Right angle nozzle turning chuck and fixture system

Abstract

The application discloses a right-angle pipe nozzle turning chuck, which comprises a tail handle, a clamping body, a positioning rod, a positioning sleeve, a pull rod, a first chuck and a second chuck. The clamping body is provided with a first through hole in the length direction, and two installation grooves are arranged on the side wall of the clamping body in the length direction. The first chuck and the second chuck are arranged in the first through hole, the pull rod penetrates through the first chuck and the second chuck in the length direction, one end of the pull rod abuts against the end of the first chuck, and the other end of the pull rod is fixed to the end of the second chuck through a detachable first fastener. The first chuck is provided with a first clamping part, and the second chuck is provided with a second clamping part. One end of the positioning rod is detachably fixedly connected with the clamping body, and the other end of the positioning rod is sleeved in a threaded hole of the positioning sleeve. The right-angle pipe nozzle turning chuck realizes floating centering and clamping of the right-angle pipe nozzle, realizes machining of right-angle pipe nozzles with different sizes by adjusting the positioning size or replacing positioning pieces with different specifications, has high universality and low production cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanical processing, in particular to a right-angle nozzle turning chuck and fixing system. BACKGROUND

[0002] In the prior art, metal nozzle parts are usually positioned and clamped by special fixtures, which have no universality, resulting in high production cost and fixture manufacturing cost.

[0003] Chinese utility model patent authorization announcement No. CN216065596U discloses a new type of elbow clamp, which can reduce the clamping frequency of traditional tooling, shorten the product debugging cycle, and effectively improve the work efficiency; including: chuck, the chuck is installed on the rotating mechanism of the lathe, two groups of synchronous clamping jaws are slidably installed on the chuck, the movement extension lines of the two groups of synchronous clamping jaws are located on the same straight line, and the two groups of synchronous clamping jaws are symmetric about the plane where the axis of the chuck is located, and the two groups of synchronous clamping jaws always keep synchronous relative movement; first clamping part and second clamping part, the first clamping part is fixedly installed on the inner side end face of one group of synchronous clamping jaws, the second clamping part is fixedly installed on the inner side end face of the other group of synchronous clamping jaws corresponding to the first clamping part, the first clamping part and the second clamping part are provided with a first cavity on the opposite end faces, and the second clamping part is provided with a second cavity corresponding to the first cavity on the opposite end face of the first clamping part. When the diameter of the elbow pipe changes, the elbow clamp of the utility model needs to replace the first clamping part and the second clamping part at the same time, thereby increasing the manufacturing cost of the clamp. SUMMARY

[0004] To solve the above problems, the present application aims to provide a right-angle nozzle turning chuck and fixing system, which can satisfy the positioning and clamping of right-angle nozzles during turning processing, and realize the processing of right-angle nozzles of different sizes by adjusting the positioning size or replacing different specifications of positioning parts, which has strong universality and low production cost.

[0005] In order to achieve the above purpose, the technical solution adopted by the present application is:

[0006] The application discloses a right-angle nozzle turning chuck, which is characterized by comprising a tail handle, a clamping body, a positioning rod, a positioning sleeve, a pull rod, a first chuck and a second chuck, wherein the tail handle is fixedly connected with the clamping body; the clamping body is provided with a first through hole in the length direction, two installation grooves are arranged on the side wall of the clamping body in the length direction, the two installation grooves are connected through a crosspiece, and the two installation grooves are communicated with the first through hole; the first chuck and the second chuck are arranged in the first through hole, the pull rod penetrates through the first chuck and the second chuck in the length direction, one end of the pull rod abuts against the end of the first chuck, and the other end of the pull rod is fixed with the end of the second chuck through a detachable first fastener; the first chuck is provided with a first clamping part, the second chuck is provided with a second clamping part, the first clamping part and the second clamping part penetrate through the two installation grooves and extend outward respectively, and are arranged on the two sides of the crosspiece respectively, and the first clamping part and the second clamping part form a clamping space of the right-angle nozzle; one end of the positioning rod is detachably fixedly connected with the clamping body, and the other end of the positioning rod is sleeved in a threaded hole of the positioning sleeve, and the positioning sleeve is arranged above the clamping space formed by the first clamping part and the second clamping part.

