CN218964227U - Seven-key arc stator broach - Google Patents

Abstract

The application relates to a seven-key arc stator broach, which relates to the field of broaches and comprises a fixed rod and cutter teeth, wherein one end of the fixed rod is provided with a front handle, a front neck and a front guide block, and the other end of the fixed rod is provided with a rear handle and a rear guide block; the cutter teeth comprise coarse broaches and fine broaches, the coarse broaches are gradually-formed broaches, at least three coarse broaches are arranged and uniformly sleeved on the fixing rod along the length direction of the fixing rod, and the coarse broaches are positioned between the front guide block and the rear guide block and close to one side of the front guide block; the finish broach is a same-profile broach, at least two finish broachs are arranged, the finish broachs are uniformly sleeved on the fixing rod along the length direction of the fixing rod, and the finish broach is positioned between the front guide block and the rear guide block and is close to one side of the rear guide block. The processing precision to the stator sleeve can be improved, and the defect that the common broach is easy to cause the stator sleeve to twist and bend is overcome.

Description

Seven-key arc stator broach

Technical Field

The application relates to the field of broaches, in particular to a seven-key arc stator broach.

Background

The cycloid pump is an important part in a hydraulic steering mechanism, and belongs to cycloid pin wheel meshing pairs, a pin wheel rotor performs planetary motion in a stator, and a stator broach is a special broach tool for processing cycloid hydraulic motors and stator parts (outer rotors) of a hydraulic steering device.

For machining the cycloid pump stator sleeve, a broaching process is generally adopted at home and abroad, and a common gradually-formed broach is used for machining.

When the common gradually-formed broach is used for processing the stator sleeve, the length of the broach is long, so that the broach is easy to twist and bend, and the uniformity of the equal division and radial dimension of the stator sleeve is not easy to ensure.

Disclosure of Invention

In order to overcome the defect that a common broach is easy to cause the torsion and bending of a stator sleeve, the application provides a seven-key arc stator broach.

The application provides a seven key circular arc stator broach adopts following technical scheme:

a seven-key arc stator broach comprises a fixed rod and cutter teeth, wherein one end of the fixed rod is provided with a front handle, a front neck and a front guide block, and the other end of the fixed rod is provided with a rear handle and a rear guide block;

the cutter teeth comprise coarse broaches and fine broaches, the coarse broaches are gradually-formed broaches, at least three coarse broaches are arranged and uniformly sleeved on the fixing rod along the length direction of the fixing rod, and the coarse broaches are positioned between the front guide block and the rear guide block and close to one side of the front guide block; the finish broach is a same-profile broach, at least two finish broachs are arranged, the finish broachs are uniformly sleeved on the fixing rod along the length direction of the fixing rod, and the finish broach is positioned between the front guide block and the rear guide block and is close to one side of the rear guide block.

Through adopting above-mentioned technical scheme, the stator cover that waits to process can carry out gradually the processing through thick broach, then carries out with the profile formula processing through the smart broach to can avoid the inside of stator cover to take place distortion or crooked, improve the defect that ordinary broach leads to stator cover distortion and crooked easily.

Optionally, seven evenly distributed tooth edges are arranged in the circumferential direction of the rough broach and the fine broach, and the tooth edges are obliquely arranged towards one side close to the front guide block.

By adopting the technical scheme, the stator with seven evenly distributed inner grooves can be processed.

Optionally, an arc groove is arranged between two adjacent tooth edges on the same fine broach or coarse broach.

By adopting the technical scheme, the processed stator can be arc-shaped between two adjacent inner grooves, and the rotor can conveniently move in the stator.

Optionally, the front guide block is arc-shaped along two ends of the length direction of the fixing rod.

By adopting the technical scheme, the stator sleeve can conveniently penetrate the lead block.

Optionally, the front handle and the front neck are integrally arranged, and the front neck is detachably connected with the front guide block; the rear handle is also detachably connected with the rear guide block; one end of the fixed rod is detachably connected with the front guide block, and the other end of the fixed rod is detachably connected with the rear guide block; the cutter teeth are detachably connected with the fixing rod.

Through adopting above-mentioned technical scheme, the cutter tooth can be dismantled from the dead lever, is convenient for to the cleanness and the change of cutter tooth.

Optionally, a first positioning groove, a first limiting groove and a first connecting component are arranged in the front neck, and the first connecting component comprises a first driving telescopic rod, a first driven telescopic rod and a first connecting rod;

the first active telescopic rod is sleeved with a first spring, the first active telescopic rod and the first spring are both arranged in the first positioning groove, one end of the first active telescopic rod is fixedly connected with a first positioning block, and the first positioning block is arranged in the first positioning groove in a sliding manner along the radial direction of the front neck;

the first driven telescopic rod is arranged in the first limiting groove, one end of the first driven telescopic rod is fixedly connected with a first limiting block, and the first limiting block is arranged in the first limiting groove in a sliding manner along the radial direction of the front neck;

a first communication groove is formed between the first positioning groove and the first limiting groove, the first connecting rod is arranged in the first communication groove in a sliding manner along the radial direction of the front neck, one end of the first connecting rod is fixedly connected with the first positioning block, and the other end of the first connecting rod is fixedly connected with the first limiting block;

the first clamping groove is formed in the front guide block, and the first limiting block can be clamped in the first clamping groove.

Through adopting above-mentioned technical scheme, the user can drive first stopper and enter into first spacing inslot through pressing first locating block, can penetrate the front neck in the front guide block this moment, when first stopper aim at first draw-in groove, release first locating block can accomplish the connection with front neck and front guide block in first draw-in groove with first stopper joint, this connected mode makes the simple operation of installation and dismantlement, has improved the convenience of operation.

