CN109015017A - A kind of numerically-controlled machine tool electric-controlled type shaped piece universal location device - Google Patents

Abstract

The invention relates to an electronically controlled special-shaped universal positioning device for a numerical control machine tool, which belongs to the field of mechanical processing. The device includes a milling machine and a sliding table installed on the milling machine, and also includes a positioning tool detachably installed on the sliding table. The positioning tool includes a base horizontally arranged above the slide table, three linear push rod motors evenly arranged in the circumferential direction on the base, a circular workbench connected to the base through the three linear push rod motors, and a control box; the bottoms of the three linear push rod motors are all fixedly connected to the base; the linear push rod motors are provided with push rods that can reciprocate up and down along a straight line, and the top ends of the push rods are universally connected to the workbench. On the side wall of the outer circumference; the control box is electrically connected to the three linear push rod motors and controls the synchronous movement of the three linear push rod motors. The device of the invention can complete the rapid positioning of the special-shaped parts, and solve the problem of poor applicability of traditional clamps and special clamps.

Description

An electronically controlled special-shaped universal positioning device for CNC machine tools

technical field

The invention belongs to the field of mechanical processing, and in particular relates to an electronically controlled special-shaped piece universal positioning device for a numerically controlled machine tool.

Background technique

Thermal CNC machine tool is the abbreviation of digital control machine tool. It is an automatic machine tool equipped with a program control system. It is suitable for the automatic production of mass products. CNC milling machine is an automatic production equipment for milling workpieces. Milling machines are mostly used for The outer end faces of some conventional workpieces are milled. For the positioning of conventional products, some general-purpose tools such as vise clamps and indexing head clamps are often used. However, for the internal processing of some special-shaped parts, such as a slanted top part with a hook shape inside, this type of part has an inner hook and a sloping top structure, and the direction of the cavity has an angle with the direction of the shape; for such special-shaped parts Clamping and positioning, usually using vise clamping, by calculating the tangent value of the inclination angle, placing the shape of the part at a specified angle and then processing, this method is complicated to operate, the auxiliary time before processing is long, and the failure rate is high; or for these special shapes A special fixture is designed for the workpiece, which can directly place the shape of the part at a certain angle to meet the processing requirements, but the special fixture can only be used for a specific workpiece, and the development cost of the special fixture is high, so the applicability Not strong.

Contents of the invention

In order to solve the deficiencies in the prior art, the purpose of the present invention is to provide an electronically controlled special-shaped universal positioning device for CNC machine tools, through which the positioning tool can complete the rapid positioning of special-shaped parts, and solve the problem of the application of traditional fixtures and special fixtures. Sexual problems.

In order to achieve the above object, the specific scheme adopted by the present invention is:

An electronically controlled universal positioning device for special-shaped parts for a numerically controlled machine tool, which is set on a milling machine and includes a slide table mounted on the milling machine and a positioning tool detachably mounted on the slide table. The base above the table, the three linear push rod motors evenly arranged in the circumferential direction on the base, the circular workbench and the control box connected to the base through the three linear push rod motors; the three linear push rod motors The bottom of the motor is fixedly connected to the base; the linear push rod motor is provided with a push rod that can reciprocate up and down along a straight line, and the top of the push rod is universally connected to the outer peripheral side wall of the workbench;

The control box is electrically connected with the three linear push rod motors and controls the synchronous movement of the three linear push rod motors.

As a further optimization of the above scheme, the linear push rod motor is fixedly connected to the base through a detachable fixing seat arranged on the base; the fixing seat includes a square mounting part, and the four corners of the mounting part vertical through-holes are opened at each place, a connecting part is provided on the mounting part, a square raised part is arranged on the bottom of the linear push rod motor, and a horizontal through-hole is opened inside the raised part. The connecting part is provided with a receiving cavity which is imitated with the protruding part, the bottom of the linear push rod motor abuts on the connecting part and the protruding part is embedded in the containing cavity, and the protruding part is fixed by the cooperation of bolts and nuts. fixed in the chamber.

As a further optimization of the above scheme, a ball seat is provided on the outer peripheral side wall of the workbench corresponding to the linear push rod motor, and a universal ball head is threaded on the top of the linear push rod motor , the universal ball head is universally connected with the ball head seat.

As a further optimization of the above scheme, a cylindrical guide rod is connected to the ball head seat; the guide rod is movably inserted into the workbench through the outer peripheral side wall of the workbench; The bottom, corresponding to each guide rod, is provided with a hold-down bolt, and the hold-down bolt passes through the bottom wall of the workbench from bottom to top and abuts on the guide rod.

