CN209888213U - Screw servo press with randomly controllable screw pitch - Google Patents
Screw servo press with randomly controllable screw pitch Download PDFInfo
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- CN209888213U CN209888213U CN201920070656.9U CN201920070656U CN209888213U CN 209888213 U CN209888213 U CN 209888213U CN 201920070656 U CN201920070656 U CN 201920070656U CN 209888213 U CN209888213 U CN 209888213U
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 9
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- 230000005540 biological transmission Effects 0.000 abstract description 10
- 238000003754 machining Methods 0.000 abstract description 3
- 238000010079 rubber tapping Methods 0.000 abstract description 2
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Abstract
The screw servo press with randomly controllable screw pitch comprises an integrated direct-acting component, a rotary workbench and a C-shaped machine body 6, wherein the motion axis of the integrated direct-acting component is in the vertical direction and is fixed at the top end of the C-shaped machine body 6; the rotary worktable is fixedly arranged in a concave cavity which is surrounded by the C-shaped machine body 6; the integrated direct-acting component is driven by a servo motor to realize the linear motion of a lead screw in the planetary roller lead screw pair, the rotary worktable is driven by the servo motor to realize the rotary motion, the two motions are combined to realize the relative spiral motion, and the adjustment and the control of the screw pitch are realized through the detection and the feedback of the magnetic grid ruler to the motion. The press machine realizes screw machining with adjustable screw pitch, has the advantages of simple structure, high transmission efficiency and working efficiency, accurate control and the like, and is suitable for the forming machining of tapping and extruding screw rods.
Description
Technical Field
The utility model belongs to the technical field of machining technology and equipment, a controllable screw servo press is wantonly related to pitch.
Background
In recent years, with the maturity and development of an alternating current servo control technology, servo presses in various forms appear in sequence, and a motor-driven screw press and a hydraulic drive servo screw press appear in sequence according to the difference of drive motors in the market.
The existing motor-driven screw press is generally driven by a motor, and a mechanical transmission system is utilized to transmit the power of the motor to a screw so as to drive the screw. The common screw and nut mechanism is gradually eliminated due to the defects of large transmission friction resistance, low transmission efficiency and the like; the bearing capacity and the axial contact rigidity of the ball screw pair are insufficient, so that the defects of insufficient rigidity, short service life and the like of a linear transmission system exist, and the ball screw pair is not suitable for a transmission device of a press machine; as a novel transmission mechanism, the planetary roller screw pair has the outstanding advantages of small friction force, high transmission efficiency, large bearing capacity, long service life, small size and the like, and is very suitable for the working requirements of a press machine.
Therefore, based on the characteristics of the planetary roller screw pair, the direct-drive technology of the alternating-current servo permanent magnet motor is adopted, the screw servo press machine which is directly driven by the alternating-current servo motor and can randomly adjust the pitch of the working section is designed, and the press processing of screw parts with different lead lengths and screw parts with variable pitch is realized through the servo control of two different motors.
Disclosure of Invention
The utility model provides a screw servo press that pitch is controllable wantonly realizes the pressure processing of different helical pitch spirals and variable pitch spiral part.
The utility model adopts the following technical scheme:
the screw servo press with randomly controllable screw pitch comprises an integrated direct-acting component, a rotary workbench and a C-shaped machine body 6, wherein the motion axis of the integrated direct-acting component is in the vertical direction and is fixed at the top end of the C-shaped machine body 6; the rotary worktable is fixedly arranged in a concave cavity which is surrounded by the C-shaped machine body 6; the linear feeding direction of the integrated linear motion component is vertical to the rotary plane of the rotary worktable; the rotary worktable is of a hollow structure.
