CN214602338U - Machining device for large-pitch multi-thread trapezoidal threads in ultra-deep hole - Google Patents
Machining device for large-pitch multi-thread trapezoidal threads in ultra-deep hole Download PDFInfo
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- CN214602338U CN214602338U CN202023256015.4U CN202023256015U CN214602338U CN 214602338 U CN214602338 U CN 214602338U CN 202023256015 U CN202023256015 U CN 202023256015U CN 214602338 U CN214602338 U CN 214602338U
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Abstract
The utility model discloses a large-pitch multi-thread processing device for trapezoidal threads in ultra-deep holes, which comprises a chuck (4) arranged on a lathe headstock (3) through a taper shank (1) and an index plate (2), a center frame (6) arranged on a lathe guide rail (5) and a small tool rest (8) arranged on a lathe middle planker (7); a square tool rest (9) is installed at the top of the small tool rest (8), a tool bar (10) is fixed on the square tool rest (9), a tool bit (11) is installed at the front end of the tool bar (10), and a rough machining threading tool (12), a finish machining threading tool (13) and a centering guide sleeve (14) are installed on the tool bit (11). The utility model provides a big pitch multithread super dark downthehole trapezoidal thread processing's difficult point, both improved product quality, also improved production efficiency simultaneously.
Description
Technical Field
The utility model relates to a coarse pitch multithread super dark downthehole trapezoidal thread's processingequipment belongs to machining technical field.
Background
The large-pitch multi-thread inner trapezoidal thread of the ultra-deep hole is always a difficult point in the technical field of machining. The multi-thread indexing is not easy to be evenly distributed, the rigidity of a cutter seat and a cutter bar for clamping the cutter is poor, and the cutter bar is difficult to be righted. Therefore, the processing efficiency is low, the quality of the processed product is difficult to meet the requirement, and the qualification rate is low.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a coarse pitch multithread is trapezoidal thread's in super deep hole processingequipment to solve the quality problems that exist in the processing of the trapezoidal thread in the coarse pitch multithread super deep hole, and improve machining efficiency, thereby overcome the not enough of prior art.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model discloses a large-pitch multithread super-deep-hole internal trapezoidal thread processing device, which comprises a chuck, a center frame and a small tool rest, wherein the chuck is arranged on a lathe headstock through a taper shank and an index plate; a square knife rest is installed at the top of the small knife rest, a knife bar is fixed on the square knife rest, a knife head is installed at the front end of the knife bar, and a rough machining threading tool, a finish machining threading tool and a centering guide sleeve are installed on the knife head.
In the device, the taper shank comprises a Morse taper shank connected with a lathe headstock, and one end of the Morse taper shank is provided with a threaded hole for tensioning the taper shank; the other end of the Morse taper shank is provided with a flange plate used for connecting the dividing plate, and the periphery of the flange plate is provided with a U-shaped notch and a pin hole used for connecting the dividing plate; the other side of the flange plate is provided with a positioning round table.
In the device, the dividing plate is disc-shaped, a positioning circular groove is arranged on one surface of the dividing plate connected with the taper shank, and a U-shaped notch and a pin hole which correspond to the taper shank and a threaded hole for connecting the chuck are arranged on the dividing plate; one side of the dividing plate provided with the positioning circular groove is connected with a flange plate of the taper shank through a bolt and a pin; the other side of the dividing plate is connected with the chuck through a bolt.
In the device, the cutter bar is of a two-section cylindrical structure with different diameters; a large-diameter section of the cutter bar is provided with a compression plane; the major diameter end of the cutter bar is provided with a cutting fluid interface, the minor diameter end of the cutter bar is provided with a cutter head mounting thread and a compression screw hole, and the cutter head mounting thread is connected with the cutting fluid interface through a cutting fluid channel.
In the device, the cutter head is of a columnar structure, the middle part of the column is provided with a limiting convex ring, one side of the limiting convex ring is a cylinder, and the cylinder is provided with an external thread connected with the cutter bar and a pressing spherical groove; the other side of the limiting convex ring is a square column body, and a rough machining threading tool mounting hole and a finish machining threading tool mounting hole are formed in the square column body; a pressing screw hole is formed in one side of each of the rough machining threading tool mounting hole and the finish machining threading tool mounting hole, and the rough machining threading tool and the finish machining threading tool are fixedly mounted with the tool bit through screws in the pressing screw holes; a righting guide sleeve mounting groove is formed in the square column body; a cutting fluid channel is arranged in the cutter head, and the tail end of the cutting fluid channel is communicated with a cutting fluid outlet positioned on one side of the square column body.
