CN219746456U - Positioning device for milling machine workpiece machining - Google Patents

Abstract

The utility model discloses a positioning device for milling machine workpiece processing, which belongs to the field of milling machine workpiece processing and comprises a workbench, wherein a milling machine body is arranged on one side of the workbench, a bench vice for fixing a processed workpiece is arranged on the workbench, a supporting seat is arranged on the workbench, the supporting seat is positioned on one side of the bench vice, a connecting arm is arranged on the supporting seat, a supporting frame is arranged at one end of the connecting arm far away from the supporting seat, and a positioning rod for positioning the processed workpiece is arranged on the supporting frame. The utility model has the effect of improving the processing efficiency of the workpiece.

Description

Positioning device for milling machine workpiece machining

Technical Field

The utility model relates to the field of milling machine workpiece machining, in particular to a positioning device for milling machine workpiece machining.

Background

The milling machine is a machine tool with wide application, and can be used for machining planes (horizontal plane and vertical plane), grooves (key grooves, T-shaped grooves, dovetail grooves and the like), tooth-dividing parts (gears, spline shafts and chain wheels), spiral surfaces (threads and spiral grooves) and various curved surfaces on the milling machine. In addition, the present utility model can be used for cutting the surface, inner and outer surfaces of a revolving body. When the milling machine works, the workpiece is arranged on the worktable or accessories such as the dividing head, the milling cutter rotates to main motion, and the workpiece can obtain the required processing surface by assisting the feeding motion of the worktable or the milling head.

As shown in fig. 1, a conventional workpiece processing device for a milling machine comprises a workbench 1 and a milling machine body 11 arranged on the workbench 1, wherein a bench vice 12 for fixing a processed workpiece is arranged on the workbench 1, and the milling machine body 11 is used for drilling a workpiece fixed on the bench vice 12.

In the related art, the workpiece is fixed on the bench vice, and then the workpiece is drilled by using the milling machine body, and because the drilling position on the workpiece is fixed, the position of the workpiece is adjusted every time the workpiece is fixed by using the bench vice, so that the milling machine body can drill holes at the same position on each workpiece, but when drilling the batch of workpieces, the drilling position of each workpiece needs to be adjusted and confirmed, which is time-consuming and labor-consuming, thereby reducing the machining efficiency of the workpiece.

Disclosure of Invention

In order to solve the problems that the milling hole position of each workpiece to be processed needs to be adjusted, time and labor are wasted and the processing efficiency of the workpiece is reduced, the utility model provides a positioning device for processing the workpiece of a milling machine.

The utility model provides a positioning device for milling machine workpiece processing, which adopts the following technical scheme:

the utility model provides a positioner that milling machine work piece processing was used, includes the workstation, one side of workstation is provided with the milling machine body, be provided with the bench vice that is used for fixed processing work piece on the workstation, be provided with the supporting seat on the workstation, the supporting seat is located one side of bench vice, be provided with the linking arm on the supporting seat, the linking arm is kept away from the one end of supporting seat is provided with the support frame, be provided with the locating lever that is used for carrying out the location to processing work piece on the support frame.

Through adopting above-mentioned technical scheme, place the work piece of waiting to process on the bench vice, after adjusting the processing position of work piece, press from both sides the work piece on the bench vice through the bench vice, the one end that makes the locating lever on the support frame be close to the bench vice and the one end butt that the work piece is close to the support frame, it is spacing to the work piece through the locating lever, confirm the processing position of work piece, when processing the work piece through the milling machine body, only need place the work piece on the bench vice at every turn, remove the work piece, make the one end of work piece and the one end butt that the locating lever is close to the bench vice, thereby confirm the processing position of milling machine body on the work piece, when reducing processing each work piece, need adjust the affirmation to the processing position of work piece, thereby improve the machining efficiency of work piece.

Preferably, the top surface of workstation is seted up flutedly, the bottom surface of supporting seat is provided with the grafting piece, the grafting piece is inserted and is located in the recess, the spout has been seted up to the medial surface of recess, the side of grafting piece is fixed with the slider, the slider slip set up in the spout, be provided with on the workstation and be used for fixing the fixed subassembly of grafting piece.