The integrated direct-acting component comprises a servo screw motor and a planetary roller screw pair; the servo lead screw motor comprises a shell 4, an upper end cover 1, a lower end cover 5, a stator core 16, a permanent magnet 17, a stator winding 18 and a motor rotor 19; the stator iron core 16, the permanent magnets 17 and the stator windings 18 form a motor stator, the permanent magnets 17 are uniformly distributed in the stator iron core 16, and the stator windings 18 are wound on teeth of the stator iron core 16; the motor rotor 19 is in a convex tooth shape, the motor rotor 19 is fixedly connected to the outer side of the nut 20, the motor rotor 19 is respectively connected with the upper end cover 1 and the lower end cover 5 through the bearing 3, the upper end cover 1 and the lower end cover 5 are both hollow transparent covers and are mutually fixedly connected through the machine shell 4 to form a shell of the servo screw motor, and the lower end cover 5 is fixed on the top end face of the C-shaped machine body 6; a through hole key groove is arranged in a hollow round hole of the upper end cover 1; a rotary transformer or an encoder is arranged between the motor rotor and the upper end cover;
the planetary roller screw pair comprises a nut 20, a screw 21, a plurality of rollers 22, two inner gear rings 24, two retainers 25 and two spring retainer rings 26; the roller 22 is a middle screw rod, and has the same structure with axially outer straight teeth and cylindrical surfaces at two ends; a plurality of rollers 22 are uniformly distributed in the inner hole of the nut 20 and the outer side of the screw 21, and the nut 20 is coaxially connected with the screw 21; two inner gear rings 24 and two retainers 25 are fixed at two ends of the nut 20 through two spring retainer rings 26; the retainer 25 is a hollow ring shape with a plurality of cylindrical holes uniformly distributed, cylindrical surfaces at two ends of a plurality of rollers 22 are sleeved in the plurality of cylindrical holes of the retainer 25 in an empty way, and axial external straight teeth at two ends of the rollers 22 are meshed with the inner gear ring 24; one end of the screw 21 is fixed with a guide flat key 2, and the head of the other end is provided with a flange plate 23; the hollow through hole key groove of the upper end cover 1 is matched with the guide flat key 2; a linear grating ruler is arranged between the end part of the lead screw 21 and the C-shaped body 6.
The rotary working table comprises a chuck 7, a rotary table surface 8, a gear ring 9, a box body 10, a servo rotary table motor 11, a speed reducer 12, a mounting plate 13, an external gear 14 and a rotary table bearing 15; the servo turntable motor 11 is coaxially connected with the speed reducer 12; the speed reducer 12 is fixedly connected with the box body 10 through a mounting plate 13; the speed reducer 12 is in key connection with an external gear 14, and the external gear 14 is meshed with the gear ring 9; the gear ring 9 is fixedly connected with the turntable surface; the rotary table surface 8 is of a hollow disc structure, is connected with the box body 10 through a rotary table bearing 15 and rotates around a fixed shaft relative to the box body 10; the chuck 7 is arranged on the rotary table surface 8, and the center of the chuck 7 is coaxial with the central hole of the rotary table surface 8; the box body 10 is fixedly connected in the concave cavity of the C-shaped machine body 6; an annular photoelectric encoder is arranged between the turntable surface 8 and the box body 10.
The utility model discloses beneficial effect: the servo screw motor and the planetary roller screw form an integrated direct-acting component to realize the linear motion of the screw; the rotary and hollow structure of the rotary table is realized through the transmission of a servo rotary table motor and a gear ring; closed-loop control is formed between the annular encoder and the servo turntable motor and between the magnetic grid ruler and the servo lead screw motor, and spiral motion with any lead is formed between the rotary table surface and the lead screw through motion control of the servo turntable motor and the servo lead screw motor. Meanwhile, the screw pitch can be adjusted at any time in the relative movement process of the screw rod and the rotary table surface. The device adopts a direct driving mode of two servo motors, has the advantages of simple structure, high transmission efficiency and working efficiency, accurate control and the like, and is suitable for the forming processing of tapping and extruding screws.
Drawings
Fig. 1 is a general structure diagram of the present invention.
Fig. 2 is a sectional view a-a in fig. 1.
Fig. 3 is a sectional view B-B in fig. 1.
Detailed Description
The present invention is described in detail below with reference to the attached drawings:
as shown in fig. 1, the screw servo press with randomly controllable screw pitch comprises three parts, namely an integrated direct-acting part, a rotary worktable and a C-shaped machine body 6, wherein the motion axis of the integrated direct-acting part is in a vertical direction and is fixed at the top end of the C-shaped machine body 6; the rotary worktable is fixedly arranged in a concave cavity which is surrounded by the C-shaped machine body 6; the linear feeding direction of the integrated linear motion component is vertical to the rotary plane of the rotary worktable; the rotary worktable is of a hollow structure.
