TWI761118B - Micro-diameter drill detection system - Google Patents

Abstract

A micro-diameter drill detection system, suitable for workpiece setting, includes a base, a plurality of support columns inserted into the base, and a detection system with a plurality of load sensors respectively arranged on the support columns unit, a stack of stages resting on the load sensors, a plurality of magnetic levitation units that cooperate to drive the magnetic levitation of the support columns to be inserted into the base, and a plurality of matching elastic clips to abut and position the support columns. A vertical adjustment unit, and a control unit. Through the design of arranging the load sensors between the support columns and the carrier, the load signal changes measured by the load sensors during the machining of the small-diameter holes in the workpiece can be analyzed. Whether it meets a tool change condition, to judge whether the wear degree of the micro-diameter drill has reached the standard for replacement.

Description

Micro-diameter drill detection system

The present invention relates to a detection system, in particular to a drill bit wear detection system for drilling processing.

In the manufacturing industry, when drilling workpieces, especially when drilling micro-diameter holes, a lot of man-hours and costs must be lost because the service life of micro-diameter drill bits cannot be predicted. When the general drilling equipment detects the life of the drill bit, the output current of the control unit is mostly used as the basis for monitoring the wear condition of the drill bit during processing. When the cutting ability of the drill bit decreases, the frictional resistance between the drill bit and the workpiece will increase, and then The processing torque becomes larger, at this time, it can be judged by the change of the output current of the control unit.

However, for micro-diameter machining, due to the relatively small current consumption during machining, the current change during micro-diameter hole and groove machining is difficult to detect. Therefore, the operator usually judges based on experience to replace the drill bit in advance, or wait until the drill bit breaks. Replacement in the workpiece. Therefore, at present, there is no better method for judging the replacement time of the drill bit in the processing of micro-diameter holes.

Accordingly, it is an object of the present invention to provide a micro-diameter drill detection system that improves at least one of the disadvantages of the prior art.

Therefore, the micro-diameter drill detection system of the present invention is suitable for setting a workpiece to be drilled with a micro-diameter slot hole. The micro-diameter drill bit detection system includes a base, a plurality of support columns inserted in the base, a detection unit, a carrier, a plurality of maglev units, a plurality of vertical adjustment units and a control unit.

The base has a top surface and is provided with a plurality of installation slot groups, each installation slot group has a slot extending downward from the top surface, and a plurality of first installation slots extending radially outward from the slot groove. The support columns are respectively downwardly inserted into the slots so as to be capable of vertical displacement and radial displacement. The detection unit includes a plurality of load sensors respectively disposed on the top of the support columns, each load sensor can sense the load to generate a load signal. The stage is stacked down against the load cells.

The maglev units are installed on the base and the support columns, each maglev unit includes a first magnetic member disposed on the base, and a second magnetic member disposed on the corresponding support column, the first magnetic member The magnetic element cooperates with the second magnetic element to drive the support column to magnetically float in the corresponding slot. The vertical adjustment units are respectively disposed in the first installation slots and radially protrude into the slots, and the vertical adjustment units corresponding to the same slot cooperate with radial elastic clips to locate the corresponding support column. The control unit signal is connected to the load sensors, and it will be analyzed and judged that one of the load signals corresponds to a tool change A reminder message is generated when the condition occurs.

The effect of the present invention is that: through the design of disposing the load sensors between the support columns and the carrier, the measurement results of the load sensors during the machining of the micro-diameter holes in the workpiece can be analyzed. The method of changing these load signals is used to judge whether the wear degree of the micro-diameter drill bit has reached the standard for replacement.

200: Micro-diameter drill detection system

3: Base

31: Top surface

310: Groove

32: Underside

33: Outer peripheral surface

34: Installation slot group

341: slot

342: accommodating slot

343: The first installation slot

344: Second installation slot

4: Carrier

40: Alignment slot

5: Support column

51: Locating ring groove

6: Detection unit

61: Load sensor

62: The first rangefinder

63: Gyroscope

64: Accelerometer

65: Second rangefinder

7: Maglev unit

71: The first magnetic piece

72: Second magnetic piece

73:Transfer kit

731: Vertical screw

732: Turn the screw

8: Vertical adjustment unit

81: Elastic

82: Positioning pieces

83: Transfer parts

9: Control unit

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, wherein: Figure 1 is a perspective view of an embodiment of the micro-diameter drill detection system of the present invention; Figure 2 is one of the embodiments Functional block diagram; Fig. 3 is an exploded perspective view of this embodiment; Fig. 4 is an incomplete perspective exploded view of this embodiment; Fig. 5 is an incomplete side sectional view of this embodiment; A fragmentary top side view of an embodiment; and FIG. 7 is a fragmentary top cross-sectional view of one of the embodiments.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are designated by the same reference numerals.