Optionally, a second positioning groove, a second limiting groove and a second connecting component are arranged in the fixed rod, and the second connecting component comprises a second driving telescopic rod, a second driven telescopic rod and a second connecting rod;

the second active telescopic rod is sleeved with a second spring, the second active telescopic rod and the second spring are both arranged in the second positioning groove, one end of the second active telescopic rod is fixedly connected with a second positioning block, and the second positioning block is arranged in the second positioning groove in a sliding manner along the radial direction of the fixed rod;

the second driven telescopic rod is arranged in the second limiting groove, one end of the second driven telescopic rod is fixedly connected with a second limiting block, and the second limiting block is arranged in the second limiting groove in a sliding manner along the radial direction of the fixed rod;

a second communication groove is formed between the second positioning groove and the second limiting groove, the second connecting rod is arranged in the second communication groove in a sliding manner along the radial direction of the fixed rod, one end of the second connecting rod is fixedly connected with the second positioning block, and the other end of the second connecting rod is fixedly connected with the second limiting block;

the lead block is internally provided with a second clamping groove, and the second limiting block can be clamped in the second clamping groove.

Through adopting above-mentioned technical scheme, the user can drive the second stopper through pressing the second locating piece and enter into the second spacing inslot, can penetrate the guide block in the front with the dead lever this moment, aim at the second draw-in groove when the second stopper, and release the second locating piece can be with second stopper joint in the second draw-in groove, can accomplish the connection with dead lever and guide block in front, this connected mode makes the installation with dismantle the simple operation, has improved the convenience of operation.

Optionally, a plurality of third limit grooves are uniformly formed in the fixing rod along the circumferential direction of the fixing rod, and the number of the third limit grooves is equal to the sum of the number of the fine broach and the number of the coarse broach;

a third limiting block is arranged in the third limiting groove along the radial sliding of the fixed rod, a third connecting groove and a third connecting rod are arranged on one side, far away from the second connecting rod, of the second positioning block, the third connecting rod is arranged in the third connecting groove along the radial sliding of the fixed rod, one end of the third connecting rod is fixedly connected with the second positioning block, and each third limiting block is fixedly connected with the third connecting rod;

and the rough broach and the fine broach are internally provided with third clamping grooves, and the third limiting block can be clamped in the third clamping grooves.

Through adopting above-mentioned technical scheme, when the user presses the second locating piece, can drive the third stopper and enter into the third spacing inslot to can wear coarse broach and smart broach to establish on the dead lever in the slip, when the third stopper aims at the third draw-in groove, the installation to coarse broach or smart broach can be accomplished to the second locating piece of releasing, and this connected mode has improved the convenience of installation and dismantlement.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through the arrangement of the rough broach and the fine broach, the stator sleeve to be processed can be gradually processed through the rough broach and then is processed through the fine broach in the same profile, so that the internal distortion or bending of the stator sleeve can be avoided, and the defect that the common broach is easy to cause the distortion and bending of the stator sleeve is overcome;

2. by arranging seven tooth edges and arc grooves between adjacent tooth edges, the processed stator can be provided with seven evenly distributed inner grooves, and the adjacent two inner grooves are arc-shaped, so that the rotor can conveniently move in the stator;

3. through the setting of first coupling assembling, second coupling assembling and third coupling assembling, improved the convenience of seven key circular arc stator broachs installation and dismantlement.

Drawings

FIG. 1 is a schematic overall structure of a first embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of a second embodiment of the present application;

FIG. 3 is an enlarged schematic view of a portion A of FIG. 2;

FIG. 4 is a partially enlarged schematic illustration of portion B of FIG. 2;

FIG. 5 is an enlarged schematic view of a portion C of FIG. 2;

fig. 6 is a partially enlarged schematic view of the portion D in fig. 2.

Reference numerals illustrate: 1. a fixed rod; 11. a second connection assembly; 111. the second active telescopic rod; 112. a second positioning block; 113. a second spring; 114. a second connecting rod; 115. a second driven telescopic rod; 116. a second limiting block; 117. a second positioning groove; 118. the second limit groove; 119. a second communication groove; 12. a third connection assembly; 121. a third telescopic rod; 122. a third limiting block; 123. a third connecting rod; 124. a third communication groove; 125. a third limit groove; 13. a fourth connection assembly; 131. a fourth active telescopic rod; 132. a fourth positioning block; 133. a fourth spring; 134. a fourth connecting rod; 135. a fourth driven telescopic rod; 136. a fourth limiting block; 137. a fourth positioning groove; 138. a fourth limit groove; 139. a fourth communication groove; 2. cutter teeth; 21. a fine broach; 22. rough broaching; 23. a third clamping groove; 3. a front handle; 4. a rear handle; 41. a fifth connection assembly; 411. a fifth active telescopic rod; 412. a fifth positioning block; 413. a fifth spring; 414. a fifth connecting rod; 415. a fifth driven telescopic rod; 416. a fifth limiting block; 417. a fifth positioning groove; 418. a fifth limit groove; 419. a fifth communication groove; 5. a front neck; 51. a first connection assembly; 511. the first active telescopic rod; 512. a first positioning block; 513. a first spring; 514. a first connecting rod; 515. a first driven telescopic rod; 516. a first limiting block; 517. a first positioning groove; 518. a first limit groove; 519. a first communication groove; 6. a leader block; 61. a first rack; 62. a first communication port; 63. a first clamping groove; 64. a second communication port; 65. a second clamping groove; 7. a rear guide block; 71. a second rack; 72. a third communication port; 73. a fourth clamping groove; 74. a fourth communication port; 75. a fifth clamping groove; 8. a tooth edge; 81. an arc-shaped groove.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-6.