[0007] The tail handle is used for being connected with a machine tool, so that the chuck can be stably fixed on the machine tool. The first chuck and the second chuck slide along the first through hole axis, the first clamping part and the second clamping part are gap-fitted with the installation grooves, the first chuck and the second chuck are forced to only make linear sliding, and the first chuck and the second chuck cannot slide out of the first through hole through the arrangement of the crosspiece. The first fastener can adopt a nut, an external thread is arranged on the end of the positioning rod, the first fastener is connected with the positioning rod through the thread, and the second chuck is fixed. When the right-angle nozzle turning chuck is used, a threaded hole of a to-be-processed right-angle nozzle part is connected with a threaded hole of the positioning sleeve, the to-be-processed end is directed to the side opposite to the tail handle, the positioning rod is axially adjusted, the to-be-processed right-angle nozzle part is located between the first clamping part and the second clamping part, and the to-be-processed end is located on the machining rotation axis. The first fastener is tightened, the first chuck and the second chuck slide towards the to-be-processed right-angle nozzle part, and the to-be-processed right-angle nozzle part is clamped through the first clamping part and the second clamping part. The right-angle nozzle turning chuck can realize turning machining of right-angle nozzle parts of different sizes through axial adjustment of the positioning rod and replacement of the positioning sleeves of different thread specifications. The right-angle nozzle turning chuck has the advantages of simple structure, strong universality, low manufacturing cost and easy popularization.

[0008] Preferably, the first clamping part and the second clamping part are symmetrical about the central axis of the threaded hole, and the minimum distance between the first clamping part and the second clamping part is less than or equal to the outer diameter of the right-angle nozzle.

[0009] Specifically, one end of the tail handle is a taper handle or a straight handle, and the other end is provided with a first mounting column; the side wall of the clamp is provided with a first mounting hole matched with the first mounting column, and the first mounting hole is fixedly connected with the first mounting column. The taper handle is connected with the main shaft of the lathe, and the straight handle is connected with the chuck of the lathe. The first mounting column and the first mounting hole can be connected by interference fit, and the contact surfaces are further connected by welding.

[0010] Preferably, further comprising a bushing; the top of the clamp is provided with a first mounting part, and the end of the first mounting part is arranged above the clamping space formed by the first clamping part and the second clamping part; the end of the first mounting part is provided with a second mounting hole, and the second mounting hole penetrates the first mounting part; one end of the bushing is clamped with the first mounting part, and the other end is provided with a second mounting column matched with the second mounting hole; the bushing is provided with a third mounting hole, the positioning rod is connected with the third mounting hole through the first threaded end, and is fixed by a second fastener. The second mounting column and the second mounting hole are connected by interference fit, so that the bushing is fixed on the first mounting part, the positioning rod adjusts the axial position by thread, and the second fastener can fix the end of the positioning rod by a nut.

[0011] Preferably, further comprising a third fastener, the side wall of the bushing is provided with a tapered groove, the first mounting part is provided with a fourth mounting hole, and the third fastener penetrates the fourth mounting hole and is connected with the tapered groove. The third fastener can be a taper head screw, the taper head screw is arranged in the fourth mounting hole of the first mounting part, the conical head of the taper head screw is tightly arranged in the tapered groove of the bushing, and the bushing is further fastened.

[0012] Specifically, one end of the positioning rod is provided with an adjusting hole inward, and the other end is provided with a circular table; the threaded hole is a stepped threaded hole, and the circular table abuts against the step in the threaded hole. The adjusting hole can be an inner hexagonal hole, and the adjusting hole can be used to conveniently adjust the axial position of the positioning rod by using a tool.

[0013] Preferably, the end of the first chuck is provided with a first groove, and the bottom of the first groove is provided with a first straight groove; one end of the pull rod is provided with a plug, and the plug abuts against the first groove through a first circular surface. The opposite two side surfaces in the first groove can be provided as inclined surfaces, and when the first circular surface abuts against the first groove, the first circular surface is tangent to the inclined surfaces. When the end of the pull rod is fixed by the first fastener, the first circular surface is tangent to the inclined surfaces, and the first straight groove provides a pre-tightening force.

[0014] Preferably, further comprising an elastic component; the other end of the first chuck is provided with a first stepped hole, and the opposite end of the second chuck and the first chuck is provided with a second stepped hole; the elastic component is arranged in the first stepped hole and the second stepped hole, and the two ends of the elastic component abut against the steps in the first stepped hole and the second stepped hole respectively. The elastic component can be a compression spring.

