CN212286712U - Motor casing numerical control anchor clamps - Google Patents

Abstract

The utility model provides a motor casing numerical control anchor clamps. The utility model discloses a fixed axle, tight cover that rises, pull rod, tight cover that rises are fixed in on the fixed axle, rise to sheathe in and be equipped with the grooving, the pull rod runs through in the axle center of fixed axle, pull rod one end is connected with flexible driving piece, flexible driving piece is used for driving the pull rod and removes, the other end of pull rod is equipped with the extrusion portion, pull rod pulling extrusion portion produces the squeezing action to the endotheca wall that rises tight cover and makes the tight cover that rises rise greatly. The motor shell is sleeved outside the tensioning sleeve, the telescopic driving piece pulls the pull rod to move, the extrusion part at the end part of the pull rod can extrude the inner sleeve wall of the tensioning sleeve, the outer sleeve wall of the tensioning sleeve can be gradually deformed and expanded, the outer sleeve wall of the tensioning sleeve can be abutted against the inner shell wall of the motor shell, and then the motor shell is fixed on the fixed shaft; above-mentioned mode of fixed motor casing has increased by a wide margin the effective area of contact between tight cover and the motor casing inside wall that rises, makes motor casing centre gripping stability higher, and the follow-up processingquality of motor casing is better.

Description

Motor casing numerical control anchor clamps

Technical Field

The utility model relates to a numerical control anchor clamps technical field especially relates to a motor casing numerical control anchor clamps.

Background

The structure of the existing motor shell is known from the displayed appearance picture, such as the Chinese appearance design patent motor shell with the publication number of CN305244673S, and the structure comprises a shell main body, wherein a through cavity for a motor stator to be arranged is arranged in the shell main body; since the two ends of the motor housing need to be covered with the motor end covers, the two ends of the housing main body need to be respectively subjected to end face machining.

The current equipment to motor casing processing can set up the three-jaw chuck usually, and the jack catch of three-jaw chuck can stretch into the cavity that runs through of shell main part in, and the three jack catch of three-jaw chuck can move to the outside simultaneously, and the jack catch is inconsistent with the chamber wall that runs through the cavity, and then accomplishes the fixed to motor casing, then adopts the lathe tool to carry out terminal surface processing to the both ends of shell main part.

Although the processing equipment can process the end face of the motor shell, the whole motor shell is less in clamping and supporting action points due to the clamping mode in the form of the three-jaw chuck, the processing stability is low, and the quality of the end face of the processed motor shell is low.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a motor casing numerical control anchor clamps, its centre gripping stability to the motor casing that can effectively strengthen to promote the processingquality of motor casing.

In order to solve the technical problem, the technical scheme of the utility model is that:

a numerical control clamp for a motor casing comprises a fixed shaft, a tensioning sleeve and a pull rod, wherein the tensioning sleeve is fixed on the fixed shaft, a cutting groove is formed in the tensioning sleeve, the pull rod penetrates through the axis of the fixed shaft, a telescopic driving piece is connected to one end of the pull rod and used for driving the pull rod to move, an extrusion part is arranged at the other end of the pull rod, and the extrusion part is pulled by the pull rod to extrude the inner sleeve wall of the tensioning sleeve so as to enable the tensioning sleeve to expand.

According to the technical scheme, the motor shell is sleeved outside the tensioning sleeve, the telescopic driving piece pulls the pull rod to move, the extrusion part at the end part of the pull rod can extrude the inner sleeve wall of the tensioning sleeve, the outer sleeve wall of the tensioning sleeve provided with the cutting groove can be gradually deformed and expanded, the outer sleeve wall of the tensioning sleeve can be abutted against the inner shell wall of the motor shell, and then the motor shell is fixed on the fixed shaft;

above-mentioned mode of fixed motor casing has increased by a wide margin and has risen the effective area of contact between tight cover and the motor casing inside wall, makes the centre gripping stability of motor casing higher, and the quality of the follow-up processing of motor casing is better.