The embodiment of the application discloses a seven-key arc stator broach.

Embodiment one:

referring to fig. 1, a seven-key circular arc stator broach includes a fixing rod 1, cutter teeth 2, a front shank 3, a rear shank 4, a front neck 5, a front guide block 6, and a rear guide block 7; wherein, cutter tooth 2 wears to establish on dead lever 1, and preceding guide block 6 is fixed to be set up in the one end of dead lever 1, and preceding handle 3 is located preceding guide block 6 and keeps away from one side of dead lever 1 and set up with preceding neck 5 an organic whole, and preceding neck 5 is located preceding handle 3 and is close to one side of preceding guide block 6 and with preceding guide block 6 fixed connection, and back guide block 7 is located dead lever 1 and keeps away from one end of preceding guide block 6 and with dead lever 1 fixed connection, and back handle 4 is located back guide block 7 and keeps away from one side of dead lever 1 and with back guide block 7 fixed connection.

Referring to fig. 1, a fixing rod 1 is horizontally arranged, and its longitudinal section is circular; the front handle 3 is also horizontally arranged, the longitudinal section of the front handle is also round, and the front handle is coaxially arranged with the fixed rod 1; the front neck 5 is also horizontally arranged, the longitudinal section of the front neck is also circular, and the front neck is also coaxially arranged with the fixed rod 1; the longitudinal section of the front neck 5, which is a section near one end of the front handle 3, gradually increases toward the direction near the fixing rod 1.

Referring to fig. 1, the cutter teeth 2 include a rough broach 22 and a fine broach 21, the rough broach 22 is fixedly arranged on the fixed rod 1 in a penetrating manner and is coaxially arranged with the fixed rod 1, at least three rough broachs 22 are arranged along the axial direction of the fixed rod 1, and the rough broach 22 is positioned on one side of the fixed rod 1 close to the front guide block 6; the radial dimension of the rough broach 22 gradually increases along the direction from the front guide block 6 toward the rear guide block 7, and the rough broach 22 can gradually broach the stator sleeve; seven evenly distributed tooth edges 8 are fixedly connected to the rough broach 22 along the circumferential direction of the rough broach, and an arc-shaped groove 81 is arranged between two adjacent tooth edges 8; the tooth edge 8 on the rough broach 22 is disposed obliquely toward the side near the leader block 6.

Referring to fig. 1, the finish broach 21 is also fixedly arranged on the fixing rod 1 in a penetrating manner and is coaxially arranged with the fixing rod 1, at least two finish broachs 21 are arranged along the axial direction of the fixing rod 1, and the finish broach 21 is positioned on one side of the fixing rod 1 close to the rear guide block 7; the size of each fine broach 21 is equal, and the fine broach 21 can carry out the same-profile broaching on the stator sleeve; seven evenly distributed tooth edges 8 are also fixedly connected to the fine broach 21 along the circumferential direction of the fine broach, and an arc-shaped groove 81 is also arranged between two adjacent tooth edges 8; the tooth 8 on the fine broach 21 is also inclined toward the side near the lead block 6 at an angle equal to the angle of inclination of the tooth 8 on the rough broach 22.

Referring to fig. 1, the front guide block 6 is also horizontally arranged, the longitudinal section of the front guide block is circular, the front guide block is coaxially arranged with the fixed rod 1, and fixedly arranged on the fixed rod 1 in a penetrating manner, the front guide block 6 is fixedly connected with seven first racks 61 which are arranged opposite to the tooth edge 8 in the horizontal direction along the circumferential direction of the front guide block, and the length direction of the first racks 61 is the same as the length direction of the fixed rod 1; the longitudinal direction of the leader block 6 is the same as the longitudinal direction of the fixing lever 1, and the longitudinal sections at both ends of the leader block 6 in the longitudinal direction are gradually reduced toward a direction away from the center of the leader block 6 in the longitudinal direction, and are arc-shaped.

Referring to the figure, the rear guide block 7 is also horizontally arranged, the longitudinal section of the rear guide block 7 is also circular, the rear guide block is coaxially arranged with the fixed rod 1 and fixedly arranged on the fixed rod 1 in a penetrating way, seven second racks 71 which are arranged opposite to the first racks 61 in the horizontal direction are fixedly connected with the rear guide block 7 along the circumferential direction, and the length direction of the second racks 71 is the same as the length direction of the fixed rod 1; the radial dimension of the rear guide block 7 is greater than the radial dimension of the front guide block 6.

The implementation principle of the first embodiment of the application is as follows: the stator sleeve to be processed is sleeved on the front handle 3, sleeved on one end of the front guide block 6 far away from the fixed rod 1 through the front neck 5, and subjected to gradual broaching through the rough broach 22 after passing through the front guide block 6; after the progressive broaching, the fine broaching tool 21 performs the same-profile broaching, calibration and positioning; and then passes through the rear guide 7 and the rear handle 4 to be discharged from the rear handle 4.

Embodiment two:

referring to fig. 2, the present embodiment is different from the first embodiment in that a first connection assembly 51 is provided on a front neck 5, and the front neck 5 is detachably and fixedly connected with a front guide block 6 through the first connection assembly 51; the fixed rod 1 is provided with a second connecting component 11, a third connecting component 12 and a fourth connecting component 13, the front guide block 6 is detachably and fixedly connected with the fixed rod 1 through the second connecting component 11, and the rear guide block 7 is detachably connected with the fixed rod 1 through the fourth connecting component 13; the rough broach 22 and the fine broach 21 are detachably and fixedly connected with the fixed rod 1 through the third connecting component 12; the rear handle 4 is provided with a fifth connecting component 41, and the rear handle 4 is detachably and fixedly connected with the rear guide block 7 through the fifth connecting component 41.