Through adopting above-mentioned technical scheme, slide the supporting seat through the grafting piece and set up on the workstation, when the size of processing work piece was inconsistent, the length direction adjustment supporting seat of being convenient for along the workstation made the supporting seat drive the linking arm remove, and the linking arm drives the locating lever and removes, after adjusting the position between locating lever and the processing work piece, is fixed in the workstation with the grafting piece through fixed subassembly to be convenient for make the locating lever fix a position the processing work piece of equidimension.

Preferably, the connecting arm comprises a connecting plate, a first circular tube and a second circular tube are respectively fixed at two ends of the connecting plate, the supporting frame is arranged on the second circular tube, the first circular tube is arranged on the supporting seat, a first rotating groove is formed in the outer peripheral surface of the first circular tube, the first rotating groove penetrates through the first circular tube along the circumferential direction of the first circular tube, the fixing component comprises a first rotating shaft inserted in the first circular tube, the first rotating shaft is rotationally connected with the first circular tube, a first through hole is formed in the outer peripheral surface of the first rotating shaft, the first through hole penetrates through to the bottom surface of the supporting seat, a threaded hole is formed in the top surface of the inserting block, a bolt is inserted in the first through hole, the bottom end of the bolt is inserted into the threaded hole, the bolt is in threaded connection with the inserting block, the head of the bolt can be in butt joint with the outer peripheral surface of the first rotating shaft, and a hexagonal hole is formed in the top surface of the bolt.

Through adopting above-mentioned technical scheme, remove the supporting seat, the supporting seat drives the grafting piece and removes on the workstation, after adjusting the position of supporting seat on the workstation, insert hexagonal wrench in the hexagonal hole, rotate hexagonal wrench, make hexagonal wrench drive the bolt rotation, the bolt moves down and makes the head of bolt and the outer peripheral face butt of pivot, continue to rotate the bolt, make the bolt drive pivot move down, pivot one and the inner peripheral face butt of pipe one, the outer peripheral face and the supporting seat butt of pipe one, the bottom surface and the top surface butt of workstation of supporting seat, continue to rotate the bolt, make the grafting piece upwards move, the grafting piece drives the slider upwards movement, the top surface and the interior top surface butt of spout of slider, thereby be fixed in the workstation with the grafting piece.

Preferably, the support frame is including setting up in rotate the seat on the pipe II, rotate the outer peripheral face of seat and seted up the notch, the notch interior top surface with arc wall one has all been seted up to the interior bottom surface of notch, the locating lever inserts and locates in the notch, the outer peripheral face of locating lever with the inner wall of arc wall one is laminated mutually, be provided with on the rotation seat be used for with the locating lever is fixed in the mounting in the arc wall one.

Through adopting above-mentioned technical scheme, insert the locating lever in locating the notch, remove the locating lever, make the locating lever confirm the initial position of processing work piece, then fix the locating lever in the notch through the mounting to the position of locating lever on rotating the seat is convenient for adjust, and the locating lever of being convenient for is fixed a position to the work piece of equidimension not.

Preferably, the second rotary groove is formed in the outer peripheral surface of the second round tube, the second rotary groove penetrates through the second round tube along the circumferential direction of the second round tube, the fixing piece comprises a second rotary shaft inserted into the second round tube, the second rotary shaft is rotationally connected with the second round tube, a stud is fixed on the outer peripheral surface of the second rotary shaft, one end, away from the second rotary shaft, of the stud penetrates through the second rotary groove, a second through hole is formed in the top surface of the rotary seat, the top end of the stud penetrates through the second through hole, a screwing pin is sleeved on the stud, the screwing pin is in threaded connection with the stud, and a rotary handle is fixed on the outer peripheral surface of the screwing pin.

