CN114833722B

CN114833722B - Clamp for machining blank of submersible pump shell

Info

Publication number: CN114833722B
Application number: CN202210490983.6A
Authority: CN
Inventors: 吴广铭; 伍燚科; 黄强; 卢听听; 罗骏峰
Original assignee: Cixi Huili Machinery & Electric Co ltd
Current assignee: Cixi Huili Machinery & Electric Co ltd
Priority date: 2022-05-07
Filing date: 2022-05-07
Publication date: 2023-06-13
Anticipated expiration: 2042-05-07
Also published as: CN114833722A

Abstract

The application relates to a clamp for processing of immersible pump casing blank relates to the anchor clamps field, and it includes: the chuck disc body is provided with a sliding groove which is arranged along the radial direction of the chuck disc body; the bidirectional screw rod is rotationally connected in the chute, is fixed relative to the chuck disc body along the axial direction of the bidirectional screw rod, and is provided with two sections of transmission thread parts which are oppositely arranged in the rotation direction; the sliding blocks are connected in the sliding groove in a sliding way along the axial direction of the bidirectional screw rod, and the two sliding blocks are respectively in threaded connection with two transmission threaded parts of the bidirectional screw rod; the support plate is arranged on the sliding block and slides along the axial direction of the bidirectional screw rod along with the sliding block; and the clamping jaws are arranged on the supporting plate, the two clamping jaws are oppositely arranged, the supporting plate provides a supporting area for the clamping jaws, the supporting area is positioned in the middle of the clamping jaws, the clamping jaws are provided with two groups of clamping points which are arranged at intervals along the axial direction of the chuck body, the supporting area is positioned between the two groups of clamping points, each group of clamping points comprises two clamping points, and each group of clamping points can swing relative to the supporting area. The blank clamping device has the effect of reliably clamping the blank.

Description

Clamp for machining blank of submersible pump shell

Technical Field

The application relates to the field of clamps, in particular to a clamp for machining a blank of a submersible pump shell.

Background

The chuck is a mechanical device on a machine tool for clamping a workpiece. The workpiece is clamped and positioned by the radial movement of the movable claws uniformly distributed on the chuck body. The chuck is generally composed of a chuck body, movable jaws and a jaw drive mechanism 3.

In the related art, a few revolving body blanks, such as a submersible pump body blank, are frequently arranged in a cylindrical shape, and in the production of a submersible pump body, the submersible pump body blank is produced in a casting mode, and then the submersible pump body blank is ground to remove redundant parts. Chuck clamping is generally used when processing the cylindrical shell, and because the outer peripheral surface of the submersible pump body blank is uneven, the reliable contact between all clamping jaws and the submersible pump body blank is difficult to ensure when the clamping jaws are clamped, so that the submersible pump body blank easily jumps during turning, and the processing precision of the submersible pump body blank is lower.

In view of the above-mentioned related art, the inventors have considered that there is a need to design a jig that allows all the clamping jaws to reliably contact the outer peripheral surface of the pump body blank of the submersible pump.

Disclosure of Invention

In order to enable the blank to be difficult to jump during processing, the application provides a clamp for processing the blank of the submersible pump shell.

The application provides a clamp for processing immersible pump casing blank adopts following technical scheme:

a clamp for machining a submersible pump housing blank, comprising:

the chuck disc body is provided with a sliding groove which is arranged along the radial direction of the chuck disc body;

the bidirectional screw rod is rotationally connected in the chute and is fixed relative to the chuck disc body along the axial direction of the bidirectional screw rod, and the bidirectional screw rod is provided with two sections of transmission thread parts which are oppositely arranged in the rotation direction;

the two sliding blocks are connected in the sliding groove in a sliding way along the axial direction of the bidirectional screw rod, and are respectively in threaded connection with two transmission threaded parts of the bidirectional screw rod;

the support plates are arranged on the sliding blocks in a one-to-one correspondence manner, extend along the axial direction of the chuck disc body towards the direction away from the chuck disc body, and slide along the axial direction of the bidirectional screw rod along with the sliding blocks; and

clamping jaw, two the clamping jaw is relative setting, two the clamping jaw is followed with two along with the slider the axial slip of two-way lead screw is in order to centre gripping on the blank, the backup pad is for the clamping jaw provides the support area, the support area is located the middle part of clamping jaw, the clamping jaw has the edge the axial of chuck disk body is two sets of clamping points that the interval set up, the support area is located between two sets of clamping points, every group the clamping point includes two clamping points, and two of same group the clamping point is followed the circumference of chuck disk body is the interval setting, every group the clamping point can be relative the support area swing.