Referring to FIGS. 1, 2, and 3, an embodiment of the detection system 200 for micro-diameter drill bits of the present invention is suitable for carrying a workpiece (not shown) to be processed for micro-diameter holes and grooves, and includes a base 3, a plurality of A support column 5 erected on the base 3, a carrier 4 stacked on the support columns 5 and used to carry the workpiece, a support column 5 installed on the base 3 and the support columns 5. A detection unit 6, a plurality of magnetic levitation units 7 arranged on the base 3 and the support columns 5, a plurality of vertical adjustment units 8 arranged on the base 3 and used for positioning the support columns 5, and a signal The control unit 9 of the detection unit 6 is connected.

In this embodiment, the base 3 is in the shape of a rectangle, and has a top surface 31 , a bottom surface 32 , and an annular outer peripheral surface 33 extending downward from the periphery of the top surface 31 to the bottom surface 32 , and There is a groove 310 recessed on the top surface 31 , and a plurality of mounting groove groups 34 provided on the top surface 31 and the outer peripheral surface 33 .

3, 4, and 5, each mounting slot group 34 has a slot 341 extending downward from the top surface 31, and an accommodating slot 342 extending upward from the bottom surface 32 and coaxial with the slot 341, and eight first installation grooves 343 and four second installation grooves 344 extending radially outward from the slot 341 . In the present embodiment, the slots 341 of the installation slot groups 34 are distributed on the four corners of the top surface 31 , but the implementation is not limited to this.

The first installation grooves 343 are divided into two groups of four at intervals, and the first installation grooves 343 of each group are distributed at equal angular intervals around the grooves 341 , and two are horizontally coaxially symmetrical. The coaxially symmetrical first mounting grooves 343 are Extend along a first axis X, and one of them is extended and exposed on the outer peripheral surface 33; the other two coaxially symmetrical first installation grooves 343 are along a second axis Y orthogonal to the first axis X extension, and one of the extensions is exposed on the outer peripheral surface 33 .

The second installation grooves 344 are divided into upper and lower groups in two groups, one of which is located above the first installation grooves 343, and the other group is located below the first installation grooves 343, and each group The second installation grooves 344 are perpendicular to each other and extend radially outward from the groove 341 to the outer peripheral surface 33

The support columns 5 are respectively partially inserted into the slots 341 downwards, each support column 5 can be displaced up and down in the corresponding slot 341 axially and radially horizontally, and each support column 5 The outer peripheral surface 33 is recessed with two annular positioning ring grooves 51 which are spaced up and down and located in the slot 341 . The bottom surface of the carrier 4 is concavely provided with four alignment grooves 40 respectively for the supporting columns 5 to be inserted and positioned upward.

Referring to FIGS. 4 , 5 and 6 , the detection unit 6 includes a plurality of load sensors 61 respectively disposed on the top surfaces of the support columns 5 , and a plurality of first sensors 61 respectively disposed in the second installation grooves 344 . A distance device 62 , a gyroscope 63 and an accelerometer 64 arranged on the bottom surface of the carrier 4 and located in the groove 310 , and a plurality of second distance meters 65 respectively embedded in the base 3 .

The load sensors 61 are abutted between the support columns 5 and the carrier 4 , and each load sensor 61 senses the change of the load carried and generates a corresponding load signal. The first rangefinders 62 and the second rangefinders 65 are both optical rangefinders. Each of the first rangefinders 62 emits detection light radially toward the corresponding slot 341 , and senses the detection light reflected by the outer peripheral surface of the support column 5 in the slot 341 to generate a corresponding first detection light. distance signal. The second rangefinders 65 are respectively exposed at the bottom of the slots 341 , and each second rangefinder 65 can emit detection light toward the slot 341 and sense the corresponding bottom of the support column 5 . The detection light reflected by the end surface generates a second ranging signal correspondingly. The gyroscope 63 is a three-axis gyroscope, which can sense the rotation of the carrier 4 to generate a corresponding rotation signal. The accelerometer 64 is a three-axis accelerometer, which can sense the horizontal displacement and vertical vibration of the carrier 4 to generate a corresponding rotation signal. Generate a displacement vibration signal. Since the load sensors 61 , the first rangefinders 62 , the gyroscope 63 , the accelerometer 64 , and the second rangefinders 65 are all existing components and have many types, they will not be described in detail. .

