阅读说明：本技术 一种用于换向器的铣槽机 (Slot milling machine for commutator ) 是由 陆存祥 黄祥祥 胡浩楠 敖文亮 张红卫 王育芽 曹年发 王永阳 孙士泽 林海洲 于 2019-12-02 设计创作，主要内容包括：本发明涉及铣槽机技术领域,旨在提供一种用于换向器的铣槽机,包括进料机构、铣槽机构、出料机构、移料机构；进料机构包括落料装置与置料台；置料台顶端设置有圆形的置料槽,置料槽内设置有呈环状的定位套,定位套的上端设置有若干定位块；铣槽机构包括定料装置与铣槽装置；定料装置包括固定台,固定台的侧壁上开设有若干定位槽。当待加工的换向器主体在落料装置的作用下被放置于置料槽中时,使定位块插入换向器主体下端对应的焊线缝中实现初步定位,接着利用移料机构将换向器主体转移至固定台上,并利用定位槽与换向器主体下端的凸脚配合进一步实现定位,从而使铣槽装置能够精准地于换向器主体上铣出所需的绝缘槽。(The invention relates to the technical field of slot milling machines, and aims to provide a slot milling machine for a commutator, which comprises a feeding mechanism, a slot milling mechanism, a discharging mechanism and a material moving mechanism, wherein the feeding mechanism is arranged on the feeding mechanism; the feeding mechanism comprises a blanking device and a material placing table; a circular material placing groove is formed in the top end of the material placing table, an annular positioning sleeve is arranged in the material placing groove, and a plurality of positioning blocks are arranged at the upper end of the positioning sleeve; the groove milling mechanism comprises a material fixing device and a groove milling device; the material fixing device comprises a fixed table, and a plurality of positioning grooves are formed in the side wall of the fixed table. When the commutator main body to be machined is placed in the material placing groove under the action of the blanking device, the positioning block is inserted into the welding line corresponding to the lower end of the commutator main body to realize primary positioning, then the commutator main body is transferred to the fixing table by the material transferring mechanism, and positioning is further realized by the matching of the positioning groove and the convex foot at the lower end of the commutator main body, so that the groove milling device can accurately mill a required insulating groove on the commutator main body.)

1. A slot milling machine for a commutator comprises a rack (2), a feeding mechanism (3) arranged on the rack (2), a slot milling mechanism (4), a discharging mechanism and a material moving mechanism (6) used for conveying workpieces from the feeding mechanism (3) to the slot milling mechanism (4) and the discharging mechanism in sequence; the method is characterized in that: the feeding mechanism (3) comprises a feeding barrel (31), a blanking device (32) and a material placing table (33); a circular material placing groove (331) is formed in the top end of the material placing table (33), an annular positioning sleeve (332) is arranged in the material placing groove (331) along the axis, a plurality of positioning blocks (3321) protruding upwards are arranged at the upper end of the positioning sleeve (332), and the positioning blocks (3321) are arranged corresponding to the welding wire grooves (12) in the lower end of the commutator body (1); the groove milling mechanism (4) comprises a material fixing device (41), an indexing rotating device (42) and a groove milling device (44); the material fixing device (41) comprises a cylindrical fixing table (411), and a guide column (4111) matched with a central hole (11) of the commutator body (1) is arranged at the top end of the fixing table (411) along the axial lead; and a plurality of positioning grooves (4112) matched with the convex feet (13) at the lower end of the commutator body (1) are uniformly formed in the side wall of the fixed table (411) along the circumferential direction.

2. A slot milling machine for a commutator as defined in claim 1, wherein: the top end of the positioning block (3321) is chamfered at two sides to form a sharp top.

3. A slot milling machine for a commutator as defined in claim 1, wherein: the outer wall of the positioning sleeve (332) is in clearance fit with the inner wall of the material placing groove (331); a fastening hole (333) penetrating into the material placing groove (331) is formed in the outer wall of the material placing table (33), and the fastening hole (333) is aligned to a positioning sleeve (332) located in the material placing groove (331); a fastening bolt (334) is connected with the internal thread of the fastening hole (333).