Through adopting above-mentioned technical scheme, rotate two-way lead screw and order about two clamping jaws and be close to each other, when two clamping jaws press from both sides tight blank, every clamping point of group can be relative support region to the direction deformation that is close to the backup pad to make all clamping points and blank reliable contact, and then be difficult for taking place to beat when making blank abrasive machining.

Optionally, a support pad is arranged in the middle of the clamping jaw, and the support pad is located between the support plate and the clamping jaw.

Through adopting above-mentioned technical scheme, the backup pad provides the support for the clamping jaw through supporting the backing plate for form deformation clearance between every clamping point of group and the backup pad, when making two clamping jaws press from both sides tight blank, every clamping point of group can support the regional deformation to the direction that is close to the backup pad relatively, makes all clamping points and the reliable contact of blank.

Optionally, the distances from the support pad to the two groups of clamping points are equal.

Through adopting above-mentioned technical scheme for the clamping force equals when two sets of clamping points press from both sides tight blank, and then is difficult for taking place to beat when making blank abrasive machining.

Optionally, the clamping jaw further comprises a pressing structure arranged on one side, away from the clamping jaw, of the supporting plate.

Through adopting above-mentioned technical scheme, after all grip points and the reliable contact of blank, provide the support through the clamping jaw that compresses tightly the structure for after the deformation for the clamping jaw is difficult for continuing to take place deformation, and then is difficult for taking place to beat when making blank abrasive machining.

Optionally, the compaction structure includes support piece and screw thread and compresses tightly the piece, the support piece is located the backup pad is kept away from one side of clamping jaw, the support piece has an internal thread hole, be equipped with in the backup pad and supply screw thread compresses tightly the piece and wears to establish and run through and establish the hole, screw thread compresses tightly the piece and wears to establish in proper order the internal thread hole with wear to establish the hole, screw thread compress tightly the piece with internal thread hole threaded connection, screw thread compresses tightly the piece can compress tightly the clamping jaw.

Through adopting above-mentioned technical scheme, after all grip points and the reliable contact of blank, rotate the screw thread and compress tightly the piece and make the tip of screw thread compress tightly the piece compress tightly the clamping jaw and provide the support for the clamping jaw is difficult for continuing to take place deformation to the direction that is close to the backup pad, and then is difficult for taking place to beat when making blank abrasive machining.

Optionally, the clamping jaw includes base plate and clamp splice, the base plate is located the backup pad orientation one side of chuck disk body axis, the support area is located the middle part of base plate, the clamp splice is two sets of, two sets of the clamp splice is followed the axial of chuck disk body is the interval setting, every group the clamp splice includes two clamp splice, the clamping point one-to-one is located on the clamp splice.

Optionally, the clamping jaw is close to one side of backup pad is equipped with the swing post, the axis of swing post with chuck disk body's axis mutually perpendicular, the swing post is located two sets of between the grip point, be equipped with the swing groove in the backup pad, the swing post part insert in the swing groove and can in follow in the swing groove the circumference of swing post swings, the swing post inserts in the swing groove, the backup pad with leave the deformation clearance between the clamping jaw.

Through adopting above-mentioned technical scheme, the backup pad provides the support for the clamping jaw through swing post and swinging groove for form deformation clearance between every group clamping point and the backup pad, when making two clamping jaws press from both sides tight blank, every group clamping point can support the regional deformation to the direction that is close to the backup pad relatively, makes all clamping points and the reliable contact of blank.

Optionally, the two groups of clamping points are symmetrical with respect to the swing post.