Since the magnetic levitation units 7 and the vertical adjustment units 8 are symmetrically disposed in the installation slot groups 34 and the support columns 5 , only the magnetic levitation unit 7 and the vertical adjustment units corresponding to one of the installation slot groups 34 are shown in the figure. The adjustment unit 8 will be described.

Each maglev unit 7 includes a first magnetic member 71 disposed in the respective accommodating slot 342 , a magnetic member 71 disposed in the bottom end of the support column 5 in the slot 341 corresponding to the accommodating slot 342 . The second magnetic element 72 and a transfer set 73 mounted on the base 3 and connected with the first magnetic element 71 . The first magnetic member 71 and the second magnetic member 72 are in the shape of magnetic poles repelling up and down, and cooperate to drive the support column 5 to magnetically float in the slot 341 . The transfer sleeve 73 includes an upright screw 731 that can be screwed up and down in the accommodating groove 342 and connected upward to the first magnetic member 71 , and a water The flat screw is arranged on the base 3 and is connected with the upright screw 731 to rotate the screw 732 . The rotation screw 732 can be turned to drive the upright screw 731 to rotate relative to the base 3 , and then move up and down in the accommodating groove 342 Displacement, so that the upright screw 731 drives the first magnetic member 71 to move up and down in the accommodating groove 342 for positioning.

4 , 5 , and 7 , the vertical adjustment units 8 are respectively disposed in the first installation grooves 343 , wherein the vertical adjustment units 8 disposed in each of the first installation grooves 343 not exposed on the outer peripheral surface 33 The adjustment unit 8 includes an elastic piece 81 and a positioning piece 82 . The elastic piece 81 elastically pushes against the base 3 and the positioning piece 82 and drives the positioning piece 82 to partially protrude into the corresponding slot 341 and embedded in one of the positioning ring grooves 51 of the corresponding support column 5 , and resiliently abuts against the support column 5 . The vertical adjustment unit 8 disposed in each of the first installation grooves 343 exposed on the outer peripheral surface 33 includes an elastic member 81 , a positioning member 82 , and a shifting member 83 , and the elastic member 81 is elastically pressed against the Between the positioning member 82 and the shifting member 83 , the positioning member 82 is driven to protrude into the corresponding slot 341 and fit into one of the positioning ring grooves 51 of the corresponding support column 5 , and elastically press against the corresponding slot 341 . The support column 5 and the shifting member 83 are screwed in the first installation groove 343 and can be manipulated to screw and displace along the length of the first installation groove 343 , and the positioning member can be adjusted through the elastic member 81 82 protrudes into the slot 341.

The vertical adjustment units 8 corresponding to the same slot 341 are inserted into the positioning ring grooves 51 of the corresponding support column 5 with the positioning members 82 , and are radially clamped against the support column 5 . different height positions. In addition, these shifts can be shifted by screw shifting By adjusting the elastic force of the corresponding elastic piece 81 by elastic compression and accumulating, and then changing the elastic force applied by the elastic piece 81 to the corresponding support column 5, it can be used to adjust the support column 5 to the corresponding insertion The position in the slot 341 can be adjusted so that the support column 5 is inserted into the slot 341 vertically.

2 , 3 and 5 , the control unit 9 is signal-connected to the load sensors 61 , the first rangefinders 62 , the gyroscope 63 , the accelerometer 64 and the second rangefinders 65 . During implementation, the control unit 9 can be a microprocessor circuit embedded in the base 3, or an electronic device or computer arranged outside the base 3. Due to the numerous types, the above-mentioned control is not used during implementation. The form is limited.

The control unit 9 analyzes each load signal to obtain a load data, analyzes each first ranging signal to obtain a first ranging data, and analyzes each second ranging signal to obtain a second ranging data, and analyze the rotation signal and the displacement vibration signal to obtain a rotation data and a displacement vibration data respectively.

The control unit 9 will analyze the first distance measurement data to determine whether the support pillars 5 are vertically inserted into the slots 341, and will generate a corresponding indicator when it is determined that one of the support pillars 5 is not vertical. A reminder message that one of the support columns 5 is skewed.

In addition, the control unit 9 has a built-in tool change condition, and will analyze the load data, the first distance measurement data, the second distance measurement data, the rotation data and/or the displacement vibration data in accordance with the When the tool is changed, a reminder message will be generated to remind you to replace the micro-diameter drill. Each of the reminder messages can be a warning sound, a light signal, an image and / or voice.

When the micro-diameter drill detection system 200 of the present invention is used, the workpiece to be processed can be positioned and positioned on the top surface of the carrier 4 , and the workpiece can be drilled with micro-diameter holes and grooves by a processing machine equipped with a micro-diameter drill.

