CN115519192A - Numerical control thread machining device - Google Patents

Abstract

The invention discloses a numerical control thread processing device, which comprises a chassis, the chassis is connected with a spindle box, the spindle box is connected with a spindle motor, an electric rotary joint, a tool holder and a radial feed mechanism, and the spindle motor is connected to the electric rotary joint through a synchronous belt. , the electric rotary joint is connected with the tool holder and the radial feed mechanism through the rotating shaft. Beneficial effects: the cutter head rotates, the workpiece does not move, and the rotary workpiece is processed by radial feeding. The replacement and adjustment of the radial feed method is the same as that of ordinary CNC lathes, which greatly reduces the threshold and requirements for operators; multiple turning methods are used when cutting workpieces, and the amount of cutting is very small, so the driving power consumption of the spindle is greatly reduced. , so as to play a certain role in energy saving; the transmission of the main shaft is driven by a heavy-duty synchronous belt, which greatly reduces the noise and improves the working environment compared with the current common gear transmission; the cutting tool uses a single head to participate in cutting, with small cutting resistance and low driving power , effectively reducing power consumption.

Description

A CNC thread processing device

technical field

The invention relates to the technical field of numerical control processing devices, in particular to a numerical control thread processing device.

Background technique

At present, steel pipe thread processing manufacturers generally adopt the thread cutting method. Different numbers of die cutters are installed as required. The threading spindle on which the tool is installed rotates at a high speed, and then the axial feed is completed by a servo system or an air cylinder or an oil cylinder. Since most of the steel pipe thread processing is tapered pipe thread, which requires a good sealing effect of the threaded connection, relatively high processing accuracy is required. However, the existing thread processing device is difficult to complete, and there are still some problems. The specific problems are as follows:

1) The most important problem of the existing cutting board and threading method is that it is difficult to adjust. Because the steel pipe thread requires processing and matching precision, the readjustment and installation of the tool must be carefully and complicatedly adjusted, and the adjustment amount cannot be quantified. Very experienced and skilled technicians are required to make adjustments. It sometimes takes several hours or even days to disassemble and assemble the cutter at a time, and a trial cut is required after each adjustment, so a lot of materials will be wasted;

2) The cutting tool of the existing tangent die, because it will be installed several times at the same time, and each cutter head will have several teeth participating in cutting at the same time, resulting in a large cutting resistance, so it will lead to a large driving power of the spindle, resulting in relatively large Large power consumption.

Contents of the invention

In order to comprehensively solve the above-mentioned problems, especially for the deficiencies in the prior art, the present invention provides a numerically controlled thread processing device that can fully solve the above-mentioned problems.

To achieve the above object, the present invention adopts the following technical means:

A numerically controlled thread processing device, comprising a chassis, the top of the chassis is connected to a spindle box, the top of the spindle box is connected to a spindle motor, one side of the spindle box is connected to an electric rotary joint, and the other side of the spindle box is One side is connected with a tool holder and a radial feed mechanism, the spindle motor is connected to the electric rotary joint through a synchronous belt, and the electric rotary joint is connected to the tool holder and the radial feed mechanism through a rotating shaft;

The tool rest and the radial feed mechanism include a turntable connected to the electric rotary joint, the side of the turntable far away from the spindle box is connected with a tool seat connecting plate, and the side of the tool seat connecting plate far away from the turntable is connected with a center Symmetrically distributed outer circular cutter device and thread cutter device, the cutter head of the outer circular cutter device corresponds to the cutter head of the thread cutter device, the side of the rotary table close to the spindle box is connected with a screw bearing seat, and the screw rod A precision ball screw is movably socketed in the bearing seat, and a screw nut is movably socketed on the outside of the precision ball screw, and the screw nut is connected to the connecting plate of the knife seat through a connecting block, and the connecting plate of the knife seat passes through The screw nut moves radially on the side of the turntable, the top of the precision ball screw is rotatably connected to a diverter, and one side of the diverter is connected to a servo motor through a planetary reducer.

A further technical solution of the present invention is that a synchronous encoder is connected to the electrical rotary joint.

A further technical solution of the present invention is that the chassis is connected to the headstock through multiple sets of reinforcing ribs.

A further technical solution of the present invention is that multiple sets of the screw bearing housings are provided, and the multiple sets of the screw bearing housings are evenly distributed on the side of the turntable.

A further technical solution of the present invention is that a linear guide rail is provided on the side of the turntable away from the spindle box, and a guide rail slider is connected to the side of the tool seat connecting plate close to the turntable, and the guide rail slider is slidably connected to the linear guide rail. The screw nut is connected with the slide block of the guide rail of the connecting plate of the knife seat through the connecting block passing through the linear guide rail.

