CN216028160U

CN216028160U - Transmission structure for driving tool rest and numerical control tool rest

Info

Publication number: CN216028160U
Application number: CN202122327382.7U
Authority: CN
Inventors: 王一帆; 陈新强; 王迪; 王钦云
Original assignee: Wenling Wenchang Cnc Machine Tool Equipment Co ltd
Current assignee: Wenling Wenchang Cnc Machine Tool Equipment Co ltd
Priority date: 2021-09-24
Filing date: 2021-09-24
Publication date: 2022-03-15
Anticipated expiration: 2031-09-24

Abstract

The application discloses a transmission structure for driving a tool rest and a numerical control tool rest, which comprise a base, a rotating shaft, an eccentric part, a gear ring and a cover plate, wherein the base is provided with a rotating groove, the rotating shaft is rotationally connected with the rotating groove, and the rotating shaft is used for connecting a driving source to drive the rotating shaft to rotate; the eccentric part is arranged on the rotating shaft, a first bearing is sleeved on the eccentric part, and a first bearing is sleeved on the gear; the cover plate is positioned on one side of the gear, which is far away from the base, a plurality of fixing bolts are arranged in the cover plate in a penetrating manner, the fixing bolts are connected to the base in a threaded manner, and the cover plate is installed on the base through the fixing bolts; the gear is provided with a yielding hole for the fixing bolt to pass through, and a gap for the gear to swing is reserved between the yielding hole and the fixing bolt; the gear ring is sleeved on the outer ring of the gear for meshing the gear, and the gear ring is used for mounting the mounting frame; when the rotating shaft rotates to drive the gear to swing, the gear swings to drive the gear ring to rotate. The rotating shaft, the eccentric part, the gear ring and the cover plate are arranged, so that the installation adaptability of the numerical control tool rest is stronger.

Description

Transmission structure for driving tool rest and numerical control tool rest

Technical Field

The application relates to the field of numerical control tool rests, in particular to a transmission structure for driving a tool rest and a numerical control tool rest.

Background

The numerically controlled lathe carriage is one of the most common auxiliary devices for numerically controlled lathes, and can complete several machining steps in once clamping workpiece for short machining period.

The driving structure of the existing numerical control tool rest basically adopts a structure of a worm gear and a worm, the speed reduction is realized through the worm gear and the worm, a driving source rotates through the driving worm to drive the worm gear to rotate, and then the mounting frame is driven to rotate relative to the base, so that the conversion of a tool is realized.

In view of the above-mentioned related technologies, due to the cooperation of the worm and gear structure, in practical production, the driving source is connected with the worm, the motor needs to be externally installed on the sidewall of the base, and in some occasions where the installation structure is relatively limited, the installation of the numerical control tool rest is relatively troublesome due to the fact that the driving source is located on the peripheral wall of the base, so that it is very urgent to develop a speed reduction structure for preventing the driving source from protruding out of the peripheral wall of the base.

SUMMERY OF THE UTILITY MODEL

In order to improve the condition of the outstanding base periphery wall of motor, this application provides a transmission structure and numerical control knife rest for the knife rest drive.

The application provides a pair of transmission structure is used in knife rest drive adopts following technical scheme:

a transmission structure for driving a tool rest and a numerical control tool rest comprise a base, a rotating shaft, an eccentric part, a gear ring and a cover plate, wherein the base is provided with a rotating groove, the rotating shaft is rotatably connected with the rotating groove, and the rotating shaft is used for connecting a driving source to drive the rotating shaft to rotate; the eccentric part is arranged on the rotating shaft, a first bearing is sleeved on the eccentric part, and the first bearing is sleeved with the gear; the cover plate is positioned on one side of the gear, which is far away from the base, a plurality of fixing bolts penetrate through the cover plate, the fixing bolts are in threaded connection with the base, and the cover plate is installed on the base through the fixing bolts; the gear is provided with a yielding hole for the fixing bolt to pass through, and a gap for the gear to swing is reserved between the yielding hole and the fixing bolt;

the gear ring is rotationally connected to the base, the gear ring is sleeved on the outer ring of the gear for meshing with the gear, and the gear ring is used for mounting the mounting rack;

when the rotating shaft rotates to drive the gear to swing, the gear swings to drive the gear ring to rotate.

Through above-mentioned technical scheme, the driving source drive pivot is rotated, and the pivot is rotated and to be driven the gear swing and then make the ring gear rotate, and mounting bracket mount pad ring gear and circumference are fixed, so the ring gear rotates and drives the mounting bracket and rotate and realize the cutter tool changing. When the transmission structure is adopted to drive the mounting frame to rotate, the driving source can be installed on the end face of the cover plate far away from the base, so that the situation that the driving source protrudes out of the outer peripheral wall of the base is avoided, and the installation adaptability of the numerical control tool rest is stronger.