4. A slot milling machine for a commutator as defined in claim 1, wherein: the material placing table (33) is provided with positioning holes (335) penetrating through two sides of the material placing groove (331) along the radial direction, and the positioning holes (335) can be covered by any positioning block (3321) at the upper end of a positioning sleeve (332) in the material placing groove (331).

5. A slot milling machine for a commutator as defined in claim 1, wherein: a downward pressing lifting cylinder (412) is arranged above the fixed table (411) on the rack (2), a piston rod of the downward pressing lifting cylinder (412) is vertically arranged downwards, and a downward pressing barrel (413) is arranged at the end part of the piston rod along the axial lead of the fixed table (411); the bottom of the lower pressing cylinder (413) is provided with a guide hole matched with the guide post (4111) along the axial lead; the difference between the outer diameters of the lower pressing cylinder (413) and the commutator body (1) is smaller than the depth of an insulation groove (14) to be formed in the surface of the commutator body (1).

6. A slot milling machine for a commutator as defined in claim 5, wherein: the milling groove mechanism (4) further comprises a material ejecting device (43); the material ejecting device (43) comprises an ejection sleeve (431) which is connected to the outer side of the fixed table (411) in a sliding mode along the axis, and an ejection block (4311) matched with the positioning groove (4112) is arranged on the inner wall of the ejection sleeve (431).

7. A slot milling machine for a commutator as defined in claim 6, wherein: the material ejecting device (43) further comprises an ejection lifting cylinder (432) arranged on the rack (2) along the vertical direction, and an ejection plate (433) arranged on a piston rod of the ejection lifting cylinder (432); the ejection plate (433) is horizontally arranged in a U shape, and the ejection sleeve (431) is positioned in the U-shaped opening of the ejection plate (433); limiting grooves (4331) are oppositely formed in the inner walls of the two sides of the U-shaped opening respectively, a ring of annular operating edges (4312) are arranged on the outer wall of the ejection sleeve (431), and the operating edges (4312) are matched with the limiting grooves (4331) on the two sides simultaneously.

8. A slot milling machine for a commutator as defined in claim 1, wherein: the blanking device (32) comprises a blanking seat (321) arranged on the rack (2), a blanking channel (3211) penetrates through the blanking seat (321) along the vertical direction, and an operation notch (3212) penetrating through the blanking seat (321) towards the outer side is arranged on one side of the blanking channel (3211) along the vertical direction; the blanking device (32) further comprises an upper limiting cylinder (322) and a lower limiting cylinder (323) which are arranged on the outer side of the blanking seat (321) at intervals from top to bottom, piston rods of the upper limiting cylinder (322) and the lower limiting cylinder (323) face the operation notch (3212), the end parts of the piston rods are respectively provided with a squeezing block (3221) and a limiting block (3231), and the squeezing block (3221) and the limiting block (3231) can respectively enter and exit the blanking channel (3211) under the action of the upper limiting cylinder (322) and the lower limiting cylinder (323); the distance between the limiting block (3231) and the extrusion block (3221) in the vertical direction is greater than the height of one commutator body (1) and less than the sum of the heights of the two commutator bodies (1).

9. A slot milling machine for a commutator as defined in claim 1, wherein: the feeding mechanism (3) further comprises a material placing lifting device (34); the material placing lifting device (34) comprises a material placing lifting cylinder (341) arranged on the rack (2) in the vertical direction and a material placing frame (342) arranged on a piston rod of the material placing lifting cylinder (341), and the material placing table (33) is fixedly connected to the material placing frame (342).

Technical Field

The invention relates to the technical field of slot milling machines, in particular to a slot milling machine for a commutator.

Background

The groove milling method is characterized in that bakelite powder and copper sheets need to be milled together in the groove type commutator processing process, a plurality of vertical insulating grooves need to be milled on the surface of one commutator, and a small commutator is difficult to accurately find the position for accurate processing in the groove milling process.