As a further optimization of the above scheme, the upper surface of the workbench is uniformly provided with installation grooves, and each installation groove extends radially in a straight line from the center of the workbench to the outer circumferential side wall; the longitudinal section of the installation groove is Inverted T shape. Generally, there are three installation grooves, and the angle between two adjacent installation grooves is 60°.

As a further optimization of the above scheme, a clamping device for clamping special-shaped parts is correspondingly provided on each installation groove; four corners of the base are also provided for fixing the base on the slide Clamping device on the table.

As a further optimization of the above solution, the clamping device includes a pressure plate, a pressure plate screw, a fastening nut and a height block; the pressure plate screw is vertically established and its bottom end is clamped in the installation groove or on the slide table; The raised block and the special-shaped piece or the base are separated on both sides of the pressure plate screw, and the upper surface of the raised block is on the same plane as the upper surface of the special-shaped piece or the base; the pressure plate is sleeved on the pressure plate screw and It is located above the height block and the special-shaped part or the base; the fastening nut is sleeved on the pressure plate screw and is located directly above the pressure plate.

Beneficial effect:

The electronically controlled universal positioning device for special-shaped parts used in CNC machine tools according to the present invention controls the inclination angle of the workbench through three linear push rod motors, and then fixes the special-shaped parts horizontally on the workbench. The workbench is inclined to form an angle relatively, so the required processing angle can be accurately formed through the present invention, and the special-shaped parts can be quickly positioned and clamped, thereby increasing production efficiency, improving processing quality, and its applicability Strong, can meet the needs of different product shape placement angles.

Description of drawings

Fig. 1 is the schematic diagram of the three-dimensional structure of the special-shaped piece universal positioning device of the present invention;

Fig. 2 is a schematic diagram of the working state of the special-shaped piece universal positioning device of the present invention;

Fig. 3 is a disassembled assembly and a partial cross-sectional schematic diagram of the universal positioning device for special-shaped parts according to the present invention;

Fig. 4 is the enlarged schematic diagram of place A in Fig. 3;

Fig. 5 is the enlarged schematic diagram of place B in Fig. 3;

Reference signs: 1, sliding table; 2, base; 3, linear push rod motor; 3a, raised part; 4, workbench; 4a, pressing bolt; 4b, installation groove; 5, fixed seat; 5a, installation 5b, connecting part; 5b1, accommodation chamber; 6, ball seat; 6a, universal ball head; 6b, guide rod; 7, clamping device; 7a, pressure plate; 7b, pressure plate screw; 7c, fastening nut ; 7d, an elevated block; 8, a control box.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention and the accompanying drawings.

Example 1

An electronically controlled special-shaped universal positioning device for CNC machine tools, which is set on a milling machine, the structure is shown in Figure 1-3, including a sliding table 1 installed on the milling machine and detachably fixed on the sliding table 1 The positioning tool; the positioning tool includes a base 2, three linear push rod motors 3 and a circular table 4 from bottom to top; the base 2 is horizontally arranged above the slide table 1; the three linear The push rod motor 3 is arranged between the base 2 and the workbench 4, and the three linear push rod motors 3 are evenly arranged in the circumferential direction; the bottoms of the three linear push rod motors 3 are all fixedly connected to the base 2; The linear push rod motors 3 are provided with push rods that can reciprocate up and down along a straight line, and the top ends of the push rods of the three linear push rod motors 3 are universally connected to the side wall of the workbench 4 . In the working state, fix the special-shaped part or the fixture for installing the special-shaped part on the workbench 4, and the push rods of the three linear push rod motors 3 protrude upwards, and the protruding distances are different, so that the workbench 4 is inclined To a certain angle, so as to achieve the purpose of placing the shape of the special-shaped parts at a certain angle. It can quickly and accurately position and clamp special-shaped parts, thereby improving production efficiency and processing quality, and its applicability is strong, which can meet the needs of different product placement angles.

