KR101120881B1

KR101120881B1 - The hi-speed separate control index with efficiency rotary-drive

Info

Publication number: KR101120881B1
Application number: KR1020100054949A
Authority: KR
Inventors: 박동수
Original assignee: 주식회사 대영테크
Priority date: 2010-06-10
Filing date: 2010-06-10
Publication date: 2012-02-27
Also published as: KR20110135186A

Abstract

The present invention is a rotational drive part (particularly, a key function performing element in the rotational precision and the machining accuracy of the workpiece according to the rotation among the high-speed division indexes installed for the purpose of rotating the workpiece processed in a machine tool (machining center, tipping center, etc.) This invention relates to a highly efficient rotary drive unit with a high speed index that can greatly improve the structure of a rotation transmission gear, a rotary clamp, etc., and contribute to a more precise rotational motion and a workpiece processing, as well as an improvement in productivity and life extension.
That is, the hypoid pinion is a hypoid gearwheel to ensure enhanced durability, high rigidity, high speed splitting operation and rotational precision without any occurrence of backlash when driving between the lower part of the index rotary table and the servomotor. A rotary drive unit having a hypoid gear to be coupled thereto; In addition, the lower part of the table post moves the needle bearing on one side and the other side along a narrow tapered slope according to the forward and backward movements of the push rod and piston of the driving air cylinder, while the clamp gib and clamp pad are opened or contracted to release clamping or clamping. Rotatable clamping portion; It was made by constructing.

Description

The hi-speed separate control index with efficiency rotary-drive

The present invention is a rotational drive part (particularly, a key function performing element in the rotational precision and the machining accuracy of the workpiece according to the rotation among the high-speed division indexes installed for the purpose of rotating the workpiece processed in a machine tool (machining center, tipping center, etc.) This invention relates to a highly efficient rotary drive unit with a high speed index that can greatly improve the structure of a rotation transmission gear, a rotary clamp, etc., and contribute to a more precise rotational motion and a workpiece processing, as well as an improvement in productivity and life extension.

In general, the rotary rotation index is used to cut large workpieces of machine tools, in particular, the workpieces are pre-mounted to the jig and waited, the jig is transferred to the machining area of the machine tool according to the processing sequence, and then the jig is transferred to the index rotary table assembly. The workpiece is being machined in the seated state.

In addition, the jig is sequentially mounted on the index rotary table assembly, and after processing of the workpiece, the jig is taken out to the jig waiting part to maximize the efficiency of the unprocessed.

However, the index table requires linear rotation because it moves linearly to enter and export the jig and rotates the index according to the workpiece machining state of the assembly on the index rotation table. Therefore, accurate rotation and control are required for precise rotation. It is a very complex configuration.

The configuration and operation of the above-described index table assembly with respect to the accurate control of the index rotating table will be described in more detail as follows.

Rotating transmission gear provided in the conventional high speed division index for multi-face machining by rotating the example work,
Since the worm wheel made of SCM440 and the worm wheel made of phosphor bronze are applied in a worm gear system where the gears mesh with each other,
In addition to the high wear resistance, excessive backlash may occur during use, which causes a considerable problem of deterioration of precision.
The rotation transmission structure of the worm gear type has a problem that the rotation speed is low because the reduction ratio between the worm and the worm wheel is large, and the productivity is greatly reduced due to the decrease in cycle time.

In addition, the rotary clamping device (aka brake) provided in the conventional high-speed division index,
As it is a simple pressurized brake system, not only unnecessary power consumption is required because a considerable pressurized power source is required for the clamping operation that requires more than twice the torque of the processing torque.
Due to the slip phenomenon, the clamping reaction and response speed were slow, which caused the deterioration of the rotation control function.

Accordingly, in the present invention, unlike the worm gear system in which the backlash is large when the rotation index table is rotated, the backlash has almost no backlash, and the improved durability and the high rigidity, the high speed splitting operation, and the rotational motion are greatly improved. A drive unit; High efficiency rotary clamping unit capable of more precise and perfect clamping operation with less pressing force; The main objective is to provide a fast partitioning index containing a completed as a technical problem.

