CN114083363B

CN114083363B - Screw tap processing machine tool

Info

Publication number: CN114083363B
Application number: CN202111428412.1A
Authority: CN
Inventors: 吕曙光; 江浩; 邹飞; 孙建军
Original assignee: Hebei Master Metal Machinery Manufacturing Co ltd
Current assignee: Hebei Master Metal Machinery Manufacturing Co ltd
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2023-03-24
Anticipated expiration: 2041-11-29
Also published as: CN114083363A

Abstract

The application provides a screw tap machining tool, which comprises a base platform and a rotary table, wherein the rotary table is rotatably and liftably mounted on the base platform, the rotary table is coaxial with the base platform, and the axis direction is a first direction; four groups of opposite-top fixture mechanisms are arranged on the rotary table and are circumferentially arranged along a first direction; four groups of grinding mechanisms are arranged on the base platform, the four groups of grinding mechanisms correspond to the four groups of opposite-top clamp mechanisms one to form four groups of stations, and the positions of the stations can be adjusted randomly according to product requirements. The four sets of stations include: the device comprises a grooving station, a corner shoveling station, a thread grinding station and a chip groove station.

Description

Screw tap processing machine tool

Technical Field

The invention relates to the field of screw tap machining, and particularly discloses a screw tap machining machine tool.

Background

In the prior art, a great part of screw taps required by the domestic machining industry are supplied by imports, the productivity of the domestic screw taps is difficult to meet the market demand due to equipment reasons, the domestic screw taps are mainly produced by semi-automatic single-process equipment at present, the equipment capacity is limited, and a semi-automatic screw tap grinding machine is complex in structure and inconvenient to maintain; the production is carried out by adopting an imported high-end machine tool, and the price is high.

According to different needs, the screw tap divide into right angle groove screw tap and spiral flute screw tap, and prior art can't process these two kinds of screw taps simultaneously, and degree of automation is end, and production efficiency is low.

Disclosure of Invention

In view of the above defects or shortcomings in the prior art, the present application aims to provide a tap processing machine tool, which includes a base and a rotary table, wherein the rotary table is rotatably and liftably mounted on the base, the rotary table is coaxial with the base, and the axis direction is a first direction; four groups of opposite-top fixture mechanisms are arranged on the rotary table and are circumferentially arranged along a first direction; be equipped with four groups grinding mechanism on the base station, four groups grinding mechanism with four groups are to the fixture mechanism one-to-one, form four groups stations, include: a grooving station, a corner shoveling station, a thread grinding station and a chip groove station; the grinding mechanism on the grooving station is used for grinding a straight groove on a straight groove tap or a spiral groove on a spiral groove tap; the grinding mechanism on the relief angle station is used for grinding a relief angle formed on a straight-groove screw tap or a spiral-groove screw tap; the grinding mechanism on the thread grinding station is used for grinding threads on a straight-groove screw tap or a spiral-groove screw tap; and the grinding mechanism on the chip pocket station is used for grinding the chip pocket on the straight flute tap.

According to the technical scheme that this application embodiment provided, be located grinding mechanism on the shovel angle station includes: the frame is movably arranged on the base platform, and the moving direction is perpendicular to the first direction; and a grinding wheel mechanism which rotates by taking a second direction as an axis is arranged on the frame, and the second direction is parallel to the first direction.

According to the technical scheme that this application embodiment provided, emery wheel mechanism includes: the grinding wheel is driven by a motor.

According to the technical scheme that this application embodiment provided, butt clamp mechanism includes: the rotary driving mechanism is used for clamping a workpiece and is fixed on the rotary table; the workpiece has a first end and a second end; the rotary driving mechanism is used for clamping a first end of the workpiece; a cantilever fixed to one side of the rotation driving mechanism; the cantilever assembly extends out of the edge of the rotary table and is positioned above the base station; the butting mechanism is slidably arranged on the cantilever along a first direction and used for butting against the second end of the workpiece; two ends of the workpiece are connected to form a vertex line; the first direction is parallel to the opposite vertex line; the driving mechanism is arranged on the cantilever assembly and used for driving the opposite-top mechanism to slide along a first direction; and the auxiliary supporting assembly is arranged on the base body and is used for supporting the opposite-top mechanism.