[0015] Preferably, the device further includes a pad with a second through hole along its thickness direction; one end of the pad is flat, and the other end has a second arc surface; the other end of the second clamp has a second groove, the bottom of which has a second straight groove; the pad is mounted on the pull rod through the second through hole, the second arc surface abuts against the second groove, and the first fastener abuts against the end plane of the pad. The two opposite sides of the second groove can be set as inclined surfaces, and when the second arc surface abuts against the second groove, the second arc surface is tangent to the inclined surface. When the end of the pull rod is fixed by the first fastener, the second arc surface is tangent to the inclined surface, and a preload is provided through the second straight groove.

[0016] Based on the same inventive concept, the present invention also provides a right-angle nozzle fixing system, including a right-angle nozzle, a lathe, and a right-angle nozzle turning chuck as described above, wherein the tail shank is connected to the lathe; one end of the right-angle nozzle is provided with a pre-made thread, and the right-angle nozzle is connected to the threaded hole of the positioning sleeve through the pre-made thread; the other end of the right-angle nozzle is the end to be processed, and the end to be processed faces away from the tail shank; the two sides of the right-angle nozzle abut against the first clamping part and the second clamping part, respectively.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. The right-angle nozzle turning chuck of the present invention can realize the turning of right-angle nozzle parts of different sizes and specifications by adjusting the positioning rod axially and changing the positioning sleeve with different thread specifications.

[0019] 2. The right-angle nozzle turning chuck of the present invention is suitable for mass production of right-angle nozzles. It has a simple structure, strong versatility, low manufacturing cost, and is easy to promote.

[0020] 3. The right-angle nozzle turning chuck of the present invention can be connected to the spindle of a lathe or to the chuck of a lathe.

[0021] 4. The right-angle nozzle turning chuck of the present invention achieves floating centering clamping, and can be applied to the turning of right-angle nozzles of different specifications by fine adjustment. Attached Figure Description

[0022] Figure 1 This is an isometric view of the right-angle nozzle turning chuck and right-angle nozzle connection structure of the present invention;

[0023] Figure 2 for Figure 1 Two-dimensional main view ( Figure 2 a) and left-eye ( Figure 2 b) Structural diagram;

[0024] Figure 3 for Figure 1A schematic diagram of the two-dimensional top-view cross-sectional structure;

[0025] Figure 4 for Figure 1 Middle tail peduncle ( Figure 4 a) and clamping body ( Figure 4 b) The split structure diagram;

[0026] Figure 5 for Figure 1 Diagrams showing the connection structure of two different types of tailstock and clamping bodies;

[0027] Figure 6 for Figure 1 Axonometric view of the middle clamp;

[0028] Figure 7 for Figure 1 Front view of the middle bushing ( Figure 7 a) and left view ( Figure 7 b);

[0029] Figure 8 for Figure 1 Two-dimensional structure diagram of the positioning rod;

[0030] Figure 9 for Figure 1 Axonometric view of the center positioning rod;

[0031] Figure 10 for Figure 1 Main view of the middle positioning sleeve ( Figure 10 a) and left view ( Figure 10 b);

[0032] Figure 11 for Figure 1 The third fastener structure diagram;

[0033] Figure 12 for Figure 1 Front view of the first clamp ( Figure 12 a) Left view ( Figure 12 b) and top view ( Figure 12 c);

[0034] Figure 13 for Figure 1 Main view of the second clamp ( Figure 13 a) Left view ( Figure 13 b) and top view ( Figure 13 c);

[0035] Figure 14 for Figure 1 Axonometric view of the center pad block;

[0036] Figure 15 for Figure 1 Two-dimensional structural diagram of the tie rod;

[0037] Figure 16 For Figure 1 The shaft side view of the middle pull rod;

[0038] Figure 17 For Figure 1 Structure diagram of the middle right-angle nozzle.