The present invention for achieving the above technical problem to ensure enhanced durability and high rigidity, high-speed split operation and rotational precision without any backlash occurs when driving between the lower portion of the index rotary table and the servo motor The hypoid pinion may include: a rotation driving part including a hypoid gear to which the hypoid gear wheel is engaged; In addition, the lower part of the table post moves the needle bearing on one side and the other side along a narrow tapered slope according to the forward and backward movements of the push rod and piston of the driving air cylinder, while the clamp gib and clamp pad are opened or contracted to release clamping or clamping. Rotatable clamping portion; It was made by constructing.

High-speed split index with high efficiency rotary drive of the present invention, as described above when rotating the rotary table, as well as more precise rotational operation without high backlash and high-speed split rotation operation, as well as improved productivity and durability of the machine and extended life as well as precision workability In addition, it is a useful invention that allows for a powerfully fast and precise clamping operation with less pressing force.

1 is a perspective view showing a preferred embodiment of the present invention
Figure 2 is a plan view seen from the index plane of the present invention
Figure 3 is an exemplary cross-sectional view of the index portion fracture of the present invention
Figure 4 is an hypoid wheel bone bottom coupling example of the intermediate rotor of the present invention
5 is a hypoid wheel bone coupling perspective view of the intermediate rotor of the present invention
6 is an exploded example of hypoid wheel coupling to the intermediate rotor of the present invention
Figure 7 is an exploded view of the rotary table, the intermediate rotor, the lower post of the present invention
Figure 8 is a rotary table, the intermediate rotor, the lower post cross-sectional coupling example of the present invention
Figure 9 is an enlarged view of the cross section of the rotary clamping portion of the present invention
Figure 10 is an enlarged cross-sectional view of the rotary clamping portion of the present invention
11 is an exemplary view showing an operating state of the rotary clamping unit of the present invention.

High-speed split index having a high efficiency rotary drive of the present invention will be described in more detail based on the accompanying drawings,

That is, the present invention, as shown in Figure 1 is provided with a rotary table 101 at the top, the lower side of the intermediate rotary body 105 and the lower post 102 is combined with the rotary table 101 is rotated simultaneously Each connection is provided
A rotational drive servomotor 103 is installed at one side, and the rotational power of the servomotor 103 is provided between the axis of the drive servomotor 103 and the intermediate rotor 105 under the rotary table 101. Rotating drive unit 110 for transmitting to the rotary table 101 is provided,
In the high-speed split index of the lower post 102, one side is provided with a rotary clamping portion 150, which is used when the rotation stop of the rotary table 101 is required,

The rotary drive unit 110 is the hypoid pinion 201 of the servo motor 103 to ensure enhanced durability and high rigidity, high-speed split operation and rotational precision without any phenomenon of the backlash at the time of driving Tied to the shaft,
The hypoid wheel 105a is configured as a hypoid gear type which is configured around the intermediate rotator 105c appearance and then meshed with each other;

The rotary clamping unit 150 is coupled to the piston 160 in which the needle bearing seating groove 161 is engraved at the end of the push rod 152 of the driving air cylinder 151,
On the outside of the piston 160 is a clamp gib 163 is assembled with a tapered inclined surface on one side is wide and the other side on the inner surface friction with the needle bearing 162,
The outer side of the clamp gib 163 and the pressure is friction (clamping) or released by the inner wall of the clamp groove (105b) formed in the table lower poster 102 while simultaneously flowing in accordance with the opening or contraction of the clamp gib (163) By configuring the clamp pad 165,
The clamp gib 163 and the clamp pad 165 is configured to be clamped while opening or contracting according to the forward and backward movements of the cylinder.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention configured as described above is provided with a jig on which a workpiece is taken on the rotary table 101, and the intermediate rotary member 105 and the lower post 102 are configured to support a large load of the rotary table 101. To support heavy loads,

The rotary table 101 is integrally fixed to the lower side of the rotary table 101 to be rotated at the same time as the rotary table 101, and is rotated by the rotary drive unit 110 supplied to the servomotor 103 outside the index. The intermediate rotor 105c operates to rotate forward and reverse by the hypoid wheel 105a,

The rotary drive unit 110 is provided with a servo motor 103 in a separate space in the index and the hypoid pinion 201 of the type to prevent the phenomenon of backlash separately on its blessing, the upper rotary table 101 And the hypoid wheel 105a of the intermediate rotating body 105c integrally and integrally rotated)

