TW201350255A - Servomotor-driven cam-based tool change mechanism - Google Patents

Abstract

The present invention relates to a servomotor-driven cam-based tool change mechanism, and particularly to a servomotor-driven cam-based tool change mechanism having a fast tool change process, which comprises a machine tool main body and a servomotor driving assembly. The machine tool main body comprises the tool magazine brackets mounted on two sides of a top thereof with a spindle arranged in the middle. The tool magazine brackets on the two sides have a front end to which a tool magazine swing arm is rotatably mounted. The tool magazine swing arm forms, in the interior thereof, a torsion spring retention slot in which a powerful pre-loaded torsion spring is rotatably received. The powerful pre-loaded torsion spring can normally bias the tool magazine swing arm downward. A disk-type tool magazine is arranged on the bottom of the tool magazine swing arm. A plurality of tool holders are arranged at the perimeter of the disk-type tool magazine. . The servomotor driving assembly comprises a servomotor that is fixed at one side of the disk-type tool magazine. The servomotor comprises a motor gear attached to a front end thereof. A cam shaft is arranged beside the motor gear. The cam shaft has a front section to which a transmission gear is mounted to engage with the motor gear, and a middle section to which two intermittence-free servo-specified cams are mounted so as to form a slide rail between the intermittence-free servo-specified cams, and a rear section to which a support seat is mounted. An index table is arranged beside the cam shaft. The index table has an outer circumference to which a plurality of transmission bearings are mounted, one of the transmission bearings being received in the slide rail between the intermittence-free servo-specified cams. This completes the servomotor-driven cam-based tool change mechanism of the present invention.

Description

Servo motor drive cam tool change mechanism

The invention belongs to a rapid knife selection technology of a processing machine, in particular to a servo motor transmission group which can be matched with a plurality of processing machines, and the motor transmission group is driven by a servo motor to make an idle servo dedicated cam on the cam shaft thereof. The sliding rail drives the transmission bearing, and then drives the indexing plate, so that the disc type tool magazine can quickly select the knife and the tool changing process does not stagnate, thereby providing the rapid tool changing requirement of the processing machine, and improving the processing precision and service life of the processing machine.

According to the prior art machining center, the tool change mechanism is mounted on the main body of the tool change mechanism, and the motor is connected to the electric control device. The motor drives the cam shaft and the arm and the spindle mounted on the main body of the tool change mechanism through the transmission device. Action, and according to the control of the program, the tool is correctly selected for positioning, and the tool exchange action is performed to complete various processing requirements, such as milling, drilling, boring, tapping, etc., and the tool change mechanism can be greatly shortened. Processing time and reduce production costs.

When the tool change is required for machining, the tool change mechanism selects the tool according to the control of the program. The servo motor drive gear is used to drive the gear on the camshaft, and the indexing disk is rotated to perform the tool selection. The gear meshing mode is combined with the transmission to reach the indexing disc rotation, and the knife selection, tool change and knife fastening action are performed. It will cause the selection of the knife, the change of the knife, the stoppage of the knife to be inaccurate, and the motion to be inconsistent, which will result in inaccurate damage to the tool during the tool change process, resulting in reduced processing efficiency, increased machining time, and increased production costs.

The inventor of the present invention has intensively discussed the tool change problem faced by the tool change mechanism in the above-mentioned machining center, and has been engaged in the research and development and manufacturing experience of related industries for many years, and has been continuously improving and testing. Successfully developed a servo motor drive cam tool change mechanism, in order to overcome the shortcomings of the tool change mechanism of the existing machining center due to the tool change, such as long tool change time, low machining efficiency, and stagnation of the tool change action.

Therefore, the main object of the present invention is to provide a servo motor transmission cam changing mechanism for fixing a servo motor transmission group to a side of a disc magazine, and the motor transmission group is driven by a cam shaft to drive the bearing. Dial to avoid the gap between the gear and the gear meshing transmission, resulting in inaccurate tool change or stagnation, and indeed improve the tool change stagnation tool speed is too slow, so as to provide a quick change of processing machinery Knife demand and improve machining machining accuracy and service life.