At present, chinese patent document with publication number CN204221069U in the prior art discloses a miniature vertical slot milling machine, which comprises a stand table, wherein a milling mechanism is installed at the left part of the table top of the stand table, a manipulator feeding and discharging mechanism is vertically installed at the right part of the table top of the stand table, a dividing head assembling mechanism is vertically installed at the front part between the milling mechanism and the manipulator feeding and discharging mechanism, and a commutator which is not milled by the manipulator feeding and discharging mechanism can be installed on the dividing head assembling mechanism or taken down from the dividing head assembling mechanism. A vibrating feeding tray is arranged on the rear side surface of the milling mechanism, the lower end of a feeding slide rail of the vibrating feeding tray is fixed on the side surface of the manipulator feeding and discharging mechanism, and the commutator which is not milled with the grooves falls onto the manipulator feeding and discharging mechanism through vibrating the feeding tray; and a blanking pipe is arranged between the milling mechanism and the manipulator feeding and discharging mechanism and close to the dividing head assembling mechanism.

As shown in fig. 1, a conventional commutator includes a commutator main body, a plurality of welding wire grooves are uniformly arranged at the bottom of the commutator main body along the circumferential direction, so that a protruding pin is formed between two adjacent welding wire grooves, a plurality of insulation grooves alternately arranged with the welding wire grooves are uniformly arranged on the surface of the commutator main body along the circumferential direction, and the insulation grooves penetrate through the upper and lower ends along the axial line direction; for convenience of processing, the wire groove processing step is performed before the insulation groove, namely, the insulation groove needs to be processed on the commutator body with the wire groove.

If the insulating groove is milled by adopting the vertical groove milling machine, the positions of the welding wire grooves cannot be accurately positioned by the vibrating feeding disc and the mechanical arm feeding and discharging mechanism, and the insulating groove cannot be milled accurately according to the corresponding positions and needs to be improved.

Disclosure of Invention

The invention aims to provide a slot milling machine for a commutator, which has the effect of accurately positioning the commutator to be processed.

The technical purpose of the invention is realized by the following technical scheme:

a slot milling machine for a commutator comprises a frame, a feeding mechanism, a slot milling mechanism, a discharging mechanism and a material moving mechanism, wherein the feeding mechanism, the slot milling mechanism and the discharging mechanism are arranged on the frame; the feeding mechanism comprises a feeding barrel, a blanking device and a material placing table; the top end of the material placing table is provided with a circular material placing groove, an annular positioning sleeve is arranged in the material placing groove along the axial lead, the upper end of the positioning sleeve is provided with a plurality of positioning blocks which are protruded upwards, and the positioning blocks are arranged corresponding to the welding wire grooves at the lower end of the commutator main body; the groove milling mechanism comprises a material fixing device, an indexing rotating device and a groove milling device; the material fixing device comprises a cylindrical fixing table, and a guide column matched with a central hole of the commutator main body is arranged at the top end of the fixing table along the axial lead; and a plurality of positioning grooves matched with the convex feet at the lower end of the commutator main body are uniformly formed in the side wall of the fixed table along the circumferential direction.

By adopting the technical scheme, when the commutator main body to be processed is placed in the material placing groove under the action of the blanking device, the positioning block is inserted into the welding line corresponding to the lower end of the commutator main body to realize primary positioning, then the commutator main body is transferred to the fixed table by the material moving mechanism, and positioning is further realized by the matching of the positioning groove and the convex foot at the lower end of the commutator main body, so that the groove milling device can accurately mill the required insulating groove at the correct position on the commutator main body.

The invention is further configured to: and the top end of the positioning block is provided with chamfers at two sides to form a sharp top.

By adopting the technical scheme, the pointed positioning block has a certain guiding function, and the positioning block can be conveniently aligned and inserted into a welding line seam at the lower end of the commutator main body.