The base 2 is provided with a fixing base 5 corresponding to the three linear push rod motors 3 respectively, and the fixing base 5 is detachably fixed on the base 2, and the fixing base 5 includes a square mounting part 5a, the four corners of the installation part 5a are provided with vertical through holes, and the fixing seat 5 is fixedly installed on the base 2 through four bolts respectively passing through a through hole; the installation part 5a is provided with a The connecting portion 5b, the bottom of the linear push rod motor 3 is provided with a square raised portion 3a, the raised portion 3a is provided with a transverse through hole, and the connecting portion 5b is provided with a shape similar to the raised portion 3a. Shaped housing chamber 5b1, the bottom of the linear push rod motor 3 abuts on the connecting part 5b and the raised part 3a is embedded in the housing chamber 5b1, and the raised part 3a is fixed in the housing chamber through the cooperation of bolts and nuts within 5b1. Using the fixing method of the accommodating cavity 5b1 and the raised part 3a can enhance its stability, so as to ensure that there will be no vibration during the processing, which will affect the accuracy of the product; Linear actuator motor 3 for quick replacement, reducing downtime.

As shown in Figure 5, a ball head seat 6 is arranged on the outer peripheral side wall of the workbench 4 corresponding to the three linear push rod motors 3, and the top of the linear push rod motor 3 is threaded with ten thousand To the ball head 6a, the universal ball head 6a is universally connected with the ball head seat 6, and a cylindrical guide rod 6b is arranged on the back of each ball head seat 6, and the guide rod 6b passes through the workbench 4 The outer peripheral side wall of the outer circumference is movably embedded in the workbench 4; in the working state, the three linear push rod motors 3 work synchronously, and the push rods move upward in a straight line, driving the ball head seat 6 around the universal ball head 6a movement, and the guide rods 6b behind the three moving ball heads 6 extend outward or retract respectively for shape compensation, so that the table 4 is completely tilted.

At the bottom of the workbench 4, each cylindrical guide rod 6b is also provided with a hold-down bolt 4a. In the working state, the hold-down bolt 4a passes through the bottom wall of the workbench 4 from bottom to top, The end of the pressing bolt 4a abuts on the guide rod 6b, and the pressing bolt 4a is used to fix the guide rod 6b, thereby increasing the stability of the workbench 4.

The upper surface of the workbench 4 is evenly provided with three installation grooves 4b, and each installation groove 4b extends radially in a straight line from the center of the workbench 4 to the outer circumferential side wall, and the clip between two adjacent installation grooves 4b The angle is 60°; the longitudinal section of the installation groove 4b is in an inverted T shape.

A clamping device 7 is provided on each mounting groove 4b, and the clamping device 7 includes a pressure plate 7a, a pressure plate screw 7b, a fastening nut 7c and a spacer 7d. In the installed state, the pressure plate screw 7b is vertically set up and inserted horizontally from the side opening of the installation groove 4b, the end of the pressure plate screw 7b is clamped in the installation groove 4b, and the height block 7d is placed on the clamped object and the upper surface of the heightening block 7d is at the same level as the upper surface of the clamped object, the pressure plate 7a is sleeved on the pressure plate screw 7b, and the pressure plate 7a is located between the heightening block 7d and the clamped object Above, the fastening nut 7c is sleeved on the pressure plate screw 7b and located directly above the pressure plate 7a, and the fastening nut 7c is tightened so that the pressure plate 7a interferes with the height block 7d and the clamped object. The special-shaped piece is placed on the top of the workbench 4, and the three clamping devices 7 above the workbench 4 can be used to quickly clamp and fix the special-shaped piece. The drawings do not illustrate the risers 7d of the three clamping devices 7 above the workbench 4 .

The four corners of the base 2 are also respectively provided with the same clamping device 7, and each corner is provided with a clamping device 7 for fixing the base 2 on the slide table 1, as shown in Figure 4 As shown, in the installed state, the pressure plate screw 7b is vertically set up and the bottom end is fixedly installed on the slide table 1, the raised block 7d and the base 2 are respectively located on both sides of the platen screw 7a, and the raised block 7d The upper surface and the upper surface of the base 2 are at the same level, the pressure plate 7a is sleeved on the pressure plate screw 7b, and the pressure plate 7a is located above the height block 7d and the base 2, and the fastening nut 7c is sleeved on the pressure plate screw 7b On and directly above the pressing plate 7a, tighten the fastening nut 7c so that the pressing plate 7a is in conflict with the pad 7d and the base 2. In this way, the base 2 is fixedly installed on the slide table 1, thereby further ensuring the stability of the positioning tool.

A control box 8 is arranged at the center of the three linear push rod motors 3 on the base 2, and the control box 8 is electrically connected with the three linear push rod motors 3 respectively. Through the control box 8, the three linear push rod motors are controlled. Push rod motor 3 moves synchronously.