Through adopting above-mentioned technical scheme, after adjusting the position of locating lever on the supporting seat, rotate the turning handle, rotate and drive the round pin of screwing and rotate, the round pin of screwing moves downwards, make the bottom surface of the round pin of screwing and the bottom surface butt of rotating the seat, continue to rotate the turning handle, the double-screw bolt drives the pivot and upwards moves, make the outer peripheral face of pivot second and the inner peripheral face butt of pipe second, make the round pin of screwing compress tightly the seat of rotating on pipe second, continue to rotate the turning handle, the round pin of screwing extrudees the top surface of rotating the seat downwards, make the interior top surface of notch and the interior bottom surface of notch move towards the direction that is close to each other, make the inner wall that two arc grooves first are close to each other and the outer peripheral face butt of locating lever, thereby fix the locating lever on rotating the seat.

Preferably, the connecting seat is sleeved on the stud, the connecting seat is vertically connected with the stud in a sliding manner, the connecting seat is an arc plate, the connecting seat is located between the rotating seat and the second round pipe, the connecting seat is far away from the cambered surface of the rotating seat and the outer peripheral surface of the second round pipe are attached, the connecting seat is far away from the cambered surface of the second round pipe, a supporting surface is arranged on the connecting seat, and the bottom surface of the rotating seat is attached to the supporting surface.

Through adopting above-mentioned technical scheme, be provided with the connecting seat between rotating seat and pipe two, make the bottom surface of rotating the seat laminate mutually with the holding surface on the connecting seat, make the connecting seat support rotating the seat to make the connection between rotating seat and the pipe two more stable.

Preferably, the outer peripheral surface of the first rotating shaft is provided with two limiting plates, the two limiting plates are located on two sides of the first through hole, and the side surfaces, away from each other, of the two limiting plates are attached to the opposite inner side surfaces of the first rotating groove.

Through adopting above-mentioned technical scheme, be provided with two limiting plates on pivot one, make the side that two limiting plates kept away from each other laminate with the relative medial surface of rotation groove one to reduce the possibility that pivot one breaks away from pipe one.

Preferably, the first annular groove is formed in the inner peripheral surface of the threaded hole, the first annular groove penetrates through the top surface of the plug-in block, a circular ring is fixed on the bottom surface of the supporting seat, the central axis of the circular ring is collinear with the central axis of the first through hole, the circular ring is inserted into the first annular groove, and the circular ring is rotationally connected with the plug-in block.

By adopting the technical scheme, the circular ring is inserted into the annular groove, so that the supporting seat is rotationally connected with the inserting block through the circular ring, and the adjusting range of the connecting plate is increased.

Preferably, an annular groove II is formed in the inner peripheral surface of the annular groove I, a lug is fixed on the outer peripheral surface of the annular ring, and the lug is slidably arranged in the annular groove II.

By adopting the technical scheme, when the circular ring rotates in the first annular groove, the convex block rotates in the second annular groove, so that the possibility that the circular ring is separated from the plug-in block is reduced.

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

1. placing a workpiece to be processed on a bench vice, after adjusting the processing position of the workpiece, clamping the workpiece on the bench vice through the bench vice, enabling one end of a positioning rod on a support frame, which is close to the bench vice, to be abutted against one end of the workpiece, which is close to the support frame, to limit the workpiece through the positioning rod, determining the processing position of the workpiece, when the workpiece is processed through a milling machine body, only the workpiece is required to be placed on the bench vice each time, moving the workpiece, enabling one end of the workpiece to be abutted against one end of the positioning rod, which is close to the bench vice, so as to confirm the processing position of the milling machine body on the workpiece, and reducing the need of adjusting and confirming the processing position of the workpiece when each workpiece is processed, thereby improving the processing efficiency of the workpiece;

2. the supporting seat is arranged on the workbench in a sliding manner through the plug-in block, when the sizes of the machined workpieces are inconsistent, the supporting seat is convenient to adjust along the length direction of the workbench, the supporting seat drives the connecting arm to move, the connecting arm drives the positioning rod to move, after the positions between the positioning rod and the machined workpieces are adjusted, the plug-in block is fixed on the workbench through the fixing component, and therefore the positioning rod can conveniently position the machined workpieces with different sizes;