Optionally, a thrust bearing is arranged between the cover plate and the gear ring.

Through the technical scheme, the bearing is carried through the thrust bearing, so that the relative rotation between the cover plate and the gear ring is more stable and durable.

Optionally, a plurality of bearings II are arranged in the rotary groove, and the rotary shaft is rotatably connected to the rotary groove through the bearings II.

Through above-mentioned technical scheme, set up bearing two, the rotation of pivot is supported through a plurality of bearings two for the rotation of pivot is more stable.

Optionally, the depth of the rotating shaft inserted into the rotating groove is greater than 30 mm.

Through above-mentioned technical scheme, pivot depth of insertion control is more than 30mm, ensures sufficient rotational cooperation volume, and then makes the rotation of pivot more stable lasting.

Optionally, the groove bottom of the rotating groove is provided with a yielding groove, and the yielding groove is used for providing a rotating shaft installation yielding space.

Through the technical scheme, the yielding groove is arranged and provides a certain fault-tolerant space, so that the rotating shaft is more flexible and convenient to install.

Optionally, the eccentric portions are axially distributed with at least two eccentric portions, the axis of each eccentric portion is circumferentially and uniformly distributed around the axis of the rotating shaft, and the gears are arranged in the same number and in one-to-one correspondence with the eccentric portions.

Through above-mentioned technical scheme, the axis of eccentric portion is evenly distributed around the axis circumference of pivot to when making the pivot rotate to drive the gear swing, the radial atress of pivot is more steady, makes holistic life more lasting.

Optionally, the fixing bolt sleeve is provided with an anti-abrasion ring, and the anti-abrasion ring is located in the yielding hole.

Through above-mentioned technical scheme, set up the abrasionproof ring, when the gear swing, reduced the hole inner wall of stepping down and the condition that fixing bolt takes place sliding wear for holistic use is more lasting stable.

Optionally, the abdicating hole is a round hole, and the anti-abrasion ring is annular.

Through above-mentioned technical scheme, rotate at the gear swing in-process through the abrasionproof ring, further reduced the hole of stepping down of gear and the condition of fixing bolt wearing and tearing.

The application also provides a numerical control tool rest, which comprises any one of the tool rest driving transmission structure.

Through above-mentioned technical scheme, drive through the application knife rest for the drive source of knife rest is put on, has avoided the outstanding base lateral wall's of drive source the condition, and then makes the installation of knife rest more convenient.

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

(1) by arranging the rotating shaft, the eccentric part, the gear ring and the cover plate, the driving source can be arranged on the end face, far away from the base, of the cover plate, so that the situation that the driving source protrudes out of the outer peripheral wall of the base is avoided, and the installation adaptability of the numerical control tool rest is further enhanced;

(2) the thrust bearing is arranged, so that the relative rotation between the cover plate and the gear ring is more stable and durable;

(3) through setting up the abrasionproof ring, reduced and let the hole inner wall and the condition that fixing bolt took place sliding wear for holistic use is more lasting stable.

Drawings

FIG. 1 is a schematic sectional view of a transmission structure for driving a tool holder according to an embodiment;

FIG. 2 is a schematic structural view of a rotating shaft and an eccentric portion of the embodiment;

FIG. 3 is a schematic partial explosion view of an embodiment;

FIG. 4 is a schematic structural diagram of the numerically controlled tool holder according to the embodiment.

Reference numerals: 1. a base; 11. rotating the groove; 12. a yielding groove; 2. a rotating shaft; 3. an eccentric portion; 4. a gear; 41. a hole of abdication; 5. a ring gear; 51. mounting grooves; 6. a cover plate; 61. a convex column; 7. a second bearing; 8. a first bearing; 9. fixing the bolt; 10. an anti-abrasion ring; 13. a third bearing; 14. a limiting part; 15. a thrust bearing; 16. a mounting frame; 17. a drive source; 18. a cover body.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses transmission structure for driving a tool rest, and referring to fig. 1, the transmission structure comprises a base 1, a rotating shaft 2, an eccentric part 3, a gear 4, a gear ring 5 and a cover plate 6.

