CN219212419U

CN219212419U - Main shaft indexing structure driven by synchronous belt

Info

Publication number: CN219212419U
Application number: CN202320393578.2U
Authority: CN
Inventors: 夏刚
Original assignee: Guangzhou Xinzhao Zhikong Precision Manufacturing Co ltd
Current assignee: Guangzhou Xinzhao Zhikong Precision Manufacturing Co ltd
Priority date: 2023-03-06
Filing date: 2023-03-06
Publication date: 2023-06-20
Anticipated expiration: 2033-03-06

Abstract

The utility model discloses a main shaft indexing structure of synchronous belt transmission, which comprises a mounting seat and a fixing seat, wherein the top of the front end of the mounting seat is fixedly connected with the fixing seat, a transmission shaft is arranged in the fixing seat, a main shaft box is arranged on the left side of the mounting seat, a bearing seat is fixedly connected in the main shaft box, an output main shaft is assembled in the bearing seat, and a passive synchronous wheel is fixedly sleeved at the bottom end of the outer part of the output main shaft. According to the main shaft indexing structure driven by the synchronous belt, the eight-square indexing ring, the clamping plate fingers, the air cylinder and the clamping jaw are arranged, when the main shaft is required to be indexed, the servo motor drives the main shaft to rotate to an angle, the finger air cylinder rapidly clamps the eight-square indexing ring, so that even if the transmission belt of the servo motor is slightly deviated, the main shaft can be accurately indexed under the clamping of the finger air cylinder, the repeated indexing precision is high, and the problem that the main shaft cannot meet the requirements when the main shaft is required to be accurately indexed and rigidly kept to be positioned is solved.

Description

Main shaft indexing structure driven by synchronous belt

Technical Field

The utility model relates to the technical field of spindle indexing, in particular to a spindle indexing structure driven by a synchronous belt.

Background

The traditional mechanical main shaft of the synchronous belt of the servo motor transmits torque by the synchronous belt and the upper teeth of the synchronous wheel, and has the characteristic of accurate transmission proportion. The tension of the common synchronous belt is not adjusted too tightly so as to prevent the rapid wear and fatigue fracture.

However, when the actual main shaft needs accurate indexing, due to the requirement of high speed of synchronous belt transmission on the main shaft, the synchronous belt transmission of the servo motor often has a little deviation, so that the accurate indexing cannot be realized, and the rigidity of the indexing main shaft cannot be kept and positioned to meet the requirement.

In view of the above, we propose a synchronous belt driven main shaft indexing structure, which can make the main shaft achieve accurate indexing when the main shaft needs indexing, and meet the requirement of rigidity maintenance and positioning.

Disclosure of Invention

The utility model aims to provide a main shaft indexing structure driven by a synchronous belt, which solves the problems that the precision indexing cannot be realized and the rigidity of an indexing main shaft can not be kept and positioned as required in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a hold-in range driven main shaft indexing structure, includes mount pad and fixing base, the front end top fixedly connected with fixing base of mount pad, fixing base internally mounted has the transmission shaft, the mount pad left side is provided with the headstock, the inside fixedly connected with bearing frame of headstock, the bearing frame inside is equipped with output spindle, the outside bottom mounting of output spindle has cup jointed passive synchronizing wheel, the fixed octagon graduation ring that has cup jointed in passive synchronizing wheel top, octagon graduation ring both sides are provided with splint respectively, the headstock top is installed the finger cylinder, the output of finger cylinder is provided with the clamping jaw.

Preferably, the clamping jaws are provided with two groups and are respectively positioned at two sides outside the output main shaft, and the clamping jaws are respectively fixedly connected with the clamping plates.

Preferably, the outside of transmission shaft is fixed to be cup jointed initiative synchronizing wheel, servo motor is installed to the bottom of mount pad, servo motor and transmission shaft fixed connection.

Preferably, the fixing holes are formed in four corners of the fixing base, fixing bolts are arranged in the fixing holes, and the fixing base and the mounting base are fixedly assembled through the fixing bolts.

Preferably, the front end of the mounting seat is provided with a fixing plate, an adjusting nut is arranged at the fixing plate, and the adjusting nut is fixedly connected with the fixing seat.

Preferably, the bottom end of the output main shaft and the bottom end of the transmission shaft are both provided with transmission belts, and the transmission shafts and the output main shaft transmit torque through the transmission belts.