In the device, the righting guide sleeve is of a cylindrical structure with a square hole in the middle; the cylinder is provided with a notch cut along one side surface of the square hole; chamfers are arranged on the upper edge and the lower edge of the notch; the upper square hole plane and the lower square hole plane of the notch are provided with compression screw holes.
In the device, the square tool rest is of a rectangular block structure; a cutter bar clamping hole is arranged on the square cutter frame; a group of compression screw holes are arranged at the top of the cutter bar clamping hole; the square knife rest on one side of the knife rod clamping hole is provided with a U-shaped groove, and the square knife rest on the bottom surface of the U-shaped groove is provided with a group of square knife rest mounting holes.
Since the technical scheme is used, the utility model discloses solved the difficult point of big pitch multithread super deep hole trapezoidal thread processing effectively, both improved product quality, also improved production efficiency simultaneously.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a schematic structural view of the taper shank of the present invention;
fig. 4 is a schematic structural view of the index plate of the present invention;
fig. 5 is a schematic structural view of the cutter bar of the present invention;
FIG. 6 is a schematic view of the tool bit of the present invention;
fig. 7 is a schematic structural view of the centering guide sleeve of the present invention;
fig. 8 is a schematic structural view of the square tool holder of the present invention;
fig. 9 is a schematic view of the structure of a workpiece to be processed.
The labels in the figures are: 1-taper shank, 2-index plate, 3-lathe headstock, 4-chuck, 5-lathe guide rail, 6-center frame, 7-lathe middle carriage, 8-small tool rest, 9-square tool rest, 10-tool bar, 11-tool bit, 12-rough threading tool, 13-finish threading tool, 14-centering guide sleeve, 15-Morse taper shank, 16-threaded hole, 17-flange plate, 18-U-shaped notch, 19-pin hole, 20-positioning circular table, 21-positioning circular groove, 22-pressing plane, 23-cutting fluid interface, 24-tool bit mounting thread, 25-pressing screw hole, 26-cutting fluid channel, 27-limiting convex ring, 28-external thread, 29-pressing spherical groove, 30-square column, 31-rough machining threading tool mounting hole, 32-finish machining threading tool mounting hole, 33-centering guide sleeve mounting groove, 34-cutting fluid outlet, 35-square hole, 36-notch, 37-chamfer, 38-cutter bar clamping hole, 39-U-shaped groove, 40-square tool rest mounting hole, 41-workpiece to be machined and 42-large-pitch multi-thread ultra-deep hole inner trapezoidal thread.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
The utility model is composed by the following method for processing the large-pitch multi-thread trapezoidal thread in the ultra-deep hole, as shown in fig. 1 and fig. 2, the method adopts a CW6163B common lathe to process the large-pitch multi-thread trapezoidal thread in the ultra-deep hole; the processing method specifically comprises the following steps:
clamping one end of a workpiece 41 to be machined, which does not need to be machined with an inner trapezoidal thread, on a chuck 4 of a lathe, wherein the chuck 4 is connected with a main shaft of a lathe headstock 3 of the lathe through an index plate 2;
step two, arranging a central support 6 at the bottom of the other end of the workpiece 41 to be processed, which extends out of the chuck 4, and connecting the bottom of the central support 6 with a lathe guide rail 5;
fixing a cutter bar 10 on a small cutter frame 8 of a lathe carriage 7 through a square cutter frame 9, and connecting a cutting fluid hose with a cutting fluid interface 23 at the tail of the cutter bar 10;
step four, mounting the cutter head 11 at the front end of the cutter bar 10 and fixing the cutter head by a compression screw;
mounting a rough machining threading tool 12 or a finish machining threading tool 13 on a tool bit 11, adjusting the position of the rough machining threading tool 12 or the finish machining threading tool 13, and fixing by using a compression screw;
sixthly, mounting the centralizing guide sleeve 14 on the cutter head 11 and fixing the centralizing guide sleeve through a compression screw;
step seven, starting the lathe, extending the tool bit 11 into the tool withdrawal groove of the inner hole of the workpiece 41 to be processed, starting a cutting fluid pump to lubricate and cool the blade of the rough-machining threading tool 12 or the finish-machining threading tool 13, and starting feeding to process a first trapezoidal thread spiral groove from inside to outside;
step eight, cutting off a power supply of a lathe spindle and withdrawing the lathe after the cutting edge of the rough machining threading tool 12 and/or the finish machining threading tool 13 completely withdraws from the inner hole of the workpiece 41 to be machined, and finishing the machining of the first trapezoidal thread spiral groove;
and step nine, rotating the dividing plate 2 by a certain angle and fixing, and then repeating the step seven and the step eight to finish the processing of the second and the rest trapezoidal thread spiral grooves until all the trapezoidal thread spiral grooves are processed.
