positioning sleeve in a penetrating mode from top to bottom, the locking nut can be circumferentially and rotatably arranged in the lock hole in a penetrating mode, two ends of the locking nut are respectively connected with the upper end surface and the lower end surface of the spline taper positioning sleeve in a clamping mode, a locking screw hole is formed in the center of the locking nut in a penetrating mode from top to bottom, and the compression screw is threaded through the locking screw hole and circumferentially and axially fixed with the positioning base.

2. The internal gear fine slotting workpiece rotating tool setting loading and unloading tool according to claim 1, characterized in that: the top surface of the taper positioning seat is concavely provided with a step surface, a check ring is reserved between the step surface and the top end of the taper hole, and the position of the spline taper positioning sleeve corresponding to the check ring is provided with an annular groove matched with the check ring.

3. The internal gear fine slotting workpiece rotating tool setting loading and unloading tool according to claim 1, characterized in that: chip removal breach is left between two adjacent support bosss of circumference, and the installation screw has been seted up respectively to chip removal breach diapire.

4. The internal gear fine slotting workpiece rotating tool setting loading and unloading tool according to claim 1, characterized in that: the central stepped hole is composed of an upper hole, a middle hole and a lower hole which are coaxially and vertically communicated, the aperture of the upper hole is larger than that of the middle hole, the aperture of the middle hole is larger than that of the lower hole, the inner diameter of the middle hole is not smaller than the outer diameter of the bottom end of the spline taper positioning sleeve, and the taper positioning seat is fixedly installed in the upper hole.

5. The internal gear fine slotting workpiece rotating tool setting loading and unloading tool according to claim 4, characterized in that: the pressing screw is sequentially provided with a thread upper section, a key joint middle section and a thread lower section from top to bottom, the thread lower section of the pressing screw is locked and fixed at the bottom of the base through a nut, the thread upper section of the pressing screw is in threaded connection with a locking screw hole, and the side wall of the lower hole is connected with the key joint middle section through a flat key.

6. The internal gear fine slotting workpiece rotating tool setting loading and unloading tool according to claim 1, characterized in that: the locking nut structure is characterized in that the locking nut structure sequentially comprises an adjusting hexagonal body, an upper retaining ring, a coaxial cylinder body and a lower retaining ring from top to bottom, the coaxial cylinder body penetrates through the locking hole, the coaxial cylinder body can rotate freely in the locking hole but is limited by the upper retaining ring and the lower retaining ring in an axial fixed mode, the lower retaining ring is radially and convexly arranged at the bottom end of the coaxial cylinder body and is clamped with the spline taper positioning sleeve, the upper retaining ring is radially and convexly arranged at the top end of the coaxial cylinder body and is abutted to the spline taper positioning sleeve, the adjusting hexagonal body is arranged at the top of the upper retaining ring and is coaxial with the coaxial cylinder body, and the adjusting hexagonal body, the upper retaining ring, the coaxial cylinder body and the lower retaining ring are internally provided with holes in the center and communicated together to form the locking screw hole.

7. The internal gear fine slotting workpiece rotating tool setting loading and unloading tool according to claim 1, characterized in that: the top of the compression screw rod is provided with a compression screw hole which is axially extended and arranged, a compression cover is installed in the compression screw hole in a threaded mode, the outer diameter of the compression cover is larger than that of the spline taper positioning sleeve, and the cover body seals the small gear ring of the internal gear workpiece and compresses the internal gear workpiece in the installation state.

8. The internal gear fine slotting workpiece rotating tool setting loading and unloading tool according to claim 1, characterized in that: the loading and unloading tool further comprises an ejection mechanism, the ejection mechanism comprises operating parts and ejection assemblies which are correspondingly arranged in the supporting bosses and driven by the operating parts respectively, and ejection holes used for mounting the ejection assemblies are correspondingly arranged on the supporting bosses.

9. The internal gear fine slotting workpiece rotating tool setting loading and unloading tool according to claim 8, characterized in that: each ejection component comprises a threaded ejector rod, an ejector rod sleeve, an outer gear and a threaded inner sleeve, the operating part is an inner gear ring, the inner gear ring is sleeved outside the positioning base and is in meshed connection with the outer gears, the threaded inner sleeve is fixedly arranged in the outer gear, an ejection screw hole penetrates through the center of the threaded inner sleeve from top to bottom, the ejector rod sleeve is fixedly arranged in an ejection hole above the threaded inner sleeve, the threaded ejector rod is threaded in the ejection screw hole, and the upper portion of the threaded ejector rod is circumferentially fixed and axially connected with the ejector rod sleeve in a sliding manner.

10. The internal gear fine slotting workpiece rotating tool setting loading and unloading tool according to claim 9, characterized in that: the threaded inner sleeve is higher than the outer gear, a bearing is arranged between the top of the threaded inner sleeve and the inner wall of the material ejecting hole, a bearing gasket is clamped above the bearing and the threaded inner sleeve, and the bottom of the ejector rod sleeve abuts against the bearing gasket.