TWM638761U - Tapping machine spindle tool stroke protection device - Google Patents

Abstract

A tool stroke protection device for the main shaft of a tapping machine, which includes a base, a protection component, a pushing device, and a controller. The protection component is connected to the base so that it can move up and down relative to the base. The protection component It includes a fixed seat, a driving block, a spring member arranged between the fixed seat and the driving block, a linkage block pivotally connected with the fixing seat, a driving rod connecting the driving block and the linkage block, An element under test of the linkage block and a sensor sensing the element under test, when the pushing device pushes against the driving block, and the resistance received by the fixed seat becomes larger, the linkage block relative to the fixed The seat pivots, and the sensor senses the change of the magnetic field generated by the element under test and sends an induction signal to the controller to stop the action of the pushing device.

Description

Tool stroke protection device for tapping machine spindle

The present invention relates to a tapping machine, in particular to a tool protection device for the main shaft of the tapping machine.

The tapping machine is mainly a mechanical processing equipment used to process threads on the inner peripheral wall of the through hole or blind hole of the workpiece.

The existing automatic tapping machine mainly utilizes a propelling device to drive the main shaft seat of the tapping machine to move down, so that the cutter installed on the main shaft seat of the tapping machine is close to the workpiece. The user usually sets a pushing stroke, so that the pushing device drives the main shaft seat of the tapping machine to move down to a preset position.

However, if the pushing device drives the spindle base of the tapping machine to move down, and the tool contacts the workpiece and is resisted, the pushing device will still continue to drive the spindle base of the tapping machine to move down to the preset position, and the tool will It is difficult to reach into the workpiece due to obstruction, and it is easy to be broken.

In view of the above-mentioned deficiency, the main purpose of this new model is to provide a tool travel protection device for the main shaft of the tapping machine. When the main shaft seat of the tapping machine is subjected to a large resistance, the pushing device can be stopped, and the tool connected to the main shaft can be prevented from being damaged. break off.

In order to achieve the above purpose, the new tapping machine spindle tool stroke protection device includes: a base; A protective component, which is used to connect with a main shaft seat, and is connected to the machine base for moving up and down relative to the machine base, the protective component includes a fixed seat, the fixed seat is connected with the main shaft seat; A driving block, the driving block is located above the fixing seat and forms a distance from the fixing seat; a spring member, the spring member is supported between the fixing seat and the driving block; a linkage block, the linkage block is pivoted on the fixed base and can pivot relative to the fixed base; a driving rod, the two ends of the driving rod are respectively connected to the driving block and the linkage block; a device under test, the device under test is connected with the linkage block; and A sensor, which is located on one side of the tested element, is used to sense the change of the magnetic field generated by the tested element and generate an induction signal; a pushing device, the pushing device has a push rod for pushing against the downward movement of the driving block; and A controller, the controller is electrically connected with the sensor and the pushing device, the controller is used for receiving the induction signal sent by the sensor, and controlling the pushing device.

Utilizing the above-mentioned technical features, when the pushing device pushes the protective assembly to drive the main shaft seat to move down, if the resistance received by the main shaft seat becomes larger, the distance between the driving block and the fixed seat will become smaller, thereby making the The driving rod drives the linkage block to pivot relative to the fixed seat, so that the sensor senses the change of the magnetic field of the device under test, and transmits the induction signal to the controller, and the controller receives the induction signal , sending a control signal to the pushing device to stop the pushing device from moving. Therefore, when the main shaft seat is subjected to greater resistance, the pushing device will stop moving to prevent the cutter connected to the tapping machine main shaft from being broken.

Please refer to FIGS. 1 to 5 , the preferred embodiment of the tool stroke protection device for the spindle of the tapping machine of the present invention includes a machine base 10 , a protection component 30 , a pushing device 40 , and a controller.

The protective assembly 30 is used to connect with a main shaft base 20, and is connected to the base 10 to move up and down relative to the base 10, and the main shaft base 20 is connected to the base to move up and down relative to the base 10. 10. A slide rail device may be provided between the machine base 10 and the main shaft base 20, and the machine base 10 may be provided with an elongated slot 12 extending up and down. 10, the protective assembly 30 and the main shaft seat 20 are connected by a connecting block 25 passing through the elongated slot 12. When the protective assembly 30 is pushed and moves downward relative to the machine base 10, it will Simultaneously, the main shaft base 20 is driven to move downward relative to the base 10 .

The protection component 30 includes a fixed base 31 , a driving block 32 , a spring element 34 , a connecting block 35 , a driving rod 36 , a tested component 37 , and a sensor 38 .

The fixing seat 31 is connected with the main shaft seat 20, the driving block 32 is located above the fixing seat 31, and forms a distance from the fixing seat 31, and the spring member 34 is arranged between the driving block 32 and the fixing seat 31, And supported between the driving block 32 and the fixing seat 31, a connecting rod 33 may be provided between the fixing seat 31 and the driving block 32, the connecting rod 33 is fixed on the driving block 32, and extends into the fixing seat 31 , a C-shaped fastener is provided between the connecting rod 33 and the fixing seat 31 to prevent the connecting rod 33 from detaching from the fixing seat 31 upwards.