The device for processing the large-pitch multi-thread ultra-deep hole internal trapezoidal thread comprises a chuck 4 arranged on a lathe headstock 3 through a taper shank 1 and an index plate 2, a central frame 6 arranged on a lathe guide rail 5 and a small tool rest 8 arranged on a lathe middle planker 7, wherein the chuck 4 is arranged on the lathe headstock, as shown in figures 1 to 8; a square tool rest 9 is installed at the top of the small tool rest 8, a tool bar 10 is fixed on the square tool rest 9, a tool bit 11 is installed at the front end of the tool bar 10, and a rough machining threading tool 12, a finish machining threading tool 13 and a centering guide sleeve 14 are installed on the tool bit 11.
As shown in fig. 3, the taper shank 1 comprises a morse taper shank 15 connected with the lathe headstock 3, and one end of the morse taper shank 15 is provided with a threaded hole 16 for tensioning the taper shank 1; the other end of the Morse taper shank 15 is provided with a flange 17 used for connecting the dividing plate 2, and the periphery of the flange 17 is provided with a U-shaped notch 18 and a pin hole 19 used for connecting the dividing plate 2; the other side of the flange 17 is provided with a positioning round platform 20.
As shown in fig. 4, the indexing disc 2 is disc-shaped, a positioning circular groove 21 is arranged on one surface of the indexing disc 2 connected with the taper shank 1, a U-shaped notch 18 and a pin hole 19 corresponding to the taper shank 1 are arranged on the indexing disc 2, and a threaded hole 16 for connecting a chuck is arranged on the indexing disc; one side of the dividing plate 2 provided with the positioning circular groove 21 is connected with the flange 17 of the taper shank 1 through bolts and pins; the other side of the dividing plate 2 is connected with a chuck 4 through bolts.
As shown in fig. 5, the tool bar 10 has two cylindrical structures with different diameters; a pressing plane 22 is processed on the large-diameter section of the cutter bar 10; the large-diameter end of the cutter rod 10 is provided with a cutting fluid interface 23, the small-diameter end of the cutter rod 10 is provided with a cutter head mounting thread 24 and a compression screw hole 25, and the cutter head mounting thread 24 is connected with the cutting fluid interface 23 through a cutting fluid channel 26.
As shown in fig. 6, the tool bit 11 is a cylindrical structure, a limiting convex ring 27 is arranged in the middle of the cylindrical structure, one side of the limiting convex ring 27 is a cylinder, and the cylinder is provided with an external thread 28 connected with the tool bar 10 and a pressing spherical groove 29; the other side of the limiting convex ring 27 is provided with a square column 30, and the square column 30 is provided with a rough-machining threading tool mounting hole 31 and a finish-machining threading tool mounting hole 32; a pressing screw hole 25 is formed in one side of each of the rough machining threading tool mounting hole 31 and the finish machining threading tool mounting hole 32, and the rough machining threading tool 12 and the finish machining threading tool 13 are fixedly mounted with the tool bit 11 through screws in the pressing screw holes 25; a righting guide sleeve installation groove 33 is arranged on the square column 30; the cutter head 11 is provided with a cutting fluid passage 26, and the end of the cutting fluid passage 26 is communicated with a cutting fluid outlet 34 at one side of the square column 30.
As shown in fig. 7, the centering guide sleeve 14 is a cylindrical structure with a square hole 35 in the middle; the cylinder is provided with a notch 36 cut along one side surface of the square hole 35; chamfers 37 are arranged on the upper edge and the lower edge of the notch 36; the upper square hole plane and the lower square hole plane of the notch 36 are provided with compression screw holes 25.
As shown in fig. 8, the square tool rest 9 is a rectangular block structure; a cutter bar clamping hole 38 is arranged on the square cutter frame 9; a group of compression screw holes 25 are arranged at the top of the cutter bar clamping hole 38; a U-shaped groove 39 is arranged on the square tool rest 9 on one side of the cutter bar clamping hole 38, and a group of square tool rest mounting holes 40 are arranged on the square tool rest 9 on the bottom surface of the U-shaped groove 39.