Based on the above, the present invention mainly achieves the foregoing objects and effects through the following technical means, which at least includes: a machine tool body, a tool holder bracket is arranged on both sides of the upper part of the machine body, and a spindle is arranged on the middle side, and The front end of the tool holder bracket on both sides is provided with a tool pocket swing arm. The inside of the tool holder swing arm is provided with a torsion spring fixing groove to pivot a strong pre-compression torsion spring. The compression torsion spring can press the tool swing arm in the normal state, and a disc type tool magazine is arranged at the bottom end of the tool magazine swing arm, and a plurality of gripper holders are arranged on the periphery of the disc type magazine; a servo motor transmission group includes: a servo motor, a motor gear, a camshaft, a plurality of transmission bearings and an indexing plate, the servo motor is locked on the side of the cutter-type tool magazine, a motor gear is arranged at the front end of the servo motor, and a cam shaft is arranged on the side of the motor gear. The front side of the camshaft is provided with a transmission gear and a motor gear. The middle section is provided with a non-intermittent servo-specific cam, and the non-intermittent servo-specific cam forms a slide rail. The rear side of the camshaft is provided with a fixed seat, and the side is provided with an indexing disc. The outer periphery of the indexing plate is locked with a plurality of transmission bearings, wherein one of the transmission bearings is accommodated in the non-intermittent servo-specific cam inner slide rail; thereby, when the servo motor drives the motor gear to rotate the transmission gear, the transmission gear drives the camshaft and has no interval The servo-dedicated cam rotates synchronously, so that it is accommodated in the transmission bearing in the non-intermittent servo-specific cam slide rail, and rotates according to the slide rail, thereby driving the indexing disc of the transmission bearing lock to rotate. Each of the transmission bearings corresponds to different machining tools, and the servo motor drive group can be set to drive the indexing plate to rotate rapidly through the program control, thereby quickly completing the selection and tool changing operations, greatly shortening the machining time and reducing the production cost. .

In this regard, through the specific implementation of the above technical means, when the servo motor of the present invention drives the camshaft, the camshaft-free intermittent servo-specific cam is synchronously rotated, so that the transmission bearing slides in the non-intermittent servo-specific cam inner slide rail, and drives the indexing disc. Fast rotation and precise positioning can achieve the functions of tool change or precise and fast without stagnation.

In order to provide a further understanding of the composition, features and other objects of the present invention, the following are a few preferred embodiments of the present invention, and The detailed description of the drawings will be followed by the implementation of the technical field.

The present invention is a servo motor drive cam tool change mechanism, in the specific embodiment of the invention and its components, as illustrated in the accompanying drawings, all related to front and rear, left and right, top and bottom, upper and lower, and horizontal and vertical Reference is made merely to facilitate the description, not to limit the invention, and to limit its components to any position or spatial orientation. The drawings and the dimensions specified in the specification may be varied in accordance with the design and needs of the specific embodiments of the present invention without departing from the scope of the invention.