3. and moving the supporting seat, driving the plug block to move on the workbench, inserting the hexagonal wrench into the hexagonal hole after the position of the supporting seat on the workbench is adjusted, rotating the hexagonal wrench to drive the bolt to rotate, enabling the bolt to move downwards so that the head of the bolt is abutted against the outer peripheral surface of the rotating shaft, continuing to rotate the bolt to drive the rotating shaft to move downwards, enabling the rotating shaft to be abutted against the inner peripheral surface of the first round tube, enabling the outer peripheral surface of the first round tube to be abutted against the supporting seat, enabling the bottom surface of the supporting seat to be abutted against the top surface of the workbench, continuing to rotate the bolt, enabling the plug block to move upwards, enabling the plug block to drive the sliding block to move upwards, and enabling the top surface of the sliding block to be abutted against the inner top surface of the sliding groove, thereby fixing the plug block on the workbench.

Drawings

Fig. 1 is a schematic structural view of a milling machine workpiece processing device in the background art.

Fig. 2 is a schematic overall structure of a positioning device for milling machine workpiece processing according to an embodiment of the present utility model.

Fig. 3 is a schematic structural view of a connecting arm according to an embodiment of the present utility model.

Fig. 4 is a cross-sectional view of a first tube in an embodiment of the utility model.

Fig. 5 is an exploded view of the swivel mount and the connector mount according to an embodiment of the utility model.

Reference numerals: 1. a work table; 11. a milling machine body; 12. bench vice; 2. a support base; 21. a support block; 22. an arc-shaped groove II; 23. a plug block; 24. a circular ring; 25. a bump; 26. a groove; 261. an annular groove I; 262. annular groove II; 27. a threaded hole; 28. a slide block; 29. a chute; 3. a connecting arm; 31. a connecting plate; 32. a round tube I; 321. rotating the first groove; 33. a second round tube; 331. a second rotating groove; 34. a first rotating shaft; 35. a limiting plate; 36. a first through hole; 37. a bolt; 38. hexagonal holes; 4. a second rotating shaft; 41. a stud; 42. a connecting seat; 43. a support surface; 5. a support frame; 51. a rotating seat; 511. a second through hole; 52. a notch; 53. an arc-shaped groove I; 54. a positioning rod; 55. screwing the pin; 56. a rotating handle.

Detailed Description

The utility model is described in further detail below with reference to fig. 2-5.

The embodiment of the utility model discloses a positioning device for milling machine workpiece processing.

Referring to fig. 2, a positioning device for milling machine workpiece processing includes a table 1 and a milling machine body 11 provided on one side of the table 1, a bench vice 12 for fixing a processed workpiece being fixed to a top surface of the table 1. One side of the bench vice 12 is provided with a supporting seat 2, a connecting arm 3 is arranged on the supporting seat 2, one end of the connecting arm 3 away from the supporting seat 2 is provided with a supporting frame 5, and a positioning rod 54 for positioning a processed workpiece is arranged on the supporting frame 5.

Referring to fig. 2 and 3, the support base 2 includes a support block 21, and an arc groove two 22 is formed on the top surface of the support block 21. The bottom surface of supporting shoe 21 is provided with plug-in block 23, and a plurality of recesses 26 have been seted up to the top surface of workstation 1, and recess 26 runs through the both sides face of workstation 1, and plug-in block 23 inserts in the recess 26. The plug-in block 23 is slidably connected to the table 1 along the length direction of the table 1 through the groove 26. The opposite inner side surfaces of the groove 26 are provided with sliding grooves 29, the two side surfaces of the plug-in block 23 are fixed with sliding blocks 28, and the sliding blocks 28 are arranged in the sliding grooves 29 in a sliding manner.