Referring to fig. 3, a plurality of first positioning grooves 517 are uniformly distributed on one side of the front neck 5 far from the fixed rod 1 along the circumferential direction thereof, and the depth direction of the first positioning grooves 517 coincides with the radial direction of the front neck 5; the first connection assembly 51 includes a first driving telescopic rod 511, a first positioning block 512, a first spring 513, a first connection rod 514, a first driven telescopic rod 515, and a first stopper 516.

Referring to fig. 3, the first active telescopic rod 511 is fixedly connected with the bottom of the first positioning groove 517, and the length direction thereof is the same as the depth direction of the first positioning groove 517, and the first positioning block 512 is fixedly connected with one end of the first active telescopic rod 511 away from the bottom of the first positioning groove 517; the first positioning block 512 is capable of sliding in the first positioning groove 517 in the depth direction of the first positioning groove 517; the first spring 513 is fixedly sleeved on the first active telescopic rod 511, one end of the first spring 513 is fixedly connected with the first positioning block 512, and the other end of the first spring 513 is fixedly connected with the bottom surface of the first positioning groove 517.

Referring to fig. 3, a plurality of first limiting grooves 518 are formed in the front neck 5, which are uniformly distributed along the circumferential direction of the front neck, on one side of the front neck, which is close to the fixing rod 1, and the first limiting grooves 518 and the first positioning grooves 517 are arranged in a manner of being opposite to each other in the horizontal direction.

Referring to fig. 3, the first driven telescopic rod 515 is fixedly connected with the bottom of the first limiting groove 518, and the length direction of the first driven telescopic rod 515 is the same as the depth direction of the first limiting groove 518, and the first limiting block 516 is fixedly connected with one end of the first driven telescopic rod 515, which is far away from the bottom of the first limiting groove 518; the first limiting block 516 can slide in the first limiting groove 518 along the depth direction of the first limiting groove 518; a first communicating groove 519 is arranged between the first limiting groove 518 and the first positioning groove 517, the first connecting rod 514 is horizontally arranged and is arranged in the first communicating groove 519 in a sliding way along the radial direction of the front neck 5, one end of the first connecting rod 514, which is close to the first positioning groove 517, is fixedly connected with the first positioning block 512, and one end, which is far away from the first positioning block 512, is fixedly connected with the first limiting block 516.

Referring to fig. 3, a first communication port 62 is formed at one end of the front guide block 6, the size of the first communication port 62 is matched with the size of the front neck 5, and the front neck 5 can penetrate into the first communication port 62; a plurality of first clamping grooves 63 are formed in the inner wall of the first communication port 62 along the circumferential direction of the inner wall, the number of the first clamping grooves 63 is equal to that of the first limiting blocks 516, the size of the first clamping grooves 63 is matched with that of the first limiting blocks 516, and when the first limiting blocks 516 are aligned with the first clamping grooves 63, the first limiting blocks 516 can be clamped in the first clamping grooves 63.

When the front neck 5 is connected with the front guide block 6, the first positioning block 512 is pressed towards the direction close to the bottom of the first positioning groove 517, the first positioning block 512 drives the first telescopic rod to be shortened, the first spring 513 is driven to be compressed, the first connecting rod 514 is driven to move towards the axis direction of the front neck 5, and the first limiting block 516 is driven to move towards the direction close to the bottom of the first limiting groove 518; when the top of the first limiting block 516 enters the first limiting groove 518, the front neck 5 is inserted into the front guide block 6, and when the first limiting block 516 is aligned with the first clamping groove 63, the first positioning block 512 is released, so that the first limiting block 516 is clamped in the first clamping groove 63, and the front neck 5 and the front guide block 6 are connected.

Referring to fig. 4, a plurality of second positioning grooves 117 are uniformly distributed on one side of the fixed rod 1, which is close to the leader block 6, along the circumferential direction of the fixed rod, and the depth direction of the second positioning grooves 117 coincides with the radial direction of the fixed rod 1; the second connection assembly 11 includes a second driving telescopic rod 111, a second positioning block 112, a second spring 113, a second connection rod 114, a second driven telescopic rod 115, and a second stopper 116.

Referring to fig. 4, the second active telescopic rod 111 is fixedly connected with the bottom of the second positioning groove 117, and the length direction of the second active telescopic rod is the same as the depth direction of the second positioning groove 117, and the second positioning block 112 is fixedly connected with one end of the second active telescopic rod 111 away from the bottom of the second positioning groove 117; the second positioning block 112 is capable of sliding in the second positioning groove 117 along the depth direction of the second positioning groove 117; the second spring 113 is fixedly sleeved on the second active telescopic rod 111, one end of the second spring 113 is fixedly connected with the second positioning block 112, and the other end of the second spring 113 is fixedly connected with the bottom surface of the second positioning groove 117.

Referring to fig. 4, a plurality of second limiting grooves 118 are formed in the fixing rod 1 near one end of the leader block 6 along the circumferential direction thereof, and the second limiting grooves 118 and the second positioning grooves 117 are arranged opposite to each other in the horizontal direction.