For a brief structure of a servo motor drive cam tool change mechanism according to the present invention, please refer to FIG. 1 to FIG. 8 , the servo motor drive cam tool change mechanism includes at least: a machine tool body (20), the machine tool A tool holder (21) is arranged on both sides of the upper part of the body (20), a spindle (23) is arranged on the middle side, and a tool holder arm (22) is pivoted at the front end of the magazine holder (21) on both sides, and the tool holder swing arm (22) The inner side is provided with a torsion spring fixing groove (28) to pivot a strong pre-compression torsion spring (30), and the strong pre-compression torsion spring (30) can press the tool magazine swing arm (22) in a normal state, the tool magazine A disc type magazine (30) is arranged at the bottom end of the swing arm (22), a plurality of grip holders (80) are arranged on the periphery of the disc magazine (30), and a servo motor transmission group (50) comprises: a servo motor (51), a motor gear (52), a cam shaft (53), a plurality of transmission bearings (54) and an indexing plate (55), the servo motor (51) is locked to the side of the cutter-type tool magazine (30) a motor gear (52) is disposed at a front end of the servo motor (51), a cam shaft (53) is disposed at a side of the motor gear (52), and a front side of the cam shaft (53) is disposed The transmission gear (56) meshes with the motor gear (52), a non-intermittent servo dedicated cam (531) is arranged at the middle portion, and a fixed seat (57) is arranged at the rear side, and a slide rail is formed between the non-intermittent servo dedicated cams (531). (532), an indexing plate (55) is arranged on a side of the camshaft (53), and a plurality of transmission bearings (54) are locked on the outer periphery of the indexing plate (55), and a transmission bearing (54) is in the transmission process. The other transmission bearing (54) is sequentially inserted into the slide rail (532) on the side of the non-intermittent servo-dedicated cam (531); When the servo motor (51) drives the motor gear (52) to rotate the transmission gear (56), the transmission gear (56) drives the cam shaft (53) and the intermittent servo-free cam (531) to rotate synchronously, so that it is accommodated in the absence of The transmission bearing (54) of the slide rail (532) of the intermittent servo special cam (531) moves and rotates according to the slide rail (532), thereby driving the indexing disc (55) locked by the transmission bearing (54) to rotate, because each The transmission bearing (54) is corresponding to different machining tools, and the servo motor transmission group (50) can be set to drive the indexing plate (55) to rotate rapidly through the program control, thereby quickly completing the selection. And a tool change operation, greatly shortening the processing time course, reduce production costs.

Please refer to the sixth to eighth figures. In another embodiment of the present invention, a spindle (23) is disposed on the machine body (20), and a linkage plate (40) and a spindle (21) are disposed on both sides of the spindle (23). Synchronous displacement, the joint plate (40) is provided with a flat portion (41) and a concave portion (42) having a height difference, a cutter holder (21) is arranged on the front side of the machine body (20), and the inner holder of the magazine holder (21) is The tool magazine swing arm (22) is pivoted, and the inside of the tool pocket (22) is provided with a groove for accommodating the strong pre-compression torsion spring (24), and the strong pre-compression torsion spring (24) can swing the tool pocket (22) Pressing down, the magazine housing (24) that combines the tool pocket (22), And a roller (27) pivoted on the side roller adjusting seat (26) and a disc magazine (30) combined with the magazine housing (25), and the roller (27) is flat on the linkage plate (40) ( 41), when the concave portion (42) slides, the movement is smooth and does not shake, the disc magazine (22) is provided with a disc magazine (30), and the disc magazine (30) is provided with a magazine housing (24). The tool magazine box (24) is provided with a cutter head intermittent rotation mechanism, and the cutter head intermittent rotation mechanism, so that the tool magazine (30) can complete the tool selection and the tool change. When the machining needs to be changed, the knife holder (80) is oriented. Grab the knife, complete the knife and change the knife.

With the above-mentioned components, when the machine tool motor drives the main shaft (23) to move up and down, the linkage plate (40) is synchronously displaced and lifted, and cooperates with the disc type magazine (30) side roller adjustment seat (26) on the roller (27) on the linkage plate ( 40) Upward sliding lifting, when the roller is lowered from the flat portion (41) to the concave portion (42); then the concave portion (42) is raised to the flat portion (41), and the disk type tool magazine (30) synchronous displacement linkage quick change can be completed. The knife action, and the disc holder (30) is provided with a grip holder (80) on the circumference, and the grip holder (80) is provided with a lock bar (81) and an elastic spring (82), which cooperate with the loose knife block. (83) The knives and loose knives can be completed, and the cutters can be prevented from falling and flying out during the tool change.

Accordingly, it can be understood that the present invention is an innovative invention, which not only effectively solves the problems faced by the practitioner, but also greatly enhances the efficacy, and does not see the same or similar product invention or public use in the same technical field. At the same time, it has the effect of improving the efficiency. Therefore, the present invention has met the relevant requirements of the invention patent, and is the invention of the invention patent.