After the workpiece is installed and positioned on the carrier 4, the upright screws 731 can be driven to drive the first magnetic members 71 to move up and down respectively by rotating the rotating screws 732, thereby changing the supporting columns 5. The length of inserting the maglev into the slots 341, and by analyzing the rotation data represented by the rotation signal of the gyroscope 63, adjust the stage 4 carrying the workpiece to a horizontal state or a desired processing angle .

In addition, the adjusting members 83 of the vertical adjusting units 8 can be further adjusted, and the supporting columns 5 can be adjusted to be vertical to the respective supporting columns 5 according to the method of analyzing the sensing results of the first rangefinders 62 . Status of slot 341.

During the machining of micro-diameter holes, the control unit 9 will continue to receive and analyze the load signals, the first ranging signals, the second ranging signals, the rotation signal and the displacement vibration signal. When the micro-diameter drill bit is worn to the point that it cannot cut and drill the hole smoothly, the load applied by the processing tool to the workpiece through the micro-diameter drill bit will increase, and the frictional resistance between the micro-diameter drill bit and the workpiece will also increase, which will cause the The workpiece drives the stage 4 to generate horizontal displacement, vibration and/or rotation, and synchronously drives the support columns 5 to float up and down and horizontally offset in the slots 341 . The control unit 9 will determine the load data, the first ranging data, the second ranging data When the material, the rotation data and/or the displacement vibration data meet the tool changing condition, a reminder message for reminding to replace the micro-diameter drill bit is generated.

In this embodiment, the stage is detected through the load sensors 61 , the first rangefinders 62 , the gyroscope 63 , the accelerometer 64 and the second rangefinders 65 respectively. 4 and these support columns 5 in the process of the workpiece processing, the displacement, vibration and rotation of the state of change, and comprehensively judge the sensing results to determine whether the micro-diameter drill has reached the state that needs to be replaced, but when implementing , in another embodiment of the present invention, it is not necessary to set the first range finder 62 , the gyroscope 63 , the accelerometer 64 and the second range finder 65 . In the case of waiting for the sensing result of the load sensor 61, it can be determined whether the micro-diameter drill bit has been worn to a state that needs to be replaced.

In summary, through the structural design of the base 3 , the support columns 5 and the stage 4 , and the design of the load sensors 61 disposed between the support columns 5 and the stage 4 , it is possible to By analyzing the changes of the load signals measured by the load sensors 61 during the machining of the micro-diameter holes in the workpiece, it is determined whether the wear level of the micro-diameter drill bit has reached the standard for replacement. The sensing results of the first rangefinders 62 , the gyroscopes 63 , the accelerometers 64 and the second rangefinders 65 installed on the base 3 and the carrier 4 can be further analyzed to improve the The accuracy of judging whether the micro-diameter drill bit needs to be replaced. Therefore, the micro-diameter drill detection system 200 of the present invention can indeed improve the problem of judging the replacement of the drill bit in the current micro-diameter hole processing, which is a rather innovative design. The object of the present invention can be achieved.

However, the above are only examples of the present invention, and should not limit the scope of implementation of the present invention. Any simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the contents of the patent specification are still included in the scope of the present invention. within the scope of the invention patent.

200: Micro-diameter drill detection system

3: Base

31: Top surface

32: Underside

33: Outer peripheral surface

34: Installation slot group

341: slot

342: accommodating slot

343: The first installation slot

344: Second installation slot

4: Carrier

40: Alignment slot

5: Support column

51: Locating ring groove

6: Detection unit

61: Load sensor

62: The first rangefinder

7: Maglev unit

71: The first magnetic piece

72: Second magnetic piece

73:Transfer kit

731: Vertical screw

732: Turn the screw

8: Vertical adjustment unit

81: Elastic

82: Positioning pieces

83: Transfer parts

Claims (11)