Compared with the prior art, the utility model has the beneficial effects that: the main shaft indexing structure of the synchronous belt transmission not only realizes accurate indexing of the output main shaft even if the transmission belt of the servo motor has slight deviation, high repeated indexing precision, small interference, higher transmission stability, compact structure, small volume and more convenient whole assembly, but also realizes the adjustment of the tension of the transmission belt, so that the tension is not too tight, a certain reciprocating clearance exists, and fatigue fracture caused by too fast abrasion is prevented;

through being provided with the eight-square indexing ring, clamping plate fingers, an air cylinder and clamping jaws, when the output main shaft needs to be indexed, the rotation of the output main shaft is driven by the servo motor to reach an angle, the finger air cylinder rapidly clamps the eight-square indexing ring to fix the output main shaft and keep rigid positioning, so that even if the transmission belt of the servo motor has slight deviation, the output main shaft can be accurately indexed under the clamping of the finger air cylinder, and the repeated indexing precision is high;

the servo motor, the output main shaft, the transmission shaft, the driving synchronous wheel, the driven synchronous wheel and the transmission belt are arranged, the output end of the servo motor drives the transmission shaft to rotate, the transmission belt is arranged outside the transmission shaft and the output main shaft to output and transmit torque, the transmission belt is hidden at the bottom of the mounting seat and cannot be interfered by the outside, the maintenance frequency is reduced, the transmission stability is higher, the structure is compact, the volume is small, and the whole assembly is more convenient;

through being provided with fixing bolt, fixed orifices, adjusting nut, fixed plate, fixing base, the transmission shaft uses solitary fixing base to assemble in the mount pad top to use adjusting nut to adjust the assembly position of fixing base, make the fixing base slightly adjust the removal around through twisting adjusting nut, adjust the tension of drive belt, make tension can not be too tight, there is certain clearance that comes and goes, prevent the fatigue fracture that the wearing and tearing caused too fast, rigidity keeps the location when guaranteeing output main shaft needs accurate graduation, the adjustability is strong, the assembly is simple.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic top view of the present utility model;

FIG. 3 is an enlarged partial cross-sectional view of the structure of FIG. 1A according to the present utility model;

fig. 4 is a schematic top view of the finger cylinder of the present utility model.

In the figure: 1. an output spindle; 2. a spindle box; 3. a bearing seat; 4. a mounting base; 5. a transmission belt; 6. a fixing bolt; 7. a fixing hole; 8. a servo motor; 9. an adjusting nut; 10. a fixing plate; 11. a fixing seat; 12. a transmission shaft; 13. a driving synchronizing wheel; 14. a passive synchronizing wheel; 15. an octagon indexing ring; 16. a clamping plate; 17. a finger cylinder; 18. clamping jaw.

Description of the embodiments

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1: referring to fig. 1-4, a synchronous belt driven spindle indexing structure comprises a mounting seat 4 and a fixing seat 11, wherein the top of the front end of the mounting seat 4 is fixedly connected with the fixing seat 11, a transmission shaft 12 is arranged in the fixing seat 11, a spindle box 2 is arranged on the left side of the mounting seat 4, a bearing seat 3 is fixedly connected in the spindle box 2, an output spindle 1 is assembled in the bearing seat 3, a driven synchronous wheel 14 is fixedly sleeved at the bottom end outside the output spindle 1, an octagon indexing ring 15 is fixedly sleeved above the driven synchronous wheel 14, clamping plates 16 are respectively arranged on two sides of the octagon indexing ring 15, a finger cylinder 17 is arranged at the top of the spindle box 2, clamping jaws 18 are arranged at two groups and are respectively positioned on two sides outside the output spindle 1, and the clamping jaws 18 are respectively fixedly connected with the clamping plates 16;

specifically, as shown in fig. 1, 2, 3 and 4, a finger cylinder 17 is additionally installed on the output spindle 1, and meanwhile, a high-precision eight-direction indexing ring 15 is installed outside the output spindle 1, when the output spindle 1 needs to be indexed, the rotation of the output spindle 1 to an angle is driven by a servo motor 8, the finger cylinder 17 drives a clamping jaw 18 to clamp, and a clamping plate 16 fixed with the clamping jaw drives the clamping jaw to clamp the eight-direction indexing ring 15 fast, so that the output spindle 1 is fixed, and keeps rigid positioning, so that even if the transmission belt 5 of the servo motor 8 has slight deviation, the output spindle 1 can be accurately indexed under the clamping of the finger cylinder 17, and the indexing precision is high.

Example 2: the outside of the transmission shaft 12 is fixedly sleeved with an active synchronous wheel 13, the bottom end of the mounting seat 4 is provided with a servo motor 8, the servo motor 8 is fixedly connected with the transmission shaft 12, the bottom ends of the output main shaft 1 and the transmission shaft 12 are respectively provided with a transmission belt 5, and the transmission shafts 12 and the output main shaft 1 transmit torque through the transmission belts 5;

specifically, as shown in fig. 1, fig. 2 and fig. 3, the structure adopts a driving and transmission separated transmission mode, the output end of the servo motor 8 drives the transmission shaft 12 to rotate, the transmission shaft 12 and the outside of the output main shaft 1 are provided with the transmission belt 5 to output and transmit torque, and the transmission belt 5 is hidden at the bottom of the mounting seat 4 and cannot be interfered by the outside, so that the maintenance frequency is reduced, the transmission stability is higher, the structure is compact, the size is small, and the whole assembly is more convenient.