A further technical solution of the present invention is that the outer circular knife device includes an outer circular knife seat connected to the knife seat connecting plate, the outer circular knife seat is detachably connected with an outer circular knife, and the thread knife device includes a A threaded knife seat connected to the knife seat connecting plate, the threaded knife seat is detachably connected with a threaded knife, and the knife head of the threaded knife corresponds to the knife head of the outer circular knife.

Beneficial effects of the present invention:

The working principle of the present invention is that the cutter head rotates, the workpiece does not move, and the rotary workpiece is processed by radial feeding. The replacement and adjustment of the radial feed method is the same as that of ordinary CNC lathes, which greatly reduces the threshold and requirements for operators; the radial feed method adopts multiple turning methods when cutting workpieces, and the amount of cutting is very small, so the spindle The drive power consumption is greatly reduced, which has a certain energy-saving effect; the transmission of the main shaft is driven by a heavy-duty synchronous belt, which greatly reduces noise and improves the working environment compared with the current common gear transmission; the tool uses a single head to participate in cutting, cutting The resistance is small, the driving power is small, and the power consumption is effectively reduced.

Description of drawings

Fig. 1 is a structural schematic diagram one of the present invention;

Fig. 2 is a structural schematic diagram two of the present invention;

Fig. 3 is the structural representation of outer circular knife device of the present invention;

Fig. 4 is the structural representation of screw cutter device of the present invention;

Fig. 5 is the use state figure one of the present invention;

Fig. 6 is the use state figure two of the present invention;

Reference signs: spindle motor 1, synchronous belt 2, synchronous encoder 3, electric rotary joint 4, reinforcing rib 5, chassis 6, spindle box 7, tool rest and radial feed mechanism 8, screw bearing seat 801, wire Rod nut 802, knife seat connecting plate 803, outer circular knife device 804, guide rail slider 805, linear guide rail 806, thread cutter device 807, turntable 808, precision ball screw 809, steering gear 810, planetary reducer 811, servo motor 812, outer circle cutter 8041, outer circle knife holder 8042, thread cutter 8071, thread cutter holder 8072.

detailed description

The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are part of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, therefore, should not be construed as limiting the invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

Example 1

As shown in Fig. 1 to Fig. 6, the present invention provides a kind of numerical control thread processing device, comprises chassis 6, and the top of chassis 6 is connected with spindle box 7, and the top of spindle box 7 is connected with spindle motor 1, and one side of spindle box 7 Connected with an electric rotary joint 4, the other side of the spindle box 7 is connected with a tool rest and a radial feed mechanism 8, the spindle motor 1 is connected to the electric rotary joint 4 through a synchronous belt 2, and the electric rotary joint 4 is connected to the tool through a rotating shaft. Frame and radial feed mechanism 8 transmission connection;

The tool holder and the radial feed mechanism 8 include a turntable 808 that is transmission-connected to the electric rotary joint 4. The side of the turntable 808 away from the headstock 7 is connected to a tool holder connecting plate 803, and the side of the tool holder connecting plate 803 away from the turntable 808 is connected to There are outer circular cutter device 804 and thread cutter device 807 distributed symmetrically in the center, the cutter head of the outer circular cutter device 804 corresponds to the cutter head of the thread cutter device 807, and the side of the rotary table 808 close to the spindle box 7 is connected with a screw bearing seat 801 , a precision ball screw 809 is movably socketed inside the screw bearing housing 801, and a screw nut 802 is movably socketed on the outer side of the precision ball screw 809, and the screw nut 802 is connected with the tool holder connecting plate 803 through a connecting block, and the tool holder The connecting plate 803 moves radially on the side of the turntable 808 through the screw nut 802 , the top of the precision ball screw 809 is rotatably connected to a diverter 810 , and one side of the diverter 810 is connected to a servo motor 812 through a planetary reducer 811 .

working principle

As shown in FIGS. 1 to 6 , the rotary workpiece to be processed is placed between the outer circular cutter device 804 and the thread cutter device 807 . Start the servo motor 812, the servo motor 812 drives the steering gear 810 to rotate through the planetary reducer 811, the steering gear 810 drives the precision ball screw 809 to rotate, and the forward rotation and reverse rotation of the precision ball screw 809 can make the screw nut 802 complete the upward movement , moving down, the screw nut 802 moves up, the screw nut 802 drives the guide rail slider 805 to move up in the linear guide rail 806 through the connecting block, and the linear guide rail 806 moves up to the cutter head of the outer circular knife device 804 to be close to the rotary workpiece to be processed , the screw nut 802 moves down, the screw nut 802 drives the guide rail slider 805 to move down in the linear guide rail 806 through the connecting block, and the linear guide rail 806 moves down the cutter head of the thread cutter device 807 to be close to the rotary workpiece to be processed. After the worker adjusts the outer circular cutter device 804 or the thread cutter device 807, start the spindle motor 1, the spindle motor 1 drives the electric rotary joint 4 to rotate through the synchronous belt 2, the electric rotary joint 4 drives the turntable 808 to rotate through the transmission shaft, and the turntable 808 Drive the cutter head close to the rotary workpiece to be processed for thread processing.