A micro-diameter drill detection system is suitable for setting a workpiece to be drilled with a micro-diameter slotted hole, and comprises: a base with a top surface and a plurality of installation groove groups, each installation groove group having A slot extending downward from the top surface, and a plurality of first installation grooves extending radially outward from the slot; a plurality of support posts, which can be vertically displaced and radially displaced, respectively, are inserted downward in the in the slot; a detection unit, including a plurality of load sensors respectively arranged at the top of the support columns, each load sensor can sense the load to generate a load signal; a carrier, which is stacked down On the load sensors; a plurality of maglev units installed on the base and the support columns, each maglev unit includes a first magnetic member disposed on the base, and a magnetic member disposed on the corresponding support a second magnetic piece of the column, the first magnetic piece cooperates with the second magnetic piece to drive the support column to magnetically levitate in the corresponding slot; a plurality of vertical adjustment units are respectively arranged in the first installation slots, and protrude radially into the slots, the vertical adjustment units corresponding to the same slot cooperate with the elastic clips to abut the corresponding support posts; and a control unit, the signal is connected to the load sensors, and will be in the When analyzing and judging that one of the load signals meets a tool change condition, a reminder message is generated. The micro-diameter drill detection system of claim 1, wherein each vertical The adjustment unit has an elastic piece and a positioning piece arranged in the corresponding first installation slot, and the positioning piece is elastically pushed by the elastic piece to partially protrude into the corresponding slot, and elastically push against the corresponding slot. Corresponding to the outer peripheral surface of the support column. The detection system for micro-diameter drill bits as claimed in claim 2, wherein the base has an outer peripheral surface extending up and down, and the two first installation grooves of each installation groove group are respectively directed toward different first axial directions and second installation grooves. Two axial extensions are exposed on the outer peripheral surface, the vertical adjustment unit installed in each of the first installation grooves exposed on the outer peripheral surface further includes a shifting member screwed in the first installation groove, and the shifting The member can be screwed to be screwed and displaced along the length of the first installation groove, and the elastic member is elastically supported between the shifting member and the positioning member. The micro-diameter drill bit detection system according to claim 3, wherein each support column has at least one positioning ring groove recessed around the outer peripheral surface thereof, and the positioning member of each vertical adjustment unit is embedded in the corresponding in the at least one positioning ring groove of the support column. The micro-diameter drill bit detection system as claimed in claim 4, wherein each support column has two positioning ring grooves spaced up and down, and the first installation grooves of each installation groove group are a plurality of groups divided into upper and lower parts spaced and corresponding to the two groups of the equal positioning ring grooves respectively, the first installation grooves in the group are symmetrically distributed around the corresponding slot, and two of the first installation grooves in the group are in different directions. The first axial and second axial extensions are exposed on the outer peripheral surface. The micro-diameter drill bit detection system according to claim 2, 3 or 4, wherein each installation slot group further comprises a plurality of spaced apart around the slot and from the slot a second installation groove extending radially outward, the detection unit further includes a plurality of first rangefinders respectively installed in the second installation grooves and connected to the control unit by signals, each of the first rangefinders can sense Measure the distance of the support column located in the corresponding slot to generate a first ranging signal correspondingly, the control unit can analyze the distance represented by all the first ranging signals corresponding to each slot to determine the corresponding support Whether the column is vertical or not, and a corresponding reminder message will be generated. The micro-diameter drill bit detection system according to claim 1, wherein the base has a plurality of accommodating grooves respectively for the first magnetic members to be displaceable up and down, and each magnetic levitation unit further comprises a base mounted on the base. The transfer set is seated and connected with the respective first magnetic pieces, and the transfer set can be operated to drive the first magnetic piece to move up and down in the accommodating slot. The micro-diameter drill bit detection system as claimed in claim 7, wherein each shifting set includes an upright screw that can be screwed up and down in the accommodating groove and connected to the first magnetic member at its top end. The screw rod, and a turning screw rod which is penetrated in the base and connected with the upright screw rod, the turning screw rod can be operated to drive the upright screw rod to rotate up and down in the accommodating groove, and drive the first magnetic member to rotate relative to each other. The base is displaced up and down. The micro-diameter drill bit detection system as claimed in claim 6, wherein the detection unit further comprises a gyroscope installed on the carrier and signally connected to the control unit, the gyroscope can sense the rotation of the carrier to generate Correspondingly, a rotation signal is generated, and the control unit generates the reminder message when it is analyzed and judged that one of the load signals and/or the rotation signal meets the tool change condition. The micro-diameter drill bit detection system as claimed in claim 9, wherein the detection unit The element also includes an accelerometer mounted on the carrier and connected to the control unit by signal. The accelerometer can sense the displacement and vibration of the carrier and generate a corresponding displacement vibration signal. The control unit will analyze and determine one of the loads. The reminder message is generated when the signal, the rotation signal and/or the displacement vibration signal meet the tool change condition. The detection system for micro-diameter drill bits as claimed in claim 9, wherein the detection unit further comprises a plurality of second rangefinders mounted on the base and exposed at the bottom of the slots respectively, each second rangefinder The distance device can upwardly sense the distance of the bottom end of the support column located in the corresponding slot, and correspondingly generate a second distance measuring signal, and the control unit will analyze and determine one of the load signal, the rotation signal and/or The reminder message is generated when the second ranging signals meet the tool change condition.

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