[0039] In the figure: 1 - tail handle; 2 - clamp body; 3 - bushing; 4 - positioning rod; 5 - second fastener; 6 - positioning sleeve; 7 - third fastener; 8 - first clamp head; 9 - elastic component; 10 - cushion block; 11 - first fastener; 12 - pull rod; 13 - second clamp head; 14 - right-angle nozzle;

[0040] 100 - first mounting column;

[0041] 200 - first mounting hole; 201 - second mounting hole; 202 - fourth mounting hole; 203 - first through hole; 204 - mounting groove; 205 - crosspiece; 206 - first round hole; 207 - first mounting part;

[0042] 301 - third mounting hole; 302 - stepped hole; 303 - step; 304 - second mounting column; 305 - conical groove;

[0043] 401 - first threaded end; 402 - cylinder; 403 - circular truncated cone; 404 - adjusting hole;

[0044] 601 - second round hole; 602 - threaded hole; 603 - external hexagon;

[0045] 701 - conical head;

[0046] 801 - first clamping part; 802 - first connecting hole; 803 - first straight groove; 804 - first stepped hole; 805 - first cylinder; 806 - first recess;

[0047] 1001 - second arc surface; 1002 - second through hole;

[0048] 1201 - second threaded end; 1202 - plug; 1203 - first arc surface;

[0049] 1301 - second clamping part; 1302 - second connecting hole; 1303 - second straight groove; 1304 - second stepped hole; 1305 - second cylinder; 1306 - second recess;

[0050] 1401 - prefabricated thread; 1402 - end to be machined. DETAILED DESCRIPTION

[0051] The application will be described in detail below with reference to the drawings and in conjunction with the embodiments. It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other without conflict. For the convenience of description, if the terms "upper", "lower", "left", "right" appear in the following, they only mean the upper, lower, left and right directions consistent with the drawings themselves, and do not limit the structure.

[0052] As shown in Figure 1 , a right-angle nozzle turning chuck of the application comprises a tail handle 1, a clamping body 2, a bushing 3, a positioning rod 4, a positioning sleeve 6, a first chuck 8, an elastic component 9, a cushion block 10, a pull rod 12 and a second chuck 13, and the tail handle 1 is fixedly connected with the clamping body 2. As shown in Figure 6 , a first through hole 203 is arranged in the clamping body 2 along the length direction, two installation grooves 204 are arranged on the sidewall of the clamping body 2 along the length direction, the two installation grooves 204 are connected through a crosspiece 205, and the two installation grooves 204 are connected with the first through hole 203. Two first circular holes 206 are arranged at the bottom of the clamping body 2, and the two first circular holes 206 can be connected with counterweights according to the needs. Figure 2 and Figure 3 , the first chuck 8 and the second chuck 13 are arranged in the first through hole 203, the pull rod 12 penetrates the first chuck 8 and the second chuck 13 along the length direction, the plug 1202 of the pull rod 12 abuts against the end of the first chuck 8, and the second threaded end 1201 of the pull rod 12 is fixed with the end of the second chuck 13 through the first fastener 11 which can be detachably connected. Figure 1 , Figure 12 and Figure 13 , a first clamping part 801 is arranged on the first chuck 8, and a second clamping part 1301 is arranged on the second chuck 13, the first clamping part 801 and the second clamping part 1301 respectively penetrate the two installation grooves 204 and extend outward, and are respectively arranged on the two sides of the crosspiece 205, and the first clamping part 801 and the second clamping part 1301 form a clamping space of the right-angle nozzle 14 therebetween. Figure 2 , one end of the positioning rod 4 is detachably fixedly connected with the clamping body 2, and the other end is sleeved in the threaded hole 602 of the positioning sleeve 6, and the positioning sleeve 6 is arranged above the clamping space formed by the first clamping part 801 and the second clamping part 1301. The first clamping part 801 and the second clamping part 1301 are symmetrical about the central axis of the threaded hole 602, and the minimum distance between the first clamping part 801 and the second clamping part 1301 is less than or equal to the outer diameter of the right-angle nozzle 14.

[0053] As shown in Figure 4 and Figure 5As shown, one end of the tail handle 1 is a taper handle or straight handle, and the other end is provided with a first mounting column 100. The side wall of the clamp body 2 is provided with a first mounting hole 200 matched with the first mounting column 100, and the first mounting hole 200 is fixedly connected with the first mounting column 100. The taper handle is connected with the main shaft of the lathe, and the straight handle is connected with the chuck of the lathe. The first mounting column 100 and the first mounting hole 200 are connected by interference fit, and the contact surfaces are further connected by welding.