Referring to fig. 4, the second driven telescopic rod 115 is fixedly connected with the bottom of the second limiting groove 118, and the length direction of the second driven telescopic rod is the same as the depth direction of the second limiting groove 118, and the second limiting block 116 is fixedly connected with one end of the second driven telescopic rod 115 away from the bottom of the second limiting groove 118; the second limiting block 116 can slide in the second limiting groove 118 along the depth direction of the second limiting groove 118; a second communicating groove 119 is arranged between the second limiting groove 118 and the second positioning groove 117, the second connecting rod 114 is horizontally arranged and is arranged in the second communicating groove 119 in a sliding manner along the radial direction of the fixed rod 1, one end, close to the second positioning groove 117, of the second connecting rod 114 is fixedly connected with the second positioning block 112, and one end, far away from the second positioning block 112, is fixedly connected with the second limiting block 116.

Referring to fig. 4, a second communication port 64 is formed at one end of the leader block 6 away from the first communication port 62, the size of the second communication port 64 is adapted to the size of the fixing rod 1, and the fixing rod 1 can penetrate into the second communication port 64; a plurality of second clamping grooves 65 are formed in the inner wall of the second communication port 64 along the circumferential direction of the second communication port, the number of the second clamping grooves 65 is equal to that of the second limiting blocks 116, the size of the second clamping grooves 65 is matched with that of the second limiting blocks 116, and when the second limiting blocks 116 are aligned with the second clamping grooves 65, the second limiting blocks 116 can be clamped in the second clamping grooves 65.

When the fixed rod 1 is connected with the front guide block 6, the second positioning block 112 is pressed towards the direction approaching to the bottom of the second positioning groove 117, the second positioning block 112 drives the second telescopic rod to be shortened, the second spring 113 is driven to be compressed, the second connecting rod 114 is driven to move towards the axis direction of the fixed rod 1, and the second limiting block 116 is driven to move towards the direction approaching to the bottom of the second limiting groove 118; when the top of the second limiting block 116 enters the second limiting groove 118, the fixing rod 1 is inserted into the front guide block 6, and when the second limiting block 116 is aligned to the second clamping groove 65, the second positioning block 112 is released, so that the second limiting block 116 is clamped in the second clamping groove 65, and the fixing rod 1 and the front guide block 6 are connected.

Referring to fig. 5, a plurality of fourth positioning grooves 137 are uniformly distributed on one side of the fixing rod 1, which is close to the rear guide block 7, along the circumferential direction of the fixing rod, and the depth direction of the fourth positioning grooves 137 coincides with the radial direction of the fixing rod 1; the fourth connecting assembly 13 includes a fourth driving telescopic rod 131, a fourth positioning block 132, a fourth spring 133, a fourth connecting rod 134, a fourth driven telescopic rod 135, and a fourth stopper 136.

Referring to fig. 5, the fourth active telescopic rod 131 is fixedly connected with the bottom of the fourth positioning groove 137, and the length direction thereof is the same as the depth direction of the fourth positioning groove 137, and the fourth positioning block 132 is fixedly connected with one end of the fourth active telescopic rod 131 away from the bottom of the fourth positioning groove 137; the fourth positioning block 132 is capable of sliding in the fourth positioning groove 137 in the depth direction of the fourth positioning groove 137; the fourth spring 133 is fixedly sleeved on the fourth active telescopic rod 131, one end of the fourth spring 133 is fixedly connected with the fourth positioning block 132, and the other end of the fourth spring 133 is fixedly connected with the bottom surface of the fourth positioning groove 137.

Referring to fig. 5, a plurality of fourth limiting grooves 138 are formed in the fixing rod 1 near one end of the rear guide block 7 along the circumferential direction of the fixing rod, and the fourth limiting grooves 138 and the fourth positioning grooves 137 are arranged in a horizontally opposite mode.

Referring to fig. 5, the fourth driven telescopic rod 135 is fixedly connected with the bottom of the fourth limiting groove 138, and the length direction of the fourth driven telescopic rod is the same as the depth direction of the fourth limiting groove 138, and the fourth limiting block 136 is fixedly connected with one end of the fourth driven telescopic rod 135, which is far away from the bottom of the fourth limiting groove 138; the fourth stopper 136 is capable of sliding in the fourth stopper groove 138 in the depth direction of the fourth stopper groove 138; a fourth communicating groove 139 is arranged between the fourth limiting groove 138 and the fourth positioning groove 137, the fourth connecting rod 134 is horizontally arranged and is arranged in the fourth communicating groove 139 along the radial sliding of the fixed rod 1, one end of the fourth connecting rod 134, which is close to the fourth positioning groove 137, is fixedly connected with the fourth positioning block 132, and one end, which is far away from the fourth positioning block 132, is fixedly connected with the fourth limiting block 136.

Referring to fig. 5, a third communication port 72 is formed at one end of the rear guide block 7, which is close to the fixing rod 1, and the size of the third communication port 72 is matched with that of the fixing rod 1, so that the fixing rod 1 can penetrate into the third communication port 72; a plurality of fourth clamping grooves 73 are formed in the inner wall of the third communication port 72 along the circumferential direction of the inner wall, the number of the fourth clamping grooves 73 is equal to that of the fourth limiting blocks 136, the size of the fourth clamping grooves 73 is matched with that of the fourth limiting blocks 136, and when the fourth limiting blocks 136 are aligned with the fourth clamping grooves 73, the fourth limiting blocks 136 can be clamped in the fourth clamping grooves 73.