The above is only a preferred embodiment of the present invention, and does not limit the protection scope of the present invention, so any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still belong to protection scope of the present invention.

Claims (8)

1. An electronically controlled special-shaped piece universal positioning device for CNC machine tools, which is arranged on a milling machine, characterized in that: the positioning device includes a slide table (1) installed on the milling machine and a slide table (1) that is detachably installed on the slide table ( 1) The positioning tool on the top, the positioning tool includes a base (2) horizontally arranged above the slide table (1), three linear push rod motors (3) uniformly arranged in the circumferential direction on the base (2), The circular workbench (4) and the control box connected to the base (2) through the three linear actuator motors (3); the bottoms of the three linear actuator motors (3) are all fixed to the base (2) connection; the linear push rod motor (3) is provided with a push rod that can reciprocate up and down along a straight line, and the top of the push rod is universally connected to the outer peripheral side wall of the workbench (4); The control box (8) is electrically connected to the three linear push rod motors (3) and controls the synchronous movement of the three linear push rod motors (3). 2. An electronically controlled universal positioning device for special-shaped parts for CNC machine tools according to claim 1, characterized in that: the linear push rod motor (3) passes through a detachable fixing seat arranged on the base (2) (5) Fixedly connected with the base (2); the fixed seat (5) includes a square mounting part (5a), and vertical through holes are opened at the four corners of the mounting part (5a) , the mounting part (5a) is provided with a connecting part (5b), the bottom of the linear push rod motor (3) is provided with a square raised part (3a), and the raised part (3a) has a A transverse through hole, the connecting part (5b) is provided with a housing cavity (5b1) that is shaped like the raised part (3a), and the bottom of the linear push rod motor (3) abuts against the connecting part (5b) The raised part (3a) is embedded in the receiving chamber (5b1), and the raised part (3a) is fixed in the receiving chamber (5b1) through cooperation of bolts and nuts. 3. An electronically controlled special-shaped universal positioning device for CNC machine tools according to claim 1, characterized in that: the outer peripheral side wall of the worktable (4) corresponds to the linear push rod motor (3 ) are provided with a ball seat (6), the top of the linear actuator motor (3) is threaded with a universal ball head (6a), and the universal ball head (6a) is connected to the ball seat ( 6) Universal connection. 4. An electronically controlled special-shaped universal positioning device for CNC machine tools according to claim 3, characterized in that: a cylindrical guide rod (6b) is connected to the ball head seat (6); The guide rod (6b) is movably embedded in the workbench (4) through the outer peripheral side wall of the workbench (4); at the bottom of the workbench (4), each guide rod (6b) is provided with A pressing bolt (4a), said pressing bolt (4a) passes through the bottom wall of the workbench (4) from bottom to top and abuts on the guide rod (6b). 5. An electronically controlled universal positioning device for special-shaped parts for CNC machine tools according to claim 1, characterized in that: the upper surface of the workbench (4) is evenly distributed with installation grooves (4b), and each installation The grooves (4b) all extend radially in a straight line from the center of the workbench (4) to the outer peripheral side wall; the longitudinal section of the installation groove (4b) is in an inverted T shape. 6. An electronically controlled universal positioning device for special-shaped parts for CNC machine tools according to claim 5, characterized in that: there are three installation grooves (4b), and there are three installation grooves (4b) between adjacent installation grooves (4b). The included angle is 60°. 7. An electronically controlled universal positioning device for special-shaped parts for CNC machine tools according to any one of claims 5 or 6, characterized in that: each mounting groove (4b) is correspondingly provided with a clamping A clamping device for holding special-shaped parts; four corners of the base (2) are also provided with clamping devices for fixing the base (2) on the sliding table (1). 8. An electronically controlled universal positioning device for special-shaped parts for CNC machine tools according to claim 7, characterized in that: the clamping device (7) includes a pressure plate (7a), a pressure plate screw (7b), a fastening Nut (7c) and spacer (7d); the pressure plate screw (7b) is set up vertically and its bottom end is clamped in the installation groove (4b) or on the sliding platform (1); the spacer (7d) ) and the special-shaped piece or the base (2) are separated on both sides of the pressure plate screw (7b), and the upper surface of the raised block (7d) is on the same plane as the upper surface of the special-shaped piece or the base (2); The pressure plate (7a) is sleeved on the pressure plate screw (7b) and located above the height block (7d) and the special-shaped part or the base (2); the fastening nut (7c) is sleeved on the pressure plate screw (7b) and Located directly above the platen (7a).