[0054] As shown in Figure 1 and Figure 6 , the top of the clamp body 2 is provided with a first mounting part 207, and the end of the first mounting part 207 is arranged above the clamping space formed by the first clamping part 801 and the second clamping part 1301. The end of the first mounting part 207 is provided with a second mounting hole 201, and the second mounting hole 201 penetrates the first mounting part 207. As shown in Figure 7 , one end of the bushing 3 is provided with a step 303, and the other end is provided with a second mounting column 304. The step 303 is clamped with the first mounting part 207, and the second mounting column 304 is arranged in the second mounting hole 201, and the two are interference fit. The bushing 3 is provided with a third mounting hole 301, and the third mounting hole 301 is a threaded hole, and the bottom of the threaded hole is provided with a step hole 302. As shown in Figure 1 , the positioning rod 4 is connected with the third mounting hole 301 through the first threaded end 401, and is fixed through the second fastener 5, and the second fastener 5 is a nut. As shown in Figure 1 , Figure 6 , Figure 7 and Figure 11 , the side wall of the bushing 3 is provided with a tapered groove 305, the first mounting part 207 is provided with a fourth mounting hole 202, and the third fastener 7 penetrates the fourth mounting hole 202 and is connected with the tapered groove 305. The fourth mounting hole 202 is a threaded hole, and the third fastener 7 is a taper head screw. The taper head screw is arranged in the threaded hole 202 of the clamp body 2, the conical head 701 of the taper head screw is tightly arranged in the tapered groove 305 of the bushing 3, and the bushing 3 is further fastened.

[0055] As shown in Figure 8 and Figure 9 , the positioning rod 4 is a stepped screw structure. One end of the positioning rod 4 is provided with an adjusting hole 404 inwardly, and the end is a first threaded end 401, and the other end is provided with a circular table 403. The first threaded end 401 and the circular table 403 are provided with a cylindrical body 402. The adjusting hole 404 is an internal hexagonal hole, and the position in the axial direction is adjusted by rotating the positioning rod 4 through the internal hexagonal hole. As shown in Figure 10As shown, the threaded hole 602 in the positioning sleeve 6 is a stepped threaded hole, and a second circular hole 601 is arranged on one side of the stepped threaded hole. One end of the positioning rod 4 penetrates through the second circular hole 601 and the threaded hole 602, and the circular platform 403 abuts against the step in the threaded hole 602. An outer hexagon 603 is further arranged on the outside of the sleeve 6, which facilitates the operation of the sleeve 6 by using a wrench for fine adjustment.

[0056] As shown, Figure 12 As shown, one end of the first chuck 8 is provided with a first cylinder 805, which is provided with a first connecting hole 802 and a first stepped hole 804 in the axial direction. The outer end of the first connecting hole 802 is provided with a first recess 806, and the bottom of the first recess 806 is provided with a first straight groove 803. Figure 15 and Figure 16 As shown, one end of the pull rod 12 is provided with a plug 1202, and the other end of the pull rod 12 penetrates through the first connecting hole 802 and the first stepped hole 804. The plug 1202 abuts against the first recess 806 through a first circular arc surface 1203. The opposite sides of the first recess 806 are provided with inclined surfaces, and when the first circular arc surface 1203 abuts against the first recess 806, the first circular arc surface 1203 is tangent to the inclined surfaces. When the second threaded end 1201 of the pull rod 12 is fixed by the first fastener 11, the first circular arc surface 1203 is tangent to the inclined surfaces and provides a pre-tightening force through the first straight groove 803. Figure 13 As shown, the second chuck 13 has the same structure as the first chuck 8, and the second chuck 13 and the first chuck 8 are symmetrically arranged in the first through hole 203 about the crosspiece 205. The elastic member 9 is arranged in the first stepped hole 804 and the second stepped hole 1304, and the two ends of the elastic member 9 abut against the steps in the first stepped hole 804 and the second stepped hole 1304, respectively. Figure 14 As shown, the spacer 10 is provided with a second through hole 1002 in the thickness direction, one end of the spacer 10 is a flat surface, and the other end is provided with a second circular arc surface 1001. The end of the second chuck 13 is provided with a second recess 1306, and the bottom of the second recess 1306 is provided with a second straight groove 1303. The spacer 10 is arranged on the pull rod 12 through the second through hole 1002, the second circular arc surface 1001 abuts against the second recess 1306, and the first fastener 11 abuts against the end flat surface of the spacer 10.