Optionally, chuck disk body dorsad one side of clamping jaw is equipped with the connection pad, the connection pad is used for connecting the main shaft, the connection pad is followed chuck disk body circumference with chuck disk body rotates to be connected, the connection pad orientation one side of chuck disk body is equipped with drive bevel gear, drive bevel gear with the connection pad is concentric setting, drive bevel gear follows the connection pad rotates, the cover is equipped with driven bevel gear on the bidirectional screw, the bidirectional screw with driven bevel gear is concentric setting, the bidirectional screw can follow driven bevel gear rotates, drive bevel gear with driven bevel gear intermeshing.

Through adopting above-mentioned technical scheme, when the main shaft drives the connection pad and rotates, the connection pad drives two-way lead screw rotation through driving bevel gear and driven bevel gear's intermeshing earlier, and two clamping jaws are close to each other when clamping in the blank to two-way lead screw drive, need not the manual work and rotate two-way lead screw drive two clamping jaw clamping blanks, and the automation of blank clamping has been assisted to have realized.

Optionally, be equipped with the rotation ring on the periphery wall of connection pad with one heart, chuck disk body orientation one side of connection pad is equipped with the go-between with one heart, the go-between is relative chuck disk body is fixed, the rotation ring rotate connect in the go-between, the one end that the chuck disk body was kept away from to the go-between is fixed with the spacing ring, the spacing ring butt in the one end that the chuck disk body was kept away from to the rotation ring.

Through adopting above-mentioned technical scheme, rotate the connection pad and connect on the chuck disk body.

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

1. when the two clamping jaws clamp the blank, each group of clamping points can deform towards the direction close to the supporting plate relative to the supporting area, so that all the clamping points are reliably contacted with the blank, and the blank is difficult to jump during grinding;

2. after all clamping points are reliably contacted with the blank, the threaded compression piece is rotated, so that the end part of the threaded compression piece compresses the clamping jaw to provide support for the clamping jaw, the clamping jaw is not easy to deform continuously in a direction close to the supporting plate, and the blank is not easy to jump during grinding.

Drawings

Fig. 1 is a schematic structural view of a fixture for processing a blank of a submersible pump housing according to embodiment 1 of the present application.

Fig. 2 is an exploded view of the chuck body, the slider, and the support plate of embodiment 1 of the present application.

Fig. 3 is an exploded view of the chuck disc of example 1 of the present application with a bi-directional screw, thrust ball bearing, and clamp ring.

Fig. 4 is an exploded view of the clamping jaw and the supporting pad, supporting plate, and compacting structure of embodiment 1 of the present application.

Fig. 5 is an exploded view of the chuck body, the connecting disc and the connecting ring according to embodiment 1 of the present application.

Fig. 6 is an exploded view of the clamping jaw and the supporting plate, reinforcing plate, and pressing structure of embodiment 2 of the present application.

Reference numerals illustrate: 10. a chuck body; 11. a chute; 12. a connecting ring; 121. a limiting ring; 13. a guide bar; 14. a rotating seat; 141. a through hole; 142. a bearing groove; 20. a two-way screw rod; 21. a drive screw; 22. a driven bevel gear; 23. an optical axis; 231. clamping the threaded part; 24. a baffle disc; 25. a thrust ball bearing; 26. a clamping sleeve; 27. a convex column; 30. a slide block; 31. a guide groove; 40. a support plate; 41. a support region; 42. penetrating holes; 43. a swinging groove; 44. a fixing plate; 45. a reinforcing plate; 50. a clamping jaw; 51. a substrate; 511. a support backing plate; 512. a swing column; 52. clamping blocks; 53. a clamping point; 60. a compacting structure; 61. a support; 611. an internal threaded hole; 62. a screw thread pressing member; 70. a connecting disc; 71. a drive bevel gear; 72. a rotating ring; 80. and (5) blank.

Detailed Description

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

The embodiment of the application discloses a clamp for processing a blank 80 of a submersible pump shell.

