KR20210111118A - precise finishing machine for rod - Google Patents

Abstract

The present invention relates to an automatic grinding machine for a shaft member which performs a precision grinding operation on inner and outer surfaces of the shaft member among machine parts. The automatic grinding machine for a shaft member comprises a grinding bed. The grinding bed includes: a power transmission ball screw installed at a bottom portion of the grinding bed in a widthwise direction; a screw motor connected to one end of the power transmission ball screw, wherein the power transmission ball screw is driven and rotated by the screw motor; and a workpiece positioning tray installed at a left end of the grinding bed, and connected to the power transmission ball screw, wherein as the power transmission ball screw is rotated by the driving of the screw motor, the workpiece positioning tray is lead and adjusted in position on the grinding bed. The workpiece positioning tray includes multiple workpiece holding steels provided within a workpiece clamping assembly to fix the workpiece clamping assembly. On the grinding bed, a W-shaped channel is slidably formed so that the workpiece positioning tray is installed. In accordance with the present invention, the automatic grinding machine capable of automatically grinding multiple shaft members is provided, so automatic grinding can be performed on outer surfaces and internal voids of multiple parts. Accordingly, the processing efficiency is improved to save labor.

Description

Shaft member automatic grinding machine { precise finishing machine for rod }

The present invention relates to an automatic shaft member polishing machine for performing a precision finish (precise finish) operation on the inner and outer surfaces of the shaft member among machine parts.

As the industry develops in recent years, parts and materials related industries are developing to increase the precision and strength of shafts used as moving rods and shafts in automobiles, industrial equipment, and robot industries. The straightness of the shaft is an important reference condition in the case of precision parts, and accordingly, development of material technology and process technology that can increase the straightness of parts in recent technology development is in progress.

Metal rods such as abrasive rods are key components in machine-related industries, and shafts obtained by using abrasive rods are core machine parts used for hydraulic cylinders, pneumatic cylinders, LM shafts, etc. The required straightness must be ensured. Therefore, it is necessary to maintain the straightness and hardness of the abrasive rod to improve accurate motion transmission characteristics and durability.

In particular, these abrasive rods are subjected to a high-frequency heat treatment process to increase hardness after turning and before proceeding with the grinding process. However, during the heat treatment process, depending on the difference in the degree of heat treatment of each surface, partial stress distribution occurs and the shaft is bent. Therefore, straightness correction is performed to increase productivity by minimizing the margin of the grinding process for the bent abrasive rod after heat treatment.

On the other hand, such polishing equipment uses a mono-processing method in which polishing for internal voids and polishing for external surfaces are separately carried out. However, recently, a facility has been developed that allows both the grinding of the inner void and the outer grinding of a single part through an external grinding machine in a single shaft lathe at the same time.

However, the axial feed of the main shaft is mostly automatic feed, and the suction motor leads the rotation of the grinding head. When applied, there is a problem in that processing efficiency is lowered, labor is required, and the polishing precision is also lowered.

(001) Republic of Korea Registered Utility Model No. 20-0422068

The present invention has been devised to solve the problems of the prior art, and the present invention is to provide an automatic shaft member polishing machine capable of performing automatic polishing for a plurality of shaft member outer surfaces and internal voids at the same time.

According to a feature of the present invention for achieving the above object, the present invention has a power transmission ball screw installed at the bottom of the grinder bed along the width direction, and a screw motor is connected at one end of the power transmission ball screw, and the ball screw In the electric drive electric ball screw rotation, the left end of the grinding machine bed installs the workpiece positioning tray, the workpiece positioning tray is connected by the power transmission ball screw, the ball screw electric drive electric ball screw rotates, and the rotation of the power transmission ball screw is also rotated. Leading the workpiece positioning tray adjusts the position of the grinder bed body; The workpiece clamping assembly is fixed on the workpiece positioning tray, and a plurality of workpiece clamping steels are installed in the workpiece clamping assembly, and parts can be clamped by inserting parts in all the workpiece clamping steels.

The right-hand member of the grinder bed has a main drive motor installed, and the output end of the main drive motor is connected to the motor gear, the main drive motor parallel and the crankshaft are installed on one side of the main drive motor, and one end of the crankshaft is installed. The crankshaft gear is connected in the , and the crankshaft gear and the motor gear are meshed together.

It is connected to multiple links along the width direction on the crankshaft, and the front hitch of all links (1) performs reciprocating motion among one piston and the cylinder cover installed on all pistons, and the front ends of all pistons are The grinding head is connected to the rotary motor, and the output ends of all grinding head rotary motors are connected to the telescoping shaft member, and the front end of the telescoping shaft member is coupled to the coupling joint through the grinding head; The quantity of the grinding head is equal to the quantity of the workpiece holding steel, and the corresponding work holding steel is set on the axis of all grinding heads, and all the grinding heads are set in the corresponding installed workpiece holding steel. Reciprocating grinding is performed on the workpiece.