The invention is further configured to: the outer wall of the positioning sleeve is in clearance fit with the inner wall of the material placing groove; the outer wall of the material placing table is provided with a fastening hole penetrating into the material placing groove, and the fastening hole is aligned to a positioning sleeve positioned in the material placing groove; and a fastening bolt is connected in the fastening hole through internal threads.

Through adopting above-mentioned technical scheme, through screwing up fastening bolt, make its tip that passes the fastening hole top fix on the surface of position sleeve to realize the demountable installation of position sleeve, so that change the position sleeve that has different locating pieces according to different commutators.

The invention is further configured to: the material placing table is provided with positioning holes penetrating through two sides of the material placing groove along the radial direction, and the positioning holes can be covered by any positioning block at the upper end of the positioning sleeve in the material placing groove.

By adopting the technical scheme, the installation angle of the positioning sleeve in the material placing groove can be determined through the position relation between the positioning hole and the positioning block, so that the positioning block corresponds to the positioning groove on the fixing table, and the commutator body is convenient to position after being transferred.

The invention is further configured to: a downward pressing lifting cylinder is arranged above the fixed table on the rack, a piston rod of the downward pressing lifting cylinder is vertically arranged downwards, and a downward pressing barrel is arranged at the end part of the piston rod along the axial lead of the fixed table; the bottom of the lower pressing cylinder is provided with a guide hole matched with the guide post along the axial lead; the difference between the outer diameters of the lower pressing cylinder and the commutator main body is smaller than the depth of an insulation groove to be formed in the surface of the commutator main body.

Through adopting above-mentioned technical scheme, in order to improve the accurate nature of location, the size cooperation between constant head tank and the protruding foot needs very inseparable, and this can lead to the commutator main part to place in the constant head tank that the protruding foot probably can't insert the correspondence when on the fixed station completely, consequently utilizes to push down the lift cylinder drive and pushes down a section of thick bamboo, compresses tightly fixedly the commutator main part downwards, strengthens the steadiness of commutator main part, guarantees the machining precision simultaneously.

The invention is further configured to: the groove milling mechanism further comprises a material ejecting device; the ejection device comprises an ejection sleeve which is connected to the outer side of the fixed table in a sliding mode along the axial lead, and an ejection block matched with the positioning groove is arranged on the inner wall of the ejection sleeve.

By adopting the technical scheme, when the ejection sleeve moves upwards, the ejection block is ejected to the bottom of the convex foot, so that the commutator body is ejected upwards and loosened, and the commutator body cannot be taken down from the fixed table due to the close fit between the convex foot and the positioning groove.

The invention is further configured to: the ejection device also comprises an ejection lifting cylinder arranged on the rack along the vertical direction and an ejection plate arranged on a piston rod of the ejection lifting cylinder; the ejection plate is horizontally arranged in a U shape, and the ejection sleeve is positioned in the U-shaped opening of the ejection plate; limiting grooves are formed in the inner walls of the two sides of the U-shaped opening respectively and oppositely, a circle of annular operating edge is arranged on the outer wall of the ejection sleeve, and the operating edge is matched with the limiting grooves on the two sides simultaneously.

By adopting the technical scheme, when the commutator main body is processed and needs to be ejected, the ejection lifting cylinder extends out of the piston rod to push the ejection plate to move upwards, and the two sides of the operation edge are both positioned in the limit grooves, so that the ejection sleeve can move upwards under the driving of the ejection plate, and the ejection operation is realized.

The invention is further configured to: the blanking device comprises a blanking seat arranged on the rack, a blanking channel is arranged on the blanking seat in a penetrating manner along the vertical direction, and an operation notch which penetrates through the blanking seat towards the outer side is arranged on one side of the blanking channel along the vertical direction; the blanking device also comprises an upper limiting cylinder and a lower limiting cylinder which are arranged on the outer side of the blanking seat at intervals from top to bottom, piston rods of the upper limiting cylinder and the lower limiting cylinder face the operation gap, and the end parts of the piston rods are respectively provided with an extrusion block and a limiting block, and the extrusion block and the limiting block can respectively enter and exit the blanking channel under the action of the upper limiting cylinder and the lower limiting cylinder; the distance between the limiting block and the extrusion block in the vertical direction is larger than the height of one commutator body and smaller than the sum of the heights of the two commutator bodies.