Example 1

Referring to fig. 1, the jig for processing a submersible pump housing blank includes a chuck plate body 10, a bidirectional screw 20, a slider 30, a support plate 40, and a jaw 50. The bidirectional screw rod 20 is rotationally connected to the chuck disc body 10, the bidirectional screw rod 20 is fixed relative to the chuck disc body 10 along the axial direction of the bidirectional screw rod 20, the sliding blocks 30 are slidingly connected to the chuck disc body 10 along the radial direction of the chuck disc body 10, the bidirectional screw rod 20 is provided with two sections of transmission thread parts 21 which are oppositely arranged in the rotating direction, the transmission thread parts 21 are external threads, the two transmission thread parts 21 of the bidirectional screw rod 20 are respectively penetrated on the two sliding blocks 30 and the two sliding blocks 30 are in threaded connection, the supporting plates 40 are fixed on the sliding blocks 30 in a one-to-one correspondence manner, and the clamping jaws 50 are fixed on the supporting plates 40 in a one-to-one correspondence manner. The two-way screw 20 is rotated to drive the two clamping jaws 50 to approach each other and clamp the blank 80.

Referring to fig. 2 and 3, the chuck body 10 is provided in a disc shape, the chuck body 10 has a chute 11, the chute 11 is provided along a radial direction of the chuck body 10 and is opened toward one end of the chuck body 10, and both ends of the chute 11 penetrate through an outer peripheral wall of the chuck body 10. The sliding block 30 is arranged in the sliding groove 11 and is in abutting sliding with two opposite side walls of the sliding groove 11, guide strips 13 are uniformly arranged on the two opposite side walls of the sliding groove 11, guide grooves 31 are formed in the two opposite side walls of the sliding block 30, and the guide strips 13 are arranged in the guide grooves 31 and can slide in the guide grooves 31 so as to guide the sliding block 30 to slide along the radial direction of the chuck disc body 10.

The bidirectional screw rod 20 is arranged in the chute 11 in a penetrating manner along the length direction of the chute 11, the axis of the bidirectional screw rod 20 is intersected with the axis of the chuck disc body 10, and the bidirectional screw rod 20 further comprises an optical axis 23, a clamping thread part 231 and a blocking disc 24. The optical axis 23 is located between the two drive screw portions 21, and the outer diameter of the optical axis 23 is larger than the outer diameter of the drive screw portion 21. The clamping screw 231 and the baffle disc 24 are respectively located at two ends of the optical axis 23, the clamping screw 231 is an external screw, the large diameter of the clamping screw 231 is larger than that of the transmission screw 21, the large diameter of the clamping screw 231 is not larger than that of the optical axis 23, and the diameter of the baffle disc 24 is larger than that of the optical axis 23.

The bottom of the chute 11 is fixed with a rotating seat 14 by a screw, the rotating seat 14 is positioned in the middle of the chute 11, the rotating seat 14 is provided with a through hole 141, and the axis of the through hole 141 is parallel to the length direction of the chute 11. Bearing grooves 142 are formed in both ends of the rotating seat 14, the bearing grooves 142 and the through holes 141 are concentrically arranged, and thrust ball bearings 25 are mounted in both bearing grooves 142. When the bidirectional screw rod 20 is mounted on the rotating seat 14, the optical axis 23 penetrates through the through hole 141 and is rotationally connected with the rotating seat 14, the baffle disc 24 is abutted against one of the thrust ball bearings 25, the clamping threaded portion 231 is in threaded connection with the clamping sleeve 26, and the clamping sleeve 26 is abutted against the other thrust ball bearing 25, so that the bidirectional screw rod 20 is rotationally connected to the rotating seat 14. When the bidirectional screw 20 is rotated, the bidirectional screw 20 drives the two sliders 30 to approach or separate from each other.

The support plates 40 are made of elastic steel, the number of the support plates 40 is two, the two support plates 40 are fixed on one side of the sliding block 30, which is opposite to the chuck disk body 10, one side of the support plate 40, which is close to the sliding block 30, is also integrally provided with a fixing plate 44, the fixing plate 44 is mutually perpendicular to the support plates 40, and the fixing plate 44 is fixed on the sliding block 30 through screws.

In order to reinforce the support plate 40, the reinforcing plates 45 are fixed on both sides of the support plate 40 by screws, and the reinforcing plates 45 are fixedly connected with the support plate 40 and the fixing plate 44 respectively, so that the connection part of the support plate 40 and the reinforcing plates 45 is not easy to deform.