Example 2

As shown in Fig. 1 to Fig. 6, the present invention provides a kind of numerical control thread processing device, comprises chassis 6, and the top of chassis 6 is connected with spindle box 7, and the top of spindle box 7 is connected with spindle motor 1, and one side of spindle box 7 Connected with an electric rotary joint 4, the other side of the spindle box 7 is connected with a tool rest and a radial feed mechanism 8, the spindle motor 1 is connected to the electric rotary joint 4 through a synchronous belt 2, and the electric rotary joint 4 is connected to the tool through a rotating shaft. Frame and radial feed mechanism 8 transmission connection;

The tool holder and the radial feed mechanism 8 include a turntable 808 that is transmission-connected to the electric rotary joint 4. The side of the turntable 808 away from the headstock 7 is connected to a tool holder connecting plate 803, and the side of the tool holder connecting plate 803 away from the turntable 808 is connected to There are outer circular cutter device 804 and thread cutter device 807 distributed symmetrically in the center, the cutter head of the outer circular cutter device 804 corresponds to the cutter head of the thread cutter device 807, and the side of the rotary table 808 close to the spindle box 7 is connected with a screw bearing seat 801 , a precision ball screw 809 is movably socketed inside the screw bearing housing 801, and a screw nut 802 is movably socketed on the outer side of the precision ball screw 809, and the screw nut 802 is connected with the tool holder connecting plate 803 through a connecting block, and the tool holder The connecting plate 803 moves radially on the side of the turntable 808 through the screw nut 802 , the top of the precision ball screw 809 is rotatably connected to a diverter 810 , and one side of the diverter 810 is connected to a servo motor 812 through a planetary reducer 811 .

A synchronous encoder 3 is connected to the electric rotary joint 4 . The synchronous encoder 3 can facilitate the synchronous rotation of the electrical rotary joint 4 and the spindle motor 1 , and can effectively improve the working effect of the electrical rotary joint 4 .

The chassis 6 is connected with the headstock 7 through multiple sets of ribs 5 . This arrangement can effectively improve the tightness between the chassis 6 and the headstock 7 , and can effectively prevent separation between the chassis 6 and the headstock 7 .

Example 3

As shown in Fig. 1 to Fig. 6, the present invention provides a kind of numerical control thread processing device, comprises chassis 6, and the top of chassis 6 is connected with spindle box 7, and the top of spindle box 7 is connected with spindle motor 1, and one side of spindle box 7 Connected with an electric rotary joint 4, the other side of the spindle box 7 is connected with a tool rest and a radial feed mechanism 8, the spindle motor 1 is connected to the electric rotary joint 4 through a synchronous belt 2, and the electric rotary joint 4 is connected to the tool through a rotating shaft. Frame and radial feed mechanism 8 transmission connection;

The tool holder and the radial feed mechanism 8 include a turntable 808 that is transmission-connected to the electric rotary joint 4. The side of the turntable 808 away from the headstock 7 is connected to a tool holder connecting plate 803, and the side of the tool holder connecting plate 803 away from the turntable 808 is connected to There are outer circular cutter device 804 and thread cutter device 807 distributed symmetrically in the center, the cutter head of the outer circular cutter device 804 corresponds to the cutter head of the thread cutter device 807, and the side of the rotary table 808 close to the spindle box 7 is connected with a screw bearing seat 801 , a precision ball screw 809 is movably socketed inside the screw bearing housing 801, and a screw nut 802 is movably socketed on the outer side of the precision ball screw 809, and the screw nut 802 is connected with the tool holder connecting plate 803 through a connecting block, and the tool holder The connecting plate 803 moves radially on the side of the turntable 808 through the screw nut 802 , the top of the precision ball screw 809 is rotatably connected to a diverter 810 , and one side of the diverter 810 is connected to a servo motor 812 through a planetary reducer 811 .

There are multiple groups of screw bearing housings 801 , and the multiple groups of screw bearing housings 801 are evenly distributed on the side of the rotating disk 808 . This setting can facilitate the stable rotation of the precision ball screw 809 and can effectively improve the working efficiency of the precision ball screw 809 .