Referring to fig. 1 and 2, the upper end surface of the base 1 is provided with a rotary groove 11, the rotary groove 11 is a cylindrical groove, and the groove depth of the rotary groove 11 is greater than 30 mm. The rotating groove 11 is internally provided with a plurality of second bearings 7, the plurality of second bearings 7 are sequentially distributed along the axis direction of the rotating groove 11, and the axes of the plurality of second bearings 7 are superposed with the axis of the rotating groove 11. The rotating shaft 2 is inserted into the inner ring of the second bearing 7, and the rotating shaft 2 rotates relative to the rotating groove 11 through the second bearings 7. The depth of the rotating shaft 2 inserted into the rotating groove 11 is larger than 30mm, the groove bottom of the rotating groove 11 is provided with a yielding groove 12, the yielding groove 12 is a cylindrical groove, and the axis of the yielding groove 12 coincides with the rotating groove 11. The diameter of the abdicating groove 12 is larger than that of the rotating shaft 2, thereby leaving a space for abdicating the rotating shaft 2. The shaft hole has been seted up to the one end that the commentaries on classics groove 11 is kept away from to pivot 2, and the shaft hole mainly used supplies the output shaft embedding of driving source 17 to realize connecting. In actual operation, the driving source 17 and the rotating shaft 2 can be connected through a coupling.

The eccentric portion 3 is located the top of base 1, and eccentric portion 3 is cylindrical setting, and eccentric portion 3 is fixed in pivot 2. The eccentric portion 3 is provided with at least two, and each eccentric portion 3 is along the axial distribution of pivot 2, and each eccentric portion 3 diameter is the same, and the axis of each eccentric portion 3 is circumference evenly distributed round the axis of pivot 2. In the present embodiment, the state in which 2 eccentric portions 3 are provided is shown.

The periphery of each eccentric part 3 is also coaxially sleeved with a bearing I8. The gears 4 are in one-to-one correspondence with the eccentric portions 3 in the same number and positions. In this embodiment, two gears 4 are provided, the two gears 4 and the two eccentric portions 3 are arranged in a one-to-one correspondence manner, and each gear 4 is coaxially sleeved on a corresponding bearing 8.

Referring to fig. 1 and 3, the cover plate 6 is located on one side of the two gears 4 away from the base 1, and a convex column 61 is integrally protruded on the lower end surface of the cover plate 6, and the convex column 61 is cylindrical. A plurality of fixing bolts 9 are arranged on the cover plate 6 in a penetrating way. The fixing bolts 9 are circumferentially distributed around the axis of the boss 61. Each gear 4 is close to the one end of apron 6 and has all been seted up the hole of stepping down 41, and the hole of stepping down 41 supplies the fixing bolt 9 that corresponds to pass. During actual installation, the fixing bolt 9 passes through the cover plate 6 and the abdicating hole 41 and then is in threaded connection with the base 1, so that the cover plate 6 is fixed on the base 1. After the cover plate 6 is installed, the lower end of the cover plate 6 is not in embedded fit with the rotating shaft 2, so that the cover of the cover plate 6 is more convenient to install.

The abdicating hole 41 is a round hole, and the aperture of the abdicating hole 41 is larger than the diameter of the fixing bolt 9. Each fixing bolt 9 is sleeved with an anti-abrasion ring 10, and the anti-abrasion ring 10 is positioned in the yielding hole 41. The anti-abrasion ring 10 is made of bearing steel, and the anti-abrasion ring 10 is annular. The anti-abrasion ring 10 can rotate relative to the fixing bolt 9, and after the whole installation is finished, even if the anti-abrasion ring 10 is installed, a gap for the gear 4 to swing is reserved between the abdicating hole 41 and the fixing bolt 9.

One gear ring 5 is arranged, the gear ring 5 is rotatably connected to the base 1, and the rotation axis of the gear ring 5 is overlapped with the axis of the rotating shaft 2. In actual operation, the upper end of the base 1 is sleeved with a third bearing 13, the outer wall of the base 1 is provided with a limiting part 14, and the limiting part 14 is annular and abuts against the lower end face of the third bearing 13. The lower end surface of the gear ring 5 is coaxially provided with a mounting groove 51 for the bearing III 13 to be embedded in, and the gear ring 5 rotates relative to the base 1 through the bearing III 13.

The gear ring 5 is also sleeved on the outer rings of the two gears 4, and the inner teeth of the gear ring 5 are used for meshing with the gears 4. When the rotating shaft 2 rotates to drive the eccentric part 3 to rotate, the eccentric part 3 drives the first bearing 8 to rotate and swing, and at the moment, the first bearing 8 can drive the corresponding gear 4 to swing. When the gear 4 swings, the gear 4 drives the gear ring 5 to rotate in the swinging process.

A thrust bearing 15 is also arranged between the cover plate 6 and the gear ring 5, and the thrust bearing 15 is sleeved on the convex column 61 of the cover plate 6. The axial bearing 15 provides axial force support, reducing wear between the cover plate 6 and the ring gear 5.