According to the technical scheme provided by the embodiment of the application, the rotary driving mechanism comprises a clamping sleeve, a first pair of ejecting heads which are coaxially mounted are arranged in the clamping sleeve, and the extending direction of the first pair of ejecting heads is parallel to the first direction.

According to the technical scheme that this application embodiment provided, the centre gripping cover is close to work piece second end one side is equipped with the locking hole, the locking hole is squarely.

According to the technical scheme provided by the embodiment of the application, the opposite-top mechanism comprises a sliding saddle and a second opposite-top head assembly, and a connecting block is mounted on the sliding saddle; the second pair of top head components are slidably mounted on the connecting block, and the sliding direction is perpendicular to the third direction and perpendicular to the first direction.

According to the technical scheme that this application embodiment provided, the second is to top subassembly, including needle frame and adjusting screw, be equipped with the second on the needle frame and to top, the second is to top direction parallel to the third direction.

According to the technical scheme that this application embodiment provided, be equipped with the chute in the needle frame, adjusting screw be last be equipped with the slider that the chute corresponds, adjusting screw penetrates the connecting block is up to chute department, the drive the needle frame displacement.

According to the technical scheme that this application embodiment provided, still include the arm, the arm is installed on the base station, be used for give go up unloading on the opposite vertex anchor clamps mechanism.

The invention has the beneficial effects that: through set up four group grinding mechanism on the base station, set up four group opposite vertex fixture mechanism on the revolving stage, four group opposite vertex fixture mechanism with four group grinding mechanism one-to-ones form fluting station, shovel angle station, grind screw thread station and chip groove station in proper order, can be in order to process the right angle groove screw tap on same platform lathe, can process the spiral groove screw tap again, and application scope is extensive, and the integrated level is high.

Drawings

FIG. 1 is a top view of one embodiment of a tap machine of the present application;

FIG. 2 is a schematic view of one embodiment of a tap making machine of the present application;

FIG. 3 is a schematic view of an opposing clamping mechanism of a tap making machine of the present application;

FIG. 4 is a cross-sectional view of an opposite clamp mechanism of a tap making machine of the present application;

FIG. 5 is a schematic view of a second pair of ram assemblies of a tap making machine of the present application;

FIG. 6 is a schematic view of a pin holder of a tap making machine of the present application;

1. a base station; 2. a turntable; 3. an opposite-top clamp mechanism; 30. a rotation driving mechanism; 31. a cantilever; 32. A butting mechanism; 33. a drive mechanism; 34. an auxiliary support assembly; 300. a clamping sleeve; 301. a first pair of headers; 320. a saddle; 330. connecting blocks; 340. a needle frame; 350. an adjusting screw; 360. a second pair of ejection heads 4 and a grinding mechanism; 40. a frame; 41. a grinding wheel mechanism; 5. a mechanical arm; 6. a slideway; 7. A slider; 8. a chute.

Detailed Description

The following detailed description of the present invention is given for the purpose of better understanding technical solutions of the present invention by those skilled in the art, and the present description is only exemplary and explanatory and should not be construed as limiting the scope of the present invention in any way.

Example 1

A tap machining machine tool comprises a base table 1 and a rotary table 2, wherein the rotary table 2 can be rotatably and liftably mounted on the base table 1, the rotary table 2 is coaxial with the base table 1, and the axis direction is a first direction; four groups of opposite-top fixture mechanisms 3 are arranged on the rotary table 2, and the four groups of opposite-top fixture mechanisms 3 are circumferentially arranged by taking the first direction as an axis; be equipped with four groups of grinding mechanism 4 on the base station 1, four groups of grinding mechanism 4 with four groups are to the 3 one-to-one of top fixture device, form four groups of stations, include: a grooving station, a corner shoveling station, a thread grinding station and a chip groove station;

the grinding mechanism 4 on the slotting station is used for grinding a straight slot on the straight-slot tap or a spiral slot on the spiral-slot tap;

the grinding mechanism 4 on the relief angle station is used for grinding a relief angle formed on a straight-groove screw tap or a spiral-groove screw tap;

the grinding mechanism 4 on the thread grinding station is used for grinding threads on a straight-groove screw tap or a spiral-groove screw tap;

and the grinding mechanism 4 on the chip pocket station is used for grinding the chip pocket on the straight flute tap.