The side of the turntable 808 away from the headstock 7 is provided with a linear guide rail 806, the side of the tool holder connecting plate 803 close to the turntable 808 is connected with a guide rail slider 805, the guide rail slider 805 is slidingly connected with the linear guide rail 806, and the screw nut 802 passes through the The connecting block of the linear guide rail 806 is connected with the guide rail sliding block 805 of the knife seat connecting plate 803 . This arrangement can facilitate the radial movement of the tool holder connecting plate 803 on the side of the turntable 808 through the screw nut 802 .

The outer circle knife device 804 comprises the outer circle knife seat 8042 that is connected with the knife seat connecting plate 803, and the outer circle knife seat 8042 is detachably connected with the outer circle knife 8041, and the thread knife device 807 includes the screw thread that is connected with the knife seat connecting plate 803. Knife holder 8072, thread cutter holder 8072 is detachably connected with thread cutter 8071, and the cutter head of thread cutter 8071 corresponds to the cutter head of outer circular cutter 8041. This setting can facilitate the user to replace the thread cutter 8071 and the outer circular cutter 8041, and effectively improve the working efficiency of the device for thread processing.

The present invention is an example rather than a limitation to the implementation. For those of ordinary skill in the art, on the basis of the above description, other changes or changes in different forms can also be made, and it is not necessary and impossible to exhaustively enumerate all the implementation modes here, and the obvious Variations or variations are still within the scope of the present invention.

Claims (6)

1. The numerical control thread machining device is characterized by comprising a chassis (6), wherein the top end of the chassis (6) is connected with a spindle box (7), the top end of the spindle box (7) is connected with a spindle motor (1), one side of the spindle box (7) is connected with an electric rotary joint (4), the other side of the spindle box (7) is connected with a tool rest and a radial feeding mechanism (8), the spindle motor (1) is in transmission connection with the electric rotary joint (4) through a synchronous belt (2), and the electric rotary joint (4) is in transmission connection with the tool rest and the radial feeding mechanism (8) through a rotating shaft;

the tool rest and radial feeding mechanism (8) comprises a rotary table (808) in transmission connection with an electric rotary joint (4), one side, far away from a spindle box (7), of the rotary table (808) is connected with a tool apron connecting plate (803), one side, far away from the rotary table (808), of the tool apron connecting plate (803) is connected with an outer circular tool device (804) and a threading tool device (807) which are distributed in a central symmetry mode, a tool bit of the outer circular tool device (804) corresponds to a tool bit of the threading tool device (807), one side, close to the spindle box (7), of the rotary table (808) is connected with a screw rod bearing seat (801), a precise ball screw rod (809) is movably sleeved in the screw rod bearing seat (801), a screw rod nut (802) is movably sleeved on the outer side of the precise ball screw rod (809), the screw rod nut (802) is connected with the tool apron connecting plate (803) through a connecting block, the tool apron connecting plate (803) radially moves on the side of the rotary table (808) through the screw rod nut (802), the top of the precise ball screw rod (809) is rotatably connected with a steering gear (810), and one side of the steering gear (810) is connected with a planetary speed reducer (811).

2. A numerically controlled threading device according to claim 1, characterized in that a synchronous encoder (3) is connected to the electrical rotary joint (4).

3. A numerical control screw machining device according to claim 1, characterized in that the base plate (6) is connected to the headstock (7) by means of sets of ribs (5).

4. A numerical control thread machining apparatus according to claim 1, characterized in that the screw shaft bearing seats (801) are provided in a plurality of sets, and the plurality of sets of screw shaft bearing seats (801) are evenly distributed on the side of the turntable (808).

5. A numerical control thread machining device according to claim 1, characterized in that a linear guide (806) is provided on the side of the turntable (808) away from the headstock (7), a guide slider (805) is connected to the side of the tool apron connecting plate (803) close to the turntable (808), the guide slider (805) is slidably connected to the linear guide (806), and the lead screw nut (802) is connected to the guide slider (805) of the tool apron connecting plate (803) through a connecting block penetrating the linear guide (806).

6. A numerical control thread machining apparatus according to claim 1, wherein the outer circular cutter device (804) includes an outer circular cutter holder (8042) connected to a holder connecting plate (803), the outer circular cutter holder (8042) is detachably connected to an outer circular cutter (8041), the thread cutter device (807) includes a thread cutter holder (8072) connected to the holder connecting plate (803), the thread cutter holder (8072) is detachably connected to a thread cutter (8071), and a cutter head of the thread cutter (8071) corresponds to a cutter head of the outer circular cutter (8041).

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