By adopting the technical scheme, the lower limiting cylinder is utilized to drive the limiting block to enter the blanking channel, the commutator body above the limiting block falls, the upper limiting cylinder drives the extrusion block to push against the surface of the second commutator body from bottom to top to limit the second commutator body, when the lower limiting block is moved out of the blanking channel under the drive of the lower limiting cylinder, the lowermost commutator body falls downwards, the limiting block resets, the extrusion block is loosened from the commutator body to enable the commutator body to fall onto the limiting block, and the circulation is repeated, so that the effect of falling the commutator bodies one by one is realized.

The invention is further configured to: the feeding mechanism also comprises a material placing lifting device; the material placing lifting device comprises a material placing lifting cylinder and a material placing frame, wherein the material placing lifting cylinder is arranged on the rack in the vertical direction, the material placing frame is arranged on a piston rod of the material placing lifting cylinder, and the material placing table is fixedly connected to the material placing frame.

Through adopting above-mentioned technical scheme, utilize to put material lift cylinder drive and put the material platform of putting on the work or material rest and upwards move, make and put the lower extreme opening that the silo aimed at blanking passageway to make the commutator main part can accurately fall into and put the silo.

In conclusion, the beneficial effects of the invention are as follows:

1. when a commutator main body to be machined is placed in the material placing groove under the action of the blanking device, the positioning block is inserted into a corresponding welding line seam at the lower end of the commutator main body to realize primary positioning, then the commutator main body is transferred to the fixing table by using the material transferring mechanism, and the positioning groove is matched with a convex foot at the lower end of the commutator main body to further realize positioning, so that the groove milling device can accurately mill a required insulating groove at the correct position on the commutator main body;

2. in order to improve the positioning accuracy, the positioning grooves and the convex feet need to be closely matched in size, so that the convex feet can not be completely inserted into the corresponding positioning grooves when the commutator main body is placed on the fixing table, the downward pressing cylinder is driven by the downward pressing lifting cylinder to downwards compress and fix the commutator main body, the stability of the commutator main body is enhanced, and meanwhile, the machining accuracy is ensured;

3. when the ejection sleeve moves upwards, the ejection block is ejected to the bottom of the convex foot, so that the commutator body is ejected upwards and loosened, and the commutator body cannot be taken down from the fixed table due to the close fit between the convex foot and the positioning groove.

Drawings

FIG. 1 is a schematic structural view of a commutator body after being processed in the prior art;

FIG. 2 is a schematic view of the overall structure of the present invention;

FIG. 3 is a schematic top view of a partial structure of the present invention, for showing the position relationship of the material placing table, the fixing table, the discharging barrel and the material moving mechanism;

FIG. 4 is an exploded view of the feed cylinder and doffer of the present invention;

FIG. 5 is a schematic view of the exploded structure of the material placement table and the positioning sleeve of the present invention;

FIG. 6 is an exploded view of the ejector and the stationary platen of the present invention;

fig. 7 is an enlarged schematic view at a in fig. 2.