(20)‧‧‧ Machine body

(21)‧‧‧Knife holder

(22)‧‧‧Magnetic Swing Arm

(23)‧‧‧ Spindle

(24)‧‧‧Preloaded torsion spring

(25)‧‧‧Magnetic cabinet

(26)‧‧‧Roller adjustment seat

(27)‧‧‧Rollers

(28)‧‧‧Torsion spring fixing groove

(30)‧‧‧Disk magazine

(40)‧‧‧ linkage board

(41) ‧ ‧ flat

(42) ‧ ‧ recess

(50)‧‧‧Servo motor drive set

(51)‧‧‧Servo motor

(52)‧‧‧Motor gear

(53)‧‧‧Camshaft

(531)‧‧‧Without intermittent servo cam

(532)‧‧‧Slide rails

(54)‧‧‧ Transmission bearings

(55)‧‧‧Division

(56) ‧‧‧Transmission gear

(57)‧‧‧ Fixed seat

(80)‧‧‧Knife holder

(81)‧‧‧The knives hit the block

(82)‧‧‧Elastic springs

The first figure is a three-dimensional schematic diagram of a motor transmission group and a disk magazine of the present invention.

Second figure: is a schematic exploded perspective view of the motor transmission set of the present invention.

Third figure: is a top view of the present invention.

The fourth figure is a schematic diagram of the grasping knife of the present invention.

Fig. 5 is a schematic view of the retraction of the present invention.

Figure 6 is a schematic view showing the action of grasping a knife according to another embodiment of the present invention.

Figure 7 is a schematic view showing the retracting action of another embodiment of the present invention

Figure 8 is a schematic view of a knife holder according to another embodiment of the present invention.

(22)‧‧‧Magnetic Swing Arm

(30)‧‧‧Disk magazine

(50)‧‧‧Servo motor drive set

(51)‧‧‧Servo motor

(52)‧‧‧Motor gear

(53)‧‧‧Camshaft

(531)‧‧‧Without intermittent servo cam

(532)‧‧‧Slide rails

(55)‧‧‧Division

(54)‧‧‧ Transmission bearings

(56) ‧‧‧Transmission gear

(57)‧‧‧ Fixed seat

Claims (4)

The utility model relates to a servo motor transmission cam changing mechanism, which comprises: a machine tool body and a servo motor transmission group; the tool body bracket is arranged on both sides of the upper part of the machine body, the spindle is arranged on the middle side, and the front end of the tool holder bracket on both sides The utility model is provided with a tool magazine swing arm, and a torsion spring fixing groove is arranged on the inner side of the tool magazine swing arm to pivot a strong pre-compression torsion spring, and a disc type tool magazine is arranged at the bottom end of the tool magazine swing arm, and a plurality of knife cutters are arranged on the periphery of the disc type tool magazine. The servo motor transmission set includes: a servo motor, a motor gear, a camshaft, a plurality of transmission bearings and an indexing disk, the servo motor is locked on the side of the disk magazine, The front end of the servo motor is provided with a motor gear. The side of the motor gear is provided with a cam shaft. The front side of the cam shaft is provided with a transmission gear and a motor gear. The middle part of the cam shaft is provided with a non-intermittent servo-specific cam, and the non-intermittent servo-specific cam forms a slip. The rail and the rear side of the camshaft are provided with a fixing seat. The side of the camshaft is provided with an indexing disc. The outer edge of the indexing disc is circumferentially locked with a plurality of transmission bearings, so that the servo motor transmission group driving sub-set can be set by the program control. Rapidly rotating disk, thereby completing the tool selection and tool change operation quickly and dramatically reduce machining process, reducing production costs. The servo motor transmission cam changing mechanism according to the first aspect of the patent application, wherein the servo motor transmission group is disposed at a side of the disc magazine. The servo motor transmission cam changing mechanism according to the first aspect of the patent application scope, wherein among the plurality of transmission bearings, one of the transmission bearings is accommodated between the non-intermittent servo-specific cam slide rails, and the other transmission bearing is Screw the side of the cam without the intermittent servo into the slide rails in sequence. According to the servo motor transmission cam changing mechanism according to the first aspect of the patent application scope, the plurality of transmission bearings can be rotated according to the sliding rail, thereby driving the indexing disc locked by the transmission bearing to complete the rapid tool selection and tool change.