Referring to fig. 2 and 4, the clamping jaws 50 are fixed on the supporting plate 40 in a one-to-one correspondence, and the two clamping jaws 50 are disposed opposite to each other. Specifically, the clamping jaw 50 includes a base plate 51 and a clamping block 52. The base plate 51 is fixed to a side of the support plate 40 facing the axis of the chuck body 10 by screws. Each clamping jaw 50 comprises two groups of clamping blocks 52, each group of clamping blocks 52 consists of two clamping blocks 52, the two groups of clamping blocks 52 are arranged at intervals along the axial direction of the chuck disc body 10, each clamping block 52 is provided with a clamping point 53, the distances from the clamping points 53 of the two clamping blocks 52 of the same group to the axial direction of the chuck disc body 10 are equal, the clamping points 53 of the two clamping blocks 52 of the same group are arranged at intervals along the circumferential direction of the chuck disc body 10, and the distances from the clamping points 53 of the four clamping blocks 52 to the substrate 51 are equal.

The middle part of base plate 51 is equipped with supporting plate 511, supporting plate 511 is located between backup pad 40 and the base plate 51, backup pad 40 provides the support for base plate 51 through supporting plate 511 and forms supporting region 41 on base plate 51, supporting region 41 equals to the distance of two sets of clamping points 53, leave the clearance between supporting plate 511 and the backup pad 40 simultaneously for when clamp splice 52 centre gripping blank 80, base plate 51 can take place deformation to the direction that is close to backup pad 40, and then drives the relative supporting region 41 swing of every clamping point 53 of group, in order to guarantee that the clamping point 53 of all clamp splices 52 reliably presss from both sides tight blank 80.

The support plate 40 is further provided with a pressing structure 60, the pressing structure 60 is located between the support area 41 and the chuck disc body 10, the axis of the pressing structure 60 is coplanar with the axis of the chuck disc body 10, and the pressing structure 60 comprises a support piece 61 and a threaded pressing piece 62. The support member 61 is fixed on a side of the support plate 40 away from the base plate 51, the support member 61 has a through internal threaded hole 611, the support plate 40 is provided with a through hole 42 concentrically arranged with the internal threaded hole 611, and the through hole 42 penetrates the support plate 40. The threaded pressing member 62 is a screw, and the stud of the threaded pressing member 62 sequentially penetrates through the internal threaded hole 611 and the penetrating hole 42, and the stud of the threaded pressing member 62 is in threaded connection with the internal threaded hole 611 of the supporting member 61. After the clamping points 53 of the clamping blocks 52 are reliably clamped on the peripheral wall of the blank 80, the threaded pressing member 62 is rotated so that the end portions of the threaded pressing member 62 extend out of the penetrating holes 42 to reliably abut against the base plate 51, so that support is provided for the base plate 51, and jumping is unlikely to occur during grinding of the blank 80.

Referring to fig. 2 and 5, a connecting disc 70 is provided on a side of the chuck plate body 10 facing away from the clamping jaw 50, the connecting disc 70 is used for connecting with a spindle of a machine tool, the connecting disc 70 is concentrically arranged with the chuck plate body 10, and the connecting disc 70 is abutted against an end surface of the chuck plate body 10 facing away from the clamping jaw 50. A rotating ring 72 is fixed on the peripheral wall of the connecting disc 70, a connecting ring 12 is fixed on one end of the chuck disc body 10 close to the connecting disc 70 through screws, the connecting ring 12 and the chuck disc body 10 are concentrically arranged, and the rotating ring 72 is arranged in the connecting ring 12 and is in rotating connection with the connecting ring 12. The end of the connecting ring 12 far away from the chuck disk body 10 is fixed with a limiting ring 121, the limiting ring 121 and the connecting ring 12 are concentrically arranged, and the limiting ring 121 is abutted against the end of the rotating ring 72 far away from the chuck disk body 10 so that the rotating ring 72 rotates in the connecting ring 12.