Preferably, two ends of the tensioning sleeve are respectively a first end face and a second end face, the fixed shaft is provided with a contact step, and the first end face and the contact step are mutually abutted;

the cutting groove comprises a first groove body, the length of the first groove body is consistent with the axial direction of the tensioning sleeve, and the first groove body penetrates through the inner sleeve surface, the outer sleeve surface and the second end surface of the tensioning sleeve;

still include first tight ring that rises, be equipped with first wedge face on the tight ring that rises, first tight ring cover that rises is located on the fixed axle, rise be equipped with on the interior cover of tight cover be used for with first wedge face matched with first inclined plane, first inclined plane is located and is close to second terminal surface position, the extrusion portion is used for producing the extrusion force to first tight ring that rises, and then makes first wedge face with first inclined plane produces the extrusion force.

Through the technical scheme, when the telescopic driving piece pulls the pull rod, the pull rod drives the extrusion part to move, the extrusion part pulls the first tensioning ring to move towards the tensioning sleeve, the first wedge-shaped surface of the first tensioning ring can be extruded with the first inclined surface, and the outer sleeve wall of the tensioning sleeve provided with the first groove body can deform and expand greatly;

when the telescopic driving piece pushes the pull rod, the extrusion part can push the first tensioning ring to move in the direction departing from the tensioning sleeve, the first wedge-shaped surface of the first tensioning ring can be separated from the first inclined surface, and the tensioning sleeve can be contracted to the original size;

above-mentioned action process, action stability is high, has further promoted the subsequent processingquality of centre gripping stability and motor casing to the motor casing.

Preferably, the groove end part of the first groove body, which deviates from the second end face, is provided with a first round hole.

Through above-mentioned technical scheme, when the tight cover that rises takes place deformation, first cell body also can the size change naturally, and first round hole can effectively reduce the stress concentration condition that first cell body deviates from the groove end portion of second terminal surface, increases the actual life who rises tight cover.

Preferably, the number of the cutting grooves is at least two, the cutting grooves are uniformly distributed on the circumferential side wall of the tensioning sleeve, each cutting groove further comprises a second groove body, and the second groove bodies penetrate through the inner sleeve surface, the outer sleeve surface and the first end surface of the tensioning sleeve;

the second tensioning ring is sleeved on the fixed shaft and located between the abutting step and the first end face, a second wedge-shaped surface is arranged on the second tensioning ring, and a second inclined surface matched with the second wedge-shaped surface is arranged on the inner sleeve surface of the tensioning sleeve.

Through the technical scheme, when the telescopic driving piece pulls the pull rod, the pull rod drives the extrusion part to move, the extrusion part pulls the first tensioning ring to move towards the tensioning sleeve, the first wedge-shaped surface of the first tensioning ring can be extruded with the first inclined surface, and the outer sleeve wall of the tensioning sleeve provided with the first groove body can deform and expand greatly;

meanwhile, as the tensioning sleeve is subjected to the action of transverse tension, the first end surface and the second tensioning ring can also generate extrusion, the second wedge-shaped surface on the second tensioning ring and the second inclined surface are extruded, and the outer sleeve wall of the tensioning sleeve provided with the second groove body can deform and expand;

so, the first terminal surface of the tight cover that rises and the second terminal surface of the tight cover that rises all can rise to warp, and then produce all-round even extrusion force to motor casing inner housing wall, can further promote again to the centre gripping stability of motor casing and the subsequent processingquality of motor casing.

Preferably, the end part, deviating from the first end face, of the second groove body is provided with a second round hole.

Through above-mentioned technical scheme, when the tight cover that rises takes place deformation, the second cell body also can take place the variation in size naturally, and the second round hole can effectively reduce the stress concentration condition that the second cell body deviates from the groove tip of first terminal surface, increases the actual life who rises tight cover.

Preferably, the extrusion portion includes the extrusion cover, the pull rod tip runs through and threaded connection in the extrusion cover, the pull rod tip is threaded connection still has the nut, the nut is used for locking the extrusion cover position, the extrusion cover tip is used for producing the extrusion force to tight cover one side of rising to first tight ring that rises.

