CN211490741U - Numerical control index plate - Google Patents

Abstract

The utility model relates to a precision equipment field, in particular to numerical control graduated disk. Be equipped with the gear train between servo motor and the two lead screw rods, shown two lead screw rod one end and gear train swing joint, the gear train drives two lead screw rod and rotates, but be equipped with round trip movement's adjusting device in the box and hold adjusting device's the chamber that holds, the adjusting device cover is established on the other end of two lead screw rods, adjusting device drives two lead screw rods and makes a round trip linear motion. The utility model discloses, through the worm bearing frame with hold the chamber, set up the thrust screw on my sweet bearing frame for the thrust screw contradicts to first circular slot bottom surface and forms thrust, makes the worm bearing frame remove holding the intracavity, because the worm bearing frame cover is established on the worm, thereby drives the worm and removes, has solved because live time is of a specified duration, and leads to the problem of the clearance increase between the tooth's socket on worm and the turbine.

Description

A numerically controlled indexing plate

【Technical field】

The utility model relates to the field of precision equipment, in particular to a numerical control indexing plate.

【Background technique】

At present, the CNC indexing plate is a machine tool accessory that clamps the workpiece on the chuck or between the two centers and rotates, indexes and positions it, and is widely used in milling machines, drilling machines and surface grinders; The dial usually includes a motor, a worm gear and a worm pair, and an indexing plate. The indexing plate and the worm wheel rotate at the same time, so the rotation angle of the worm wheel is the angle displayed by the indexing plate. When working, the motor is connected to the worm drive and drives the worm clockwise. Or counterclockwise, the worm gear and the worm are meshed with each other so that the worm gear rotates according to the set degree. In the prior art, since the worm gear and the worm are engaged with each other, wear will occur after a long time of use. Usually, the worm gear and the worm are replaced as a whole. After the worm gear and the worm are replaced, they need to be re-adjusted, which seriously affects the production efficiency. .

【Content of utility model】

The purpose of the utility model is to provide a numerical control indexing plate that can adjust the position of the worm gear and worm without the need for integral replacement of the worm gear and worm, aiming at the defects and deficiencies of the prior art.

For the above-mentioned problems, the utility model adopts the following technical solutions:

A numerical control indexing plate includes a box body, wherein a double-lead screw and a double-lead worm gear are arranged in the box, the double-lead screw and the double-lead worm gear are engaged with each other, and the double-lead worm wheel is sleeved There is a main shaft, the free end of the main shaft is installed with a worktable, one side of the box body is provided with a servo motor, and the lower side of the double-lead worm gear is provided with a brake pad. A gear set is arranged between the servo motor and the double-lead screw. One end of the double-lead screw is movably connected to the gear set. The gear set drives the double-lead screw to rotate. The adjusting device and the accommodating cavity for accommodating the adjusting device, the adjusting device is sleeved on the other end of the double-lead screw, and the adjusting device drives the double-lead screw to move linearly back and forth.

Preferably, the gear set includes a driving gear and a driven gear, the driving gear is connected with the rotating shaft of the servo motor, the driving gear is meshed with the driven gear, the driven gear is provided with a socket, the The socket is provided with tooth slots along the circumferential direction of the socket, and one end of the double-lead screw is provided with teeth matched with the tooth slots.

Preferably, the accommodating cavity includes a first circular groove and a second circular groove, the bottom surface of the first circular groove is provided with a plurality of threaded holes, and the threaded holes are uniformly arranged along the circumferential direction of the first circular groove.

Preferably, the adjusting device includes a worm bearing seat and a bearing group arranged in the worm bearing seat, the bearing group is sleeved in the other end of the double-lead screw, and the worm bearing seat is provided with a threaded hole corresponding to the threaded hole. For matching bolts, there are thrust screws that interfere with the bottom surface of the first circular groove between two adjacent bolts.

Preferably, the worm bearing seat includes a first collar and a second collar, the first collar and the second collar are an integrated structure, the bolt is mounted on the first collar, the double guide The other end of the process screw is inserted into the first collar.

Preferably, the other end of the double-lead screw is provided with an interference ring that interferes with the bearing group.

Preferably, the bearing set includes a first needle roller bearing, a second needle roller bearing and a third needle roller bearing, and the third needle roller bearing is in conflict with the ground ring.

Preferably, a locking nut is further provided on the other end of the double-lead screw, and the locking nut and the first needle bearing are in mutual conflict.

Preferably, the double-lead screw is also provided with a turning needle bearing.

The beneficial effects of the numerical control indexing plate of the utility model are as follows:

In the utility model, through the worm bearing seat and the accommodating cavity, a thrust screw is arranged on the worm bearing seat, so that the thrust screw collides with the bottom surface of the first circular groove to form a thrust, so that the worm bearing seat moves in the accommodating cavity, because the worm bearing seat sleeve It is arranged on the worm, thereby driving the worm to move, solving the problem that the gap between the worm and the tooth slot on the turbine increases due to long use.