As shown in fig. 3, the servo motor includes a casing 4, an upper end cover 1, a lower end cover 5, a stator core 16, a permanent magnet 17, a stator winding 18 and a motor rotor 19; the stator iron core 16, the permanent magnets 17 and the stator windings 18 form a motor stator, the permanent magnets 17 are uniformly distributed in the stator iron core 16, and the stator windings 18 are wound on teeth of the stator iron core 16; the motor rotor 19 is in a convex tooth shape, the motor rotor 19 is fixedly connected to the outer side of the nut 20, the motor rotor 19 is respectively connected with the upper end cover 1 and the lower end cover 5 through the bearing 3, the upper end cover 1 and the lower end cover 5 are both hollow transparent covers and are mutually fixedly connected through the machine shell 4 to form a shell of the servo motor, and the lower end cover 5 is fixed on the top end surface of the C-shaped machine body 6; a through hole key groove is arranged in a hollow round hole of the upper end cover 1; a rotary transformer or an encoder is arranged between the motor rotor and the upper end cover;
the planetary roller screw pair comprises a nut 20, a screw 21, a plurality of rollers 22, two inner gear rings 24, two retainers 25 and two spring retainer rings 26; the roller 22 is a middle screw rod, and has the same structure with axially outer straight teeth and cylindrical surfaces at two ends; a plurality of rollers 22 are uniformly distributed in the inner hole of the nut 20 and the outer side of the screw 21, and the nut 20 is coaxially connected with the screw 21; two inner gear rings 24 and two retainers 25 are fixed at two ends of the nut 20 through two spring retainer rings 26; the retainer 25 is a hollow ring shape with a plurality of cylindrical holes uniformly distributed, cylindrical surfaces at two ends of a plurality of rollers 22 are sleeved in the plurality of cylindrical holes of the retainer 25 in an empty way, and axial external straight teeth at two ends of the rollers 22 are meshed with the inner gear ring 24;
as shown in fig. 2, one end of a screw 21 is fixed with a guide flat key 2, and the head of the other end is provided with a flange 23; the hollow through hole key groove of the upper end cover 1 is matched with the guide flat key 2; a linear grating ruler is arranged between the end part of the screw rod 21 and the upper end cover.
The rotary working table comprises a chuck 7, a rotary table surface 8, a gear ring 9, a box body 10, a servo rotary table motor 11, a speed reducer 12, a mounting plate 13, an external gear 14 and a rotary table bearing 15; the servo turntable motor 11 is coaxially connected with the speed reducer 12; the speed reducer 12 is fixedly connected with the box body 10 through a mounting plate 13; the speed reducer 12 is in key connection with an external gear 14, and the external gear 14 is meshed with the gear ring 9; the gear ring 9 is fixedly connected with the turntable surface; the rotary table surface 8 is of a hollow disc structure, is connected with the box body 10 through a rotary table bearing 15 and rotates around a fixed shaft relative to the box body 10; the chuck 7 is arranged on the rotary table surface 8 and used for processing and clamping workpieces and realizing rotary motion, and the center of the chuck 7 is coaxial with the central hole of the rotary table surface 8; the box body 10 is fixedly connected in the concave cavity of the C-shaped machine body 6; an annular photoelectric encoder is arranged between the turntable surface and the box body.
The utility model discloses a working process:
under the enabling action of the servo drive controller, the motor rotor 19 rotates to drive the nut 20 integrated with the motor rotor 19 to rotate, and the nut 20 and the motor rotor are fixed on the upper end cover and the lower section cover through bearings, namely, the nut and the motor rotor can only rotate relative to the C-shaped body; and the lead screw 21 connected with the nut 20 is limited to rotate by the guide flat key 2, the rotation of the nut 20 drives the lead screw 21 to slide along the axial direction, so that the translation is realized, the moving position is monitored in real time by using a grating ruler between the lead screw 21 and the C-shaped body 6, and the moving position is fed back to the servo drive controller.
Meanwhile, the servo turntable motor 11 rotates relative to the box body 10 through the transmission of the speed reducer 12, the outer gear 14 and the inner gear ring 9 under the enabling effect of the servo drive controller, after the integrated servo motor is electrified, the rotation of the rotor 19 drives the nut 20 to rotate, an annular photoelectric encoder is arranged between the turntable surface 8 and the box body 10, the position of the turntable surface 8 is fed back to the servo drive controller in real time, and linkage is formed with the direct movement of the lead screw 21.