When the fixed rod 1 is connected with the rear guide block 7, the fourth positioning block 132 is pressed towards the direction close to the bottom of the fourth positioning groove 137, the fourth positioning block 132 drives the fourth telescopic rod to be shortened, the fourth spring 133 is driven to be compressed, the fourth connecting rod 134 is driven to move towards the axis direction of the fixed rod 1, and the fourth limiting block 136 is driven to move towards the direction close to the bottom of the fourth limiting groove 138; when the top of the fourth limiting block 136 enters the fourth limiting groove 138, the fixing rod 1 is inserted into the rear guide block 7, and when the fourth limiting block 136 is aligned with the fourth clamping groove 73, the fourth positioning block 132 is released, so that the fourth limiting block 136 is clamped in the fourth clamping groove 73, and the fixing rod 1 and the rear guide block 7 are connected.

Referring to fig. 6, a plurality of fifth positioning grooves 417 are uniformly distributed on one side of the rear handle 4, which is close to the rear guide block 7, along the circumferential direction thereof, and the depth direction of the fifth positioning grooves 417 coincides with the radial direction of the rear handle 4; the fifth connecting assembly 41 includes a fifth driving telescopic rod 411, a fifth positioning block 412, a fifth spring 413, a fifth connecting rod 414, a fifth driven telescopic rod 415, and a fifth stopper 416.

Referring to fig. 6, the fifth active telescopic rod 411 is fixedly connected to the bottom of the fifth positioning slot 417, and the length direction thereof is the same as the depth direction of the fifth positioning slot 417, and the fifth positioning block 412 is fixedly connected to one end of the fifth active telescopic rod 411 away from the bottom of the fifth positioning slot 417; the fifth positioning block 412 is slidable in the fifth positioning groove 417 in the depth direction of the fifth positioning groove 417; the fifth spring 413 is fixedly sleeved on the fifth active telescopic rod 411, one end of the fifth spring 413 is fixedly connected with the fifth positioning block 412, and the other end of the fifth spring 413 is fixedly connected with the bottom surface of the fifth positioning groove 417.

Referring to fig. 6, a plurality of fifth limiting grooves 418 are formed in the rear handle 4 near one end of the rear guide block 7 along the circumferential direction thereof, and the fifth limiting grooves 418 and the fifth positioning grooves 417 are disposed opposite to each other in the horizontal direction.

Referring to fig. 6, the fifth driven telescopic rod 415 is fixedly connected with the bottom of the fifth limiting groove 418, and the length direction of the fifth driven telescopic rod 415 is the same as the depth direction of the fifth limiting groove 418, and the fifth limiting block 416 is fixedly connected with one end of the fifth driven telescopic rod 415 away from the bottom of the fifth limiting groove 418; the fifth limiting block 416 is capable of sliding in the fifth limiting groove 418 along the depth direction of the fifth limiting groove 418; a fifth communication groove 419 is arranged between the fifth limit groove 418 and the fifth positioning groove 417, the fifth connecting rod 414 is horizontally arranged and is arranged in the fifth communication groove 419 in a sliding manner along the radial direction of the rear handle 4, one end of the fifth connecting rod 414, which is close to the fifth positioning groove 417, is fixedly connected with the fifth positioning block 412, and one end, which is far away from the fifth positioning block 412, is fixedly connected with the fifth limiting block 416.

Referring to fig. 6, a fourth communication port 74 is formed at one end of the rear guide block 7, which is close to the rear handle 4, and the size of the fourth communication port 74 is matched with that of the rear handle 4, so that the rear handle 4 can penetrate into the fourth communication port 74; a plurality of fifth clamping grooves 75 are formed in the inner wall of the fourth communication port 74 along the circumferential direction of the inner wall, the number of the fifth clamping grooves 75 is equal to that of the fifth limiting blocks 416, the size of the fifth clamping grooves 75 is matched with that of the fifth limiting blocks 416, and when the fifth limiting blocks 416 are aligned with the fifth clamping grooves 75, the fifth limiting blocks 416 can be clamped in the fifth clamping grooves 75.

When the rear handle 4 is connected with the rear guide block 7, the fifth positioning block 412 is pressed towards the direction close to the bottom of the fifth positioning groove 417, the fifth positioning block 412 drives the fifth telescopic rod to be shortened, the fifth spring 413 is driven to be compressed, the fifth connecting rod 414 is driven to move towards the axis direction of the rear handle 4, and the fifth limiting block 416 is driven to move towards the direction close to the bottom of the fifth limiting groove 418; when the top of the fifth limiting block 416 enters the fifth limiting groove 418, the rear handle 4 is inserted into the rear guide block 7, and when the fifth limiting block 416 is aligned with the fifth clamping groove 75, the fifth positioning block 412 is released, so that the fifth limiting block 416 is clamped in the fifth clamping groove 75, and the rear handle 4 and the rear guide block 7 are connected.

Referring to fig. 4 and 5, the third connection assembly 12 includes a third telescopic link 121, a third stopper 122, and a third connection rod 123; the fixing rod 1 is provided with a plurality of groups of third limit grooves 125 along the length direction, each group of third limit grooves 125 comprises a plurality of third limit grooves 125 which are arranged along the circumferential direction of the fixing rod 1, the number of each group of third limit grooves 125 is equal to that of the second locating grooves 117, and each third limit groove 125 is opposite to the second limit groove 118 in the horizontal direction.