The concept, specific structure and effects of the present utility model will be further described below in conjunction with the accompanying drawings, so as to fully understand the purpose, features and effects of the present utility model.

【Description of drawings】

Fig. 1 is the perspective view of the utility model;

Fig. 2 is the sectional view of Fig. 1-C direction;

Fig. 3 is the sectional view of Fig. 9-A direction;

Fig. 4 is a sectional view in the direction of Fig. 9-B;

Fig. 5 is the sectional view of Fig. 4-D direction;

Figure 6 is a schematic diagram of a worm bearing seat;

Figure 7 is a cross-sectional view of a worm bearing seat;

Figure 8 is a cross-sectional view of the box;

Fig. 9 is the left side view of the utility model;

Box 1; double lead screw 11; teeth 111; contact ring 112; lock nut 113; double lead worm gear 12; workbench 13; servo motor 14; brake pad 15; Driven gear 22; socket 221; tooth slot 2211; worm bearing seat 31; thrust screw 32; first collar 33; second collar 34; Threaded hole 421; Bolt 422; First needle bearing 51; Second needle bearing 52; Third needle bearing 53;

【Detailed ways】

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by "center", "upper", "lower", "front", "rear", "left" and "right" in the terms is Based on the orientation or positional relationship shown in the drawings, it 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, be constructed and operated in a specific orientation, and therefore cannot It is understood as a limitation of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it may be a fixed connection or a disassembly Connection, or integral connection; may be mechanical connection or electrical connection; may be direct connection or indirect connection through an intermediate medium, and may be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations. In addition, in the description of the present invention, unless otherwise specified, the meanings of "plurality" and "several" are two or more.

Please refer to Fig. 1 to Fig. 5, what Fig. 1 to Fig. 5 discloses is the best embodiment of a kind of numerical control indexing plate:

A numerically controlled indexing plate, comprising a box body 1, a double-lead screw 11 and a double-lead worm wheel 12 are arranged in the box body 1, and the double-lead screw 11 and the double-lead worm wheel 12 are engaged with each other, and the The double-lead worm gear 12 is sleeved with a main shaft, the free end of the main shaft is provided with a worktable 13, one side of the box body 1 is provided with a servo motor 14, and the lower side of the double-lead worm gear 12 is provided with a brake pad 15. A gear set 2 is arranged between the servo motor 14 and the double-lead screw 11 . One end of the double-lead screw 11 is movably connected with the gear set 2 , and the gear set 2 drives the double-lead screw 11 to rotate. In this embodiment, the gear set 2 includes a driving gear 21 and a driven gear 22 , the driving gear 21 is connected to the rotating shaft of the servo motor 14 , the driving gear 21 is meshed with the driven gear 22 , and the driven gear 21 is engaged with the driven gear 22 . The gear 22 is provided with an insertion hole 221 , and the insertion hole 221 is provided with a tooth slot 2211 along the circumferential direction of the insertion hole 221 . When in use, teeth 111 are provided at either end of both ends of the double-lead screw 11, and this end is matched with the tooth slots 2211 in the socket 221. Since the teeth 111 mesh with the tooth slots 2211, the driving gear 21 rotates, thereby The double-lead screw 11 is driven to rotate. When the double-lead screw 11 moves, the teeth 111 move in the tooth slot 2211 along with the movement of the double-lead screw 11 .

Specifically, the box body 1 is provided with an adjusting device 3 that can move back and forth and a accommodating cavity 4 for accommodating the adjusting device 3 . The adjusting device 3 is sleeved on the other end of the double-lead screw 11 . The adjusting device 3. Drive the double-lead screw 11 to move back and forth linearly. The best implementation of this embodiment is: the accommodating cavity 4 includes a first circular groove 41 and a second circular groove 42 , the bottom surface of the first circular groove 41 is provided with a number of threaded holes 421 , and this embodiment is provided with a total of Six threaded holes 421 are arranged evenly along the circumferential direction of the first circular groove 41 .

More specifically, the adjusting device 3 includes a worm bearing seat 31 and a bearing group arranged in the worm bearing seat 31 , and the bearing group is sleeved in the other end of the double lead screw 11 . The worm bearing seat 31 is provided with bolts 422 that match with the threaded holes 421 , and thrust screws 32 that interfere with the bottom surface of the first circular groove 41 are provided between two adjacent bolts 422 . In this embodiment, the worm bearing seat 31 includes a first collar 33 and a second collar 34, the first collar 33 and the second collar 34 are an integrated structure, and the bolts 422 are installed on the first collar 33 and the second collar 34. On the collar 33 , the other end of the double-lead screw 11 is inserted into the second collar 34 . In use, after the adjustment of the thrust screw 32 is completed, the bolt 422 is rotated. Since the thrust screw 32 and the bottom surface of the first circular groove 41 collide with each other, the bolt 422 and the thrust screw 32 form a self-locking force, so that the worm bearing seat 31 is fixed.

More specifically, the other end of the double-lead screw 11 is provided with an interference ring that interferes with the bearing group.