One end of the connecting disc 70, which is close to the chuck disc body 10, is fixed with a driving bevel gear 71, the driving bevel gear 71 and the connecting disc 70 are concentrically arranged, a driven bevel gear 22 is sleeved on the bidirectional screw rod 20, the driven bevel gear 22 and the bidirectional screw rod 20 synchronously rotate, the driven bevel gear 22 is fixed relative to the bidirectional screw rod 20 along the axial direction, and the driven bevel gear 22 and the driving bevel gear 71 are meshed with each other.

The blank 80 is clamped between the two clamping jaws 50 by the mechanical arm, the main shaft rotates, the driving bevel gear 71 and the driven bevel gear 22 are meshed with each other to drive the two opposite clamping jaws 50 to be close to each other to clamp the blank 80, after the two opposite clamping jaws 50 clamp the blank 80, the driven bevel gear 22 is locked, the driving bevel gear 71 and the driven bevel gear 22 stop rotating, the connecting disc 70 drives the chuck disc body 10 to rotate, and automation of clamping of the blank 80 is assisted.

The implementation principle of the embodiment 1 is as follows: the support plate 40 provides support to the base plate 51 through the support pad 511 to form the support area 41, so that when the two opposite clamping jaws 50 clamp the blank 80, each group of clamping points 53 can swing relative to the support area 41 and deform towards the direction close to the support plate 40, so that all the clamping points 53 reliably contact the blank 80, and after the clamping points reliably contact, the base plate 51 is pressed by the pressing structure 60 to provide support for the base plate 51, so that the blank 80 is not easy to jump during processing.

Example 2

Referring to fig. 5, this embodiment is different from embodiment 1 in that the support plate 40 provides support for the holding jaw 50 through the swing post 512 and the swing groove 43. Specifically, a swing column 512 is fixed on one side of the substrate 51 near the support plate 40, the axis of the swing column 512 is perpendicular to the axis of the chuck disk 10, and the distances from the swing column 512 to the two groups of clamping points 53 are equal. The support plate 40 is provided with a swinging groove 43 on one side close to the base plate 51, two ends of the swinging groove 43 penetrate through two opposite side walls of the support plate 40, the swinging column 512 can be slidably inserted into the swinging groove 43 from one end of the swinging groove 43, and the swinging column 512 rotates around the periphery of the swinging column 512 relative to the support plate 40. When the swing column 512 is inserted into the swing groove 43, the base plate 51 and the support plate 40 have a deformation gap, and the two reinforcing plates 45 are respectively covered on both ends of the swing groove 43 to limit the swing column 512.

The present embodiment also differs from embodiment 1 in that the number of pressing structures 60 is two, and the two pressing structures 60 are symmetrical with respect to the swing post 512.

The implementation principle of the embodiment 2 is as follows: the support plate 40 provides support for the base plate 51 through the swing column 512 and the swing groove 43, so that when the blank 80 is clamped by the two opposite clamping jaws 50, each group of clamping points 53 can swing around the axis of the swing column 512 and deform towards the direction close to the support plate 40, all the clamping points 53 are reliably contacted with the blank 80, and after the clamping points are reliably contacted, the base plate 51 is pressed by the pressing structure 60 to provide support for the base plate 51, so that the blank 80 is not easy to jump during processing.