The working process and principle of the present invention are further explained below:
clamping a workpiece 41 to be machined on a chuck 4, supporting the workpiece by using a center frame 6, hanging the lathe pitch on a pitch increasing baffle, starting the lathe, extending a cutter rod 10 into an inner hole of the workpiece 41 to be machined to a tool withdrawal groove, starting feeding the workpiece 41 to be machined, positively conveying, pressing an opening and closing nut on the lathe, starting cutting machining of an internal thread, and stopping and withdrawing the cutter at an outlet; and the reverse turning moves to the tool withdrawal groove again, and the tool is fed again to start the next thread machining. The utility model discloses an install rough machining threading tool 12 and finish machining threading tool 13 two lathe tools on tool bit 11, rough machining threading tool 12 mainly gets rid of the surplus along the helix direction, and the cutter sets up the slope and is less than 30 angles, and finish machining threading tool 13 mainly guarantees screw thread profile and size, with two trapezoidal thread wire casings of lathe tool processing.
The centre gripping of waiting to process work piece 41 mainly by the chuck 4 of lathe with the utility model discloses an index plate 2, taper shank 1, dowel, tightening screw, connecting screw etc. constitute. The chuck 4 and the dividing plate 2 are connected into a whole by tightening screws; then the taper shank 1, the positioning pin and the connecting screw are connected into a whole; then the tool is matched with a taper hole on a lathe spindle and is tensioned by a tensioning bolt to be integrated with a machine tool.
During indexing, the connecting screw between the taper shank 1 and the indexing disc 2 is loosened, the positioning pin is taken out, the chuck 4 of the lathe is rotated by 360/n degrees, then the positioning pin is installed, and the connecting screw between the taper shank 1 and the indexing disc 2 is tightened, so that the indexing is convenient.
The utility model discloses a cutter arbor part mainly comprises cutter arbor 10, tool bit 11, the uide bushing of righting 14, rough machining threading tool 12 and finish machining threading tool 13, and the tetragon 30 sliding fit on the uide bushing 14 of righting and the tool bit 11, the uide bushing of righting 14 and the little clearance sliding fit of the 41 holes of work piece of waiting to process, the uide bushing of righting 14 mainly plays the effect of direction and righting cutter arbor 10. The utility model discloses the cutter arbor 10 cross-section has been increased to ensure cutter arbor 10's rigidity. The square tool rest 9 consists of a special tool rest and a compression screw.
The utility model adopts the dividing disc to realize the dividing of the large-pitch multi-thread trapezoidal thread, adopts the center frame to reduce the jumping of the end of the workpiece to be processed, and simultaneously adopts the centralizing guide sleeve to prevent the bending cutter relieving during the cutter bar processing; install rough machining threading tool and finish machining threading tool respectively on the tool bit and cut in order to improve machining efficiency, directly lead the cutting edge of lathe tool with cutting fluid through the infusion passageway during processing to improve cutting quality. The utility model provides a big pitch multithread super dark downthehole trapezoidal thread processing's difficult point, both improved product quality, also improved production efficiency simultaneously.
Claims (7)
1. A large-pitch multi-thread processing device for trapezoidal threads in an ultra-deep hole comprises a chuck (4) arranged on a lathe headstock (3) through a taper shank (1) and an index plate (2), a center frame (6) arranged on a lathe guide rail (5) and a small tool rest (8) arranged on a lathe middle carriage (7); the method is characterized in that: a square tool rest (9) is installed at the top of the small tool rest (8), a tool bar (10) is fixed on the square tool rest (9), a tool bit (11) is installed at the front end of the tool bar (10), and a rough machining threading tool (12), a finish machining threading tool (13) and a centering guide sleeve (14) are installed on the tool bit (11).
2. The apparatus for processing large-pitch multithread extra-deep hole internal trapezoidal threads according to claim 1, wherein: the taper shank (1) comprises a Morse taper shank (15) connected with the lathe headstock (3), and one end of the Morse taper shank (15) is provided with a threaded hole (16) for tensioning the taper shank (1); the other end of the Morse taper shank (15) is provided with a flange plate (17) used for connecting the dividing plate (2), and the periphery of the flange plate (17) is provided with a U-shaped notch (18) and a pin hole (19) used for connecting the dividing plate (2); the other side of the flange plate (17) is provided with a positioning round platform (20).