Through the technical scheme, when the extrusion sleeve is required to be connected to the pull rod, the pull rod can penetrate through and is in threaded connection with the extrusion sleeve, then the nut is in threaded connection with the pull rod, and the extrusion sleeve can be directly locked on the pull rod through the nut; when the extrusion cover is dismantled from the pull rod as required, can dismantle the nut from the pull rod earlier, then rotatory extrusion cover can again, dismantle the convenience high.

Preferably, the end part of the fixed shaft is a shaft limiting end, and the extrusion sleeve can abut against the shaft limiting end to limit the limit extrusion distance of the extrusion sleeve to the first tensioning ring.

Through above-mentioned technical scheme, when the pull rod pulling extrusion cover, the extrusion cover can produce the extrusion effect to first tight ring that rises, after first tight ring extrusion rises the tight cover to a certain extent, the spacing end of axle can offset with the extrusion cover, and the pull rod stops the pulling to the limit extrusion distance of limited extrusion cover to first tight ring that rises.

Preferably, the tension device further comprises a squeezing ring, the squeezing ring is sleeved on the fixed shaft, and the squeezing ring is located between the first tensioning ring and the squeezing sleeve.

Through the technical scheme, according to the model sizes of the motor shells of different batches, the extrusion rings with different thicknesses can be replaced, and then the expansion degree of the expansion sleeve can be adjusted.

Preferably, the fixed shaft is provided with a fixed groove, the inner sleeve wall of the tensioning sleeve is provided with a sleeve groove, and a fixed pin rod is arranged between the fixed groove and the sleeve groove.

Through the technical scheme, the fixed pin rod can mutually lock the fixed shaft and the tensioning sleeve so as to transmit the rotating force of the fixed shaft to the tensioning sleeve.

Preferably, the tensioning device further comprises a positioning cylinder, a positioning baffle is mounted at the power end of the positioning cylinder, and the positioning cylinder is used for driving the positioning baffle to move towards or away from the tensioning sleeve.

Through above-mentioned technical scheme, location cylinder promotes the locating baffle and toward being close to the tight cover direction removal that rises, and the motor casing is installed when the tight cover that rises, and the tip of motor casing can lean on tightly and then fix a position the transverse position of motor casing with the locating baffle mutually, and the tight cover that rises and produces the squeezing action to the motor casing, then the locating baffle is toward keeping away from the tight cover direction removal that rises to the location cylinder.

The utility model discloses technical effect mainly embodies in following aspect:

(1) the inner structure of the tension sleeve is innovatively designed, so that a uniform clamping effect can be generated on the motor shell, the clamping stability of the motor shell is effectively enhanced, and the processing quality of the motor shell is improved;

(2) the location centre gripping of motor casing is more accurate.

Drawings

Fig. 1 is a schematic perspective view of the embodiment, which is used to highlight the overall structure of the embodiment;

FIG. 2 is a schematic diagram of a side view of the embodiment;

FIG. 3 is a schematic view of a partial cross-sectional structure of the embodiment, which is used to highlight the internal fitting structure of the tensioning sleeve part;

FIG. 4 is an enlarged view of portion A of FIG. 3;

fig. 5 is a schematic structural diagram of the tensioning sleeve, which is used for displaying the overall structure of the tensioning sleeve in an emphasized manner.

Reference numerals: 1. a fixed shaft; 2. a tensioning sleeve; 3. a first end face; 4. a first inclined plane; 5. a second end face; 6. a second inclined plane; 7. a pull rod; 8. grooving; 81. a first tank body; 82. a second tank body; 9. a telescopic driving member; 10. a pressing section; 101. extruding a sleeve; 102. an extrusion ring; 11. a first tensioning ring; 12. a first wedge-shaped face; 13. a first circular hole; 14. a second tensioning ring; 15. a second wedge-shaped face; 16. a second circular hole; 17. a nut; 18. a shaft limiting end; 19. fixing grooves; 20. sleeving a groove; 21. fixing the pin rod; 22. positioning the air cylinder; 23. positioning a baffle plate; 24. against the step.