[0057] As shown, Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, the right-angle nozzle turning chuck of the present application is used in connection with a lathe or turning machining center, the taper handle is connected with the main shaft of the machine tool, and the straight handle is clamped with the chuck of the machine tool. When operating, first loosen the first fastener 11, and the first chuck 8 and the second chuck 13 slide in opposite directions along the axis of the pull rod 12 under the pressure of the elastic member 9, so that the first clamping part 801 and the second clamping part 1301 can accommodate the right-angle nozzle 14. As shown, Figure 17 As shown, one end of the right-angle nozzle 14 is provided with a prefabricated thread 1401, and the other end is a to-be-machined end 1402. The right-angle nozzle 14 is connected with the threaded hole 602 of the positioning sleeve 6 through the prefabricated thread end 1401, and the to-be-machined end 1402 of the right-angle nozzle 14 is adjusted to be in the central position between the first clamping part 801 and the second clamping part 1301 by adjusting the axial movement of the positioning rod 4 through the adjusting hole 404, at this time, the first fastener 11 is tightened, and the first chuck 8 and the second chuck 13 slide axially to approach the machined right-angle nozzle 14 and are clamped floatingly (first contact the chuck of the right-angle nozzle 14 part to stop sliding, and the other chuck continues to slide to contact the part). The first straight groove 803 of the first chuck 8 and the second straight groove 1303 of the second chuck 13 are elastically opened under the action of the first circular arc surface 1203 of the pull rod 12 and the first recess 806 and the second circular arc surface 1001 of the cushion block 10 and the second recess 1306, so that the first cylindrical body 805 and the second cylindrical body 1305 are radially tensioned along the first through hole 203 of the clamping body 2, and the axial movement of the first chuck 8 and the second chuck 13 in the clamping direction is further limited.

[0058] Before starting the machining, the to-be-machined end 1402 of the right-angle nozzle 14 part should be kept on the machining rotation axis, the second fastener 5 is loosened, the positioning rod 4 is repeatedly adjusted to move axially, and the rotation axis of the to-be-machined end 1402 of the right-angle nozzle 14 part is fine-adjusted through the outer hexagon 603 on the positioning sleeve 6, the second fastener 5 is locked, the first fastener 11 is tightened, and the to-be-machined right-angle nozzle 14 part is firmly clamped.

[0059] After the turning machining is completed, the first fastener 11 is loosened, the first chuck 8 and the second chuck 13 slide in opposite directions under the pressure of the elastic member 9, the clamping is loosened, the positioning sleeve 6 is screwed, and the machined right-angle nozzle 14 part is removed.

[0060] The right-angle nozzle turning chuck of the present application has the characteristics of simple structure, low manufacturing cost, practicality, and strong universality, and can be widely applied to the turning machining of metal right-angle nozzle parts of various specifications, and only simple training of the operator is needed to master the operation.

[0061] The above embodiments should be understood as being used only for more clearly illustrating the present application, and should not be used for limiting the scope of the present application, and after reading the present application, various equivalent modifications of the present embodiments made by those skilled in the art all fall within the scope defined by the claims of the present application.

Claims

1. A right-angle nozzle turning chuck, characterized in that: It includes a tail shank (1), a clamp body (2), a positioning rod (4), a positioning sleeve (6), a pull rod (12), a first clamp (8), and a second clamp (13), wherein the tail shank (1) is fixedly connected to the clamp body (2); The clamp body (2) has a first through hole (203) along the length direction inside, and two mounting grooves (204) are provided on the side wall of the clamp body (2) along the length direction. The two mounting grooves (204) are connected by a crossbar (205), and both mounting grooves (204) are connected to the first through hole (203). The first clamp (8) and the second clamp (13) are both disposed in the first through hole (203). The pull rod (12) passes through the first clamp (8) and the second clamp (13) along the length direction. One end of the pull rod (12) abuts against the end of the first clamp (8), and the other end of the pull rod (12) is fixed to the end of the second clamp (13) by a first fastener (11) that is detachably connected. The first clamp (8) is provided with a first clamping part (801), and the second clamp (13) is provided with a second clamping part (1301). The first clamping part (801) and the second clamping part (1301) pass through two mounting slots (204) and extend outward, and are respectively set on both sides of the crossbar (205). The clamping space of the right-angle nozzle (14) is formed between the first clamping part (801) and the second clamping part (1301). One end of the positioning rod (4) is detachably fixedly connected to the clamping body (2), and the other end is sleeved in the threaded hole (602) of the positioning sleeve (6). The positioning sleeve (6) is set above the clamping space formed by the first clamping part (801) and the second clamping part (1301).