On the other hand, according to the present invention, the grinding machine bed body is formed in a W-shaped channel, and the W-shaped channel is slidably connected to the workpiece positioning tray.

and the workpiece clamping assembly includes a next workpiece clamping positioning plate and a workpiece clamping positioning plate, wherein the workpiece clamping position on the pressure screw connection on the workpiece clamping positioning plate under the lower part is determined through the plate.

The following effects can be expected in the shaft member automatic polishing machine according to the present invention as described above.

That is, in the present invention, an automatic polishing machine capable of automatically polishing a plurality of shaft members can be provided, and at the same time, automatic polishing can be performed on the outer surfaces and internal voids of a plurality of parts, and the effect of improving processing efficiency and saving labor there is

The present invention adopts a multiple spindle grinding head with a simple structure, sets the quantity of shaft members by itself according to need, and can perform automatic grinding on the outer surface and inner voids of multiple parts at the same time. And there is an effect of improving the processing efficiency.

On the other hand, the present invention enables the reciprocating movement of the shaft member at fixed intervals in the axial direction to simultaneously perform spin finishing and reciprocating axial polishing for parts, thereby compensating for the disadvantages of reciprocating axial grinding. can have an effect.

1 is a front view showing an automatic shaft member grinding machine according to the present invention.
Figure 2 is a perspective view showing an automatic shaft member grinding machine according to the present invention.
Figure 3 is a perspective view showing a crankcase constituting the shaft member automatic grinding machine according to the present invention.
Figure 4 is a plan view showing the shaft member automatic grinding machine according to the present invention.

Hereinafter, a shaft member automatic polishing machine according to a specific embodiment of the present invention will be described with reference to the accompanying drawings.

On the other hand, the present invention is to improve and supplement the conventional shaft member automatic end machine, the same technical configuration of the prior art and the present invention is described and illustrated in the prior art by referring to the bar described and shown in the prior art.

1 to 4, the shaft member automatic grinder according to the present invention includes a grinder bed 1, and a power transmission ball screw 12, power along the width direction at the bottom of the grinder bed 1 The transmission ball screw 121 end connection screw motor 11, the screw motor 11 driving power transmission ball screw 12 rotation is installed.

A workpiece positioning tray 2 is installed at the left end of the grinder bed 1, the workpiece positioning tray 2 is connected by a power transmission ball screw 12, and a screw motor 11 driving power transmission ball screw 12 is installed. Rotating, the rotation of the power transmission ball screw 12 also leads the workpiece positioning tray 2 to adjust its position in the grinder bed 1 .

A W-shaped channel 13 is installed in the grinder bed 1, and the workpiece positioning tray 2 slidingly connected on the W-shaped channel 13 is a grinder bed of the workpiece positioning tray 2 ( 1) to be moved.

A workpiece clamping assembly is fixed on the workpiece positioning tray 2, a plurality of workpiece clamping steels 20 are installed in the workpiece clamping assembly, and parts can be inserted and fixed in all the workpiece clamping steels 20. In use, each of the necessary and abrasive parts (1) is placed and secured in the workpiece holding steel (20).

The workpiece clamping assembly comprises a workpiece clamping positioning plate (3) and a workpiece clamping positioning plate (4) under, the workpiece clamping positioning plate (3) on the pressure screw (5) connection on the workpiece clamping positioning plate (3) under 4) Through fastening screws (5) to secure multiple parts.

The right-hand member of the grinder bed 1 is provided with a main driving motor 14 , and connects an output end of the main driving motor 14 to the motor gear 15 . The main drive motor 14 parallel and the crankshaft 17 are installed next to the main drive motor 141, and the crankshaft 171 end is connected to the crankshaft gear 16, and the crankshaft gear 16 is It is connected to mesh with the motor gear (15).

Connect to multiple link portions 18 along the width direction on the crankshaft 17, and lay all link portions 18 with front hitch (1) one piston 19, all pistons 19 reciprocating motion among the cylinder covers. All pistons (19) Front hitch (1) One grinding head rotating motor (9), all grinding head rotating motor (9) The output end of the rotating motor (9) is telescoping shaft member (8) Connected to the telescoping shaft member (8), the front end shaft coupling (7) via a connecting grinding head (6). The quantity of the grinding heads 6 is equal to the quantity of the workpiece holding steels, and the corresponding workpiece holding steel 20 is set on the axis of all grinding heads 6, and all the grinding heads (6) performs reciprocating grinding with respect to the workpiece in the correspondingly installed workpiece fixing steel 20. If the outer surface of the part needs grinding, immediately change the grinding head (6) to the part that needs grinding, and immediately install the part from the upper and lower workpiece clamping positioning plate, change to grinding, set, against the outer surface of the part A device for polishing was implemented.