When the technical scheme is used for machining the right-angle groove screw tap, the grooving station, the angle shoveling station, the thread grinding station and the chip groove station are started;

when the technical scheme of this application is used for adding man-hour to spiral groove screw tap, fluting station, shovel angle station and grinding thread station start, chip pocket station control.

Therefore, the technical scheme of the application can process the right-angle groove screw tap on the same machine tool, can process the spiral groove screw tap, and has the advantages of wide application range and high integration level.

The main body of the base station 1 is disc-shaped, a support leg is arranged below the main body, and the rotary table 2 is coaxially arranged above the base station 1; the base platform 1 is internally provided with a main shaft, the main shaft penetrates through the center of the base platform 1, and the top end of the main shaft is fixedly connected with the middle part of the bottom surface of the rotary table 2. The main shaft is a direct execution mechanism for rotation and lifting, optionally, the main shaft is connected with the rotary table 2 through a bolt, so that when the main shaft is lifted or rotated, the rotary table acts along with the main shaft, preferably, the main shaft is a hollow cylinder, the load of a driving mechanism can be reduced, and the operation efficiency is improved.

Furthermore, a lifting drive is arranged in the base platform 1 and used for driving the main shaft to lift and drive the rotary table 2 to lift.

Further, a rotation driving mechanism is arranged at the bottom of the base platform 1, and is used for driving the main shaft to rotate to drive the rotary table 2 to rotate after the rotary table 2 rises.

Lifting drive mechanism with main shaft rotatable coupling, when the main shaft rotates, lifting drive mechanism can not rotate along with it, preferably, 1 bottom of base station is fixed in the board through rag bolt, the board is equipped with the recess, rotary drive mechanism locates 1 bottom of base station in the recess, rotary drive mechanism is servo motor, the servo motor output is equipped with the speed reducer, because servo motor has the advantage that high speed performance is good, strong adaptability, so uses servo motor makes the system still can remain stable and higher control accuracy under high-speed operation.

When the lifting mechanism is used, the main shaft is driven to ascend through the lifting driving mechanism, after the main shaft ascends in place, the main shaft is driven to rotate to a machining station through the rotary driving mechanism, after the main shaft is in place, the lifting driving mechanism drives the main shaft to descend, and after the main shaft descends in place, the lower fluted disc surface and the upper fluted disc surface are meshed to realize indexing positioning of the upper fluted disc and the lower fluted disc, so that the running stability and the working precision of the machine tool are improved.

Example 2

On the basis of embodiment 1, the grinding mechanism 4 located at the shovel angle station includes: a frame 40, wherein the frame 40 is movably arranged on the base platform 1, and the moving direction is perpendicular to the first direction; the frame 40 is provided with a grinding wheel mechanism 41 which rotates with a second direction as an axis, and the second direction is parallel to the first direction.

Further, the grinding wheel mechanism 41 includes: the grinding wheel is driven by a motor.

Wherein, according to the processing station difference, grinding mechanism's connected mode, the motion mode is also different, is respectively:

grooving station: the grinding machine is characterized in that a first base is arranged on the base platform 1, a chute is arranged on the first base, the grinding mechanism can slide on the chute, and the sliding direction is coaxial with the circumferential direction of the rotary table 2. Used for forming a right-angle groove and a spiral groove for the screw tap.

Angle shoveling station: a second base is arranged on the base platform 1, the rack 40 is slidably mounted on the second base, and the sliding direction is tangential to the circumferential direction of the rotary table 2; the grinding wheel mechanism 41 is rotatably mounted on the frame 40 with a second direction as an axis, and the second direction is perpendicular to the rotary table 2 and is used for forming a square-angle groove tap and a spiral groove tap relief angle. The shovel angle is controlled by adopting the double shafts, so that the angle is smooth.

Grinding a thread station: a third base is arranged on the base platform 1, the rack 40 is slidably mounted on the third base, and the sliding direction points to the circle center of the turntable 2; the grinding wheel mechanism is rotatably arranged on the frame 40, and the direction of the rotating shaft is tangential to the circumferential direction of the rotary table. Used for grinding threads of the right-angle groove tap and the spiral groove tap.

Chip pocket station: the base platform 1 is provided with a fourth base, the rack 40 is slidably mounted on the fourth base, and the sliding direction points to the circle center of the rotary table 2. Used for forming chip flutes for the right-angle groove tap.