Reference numerals: 1. a commutator body; 11. a central bore; 12. a wire bonding groove; 13. a convex foot; 14. an insulating groove; 2. a frame; 3. a feeding mechanism; 31. a feeding cylinder; 32. a blanking device; 321. a blanking seat; 3211. a blanking channel; 3212. operating the notch; 322. an upper limiting cylinder; 3221. extruding the block; 323. a lower limiting cylinder; 3231. a limiting block; 33. a material placing table; 331. a material placing groove; 332. a positioning sleeve; 3321. positioning blocks; 333. a fastening hole; 334. fastening a bolt; 335. positioning holes; 34. a material placing lifting device; 341. a material placing lifting cylinder; 342. a material placing frame; 4. a groove milling mechanism; 41. a material fixing device; 411. a fixed table; 4111. a guide post; 4112. positioning a groove; 412. a lifting cylinder is pressed downwards; 413. pressing the cylinder; 42. an indexing rotation device; 421. a rotating seat; 422. a servo motor; 43. a material ejecting device; 431. ejecting a sleeve; 4311. ejecting a block; 4312. operating edges; 432. ejecting a lifting cylinder; 433. ejecting the plate; 4331. a limiting groove; 44. a groove milling device; 441. a lifting motor; 442. a milling cutter seat; 443. a disc cutter; 5. a discharging barrel; 6. a material moving mechanism; 61. a three-axis displacement device; 62. and (5) moving the material clamp.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The embodiment discloses a slot milling machine for a commutator, which comprises a frame 2, a feeding mechanism 3 arranged on the frame 2, a slot milling mechanism 4, a discharging mechanism and a material moving mechanism 6 used for conveying workpieces from the feeding mechanism 3 to the slot milling mechanism 4 and the discharging mechanism in sequence, as shown in fig. 2.

As shown in fig. 2 and 4, the feeding mechanism 3 includes a feeding cylinder 31, a blanking device 32, and a material placing table 33. Wherein, the feeding cylinder 31 is fixedly connected on the frame 2, and the upper end opening thereof is connected with the vibrating disk; the blanking device 32 comprises a blanking seat 321 fixedly connected to the lower end of the feeding cylinder 31, and a blanking channel 3211 communicated with the feeding cylinder 31 penetrates through the blanking seat 321 along the vertical direction; the material placing table 33 is fixedly connected to the frame 2 below the material dropping seat 321, a circular material placing groove 331 (see fig. 5) is formed at the top end of the material placing table 33, and the material placing groove 331 is aligned with the opening at the lower end of the material dropping channel 3211 upward.

As shown in fig. 2 and 4, the blanking device 32 further includes an upper limiting cylinder 322 and a lower limiting cylinder 323 fixed to the outer side of the blanking seat 321 at an interval from top to bottom, an operation gap 3212 penetrating the blanking seat 321 towards the outer side is formed in one side of the blanking channel 3211 where the upper limiting cylinder 322 and the lower limiting cylinder 323 are installed along the vertical direction, piston rods of the upper limiting cylinder 322 and the lower limiting cylinder 323 both face the operation gap 3212 and are fixedly connected with a pressing block 3221 and a limiting block 3231 made of rubber at ends respectively, and a distance between the limiting block 3231 and the pressing block 3221 in the vertical direction is greater than a height of one commutator body 1 and less than a sum of heights of the two commutator bodies 1. The lower limiting cylinder 323 is used for driving the limiting block 3231 to enter the blanking channel 3211, so that the commutator body 1 above can be prevented from falling, the upper limiting cylinder 322 drives the extrusion block 3221 to abut against the surface of the second commutator body 1 from bottom to top to limit the extrusion block, when the limiting block 3231 below is moved out of the blanking channel 3211 under the driving of the lower limiting cylinder 323, the commutator body 1 at the bottommost part falls downwards into the material placing groove 331, then the limiting block 3231 resets, and the extrusion block 3221 is loosened to enable the commutator body 1 to fall onto the limiting block 3231 to reciprocate circularly, so that the commutator body 1 can fall one by one.

As shown in fig. 2 and 3, a material placing lifting device 34 is fixedly mounted on the frame 2, the material placing lifting device 34 includes a material placing lifting cylinder 341 fixed on the frame 2 in the vertical direction, and a material placing frame 342 fixed on a piston rod of the material placing lifting cylinder 341, the material placing table 33 is fixedly connected to the material placing frame 342, the material placing lifting cylinder 341 can drive the material placing table 33 on the material placing frame 342 to move upward, so that the material placing table 33 is close to a lower end opening of a blanking channel 3211 (see fig. 4), and the commutator body 1 can accurately fall into the material placing groove 331, and the commutator body 1 is prevented from falling out.