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

1. Clamp for processing blank of submersible pump shell, which is characterized by comprising:

the chuck disc body (10) is provided with a sliding groove (11) which is arranged along the radial direction of the chuck disc body (10); the bidirectional screw rod (20) is rotationally connected in the sliding groove (11), the bidirectional screw rod (20) is fixed relative to the chuck disc body (10) along the axial direction of the bidirectional screw rod, and the bidirectional screw rod (20) is provided with two sections of transmission thread parts (21) which are oppositely arranged in the rotation direction; the two sliding blocks (30) are in sliding connection in the sliding groove (11) along the axial direction of the bidirectional screw rod (20), and the two sliding blocks (30) are respectively in threaded connection with two transmission threaded parts (21) of the bidirectional screw rod (20); the support plates (40) are arranged on the sliding blocks (30) in a one-to-one correspondence manner, the support plates (40) extend along the axial direction of the chuck disc body (10) towards the direction away from the chuck disc body (10), the support plates (40) slide along the axial direction of the bidirectional screw rod (20) along with the sliding blocks (30), and the support plates (40) are elastic steel; the clamping jaws (50) are arranged on the supporting plate (40) in a one-to-one correspondence manner, the two clamping jaws (50) are oppositely arranged, the two clamping jaws (50) slide along the axial direction of the bidirectional screw rod (20) along with the two sliding blocks (30) to clamp a blank, the supporting plate (40) provides a supporting area (41) for the clamping jaws (50), the supporting area (41) is positioned in the middle of the clamping jaws (50), the clamping jaws (50) are provided with two groups of clamping points (53) which are arranged at intervals along the axial direction of the chuck disc body (10), the supporting area (41) is positioned between the two groups of clamping points (53), each group of clamping points (53) comprises two clamping points (53), the two clamping points (53) of the same group are arranged at intervals along the circumferential direction of the chuck disc body (10), and each group of clamping points (53) can swing relative to the supporting area (41); a supporting base plate (511) is arranged in the middle of the clamping jaw (50), and the supporting base plate (511) is positioned between the supporting plate (40) and the clamping jaw (50); clamping jaw (50) are including base plate (51) and clamp splice (52), base plate (51) are located backup pad (40) orientation one side of chuck disk body (10) axis, support area (41) are located the middle part of base plate (51), clamp splice (52) are two sets of, two sets of clamp splice (52) are followed chuck disk body (10) axial is the interval setting, every group clamp splice (52) include two clamp splice (52), clamping point (53) one-to-one are located on clamp splice (52).

2. The fixture for machining a blank of a submersible pump housing of claim 1, wherein: the distance from the support base plate (511) to the two groups of clamping points (53) is equal.

3. The fixture for machining a blank of a submersible pump housing of claim 1, wherein: the clamping jaw comprises a clamping jaw body (50) and a clamping structure (60) arranged on one side of the supporting plate (40) away from the clamping jaw body.

4. A submersible pump housing blank machining fixture as claimed in claim 3, wherein: the compressing structure (60) comprises a supporting piece (61) and a threaded compressing piece (62), wherein the supporting piece (61) is arranged on one side, away from the clamping jaw (50), of the supporting plate (40), the supporting piece (61) is provided with an internal threaded hole (611), a penetrating hole (42) for the threaded compressing piece (62) to penetrate through is formed in the supporting plate (40), the threaded compressing piece (62) penetrates through the internal threaded hole (611) and the penetrating hole (42) in sequence, the threaded compressing piece (62) is in threaded connection with the internal threaded hole (611), and the threaded compressing piece (62) can compress the clamping jaw (50).

5. The fixture for machining a blank of a submersible pump housing of claim 1, wherein: the chuck is characterized in that a connecting disc (70) is arranged on one side of the chuck disc body (10) back to the clamping jaw (50), the connecting disc (70) is used for being connected with a main shaft, the connecting disc (70) is connected with the chuck disc body (10) in a rotating mode along the circumferential direction of the chuck disc body (10), a driving bevel gear (71) is arranged on one side of the chuck disc body (10) towards the connecting disc (70), the driving bevel gear (71) and the connecting disc (70) are concentrically arranged, the driving bevel gear (71) rotates along with the connecting disc (70), a driven bevel gear (22) is sleeved on the bidirectional screw rod (20), the bidirectional screw rod (20) and the driven bevel gear (22) are concentrically arranged, the bidirectional screw rod (20) can rotate along with the driven bevel gear (22), and the driving bevel gear (71) and the driven bevel gear (22) are mutually meshed.

6. The fixture for processing a blank of a submersible pump housing according to claim 5, wherein: the chuck is characterized in that a rotating ring (72) is concentrically arranged on the peripheral wall of the connecting disc (70), a connecting ring (12) is concentrically arranged on one side of the chuck disc body (10) towards the connecting disc (70), the connecting ring (12) is fixed relative to the chuck disc body (10), the rotating ring (72) is rotationally connected in the connecting ring (12), a limiting ring (121) is fixed at one end, far away from the chuck disc body (10), of the connecting ring (12), and the limiting ring (121) is abutted to one end, far away from the chuck disc body (10), of the rotating ring (72).