More specifically, the bearing set includes: a first needle bearing 51 , a second needle bearing 52 and a third needle bearing 53 , and the third needle bearing 53 interferes with the contact ring. The other end of the double-lead screw 11 is also provided with a locking nut 113 , and the locking nut 113 and the first needle bearing 51 interfere with each other. Since the lock nut 113 and the contact ring rotate with the rotation of the double-lead worm, the lock nut 113 and the first needle bearing 51 interfere with each other, and the third needle bearing 53 and the contact ring interfere with each other, so that the locking The nut 113 and the contact ring do not rub against the worm bearing seat 31, so that the rotation is better. Since the worm bearing seat 31 does not rotate, a second needle bearing 52 is provided in the second collar 34, and the second needle bearing 52 is sleeved on the other end of the double-lead worm, so that the The double lead worm can rotate within the second collar 34 .

The double-lead screw 11 is also provided with a turning-type needle bearing 6 , so that the double-lead worm rotates in the casing 1 .

The working principle of the utility model is:

When the gap between the double-lead worm and the worm gear becomes larger and affects the accuracy, if you want to move the double-lead worm as a whole to the right, by twisting the bolt 422, the bolt 422 is slowly twisted into the threaded hole 421, and the bolt 422 drives the The worm bearing seat 31 moves to the right as a whole. Since the other end of the double lead worm is connected to the worm bearing seat 31, the double lead worm moves to the right, thereby reducing the gap between the double lead worm and the worm wheel. When the adjustment is completed Then, twist the thrust screw 32 so that the thrust screw 32 and the bottom surface of the first circular groove 41 collide with each other, so that the bolt 422 and the thrust screw 32 form a self-locking force, thereby fixing the worm bearing seat 31 .

The preferred embodiments of the present utility model are shown in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. Rather, these embodiments are provided so that a thorough and complete understanding of the present disclosure is provided.

Claims (9)

1. The utility model provides a numerical control graduated disk, includes box (1), be equipped with two lead screw rod (11) and two lead worm wheel (12) in box (1), two lead screw rod (11) and two lead worm wheel (12) intermeshing, two lead worm wheel (12) cover are equipped with the main shaft, workstation (13) are installed to the free end of main shaft, one side of box (1) is equipped with servo motor (14), two lead worm wheel (12) downside is equipped with braking piece (15), its characterized in that: be equipped with gear train (2) between servo motor (14) and two lead screw rod (11), shown two helical pitch screw rod (11) one end and gear train (2) swing joint, gear train (2) drive two lead screw rod (11) and rotate, be equipped with adjusting device (3) that can round trip movement in box (1) and hold chamber (4) that hold that holds adjusting device, the adjusting device cover is established on the other end of two lead screw rod (11), adjusting device (3) drive two helical pitch screw rod (11) and make round trip linear motion.

2. A numerically controlled indexing plate according to claim 1, wherein: gear train (2) are including driving gear (21) and driven gear (22), driving gear (21) are connected with the pivot of servo motor (14), driving gear (21) are connected with driven gear (22) meshing, be equipped with jack (221) on driven gear (22), be equipped with in jack (221) along jack (221) circumferencial direction's tooth's socket (2211), one of two helical pitch screw rods (11) is served and is equipped with tooth (111) with tooth's socket (2211) assorted.

3. A numerically controlled indexing plate according to claim 1, wherein: the accommodating cavity (4) comprises a first circular groove (41) and a second circular groove (42), a plurality of threaded holes (421) are formed in the bottom surface of the first circular groove (41), and the threaded holes (421) are evenly arranged along the circumferential direction of the first circular groove (41).

4. A numerically controlled indexing plate according to claim 3, wherein: adjusting device (3) include worm bearing seat (31) and set up the bearing group in worm bearing seat (31), the bearing group cover is established in the other end of two lead screw rod (11), be equipped with on worm bearing seat (31) with screw hole (421) assorted bolt (422), be equipped with between two liang of adjacent bolt (422) with first circular slot (41) bottom surface thrust screw (32) of contradicting each other.

5. A numerically controlled indexing plate according to claim 4, wherein: the worm bearing seat (31) comprises a first collar (33) and a second collar (34), the first collar (33) and the second collar (34) are of an integrated structure, the bolt (422) is installed on the first collar (33), and the other end of the double-lead screw (11) is inserted into the second collar (34).

6. A numerically controlled indexing plate according to claim 4, wherein: and the other end of the double-lead screw (11) is provided with a contact ring (112) which is mutually abutted against the bearing group.

7. A numerically controlled indexing plate according to claim 6, wherein: the bearing set comprises a first needle bearing (51), a second needle bearing (52) and a third needle bearing (53), and the third needle bearing (53) is abutted to the abutting ring (112).

8. A numerically controlled indexing plate according to claim 7, wherein: and the other end of the double-lead screw (11) is also provided with a locking nut (113), and the locking nut (113) is mutually abutted against the first needle bearing (51).

9. A numerically controlled indexing plate according to claim 1, wherein: and a turning needle bearing (6) is also arranged on the double-lead screw (11).

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