As shown in fig. 5, a ring-shaped positioning sleeve 332 is disposed in the material placing groove 331 along the axial line, and the outer wall of the positioning sleeve 332 is in clearance fit with the inner wall of the material placing groove 331; the outer wall of the material placing table 33 is provided with a fastening hole 333 penetrating into the material placing groove 331, the fastening hole 333 is aligned to the positioning sleeve 332 located in the material placing groove 331, a fastening bolt 334 is connected with the internal thread of the fastening hole 333, and the end part of the fastening bolt 334 penetrating through the fastening hole 333 is supported against the surface of the positioning sleeve 332 to be fixed by screwing the fastening bolt 334, so that the positioning sleeve 332 is detachably mounted, and replacement is convenient.

As shown in fig. 5, a plurality of positioning blocks 3321 protruding upward are integrally formed at the upper end of the positioning sleeve 332, the positioning blocks 3321 are arranged in a manner corresponding to the soldering wire grooves 12 at the lower end of the commutator body 1, and the top ends of the positioning blocks 3321 are chamfered at both sides to form sharp tops, so that the positioning blocks 3321 can be inserted into the soldering wire seams at the lower end of the commutator body 1 in an aligned manner. The material placing table 33 is radially provided with positioning holes 335 penetrating through two sides of the material placing groove 331, and the positioning holes 335 can be covered by any positioning block 3321 at the upper end of the positioning sleeve 332 in the material placing groove 331, so that an operator can observe the positions of the positioning blocks 3321 through the positioning holes 335 to determine the installation angle of the positioning sleeve 332 in the material placing groove 331, and subsequent processing and positioning of the commutator body 1 are facilitated; an infrared sensor can also be arranged on the material placing table 33, so that infrared rays can penetrate through the positioning hole 335 to realize automatic induction calibration.

As shown in fig. 2, the groove milling mechanism 4 includes a material fixing device 41, an indexing rotation device 42, and a groove milling device 44. The indexing rotation device 42 comprises a servo motor 422 and a rotation seat 421, the servo motor 422 is installed below the frame 2, and the rotation seat 421 is fixedly installed on an output shaft of the servo motor 422 which upwards passes through the frame 2; referring to fig. 6, the material fixing device 41 includes a cylindrical fixing table 411 fixedly installed at the upper end of the rotating base 421, a guide post 4111 matched with the central hole 11 of the commutator body 1 is fixed at the top end of the fixing table 411 along the axial lead, and a plurality of positioning slots 4112 matched with the convex feet 13 at the lower end of the commutator body 1 are uniformly arranged on the side wall of the fixing table 411 along the circumferential direction; referring to fig. 3 and 7, the slot milling device 44 includes a lifting motor 441, a milling cutter holder 442 and a disc-shaped milling cutter 443 which are installed on one side of the fixed table 411, the lifting motor 441 drives the milling cutter holder 442 to vertically move through a screw rod lifting device, the disc-shaped milling cutter 443 is driven by the motor installed on the milling cutter holder 442, and the disc-shaped milling cutter 443 can move to one side of the top end of the fixed table 411 under the driving of the milling cutter holder 442 to mill the commutator body 1 sleeved on the guide post 4111.

As shown in fig. 6, in order to improve the positioning accuracy, the dimensional fit between the positioning groove 4112 and the protruding leg 13 needs to be very tight, which may cause the protruding leg 13 not to be fully inserted into the corresponding positioning groove 4112 when the commutator body 1 is placed on the fixing table 411. Therefore, a downward-pressing lifting cylinder 412 is fixedly installed above the fixed table 411 on the frame 2, referring to fig. 2 and 7, a piston rod of the downward-pressing lifting cylinder 412 is vertically arranged downward, a downward-pressing barrel 413 is fixedly connected to the end of the piston rod along the axial lead of the fixed table 411, a guide hole matched with the guide post 4111 is formed in the bottom of the downward-pressing barrel 413 along the axial lead, the downward-pressing lifting cylinder 412 is used for driving the downward-pressing barrel 413 to downwards press and fix the commutator body 1, the stability of the commutator body 1 is enhanced, and the machining precision is ensured; and the external diameter of the pressing cylinder 413 is smaller than that of the commutator body 1, and the difference between the external diameters is smaller than the depth of the insulation groove 14 to be formed on the surface of the commutator body 1, so that the pressing cylinder 413 is prevented from being damaged when the disc-shaped milling cutter 443 mills the groove downwards.