Example 3: fixing holes 7 are formed in four corners of the fixing seat 11, fixing bolts 6 are arranged in the fixing holes 7, the fixing seat 11 and the mounting seat 4 are fixedly assembled through the fixing bolts 6, a fixing plate 10 is mounted at the front end of the mounting seat 4, an adjusting nut 9 is mounted at the fixing plate 10, and the adjusting nut 9 is fixedly connected with the fixing seat 11;

specifically, as shown in fig. 1, 2 and 3, the transmission shaft 12 is assembled at the top end of the mounting seat 4 by using an independent fixing seat 11, the assembling position of the fixing seat 11 is adjusted by using an adjusting nut 9, the fixing seat 11 is slightly adjusted and moved forward and backward by screwing the adjusting nut 9, then the four groups of fixing bolts 6 are fixed in the fixing holes 7, and the assembling position of the transmission shaft 12 can be adjusted, so that the tension of the transmission belt 5 is adjusted, the tension is not too tight, fatigue fracture caused by too fast abrasion is prevented, the rigidity is ensured to be kept to be positioned when the output main shaft 1 needs accurate indexing, the adjustability is strong, and the assembly is simple.

Working principle: when the utility model is used, the transmission shaft 12 is assembled at the top end of the mounting seat 4 by using an independent fixing seat 11, the assembling position of the fixing seat 11 is adjusted by using an adjusting nut 9, the fixing seat 11 is slightly adjusted to move back and forth by screwing the adjusting nut 9, then the assembling position of the transmission shaft 12 can be adjusted by fixing four groups of fixing bolts 6 in the fixing holes 7, so that the tension of the transmission belt 5 is adjusted, the structure adopts a driving and transmission separated transmission mode, the output end of the servo motor 8 drives the transmission shaft 12 to rotate, the transmission belt 5 is arranged outside the transmission shaft 12 and the output main shaft 1 to output and transmit torque, a finger cylinder 17 is additionally arranged on the output main shaft 1, meanwhile, a high-precision octagon indexing ring 15 is arranged outside the output main shaft 1, when the output main shaft 1 is required to be indexed, the servo motor 8 drives the rotation to reach an angle, the finger cylinder 17 drives a clamping jaw 18 to clamp, and a clamping plate 16 fixed with the octagon ring 15 can rapidly clamp the output main shaft 1, so that the output main shaft 1 can keep rigid positioning, and even if the transmission belt 5 of the servo motor has slight deviation, the finger indexing ring 17 can be accurately clamped under the indexing of the output main shaft 1.

Claims

1. The utility model provides a hold-in range driven main shaft indexing structure, includes mount pad (4) and fixing base (11), its characterized in that: front end top fixedly connected with fixing base (11) of mount pad (4), fixing base (11) internally mounted has transmission shaft (12), mount pad (4) left side is provided with headstock (2), headstock (2) inside fixedly connected with bearing frame (3), bearing frame (3) inside are equipped with output main shaft (1), output main shaft (1) outside bottom fixed has cup jointed passive synchronizing wheel (14), passive synchronizing wheel (14) top has fixedly cup jointed octagon graduation ring (15), octagon graduation ring (15) both sides are provided with splint (16) respectively, finger cylinder (17) are installed at headstock (2) top, the output of finger cylinder (17) is provided with clamping jaw (18).

2. The timing belt driven spindle indexing structure of claim 1, wherein: the clamping jaws (18) are provided with two groups and are respectively positioned at two sides outside the output main shaft (1), and the clamping jaws (18) are respectively and fixedly connected with the clamping plates (16).

3. The timing belt driven spindle indexing structure of claim 1, wherein: the outside of transmission shaft (12) is fixed to be cup jointed initiative synchronizing wheel (13), servo motor (8) are installed to the bottom of mount pad (4), servo motor (8) and transmission shaft (12) fixed connection.

4. The timing belt driven spindle indexing structure of claim 1, wherein: fixing holes (7) are formed in four corners of the fixing seat (11), fixing bolts (6) are arranged in the fixing holes (7), and the fixing seat (11) and the mounting seat (4) are fixedly assembled through the fixing bolts (6).

5. The timing belt driven spindle indexing structure of claim 1, wherein: the front end of the mounting seat (4) is provided with a fixing plate (10), an adjusting nut (9) is arranged at the fixing plate (10), and the adjusting nut (9) is fixedly connected with the fixing seat (11).

6. The timing belt driven spindle indexing structure of claim 1, wherein: the bottom end of the output main shaft (1) and the bottom end of the transmission shaft (12) are both provided with a transmission belt (5), and the transmission shaft (12) and the output main shaft (1) transmit torque through the transmission belt (5).