Referring to fig. 3 and 4, a first annular groove 261 is formed in the top surface of the plug-in block 23, a circular ring 24 is fixed to the bottom surface of the support block 21, the circular ring 24 is inserted into the first annular groove 261, and the circular ring 24 is rotatably connected with the plug-in block 23. Two protruding blocks 25 are fixed on the outer circumferential surface of the circular ring 24, the two protruding blocks 25 are arranged at equal intervals along the circumferential direction of the circular ring 24, a second annular groove 262 is formed in the inner circumferential surface of the first annular groove 261, and the two protruding blocks 25 are respectively arranged in the second annular groove 262 in a sliding mode.

Referring to fig. 3 and 4, the connecting arm 3 includes a connecting plate 31, and a round tube one 32 and a round tube two 33 are fixed to both ends of the connecting plate 31. The outer back of the first round tube 32 is attached to the inner wall of the second arc-shaped groove 22, a first rotating groove 321 is formed in the outer peripheral surface of the first round tube 32, and the first rotating groove 321 penetrates through the outer peripheral surface of the first round tube 32. The first round tube 32 is internally provided with a first rotary shaft 34, a gap is reserved between the first rotary shaft 34 and the inner circumferential surface of the first round tube 32, the outer circumferential surface of the first rotary shaft 34 is sleeved and fixed with two limiting plates 35, and the side surfaces of the two limiting plates 35, which are far away from each other, are attached to the side surfaces of the first rotary groove 321, which are close to each other. The outer peripheral surface of the first rotating shaft 34 is provided with a first through hole 36, the first through hole 36 penetrates through to the bottom surface of the supporting block 21, the inner bottom surface of the annular groove 261 is provided with a threaded hole 27, and the central axis of the first through hole 36 is collinear with the central axis of the threaded hole 27. A bolt 37 is inserted into the first through hole 36, the bottom end of the bolt 37 penetrates through the circular ring 24 and is inserted into the threaded hole 27, and the bolt 37 is in threaded connection with the inner wall of the threaded hole 27. The head of the bolt 37 can be abutted against the outer peripheral surface of the first rotating shaft 34, and a hexagonal hole 38 is formed in the top surface of the bolt 37.

Referring to fig. 5, the support 5 includes a rotating base 51, a notch 52 is formed on an outer peripheral surface of the rotating base 51, an arc groove one 53 is formed on an inner top surface of the notch 52 and an inner bottom surface of the notch 52, a positioning rod 54 is inserted into the notch 52, and an outer peripheral surface of the positioning rod 54 is attached to an inner wall of the arc groove one 53. The second round tube 33 has a second rotating groove 331 formed in its outer circumferential surface, and the second rotating groove 331 penetrates the outer circumferential surface of the second round tube 33. The second round tube 33 is internally provided with a second rotary shaft 4, and a gap is formed between the outer peripheral surface of the second rotary shaft 4 and the inner wall of the second round tube 33. The outer peripheral surface of the second rotating shaft 4 is fixed with a stud 41, and one end of the stud 41, which is far away from the second rotating shaft 4, passes through the second rotating groove 331.

Referring to fig. 5, a connecting seat 42 is sleeved on the stud 41, the connecting seat 42 is connected with the stud 41 in a sliding manner along the vertical direction, the connecting seat 42 is an arc-shaped plate, and the arc surface of the connecting seat 42, which is close to the second rotating shaft 4, is attached to the outer circumferential surface of the second circular tube 33. The top surface of the rotating seat 51 is provided with a second through hole 511, and the top end of the stud 41 passes through the second through hole 511. The top surface of the connecting seat 42 is provided with a supporting surface 43, and the bottom surface of the rotating seat 51 is attached to the supporting surface 43. The outer peripheral surface of the stud 41 is sleeved with a tightening pin 55, the tightening pin 55 is in threaded connection with the stud 41, and a rotating handle 56 is fixed on the outer peripheral surface of the tightening pin 55.