As shown in fig. 6, the slot milling mechanism 4 further includes a knockout 43. The ejecting device 43 comprises an ejecting sleeve 431 connected to the outer side of the fixed table 411 in a sliding manner along the axis, and an ejecting block 4311 matched with the positioning groove 4112 is integrally formed on the inner wall of the ejecting sleeve 431; an ejection lifting cylinder 432 is fixedly installed on the frame 2, the end of a piston rod of the ejection lifting cylinder 432 is fixedly connected with an ejection plate 433 which is horizontally U-shaped, two side walls in a U-shaped opening of the ejection plate 433 are respectively and oppositely provided with a limit groove 4331, a circle of annular operation edge 4312 is integrally formed on the outer wall of the ejection sleeve 431, and the operation edge 4312 is simultaneously matched with the limit grooves 4331 on two sides. When the commutator body 1 is processed and needs to be ejected, the ejection lifting cylinder 432 extends out of the piston rod to push the ejection plate 433 to move upwards, and the two sides of the operation edge 4312 are both positioned in the limit groove 4331, so that the ejection sleeve 431 can move upwards under the driving of the ejection plate 433, and the ejection block 4311 is used for ejecting the bottom of the convex foot 13, so that the commutator body 1 is ejected upwards to be loose, and the phenomenon that the commutator body 1 cannot be taken down from the fixed table 411 because the convex foot 13 and the positioning groove 4112 are tightly matched is avoided.

As shown in fig. 3, the material moving mechanism 6 includes a three-axis displacement device 61 fixedly mounted on the frame 2, and two material moving clamps 62 mounted on the three-axis displacement device 61, the three-axis displacement device 61 can drive the two material moving clamps 62 to move along three axes XYZ, and the distance between the two material moving clamps 62 is equal to the distance between the material placing table 33 and the fixed table 411 and the distance between the fixed table 411 and the material discharging mechanism. The discharging mechanism in this embodiment is a discharging barrel 5 with an upward opening, the material placing table 33, the fixing table 411 and the discharging barrel 5 are arranged in a straight line, and the horizontal heights of the top ends are close, so that the material moving mechanism 6 can be used for simultaneously clamping the unprocessed commutator body 1 on the material placing table 33 and the processed commutator body 1 on the fixing table 411 and simultaneously conveying the commutator bodies to the next station.

The specific principle of the embodiment is as follows:

the commutator main body 1 to be processed is dropped into the material placing groove 331 on the material placing table 33 one by one through the blanking device 32, and the positioning block 3321 on the positioning sleeve 332 is inserted into the corresponding welding line seam at the lower end of the commutator main body 1 to realize primary positioning; then the material moving clamp 62 moves downwards under the action of the three-axis displacement device 61 and clamps the commutator body 1 to be processed, drives the commutator body 1 to move upwards to be separated from the material placing table 33 and move to the position above the fixing table 411, then the commutator body 1 is sleeved on the guide post 4111 downwards, and the convex leg 13 at the lower end of the commutator body 1 enters the corresponding positioning groove 4112; next, the commutator body 1 is pressed and fixed downwards by a pressing cylinder 413, and the groove milling device 44 is used for groove milling processing; after the machining, the lower pressing barrel 413 moves upwards, the material ejecting device 43 ejects and loosens the commutator main body 1, and finally the machined commutator main body 1 is conveyed to the material discharging barrel 5 by the material moving mechanism 6, and meanwhile, the next commutator main body 1 is moved to the fixed table 411 to perform groove milling machining operation.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.