Detailed Description

The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings, so that the technical solution of the present invention can be more easily understood and grasped.

A motor casing numerical control clamp, referring to figures 1 and 2, comprises a fixed shaft 1, wherein the fixed shaft 1 can be driven to rotate by a driving source. A pull rod 7 is inserted into the fixed shaft 1, the length direction of the pull rod 7 is the same as the length direction of the fixed shaft 1, the end of the pull rod 7 is inserted into the end face of the fixed shaft 1, and the rod end of the pull rod 7 inserted into the end face of the fixed shaft 1 is provided with an external thread.

Referring to fig. 3, an interference step 24 is provided on the fixing shaft 1.

Referring to fig. 3, 4 and 5, the fixed shaft 1 is further provided with a tensioning sleeve 2, two end faces of the tensioning sleeve 2 are a first end face 3 and a second end face 5 respectively, and the first end face 3 faces one side of the abutting step 24. The tensioning sleeve 2 is provided with at least two cutting grooves 8, the cutting grooves 8 are uniformly distributed on the circumferential side wall of the tensioning sleeve 2, each cutting groove 8 comprises a first groove body 81 and a second groove body 82, the groove length of each first groove body 81 and the groove length of each second groove body 82 are consistent with the axial direction of the tensioning sleeve 2, each first groove body 81 penetrates through the inner and outer sleeve surfaces and the second end surface 5 of the tensioning sleeve 2, and each second groove body 82 penetrates through the inner and outer sleeve surfaces and the first end surface 3 of the tensioning sleeve 2.

Referring to fig. 2 and 5, a first circular hole 13 is disposed at a groove end of the first groove body 81 away from the second end face 5, and the first circular hole 13 can reduce stress concentration generated by the first groove body 81 when the side wall of the tensioning sleeve 2 is expanded.

Referring to fig. 2 and 5, a second round hole 16 is formed at a groove end portion of the second groove body 82 away from the first end surface 3, and the second round hole 16 can reduce stress concentration generated by the second groove body 82 when the side wall of the tensioning sleeve 2 is expanded.

Referring to fig. 4 and 5, in order to fix the tension sleeve 2, a strip-shaped fixing groove 19 is formed on the outer circumferential side wall of the fixing shaft 1, a sleeve groove 20 is formed on the inner sleeve wall of the tension sleeve 2, and a fixing pin 21 is installed between the fixing groove 19 and the sleeve groove 20. When the fixed shaft 1 rotates, the tensioning sleeve 2 can synchronously rotate along with the fixed shaft.

Referring to fig. 3 and 4, a first tensioning ring 11 is further arranged on the fixed shaft 1, a first wedge-shaped surface 12 is arranged on the first tensioning ring 11, the fixed shaft 1 is sleeved with the first tensioning ring 11, a first inclined surface 4 matched with the first wedge-shaped surface 12 is arranged on an inner sleeve surface of the tensioning sleeve 2, and the first inclined surface 4 is located near the second end surface 5; when the first tensioning ring 11 and the tensioning sleeve 2 move in the opposite direction, the first wedge-shaped surface 12 can be extruded with the first inclined surface 4, and the tensioning sleeve 2 provided with the second groove body 82 is expanded.

Referring to fig. 3 and 4, a second tensioning ring 14 is arranged between the first end surface 3 and the abutting step 24, the second tensioning sleeve 2 abuts against the abutting step 24, the second tensioning ring 14 is sleeved on the fixed shaft 1, a second wedge surface 15 is arranged on the second tensioning ring 14, and a second inclined surface 6 matched with the second wedge surface 15 is arranged on the inner sleeve surface of the tensioning sleeve 2; when the tensioning sleeve 2 and the second tensioning ring 14 move in opposite directions, the tensioning sleeve 2 provided with the first groove 81 is expanded.