The linkage block 35 is pivotally arranged on the fixed seat 31, and can pivot relative to the fixed seat 31. The opposite ends of the drive rod 36 are respectively connected to the drive block 32 and the linkage block 35. Therefore, when the drive block When the distance between 32 and the fixed seat 31 is shortened, the driving rod 36 moves toward the fixed seat 31 and drives the linkage block 35 to pivot relative to the fixed seat 31 . The tested component 37 is connected with the link block 35 and is located at the pivot joint between the linked block 35 and the fixed seat 31. A distance is formed between them, and it is used to sense the change of the magnetic field generated by the tested element 37 and generate an induction signal. The tested element 37 may be a magnet, and the sensor 38 may be a magnetic sensor.

The pushing device 40 is installed on the machine base 10, and has a push rod 42 for pushing the driving block 32 to move downward. The pushing device 40 can be a cylinder device, located above the protective assembly 30, and It has a relatively retractable push rod 42 ; the controller is electrically connected with the sensor 38 and the pushing device 40 , and the controller is used to receive the induction signal from the sensor 38 and control the pushing device 40 .

Please refer to Fig. 4 to Fig. 7, when in use, the pushing device 40 is controlled so that the push rod 42 protrudes from the pushing device 40, and pushes against the driving block 32 of the protective component 30, thereby pushing the protective component 30 and The main shaft seat 20 moves downward; when the main shaft seat 20 and the fixed seat 31 are not subjected to resistance, when the push rod 42 pushes the driving block 32, the spring member 34 is supported on the fixed seat 31 and the driving block 32 In between, when the fixed base 31 moves with the driving block 32 due to the thrust of the spring member 34 , a distance will still be maintained between the fixing base 31 and the driving block 32 .

Please refer to Fig. 6 and Fig. 7, when the main shaft seat 20 is subjected to resistance when moving down, for example, when the resistance becomes larger during tapping, the main shaft seat 20 is affected by the resistance and slows down the speed of movement, so that the fixed The speed at which the seat 31 moves down slows down. Since the push rod 42 continues to push the driving block 32 to move towards the fixed seat 31, the spring member 34 will be compressed, so that the distance between the driving block 32 and the fixed seat 31 shorten, and then drive the driving rod 36 to move down relatively, so that the interlocking block 35 is driven by the driving rod 36 and pivots relative to the fixed seat 31. At this time, the interlocking block 35 pivots relative to the fixed seat 31 When the magnetic field of the tested element 37 changes, when the sensor 38 detects the changed magnetic field of the tested element 37, it transmits an induction signal to the controller, and after the controller receives the induction signal, A control signal will be issued to control the action of the pushing device 40, so that the push rod 42 stops extending, and the pushing rod 42 is controlled to retract relatively into the pushing device 40. Therefore, when the main shaft seat 20 is subject to a large When there is resistance, the pushing device 40 will stop pushing the protection assembly 30, so as to avoid the problem that the knife is broken when it is still pressed down continuously when the knife is blocked.

10: base 12: Long groove 20: Spindle seat 25: link block 30: Protective components 31: fixed seat 32: drive block 33: connecting rod 34: spring piece 35: Link block 36: drive rod 37: Component under test 38: Sensor 40: Push device 42: putter

Fig. 1 is a front view of a preferred embodiment of the present invention. Fig. 2 is a side view of a preferred embodiment of the present invention. Fig. 3 is a partially enlarged three-dimensional appearance view of a preferred embodiment of the present invention. Fig. 4 is a partially enlarged front view of a preferred embodiment of the present invention. Fig. 5 is a partially enlarged sectional side view of a preferred embodiment of the present invention. Fig. 6 is a schematic side view of the action of the preferred embodiment of the present invention. Fig. 7 is a schematic front view of the action of the preferred embodiment of the present invention

10: base

12: Long groove

20: Spindle seat

30: Protective components

31: fixed seat

32: drive block

40: Push device

42: putter

Claims (5)

A tool stroke protection device for a tapping machine spindle, which includes: a base; A protective component, which is used to connect with a main shaft seat, and is connected to the machine base for moving up and down relative to the machine base, the protective component includes a fixed seat, the fixed seat is connected with the main shaft seat; A driving block, the driving block is located above the fixing seat and forms a distance from the fixing seat; a spring member, the spring member is supported between the fixing seat and the driving block; a linkage block, the linkage block is pivoted on the fixed base and can pivot relative to the fixed base; a driving rod, the two ends of the driving rod are respectively connected to the driving block and the linkage block; a device under test, the device under test is connected with the linkage block; and A sensor, which is located on one side of the tested element, is used to sense the change of the magnetic field generated by the tested element and generate an induction signal; a pushing device, the pushing device has a push rod for pushing against the downward movement of the driving block; and A controller, the controller is electrically connected with the sensor and the pushing device, the controller is used for receiving the induction signal sent by the sensor, and controlling the pushing device. The tool travel protection device for tapping machine spindle as described in claim 1, wherein a connecting rod is provided between the fixing seat and the driving block, and the connecting rod is fixed to the driving block and extends into the fixing seat. According to claim 2, the tool stroke protection device for the spindle of the tapping machine, wherein the pushing device is a cylinder device and is located above the protection component. The tool stroke protection device for tapping machine spindle as claimed in any one of claims 1 to 3, wherein the tested element is a magnet, and the sensor is a magnetic sensor. According to claim 4, the tool stroke protection device for the main shaft of the tapping machine, wherein the tested element is arranged at the pivot joint between the linkage block and the fixed base.

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