2. The right-angle nozzle turning chuck according to claim 1, characterized in that: The first clamping part (801) and the second clamping part (1301) are symmetrical about the central axis of the threaded hole (602), and the minimum distance between the first clamping part (801) and the second clamping part (1301) is less than or equal to the outer diameter of the right-angle nozzle (14).

3. The right-angle nozzle turning chuck according to claim 1, characterized in that: One end of the tail shank (1) is a tapered shank or a straight shank, and the other end is provided with a first mounting post (100); the side wall of the clamping body (2) is provided with a first mounting hole (200) that cooperates with the mounting post (100), and the first mounting hole (200) is fixedly connected to the first mounting post (100).

4. The right-angle nozzle turning chuck according to claim 1, characterized in that: It also includes a bushing (3); the top of the clamping body (2) is provided with a first mounting part (207), the end of which is located above the clamping space formed by the first clamping part (801) and the second clamping part (1301); the end of the first mounting part (207) is provided with a second mounting hole (201), which penetrates the first mounting part (207); one end of the bushing (3) is engaged with the first mounting part (207), and the other end is provided with a second mounting post (304) that cooperates with the second mounting hole (201); the bushing (3) is provided with a third mounting hole (301), and the positioning rod (4) is connected to the third mounting hole (301) through the first threaded end (401) and fixed by the second fastener (5).

5. The right-angle nozzle turning chuck according to claim 4, characterized in that: It also includes a third fastener (7), a tapered groove (305) is provided on the side wall of the bushing (3), a fourth mounting hole (202) is provided on the first mounting part (207), and the third fastener (7) passes through the fourth mounting hole (202) and is connected to the tapered groove (305).

6. The right-angle nozzle turning chuck according to claim 4, characterized in that: The positioning rod (4) has an adjustment hole (404) at one end and a frustum (403) at the other end; the threaded hole (602) is a stepped threaded hole, and the frustum (403) abuts against the step inside the threaded hole (602).

7. The right-angle nozzle turning chuck according to claim 1, characterized in that: The first clamp (8) has a first groove (806) at its end, and a first straight groove (803) at the bottom of the first groove (806); one end of the pull rod (12) has a plug (1202), and the plug (1202) abuts against the first groove (806) through the first arc surface (1203).

8. The right-angle nozzle turning chuck according to claim 7, characterized in that: It also includes an elastic component (9); the other end of the first clamp (8) is provided with a first step hole (804), and the opposite ends of the second clamp (13) and the first clamp (8) are provided with a second step hole (1304); the elastic component (9) is disposed in the first step hole (804) and the second step hole (1304), and the two ends of the elastic component (9) abut against the steps in the first step hole (804) and the second step hole (1304) respectively.

9. The right-angle nozzle turning chuck according to claim 8, characterized in that: It also includes a pad (10), which has a second through hole (1002) along the thickness direction; one end of the pad (10) is a plane, and the other end has a second arc surface (1001); the other end of the second clamp (13) has a second groove (1306), and the bottom of the second groove (1306) has a second straight groove (1303); the pad (10) is set on the pull rod (12) through the second through hole (1002), the second arc surface (1001) abuts against the second groove (1306), and the first fastener (11) abuts against the end plane of the pad (10).

10. A right-angle nozzle fixing system, comprising a right-angle nozzle (14) and a lathe, characterized in that: It also includes a right-angle nozzle turning chuck as described in any one of claims 1 to 9, wherein the tail shank (1) is connected to a lathe; one end of the right-angle nozzle (14) is provided with a pre-made thread (1401), and the right-angle nozzle (14) is connected to the threaded hole (602) of the positioning sleeve (6) through the pre-made thread (1401); the other end of the right-angle nozzle (14) is the end to be processed (1402), which faces away from the tail shank (1); the two sides of the right-angle nozzle (14) respectively abut against the first clamping part (801) and the second clamping part (1301).

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