Further, the opposing jig mechanism 3 includes: the rotary driving mechanism 30 is used for clamping a workpiece and is fixed on the rotary table 2; the workpiece has a first end and a second end; the rotary drive mechanism 30 is used for clamping a first end of the workpiece;

a cantilever 31 fixed to one side of the rotation driving mechanism 30; the cantilever 31 extends out of the edge of the turntable 2 and is positioned above the base platform 1;

an abutting mechanism 32 slidably mounted on the cantilever 31 in a first direction for abutting a second end of the workpiece; two ends of the workpiece are connected to form a vertex line; the third direction is parallel to the diagonal;

a driving mechanism 33 mounted on the cantilever 31 for driving the opposite-vertex mechanism 32 to slide along a first direction; and the auxiliary supporting assembly 34 is arranged on the base platform 1 and used for supporting the opposite-top mechanism 32.

The rotary driving mechanism comprises a clamping sleeve 300, a first pair of ejecting heads 301 which are coaxially mounted are arranged in the clamping sleeve 300, and the extending direction of the first pair of ejecting heads 301 is parallel to the first direction. The clamping sleeve 300 is close to one side of the second end of the workpiece and is provided with a locking hole, and the locking hole is square, so that the workpiece can be locked conveniently and can be driven to rotate.

Preferably, a worm is arranged in the rotary driving mechanism, one end of the worm is connected with a worm wheel, the other end of the worm is connected with a first gear, and one side, far away from the workpiece, of the clamping sleeve 300 is fixedly connected with the worm wheel; four groups of motors are arranged in the base station and correspond to the four stations, second gears are arranged at the output ends of the four groups of motors, and the four groups of first gears are meshed with the four groups of second gears one by one.

The working principle is as follows: when the turntable 2 is lifted, the first gear is separated from the second gear, and the clamping sleeve 300 drives the workpiece to stop rotating; when the rotary table 2 rotates to a required station and falls down, the first gear is meshed with the second gear, and the clamping sleeve 300 drives the workpiece to rotate so as to perform next processing.

The abutting mechanism 32 comprises a sliding saddle 320 and a second abutting head assembly, and a connecting block 330 is mounted on the sliding saddle 320; the second pair of head assemblies is slidably mounted on the connecting block 330, and the sliding direction is perpendicular to the third direction and perpendicular to the first direction.

The second pair of top head components comprises a needle frame 340 and an adjusting screw 350, wherein a second pair of top heads 360 is arranged on the needle frame 340, and the direction of the second pair of top heads 360 is parallel to the third direction.

As shown in fig. 5 and 6, an inclined groove 8 is formed in the needle frame 340, a sliding block 7 corresponding to the inclined groove 8 is arranged on the adjusting screw 350, and the adjusting screw 350 penetrates through the connecting block 330 to the inclined groove 8 to drive the needle frame 340 to move. The fine adjustment of the abutting mechanism 32 is facilitated, and the workpiece can be clamped better.

The saddle 320 is formed by bending a steel material, so that the machining precision is high, and the sliding can be prevented from deviating; the saddle 320 is shaped to fit the cantilever 2. Needle frame 340 passes through the bolt fastening and is in on the saddle 320, connecting block 330 is close to work piece one side and is equipped with chute 6, needle frame 340 is close to connecting block 31 one side is "protruding" profile, is favorable to the slip direction accurate, the slip direction is the arrow direction in fig. 5, is convenient for adjust the position of second opposite vertex head 360.

Preferably, a sealing ring is arranged between the sliding saddle 320 and the cantilever for sliding sealing, which is beneficial to ensuring that the strength of the sliding saddle is not reduced due to impurities entering from the inclined groove in the sliding process.

Preferably, the driving mechanism is a pneumatic or hydraulic cylinder.

Example 3

On the basis of embodiment 2, this application still includes arm 5, arm 5 is installed on base station 1 for give go up unloading on opposite top fixture mechanism 3.

Wherein, still be equipped with the screw tap frame on the base station 1, be located 5 one side of arm for place raw and other materials and finished product material, at every turn the revolving stage rotates next station, and arm 5 is now placed raw and other materials from the screw tap frame slotting station play, places the finished product on chip pocket or the thread grinding station again on the screw tap frame, improved the automation, reduce the human cost, further promote production efficiency.