The implementation principle of the positioning device for milling machine workpiece processing in the embodiment of the utility model is as follows: when the workpiece is required to be drilled, the workpiece is clamped on the workbench 1 through the bench vice 12, the rotary connecting plate 31 is rotated to adjust the height of the rotary seat 51, the rotary seat 51 is consistent with the height of the workpiece, then a hexagonal wrench is inserted into the hexagonal hole 38, the hexagonal wrench is rotated, the hexagonal wrench drives the bolt 37 to rotate, the bolt 37 moves downwards, the head of the bolt 37 is abutted against the outer peripheral surface of the first rotating shaft 34, the hexagonal wrench is continuously rotated, the bolt 37 moves downwards, the outer peripheral surface of the first rotating shaft 34 is abutted against the inner peripheral surface of the first circular tube 32, the outer peripheral surface of the first circular tube 32 is abutted against the inner wall of the second arc-shaped groove 22, and the bottom surface of the supporting block 21 is abutted against the top surface of the workbench 1, so that the first circular tube 32 is fixed on the supporting block 21, and the possibility of rotating the connecting plate 31 is reduced.

The rotary seat 51 is rotated, the position between the positioning rod 54 and the workpiece is regulated, the positioning rod 54 is moved towards the direction approaching the workpiece, one end of the positioning rod 54 approaching the bench vice 12 is abutted against one end of the workpiece approaching the rotary seat 51, the rotary handle 56 is rotated, the rotary handle 56 drives the screwing pin 55 to move downwards, the bottom surface of the screwing pin 55 is abutted against the top surface of the rotary seat 51, the rotary handle 56 is continuously rotated, the stud 41 is moved upwards, the stud 41 drives the rotary shaft two 4 to move upwards, the outer peripheral surface of the rotary shaft two 4 is abutted against the inner peripheral surface of the circular tube two 33, the screwing pin 55 presses the top surface of the rotary seat 51 when moving downwards, the inner top surface of the notch 52 and the inner bottom surface of the notch 52 are moved towards the direction approaching each other, the inner wall of the arc-shaped groove one 53 is abutted against the outer peripheral surface of the positioning rod 54, the positioning rod 54 is fixed on the rotary seat 51, the rotary handle 56 is continuously rotated until the rotary seat 51 is not rotated, the rotary seat 51 is fixedly connected with the circular tube two 33, the positioning rod 54 is tightly fixed on the rotary seat 51, when the workpiece is drilled, the workpiece is only required to be placed on the bench vice 12, the workpiece is fixed on the bench vice 12, the workpiece is clamped by the positioning rod 12 when the positioning rod is used for positioning the workpiece, the drilling position is required, and the workpiece is confirmed, the drilling position is required to be carried out, and the workpiece is well.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims (9)

1. The utility model provides a positioner that milling machine work piece processing was used, includes workstation (1), one side of workstation (1) is provided with milling machine body (11), be provided with bench vice (12) that are used for fixed processing work piece on workstation (1), its characterized in that: be provided with supporting seat (2) on workstation (1), supporting seat (2) are located one side of bench vice (12), be provided with linking arm (3) on supporting seat (2), linking arm (3) are kept away from one end of supporting seat (2) is provided with support frame (5), be provided with on support frame (5) and be used for carrying out locating lever (54) to the processing work piece.

2. A positioning device for milling machine workpiece processing according to claim 1, wherein: the top surface of workstation (1) is seted up flutedly (26), the bottom surface of supporting seat (2) is provided with grafting piece (23), grafting piece (23) are inserted and are located in recess (26), spout (29) have been seted up to the medial surface of recess (26), the side of grafting piece (23) is fixed with slider (28), slider (28) slide set up in spout (29), be provided with on workstation (1) be used for fixing the fixed subassembly of grafting piece (23).