The embodiment of the application also discloses a numerical control tool rest, which comprises the transmission structure for driving the tool rest, a mounting frame 16 and a driving source 17, and also comprises a reference numeral 1 and a reference numeral 4. The mounting frame 16 is used for mounting a cutter, the mounting frame 16 is sleeved on the gear ring 5, and the mounting frame 16 and the gear ring 5 are relatively fixed in the circumferential direction. During actual operation, the constant head tank has been seted up to ring gear 5 periphery, and mounting bracket 16 cup joints behind ring gear 5 and realizes the location of circumference through location portion embedding constant head tank to make ring gear 5's rotation can drive mounting bracket 16 and rotate. The driving source 17 is fixed at one end of the cover plate 6 far away from the base 1, an output shaft of the driving source 17 penetrates through the cover plate 6 and is connected with the rotating shaft 2, and the driving source 17 can be a driving motor or a hydraulic motor. In actual use, the cover plate 6 is further provided with a cover 18, and the cover 18 covers the driving source 17 to reduce the entry of chips between the driving source 17 and the cover plate 6.

The working principle of the embodiment is as follows:

when driving source 17 drives pivot 2 and rotates, pivot 2 rotates and drives eccentric portion 3 and rotate and make gear 4 swing, and gear 4 drives ring gear 5 at the wobbling in-process and rotates, and ring gear 5's rotation drives mounting bracket 16 and rotates, realizes the conversion of cutter on mounting bracket 16. Through setting up pivot 2, eccentric portion 3, gear 4, ring gear 5 and apron 6, the terminal surface that base 1 was kept away from at apron 6 can be installed to driving source 17 to avoided driving source 17 to stand out in the condition of 1 periphery wall of base, and then made the installation adaptability of numerical control knife rest stronger.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a knife rest drive is with transmission structure which characterized in that: the rotary table comprises a base (1), a rotating shaft (2), an eccentric part (3), a gear (4), a gear ring (5) and a cover plate (6), wherein the base (1) is provided with a rotating groove (11), the rotating shaft (2) is rotatably connected to the rotating groove (11), and the rotating shaft (2) is used for connecting a driving source (17) to drive the rotating shaft (2) to rotate; the eccentric part (3) is arranged on the rotating shaft (2), a first bearing (8) is sleeved on the eccentric part (3), and the first bearing (8) is sleeved on the gear (4); the cover plate (6) is positioned on one side, away from the base (1), of the gear (4), a plurality of fixing bolts (9) penetrate through the cover plate (6), the fixing bolts (9) are in threaded connection with the base (1), and the cover plate (6) is installed on the base (1) through the fixing bolts (9); the gear (4) is provided with a yielding hole (41) for the fixing bolt (9) to pass through, and a gap for the gear (4) to swing is reserved between the yielding hole (41) and the fixing bolt (9);

the gear ring (5) is rotatably connected to the base (1), the gear ring (5) is sleeved on the outer ring of the gear (4) and is meshed with the gear (4), and the gear ring (5) is used for mounting the mounting rack (16);

when the rotating shaft (2) rotates to drive the gear (4) to swing, the gear (4) swings to drive the gear ring (5) to rotate.

2. The transmission structure for driving a tool holder according to claim 1, wherein: and a thrust bearing (15) is arranged between the cover plate (6) and the gear ring (5).

3. The transmission structure for driving a tool holder according to claim 1, wherein: a plurality of second bearings (7) are arranged in the rotary groove (11), and the rotary shaft (2) is rotatably connected to the rotary groove (11) through the second bearings (7).

4. The transmission structure for driving a tool holder according to claim 3, wherein: the depth of the rotating shaft (2) inserted into the rotating groove (11) is more than 30 mm.

5. The transmission structure for driving a tool holder according to claim 3, wherein: the tank bottom of revolving groove (11) has seted up abdicating groove (12), abdicating groove (12) are used for providing pivot (2) installation abdicating space.

6. The transmission structure for driving a tool holder according to claim 1, wherein: eccentric portion (3) have at least two along pivot (2) axial distribution, and the axis of each eccentric portion (3) is circumference evenly distributed round the axis of pivot (2), gear (4) are the same and the position one-to-one setting with the quantity of eccentric portion (3).

7. The transmission structure for driving a tool holder according to claim 1, wherein: fixing bolt (9) cover is equipped with abrasionproof ring (10), abrasionproof ring (10) are located hole (41) of stepping down.

8. The transmission structure for driving a tool holder according to claim 7, wherein: the abdicating hole (41) is a round hole, and the anti-abrasion ring (10) is in a ring shape.

9. A numerically controlled tool holder, characterized by: comprising the transmission structure for driving the tool post according to any one of claims 1 to 8.