The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present invention, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.

Claims

1. The utility model provides a screw tap machine tool which characterized in that: the device comprises a base platform (1) and a rotary table (2), wherein the rotary table (2) can be rotatably and liftably mounted on the base platform (1), the rotary table (2) is coaxial with the base platform (1), and the axis direction is a first direction;

four groups of opposite-top clamp mechanisms (3) are arranged on the rotary table (2), and the opposite-top clamp mechanisms (3) are circumferentially arranged by taking a first direction as an axis;

be equipped with four groups grinding mechanism (4) on base station (1), four groups grinding mechanism (4) with four groups are to the top anchor clamps mechanism (3) one-to-one, form four groups stations, include: a grooving station, a corner shoveling station, a thread grinding station and a chip groove station;

the grinding mechanism (4) on the grooving station is used for grinding a straight groove on a straight-groove tap or a spiral groove on a spiral-groove tap;

the grinding mechanism (4) on the relief angle station is used for grinding a relief angle formed on a straight-groove screw tap or a spiral-groove screw tap;

the grinding mechanism (4) on the thread grinding station is used for grinding threads on a straight-groove screw tap or a spiral-groove screw tap;

the grinding mechanism (4) on the chip pocket station is used for grinding a chip pocket on the straight flute tap;

the opposite-top clamp mechanism (3) comprises: the rotary driving mechanism (30) is used for clamping a workpiece and is fixed on the rotary table (2); the workpiece has a first end and a second end; the rotary driving mechanism (30) is used for clamping a first end of the workpiece and driving the workpiece to rotate axially;

a cantilever (31) fixed to one side of the rotary drive mechanism (30); the cantilever (31) extends out of the edge of the rotary table (2) and is positioned above the base platform (1);

an abutting mechanism (32) slidably mounted on the cantilever (31) in a first direction for abutting a second end of the workpiece; two ends of the workpiece are connected to form a vertex line;

the driving mechanism (33) is arranged on the cantilever (31) assembly and used for driving the opposite-vertex mechanism (32) to slide along a third direction, and the third direction is parallel to the opposite-vertex line;

an auxiliary support assembly (34) mounted on the base (1) for supporting the mechanism (32).

2. A tap processing machine according to claim 1, wherein: the grinding mechanism (4) located on the shovel angle station comprises: a frame (40), wherein the frame (40) is movably arranged on the base platform (1), and the moving direction is perpendicular to the first direction; and a grinding wheel mechanism (41) which rotates by taking a second direction as an axis is arranged on the frame (40), and the second direction is parallel to the first direction.

3. A tap processing machine according to claim 2, wherein: the grinding wheel mechanism (41) includes: a grinding wheel, the grinding wheel being driven by the spindle.

4. A tap processing machine as claimed in claim 1, wherein: the rotary driving mechanism (30) comprises a clamping sleeve (300), a first pair of ejecting heads (301) which are coaxially mounted are arranged in the clamping sleeve (300), and the extending direction of the first pair of ejecting heads (301) is parallel to the third direction.

5. A tap processing machine according to claim 4, wherein: and a locking hole is formed in one side, close to the second end of the workpiece, of the clamping sleeve (300), and the locking hole is square.

6. A tap processing machine according to claim 1, wherein: the jacking mechanism (32) comprises a sliding saddle (320) and a second jacking head assembly, wherein a connecting block (330) is arranged on the sliding saddle (320); the second pair of plug assemblies are slidably mounted on the connecting block (330), and the sliding direction is perpendicular to the third direction and perpendicular to the first direction.

7. A tap processing machine according to claim 6, wherein: the second pair of top subassembly, including needle frame (340) and adjusting screw (350), be equipped with second pair top (360) on needle frame (340), second pair top (360) direction is on a parallel with the third direction.

8. A tap processing machine according to claim 7, wherein: be equipped with chute (8) in needle frame (340), be equipped with on adjusting screw (350) with slider (7) that chute (8) correspond, adjusting screw (350) penetrate connecting block (330) until chute (8) department, the drive needle frame (340) displacement.

9. A tap processing machine according to claim 1, wherein: the automatic loading and unloading device is characterized by further comprising a mechanical arm (5), wherein the mechanical arm (5) is installed on the base platform (1) and used for loading and unloading the opposite-top clamp mechanism (3).