Referring to fig. 4 and 5, the third telescopic rod 121 is fixedly connected with the bottom of the third limiting groove 125, and the length direction of the third telescopic rod is the same as the depth direction of the third limiting groove 125, and the third limiting block 122 is fixedly connected with one end of the third telescopic rod 121 away from the bottom of the third limiting groove 125; the third limiting block 122 can slide in the third limiting groove 125 along the depth direction of the third limiting groove 125; a third communication groove 124 communicated with the second positioning groove 117 and the fourth positioning groove 137 is formed in the fixed rod 1, a third connecting rod 123 is horizontally arranged and is arranged in the third communication groove 124 in a sliding manner along the radial direction of the fixed rod 1, one end of the third connecting rod 123 is fixedly connected with the second positioning block 112, and the other end of the third connecting rod 123 is fixedly connected with the fourth positioning block 132; one side of each third limiting block 122, which is close to the third connecting rod 123, is fixedly sleeved on the third connecting rod 123.

Referring to fig. 4 and 5, the inner sides of the rough broach 22 and the fine broach 21 are provided with a plurality of third clamping grooves 23 along the inner circumference thereof, the number of the third clamping grooves 23 on each rough broach 22 or the fine broach 21 is equal to the number of the third limiting blocks 122, the size of the third clamping grooves 23 is matched with the size of the third limiting blocks 122, and when the third limiting blocks 122 are aligned with the third clamping grooves 23, the third limiting blocks 122 can be clamped in the third clamping grooves 23.

When the rough broach 22 or the fine broach 21 is fixed on the fixed rod 1, the second positioning block 112 or the fourth positioning block 132 is pressed to drive the third limiting block 122 to enter the third limiting groove 125, so that the rough broach 22 or the fine broach 21 can be sleeved on the fixed rod 1, then the third clamping groove 23 is aligned with the third limiting block 122, the pressed second positioning block 112 or the fourth positioning block 132 is released, and the third limiting block 122 can be clamped in the third clamping groove 23, so that the rough broach 22 or the fine broach 21 is installed.

The implementation principle of the second embodiment of the application is as follows: when the front neck 5 is connected with the front guide block 6, the first positioning block 512 is pressed towards the direction close to the bottom of the first positioning groove 517, the first positioning block 512 drives the first telescopic rod to be shortened, the first spring 513 is driven to be compressed, the first connecting rod 514 is driven to move towards the axis direction of the front neck 5, and the first limiting block 516 is driven to move towards the direction close to the bottom of the first limiting groove 518; when the top of the first limiting block 516 enters the first limiting groove 518, the front neck 5 is inserted into the front guide block 6, and when the first limiting block 516 is aligned with the first clamping groove 63, the first positioning block 512 is released, so that the first limiting block 516 is clamped in the first clamping groove 63, and the front neck 5 and the front guide block 6 are connected.

When the fixed rod 1 is connected with the front guide block 6, the second positioning block 112 is pressed towards the direction approaching to the bottom of the second positioning groove 117, the second positioning block 112 drives the second telescopic rod to be shortened, the second spring 113 is driven to be compressed, the second connecting rod 114 is driven to move towards the axis direction of the fixed rod 1, and the second limiting block 116 is driven to move towards the direction approaching to the bottom of the second limiting groove 118; when the top of the second limiting block 116 enters the second limiting groove 118, the fixing rod 1 is inserted into the front guide block 6, and when the second limiting block 116 is aligned to the second clamping groove 65, the second positioning block 112 is released, so that the second limiting block 116 is clamped in the second clamping groove 65, and the fixing rod 1 and the front guide block 6 are connected.

When the fixed rod 1 is connected with the rear guide block 7, the fourth positioning block 132 is pressed towards the direction close to the bottom of the fourth positioning groove 137, the fourth positioning block 132 drives the fourth telescopic rod to be shortened, the fourth spring 133 is driven to be compressed, the fourth connecting rod 134 is driven to move towards the axis direction of the fixed rod 1, and the fourth limiting block 136 is driven to move towards the direction close to the bottom of the fourth limiting groove 138; when the top of the fourth limiting block 136 enters the fourth limiting groove 138, the fixing rod 1 is inserted into the rear guide block 7, and when the fourth limiting block 136 is aligned with the fourth clamping groove 73, the fourth positioning block 132 is released, so that the fourth limiting block 136 is clamped in the fourth clamping groove 73, and the fixing rod 1 and the rear guide block 7 are connected.

When the rear handle 4 is connected with the rear guide block 7, the fifth positioning block 412 is pressed towards the direction close to the bottom of the fifth positioning groove 417, the fifth positioning block 412 drives the fifth telescopic rod to be shortened, the fifth spring 413 is driven to be compressed, the fifth connecting rod 414 is driven to move towards the axis direction of the rear handle 4, and the fifth limiting block 416 is driven to move towards the direction close to the bottom of the fifth limiting groove 418; when the top of the fifth limiting block 416 enters the fifth limiting groove 418, the rear handle 4 is inserted into the rear guide block 7, and when the fifth limiting block 416 is aligned with the fifth clamping groove 75, the fifth positioning block 412 is released, so that the fifth limiting block 416 is clamped in the fifth clamping groove 75, and the rear handle 4 and the rear guide block 7 are connected.