The right-hand member of the grinder bed 1 is provided with a crankshaft cabinet 10 , and the crankshaft cabinet 10 includes a main driving motor 14 , a crankshaft 17 and a link unit 18 . Within the covering, it is possible to prevent such a member from being damaged.

Working principle of the present invention

When grinding the parts installed in the workpiece clamping assembly, first install the many-demand grinding parts in the workpiece clamping assembly, then fix the parts through the clamping screw, open the screw motor power switch, and power transmission ball screw lead the workpiece Through the positioning tray, finely adjust the axial position of the part and the grinding head. Then open the main generator power source, operate the main drive motor, the main drive motor leading motor gear starts to rotate, the power is transmitted to the crankshaft gear, the crankshaft, the leading and connecting link part starts and rotates, the link Leading the connecting piston with the part, the multiple pistons now implement reciprocating axial movement among the cylinder covers of the assembly. The grinding head rotating motor of the piston lead and assembly, the grinding head rotating motor again lead the grinding head to reciprocate in the axial direction, In addition, the grinding head (grinding head) requires the part hole of grinding and implements reciprocating movement inside, and performs reciprocating grinding for the void inside the part through the abrasive. Then, the grinding head rotating power suction motor is turned on again, at this time the grinding head rotating power suction motor leading grinding head generates a rotating motion, and a plurality of grinding heads Require abrasive part holes and start spin finishing inside. Faced with the axial reciprocating motion of the grinding head and the rotational motion of the grinding head, a function of automatically performing timing grinding for multiple parts at the same time was implemented. other critical functions

The function) is: if the outer surface of the part needs to be polished, immediately change the grinding head to the part that needs to be ground, and immediately install the part in the workpiece clamping assembly, change to grinding and set, then grind on the outer surface of the part Implemented a device that proceeds.

The present invention implements the grinding of the internal voids and the outer surface of multiple parts at the same time in one grinding machine, adopts a multiple spindle grinding head, and does not limit the number of shaft members , it is decided by itself based on the number of axes, and it is possible to select 6 axes, 8 axes, 10 axes, etc.), greatly improving the abrasive machining efficiency. The present invention adopts the crankshaft link mechanism, and the rubbing shaft (set) now proceeds with the radial rotational spin finishing parts, while generating the axial fixed interval reciprocating movement, and at the same time spin finishing for the parts. ) and axial reciprocating grinding, changing the disadvantages of manual axial reciprocating grinding on demand, and implementing multiple spindle, diametrical, and axial automatic grinding functions.

The right of the present invention is not limited to the embodiments described above, but is defined by what is described in the claims, and a person of ordinary skill in the art can make various modifications and adaptations within the scope of the claims. it is self-evident

The present invention relates to an automatic shaft member polishing machine that performs a precision finish operation on inner and outer surfaces of a shaft member among machine parts. A grinding machine is provided, and at the same time, automatic grinding can be performed on the outer surfaces and internal voids of multiple parts, and there is an effect of reducing labor by improving processing efficiency.

1: grinder bed 2: workpiece positioning tray
4: Workpiece clamping positioning plate 5: Captive screw
6: grinding table 7: shaft coupling
8: telescopic shaft 9: grinding table rotation motor
10 crankshaft cabinet 11: screw motor
12: Power transmission ball screw 13: W-type channel
14: main drive motor 15: motor gear
16: crankshaft gear 17: crankshaft
18 ; Link part 19: piston
20: Workpiece fixing steel.

Claims (1)

Consists of a grinder bed:
The grinder bed,
a power transmission ball screw is installed at the bottom of the grinder bed along the width direction;
a screw motor is connected to one end of the power transmission ball screw;
the screw motor driving power transmission ball screw is rotated;
a workpiece positioning tray is installed at the left end of the grinder bed;
The workpiece positioning tray is connected by a power transmission ball screw,
As the screw motor driven power transmission ball screw rotates, leading the workpiece positioning tray to adjust its position in the grinder bed:
In the workpiece positioning tray,
a plurality of workpiece clamping steels provided within the workpiece clamping assembly to secure the workpiece clamping assembly;
A shaft member automatic grinder, characterized in that on the grinder bed, a W-shaped channel slidably connected to install the workpiece positioning tray is formed.

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