3. A positioning device for milling machine workpiece processing according to claim 2, wherein: the connecting arm (3) comprises a connecting plate (31), a first circular tube (32) and a second circular tube (33) are respectively fixed at two ends of the connecting plate (31), the supporting frame (5) is arranged on the second circular tube (33), the first circular tube (32) is arranged on the supporting seat (2), a first rotating groove (321) is formed in the outer peripheral surface of the first circular tube (32), the first rotating groove (321) penetrates through the first circular tube (32) along the circumferential direction of the first circular tube (32), the fixing assembly comprises a first rotating shaft (34) inserted into the first circular tube (32), the first rotating shaft (34) is connected with the first circular tube (32) in a rotating mode, a first through hole (36) is formed in the outer peripheral surface of the first rotating shaft (34), the first through hole (36) penetrates to the bottom surface of the supporting seat (2), a threaded hole (27) is formed in the top surface of the plug-in block (23), a bolt (37) is inserted into the bottom end of the first rotating groove (321) and is arranged in the threaded hole (27), and the first threaded hole (37) is in the joint corner block (37) with the first threaded hole (37) and the first threaded bolt (37) is formed in a position opposite to the top surface of the first rotating shaft (37).

4. A positioning device for milling machine workpiece processing as defined in claim 3, wherein: the support frame (5) including set up in rotate seat (51) on pipe two (33), notch (52) have been seted up to the outer peripheral face of rotating seat (51), arc wall one (53) have all been seted up to the interior top surface of notch (52) with the interior bottom surface of notch (52), locating lever (54) are inserted and are located in notch (52), the outer peripheral face of locating lever (54) with the inner wall of arc wall one (53) laminating mutually, be provided with on rotating seat (51) be used for with locating lever (54) are fixed in the mounting in arc wall one (53).

5. The positioning device for milling machine workpiece processing according to claim 4, wherein: the rotary groove II (331) has been seted up to the outer peripheral face of pipe II (33), the rotary groove II (331) is followed the circumference of pipe II (33) runs through pipe II (33), the mounting is including inserting locating pivot II (4) in pipe II (33), pivot II (4) with pipe II (33) rotate and are connected, the outer peripheral face of pivot II (4) is fixed with double-screw bolt (41), the double-screw bolt (41) keep away from the one end of pivot II (4) is passed rotary groove II (331), through-hole II (511) have been seted up to the top surface of rotating seat (51), the top of double-screw bolt (41) is passed through-hole II (511), the cover is equipped with on double-screw bolt (41) and screws round pin (55), screw round pin (55) with be fixed with on the outer peripheral face of screw pin (55) swivel handle (56).

6. The positioning device for milling machine workpiece processing according to claim 5, wherein: the connecting seat (42) is sleeved on the stud (41), the connecting seat (42) is vertically connected with the stud (41) in a sliding mode, the connecting seat (42) is an arc-shaped plate, the connecting seat (42) is located between the rotating seat (51) and the round tube II (33), the connecting seat (42) is far away from the cambered surface of the rotating seat (51) and the outer circumferential surface of the round tube II (33) are attached, the connecting seat (42) is far away from the cambered surface of the round tube II (33) and is provided with a supporting surface (43), and the bottom surface of the rotating seat (51) is attached to the supporting surface (43).

7. A positioning device for milling machine workpiece processing as defined in claim 3, wherein: the outer peripheral surface of the first rotating shaft (34) is provided with two limiting plates (35), the two limiting plates (35) are positioned on two sides of the first through hole (36), and the side surfaces, away from each other, of the two limiting plates (35) are attached to the inner side surfaces, opposite to the first rotating groove (321).

8. A positioning device for milling machine workpiece processing as defined in claim 3, wherein: annular groove one (261) has been seted up to the inner peripheral surface of screw hole (27), annular groove one (261) runs through the top surface of grafting piece (23), the bottom surface of supporting seat (2) is fixed with ring (24), the central axis of ring (24) with the central axis collineation of through-hole one (36), ring (24) are inserted and are located in annular groove one (261), ring (24) with grafting piece (23) rotate and are connected.

9. The positioning device for milling machine workpiece processing according to claim 8, wherein: an annular groove II (262) is formed in the inner peripheral surface of the annular groove I (261), a lug (25) is fixed on the outer peripheral surface of the annular ring (24), and the lug (25) is slidably arranged in the annular groove II (262).