The rotary clamping unit 150 includes a clamp groove 102b on the lower post 102 to rotate the upper and lower inner walls of the clamp groove 102b for control during forward and reverse rotation of the rotary table 101. Operate to accurately control the heavy weight of the phase,

The push rod 152 is reciprocated left and right by the driving air cylinder 151 to the inside of the clamp groove 102b, and a needle bearing seating groove 161 is provided at one end of the push rod 152. The push rod 152 is reciprocated left and right by the air cylinder 151 by the bearing 162, so that the needle bearing 162 is pushed by the inclined surface of the needle bearing seating groove 161 when the push rod is pressed. In accordance with the traveling direction of 152 to operate the clamp gib 163 to expand and contract,

As the clamp gib 163 expands and contracts, dust and scattering due to the protection of the parts of the rotary clamping part 150 and friction of the clamp groove 105b formed on the lower post 102 outside the clamp gib 163. The clamp pad 165 is configured to audit the outside of the clamp gib 163 so as to prevent the inflow of the inner part, and thus the friction pad is more precisely prevented by the clamp pad 165 when the clamp gib 163 is operated. Can work.

In this way, the weight of the workpiece is accurate, at the time of reverse rotation, while accurate, precisely for the precise rotation of the gears that can support the rotary table in the case of external impact due to the rotation is configured in the rotary drive unit 110 Since the hypoid pinion 201 can precisely control the hypoid wheel 105a formed in the intermediate rotor 105c, there is an effect that enables precise work.

The push rod 152 operated by the air cylinder 151 is reciprocated left and right by the air cylinder 151 and pushes the upper and lower inner walls of the clamp groove 102b of the lower post 102 by the push rod 152. The piston 160 installed in the rod 152 has a clamp base portion 163 having an inclined surface in one direction by the plurality of needle bearings 162 provided in the bearing seating groove 161, and thus the clamp groove 102b. Clamp pads 165 that can prevent breakage due to friction are inserted between the axles and operate to accurately control the lower post 102 integrally connected to the rotary table 101 while being expanded and contracted.

101: rotary table 102: lower post
102b: clamp groove 103: servomotor
105: intermediate rotor 105a: hypoid wheel
105c: intermediate rotor 110: rotary drive unit
150: rotary clamping unit 151: air cylinder
152: push rod 160: piston
162: needle bearing 161: bearing seating groove
163: clamp gib 165: clamp pad
201: hypoid pinion

Claims

The upper side is provided with a rotary table 101, the lower side is coupled to the rotary table 101 and the intermediate rotary body 105 and the lower post 102 are rotated at the same time, respectively, the one side is a rotary drive servo The motor 103 is installed, and the rotational power of the servo motor 103 is transmitted to the rotary table 101 between the drive servomotor 103 shaft and the intermediate rotor 105 under the rotary table 101. In the normal high-speed split index is provided with a rotation driving unit 110, one side of the lower post 102 of the lower side is provided with a rotary clamping unit 150, which is used when the rotation stop of the rotary table 101 is required. ,

The rotary drive unit 110 is the hypoid pinion 201 of the servo motor 103 to ensure enhanced durability and high rigidity, high-speed split operation and rotational precision without any phenomenon of the backlash at the time of driving The hypoid wheel 105a, which is coupled to the shaft, is configured in the outer circumference of the intermediate rotor 105c, and is configured as a hypoid gear type that is geared to each other;

The rotary clamping part 150 is coupled to the piston 160 in which the needle bearing seating groove 161 is engraved at the end of the push rod 152 of the driving air cylinder 151, the outer side of the piston 160 A clamp gib 163 having a wider one side and a narrow tapered inclined surface is assembled on the inner surface friction with the needle bearing 162, and the outer side of the clamp gib 163 opens or contracts with the clamp gib 163. While simultaneously flowing along the inner wall of the clamp groove (105b) formed in the lower poster table 102 and the pressure friction (clamping) or pressure-release clamp pad 165, the clamp according to the forward and backward movement of the cylinder A high-speed split index having a high efficiency rotary drive unit including; the gib 163 and the clamp pad 165 are configured to be clamped while opening or contracting.