3. The apparatus for processing large-pitch multithread extra-deep hole internal trapezoidal threads according to claim 1, wherein: the indexing disc (2) is disc-shaped, a positioning circular groove (21) is formed in the surface, connected with the taper shank (1), of the indexing disc (2), a U-shaped notch (18) and a pin hole (19) corresponding to the taper shank (1) are formed in the indexing disc (2), and a threaded hole (16) for connecting a chuck is formed in the indexing disc; one surface of the dividing plate (2) provided with a positioning circular groove (21) is connected with a flange plate (17) of the taper shank (1) through bolts and pins; the other side of the dividing disc (2) is connected with the chuck (4) through a bolt.
4. The apparatus for processing large-pitch multithread extra-deep hole internal trapezoidal threads according to claim 1, wherein: the cutter bar (10) is of a structure with two sections of cylinders with different diameters; a large-diameter section of the cutter bar (10) is processed with a compression plane (22); the large-diameter end of the cutter rod (10) is provided with a cutting fluid interface (23), the small-diameter end of the cutter rod (10) is provided with a cutter head mounting thread (24) and a compression screw hole (25), and the cutter head mounting thread (24) is connected with the cutting fluid interface (23) through a cutting fluid channel (26).
5. The apparatus for processing large-pitch multithread extra-deep hole internal trapezoidal threads according to claim 1, wherein: the tool bit (11) is of a columnar structure, a limiting convex ring (27) is arranged in the middle of the column, one side of the limiting convex ring (27) is a cylinder, and an external thread (28) and a pressing spherical groove (29) which are connected with the tool bar (10) are arranged on the cylinder; the other side of the limiting convex ring (27) is provided with a square column body (30), and the square column body (30) is provided with a rough machining threading tool mounting hole (31) and a finish machining threading tool mounting hole (32); a pressing screw hole (25) is formed in one side of each of the rough machining threading tool mounting hole (31) and the finish machining threading tool mounting hole (32), and the rough machining threading tool (12) and the finish machining threading tool (13) are fixedly mounted with the tool bit (11) through screws in the pressing screw holes (25); a righting guide sleeve mounting groove (33) is arranged on the square column body (30); a cutting fluid channel (26) is arranged in the cutter head (11), and the tail end of the cutting fluid channel (26) is communicated with a cutting fluid outlet (34) positioned on one side of the square column body (30).
6. The apparatus for processing large-pitch multithread extra-deep hole internal trapezoidal threads according to claim 1, wherein: the centralizing guide sleeve (14) is of a cylindrical structure, and a square hole (35) is formed in the middle of the centralizing guide sleeve; the cylinder is provided with a notch (36) cut along one side surface of the square hole (35); chamfers (37) are arranged on the upper edge and the lower edge of the notch (36); the upper square hole plane and the lower square hole plane of the notch (36) are provided with compression screw holes (25).
7. The apparatus for processing large-pitch multithread extra-deep hole internal trapezoidal threads according to claim 1, wherein: the square tool rest (9) is of a rectangular block structure; a cutter bar clamping hole (38) is arranged on the square cutter frame (9); a group of compression screw holes (25) are arranged at the top of the cutter bar clamping hole (38); a U-shaped groove (39) is arranged on the square tool rest (9) on one side of the cutter bar clamping hole (38), and a group of square tool rest mounting holes (40) are arranged on the square tool rest (9) on the bottom surface of the U-shaped groove (39).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023256015.4U CN214602338U (en) | 2020-12-29 | 2020-12-29 | Machining device for large-pitch multi-thread trapezoidal threads in ultra-deep hole |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023256015.4U CN214602338U (en) | 2020-12-29 | 2020-12-29 | Machining device for large-pitch multi-thread trapezoidal threads in ultra-deep hole |
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| CN214602338U true CN214602338U (en) | 2021-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202023256015.4U Active CN214602338U (en) | 2020-12-29 | 2020-12-29 | Machining device for large-pitch multi-thread trapezoidal threads in ultra-deep hole |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115674459A (en) * | 2022-11-16 | 2023-02-03 | 曲靖恒毅炭素科技有限公司 | High-efficient processingequipment of graphite carbon circle |
-
2020
- 2020-12-29 CN CN202023256015.4U patent/CN214602338U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115674459A (en) * | 2022-11-16 | 2023-02-03 | 曲靖恒毅炭素科技有限公司 | High-efficient processingequipment of graphite carbon circle |
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