Claims (3)
1. The utility model provides a screw servo press that pitch is controllable wantonly which characterized by: the device comprises an integrated direct-acting component, a rotary workbench and a C-shaped machine body (6), wherein the motion axis of the integrated direct-acting component is in the vertical direction and is fixed at the top end of the C-shaped machine body (6); the rotary worktable is fixedly arranged in a concave cavity which is semi-surrounded by the C-shaped machine body (6); the linear feeding direction of the integrated linear motion component is vertical to the rotary plane of the rotary worktable; the rotary worktable is of a hollow structure;
the integrated direct-acting component comprises a servo screw motor and a planetary roller screw pair; the servo lead screw motor comprises a shell (4), an upper end cover (1), a lower end cover (5), a stator core (16), a permanent magnet (17), a stator winding (18) and a motor rotor (19); the stator iron core (16), the permanent magnets (17) and the stator windings (18) form a motor stator, the permanent magnets (17) are uniformly distributed in the stator iron core (16), and the stator windings (18) are wound on teeth of the stator iron core (16); the motor rotor (19) is in a convex tooth shape, the motor rotor (19) is fixedly connected to the outer side of the nut (20), the motor rotor (19) is respectively connected with the upper end cover (1) and the lower end cover (5) through the bearing (3), the upper end cover (1) and the lower end cover (5) are both hollow transparent covers and are mutually and fixedly connected through the shell (4) to form a shell of the servo screw motor, and the lower end cover (5) is fixed on the top end face of the C-shaped machine body (6); a through hole key groove is arranged in a hollow round hole of the upper end cover (1); between the motor rotor and the upper end cap according to a rotary transformer or encoder.
2. A screw servo press of any controllable pitch according to claim 1, wherein: the planetary roller screw pair comprises a nut (20), a screw (21), a plurality of rollers (22), two inner gear rings (24), two retainers (25) and two spring retainer rings (26); the roller (22) is a middle screw rod, and has the same structure with axial outer straight teeth and cylindrical surfaces at two ends; the plurality of rollers (22) are uniformly distributed in the inner hole of the nut (20) and the outer side of the screw rod (21), and the nut (20) is coaxially connected with the screw rod (21); the two inner gear rings (24) and the two retainers (25) are fixed at two ends of the nut (20) through two spring retainer rings (26); the retainer (25) is in a hollow ring shape with a plurality of uniformly distributed cylindrical holes, cylindrical surfaces at two ends of a plurality of rollers (22) are empty in the plurality of cylindrical holes of the retainer (25), and axial external straight teeth at two ends of the rollers (22) are meshed with the inner gear ring (24); one end of the screw rod (21) is fixed with a guide flat key (2), and the head part of the other end is provided with a flange plate (23); the hollow through hole key groove of the upper end cover (1) is matched with the guide flat key (2) for installation; a linear grating ruler is arranged between the end part of the lead screw (21) and the C-shaped body (6).
3. A screw servo press of any controllable pitch according to claim 1, wherein: the rotary worktable comprises a chuck (7), a rotary table surface (8), a gear ring (9), a box body (10), a servo rotary table motor (11), a speed reducer (12), a mounting plate (13), an external gear (14) and a rotary table bearing (15); the servo turntable motor (11) is coaxially connected with the speed reducer (12); the speed reducer (12) is fixedly connected with the box body (10) through a mounting plate (13); the speed reducer (12) is in key connection with an external gear (14), and the external gear (14) is meshed with the gear ring (9); the gear ring (9) is fixedly connected with the rotary table top (8); the rotary table surface (8) is of a hollow disc structure, is connected with the box body (10) through a rotary table bearing (15), and rotates around a fixed shaft relative to the box body (10); the chuck (7) is arranged on the rotary table surface (8), and the center of the chuck (7) is coaxial with the central hole of the rotary table surface (8); the box body (10) is fixedly connected in the concave cavity of the C-shaped machine body (6); an annular photoelectric encoder is arranged between the turntable surface (8) and the box body (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920070656.9U CN209888213U (en) | 2019-01-16 | 2019-01-16 | Screw servo press with randomly controllable screw pitch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920070656.9U CN209888213U (en) | 2019-01-16 | 2019-01-16 | Screw servo press with randomly controllable screw pitch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209888213U true CN209888213U (en) | 2020-01-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920070656.9U Expired - Fee Related CN209888213U (en) | 2019-01-16 | 2019-01-16 | Screw servo press with randomly controllable screw pitch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209888213U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109849398A (en) * | 2019-01-16 | 2019-06-07 | 陕西理工大学 | A kind of arbitrarily adjustable spiral servo press machine of screw pitch |
| CN112935046A (en) * | 2021-01-25 | 2021-06-11 | 东北林业大学 | Servo electronic press based on planet roller lead screw |
-
2019
- 2019-01-16 CN CN201920070656.9U patent/CN209888213U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109849398A (en) * | 2019-01-16 | 2019-06-07 | 陕西理工大学 | A kind of arbitrarily adjustable spiral servo press machine of screw pitch |
| CN112935046A (en) * | 2021-01-25 | 2021-06-11 | 东北林业大学 | Servo electronic press based on planet roller lead screw |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200103 |
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| CF01 | Termination of patent right due to non-payment of annual fee |