Referring to fig. 3, a telescopic driving member 9 is connected to an end of the pull rod 7, the telescopic driving member 9 may be an air cylinder or an oil cylinder, and the telescopic driving member 9 is configured to drive the pull rod 7 to move along a length direction of the tensioning sleeve 2.

Referring to fig. 2 and 3, the end of the tie rod 7 provided with the external thread is provided with a pressing portion 10. The extrusion part 10 comprises an extrusion sleeve 101, the end part of the pull rod 7 penetrates through the extrusion sleeve 101, the extrusion sleeve 101 is in threaded connection with the external thread of the pull rod 7, the end part of the pull rod 7 is also in threaded connection with a nut 17, and the nut 17 is used for locking the position of the extrusion sleeve 101.

Referring to fig. 3 and 4, the clamping device further comprises a pressing ring 102, the pressing ring 102 is mounted on the fixed shaft 1, and the pressing ring 102 is located between the first tensioning ring 11 and the pressing sleeve 101.

Referring to fig. 3, the end of the fixed shaft 1 is a shaft limiting end 18, and the pressing sleeve 101 can abut against the shaft limiting end 18 to limit the limit pressing distance of the pressing sleeve 101 to the first tensioning ring 11.

In addition, referring to fig. 1 and fig. 2, the tensioning device further comprises a positioning cylinder 22, a positioning baffle 23 is installed at a power end of the positioning cylinder 22, and the positioning cylinder 22 is used for driving the positioning baffle 23 to move towards or away from the tensioning sleeve 2.

In the specific use process:

the positioning cylinder 22 drives the positioning baffle 23 to one side of the tensioning sleeve 2, the motor casing to be processed is sleeved outside the tensioning sleeve 2, the end part of the motor casing is tightly abutted against the positioning baffle 23, the telescopic driving member 9 pulls the pull rod 7, the pull rod 7 drives the extrusion sleeve 101 to move to one side of the tensioning sleeve 2, the extrusion sleeve 101 extrudes the extrusion ring 102 and the first tensioning ring 11, the first wedge-shaped surface 12 of the first tensioning ring 11 extrudes the first inclined surface 4 to expand the outer casing wall of the tensioning sleeve 2 provided with the second groove body 82, meanwhile, the tensioning sleeve 2 and the second tensioning ring 14 move oppositely, the second wedge-shaped surface 15 on the second tensioning ring 14 extrudes the second inclined surface 6 to expand the outer casing wall of the tensioning sleeve 2 provided with the first groove body 81, at the moment, the outer casing wall of the tensioning sleeve 2 can be extruded with the inner casing wall of the motor casing, and the motor casing can be firmly fixed on the tensioning sleeve 2, the positioning cylinder 22 drives the positioning baffle plate 23 to move towards the side departing from the tensioning sleeve 2, and the fixed shaft 1 can drive the motor shell to stably rotate.

After the machining is finished, the telescopic driving part 9 reversely pushes the pull rod 7, the pull rod 7 drives the extrusion sleeve 101 to move towards the side away from the tensioning sleeve 2, the extrusion force among the first tensioning ring 11, the tensioning sleeve 2 and the second tensioning ring 14 disappears, the tensioning sleeve 2 retracts to the original size, and the motor shell can be separated from the tensioning sleeve 2.

Of course, the above is only a typical example of the present invention, and besides, the present invention can also have other various specific embodiments, and all technical solutions adopting equivalent replacement or equivalent transformation are all within the scope of the present invention as claimed.

Claims (10)

1. The utility model provides a motor casing numerical control anchor clamps which characterized by: the tensioning sleeve (2) is fixed on the fixed shaft (1), a cutting groove (8) is formed in the tensioning sleeve (2), the pull rod (7) penetrates through the axis of the fixed shaft (1), one end of the pull rod (7) is connected with a telescopic driving piece (9), the telescopic driving piece (9) is used for driving the pull rod (7) to move, an extrusion part (10) is arranged at the other end of the pull rod (7), and the pull rod (7) pulls the extrusion part (10) to extrude the inner sleeve wall of the tensioning sleeve (2) to enable the tensioning sleeve (2) to expand.