When the rough broach 22 or the fine broach 21 is fixed on the fixed rod 1, the second positioning block 112 or the fourth positioning block 132 is pressed to drive the third limiting block 122 to enter the third limiting groove 125, so that the rough broach 22 or the fine broach 21 can be sleeved on the fixed rod 1, then the third clamping groove 23 is aligned with the third limiting block 122, the pressed second positioning block 112 or the fourth positioning block 132 is released, and the third limiting block 122 can be clamped in the third clamping groove 23, so that the rough broach 22 or the fine broach 21 is installed.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (8)

1. The seven-key arc stator broach is characterized by comprising a fixed rod (1) and cutter teeth (2), wherein one end of the fixed rod (1) is provided with a front handle (3), a front neck (5) and a front guide block (6), and the other end of the fixed rod is provided with a rear handle (4) and a rear guide block (7);

the cutter teeth (2) comprise coarse broaches (22) and fine broaches (21), the coarse broaches (22) are gradually formed broaches, the coarse broaches (22) are at least three, and are uniformly sleeved on the fixing rod (1) along the length direction of the fixing rod (1), and the coarse broaches (22) are positioned on one side, close to the front guide block (6), between the front guide block (6) and the rear guide block (7); the finish broach (21) is a same-profile broach, the finish broach (21) is at least provided with two, and is also uniformly sleeved on the fixed rod (1) along the length direction of the fixed rod (1), and the finish broach (21) is positioned between the front guide block (6) and the rear guide block (7) and is close to one side of the rear guide block (7).

2. Seven-key circular arc stator broach according to claim 1, characterized in that the circumference of the rough broach (22) and the finish broach (21) are provided with seven evenly distributed tooth edges (8), and the tooth edges (8) are arranged obliquely towards the side close to the lead block (6).

3. Seven-key circular arc stator broach according to claim 2, characterized in that an arc-shaped groove (81) is arranged between two adjacent tooth edges (8) on the same fine broach (21) or coarse broach (22).

4. A seven-key circular arc stator broach according to claim 3, wherein the leader block (6) is circular arc-shaped at both ends in the longitudinal direction of the fixing rod (1).

5. A seven-key circular arc stator broach according to claim 1, wherein said front shank (3) is integrally provided with a front neck (5), said front neck (5) being detachably connected to said front guide block (6); the rear handle (4) is also detachably connected with the rear guide block (7); one end of the fixed rod (1) is detachably connected with the front guide block (6), and the other end of the fixed rod is detachably connected with the rear guide block (7); the cutter teeth (2) are detachably connected with the fixing rod (1).

6. The seven-key arc stator broach according to claim 5, wherein a first positioning groove (517), a first limiting groove (518) and a first connecting component (51) are provided in the front neck (5), and the first connecting component (51) comprises a first driving telescopic rod (511), a first driven telescopic rod (515) and a first connecting rod (514);

the first active telescopic rod (511) is sleeved with a first spring (513), the first active telescopic rod (511) and the first spring (513) are both arranged in the first positioning groove (517), one end of the first active telescopic rod (511) is fixedly connected with a first positioning block (512), and the first positioning block (512) is arranged in the first positioning groove (517) in a sliding manner along the radial direction of the front neck (5);

the first driven telescopic rod (515) is arranged in the first limiting groove (518), one end of the first driven telescopic rod (515) is fixedly connected with a first limiting block (516), and the first limiting block (516) is arranged in the first limiting groove (518) in a sliding manner along the radial direction of the front neck (5);

a first communication groove (519) is formed between the first positioning groove (517) and the first limiting groove (518), the first connecting rod (514) is arranged in the first communication groove (519) in a sliding manner along the radial direction of the front neck (5), one end of the first connecting rod (514) is fixedly connected with the first positioning block (512), and the other end of the first connecting rod is fixedly connected with the first limiting block (516);

a first clamping groove (63) is formed in the front guide block (6), and the first limiting block (516) can be clamped in the first clamping groove (63).

7. The seven-key arc stator broach according to claim 6, wherein a second positioning groove (117), a second limiting groove (118) and a second connecting component (11) are arranged in the fixed rod (1), and the second connecting component (11) comprises a second driving telescopic rod (111), a second driven telescopic rod (115) and a second connecting rod (114);

a second spring (113) is sleeved outside the second active telescopic rod (111), the second active telescopic rod (111) and the second spring (113) are both arranged in the second positioning groove (117), one end of the second active telescopic rod (111) is fixedly connected with a second positioning block (112), and the second positioning block (112) is arranged in the second positioning groove (117) in a sliding manner along the radial direction of the fixed rod (1);

the second driven telescopic rod (115) is arranged in the second limiting groove (118), one end of the second driven telescopic rod (115) is fixedly connected with a second limiting block (116), and the second limiting block (116) is arranged in the second limiting groove (118) in a sliding manner along the radial direction of the fixed rod (1);

a second communication groove (119) is formed between the second positioning groove (117) and the second limiting groove (118), the second connecting rod (114) is arranged in the second communication groove (119) in a sliding manner along the radial direction of the fixed rod (1), one end of the second connecting rod (114) is fixedly connected with the second positioning block (112), and the other end of the second connecting rod is fixedly connected with the second limiting block (116);

a second clamping groove (65) is formed in the front guide block (6), and the second limiting block (116) can be clamped in the second clamping groove (65).

8. The seven-key arc stator broach according to claim 7, wherein a plurality of third limiting grooves (125) are uniformly arranged in the fixed rod (1) along the circumferential direction of the fixed rod, and the number of the third limiting grooves (125) is equal to the sum of the number of the fine broach (21) and the number of the coarse broach (22);

a third limiting block (122) is arranged in the third limiting groove (125) along the radial sliding of the fixed rod (1), a third connecting groove and a third connecting rod (123) are arranged on one side, far away from the second connecting rod (114), of the second positioning block (112), the third connecting rod (123) is arranged in the third connecting groove along the radial sliding of the fixed rod (1), one end of the third connecting rod is fixedly connected with the second positioning block (112), and each third limiting block (122) is fixedly connected with the third connecting rod (123);

and the rough broach (22) and the fine broach (21) are internally provided with third clamping grooves (23), and the third limiting block (122) can be clamped in the third clamping grooves (23).

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