2. The motor casing numerical control fixture as claimed in claim 1, which is characterized in that: the two ends of the tensioning sleeve (2) are respectively a first end face (3) and a second end face (5), the fixed shaft (1) is provided with a contact step (24), and the first end face (3) and the contact step (24) are mutually abutted;

the cutting groove (8) comprises a first groove body (81), the length of the first groove body (81) is consistent with the axial direction of the tensioning sleeve (2), and the first groove body (81) penetrates through the inner and outer sleeve surfaces and the second end surface (5) of the tensioning sleeve (2);

still include first tight ring (11) that rises, be equipped with first wedge (12) on first tight ring (11) that rises, fixed axle (1) is located to first tight ring (11) cover, rise to be equipped with on the interior cover of tight cover (2) and be used for with first wedge (12) matched with first inclined plane (4), first inclined plane (4) are located and are close to second terminal surface (5) position, extrusion portion (10) are used for producing the extrusion force to first tight ring (11) that rises, and then make first wedge (12) with first inclined plane (4) produce the extrusion force.

3. The motor casing numerical control fixture as claimed in claim 2, wherein: the end part, deviating from the second end face (5), of the first groove body (81) is provided with a first round hole (13).

4. The motor casing numerical control fixture as claimed in claim 2, wherein:

the number of the cutting grooves (8) is at least two, the cutting grooves (8) are uniformly distributed on the circumferential side wall of the tensioning sleeve (2), each cutting groove (8) further comprises a second groove body (82), and the second groove bodies (82) penetrate through the inner and outer sleeve surfaces and the first end surface (3) of the tensioning sleeve (2);

the tensioning device is characterized by further comprising a second tensioning ring (14), wherein the second tensioning ring (14) is sleeved on the fixing shaft (1), the second tensioning ring (14) is located between the abutting step (24) and the first end face (3), a second wedge-shaped face (15) is arranged on the second tensioning ring (14), and a second inclined face (6) matched with the second wedge-shaped face (15) is arranged on the inner sleeve face of the tensioning sleeve (2).

5. The motor casing numerical control fixture as claimed in claim 4, which is characterized in that: and a second round hole (16) is formed in the end part, deviating from the first end face (3), of the second groove body (82).

6. The motor casing numerical control fixture as claimed in any one of claims 1 to 5, wherein: the extrusion part (10) comprises an extrusion sleeve (101), the end part of the pull rod (7) penetrates through and is in threaded connection with the extrusion sleeve (101), the end part of the pull rod (7) is further in threaded connection with a nut (17), the nut (17) is used for locking the position of the extrusion sleeve (101), and the end part of the extrusion sleeve (101) is used for generating extrusion force to one side of the tensioning sleeve (2) for the first tensioning ring (11).

7. The motor casing numerical control fixture as claimed in claim 6, which is characterized in that: the end part of the fixed shaft (1) is a shaft limiting end (18), and the extrusion sleeve (101) can abut against the shaft limiting end (18) to limit the limit extrusion distance of the extrusion sleeve (101) to the first tensioning ring (11).

8. The motor casing numerical control fixture as claimed in claim 7, wherein: the device is characterized by further comprising a squeezing ring (102), wherein the squeezing ring (102) is sleeved on the fixed shaft (1), and the squeezing ring (102) is located between the first tensioning ring (11) and the squeezing sleeve (101).

9. The motor casing numerical control fixture as claimed in any one of claims 1 to 5, wherein: the fixing shaft (1) is provided with a fixing groove (19), the inner sleeve wall of the tensioning sleeve (2) is provided with a sleeve groove (20), and a fixing pin rod (21) is arranged between the fixing groove (19) and the sleeve groove (20).

10. The motor casing numerical control fixture as claimed in any one of claims 1 to 5, wherein: the tensioning device is characterized by further comprising a positioning cylinder (22), a positioning baffle (23) is mounted on the power end of the positioning cylinder (22), and the positioning cylinder (22) is used for driving the positioning baffle (23) to move towards or away from the tensioning sleeve (2).

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